radio communication method and mobile station apparatus

专利摘要:
WIRELESS COMMUNICATION SYSTEM, APPARATUS AND METHOD. The present invention relates to an efficient power safety margin transmission control can be performed according to a frequency band to which carrier components to be subjected to frequency band aggregation belong, or with configurations of an antenna and a power amplifier of a mobile station apparatus. The mobile station apparatus includes: a 2015 power safety margin control unit that manages a power safety margin that is a difference between a maximum transmit power value determined for each uplink carrier component by the apparatus. of base station and an estimated predetermined power value for uplink transmission; and a path loss measuring unit 209 which monitors a path loss of a downlink carrier component reported by the base station apparatus among a plurality of downlink carrier components, and when a loss value of path of any downlink carrier component changes more than a predetermined value, the unit (...).
公开号:BR112012010145B1
申请号:R112012010145-5
申请日:2010-09-21
公开日:2021-05-11
发明作者:Shoichi Suzuki；Shohei Yamada
申请人:Sharp Kabushiki Kaisha；
IPC主号:

专利说明:

Technical Field
[0001] The present invention relates to a technology in which a mobile station apparatus transmits to a base station apparatus a remaining power value (power safety margin) which is a difference between maximum transmit power and predetermined power estimated for uplink transmission. Previous Technique
[0002] On an evolving wireless network uplink (hereinafter referred to as "LTE (Long Term Evolution)" or "EUTRA (Evolved Universal Terrestrial Radio Access)"), TPC (Transmission Power Control) is performed for the purpose of suppressing power consumption of a mobile station apparatus, or reducing interference with other cells. Shown is a formula used to decide a transmit power value of a PUSCH (Uplink Shared Physical Channel) used for uplink data communication specified in Chapter 5 in Non-Patent Document 1.
[0003] Formula 1:

[0004] In formula (1), PPUSCH(i) indicates a transmit power value of the PUSCH in a subframe of order i. Min{X, Y} is a function to select a minimum value from X and Y. PO_PUSCH is transmit power as the basis for the PUSCH, and is a value specified by a higher layer. MPUSCH indicates the number of PRBs (Physical Resource Blocks), which is a unit for radio resource assignment used for PUSCH transmission, etc., and indicates that the transmit power becomes greater as the number of PRBs used for PUSCH transmission increases. Furthermore, PL indicates path loss, and α is a coefficient multiplied by path loss and is specified by the highest layer. ΔTF is an offset value dependent on a modulation scheme, etc., and f is an offset value (closed loop or open loop transmit power control value) calculated by a TPC command transmitted via DCI ( Downlink Control Information). Furthermore, PCMAX is a maximum transmit power value, and it can be physical maximum transmit power or it can be specified by the highest layer. Preq is a PUSCH transmit power value calculated in order to satisfy a predetermined communication quality.
[0005] Furthermore, in order for a base station apparatus to recognize how much remaining power the mobile station apparatus has with respect to the maximum transmit power value PCMAX when transmitting the PUSCH, the mobile station apparatus informs the station apparatus base of a value obtained by subtracting an estimated predetermined power value for uplink transmission from a maximum transmit power value of a terminal, the value being called PH (Power Safety Margin). PH is defined by Formula (2) in Chapter 5 in Non-Patent Document 1.
[0006] Formula 2:

[0007] The PH is rounded to values from -23 dB to 40 dB per dB, is reported from a physical layer to the highest layer, and is transmitted to the base station apparatus. A positive PH indicates that the mobile station apparatus has transmission power remaining, and a negative PH indicates a state where the terminal is performing transmission with the maximum transmission power while transmission power exceeding the maximum transmission power value is requested. to the base station mobile station apparatus. The base station apparatus decides a bandwidth allocated to the mobile station apparatus to transmit the PUSCH, a PUSCH modulation scheme, etc. according to PH.
[0008] Shown below is a formula used to decide a transmit power value of a PUCCH (Upward Link Physical Control Channel) used for communicating uplink control information specified in Chapter 5 in Document No Patent 1.
[0009] Formula 3:

