wireless communication system, base station apparatus, mobile station apparatus, wireless communicat

专利摘要:
WIRELESS COMMUNICATION SYSTEM, BASE STATION APPLIANCE, MOBILE STATION APPLIANCE, WIRELESS COMMUNICATION METHOD AND INTEGRATED CIRCUIT. In a wireless communication system in which a base station apparatus (3) and a mobile station apparatus (1) communicate with each other, the base station apparatus (3) sets the number of spatial multiplexing (classification) sequences , which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH further defines orthogonal resources used by the mobile station apparatus (1) respectively to the same number of reference signals as the defined number of spatial multiplexing sequences that are transmitted along with the PUSCH, and transmitting downlink control information that includes information indicative of the defined number of spatial multiplexing sequences and information indicative of the orthogonal resources used for the reference signals, and the station apparatus mobile (1) receives the downlink control information, selects the orthogonal resources to apply respectively to the same number of reference signals as the number of spatial multiplexing sequences indicated by the information indicative of the number of spatial multiplexing sequences from the indicative information (...).
公开号:BR112012010035B1
申请号:R112012010035-1
申请日:2010-10-06
公开日:2021-05-04
发明作者:Shoichi Suzuki；Yosuke Akimoto
申请人:Sharp Kabushiki Kaisha；
IPC主号:

专利说明:

Field of Technique
[0001] The present invention relates to a wireless communication system, base station apparatus, mobile station apparatus, wireless communication method and integrated circuit. Background of the Technique
[0002] Conventionally, the 3rd Generation Partnership Project (3GPP) has studied the evolution (hereinafter referred to as "Long Term Evolution (LTE)" or "Developed Universal Terrestrial Radio Access (EUTRA)") of radio access scheme and cellular mobile communication radio networks; and radio access scheme and radio networks (hereinafter referred to as "Long Term-Advanced Evolution (LTE-A)" or "Terrestrial Radio Access" Advanced Developed Universal (A-EUTRA)") to update data communications faster using wider frequency bands than LTE.
[0003] In LTE, an Orthogonal Frequency Division Multiplexing (OFDM) scheme, i.e., multi-carrier transmission, is used as a wireless communication (downlink) communication scheme from a base station apparatus to a base station apparatus. mobile station. Additionally, a SC-FDMA (Single Carrier Frequency Division Multiple Access) scheme, i.e., single carrier transmission, is used as a wireless communication (uplink) communication scheme from the mobile station apparatus to the apparatus. of base station. More specifically, a modulated transmission signal is transformed into the frequency domain signal by DFT (Discrete Fourier Transform), and the signal is mapped to radio resources (frequency resources) allocated by the base station apparatus, then it is transformed in the time domain signal by IDFT (Inverse DFT) and is transmitted to the base station apparatus. IN LTE-A, SC-FDMA is also called DFT pre-encoded OFDM.
[0004] In LTE, in the downlink the Synchronization Channel (SCH), Physical Broadcast Channel (PBCH), Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Channel are assigned Physical Multiple Broadcast Indicator (PMCH), Physical Control Format Indicator Channel (PCFICH), and the Physical Hybrid Auto-Repeat Request Indicator Channel (PHICH). Additionally, in the uplink, Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH) and Physical Uplink Random Access Channel (PRACH) are assigned.
[0005] In LTE, a reference signal (Demodulation Reference Signal; DMRS) used in the demodulation of PUSCH and PUCCH is time multiplexed with PUSCH or PUCCH and transmitted. DMRS is subjected to code spreading using CAZAC (Zero Autocorrelation and Constant Amplitude) sequences on split radio resources with assumed SC-FDMA. CAZAC sequences are sequences that have constant amplitude in the time domain and frequency domain and that have excellent autocorrelation characteristics. The sequences have constant amplitude in the time domain, and are, therefore, able to control the PAPR (Ratio between Peak and Average Power) at low levels. Additionally, in LTE DMRS, by providing SC-FDMA symbols with cyclic shift in the time domain, it is possible to perform CDM (Code Division Multiplexing) in spread DMRS using the same CAZAC sequence. However, when the sequence lengths of CAZAC sequences are different from each other, it is not possible to perform CDM. The method of generating DMRS in LTE is described in Non-Patent Document 1, section 5.
[0006] Non-Patent Document 2 also proposes the application of orthogonal code (for example, Walsh-Hadamard Code [1,1] and [1,1]) to DMRSs that are transmitted in different SC-FDMA symbols, in addition to the above mentioned CDM by cyclic shifting, in order to allow spatial multiplexing of multiple uplink users (or also called Multiple Input Multiple Uplink Users Multiple; UL MU-MIMO) between mobile station apparatus assigned different resources of radio in LTE. Hereinafter, the orthogonal code is called orthogonal coverage. Prior Art Document Non-Patent Document
[0007] Non-Patent Document 1: "3GPP TS36.211 v.8.8.0 (092009)"
[0008] Non-Patent Document 2: "Uplink reference signal structure from MU-MIMO viewpoint", 3GPP TSG RAN WG1 Meeting #58bis, R1-093917, October 12-16, 2009. Description of the Invention Problems to be Solved by the Invention
[0009] However, in conventional techniques, the base station apparatus notifies the mobile station apparatus of the length of the cyclic shift in the DMRS in the time domain with the use of the PDCCH, additional control information is needed to further notify the orthogonal coverage to apply to DMRS, and it has been the problem that PDCCH overhead increases.