[00010] In formula (3), PPUCCH(i) indicates a PUCCH transmit power value in a subframe of order i. PO_PUCCH is a transmit power as the basis for PUCCH, and is a value specified by the highest layer. The h (nCQI, nHARQ) is a value calculated through the number of bits transmitted by the PUCCH and a format of the PUCCH, nCQI indicates CQI (Channel Quality Information) transmitted by the PUCCH, and nHARQ indicates the number of bits of HARQ ( ACK/NACK) transmitted by the PUCCH. ΔF_PUCCH is an offset value specified by the highest layer for each PUCCH format, eg it is an offset value (closed loop transmit power control value) calculated by the TPC command transmitted via DCI (Link Control Information of Descent). Preq_PUCCH is a PUCCH transmit power value calculated in order to satisfy a predetermined communication quality. It should be noted that the PH with respect to PUCCH is not transmitted in LTE.
[00011] PUCCH formats include: a PUCCH 1 format, a PUCCH 1a format, a PUCCH 1b format, a PUCCH 2 format, a PUCCH 2a format and a PUCCH 2b format, the PUCCH 1 format is the format used when transmitting a SR (Scaling Request) via on-off switching, PUCCH 1a format is the format used when transmitting 1 bit HARQ bit through BPSK, and PUCCH 1b format is the format used when transmitting 2 bit HARQ bit through QPSK.
[00012] The PUCCH 2 format is the format used when transmitting CQI (Channel Quality Information) , or used when performing join coding of CQI (Channel Quality Information) and the HARQ bit and transmitting them when the CQI and HARQ bit, PUCCH 2a format is the format used when transmitting CQI and 1 bit HARQ bit using DBPSK (Phase Switch Binary Differential Modulation) to a UL RS (Upward Link Reference Signal) multiplexed on time for PUCCH 2a format, and PUCCH 2b format is the format used when transmitting CQI and 2 bits of HARQ bit using DQPSK (Differential Quadrature Phase Switching) for CQI and time multiplexed UL RS for PUCCH format 2b.
[00013] Controlling transmission of a PH is specified in Chapter 5 of Non-Patent Document 2. The mobile station apparatus controls transmission of PH using two timers (a periodicPHR-Timer and a prohibitPHR-Timer) and a value dl-PathlossChange that have been reported by the base station apparatus. The mobile station apparatus decides to transmit the PH in a case applied to at least one of the items described below. That is, they are the following cases: a case where the prohibitPHR-Timer has expired, and additionally a path loss has changed more than the dl-PathlossChange [dB] after the PH is transmitted by the uplink radio resource (PUSCH) as initial transmission; a case where the periodicPHR-Timer has expired; and a case where a PH transmission functionality is configured or reconfigured by the higher layer, and the setting is not the setting by which PH transmission cannot be performed.
[00014] When the mobile station apparatus has decided to transmit PH at a time when the mobile station apparatus is allocated with uplink radio resource (PUSCH) used for initial transmission, and further decides to transmit PH with based on a priority of a data signal, it calculates the PH at the physical layer, and transmits the PH. Furthermore, the mobile station apparatus starts or resets the periodicPHR-Timer and the prohibitPHR-Timer.
[00015] In a wireless access system and a wireless network (hereinafter referred to as "LTE-A (Advanced Long-Term Evolution)" or "A-EUTRA (Advanced Universal Terrestrial Radio Access)") that achieve higher speed data communication using a wider band frequency band than LTE, LTE-A or A-EUTRA is required to be backward compatible with LTE, i.e. an LTE-A base station apparatus simultaneously performs communication without with both LTE-A and LTE mobile station apparatus, and the LTE-A mobile station apparatus can perform wireless communication with both LTE-A and LTE base station apparatus, and it has been examined that the same channel structure as LTE is used for LTE-A. For example, in LTE-A, a technology has been proposed (frequency band aggregation, also referred to as spectrum aggregation, carrier aggregation, frequency aggregation, etc.) in which a plurality of frequency bands (referred to below as CCs (Component Carriers) or CCs (Component Carriers)) having the same channel structure as LTE is used as a frequency band (wideband frequency band).
[00016] Specifically, in communication using frequency band aggregation, a PBCH, a PDCCH, a PDSCH, a PMCH, a PCFICH and a PHICH are transmitted for each downlink carrier component, and the PUSCH, the PUCCH and one PRACH is assigned to each uplink carrier component. That is, frequency band aggregation is a technology in which the base station apparatus and the plurality of mobile station apparatus simultaneously transmit and receive several pieces of data information and several pieces of control information on an uplink and on a downlink using the plurality of carrier components including PUCCH, PUSCH, PDCCH, PDSCH, etc. (refer to Chapter 5 in Non-Patent Document 3). List of References Non-Patent Documents
[00017] Non-Patent Document 1: "3GPP TS36.213 v.8.7.0 (2009-05)"
[00018] Non-Patent Document 2: "3GPP TS36,321 v.8.5.0 (2009-03)"
[00019] Non-Patent Document 3: "3GPP TR36.814 v.0.4.1 (2009-02)" Description of the Invention Problems to be Solved by the Invention
[00020] However, once the base station apparatus and the mobile station apparatus have performed wireless communication on a set of uplink carrier component and downlink carrier component in a conventional technology, it is not disclosed how transmission of a PH is controlled when the base station apparatus allocates the plurality of uplink carrier components and downlink carrier components to the mobile station apparatus. Furthermore, an efficient PH transmission control method differs depending on a frequency band to which carrier components to be subjected to frequency band aggregation belong, or configurations of a transmit antenna and a PA (Power Amplifier ) of the mobile station apparatus (e.g. signals from all uplink carrier components are transmitted via a transmit antenna, or signals are transmitted using a different transmit antenna for each group of uplink carrier components of climb, etc.).
[00021] Furthermore, there has been a problem that if no PRB for PUSCH transmission is designated at a time to transmit a PH when the mobile station apparatus tries to transmit the PH of a certain uplink carrier component in a different uplink carrier component, PH cannot be calculated by Formula (1).
[00022] The present invention was created in view of the problems described above, and an objective of the present invention is to provide a wireless communication system, a base station apparatus, a mobile station apparatus, a wireless communication method, a control program for the mobile station apparatus, and an integrated circuit for the base station apparatus and the mobile station apparatus in which an efficient transmission control of the PH can be performed according to a frequency band at which carrier components to be subjected to frequency band aggregation belong, or configurations of a transmit antenna and a PA of the mobile station apparatus. Means for Solving the Problems (1) In order to achieve the objective described above, the present invention has taken the following measures. That is, a wireless communication system of the present invention is the wireless communication system in which a mobile station apparatus transmits a power safety margin for each uplink component carrier to a base station apparatus, wherein the base station apparatus informs the mobile station apparatus of a plurality of uplink component carriers on which the mobile station apparatus enables power safety margin reporting, and wherein the mobile station apparatus enables margin reporting of power security on the plurality of uplink component carriers when a predetermined condition is satisfied. (2) Furthermore, in the wireless communication system of the present invention, the mobile station apparatus, having enabled transmission of the power safety margins, and when an uplink radio resource for initial transmission is designated, calculates the enabled power safety margins from the plurality of uplink component carriers, and transmits the calculated power safety margins from the plurality of uplink component carriers by the uplink radio resource designated for initial transmission. (3) Furthermore, in the wireless communication system of the present invention, the base station apparatus sets to the mobile station apparatus a plurality of component downlink carriers used for wireless communication with the mobile station apparatus, and the predetermined condition is that a path loss value for at least one of the plurality of downlink component carriers established by the base station apparatus changes more than a predetermined value. (4) Furthermore, in the wireless communication system of the present invention, the base station apparatus sets to the mobile station apparatus a plurality of component downlink carriers used for wireless communication with the mobile station apparatus and sets for the mobile station apparatus a specific downlink component carrier of the plurality of downlink component carriers used for wireless communication, and the predetermined condition is that a path loss value for a downlink component carrier. specific descent set by the base station apparatus changes more than a predetermined value. (5) Furthermore, in the wireless communication system of the present invention, the base station apparatus sets a first timer (prohibitPHR-Timer) for the mobile station apparatus, and the predetermined condition further is that the only one first timer (prohibitPHR-Timer) set by the base station apparatus has expired. (6) Furthermore, in the wireless communication system of the present invention, the base station apparatus sets a second timer (periodicPHR-Timer) for the mobile station apparatus, and the predetermined condition is that the only one second timer ( periodicPHR-Timer) set by the base station apparatus expires. (7) Furthermore, in the wireless communication system of the present invention, the mobile station apparatus causes the first timer (prohibitPHR-Timer) and the second timer (periodicPHR-Timer) to start or reset upon having transmitted the safety margins of power of the plurality of uplink component carriers. (8) Furthermore, in the wireless communication system of the present invention, the predetermined condition is that configuration or reconfiguration has been performed with respect to a power safety margin reporting functionality. (9) Furthermore, in the wireless communication system of the present invention, configuration or reconfiguration of the power safety margin reporting functionality is not used to disable the reporting functionality. (10) Furthermore, a wireless communication system of the present invention is the wireless communication system in which a mobile station apparatus transmits a power safety margin for each uplink component carrier to a station apparatus base, and the mobile station apparatus calculates a power safety margin of a first uplink component carrier using a predetermined amount of resources of a PUSCH by transmitting the power safety margin of the first uplink component carrier per a second uplink component carrier, and the base station apparatus determines that the power safety margin of the first uplink component carrier has been calculated by the mobile station apparatus using the predetermined amount of resources of the PUSCH. (11) Furthermore, in the wireless communication system of the present invention, when a resource of the PUSCH is assigned to the first uplink component carrier by the base station apparatus when the mobile station apparatus transmits the safety margin of power, the mobile station apparatus calculates the power safety margin of the first uplink component carrier using the amount of PUSCH resources allocated to the first uplink component carrier, and the base station apparatus determines that the margin The power security of the first uplink component carrier was calculated by the mobile station apparatus using the amount of PUSCH resources assigned to the first uplink component carrier. (12) Furthermore, in the wireless communication system of the present invention, the predetermined amount of PUSCH resources is an amount of PUSCH resources assigned by the base station apparatus to the second uplink component carrier that transmits the edge. of power security. (13) Furthermore, in the wireless communication system of the present invention, the predetermined resource amount of the PUSCH is a physical resource block, and the physical resource block is a unit for allocating the PUSCH to the mobile station apparatus. . (14) Furthermore, a wireless communication system of the present invention is the wireless communication system in which a mobile station apparatus transmits a power safety margin for each uplink component carrier to a station apparatus. base, the mobile station apparatus calculates the power safety margin of the uplink component carrier using a predetermined PUCCH format, and the base station apparatus determines that the power safety margin has been calculated by the mobile station apparatus using the default PUCCH format. (15) Furthermore, in the wireless communication system of the present invention, by transmitting a PUCCH on the uplink component carrier in which the power safety margin is calculated when the mobile station apparatus transmits the safety margin of power, the mobile station apparatus calculates the power safety margin of the uplink component carrier that transmits the PUCCH using the PUCCH format of the PUCCH to be transmitted, and the base station apparatus determines that the power safety margin of the Uplink component carrier which transmits the PUCCH was calculated by the mobile station apparatus using the PUCCH format of the PUCCH to be transmitted on the uplink component carrier. (16) Furthermore, a wireless communication system of the present invention is the wireless communication system in which a mobile station apparatus transmits a power safety margin for each uplink component carrier to a station apparatus base, the mobile station apparatus calculates the power safety margin of the uplink component carrier using an offset value with respect to a predetermined PUCCH format, and the base station apparatus determines that the power safety margin has been calculated. by the mobile station apparatus using the offset value with respect to the predetermined PUCCH format. (17) Furthermore, in the wireless communication system of the present invention, when transmitting the PUCCH on the uplink component carrier in which the power safety margin is calculated when the mobile station apparatus transmits the safety margin of power, the mobile station apparatus calculates the power safety margin of the uplink component carrier transmitting the PUCCH using the offset value with respect to the PUCCH format of the PUCCH to be transmitted, and the base station apparatus determines that the power safety margin of the uplink component carrier transmitting the PUCCH was calculated by the mobile station apparatus using the offset value with respect to the PUCCH format of the PUCCH to be transmitted on the uplink component carrier. (18) Furthermore, in the wireless communication system of the present invention, the offset value is specified by the base station apparatus for each PUCCH format. (19) Furthermore, in the wireless communication system of the present invention, the offset value is calculated from the number of bits of the UCI transmitted by the PUCCH. (20) Furthermore, in the wireless communication system of the present invention, the offset value with respect to the predetermined PUCCH format is the offset value with respect to a PUCCH 1a format used to transmit 1 bit of HARQ bit. (21) Furthermore, a base station apparatus of the present invention is the base station apparatus that receives a power safety margin for each uplink component carrier transmitted by a mobile station apparatus, and the station apparatus The base informs the mobile station apparatus of a plurality of uplink component carriers on which the mobile station apparatus activates power safety margin reporting. (22) Furthermore, a base station apparatus of the present invention is the base station apparatus that receives a power safety margin for each uplink component carrier transmitted by a mobile station apparatus and upon receiving a power safety margin of a first uplink component carrier by a second uplink component carrier, the base station apparatus determines that the power safety margin of the first uplink component carrier has been calculated by the mobile station using a predetermined amount of resources of a PUSCH. (23) Furthermore, a base station apparatus of the present invention is the base station apparatus that receives a power safety margin for each uplink component carrier transmitted by a mobile station apparatus, and the station apparatus base determines that the received power safety margin has been calculated by the mobile station apparatus using a predetermined PUCCH format. (24) Furthermore, a base station apparatus of the present invention is the base station apparatus that receives a power safety margin for each uplink component carrier transmitted by a mobile station apparatus, and the station apparatus base determines that the received power safety margin has been calculated by the mobile station apparatus using an offset value with respect to a predetermined PUCCH format. (25) Furthermore, a mobile station apparatus of the present invention is the mobile station apparatus which transmits a power safety margin for each uplink component carrier to a base station apparatus and when a predetermined condition is satisfied, the mobile station apparatus activates reporting of the power safety margins on the plurality of uplink component carriers. (26) Furthermore, a mobile station apparatus of the present invention is the mobile station apparatus which transmits a power safety margin for each uplink component carrier to a base station apparatus and, in transmitting a margin of power security of a first uplink component carrier by a second uplink component carrier, the mobile station apparatus calculates the power security margin of the first uplink component carrier using a predetermined amount of resources of a PUSCH. (27) Furthermore, a mobile station apparatus of the present invention is the mobile station apparatus which transmits a power safety margin for each uplink component carrier to a base station apparatus, and the mobile station apparatus calculates the power safety margin of the uplink component carrier using a predetermined PUCCH format. (28) Furthermore, a mobile station apparatus of the present invention is the mobile station apparatus which transmits a power safety margin for each uplink component carrier to a base station apparatus, and the mobile station apparatus calculates the power safety margin of the uplink component carrier using an offset value with respect to a predetermined PUCCH format. (29) Furthermore, a wireless communication method of the present invention is the wireless communication method used by a base station apparatus that receives a power safety margin for each uplink component carrier transmitted by an apparatus. of the mobile station, and the base station apparatus informs the mobile station apparatus of the plurality of uplink component carriers on which the mobile station apparatus activates reporting of the power safety margins. (30) Furthermore, a wireless communication method of the present invention is the wireless communication method used by a base station apparatus that receives a power safety margin for each uplink component carrier transmitted by an apparatus. of the mobile station and, having received a power safety margin of a first uplink component carrier by a second uplink component carrier, the base station apparatus determines that the power safety margin of the first component carrier The uplink rate was calculated by the mobile station apparatus using a predetermined amount of resources of a PUSCH. (31) Furthermore, a wireless communication method of the present invention is the wireless communication method used by a base station apparatus that receives a power safety margin for each uplink component carrier transmitted by an apparatus. of the mobile station, and the base station apparatus determines that the received power safety margin has been calculated by the mobile station apparatus using a predetermined PUCCH format. (32) Furthermore, a wireless communication method of the present invention is the wireless communication method used by a base station apparatus that receives a power safety margin for each uplink component carrier transmitted by an apparatus. of mobile station apparatus, and the base station apparatus determines that the received power safety margin has been calculated by the mobile station apparatus using an offset value with respect to a predetermined PUCCH format. (33) Furthermore, a wireless communication method of the present invention is the wireless communication method used by a mobile station apparatus which transmits a power safety margin for each uplink component carrier to a mobile station apparatus. base station and, when a predetermined condition is satisfied, the mobile station apparatus activates reporting of power safety margins on the plurality of uplink component carriers. (34) Furthermore, a wireless communication method of the present invention is the wireless communication method used by a mobile station apparatus which transmits a power safety margin for each uplink component carrier to a mobile station apparatus. base station and, by transmitting a power safety margin of a first uplink component carrier by a second uplink component carrier, the mobile station apparatus calculates the power safety margin of the first uplink component carrier. climb using a predetermined amount of resources from a PUSCH. (35) Furthermore, a wireless communication method of the present invention is the wireless communication method used by a mobile station apparatus which transmits a power safety margin for each uplink component carrier to a mobile station apparatus. base station, and the mobile station apparatus calculates the power safety margin of the uplink component carrier using a predetermined PUCCH format. (36) Furthermore, a wireless communication method of the present invention is the wireless communication method used by a mobile station apparatus which transmits a power safety margin for each uplink component carrier to a mobile station apparatus. base station, and the mobile station apparatus calculates the power safety margin of the uplink component carrier using an offset value with respect to a predetermined PUCCH format. (37) Furthermore, a control program for a mobile station apparatus of the present invention is the control program used for the mobile station apparatus which transmits a power safety margin for each uplink component carrier for a base station apparatus and, when a predetermined condition is satisfied, processing to enable reporting of power safety margins on the plurality of uplink component carriers is converted into a computer-readable, computer-executable command. (38) Furthermore, a control program for a mobile station apparatus of the present invention is the control program used for the mobile station apparatus which transmits a power safety margin for each uplink component carrier for a base station apparatus and, when the mobile station apparatus transmits a power safety margin of a first uplink component carrier by a second uplink component carrier, processing to calculate the power safety margin of the first carrier uplink component using a predetermined amount of resources of a PUSCH is converted into a computer-readable, computer-executable command. (39) Furthermore, a control program for a mobile station apparatus of the present invention is the control program used for the mobile station apparatus which transmits a power safety margin for each uplink component carrier for a base station apparatus, and processing to calculate the power safety margin of the uplink component carrier using a predetermined PUCCH format is converted into a computer-readable, computer-executable command. (40) Furthermore, a control program for a mobile station apparatus of the present invention is the control program used for the mobile station apparatus which transmits a power safety margin for each uplink component carrier for a base station apparatus, and processing to calculate the power safety margin of the uplink component carrier using an offset value relative to a predetermined PUCCH format is converted into a computer-readable, computer-executable command. (41) Furthermore, an integrated circuit for a base station apparatus of the present invention is the integrated circuit used for the base station apparatus that receives a power safety margin for each uplink component carrier transmitted by an apparatus. of the mobile station, and the integrated circuit has a step of informing the mobile station apparatus of the plurality of uplink component carriers on which the mobile station apparatus activates reporting of the power safety margins. (42) Furthermore, an integrated circuit for a base station apparatus of the present invention is the integrated circuit used for the base station apparatus that receives a power safety margin for each uplink component carrier transmitted by an apparatus. of the mobile station and when the base station apparatus receives the power safety margin of a first uplink component carrier by a second uplink component carrier, the integrated circuit has a step of determining that the safety margin The power of the first uplink component carrier was calculated by the mobile station apparatus using a predetermined resource amount of a PUSCH. (43) Furthermore, an integrated circuit for a base station apparatus of the present invention is the integrated circuit used for the base station apparatus that receives a power safety margin for each uplink component carrier transmitted by an apparatus. of the mobile station, and the base station apparatus determines that the received power safety margin has been calculated by the mobile station apparatus using a predetermined PUCCH format. (44) Furthermore, an integrated circuit for a base station apparatus of the present invention is the integrated circuit used for the base station apparatus that receives a power safety margin for each uplink component carrier transmitted by an apparatus. of mobile station, and the integrated circuit has a step of determining that the received power safety margin has been calculated by the mobile station apparatus using an offset value with respect to a predetermined PUCCH format. (45) Furthermore, an integrated circuit for a mobile station apparatus of the present invention is the integrated circuit used for the mobile station apparatus which transmits a power safety margin for each uplink component carrier to a uplink apparatus. base station, and the integrated circuit has a step of enabling reporting of power safety margins on the plurality of uplink component carriers when a predetermined condition is satisfied. (46) Furthermore, an integrated circuit for a mobile station apparatus of the present invention is the integrated circuit used for the mobile station apparatus that transmits a power safety margin for each uplink component carrier to a uplink apparatus. base station and when the mobile station apparatus transmits the power safety margin of a first uplink component carrier by a second uplink component carrier, the integrated circuit has a step of calculating the power safety margin. of the first uplink component carrier using a predetermined amount of resources of a PUSCH. (47) Furthermore, an integrated circuit for a mobile station apparatus of the present invention is the integrated circuit used for the mobile station apparatus that transmits a power safety margin for each uplink component carrier to a uplink apparatus. base station, and the integrated circuit has a step of calculating the power safety margin of the uplink component carrier using a predetermined PUCCH format. (48) Furthermore, an integrated circuit for a mobile station apparatus of the present invention is the integrated circuit used for the mobile station apparatus that transmits a power safety margin for each uplink component carrier to a uplink apparatus. base station, and the integrated circuit has a step of calculating the power safety margin of the uplink component carrier using an offset value with respect to a predetermined PUCCH format. Advantage of the Invention
[00023] According to the present invention, a mobile station apparatus can perform an efficient transmission control of a power safety margin according to a frequency band to which carrier components to be subjected to frequency band aggregation belong, or configurations of a transmit antenna and a power amplifier of the mobile station apparatus. Brief description of the drawings
[00024] Figure 1 is a schematic block diagram showing a configuration of a base station apparatus 3 of the present invention; Figure 2 is a schematic block diagram showing a configuration of a mobile station apparatus 1 of the present invention; Fig. 3 is a sequence graph showing an example of operations of the mobile station apparatus 1 and the base station apparatus 3 of the present invention; Figure 4 is a diagram showing an example of a configuration of carrier components in accordance with a second embodiment of the present invention; Figure 5 is a diagram illustrating an example of a method of calculating a PH according to a third embodiment of the present invention; Figure 6 is a conceptual illustration of a wireless communication system of the present invention; Fig. 7 is a diagram showing an example of frequency band aggregation processing of the present invention; Figure 8 is a diagram showing an example of a configuration of carrier components of the present invention; Fig. 9 is a schematic illustration showing an example of a downlink radio frame configuration of the present invention; and Figure 10 is a schematic illustration showing an example of a configuration of a uplink radio frame of the present invention. Best Modes for Executing the Invention
[00025] Recently, a wireless access system and wireless network that achieve higher speed data communication (LTE-A) were examined in the 3GPP (Third Generation Partnership Project) using evolution of a wireless access system and a wireless cellular mobile communication (LTE) network and a frequency band wider than LTE. In LTE, an OFDM (Orthogonal Frequency Division Multiplexing) system, which is multi-carrier transmission, is used as a communication system for wireless communication from a base station apparatus to a mobile station apparatus (downlink ). Furthermore, an SC-FDMA (Single Carrier Frequency Division Multiple Access), which is single-carrier transmission, is used as a communication system for wireless communication from the mobile station apparatus to the transmission apparatus. base station (uplink).
[00026] Furthermore, in LTE, on the downlink, a SCH (Synchronization Channel), a PBCH (Physical Broadcast Channel), a PDCCH (Physical Downlink Control Channel), a PDSCH ( Downlink Shared Physical Channel), one PMCH (Multicast Physical Channel), one PCFICH (Physical Format Indication Control Channel), and one PHICH (Hybrid Automatic Repeat Request Indicator Physical Channel). Furthermore, on the uplink, a PUSCH, a PUCCH (Upward Link Physical Control Channel) and a PRACH (Random Access Physical Channel) are designated. First Mode
[00027] Next, a first embodiment of the present invention will be described in detail with reference to the drawings. Regarding Wireless Communication System
[00028] Figure 6 is a conceptual illustration of a wireless communication system of the present invention. In figure 6, the wireless communication system comprises the mobile station apparatus 1A to 1C and a base station apparatus 3. The mobile station apparatus 1A to 1C and the base station apparatus 3 perform communication using frequency band aggregation , which will be described next. Fig. 6 shows that in wireless communication from base station apparatus 3 to mobile station apparatus 1A to 1C (downlink), a SCH (Synchronization Channel), a downlink pilot channel (alternatively, also referred to as a "DL RS (Downlink Reference Signal)"), a PBCH (Physical Broadcast Channel), a PDCCH (Downlink Physical Control Channel), a PDSCH (Shared Physical Downlink Channel) Descent), one PMCH (Physical Multicast Channel), one PCFICH (Physical Format Indication Control Channel) and one PHICH (Hybrid Physical Channel HARQ Indicator).
[00029] Furthermore, Figure 6 shows that in wireless communication from the mobile station apparatus 1A to 1C to the base station apparatus 3 (uplink), an uplink pilot channel is designated (alternatively, also referred to as a "UL RS (Upward Link Reference Signal)"), a PUCCH (Upward Link Physical Control Channel), a PUSCH (Upward Link Shared Physical Channel) and a PRACH (Physical Access Channel Random). In the following, mobile station apparatus 1A to 1C are referred to as mobile station apparatus 1. Regarding Frequency Band Aggregation
[00030] Figure 7 is a diagram showing an example of frequency band aggregation processing of the present invention. In Figure 7, a horizontal axis indicates a frequency domain and a vertical axis indicates a time domain. As shown in Fig. 7, a D1 downlink subframe is comprised of subframes of four carrier components (one DCC-1 (Component Downlink Carrier 1), one DCC-2, one DCC-3 and one DCC -4), each having a bandwidth of 20 MHz. For each of the time multiplexed downlink carrier component subframes are in a region in which the PDCCH is allocated is indicated by a hatched region with lines in the form of a lattice, and a region in which the PDSCH is allocated is indicated by an unhatched region. For example, the base station apparatus 3 allocates a signal in the PDSCHs of one or more downlink carrier components of the four downlink carrier components in a certain downlink subframe, and transmits it to the downlink apparatus. mobile station 1.
[00031] Meanwhile, a U1 uplink subframe is comprised of two carrier components (one UCC-1 (Uplink Component Carrier-1) and one UCC-2) with a bandwidth of 20 MHz. each of the frequency multiplexed, uplink carrier component subframes are in a region in which the PUCCH is allocated is indicated by a hatched region with slanted lines in the form of a lattice, and a region in which the PUSCH is allocated is indicated by a hatched region with slanted lines rising from the lower left side to the upper right side. For example, the mobile station apparatus 1 allocates a signal in the PUSCH from one or more uplink carrier components of the two uplink carrier components into a certain uplink subframe, and transmits it to the uplink apparatus. base station 3.
[00032] Figure 8 is a diagram showing an example of a configuration of carrier components of the present invention. In figure 8, a horizontal axis indicates a frequency domain and the DCC1 and DCC-2, DCC-3 and DCC-4, and UCC-1 and UCC-2 are comprised of contiguous frequency bands in the domain. frequency. When the downlink carrier components are comprised of contiguous frequency bands as shown in Figure 8, a path loss measured in each downlink carrier component tends to be an approximate value of each other. Furthermore, the mobile station apparatus 1 can transmit and receive signals from the plurality of downlink carrier components and the plurality of uplink carrier components comprised of contiguous frequency bands using an antenna. Regarding Downlink Radio Frame
[00033] Figure 9 is a schematic illustration showing an example of a configuration of a downlink radio frame of the present invention. Figure 9 shows the radio frame configuration in a certain downlink carrier component. In Figure 9, a horizontal axis indicates a time domain and a vertical axis indicates a frequency domain. As shown in Figure 9, the radio frame of the downlink carrier component is comprised of a plurality of pairs of downlink PRBs (Physical Resource Blocks) (e.g., a region surrounded with a dashed line in the figure 9). This pair of downlink PRBs is a radio resource allocation unit, etc., and is comprised of a frequency band (PRB bandwidth; 180 kHz) with a predetermined width and a time zone (two intervals are equal to one subframe; 1 ms).
[00034] A pair of downlink PRBs is comprised of two downlink PRBs (bandwidth of PRB per slot) contiguous in the time domain. A downlink PRB (a unit surrounded with a thick line in Fig. 9) is comprised of twelve subcarriers (15 kHz) in the frequency domain and comprised of seven OFDM symbols (71 µs) in the time domain.
[00035] In the time domain, an interval (0.5 ms) comprised of seven OFDM (Orthogonal Frequency Division Multiplexing) symbols (71 µs), a subframe (1 ms) comprised of two intervals, and a frame are included. of radio (10 ms) comprised of ten subframes. In the frequency domain, the plurality of downlink PRBs are allocated according to a downlink carrier component bandwidth. It should be noted that a unit comprised of a subcarrier and an OFDM symbol is referred to as a downlink resource element.
[00036] Next, a designated channel in the downlink radio frame will be described. In each downlink subframe, for example, the PDCCH, the PDSCH and the DL RS are designated. First, the PDCCH will be described. The PDCCH is allocated from an OFDM symbol of a subframe head (hatched region with the slanted lines rising from the lower left side to the upper right side). It should be noted that the number of OFDM symbols in which the PDCCH is allocated differs for each subframe. In the PDCCH, a DCI (Downlink Control Information) signal is allocated which is comprised of information formats such as downlink designation (also referred to as DL grant) and uplink grant, and which is information used for communication control.
[00037] It should be noted that the downlink designation is comprised of information indicating a modulation scheme with respect to PDSCH, information indicating a coding scheme, information indicating radio resource allocation, information with respect to a HARQ (Request Auto-Repeat system), a TPC command, etc. Furthermore, the uplink grant is comprised of information indicating a modulation scheme with respect to the PUSCH, information indicating the coding scheme, information indicating radio resource allocation, information with respect to the HARQ, the TPC command, etc. . It should be noted that HARQ is a technology in which, for example, when the mobile station apparatus 1 (the base station apparatus 3) transmits data information decoding success/failure (ACK/NACK) to the station apparatus base 3 (the mobile station apparatus 1), and the mobile station apparatus 1 (the base station apparatus 3) cannot decode the data information because of an error (NACK), the base station apparatus 3 (the mobile station apparatus 1) retransmits the signal, and mobile station apparatus 1 (base station apparatus 3) performs decoding processing with respect to a signal composed of the newly received signal and the already received signal.
[00038] Next, the PDSCH will be described. The PDSCH is allocated in an OFDM symbol (no hatch region) other than the OFDM symbol in which the PDCCH of the subframe is allocated. A signal (referred to as a data signal) of data information (Transport Block) is allocated in the PDSCH. A radio resource of the PDSCH is designated using downlink designation, and is allocated in the same downlink subframe as the PDCCH including the downlink designation. Although an illustration of the DL RS is omitted in Figure 9 to simplify a description, the DL RS is allocated decentrally in the frequency domain and the time domain. With respect to Uplink Radio Frame
[00039] Figure 10 is a schematic illustration showing an example of a configuration of a uplink radio frame of the present invention. Figure 10 shows a radio frame configuration on a certain uplink carrier component. In Figure 10, a horizontal axis indicates a time domain and a vertical axis indicates a frequency domain. As shown in Fig. 10, the radio frame of the uplink carrier component is comprised of a plurality of pairs of uplink PRBs (e.g., a region surrounded with a dashed line in Fig. 10). This pair of uplink PRBs is a radio resource allocation unit, etc., and is comprised of a frequency band (PRB bandwidth; 180 kHz) with a predetermined width and a time zone (two intervals are equal to one subframe; 1 ms).
[00040] A pair of uplink PRBs is comprised of two continuous uplink PRBs (PRB bandwidth per slot) in the time domain. An uplink PRB (a unit surrounded with a thick line in Fig. 10) is comprised of twelve subcarriers (15 kHz) in the frequency domain and is comprised of seven SC-FDMA symbols (71 µs) in the time domain. In the time domain, an interval (0.5 ms) comprised of seven SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols (71 µs), a subframe (1 ms) comprised of two slots and one are included. radio frame (10 ms) comprised of ten subframes. In the frequency domain, the plurality of uplink PRBs are allocated according to a bandwidth of the uplink carrier component. It should be noted that a unit comprised of a subcarrier and an SC-FDMA symbol is referred to as an uplink resource element.
[00041] Next, a designated channel in the uplink radio frame will be described. In each uplink subframe, for example, the PUCCH, the PUSCH and the UL RS are designated. First, PUCCH will be described. The PUCCH is assigned to a pair of uplink PRBs (hatched region with the slanted lines rising from the lower left side to the upper right side) from both ends of an uplink carrier component bandwidth. In the PUCCH, a UCI (Uplink Control Information) signal is allocated which is the information used to control communication, such as channel quality information indicating a downlink channel quality, an SR (Scaling Request ) indicating a request for uplink radio resource allocation, and ACK/NACK with respect to PDSCH.
[00042] Next, the PUSCH will be described. The PUSCH is assigned to a pair of uplink PRBs (non-hatched region) other than the uplink PRB to which the PUCCH is allocated. In the PUSCH, a signal from the UCI and the data information (Transport Block) is allocated, which is information other than the UCI. A radio resource of the PUSCH is designated using uplink grant, and is allocated a uplink subframe of a subframe after a predetermined time has elapsed since the subframe that received the PDCCH including the uplink grant. Although UL RS is time multiplexed with PUCCH and PUSCH, a detailed description of it is omitted to simplify the description. Regarding Base Station Apparatus Configuration 3
[00043] Figure 1 is a schematic block diagram showing a configuration of the base station apparatus 3 of the present invention. As shown in the drawing, the base station apparatus 3 is configured to include a higher layer processing unit 101, a control unit 103, a receiving unit 105, a transmitting unit 107 and a transmit/receive antenna. 109. Furthermore, the higher layer processing unit 101 is configured to include a radio resource control unit 1011 and a power safety margin setting unit 1013. Furthermore, the receiving unit 105 is configured to include a decoding unit 1051, a demodulation unit 1053, a separation multiplexing unit 1055 and a radio receiving unit 1057. Furthermore, the transmission unit 107 is configured to include an encoding unit 1071 , a modulation unit 1073, a multiplexing unit 1075, a radio transmission unit 1077, and a DL RS generation unit 1079. It should be noted that, in figure 1, the apparatus the base station 3 performs transmitting a plurality of downlink carrier components and receiving a plurality of uplink carrier components via a transmit/receive antenna 109.
[00044] The higher layer processing unit 101 sends data information for each downlink carrier component to the transmission unit 107. Furthermore, the higher layer processing unit 101 performs one-layer processing PDCP (Packet Data Convergence Protocol), an RLC (Radio Link Control) layer and an RRC (Radio Resource Control) layer. The radio resource control unit 1011 comprised in the higher layer processing unit 101 allocates the plurality of uplink carrier components and downlink carrier components to the mobile station apparatus 1 in accordance with the number of downlink carrier components and uplink carrier components that can be used for wireless communication by the base station apparatus 3, and the number of downlink carrier components and uplink carrier components which can be transmitted or received simultaneously by the mobile station apparatus 1, etc.