[00010] The present invention was made in view of the mentioned relationship, and it is an object of the invention to provide a wireless communication system, base station apparatus, mobile station apparatus, wireless communication method and integrated circuit to enable the length of the cyclic shift in the DMRS in the time domain and orthogonal coverage that the base station apparatus allocates to the mobile station apparatus is flexibly notified with the same PDCCH overhead as conventional maintained overhead. Means to Solve the Problem (1) To achieve the above mentioned objective, the invention took measures as described below. In other words, a wireless communication system of the invention is a wireless communication system in which a base station apparatus and a mobile station apparatus communicate with each other, and is characterized in that the base station apparatus defines the number of spatial multiplexing (classification) sequences of data, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH, further defines orthogonal resources used by the mobile station apparatus respectively to the same number of reference signals as the defined number of spatial multiplexing sequences that are transmitted along with the PUSCH, and transmit downlink control information including information indicative of the defined number of spatial multiplexing sequences and information indicative of the defined orthogonal resources used for the signals of reference, and the mobile station apparatus receives the link control information from descending, selects orthogonal resources to respectively apply the same number of reference signals as the number of spatial multiplexing sequences indicated by the information indicative of the number of spatial multiplexing sequences of the information indicative of the orthogonal resources, and applies the selected orthogonal resources to generate the reference signals, and transmits the generated reference signals to the base station apparatus. (2) Additionally, in the wireless communication system of the invention, it is a feature that the orthogonal resources are composed of a combination of a length of a cyclic shift in the time domain reference signals, and an orthogonal code sequence (coverage orthogonal) applied to reference signals that are transmitted twice or more in a plurality of time symbols. (3) Further, in the wireless communication system of the invention, it is a feature that the number of bits used in the information indicative of the orthogonal resources is a value determined in advance. (4) Even more further, in the wireless communication system of the invention, it is a feature that orthogonal resources associated with a code point of information indicative of the orthogonal resources vary with spatial data multiplexing sequences used by the mobile station apparatus in transmission of PUSCH. (5) Furthermore, in the wireless communication system of the invention, it is a feature that a first code point of information indicative of the orthogonal resources indicates that the same orthogonal code sequence (orthogonal coverage) is applied to all of the same number of reference signals as the defined number of spatial multiplexing sequences, and that a second code point of information indicative of the orthogonal resources indicates that the plurality of different orthogonal code sequences is applied to the same number of reference signals as the defined number of spatial multiplexing sequences. (6) Additionally, a base station apparatus of the invention is a base station apparatus that communicates with a mobile station apparatus, and is characterized by defining the number of spatial multiplexing (classification) data sequences, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH, further setting orthogonal resources used by the mobile station apparatus respectively to the same number of reference signals as the defined number of spatial multiplexing sequences that are transmitted along with the PUSCH, and transmitting downlink control information including information indicative of the defined number of spatial multiplexing sequences and information indicative of the defined orthogonal resources used for the reference signals. (7) Further, a mobile station apparatus of the invention is a mobile station apparatus that communicates with a base station apparatus, and is characterized by receiving downlink control information transmitted from the base station apparatus, including information indicative of the number of spatial multiplexing (classification) sequences of data, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH, and information indicative of orthogonal resources respectively used for the same number of signals. reference as the number of spatial multiplexing sequences of the PUSCH that are transmitted along with the PUSCH, selecting orthogonal resources to respectively apply to the same number of reference signals as the number of spatial multiplexing sequences indicated by the information indicative of the number of multiplexing sequences spatial information indicative of orthogonal resources, and apply the selected orthogonal resources for generating the reference signals, and transmitting the generated reference signals to the base station apparatus. (8) Additionally, a wireless communication method of the invention is a wireless communication method used in a base station apparatus that communicates with a mobile station apparatus, and is characterized by having means for defining the number of sequences of spatial multiplexing (classification) of data, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH, means for setting orthogonal resources used by the mobile station apparatus respectively to the same number of reference signals as the defined number of spatial multiplexing sequences that are transmitted along with the PUSCH, and means for transmitting downlink control information including information indicative of the defined number of spatial multiplexing sequences and information indicative of the defined orthogonal resources used for the reference signals . (9) Further, a wireless communication method of the invention is a wireless communication method used in a mobile station apparatus that communicates with a base station apparatus, and is characterized by having means for receiving control information. downlink, transmitted from the base station apparatus, including information indicative of the number of spatial multiplexing (classification) sequences of data, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH, and information indicative of orthogonal resources respectively used for the same number of reference signals as the number of PUSCH spatial multiplexing sequences that are transmitted along with the PUSCH, means for selecting orthogonal resources to respectively apply to the same number of reference signals as the number of spatial multiplexing sequences indicated by information indicative of the number of multiplex sequences spatial action of the information indicative of the orthogonal resources, and means for applying the selected orthogonal resources to generate the reference signals, and transmitting the generated reference signals to the base station apparatus. (10) Additionally, an integrated circuit of the invention is an integrated circuit used in a base station apparatus that communicates with a mobile station apparatus, and is characterized by producing a series of chip forms to be executable where the series of means includes means for defining the number of spatial multiplexing (classification) sequences of data, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH, means for defining orthogonal resources used by the mobile station apparatus respectively for the same number of reference signals as the defined number of spatial multiplexing sequences that are transmitted along with the PUSCH, and means for transmitting downlink control information including information indicative of the defined number of spatial multiplexing sequences and indicative information of the defined orthogonal features used for the reference signs. (11) Further, an integrated circuit of the invention is an integrated circuit used in a mobile station apparatus that communicates with a base station apparatus, and is characterized by producing a series of chip forms to be executable where the series of means includes means for receiving downlink control information transmitted from the base station apparatus, including information indicative of the number of spatial multiplexing (classification) sequences of data, which is the number being used by the mobile station apparatus when the mobile station transmits a PUSCH,, and information indicative of orthogonal resources respectively used for the same number of reference signals as the number of spatial multiplexing sequences of the PUSCH that are transmitted along with the PUSCH, means for selecting orthogonal resources to respectively apply to the same number of reference signals as the number of spatial multiplexing sequences indicated by the information indicative of the number of spatial multiplexing sequences of the information indicative of the orthogonal resources, and means for applying the selected orthogonal resources to generate the reference signals, and transmitting the generated reference signals to the base station apparatus. Advantageous Effect of the Invention
[00011] According to the invention, it is possible to notify the length of the cyclic shift in the DMRS in the time domain and orthogonal coverage that the base station apparatus assigns to the mobile station apparatus is flexibly notified with the same overhead of the PDCCH as conventional overhead maintained. Brief Description of Drawings
[00012] Figure 1 is a conceptual diagram of a wireless communication system according to this Modality; Fig. 2 is a schematic diagram showing an example of a configuration of an uplink radio frame in accordance with that Modality; Figure 3 is a schematic diagram showing an example of a DMRS configuration according to this Modality; Fig. 4 is a schematic block diagram illustrating a configuration of a base station apparatus 3 in accordance with that Embodiment; Fig. 5A is a diagram showing an example of a correspondence table of the number of spatial multiplexing sequences, orthogonal features and code point according to this Modality; Fig. 5B is another diagram showing an example of the correspondence table of the number of spatial multiplexing sequences, orthogonal features and code point according to this Modality; Fig. 5C is yet another diagram showing an example of the correspondence table of the number of spatial multiplexing sequences, orthogonal features and code point according to this Modality; Figure 5D is further another diagram showing an example of the correspondence table of the number of spatial multiplexing sequences, orthogonal features and code point according to this Modality; Fig. 6 is a schematic block diagram illustrating a configuration of a base station apparatus 1 in accordance with that Embodiment; Fig. 7 is a flowchart showing an example of the operation of base station apparatus 3 in accordance with that Embodiment; and Fig. 8 is a flowchart showing an example of the operation of mobile station apparatus 1 in accordance with that Modality. Best Way to Carry Out the Invention
[00013] An embodiment of the invention will be described below with reference to the drawings. Figure 1 is a conceptual diagram of a wireless communication system according to this Modality. In figure 1, the wireless communication system is provided with mobile station apparatus 1A-1C and a base station apparatus 3. The mobile station apparatus 1A-1C and the base station apparatus 3 carry out communications using aggregation. frequency band, described later.