[00045] Furthermore, the radio resource control unit 1011 generates information to be allocated on each channel of each downlink carrier component, or obtains it from a higher node, and sends it to the unit. transmission 107. Furthermore, the radio resource control unit 1011 allocates to the mobile station apparatus 1 a radio resource to which the mobile station apparatus 1 allocates the PUSCH (data information) of the component radio resources of uplink carrier allocated to the mobile station apparatus 1. Furthermore, the radio resource control unit 1011 decides a radio resource in which the PDSCH (data information) is allocated among the radio resources of the downlink carrier component. The radio resource control unit 1011 generates downlink designation and uplink grant indicating the radio resource allocation, and transmits them to the mobile station apparatus 1 by means of the transmitting unit 107.
[00046] It should be noted that the radio resource control unit 1011 controls an amount of a radio resource of the PUSCH to be allocated to the mobile station apparatus 1 based on a remaining power value (PH) with respect to the PUSCH received from the mobile station apparatus 1. Next, a PH with respect to the PUSCH is simply referred to as the PH in the first to fourth embodiments. Specifically, when a PH received from the mobile station apparatus 1 is positive, the base station apparatus 3 determines that the mobile station apparatus 1 still has transmission power remaining, and allocates much more radio resources for PUSCH transmission to the mobile station 1, and when the PH received from the mobile station apparatus 1 is negative the base station apparatus 3 determines to have requested from the mobile station apparatus 1 transmission power exceeding a maximum transmit power value of the mobile station apparatus 1, and allocates much less radio resources for PUSCH transmission to mobile station apparatus 1.
[00047] Furthermore, the radio resource control unit 1011 generates control information in order to control the receiving unit 105 and the transmitting unit 107 based on UCI (ACK/NACK, channel quality information, an SR) informed by means of the PUCCH by the mobile station apparatus 1, and in a temporary storage condition informed by the mobile station apparatus 1 and in various configuration information of each mobile station apparatus 1 established by the resource control unit of radio 1011, and sends the control information to the control unit 103.
[00048] The power safety margin establishing unit 1013 sets, for each mobile station apparatus 1, a periodicPHR-Timer, a prohibitPHR-Timer, a dl-PathlossChange, downlink carrier component in which path losses are monitored to control a PH, and a maximum transmit power value for each uplink component carrier, generates information regarding the establishment, and transmits it to the mobile station apparatus 1 by means of the transmission unit 107. It shall It will be noted that the maximum transmit power value is the maximum power value that can be used in the mobile station apparatus 1 transmitting an uplink channel. Furthermore, the power safety margin setting unit 1013 can also perform setting such that the mobile station apparatus 1 cannot transmit the PH for each uplink carrier component.
[00049] The control unit 103 generates a control signal that performs control of the receiving unit 105 and the transmitting unit 107 based on the control information coming from the higher layer processing unit 101. The control unit 103 sends the control signal is generated for the receiving unit 105 and the transmitting unit 107, and performing control of the receiving unit 105 and the transmitting unit 107.
[00050] The receiving unit 105 separates, demodulates and decodes the signal received from the mobile station apparatus 1 by means of the transmit/receive antenna 109 according to the control signal inputted by the control unit 103, and sends the decoded information to the higher layer processing unit 101. The radio receiving unit 1057 converts (downconverts) into an intermediate frequency the signal of each uplink carrier component received via the transmit/receive antenna, removes an unnecessary frequency component, controls an amplification level so that a signal level is properly maintained, orthogonally demodulates the signal based on an in-phase component and an orthogonal component of the received signal, and converts the demodulated analog signal orthogonally in a digital signal. The radio receiving unit 1057 removes a portion corresponding to a GI (Safety Interval) from the converted digital signal. The radio receiving unit 1057 performs FFT (Fast Fourier Transform) with respect to the signal from which the GI has been removed, extracts a signal in the frequency domain, and sends it to the multiplexing separation unit 1055.
[00051] The multiplexing separation unit 1055 separates the signals inputted by the radio receiving unit 1057 into signals such as the PUCCH, the PUSCH, and the UL RS for each uplink carrier component, respectively. It should be noted that this separation is performed based on the radio resource allocation information that the base station apparatus 3 has previously decided and has informed each mobile station apparatus 1. Furthermore, the multiplexing separation unit 1055 calculates an estimate value of a channel from the separate UL RS, and offsets the channel from the PUCCH and the PUSCH.
[00052] The demodulation unit 1053 performs IDFT (Discrete Inverse Fourier Transform) of the PUSCH, obtains a modulation symbol, and demodulates the received signal with respect to each modulation symbol of the PUCCH and PUSCH using a predetermined modulation scheme or a modulation scheme that the base station apparatus 3 has previously informed each mobile station apparatus 1 in the uplink grant, such as BPSK (Binary Phase Shift Switching), QPSK (Quadrature Phase Switching), 16QAM (16 Quadrature Amplitude Modulation) and 64QAM (64 Quadrature Amplitude Modulation). The decoding unit 1051 decodes the demodulated coded bits of the PUCCH and the PUSCH using a coding rate of a predetermined coding scheme which is predetermined or informed in advance to the mobile station apparatus 1 by the base station apparatus 3 in the link grant of climb, and sends the decoded data information and the UCI to the higher layer processing unit 101.
[00053] The transmission unit 107 generates a DL RS according to the control signal inputted by the control unit 103, encodes and modulates the data information and the DCI that have been inputted by the higher layer processing unit 101, multiplexes the PDCCH, the PDSCH and the DL RS, and transmits the signal to the mobile station apparatus 1 via the transmit/receive antenna 109. The encoding unit 1071 performs encoding such as turbo encoding, convolution encoding, encoding of block, DCI of each downlink carrier component and data information that has been input by higher layer processing unit 101. Modulation unit 1073 modulates the encoded bit using a modulation scheme such as QPSK, 16QAM and 64QAM. The DL RS generation unit 1079 generates as a DL RS a known sequence of the mobile station apparatus 1 which can be calculated by means of a predetermined rule based on a cell ID to identify the base station apparatus 3. 1075 multiplexing multiplexes each modulated channel and the generated DL RS.
[00054] The radio transmission unit 1077 performs IFFT (Inverse Fast Fourier Transform) of the multiplexed modulation symbol to thus perform modulation of an OFDM system, adds a GI to the OFDM symbol modulated in OFDM, generates a one-band digital signal base, converts the baseband digital signal to an analog signal, generates an in-phase component and an orthogonal component of an intermediate frequency of the analog signal, removes an excessive frequency component with respect to an intermediate frequency band, converts (converts from ascending form) a signal with the intermediate frequency into a signal with a high frequency, removes an excessive frequency component, amplifies power, and sends the signal to the transmit/receive antenna 109 for transmission. Regarding Mobile Station Apparatus Configuration 1
[00055] Figure 2 is a schematic block diagram showing a configuration of the mobile station apparatus 1 of the present invention. As shown in the drawing, the mobile station apparatus 1 is configured to include a higher layer processing unit 201, a control unit 203, a receiving unit 205, a transmission unit 207, a loss measuring unit path 209 and a transmit/receive antenna 211. Furthermore, the higher layer processing unit 201 is configured to include a 2011 radio resource control unit, a 2013 transmit power control unit, and a 2015 power safety margin control unit. Furthermore, the receiving unit 205 is configured to include a decoding unit 2051, a demodulation unit 2053, a separation multiplexing unit 2055 and a radio receiving unit 2057. Furthermore, the transmission unit 207 is configured to include a coding unit 2071, a modulation unit 2073, a multiplexing unit 2075, a transmission unit. are radio 2077 and a UL RS 2079 generation unit. It should be noted that, in Figure 2, the mobile station apparatus 1 performs reception of a plurality of downlink carrier components, and transmission of a plurality of downlink carrier components. uplink carrier via a transmit/receive antenna 211.
[00056] The higher layer processing unit 201 sends data information to each uplink carrier component generated by user operation, etc. to the transmission unit 207. Furthermore, the higher layer processing unit 201 performs PDCP layer, RLC layer, and RRC layer processing. The radio resource control unit 2011 comprised in the higher layer processing unit 201 manages various configuration information, such as the downlink carrier component and the uplink carrier component, assigned to the device. mobile station 1 itself. Furthermore, the radio resource control unit 2011 generates information to be allocated on each channel of each uplink carrier component, and sends it to the transmission unit 207 for each uplink carrier component. The radio resource control unit 2011 generates control information in order to control the receiving unit 205 and the transmitting unit 207 based on the DCI (e.g., downlink designation and uplink grant) reported by means of the PDCCH by the base station apparatus 3, and in various configuration information of the mobile station apparatus 1 itself managed by the radio resource control unit 2011, and sends the control information to the control unit 203.
[00057] In the transmission power control unit 2013 comprised in the higher layer processing unit 201, the transmission power Preq to satisfy a predetermined communication quality for each uplink carrier component in the base station apparatus 3 and the transmission power PPUSCH(i) of the PUSCH which is actually used by the mobile station apparatus 1 are calculated on the basis of formula (1) using a PUSCH radio resource allocation and modulation scheme which is informed by means of assignment a downlink signal, a TPC command, a path loss of the downlink carrier component introduced by the path loss measuring unit 209, a parameter reported by the base station apparatus 3, etc. The transmit power of the PUSCH can also be represented as transmit power of the UL-SCH (Upward Link Shared Channel) allocated in the PUSCH. UL-SCH is a transport channel transmitted over PUSCH.
[00058] When the 2013 transmit power control unit is instructed to calculate a PH by the 2015 power safety margin control unit, it calculates the PHs of all uplink carrier components designated by the station apparatus base 3 on the basis of formula (2), and transmits them to the base station apparatus 3 by means of the transmission unit 207. It should be noted that an MPUSCH when calculating a PH is defined to be the number of PRBs for PUSCH transmission designated for each of the uplink carrier components at a time when the PH is transmitted. Furthermore, the calculated PH for each uplink carrier component is collectively configured as a MAC (Media Access Control) CE (Control Element).
[00059] The 2015 power safety margin control unit comprised in the higher layer processing unit 201 monitors change of a downlink carrier component reported by the base station apparatus 3 or of a component path loss of downlink carrier that the mobile station apparatus 1 has accessed first, and controls transmission of the PH using two timers (the periodicPHR-Timer and the prohibitPHR-Timer) and a dl-PathlossChange value that have been reported by the station apparatus base 3. The mobile station apparatus 1 decides to transmit the PH in a case applied to at least one of the items described below. PH broadcast decision is also referred to as triggering a PH report. That is, the cases where the mobile station apparatus 1 decides to transmit the PH are the following: a case where the prohibitPHR-Timer has expired and, additionally, a path loss changes more than the dl-PathlossChange [dB] by one downlink carrier component reported by the base station apparatus 3, or in a downlink carrier component that the mobile station apparatus 1 has accessed first after the mobile station apparatus 1 transmits the PH on a radio resource uplink (PUSCH) as initial transmission; a case where the periodicPHR-Timer has expired; and a case where a PH transmission functionality is configured or reconfigured by the higher layer, and thus configuration is not the configuration by which PH transmission cannot be performed.
[00060] When the mobile station apparatus 1 has decided to transmit PH and additionally decides to transmit PH via PUSCH based on a priority of a data signal at a time of having been allocated with the radio resource of uplink (PUSCH) used for initial transmission, the mobile station apparatus 1 instructs the transmit power control unit 2013 to calculate the PH and to send it to the transmission unit 207. mobile station 1 starts or restarts periodicPHR-Timer and prohibitPHR-Timer.
[00061] The control unit 203 generates a control signal that performs control of the receiving unit 205 and the transmission unit 207 based on the control information coming from the higher layer processing unit 201. The control unit 203 sends the control signal generated for the receiving unit 205 and for the transmission unit 207, and performs control of the receiving unit 205 and the transmission unit 207.
[00062] The receiving unit 205 separates, demodulates and decodes the signal received from the base station apparatus 3 by means of the transmit/receive antenna 211 according to the control signal inputted by the control unit 203, and sends the decoded information to the higher layer processing unit 101. The radio receiving unit 2057 converts (downconverts) to an intermediate frequency the signal from each downlink carrier component received via each transmit/receive antenna , removes an unnecessary frequency component, controls an amplification level so that a signal level can be properly maintained, orthogonally demodulates the signal based on an in-phase component and an orthogonal component of the received signal, and converts the analog signal demodulated orthogonally into a digital signal. The radio receiving unit 2057 removes a portion corresponding to the GI from the converted digital signal, performs FFT with respect to the signal from which the GI has been removed, and extracts frequency domain signals.
[00063] The multiplexing separation unit 2055 separates the extracted signals from the PDCCH, the PDSCH and the DL RS for each downlink carrier component, respectively. It should be noted that this separation is performed based on the radio resource allocation information provided by the downlink designation. Furthermore, the separation multiplexing unit 2055 calculates a channel estimate value of the separate DL RS, and compensates the channel of the PDCCH and the PDSCH. Furthermore, the separation multiplexing unit 2055 sends the separate DL RS to the path loss measurement unit 209.
[00064] The demodulation unit 2053 demodulates the PDCCH into a QPSK modulation scheme, and sends it to the decoding unit 2051. When the decoding unit 2051 that tries to decode the PDCCH achieves success in decoding, it sends the decoded DCI to the higher layer processing unit 201. The demodulation unit 2053 demodulates the PDSCH in the reported modulation scheme by means of downlink designation, such as QPSK, 16QAM and 64QAM, and sends it to the decoding unit 2051. The decoding unit 2051 decodes an encoding rate informed by the downlink designation, and sends the decoded data information to the higher layer processing unit 201.
[00065] The path loss measurement unit 209 measures a path loss for each downlink carrier component from the DL RS introduced by the multiplexing separation unit 2055, and sends the measured path loss to the unit. of higher layer processing 201.
[00066] The transmission unit 207 generates a UL RS according to the control signal inputted by the control unit 203, encodes and modulates the data information inputted by the higher layer processing unit 201, multiplexes the PUCCH, the PUSCH and the generated UL RS, and transmits them to the base station apparatus 3 via the transmit/receive antenna 211. The encoding unit 2071 performs encoding, such as turbo encoding, convolution encoding, block encoding, of the UCI of each uplink carrier component and data information that has been inputted by the higher layer processing unit 201. The modulation unit 2073 modulates the coded bit inputted by the coding unit 2071 into the modulation scheme, such as BPSK, QPSK, 16QAM and 64QAM.
[00067] The UL RS 2079 generating unit generates as a UL RS a known sequence of the base station apparatus 3 which can be calculated by means of a predetermined rule based on a cell ID to identify the base station apparatus 3. The multiplexing unit 2075 performs DFT (Discrete Fourier Transform) after rearranging the PUSCH modulation symbols in parallel, and multiplexes the PUCCH, the PUSCH signal and the generated UL RS. The radio transmission unit 2077 performs IFFT from the multiplexed signal to modulate using an SC-FDMA system, adds the GI to the SC-FDMA modulated SC-FDMA symbol, generates a baseband digital signal, converts the digital signal from the band based on an analog signal, generates an in-phase component and an orthogonal component of an intermediate frequency of the analog signal, removes an excessive frequency component with respect to an intermediate frequency band, converts (upconverts) a signal with the frequency intermediate in a signal with a high frequency, removes an excess frequency component, amplifies power, and sends the signal to transmit/receive antenna 211 for transmission.
[00068] Regarding Wireless Communication System Operation
[00069] Figure 3 is a sequence graph showing an example of operations of the mobile station apparatus 1 and the base station apparatus 3 of the present invention. The base station apparatus 3 informs the mobile station apparatus 1 about information including setting with respect to PHs, such as the maximum transmit power value for each uplink component carrier, periodicPHR-Timer, the prohibitPHR-timer , dl-PathlossChange, and a downlink carrier component in which a path loss is monitored in order to control the PH (step S100). The mobile station apparatus 1 monitors the path loss of the downlink carrier component reported by the base station apparatus 3, and manages the periodicPHR-Timer and prohibitPHR-Timer that have been reported by the base station apparatus 3 (step S101).
[00070] The mobile station apparatus 1 monitors the path loss of the downlink carrier component reported by the base station apparatus 3, and when the prohibitPHR-Timer has expired and additionally the path loss changes more than the dl-PathlossChange [dB] in the downlink carrier component reported by the base station apparatus 3 after the mobile station apparatus 1 transmits the PH on the uplink radio resource (PUSCH) as initial transmission, or when the periodicPHR- Timer has expired, or when the PH transmission functionality is configured or reconfigured by the highest layer, and the configuration is not the configuration by which PH transmission cannot be performed, the mobile station apparatus decides PH transmission (step S102).
[00071] Base station apparatus 3 transmits to mobile station apparatus 1 uplink grant indicating radio resource designation of PUSCH for initial transmission, etc. (step S103). When the mobile station apparatus 1 has decided to transmit the PH and is allocated with the radio resource of the PUSCH for initial transmission, it calculates the PHs with respect to all uplink carrier components designated by the base station apparatus 3 ( step S104). As mentioned later, when the radio resource for initial transmission or retransmission is not assigned to the uplink carrier component in step S104, the mobile station apparatus calculates a PH by determining that the predetermined number of PRBs has been assigned to the uplink carrier component.
[00072] The mobile station apparatus 1 transmits the calculated PH using the PUSCH to which the radio resource for initial transmission has been assigned (step S105), and starts or resets the periodicPHR-Timer and the prohibitPHR-Timer (step S106 ). The base station apparatus 3 receives the PUSCH which has assigned the radio resource to the mobile station apparatus 1 in step S103, and obtains the PH (step S107). The mobile station apparatus 1 completes processing with respect to transmitting and receiving the PH after steps S106 and S107, and returns to monitoring the path loss in step S101 and to managing a timer.
[00073] It should be noted that although the base station apparatus 3 informs the mobile station apparatus 1 regarding the uplink carrier component for which frequency band aggregation is performed in the modality, the base station apparatus 3 can inform mobile station apparatus 1 only about the downlink carrier component used for wireless communication, and mobile station apparatus 1 can use for frequency band aggregation the uplink carrier component to which the reported downlink carrier component matches. In this case, information indicating the uplink carrier component corresponding to the downlink carrier component is provided or broadcast to the mobile station apparatus 1 by the base station apparatus 3.