[00014] Figure 1 shows that the Synchronization Channel (SCH), the Downlink Reference Signal (DLRS), the Physical Broadcast Channel (PBCH), the Physical Downlink Control Channel (PDCCH), the Channel Physical Downlink Shared Channel (PDSCH), Physical Multiple Broadcast Channel (PMCH), Physical Control Format Indicator Channel (PCFICH), and Physical Hybrid ARQ Indicator Channel (PHICH) are assigned in wireless communication (downlink ) from base station apparatus 3 to mobile station apparatus 1A to 1C.
[00015] Additionally, Figure 1 shows that the Uplink Reference Signal (ULRS), the Physical Uplink Control Channel (PUCCH), the Physical Uplink Shared Channel (PUSCH) and the Random Access Channel of Physical Uplink (PRACH) are assigned in wireless communication (uplink) from mobile station apparatus 1A to 1C to base station apparatus 3. The Uplink Reference Signal includes a DMRS (Demodulation Reference Signal) which is time multiplexed with the PUSCH or PUCCH to be transmitted and is used for channel compensation of the PUSCH and PUCCH, and an SRS (Sound Reference Signal) used for the base station apparatus 3 to estimate an uplink channel state . Hereinafter, mobile station apparatus 1A to 1C are referred to as a mobile station apparatus 1. With respect to an uplink radio frame
[00016] Figure 2 is a schematic diagram showing an example of a configuration of an uplink radio frame according to this Modality. In Figure 2, the horizontal geometric axis represents the time domain, and the vertical geometric axis represents the frequency domain. As shown in Fig. 2, an uplink radio frame is composed of a plurality of uplink Physical Resource Block (PRB) pairs (e.g., region confined by the dotted lines in Fig. 2). This pair of uplink Physical Resource Blocks is a unit for radio resource allocation and the like, and is composed of a frequency band (PRB bandwidth; 180 kHz) and time band (two slots=one subframe ; 1ms) with widths determined in advance. A single pair of uplink Physical Resource Blocks is composed of two uplink Physical Resource Blocks (PRB bandwidth x slots) consecutive in the time domain. A single uplink Physical Resource Block (unit confined by the bold line in Figure 2) is composed of 12 subcarriers (15 kHz) in the frequency domain and 7 SC-FDMA symbols (71 µs) in the time domain.
[00017] In the time domain, there is a slot (0.5 ms) composed of 7 SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, subframe (1 ms) composed of two slots and radio frame (10 ms) composed of 10 subframes. In the frequency domain, a plurality of uplink Physical Resource Blocks are arranged corresponding to the bandwidth of an uplink component carrier. Furthermore, a unit composed of a single subcarrier and a single SC-FDMA symbol is called an uplink resource element.
[00018] The channels assigned to the uplink radio frame will be described below. In each subframe on the uplink, for example, the PUCCH, PUSCH and DMRS are assigned.
[00019] The PUCCH will be described first. The PUCCH is assigned to the uplink Physical Resource Block pairs (regions hatched by left diagonal lines) at both ends of the uplink component carrier bandwidth. IN THE PUCCH there are arranged Channel Quality Information signals indicative of downlink channel quality, Scheduling Request (SR) indicative of a request for uplink radio resource allocation, ACK/NACK for the PDSCH, and the like, such as Uplink Control Information (UCI) that is, information used in communications control.
[00020] The PUSCH will be described next. The PUSCH is assigned to the uplink Physical Resource Block pairs (regions that are not hatched) except the uplink Physical Resource Blocks in which the PUCCH is arranged. On the PUSCH are arranged signals of Uplink Control Information, and data information (Transport Block), that is, information except Uplink Control Information. The PUSCH radio resources are allocated using Downlink Control Information (DCI) transmitted in the PDCCH, and the PUSCH is arranged in an uplink subframe a predetermined time after the subframe in which the PDCCH including the PDCCH information Downlink Control is received.
[00021] Downlink Control Information indicative of PUSCH radio resource allocation is also called an Uplink grant. Additionally, the Uplink grant includes information (second control information) indicative of the number of spatial multiplexing sequences (classification, or also called the number of layers) in the application, to the PUSCH, spatial multiplexing of multiple uplink users (or also called Multiple Output Multiple Uplink Multiple User Input; UL MU-MIMO) and/or single uplink single user spatial multiplexing (or also called Multiple Output Multiple Single User Uplink Input; UL SU-MIMO), information (first control information) indicative of orthogonal resources used in time multiplexed DMRS with PUSCH, etc. In addition, orthogonal features represent a combination of cyclic shift and orthogonal coverage for application to DMRS.
[00022] UL SU-MIMO is for techniques in which a single mobile station apparatus 1 transmits data of different sequences (hereinafter referred to as layers) at the same time with the same frequency of a plurality of transmit antennas, the base station apparatus 3 demodulates and divides the respective data streams using the difference between transmit/receive channels in reception, and faster communications are thereby updated. In the meantime, UL MU-MIMO is of techniques in which a plurality of mobile station apparatus 1 transmits data at the same time with the same frequency, base station apparatus 3 splits one or more streams of transmitted data from each station apparatus mobile 1 in reception, and spectrum efficiency is thereby improved. In SU-MIMO and MU-MIMO, it is necessary for the receiver to know the channel information associated with each of the transmit and receive antennas. Therefore, in SU-MIMO and MU-MIMO, orthogonal DMRSs of at least the same number of sequences are transmitted as the number (hereafter referred to as a "classification") of sequences to spatially multiplex. Hereinafter, the reference signal sequence is called a gate.
[00023] The uplink reference signal is time multiplexed with PUCCH and PUSCH. Figure 3 is a schematic diagram showing an example of a DMRS configuration according to this Modality. In Figure 3, the horizontal geometric axis represents the time domain, and the vertical geometric axis represents the frequency domain. Figure 3 shows the DMRS generation and mapping in frequency domain and time domain with attention directed to a port. As shown in Fig. 3, the DMRS is arranged on the 4th and 11th SC-FDMA symbols in the time domain, although it is arranged on the same frequency as the PUSCH in the frequency domain.
[00024] Additionally, the DMRS is orthogonal resources assigned for each port transmitted from the same mobile station apparatus 1 and/or for each port transmitted from different mobile station apparatus 1. As shown in figure 3, the DMRSs are orthogonalized by rotating the phase for each subcarrier with respect to the DMRS CAZAC sequence, thus providing the SC-FDMA DFT processed symbol with the cyclic shift in the time domain, and by multiplying the CAZAC sequence to arrange the 4th DMRS and 11th DMRS by the orthogonal coverage. Furthermore, since time-domain cyclic shifting provides complete orthogonalization only in the case of the same CAZAC sequence, when DMRSs generated using different CAZAC sequences are multiplexed, complete orthogonal features are ensured only by the orthogonal coverage. regarding a configuration of the base station apparatus 3
[00025] Figure 4 is a schematic block diagram illustrating a configuration of the base station apparatus 3 according to this Modality. As shown in the figure, the base station apparatus 3 includes upper layer processing parts 301, control parts 303, receiving parts 305, transmitting parts 307, channel measuring parts 309 and transmitting/receiving antennas and is composed of this. Additionally, the upper layer processing part 301 includes a radio resource control part 3011, orthogonal resource definition part/spatial multiplexing sequence number 3013 and storage part 3015 and is composed thereof. In the meantime, the receiving part 305 includes a decoding part 3051, demodulation part 3053, demultiplexing part 3055 and radio receiving part 3057 and is composed of these. In addition, the transmission part 307 includes a coding part 3071, modulation part 3073, multiplexing part 3075, radio transmission part 3077, and downlink reference signal generation part 3079 and is composed thereof.
[00026] The upper layer processing part 301 sends data information for each downlink component carrier to the transmission part 307. Additionally, the upper layer processing part 301 performs Data Convergence Protocol layer processing (PDCP), the Radio Link Control (RLC) layer, and the Radio Resource Control (RRC) layer.
[00027] The radio resource control part 3011 provided in the upper layer processing part 301 generates information to arrange on each channel of each downlink component carrier or acquires such information from a higher node to send to the part. transmission 307. Additionally, the radio resource control part 3011 allocates radio resources to the mobile station apparatus 1 to arrange the PUSCH (data information) among the uplink radio resources. More additionally, the radio resource control part 3011 allocates radio resources to arrange the PDSCH (data information) for the mobile station apparatus 1 among the downlink radio resources. Still more additionally, the radio resource control part 3011 generates the Downlink Control Information (e.g., Uplink grant, etc.) indicative of allocation of the radio resources, and transmits the information to the station apparatus mobile 1 via the transmission part 307. Furthermore, in the generation of the Uplink grant, the radio resource control part 3011 includes, in the Uplink grant, information (second control information) indicative of the number of sequences of spatial multiplexing and the information (first control information) indicative of orthogonal resources used in the time multiplexed DMRS with the PUSCH inserted of the orthogonal resource definition/spatial multiplexing sequence number portion 3013.
[00028] In the meantime, the radio resource control part 3011 generates the control information to perform control of the receiving part 305 and the transmitting part 307 to send to the control part 303, based on the Control Information of Uplink (ACK/NACK, Channel Quality Information and Scheduling Request) notified in the PUCCH of the mobile station apparatus 1, temporary storage status notified of the mobile station apparatus 1, and various types of setting information of each mobile station apparatus mobile station 1 defined by radio resource control part 3011.
[00029] The orthogonal resource definition/spatial multiplexing sequence number part 3013 defines the number of spatial data multiplexing sequences used by the mobile station apparatus 1 in transmitting the PUSCH of channel input estimation values of the part. channel estimation 309, and further defines, for each port, orthogonal resources used by the mobile station apparatus 1 for the DMRS in order to transmit along with the PUSCH. In addition, the orthogonal resource definition/spatial multiplexing sequence number part 3013 selects a combination of the cyclic offset and the orthogonal coverage of orthogonal resources used in the DMRS from combinations from a table stored in the storage part 3015. Additionally, the part orthogonal resource definition/spatial multiplexing sequence number 3013 generates information (second control information) indicative of the number of spatial multiplexing sequences defined in mobile station apparatus 1 and information (first control information) indicative of orthogonal resources used in the time multiplexed DMRS with the PUSCH to output to the radio resource control part 3011.
[00030] The storage part 3015 stores, in table form, correspondence between the number (classification) of spatial multiplexing sequences and a code point (or, called a code word or bit sequence) of information indicative of resources orthogonal associated with orthogonal resources used in the DMRS assigned to each port. Figure 5 contains diagrams that show an example of the correspondence table of the number of spatial multiplexing sequences, orthogonal features and code point according to this Modality. Furthermore, the length of the cyclic shift in the time domain is described as an amount of phase rotation for each subcarrier to multiply in the frequency domain.
[00031] Figure 5A is a table showing combinations of orthogonal resources used in DMRS that can be defined by the orthogonal resource definition/spatial multiplexing sequence number part 3013 in the case where the number of spatial multiplexing sequences is "1 ", and the code points associated with the combinations. For example, when the orthogonal resource definition/spatial multiplexing sequence number part 3013 sets the number of spatial multiplexing sequences to "1", the cyclic shift to "0" and the orthogonal coverage to [1,1] to the mobile station apparatus 1, the orthogonal resource definition/spatial multiplexing sequence number part 3013 generates "000" as a codeword to arrange in the information indicative of orthogonal resources.
[00032] Fig. 5B is a table showing combinations of orthogonal resources used in DMRS that can be defined by the orthogonal resource definition/spatial multiplexing sequence number part 3013 in the case where the number of spatial multiplexing sequences is "2 ", and the code points associated with the combinations. For example, when the orthogonal resource definition/spatial multiplexing sequence number part 3013 sets the number of spatial multiplexing sequences to "2", the cyclic shift of gate 1 to "0", the orthogonal coverage of gate 1 to [1,1], the cyclic shift of gate 2 in "π", and the orthogonal coverage of gate 2 in [1,1] for mobile station apparatus 1, the orthogonal resource definition/sequence number part of Spatial multiplexing 3013 generates "000" as a codeword to arrange in information indicative of orthogonal features.