[00074] As shown in figure 8, when downlink carrier components for which frequency band aggregation is performed are configured in contiguous frequency domain, path losses of downlink carrier components indicate values approximate each other, and if a path loss of any downlink carrier component is known, the path losses of the other downlink carrier components can be estimated. Consequently, it is only necessary for the mobile station apparatus 1 to measure a path loss of a downlink carrier component and monitor path loss change to control a PH in a downlink carrier component.
[00075] As described above, according to the modality, the mobile station apparatus 1 manages a PH, which is a difference between a maximum transmit power value established for each uplink carrier component and a value predetermined power output for uplink transmission, monitors a path loss of a predetermined downlink carrier component of the plurality of downlink carrier components, and when a path loss of a certain downlink carrier component of downlink changes more than a predetermined value, the mobile station apparatus 1 decides to transmit the PHs for uplink transmission corresponding to all downlink carrier components set by the base station apparatus 3. As a result of this, a since the number of downlink carrier components in which the mobile station apparatus 1 monitors the change of loss of path can be reduced, load of mobile station apparatus 1 when monitoring the change of path loss can be reduced, and timers can be managed in common across all downlink carrier components, thus resulting in easy management of timers. Second Mode
[00076] Next, a second embodiment of the present invention will be described. In the second embodiment of the present invention, a case will be described where the mobile station apparatus 1 monitors the change of path losses of all downlink carrier components designated by the base station apparatus 3. By comparing a communication system without wire according to this embodiment with the wireless communication system according to the first embodiment, there is a difference in the higher layer processing unit 201 of the mobile station apparatus 1 and the higher layer processing unit 101 of the apparatus 3. However, since settings and functions of the other components are the same as in the first modality, a description of the same functions as in the first modality is omitted.
[00077] When compared with the power safety margin setting unit 1013 of the higher layer processing unit 101 of the base station apparatus 3 of the first embodiment, there is a difference in that the PH setting unit 1013 of the unit higher layer processing method 101 of the base station apparatus 3 of the modality does not set a downlink carrier component in which a path loss is monitored to control a PH, and sets a different dl-PathlossChange for each carrier component of downlink. Since the other functions of the power safety margin establishing unit 1013 according to the embodiment are the same as those of the power safety margin establishing unit 1013 according to the first embodiment, a description of the same functions as those of the first mode is omitted.
[00078] When compared with the 2015 power safety margin control unit of the highest layer processing unit 201 of the mobile station apparatus 1 of the first mode, there is a difference in that the safety margin control unit of 2015 power of the highest layer processing unit 201 of the modality mobile station apparatus 1 monitors the change of path losses of all downlink carrier components designated by the base station apparatus 3. Furthermore, there is a difference in that the mobile station apparatus 1 decides to transmit the PH in a case applied to an item described below. That is, it is the case where the prohibitPHR-Timer has expired, and the path loss has changed more than the dl-PathlossChange [dB] set for each downlink carrier component in at least one of the downlink carrier components. descent designated by the base station apparatus 3 after the mobile station apparatus 1 transmits the PH as the initial transmission.
[00079] Since the other functions of the 2015 power safety margin control unit according to the mode are the same as those of the 2015 power safety margin control unit according to the first mode, a description of the functions equal to those of the first modality is omitted.
[00080] Figure 4 is a diagram showing an example of a configuration of carrier components according to the second embodiment of the present invention. In figure 4, a horizontal axis indicates a frequency domain, the DCC-1, the DCC-2 and the UCC-1 are comprised of carrier components of contiguous frequency bands in the frequency domain, the DCC-3, the DCC -4 and the UCC-2 are comprised of DCs from contiguous frequency bands in the frequency domain, and a group of DCC-1, DCC-2 and UCC-1, and a group of DCC-3, DCC- 4 and the UCC-2 are configured in frequency domains spaced apart from each other in the frequency domain.
[00081] As described above, since the downlink carrier components widely spaced from each other in the frequency domain differ in an effect of path loss, it becomes possible to efficiently control the PH when setting the Different dl-PathlossChange for each downlink carrier component as in modality. For example, a large value of dl-PathlossChange can be set for the downlink carrier component in which path loss changes easily because of displacement of mobile station apparatus 1, a small value of dl-PathlossChange can be set. set for the downlink carrier component in which the path loss does not change easily.
[00082] Furthermore, when frequencies of the downlink carrier components are widely spaced as shown in figure 4, the mobile station apparatus 1 can transmit signals from the plurality of downlink carrier components using different antennas and APs. For example, in Figure 4, the transmit/receive antenna 211 and the PA of the mobile station apparatus 1 which are used for transmitting and receiving signals differ in DCC-1, DCC-2 and UCC-1, and in the DCC-3, DCC-4 and UCC-2. As described above, when different transmit/receive antennas 211-1 and 211-2 are used in accordance with the downlink carrier components, imbalance can occur in antenna gain. For example, since rapid change of path losses can be considered only in a part of the antennas because of an effect of an obstacle, the mobile station apparatus 1 can accurately control PH transmission by monitoring the change of path losses of all downlink carrier components established by the base station apparatus 3 to use for wireless communication.
[00083] It should be noted that since only the path losses on the part of the downlink carrier components can also change quickly when the base station apparatus 3 cannot determine which type of transmit/receive antenna configuration 211 that the mobile station apparatus 1 is using to perform wireless communication, the mobile station apparatus 1 can accurately control PH transmission independent of the configuration of the transmit/receive antenna 211 of the mobile station apparatus 1 by monitoring the change of losses path of all downlink carrier components designated by the base station apparatus 3.
[00084] It should be noted that although the mobile station apparatus 1 monitors the change of path loss of a downlink carrier component in the first mode, and the mobile station apparatus 1 monitors the path losses of all components of downlink carrier components set by the base station apparatus 3 in the second mode, the base station apparatus 3 can set the number of downlink carrier components in which changes of path losses are monitored according to the configuration of the transmit/receive antenna 211 of the mobile station apparatus 1 for informing the mobile station apparatus 1. In this case, it is necessary to transmit to each base station apparatus 3 information indicating the configuration of the transmit/receive antenna 211 of the station apparatus itself mobile, or to infer the configuration of the transmit/receive antenna 211 of the mobile station apparatus 1 from information such as the PH that the base station apparatus 3 receives from mobile station apparatus 1. As a result of this, it becomes possible to perform an efficient transmission control of the PH according to the configuration of the transmit/receive antenna 211 of the mobile station apparatus 1.
[00085] It should be noted that although PH has been calculated for each uplink carrier component in the first and second modes, such as PH, a value obtained by subtracting from the maximum transmit power value of the uplink apparatus can be calculated. mobile station 1 a total of the estimated predetermined power values for the uplink transmission of the uplink carrier components that the transmit/receive antenna 211 and the PA comprised in the mobile station apparatus 1. As a result of this, the base station apparatus 3 can recognize remaining power for each PA comprised in mobile station apparatus 1, and thus power control in the uplink according to the configuration of the PA of mobile station apparatus 1 can be performed.
[00086] It should be noted that although, as a MAC CE, the PHs of all uplink carrier components assigned to mobile station apparatus 1 by the base station apparatus, or of all carrier components have been configured of uplink corresponding to downlink carrier components assigned to the mobile station apparatus 1 by the base station apparatus 3 in the first and second embodiments, the different MAC CE for each PH can be configured. In this case, when the mobile station apparatus transmits all MAC CEs including the PHs, the power safety margin control unit 2015 starts or resets the periodicPHR-Timer and the prohibitPHR-Timer. That is, even if the mobile station apparatus transmits the PH from the uplink carrier components part, the 2015 power safety edge control unit does not start or reset the periodicPHR-Timer and the prohibitPHR-Timer. Alternatively, when the mobile station apparatus 1 transmits all PHs with respect to uplink carrier components corresponding to downlink carrier components in which path losses have changed more than dl-PathlossChange [dB] , the PH 2015 control unit can start or restart periodicPHR-Timer and prohibitPHR-Timer. Third Mode
[00087] Next, a third embodiment of the present invention will be described. In the third embodiment of the present invention, a method for calculating a PH will be described when no PRB for PUSCH transmission is assigned to a certain uplink carrier component at a time when the mobile station apparatus 1 transmits a PH corresponding to the uplink component. uplink carrier. When comparing a wireless communication system according to this modality with the wireless communication system according to the first modality, there is a difference in the transmit power control unit 2013 of the mobile station apparatus 1 and in the control unit of radio feature 1011 of the base station apparatus 3. However, since settings and functions of the other components are the same as in the first mode, a description of the same functions as in the first mode is omitted.
[00088] In the first mode, in the transmission power control unit 2013 of the mobile station apparatus 1, an MPUSCH when calculating a PH by Formula (2) is defined to be the number of PRBs for PUSCH transmission assigned to the component of uplink carrier to which the PH corresponds at a time when the PH is transmitted. However, when the PRB for PUSCH transmission is not assigned to the uplink carrier component at a time of transmitting a PH corresponding to a certain uplink carrier component (i.e., the time when the station apparatus mobile 1 has decided to transmit PH, a PUSCH for initial transmission has been assigned to any uplink carrier component and/or mobile station apparatus 1 decides to transmit PH in PUSCH based on priority of a data signal) , that is, when MPUSCH is "0", there is a problem where PH cannot be calculated by Formula (2).
[00089] Consequently, when the PRB for PUSCH transmission is not assigned to a certain uplink carrier component at a time of transmitting the PH corresponding to the uplink carrier component, the transmit power control unit 2013 of the third mode mobile station apparatus 1 calculates the PH by determining the predetermined number (e.g. "1", or the number of PRBs designated in the last minute for PUSCH transmission in the uplink carrier component to which the PH corresponds , or the number of PRBs assigned to the PUSCH in the uplink carrier component on which the PH is transmitted, etc.) of PRBs for PUSCH transmission has been assigned to the uplink carrier component. That is, the transmit power control unit 2013 calculates the PH by determining that the MPUSCH is a predetermined value.
[00090] Figure 5 is a diagram illustrating an example of a method of calculating a PH according to the third embodiment of the present invention. Two uplink carrier components (UCC-1 and UCC-2) are shown in Figure 5. In these two uplink carrier components, a horizontal axis indicates a frequency domain, a vertical axis indicates a time domain , and a hatched region with slanted lines indicates a radio resource for PUSCH transmission assigned to the UCC-2. Furthermore, in figure 5, there are shown transmit power Preq of the PUSCH of the UCC-1, a value of maximum transmit power PCMAX of the UCC-1 and a safety margin of power PH of the UCC-1 which are calculated by the unit. of transmission power control 2013. Here, as for the transmission power Preq, the maximum transmission power value PCMAX and the power safety margin PH, a vertical axis indicates power.
[00091] When the transmit power control unit 2013 calculates a PH of the UCC-1 in the uplink carrier component, UCC-1, for which the radio resource for PUSCH transmission in Fig. 5 is not assigned, it calculates the PUSCH transmit power Preq by determining the predetermined number (e.g., "1", or the number of PRBs designated in the last minute for PUSCH transmission in the uplink carrier component to which the PH corresponds, or the number of PRBs assigned to the PUSCH in the uplink carrier component on which the PH is transmitted, etc.) of PRBs for PUSCH transmission was assigned to the UCC-1 (step T100). Next, the transmit power control unit 2013 calculates the power safety margin PH by Formula (2) using the transmit power Preq of the PUSCH of the UCC-1 and the maximum transmit power PCMAX value of the UCC-1 , and the mobile station apparatus 1 transmits the PH of the UCC-1 on the PUSCH of the UCC-2 (step T101).
[00092] Furthermore, when the radio resource control unit 1011 of the base station apparatus 3 of the third mode receives a PH of an uplink carrier component to which the PRB for PUSCH transmission is not assigned, it determines that the received PH is the PH that the transmit power control unit 2013 of the mobile station apparatus 1 calculates assuming that the predetermined number of PRBs for PUSCH transmission has been assigned.
[00093] As a result of this, the mobile station apparatus 1 can calculate PH by Formula (2) also when PRB for PUSCH transmission is not assigned to a certain uplink carrier component at the time of transmitting PH corresponding to uplink carrier component.
[00094] It should be noted that the PH calculation method can also be applied when the mobile station apparatus transmits each PH report corresponding to the uplink carrier component at different times. Furthermore, the calculation method can also be applied when the mobile station apparatus 1 transmits the PH corresponding to a uplink carrier component. Furthermore, the calculation method can also be applied when the mobile station apparatus 1 monitors a path loss and/or path loss change in one or more downlink carrier components. Furthermore, the calculation method can also be applied when the base station apparatus 3 selects the uplink carrier component on which the PH is transmitted to inform the mobile station apparatus. Fourth Mode
[00095] Next, a fourth embodiment of the present invention will be described. In the fourth embodiment of the present invention a method for calculating a PH when the mobile station apparatus 1 transmits the PH corresponding to a certain uplink carrier component in a PUSCH assigned to a different uplink carrier component will be described. When comparing a wireless communication system according to this modality with the wireless communication system according to the first modality, there is a difference in the transmit power control unit 2013 of the mobile station apparatus 1 and in the control unit of radio feature 1011 of the base station apparatus 3. However, since settings and functions of the other components are the same as in the first mode, a description of the same functions as in the first mode is omitted.
[00096] In the first mode, in the transmit power control unit 2013 of the mobile station apparatus 1, an MPUSCH when calculating a PH by Formula (2) is defined to be the number of PRBs for PUSCH transmission assigned to the component of uplink carrier to which the PH corresponds at a time when the PH is transmitted. Meanwhile, when the mobile station apparatus 1 fails to detect uplink grant even though the base station apparatus 3 assigns a radio resource to a certain uplink carrier component, and transmits the uplink grant indicating the radio resource assignment to the mobile station apparatus 1, the mobile station apparatus 1 determines that the radio resource is not assigned to the uplink carrier component, calculates a PH to transmit, but the base station apparatus 3 recognizes that it has received the PH calculated on the basis of the radio resource designated by the base station apparatus 3 itself, thus having caused a problem of different interpretations of the PH between the mobile station apparatus 1 and the base station apparatus 3.
[00097] Consequently, when a PH corresponding to a certain uplink carrier component is transmitted on a designated PUSCH to a different uplink carrier component, the transmit power control unit 2013 of the mobile station apparatus 1 of the fourth mode calculates the PH by determining the predetermined number (e.g., the number of PRBs assigned to the PUSCH in the uplink carrier component on which the PH is transmitted, etc.) of PRBs for PUSCH transmission. That is, the transmit power control unit 2013 calculates the PH by determining that the MPUSCH is a predetermined value.
[00098] Furthermore, when the radio resource control unit 1011 of the base station apparatus 3 of the fourth mode receives the PH corresponding to the certain uplink carrier component in the PUSCH assigned to the uplink carrier component different climb, it determines that the received PH is the PH that the transmit power control unit 2013 of the mobile station apparatus 1 calculates assuming that the predetermined number of PRBs for PUSCH transmission has been assigned.
[00099] As a result of this, also when the mobile station apparatus 1 fails to detect the uplink grant transmitted by the base station apparatus 3, PH interpretations between the mobile station apparatus 1 and the mobile station apparatus can be avoided. base station 3 are different from each other.
[000100] It should be noted that the PH calculation method can also be applied when the mobile station apparatus transmits each PH report corresponding to the uplink carrier component at different times. Furthermore, the calculation method can also be applied when the mobile station apparatus 1 transmits the PH corresponding to a uplink carrier component. Furthermore, the calculation method can also be applied when the mobile station apparatus 1 monitors a path loss and/or path loss change in one or more downlink carrier components. Furthermore, the calculation method can also be applied when the base station apparatus 3 selects the uplink carrier component on which the PH is transmitted to inform the mobile station apparatus. Fifth Mode
[000101] Next, a fifth embodiment of the present invention will be described. In the fifth embodiment of the present invention, a method will be described in which the mobile station apparatus 1 transmits a PH (first remaining power value) of the PUSCH and/or a PH (second remaining power value) of the PUCCH. When comparing a wireless communication system according to this modality with the wireless communication system according to the first modality, there is a difference in the transmit power control unit 2013 of the mobile station apparatus 1 and in the control unit of radio feature 1011 of the base station apparatus 4. However, since settings and functions of the other components are the same as in the first mode, a description of the same functions as in the first mode is omitted.
[000102] In Chapter 6 of the Non-Patent Document 3, simultaneous transmission of a PUSCH and a PUCCH in LTE-A is described. When the PUSCH and the PUCCH are transmitted simultaneously, if a transmit power value of the PUCCH transmitted by the mobile station apparatus 1 is unknown, the base station apparatus 3 cannot determine how many PRBs it can designate as a radio resource for transmission PUSCH to the mobile station apparatus 1 which simultaneously transmits the PUCCH and the PUSCH. Consequently, although the mobile station apparatus 1 needs to transmit the PH of the PUCCH to the base station apparatus 3, a calculation method and a method of transmitting the PH of the PUCCH have been undefined. Consequently, a calculation method and a transmission method of the PUCCH PH are provided in the fifth mode.
[000103] When the transmit power control unit 2013 of the mobile station apparatus 1 of the fifth mode is instructed to calculate a PH by means of the power safety margin control unit 2015, it calculates the PHs of the PUSCHs of all the uplink carrier components designated by the base station apparatus 3 on the basis of Formula (2), and transmits them to the base station apparatus 3 via the transmission unit 207. transmit power 2013 calculates PHs of the PUCCHs of all uplink carrier components designated by the base station apparatus 3, or of the uplink carrier component (it should be noted that the base station apparatus 3 can inform the apparatus of mobile station 1 of this uplink carrier component) for which a radio resource for transmitting PUCCH (radio resource for controlling transmission of information) has been designated by the apparatus. the base station 3 based on Formula (4), and transmits the PHs to the base station apparatus 3 via the transmission unit 207.
[000104] Formula 4:

[000105] When a PH of PUCCH is calculated by Formula (4), h(ncQi, nHARQ) and ΔF_PUCCH are calculated as a predetermined PUCCH format and the predetermined number of bits (for example, HARQ bit is 1 bit in a PUCCH format 1a, or channel quality information is 4 bits in a PUCCH format 2). Alternatively, when the PUCCH is transmitted on the uplink carrier component to which the PH of the PUCCH corresponds at a time when the PH of the PUCCH is transmitted, the PH of the PUCCH can be calculated by Formula (4) using the format and the number of PUCCH bits transmitted at the time and on the uplink carrier component. The radio resource control unit 1011 of the base station apparatus 3 of the fifth mode controls a transmit power value when the mobile station apparatus 1 simultaneously transmits the PUCCH and the PUSCH based on the PH of the PUCCH and the PH of the PUSCH .
[000106] As a result of this, the mobile station apparatus 1 can calculate the PH of the PUCCH corresponding to a certain uplink carrier component to transmit to the base station apparatus 3, and the base station apparatus 3 can control the number of PRBs designated for PUSCH transmission from the PH of the PUCCH and the PH of the PUSCH.
[000107] It should be noted that the PH calculation method can also be applied when the mobile station apparatus transmits each PH report corresponding to the uplink carrier component at different times. Furthermore, the calculation method can also be applied when the mobile station apparatus 1 transmits the PH corresponding to a uplink carrier component. Furthermore, the calculation method can also be applied when the mobile station apparatus 1 monitors a path loss and/or path loss change in one or more downlink carrier components. It should be noted that the calculation method can also be applied when the PH of PUCCH and PH of PUSCH are configured as different MAC CEs. Furthermore, the calculation method can also be applied when the PH of PUCCH and PH of PUSCH are set as the same MAC CE. Furthermore, the calculation method can also be applied when two or more of the conditions described above are combined with each other.(1) In order to achieve the objective described above, the present invention has adopted the following measures. That is, a wireless communication system of the present invention is the wireless communication system in which a base station apparatus and a mobile station apparatus perform wireless communication using a plurality of component carriers, and the wireless communication system is characterized in that the mobile station apparatus manages a power safety margin that is a difference between a maximum transmit power value determined for each uplink component carrier by the base station apparatus and a predetermined power value estimated for uplink transmission, monitors a downlink component carrier path loss reported by the base station apparatus among a plurality of downlink component carriers, and when a path loss value of any downlink component carrier. descent changes more than a predetermined value, the mobile station apparatus decides transmission to the device. base station son of the power safety margin for uplink transmission corresponding to all downlink component carriers established by the base station apparatus.
[000108] As described above, since the mobile station apparatus monitors the downlink component carrier path loss reported by the base station apparatus, it can reduce the number of downlink component carriers in which it changes of path losses are monitored, load of the mobile station apparatus by monitoring changes in path losses can be reduced, and timers can be managed in common across all downlink component carriers, thus resulting in easy management of timers. (2) Furthermore, a mobile station apparatus of the present invention is the mobile station apparatus in which a base station apparatus and a mobile station apparatus perform wireless communication using a plurality of component carriers, and the station apparatus mobile comprises: a power safety margin control unit that manages a power safety margin that is a difference. a range between a maximum transmit power value determined for each uplink component carrier by the base station apparatus and an estimated predetermined power value for uplink transmission; and a path loss measuring unit monitors a path loss of a downlink component carrier reported by the base station apparatus among the plurality of downlink component carriers, and the mobile station apparatus is characterized in that, when a path loss value of any downlink component carrier changes more than a predetermined value, the power safety margin control unit decides to transmit to the base station apparatus the power safety margin for transmission of uplink corresponding to all downlink component carriers established by the base station apparatus.
[000109] As described above, since the mobile station apparatus 1 monitors a downlink component carrier path loss reported by the base station apparatus among the plurality of downlink component carriers, it can reduce the number of downlink component carriers on which path loss changes are monitored, load of the mobile station apparatus in monitoring path loss changes can be reduced, and timers can be managed in common across all component link carriers (3) In addition, a mobile station apparatus of the present invention is characterized in that the mobile station apparatus is informed of any one of the plurality of downlink component carriers by the base station apparatus, and that the path loss measuring unit monitors a path loss of any carrier the one informed of the downlink component carriers.
[000110] As described above, since the mobile station apparatus monitors the path loss of any informed carrier of downlink component carriers, it can reduce the number of downlink component carriers in which losses changes path are monitored. Furthermore, when the downlink component carrier for which frequency band aggregation is performed is configured in contiguous frequency domains, path losses of the other downlink component carriers can be estimated from the path loss of the downlink component carrier. (4) Furthermore, a mobile station apparatus of the present invention is characterized in that the path loss measuring unit monitors path losses of all downlink component carriers designated by the base station apparatus.
[000111] As described above, since the mobile station apparatus monitors the path losses of all downlink component carriers designated by the base station apparatus, it becomes possible to efficiently and accurately control the PH when effects of path losses differ as in downlink component carriers widely spaced from each other in the frequency domain. (5) Furthermore, a mobile station apparatus of the present invention is characterized in that when a radio resource for uplink transmission is not assigned to an uplink component carrier at a time when the mobile station apparatus transmits the power safety margin, the power safety margin control unit calculates the safety margin of power, determining that a predetermined amount of radio resources is assigned to the uplink component carrier.
[000112] As described above, once the control unit PH calculates the power safety margin by determining that the predetermined amount of radio resources is assigned to the uplink component carrier when the radio resource for transmission of uplink is not assigned to the uplink component carrier at the time when the mobile station apparatus transmits the power safety margin, the mobile station apparatus can calculate the PH using the method similar to a case where the radio resource is designated. (6) Furthermore, a mobile station apparatus of the present invention is characterized in that when the mobile station apparatus transmits the power safety margin on an uplink component carrier it does not be an uplink component carrier to which the power safety margin corresponds at a time of transmitting the power safety margin, the control unit d and power safety margin calculates the power safety margin by determining that a predetermined amount of radio resources is assigned to the uplink component carrier.
[000113] As described above, since the control unit PH calculates the power safety margin by determining that the predetermined amount of radio resources is assigned to the uplink component carrier when the mobile station apparatus transmits the power safety margin on an uplink component carrier other than a uplink component carrier to which the power safety margin corresponds, PH interpretations between the mobile station apparatus and the apparatus can be avoided station apparatus are different from each other also when the mobile station apparatus fails to detect uplink grant transmitted by the base station apparatus. (7) Furthermore, a mobile station apparatus of the present invention is characterized in that the mobile station apparatus additionally manages a second power safety margin which is a difference between a transmit power value. s maximum established for each uplink component carrier by the base station apparatus and an estimated predetermined power value for transmitting uplink control information, the power safety margin control unit calculates the second safety margin of power, determining that a radio resource of a predetermined format is assigned to the uplink component carrier, and the predetermined number of bits are transmitted.
[000114] As described above, since the mobile station apparatus manages the second power safety margin which is the difference between the maximum transmit power value set for each uplink component carrier by the base station apparatus and the estimated predetermined power value for transmitting uplink control information, the mobile station apparatus can calculate a PH of a PUCCH corresponding to a certain uplink component carrier to transmit to the base station apparatus, and the base station apparatus can control the number of PRBs designated for PUSCH transmission from the PH of the PUCCH and a PH of a PUSCH.(8) Furthermore, a base station apparatus of the present invention is the base station apparatus in which a base station apparatus and a mobile station apparatus perform wireless communication using a plurality of component carriers, and the base station apparatus is provided that the base station apparatus establishes a downlink component carrier on which the mobile station apparatus described in (3) monitors a path loss, and which informs the mobile station apparatus about the downlink component carrier. established descent.
[000115] As described above, once the base station apparatus informs the mobile station apparatus about the established downlink component carrier, the mobile station apparatus can monitor the path loss of the downlink component carrier. informed descent.(9) Furthermore, a base station apparatus of the present invention is the base station apparatus in which the base station apparatus and a mobile station apparatus perform wireless communication using a plurality of component carriers, and the base station apparatus is characterized in that the base station apparatus sets a predetermined value to monitor a path loss value for each downlink component carrier, and which informs the mobile station apparatus described in (4) regarding each predetermined value established.
[000116] As described above, once the base station apparatus sets the predetermined value to monitor the path loss value for each downlink component carrier, it becomes possible to efficiently and accurately control the PH when effects of path losses differ as in downlink component carriers widely spaced from each other in the frequency domain.(10) Furthermore, a wireless communication method of the present invention is the wireless communication method of a wireless communication system in which a base station apparatus and a mobile station apparatus perform wireless communication using a plurality of component carriers, and the wireless communication method is characterized in that the mobile station apparatus manages a security margin of power which is a difference between a maximum transmit power value established for each uplink component carrier by the apparatus. that of base station and an estimated predetermined power value for uplink transmission, monitors a downlink component carrier path loss reported by the base station apparatus among a plurality of downlink component carriers, and that, when a path loss value of any downlink component carrier changes more than a predetermined value, the mobile station apparatus decides to transmit to the base station apparatus the power safety margin for uplink transmission corresponding to all downlink component carriers established by the base station apparatus.
[000117] As described above, since the mobile station apparatus monitors the downlink component carrier path loss reported by the base station apparatus among the plurality of downlink component carriers, it can reduce the number of downlink component carriers on which changes in path losses are monitored, load of the mobile station apparatus in monitoring changes in path losses can be reduced, and timers can be managed in common across all component link carriers. descending, thus resulting in easy management of the timers.(11) Furthermore, a control program of the present invention is the control program for a mobile station apparatus applied to a wireless communication system in which a base station apparatus and the mobile station apparatus perform wireless communication using a plurality of component carriers, and the driver program is c characterized in that it was made to be a computer-readable and computer-executable command, a series of processing including the processing of: managing in a power safety margin control unit a power safety margin which is a difference between a maximum transmit power value set for each uplink component carrier by the base station apparatus and an estimated predetermined power value for uplink transmit; monitoring in a path loss measuring unit a path loss of a downlink component carrier reported by the base station apparatus among the plurality of downlink component carriers; and deciding transmission to the base station apparatus of the power safety margin for uplink transmission corresponding to all downlink component carriers established by the base station apparatus when a path loss value of any uplink component carrier descent changes more than a predetermined value in the power safety margin control unit.
[000118] As described above, once the mobile station apparatus decides to transmit to the base station apparatus the power safety margin for uplink transmission corresponding to all downlink component carriers established by the base station when a path loss value of any downlink component carrier changes more than a predetermined value, it can reduce the number of downlink component carriers on which path loss changes are monitored, apparatus load of mobile station monitoring changes in path losses can be reduced, and timers can be managed in common across all downlink component carriers, thus resulting in easy timer management.
[000119] A program operating in the base station apparatus 3 and the mobile station apparatus 1 according to the present invention may be the program (program that makes a computer operate) that controls a CPU (Central Processing Unit), etc. . in order to achieve a function in the aforementioned embodiment according to the present invention. Additionally, information distributed on these devices is temporarily stored in RAM (Random Access Memory) during its processing period, subsequently stored in various ROMs, such as a Flash ROM (Read Only Memory) and an HDD (Hard Disk Drive) , and the information is read, corrected/written by the CPU if necessary.
[000120] It should be noted that a part of the mobile station apparatus 1 and the base station apparatus 3 in the above-mentioned first, second and third embodiments can be achieved with a computer. In that case, the computer can be achieved by recording a program to perform the control function described above on a computer-readable recording medium, and making the program recorded on this recording medium read a computer system to be executed. It should be noted that a "computer system" referred to in this document is defined to be the computer system incorporated into the mobile station apparatus 1 or the base station apparatus 3, and to include hardware such as an OS and a peripheral device.
[000121] Furthermore, a "computer readable recording media" means a portable media such as a floppy disk, a magnetic optical disk, a ROM and a CD-ROM, and a memory storage built into the computer system , just like a hard drive. Additionally, "computer readable recording media" may also include media that dynamically retains a program for a short time such as a communication wire used when the program is transmitted over a communication line, such as over a network such as the Internet and a telephone line, and media that hold a program for a certain time such as volatile memory within the computer system serving as a server or client when the program is held dynamically for a short time. Furthermore, the program described above can be the program to perform a part of the aforementioned function, and it can be the program in which the aforementioned function can be performed in combination with the program having already been recorded in the computer system.
[000122] Furthermore, some or all of the mobile station apparatus 1 and the base station apparatus 3 in the aforementioned modality can be achieved as an LSI, which typically is an integrated circuit. Each functional block of the mobile station apparatus 1 and the base station apparatus 3 can be chip-formed individually, or some or all of them can be integrated to be chip-formed. Furthermore, a technique to turn the functional blocks into an integrated circuit can be achieved not only like LSI, but like a dedicated circuit or a general purpose processor. Furthermore, when a technology to make the functional blocks in the integrated circuit as an alternative to LSI appears because of progress in a semiconductor technology, it is also possible to use an integrated circuit made by the technology.
[000123] As described above, although an embodiment of the present invention has been described in detail with reference to the drawings, a specific configuration is not limited to that indicated above, and various changes of a design, etc. can be made without departing from the scope of the present invention. Symbol Description 1: (1A, 1B, and 1C) MOBILE STATION APPARATUS 3: BASE STATION APPARATUS 101: TOP LAYER PROCESSING UNIT 103: CONTROL UNIT 105: RECEIVING UNIT 107: TRANSMISSION UNIT 201: UNIT HIGHER LAYER PROCESSING UNIT 203: CONTROL UNIT 205: RECEPTION UNIT 207: TRANSMISSION UNIT 209: PATH LOSS MEASUREMENT UNIT 1013: POWER SAFETY MARGIN ESTABLISHMENT UNIT 2015: SAFETY MARGIN CONTROL UNIT OF POWER