[00033] Figure 5C is a table showing combinations of orthogonal resources used in DMRS that can be defined by the orthogonal resource definition/spatial multiplexing sequence number part 3013 in the case where the number of spatial multiplexing sequences is "3 ", and the code points associated with the combinations. For example, when the orthogonal resource definition/spatial multiplexing sequence number part 3013 sets the number of spatial multiplexing sequences to "3", the cyclic shift of gate 1 to "0", the orthogonal coverage of gate 1 to [1,1], the cyclic shift of gate 2 into "π/2", the orthogonal cover of gate 2 into [1, -1], the cyclic shift of gate 3 into "π", and the orthogonal cover of gate 3 in [1, 1] for the mobile station apparatus 1, the orthogonal resource definition/spatial multiplexing sequence number part 3013 generates "000" as a codeword to arrange in the information indicative of orthogonal resources.
[00034] Figure 5D is a table showing combinations of orthogonal features used in DMRS that can be defined by the orthogonal feature definition/spatial multiplexing sequence number part 3013 in the case where the number of spatial multiplexing sequences is "4 ", and the code points associated with the combinations. For example, when the orthogonal resource definition/spatial multiplexing sequence number part 3013 sets the number of spatial multiplexing sequences to "4", the cyclic shift of gate 1 to "0", the orthogonal coverage of gate 1 to [1,1], the cyclic shift of gate 2 into "π/2", the orthogonal coverage of gate 2 into [1, 1], the cyclic shift of gate 3 into "π", the orthogonal coverage of gate 3 into [1, 1], the cyclic shift of gate 4 in "3π/2", and the orthogonal coverage of gate 4 in [1, 1] for the mobile station apparatus 1, the orthogonal resource definition part/number of spatial multiplexing sequence 3013 generates "000" as a codeword to arrange in information indicative of orthogonal features.
[00035] In other words, the orthogonal resource definition/spatial multiplexing sequence number part 3013 selects a code point to arrange in the information indicative of orthogonal resources of combinations of the classification and orthogonal resources defined in the mobile station apparatus 1. Furthermore, as described in Figure 5, even when the information indicative of the orthogonal resources is the same code point, the code point interpretation is different, corresponding to the number of spatial multiplexing sequences.
[00036] The control part 303 generates a control signal to control the receiving part 305 and the transmitting part 307, based on the control information of the upper layer processing part 301. The control part 303 outputs the signal of control generated for the receiving part 305 and the transmitting part 307 to control the receiving part 305 and the transmitting part 307.
[00037] According to the control signal input from the control part 303, the receiving part 305 demultiplexes, demodulates and decodes the receive signal received from the mobile station apparatus 1 through the transmit/receive antenna, and output the information decoded to the upper layer processing part 301. The radio receiving part 3057 converts (downconverts) each uplink signal received through the transmit/receive antenna into a signal of an intermediate frequency, removes components of frequency, controls the amplification level so that the signal level is properly maintained, performs quadrature demodulation based on the in-phase component and quadrature component of the received signal, and converts the quadrature-demodulated analog signal to a digital signal. The radio receiving part 3057 removes a portion corresponding to a guard interval (GI) from the converted digital signal. The radio receiving part 3057 performs Fast Fourier Transform (FFT) on the signal from which the guard interval is removed, and extracts the signal in the frequency domain to output to the demultiplexing part 3055.
[00038] The demultiplexing part 3055 demultiplexes the signal input from the radio receiving part 3057 into signals from PUCCH, PUSCH, Uplink Reference Signals (DMRS, SRS) and the like. Furthermore, such demultiplexing is performed based on the allocation information of radio resources included in the Uplink grant which is determined in advance by the base station apparatus 3 and notified to each mobile station apparatus 1. Additionally, the demultiplexing part 3055 outputs the demultiplexed PUSCH and Uplink Reference Signals (DMRS, SRS) to the channel measurement part 309. Further, the demultiplexing part 3055 performs channel compensation of the PUCCH and/or PUSCH of the estimation value of the input of uplink channel of the channel measurement part 309.
[00039] Furthermore, when UL SU-MIMO and/or UL MU-MIMO is applied to the PUSCH and the data is spatially multiplexed by two or more ports at the same time with the same frequency, the demultiplexing part 3055 divides the time and frequency positions at which data from respective ports is spatially multiplexed, and further divides data from respective ports.
[00040] The demodulation part 3053 performs Inverse Discrete Fourier Transform (IDFT) on the PUSCH, acquires modulation symbols, and with respect to the PUCCH and PUSCH modulation symbols, demodulates the receive signal using a modulation scheme Binary Phase Shift Switching (BPSK), Quadrature Phase Shift Switching (QPSK), 16 Quadrature Amplitude Modulation (16QAM), 64 Quadrature Amplitude Modulation (64QAM) or similar that is determined in advance or the base station apparatus 3 notifies each mobile station apparatus 1 in advance in the Uplink grant.
[00041] The decoding part 3051 decodes coded bits of the PUCCH and demodulated PUSCH with a coding rate that is determined in advance or the base station apparatus 3 notifies the mobile station apparatus 1 in advance in the Uplink grant of a scheme determined in advance, and outputs the decoded data information and Uplink Control Information to the upper layer processing part 301.
[00042] The channel measurement part 309 estimates the channel state of the PUSCH and Uplink Reference Signals (DMRS, SRS) inserted from the demultiplexing part 3055, and outputs the estimated channel estimation value to the demultiplexing part 3055 and to the upper layer processing part 301.
[00043] The transmission part 307 generates a Downlink Reference Signal in accordance with the control signal input of the control part 303, encodes and modulates the data information and the Downlink Control Information entered from the upper layer processing 301, and multiplex the PDCCH, PDSCH and Downlink reference signal to transmit to the mobile station apparatus 1 via the transmit/receive antenna.
[00044] Encoding part 3071 performs encoding such as turbocoding, convolutional encoding, block encoding and the like on the Downlink Control Information and data information of each downlink component carrier inserted from the upper layer processing part 301. The modulation part 3073 modulates encoded bits inserted from the encoding part 3071 with the modulation scheme of QPSK, 16QAM, 64QAM or similar. The downlink reference signal generating part 3079 generates, as a Downlink Reference Signal, a sequence that the mobile station apparatus 1 knows and which is obtained by a rule determined in advance on the basis of a cellular identifier ( Cell ID) to identify base station handset 3 or similar. The multiplexing part 3075 multiplexes each modulated channel and the generated Downlink Reference Signal.
[00045] The radio transmission part 3077 performs Fast Inverse Fourier Transform (IFFT) on the multiplexed modulation symbol, performs OFDM scheme modulation, adds a guard interval to the OFDM modulated symbol, generates a digital band signal of base, converts the baseband digital signal to an analog signal, generates a phase and quadrature component of the intermediate frequency of the analog signal, removes excess frequency components over the intermediate frequency band, converts (mode converts ascending) the intermediate frequency signal into a high frequency signal, removes excess frequency components, amplifies the power, and outputs the signal to the transmit/receive antenna for transmission.
[00046] Regarding a configuration of mobile station apparatus 1
[00047] Figure 6 is a schematic block diagram illustrating a configuration of mobile station apparatus 1 according to this Modality. As shown in the figure, the mobile station apparatus 1 includes upper layer processing parts 101, control parts 103, receiving parts 105, transmitting parts 107 and transmitting/receiving antennas and is composed of this. Additionally, the upper layer processing part 101 includes a radio resource control part 1011, an orthogonal resource identification/spatial multiplexing sequence number part 1013 and the storage part 1015 and is composed thereof. In the meantime, the receiving part 105 includes a decoding part 1051, demodulation part 1053, demultiplexing part 1055 and radio receiving part 1057 and is composed of these. In addition, the transmission part 107 includes the coding part 1071, the modulation part 1073, the multiplexing part 1075, the radio transmission part 1077 and the uplink reference signal generating part 1079 and is composed of this.
[00048] The upper layer processing part 101 outputs uplink data information generated by user operation or similar to the transmission part 107. Additionally, the upper layer processing part 101 performs Convergence Protocol layer processing of Packet Data, the Radio Link Control layer and the Radio Resource Control layer.
[00049] The radio resource control part 1011 provided in the upper layer processing part 101 manages various types of apparatus setting information 1. Additionally, the radio resource control part 1011 generates information to arrange on each channel. on the uplink to send to the transmitting part 107. The radio resource control part 1011 generates control information to control the receiving part 105 and the transmitting part 107 to send to the control part 103, based on the Downlink Control information (e.g., Uplink grant, etc.) notified in the PDCCH of the base station apparatus 3, and various types of definition information of the managed apparatus 1 in the radio resource control part 1011.
[00050] The orthogonal resource identification/spatial multiplexing sequence number part provided in the upper layer processing part 101 identifies the number of spatial multiplexing sequences of information indicative of the number of spatial multiplexing sequences included in the Uplink grant . Additionally, the orthogonal resource identification/spatial multiplexing sequence number part 1013 refers to the storage part 1015, and identifies orthogonal resources used in the DMRS, based on information indicative of the number of spatial multiplexing sequences and information indicative of the orthogonal features used in the DMRS included in the Uplink grant. Further, the orthogonal resource identification/spatial multiplexing sequence number part 1013 generates control information for controlling the transmission part 107 so as to transmit the PUSCH as the number of identified spatial multiplexing sequences, and arrange the DMRS to be time multiplexed with the PUSCH on the identified orthogonal resources, and output the control information to the control part 103.
[00051] The storage part 1015 provided in the upper layer processing part 101 stores the same correspondence table as the correspondence table of the number of spatial multiplexing sequences, orthogonal features and the code point stored in the storage part 3015 of the base station apparatus 3. For example, when the information indicative of the number of spatial multiplexing sequences indicates "1", and the codeword of the information indicative of orthogonal resources used in the DMRS is "000", of the correspondence table in Fig. 5A , it is possible to identify that the cyclical displacement of orthogonal resources used in the DMRS is "0", and that the orthogonal coverage is [1,1].
[00052] Additionally, when the information indicative of the number of spatial multiplexing sequences indicates "2", and the codeword of the information indicative of orthogonal resources used in the DMRS is "000", of the correspondence table in Figure 5B, it is possible to identify that the cyclical offset of orthogonal resources used in the port 1 DMRS is "0", the orthogonal coverage is [1,1], the cyclical offset of orthogonal resources used in the port 2 DMRS is "π", and that the orthogonal coverage is [1,1].
[00053] In addition, when the spatial multiplexing sequence number information callsign indicates "3", and an orthogonal resource information callsign code word used in the DMRS is "000", from the correspondence table in the Figure 5C, you can see that the cyclical offset of orthogonal resources used in the port 1 DMRS is "0", the orthogonal coverage is [1,1], the cyclical offset of orthogonal resources used in the port 2 DMRS is "π/ 2", the orthogonal coverage is [1,-1], the cyclical offset of orthogonal features used in port 3 DMRS is "π", and the orthogonal coverage is [1,1].
[00054] Further still, when the spatial multiplexing sequence number information callsign indicates "4, and the orthogonal resource information callsign code word used in the DMRS is "000", from the correspondence table in Figure 5D, it is possible to identify that the cyclical offset of orthogonal resources used in the port 1 DMRS is "0", the orthogonal coverage is [1,1], the cyclical offset of orthogonal resources used in the port 2 DMRS is "π /2", the orthogonal coverage is [1,-1], the cyclical offset of orthogonal features used in port 3 DMRS is "π", the orthogonal coverage is [1,1], the cyclical offset of orthogonal features used in the Port 4 DMRS is "3π/2", and the orthogonal coverage is [1,1].
[00055] The control part 103 generates a control signal to control the receiving part 105 and the transmitting part 107, based on the control information of the upper layer processing part 101. The control part 103 outputs the signal of control generated for the receiving part 105 and the transmitting part 107 to control the receiving part 105 and the transmitting part 107.
[00056] According to the control signal input of the control part 103, the receiving part 105 demultiplexes, demodulates and decodes the receive signal received from the base station apparatus 3 by means of the transmit/receive antenna, and outputs the decoded information for the upper layer processing part 101.
[00057] Radio receiving part 1057 converts (downconverts) a signal of each uplink component carrier received via each transmit/receive antenna into a signal of an intermediate frequency, removes unnecessary frequency components , controls the amplification level such that the signal level is properly maintained, performs quadrature demodulation based on the in-phase component and quadrature component of the received signal, and converts the quadrature demodulated analog signal into a digital signal. The radio receiving part 1057 removes a portion corresponding to a guard interval from the converted digital signal, performs Fast Fourier Transform on the signal from which the guard interval is removed, and extracts the signal in the frequency domain.
[00058] The demultiplexing part 1055 demultiplexes the extracted signal into PUCCH, PUSCH and Downlink Reference Signal. Furthermore, this demultiplexing is performed based on the radio resource allocation information notified by the Downlink Control Information, etc. Additionally, the demultiplexing part 1055 obtains a channel estimation value from the demultiplexed Downlink Reference Signal and performs channel compensation of the PDCCH and PDSCH.