权利要求:
Claims (4)
[0001]
1. Radio communication method in which a mobile station apparatus (1) communicates with a base station apparatus (3) using one or more uplink component carriers and one or more downlink component carriers, characterized in by the fact that the mobile station apparatus (1) performs the steps of calculating a power safety margin value of a certain uplink component carrier, assuming that an uplink radio resource is assigned to a transmission of an uplink shared physical channel on the certain uplink component carrier, in a case that the uplink shared physical channel is not transmitted on the certain uplink component carrier, and in the case that the margin value power safety margin of certain uplink component carrier is to be transmitted, and transmit power safety margin value of certain uplink component carrier, and wherein the base station apparatus (3) performs the step of determining that the power safety margin value of a certain uplink component carrier received from the mobile station apparatus (1) is calculated, assuming a block of physical resource is designated for the transmission of the uplink shared physical channel on the certain uplink component carrier, in a case that a physical resource for the uplink shared physical channel is not assigned to the mobile station apparatus (1) for certain an uplink component carrier.
[0002]
2. Mobile station apparatus (1) adapted to communicate with a base station apparatus (3) using one or more uplink component carriers and one or more downlink component carriers, the mobile station apparatus (1 ) characterized in that it comprises: a transmit power control unit configured to calculate a power safety margin value of a certain uplink component carrier, assuming that an uplink radio resource is assigned to a transmission of an uplink shared physical channel on the certain uplink component carrier, in a case that the uplink shared physical channel is not transmitted on the certain uplink component carrier, and in the case that the value of the power safety margin of the certain uplink component carrier is to be transmitted, and a transmission unit configured to transmit the margin value of power security of a certain uplink component carrier.
[0003]
3. Mobile station apparatus (1) according to claim 2, characterized in that the transmit power control unit is configured to calculate the power safety margin value of a certain uplink component carrier , assuming that uplink physical control channel format 1a is designated for a transmission of an uplink physical control channel on the certain component carrier, in a case that the uplink physical control channel is not transmitted in the certain uplink component carrier, and in the case that the power safety margin heat of the certain uplink component carrier is to be transmitted.
[0004]
4. Mobile station apparatus (1) according to claim 3, characterized in that the uplink physical control channel format 1a is a format used in a case that a bit information is to be transmitted .

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同族专利:

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US9014031B2|2015-04-21|

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EP2541999B1|2019-04-17|

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TW201125402A|2011-07-16|

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CA2777892A1|2011-05-05|

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TWI495373B|2015-08-01|

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EP2496025A1|2012-09-05|

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AU2010312811A1|2012-05-10|

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EP2541999A3|2014-06-25|

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JP5020300B2|2012-09-05|

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WO2011052312A1|2011-05-05|

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CA2777892C|2020-04-28|

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CN102781088B|2016-02-24|

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AU2010312811B2|2014-11-06|

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BR112012010145A2|2016-04-12|

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ZA201202878B|2013-06-26|

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法律状态:
2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2020-01-14| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04W 52/04 , H04J 11/00 , H04W 92/10 Ipc: H04W 52/34 (2009.01), H04W 52/36 (2009.01), H04W 5 |

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2020-01-21| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2021-04-06| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2021-05-11| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 11/05/2021, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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JP2009247497A|JP5020300B2|2009-10-28|2009-10-28|Wireless communication system, mobile station apparatus, base station apparatus, wireless communication method, and mobile station apparatus control program|

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JP2009-247497|2009-10-28|

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PCT/JP2010/066326|WO2011052312A1|2009-10-28|2010-09-21|Wireless communication system, base station apparatus, mobile station apparatus, wireless communication method, mobile station apparatus control program, and integrated circuits of base station apparatus and mobile station apparatus|

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