[00059] The demodulation part 1053 demodulates the PDCCH with the QPSK modulation scheme to output to the decoding part 1051. The decoding part 1051 tries to decode the PDCCH, and when the part is successful in decoding, it outputs the Information The Downlink Control Parts decoded to the upper layer processing part 101. The demodulation part 1053 demodulates the PDSCH with the modulation scheme of QPSK, 16QAM, 64QAM, or similar, notified by the Downlink Control Information to send to the decoding part 1051. The decoding part 1051 performs the decoding associated with the encoding rate notified by the Downlink Control Information, and sends the decoded data information to the upper layer processing part 101.
[00060] The transmission part 107 generates an Uplink Reference Signal in accordance with the control signal input from the control part 103, encodes and modulates the data information input from the layer processing part upper 101, and multiplexes the PUCCH, PUSCH and Uplink Reference Signal generated to transmit to the base station apparatus 3 via the transmit/receive antenna.
[00061] Encoding part 1071 performs encoding such as turbo encoding, convolutional encoding, block encoding and the like in Uplink Input Information and data information input from upper layer processing part 101. modulation 1073 modulates encoded bits input from coding part 1071 with the modulation scheme of BPSK, QPSK, 16QAM, 64QAM or the like. Additionally, the modulation part 1073 rearranges the modulation symbols to gates corresponding to the number of spatial multiplexing sequences, and performs precoding on the signal for spatial multiplexing. Further, the precoding which the mobile station apparatus 1 performs is defined by the base station apparatus 3, and the base station apparatus 3 includes precoding information indicative in the uplink grant for transmitting to the mobile station 1.
[00062] The uplink reference signal generating part 1079 generates a CAZA sequence that the base station apparatus 3 knows and which is obtained by a rule determined in advance based on a cellular identifier to identify the base station apparatus 3, the bandwidth of the PUSCH, etc. Additionally, the uplink reference signal generating part 1079 applies cyclic shift and orthogonal coverage to the CAZAC sequence in accordance with the orthogonal resources of the DMRS identified by the orthogonal resource identification/spatial multiplexing sequence number part 1013.
[00063] The multiplexing part 1075 rearranges the PUSCH modulation symbols in parallel, then performs the Discrete Fourier Transform (DFT), and multiplexes the PUSCH processed by DFT, the PUCCH signal and the Link Reference Signal Ascendant (DMRS and/or SRS). Yet, at this point, the DMRSs of different orthogonal resources are time multiplexed for each PUSCH port.
[00064] The radio transmission part 1077 performs Fast Inverse Fourier Transform on the multiplexed signal, performs the modulation of the SC-FDMA scheme, adds a guard interval to the SC-FDMA modulated SC-FDMA symbol, generates a digital signal of baseband, converts the baseband digital signal to an analog signal, generates an intermediate frequency phase component and quadrature component of the intermediate frequency from the analog signal, removes excessive frequency components with respect to the intermediate frequency band, converts ( upconverts) the intermediate frequency signal to a high frequency signal, removes excessive frequency components, amplifies the power, and outputs the signal to the transmit/receive antenna for transmission. wireless
[00065] Figure 7 is a flowchart showing an example of the operation of the base station apparatus 3 according to this Modality. The base station apparatus 3 estimates the channel state from the PUSCH, DMRS and SRS received from the mobile station apparatus 1, defines the number of spatial multiplexing sequences that the mobile station apparatus 1 applies in transmitting the PUSCH, and allocates orthogonal resources of the DMRS which is time multiplexed with the PUSCH and transmitted (step S100).
[00066] The base station apparatus 3 selects a code word to display in the DMRS orthogonal resources information callsign from the number of spatial multiplexing sequences and the orthogonal resources assigned in step S100 (step S101), and generates the orthogonal resource information callsign, including the selected codeword and the spatial multiplexing sequence number information callsign (step S102). The base station apparatus 3 includes the information code generated from the orthogonal resources and the information code generated from the number of spatial multiplexing sequences in an uplink grant for transmitting on the PDCCH (step S103).
[00067] Figure 8 is a flowchart showing an example of the operation of the mobile station apparatus 1 according to this Modality. The mobile station apparatus 1 receives the uplink grant transmitted from the base station apparatus 3 (step S200), identifies the number of spatial multiplexing sequences used in transmitting the PUSCH from the information indicative of the number of spatial multiplexing sequences included in the uplink grant (step S201), and identifies the orthogonal resources used in the DMRS from the identified number of spatial multiplexing sequences, and the information code of the orthogonal resources used in the DMRS included in the uplink grant (step S202 ). The mobile station apparatus 1 spatially multiplexes the PUSCH with the number of spatial multiplexing sequences, and multiplexes the DMRS of the orthogonal resources identified in each PUSCH port to transmit to the base station apparatus 3 (step S203).
[00068] Thus, according to this Modality, the base station apparatus 3 defines the number (classification) of spatial data multiplexing sequences used by the mobile station apparatus 1 in the transmission of a PUSCH, further defines orthogonal resources used by the mobile station apparatus 1 for the reference signal (DMRS) which is transmitted along with the PUSCH, selects a code point to display in information indicative (first control information) of the orthogonal resources based on the defined orthogonal resources and on the defined number of spatial multiplexing sequences, and transmits downlink control information (uplink grant) including at least the orthogonal resource information indicative and information indicative (second control information) of the number of spatial multiplexing sequences to the mobile station device 1.
[00069] Meanwhile, the mobile station apparatus 1 receives the Downlink Control Information (uplink grant) transmitted from the base station apparatus 3, selects orthogonal resources used in the reference signal (DMRS) defined by the station apparatus base 3 from the orthogonal resource information tag and the spatial multiplexing sequence number information tag included in the uplink grant, the selected orthogonal resources to generate the reference signal (DMRS), and transmit the reference signal to the base station apparatus 3 together with the PUSCH. Hereby, it is possible to notify with respect to the orthogonal resources of the DMRS that the base station apparatus 3 assigns to the mobile station apparatus 1 a flexibility with the same PDCCH overhead as maintained conventional overhead. (A) To achieve the objective described above, the invention takes measures as described below. In other words, a wireless communication system of the invention is a wireless communication system in which a base station apparatus and at least one mobile station apparatus communicate with each other, and is characterized in that the station apparatus base defines the number (classification) of spatial multiplexing sequences of data used by the mobile station apparatus in transmitting a PUSCH, further defines orthogonal resources used by the mobile station apparatus for a reference signal that is transmitted along with the PUSCH , selects a code point to display in the first callsign orthogonal resource control information based on the defined orthogonal resources and the defined number of spatial multiplexing sequences, and transmits downlink control information including at least the first control information and second indication of control information of the defined number of spatial multiplexing sequences to the a mobile station apparatus, and that the mobile station apparatus receives the downlink control information, selects the orthogonal resources to apply to the reference signal defined by the base station apparatus from the first control information and the second control information included in the downlink control information, applies the selected orthogonal resources to generate the reference signal, and transmits the reference signal to the base station apparatus. (B) Additionally, the orthogonal features of the invention are characterized by being composed of a combination of a length of the cyclic shift in the reference signal in the time domain, and an orthogonal code sequence (orthogonal coverage) applied to the reference signal which is transmitted twice or more in a plurality of time symbols. (C) Furthermore, a base station apparatus of the invention is a base station apparatus applied to a wireless communication system in which the base station apparatus and at least one mobile station apparatus communicate with each other, and is characterized by defining the number (classification) of spatial multiplexing sequences of data used by the mobile station apparatus in transmitting a PUSCH, further defining orthogonal resources used by the mobile station apparatus for a reference signal that is transmitted along with the PUSCH, select a code point to display in the first callsign orthogonal resource control information based on the defined orthogonal resources and the defined number of spatial multiplexing sequences, and transmit downlink control information including at least the first control information and second indication of control information of the defined number of spatial multiplexing sequences to the apparatus d and mobile station. (D) Still further, a mobile station apparatus of the invention is a mobile station apparatus applied to a wireless communication system in which a base station apparatus and at least one mobile station apparatus communicate with each other, and is characterized by receiving downlink control information including at least first control information for the base station apparatus to select a code point from combinations of the number of spatial multiplexing (classification) data sequences, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH, and orthogonal resources used in a reference signal that is transmitted along with the PUSCH, and second indicative of control information of the number of sequences. spatial multiplexing, selecting orthogonal features to use in the reference signal defined by the base station apparatus from the first information of control information and the second control information included in the downlink control information, applying the selected orthogonal resources to generate the reference signal, and transmitting the reference signal to the base station apparatus. (E) Furthermore, a wireless communication method of the invention is a wireless communication method applied to a wireless communication system in which a base station apparatus and at least one mobile station apparatus communicate with each other, and is characterized by defining the number (classification) of spatial multiplexing sequences of data used by the mobile station apparatus in transmitting a PUSCH, means for defining orthogonal resources used by the mobile station apparatus for a reference signal which is transmitted together with the PUSCH, means for selecting a code point to arrange in the first callsign orthogonal resource control information based on the defined orthogonal resources and the defined number of spatial multiplexing sequences, and means for transmitting downlink control information including , at least the first control information and second control information callsign of the defined number of spatial multiplexing sequences to the mobile station apparatus. (F) Additionally, a wireless communication method of the invention is a wireless communication method applied to a wireless communication system in which a base station apparatus and at least one mobile station apparatus communicate with each other, and is characterized in that the mobile station apparatus has means for receiving downlink control information including at least the first control information for the base station apparatus to select a code point from sequence number combinations. data spatial multiplexing (classification), which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH, and orthogonal resources used in a reference signal that is transmitted along with the PUSCH, and second indicative of control information of the number of spatial multiplexing sequences, means for selecting orthogonal features for use in the reference signal defined by the lo base station apparatus from the first control information and second control information included in the downlink control information, and means for applying the selected orthogonal resources to generate the reference signal, and transmit the reference signal to the apparatus of base station.
[00070] The programs operating in the base station apparatus 3 and the mobile station apparatus 1 related to the invention may be programs (programs that make the computer work) that control the CPU (Central Processing Unit) and the like, to achieve the functions of the above-mentioned Modality relating to the invention. Then, the information handled on the devices is temporarily stored in RAM (Random Access Memory) at the time of processing, subsequently stored in various types of ROM such as Flash ROM (Read Only Memory) and HDD (Hard Disk) and when necessary , read by the CPU to be modified and registered.
[00071] Furthermore, a part or all of the mobile station apparatus 1 and the base station apparatus 3 in the above-mentioned Modality can be updated by the computer. In that case, the program for updating the control function can be stored on a computer-readable storage medium, and the program stored on the storage medium can be read by a computer system and executed for updating. Furthermore, the "computer system" described herein is the computer system incorporated in the mobile station apparatus 1 or the base station apparatus 3, and is intended to include the OS and hardware of peripheral devices and the like.
[00072] Additionally, "computer readable storage medium" means transportable medium such as a floppy disk, magneto-optical disk, ROM, CD-ROM and the like, and storage devices such as a hard disk and the like incorporated in the computer system . In addition, the "computer readable storage medium" may include medium that dynamically holds the program for a short period of time, such as communication lines in the case where the program is transmitted through communication channels of a network such as Internet and telephone lines, and kind of holding the program for a certain period of time, like a volatile memory inside the computer system that is the server or the client in this case. In addition, the programs mentioned above may be for updating a part of the functions as described previously, and further, they may be for updating the functions as described previously in combination with a program already stored in the computer system.
[00073] Furthermore, a part or all of the mobile station apparatus 1 and the base station apparatus 3 in the above mentioned Modality can be updated as LSI which is typically an integrated circuit. Each function block of the mobile station apparatus 1 and the base station apparatus 3 can be made in chip form separately, or a part or all of the blocks can be integrated and made in chip form. Still, additionally, the integrated circuit technique is not limited to LSI, and can be achieved through dedicated circuits or general purpose processor. Furthermore, when the integrated circuit technique as a replacement for LSI appears as an advance of semiconductor techniques, it is possible to use the integrated circuit through the technique.
[00074] As mentioned above, a Modality of the invention is specifically described with reference to the drawings, but specific configurations are not limited to the configurations as described above, and various design changes and the like are able to be made within scope without departing of the subject of the invention. Description of Symbols 1 (1A, 1B, 1C) Mobile station apparatus 3 Base station apparatus 101 Upper layer processing part 103 Control part 105 Receiving part 107 Transmitting part 301 Upper layer processing part 303 Control part 305 Receiving part 307 Transmitting part 309 Channel measurement part 1011 Radio resource control part 1013 Orthogonal resource identification part/Spatial multiplexing sequence number 1015 Storage part 1051 Decoding part 1053 Demodulation part 1055 part demultiplexing part 1057 Radio receiving part 1071 Encoding part 1073 Modulation part 1075 Multiplexing part 1077 Radio transmission part 1079 Uplink reference signal generation part 3011 Radio resource control part 3013 Definition part of Orthogonal Resource/Spatial Multiplexing Sequence Number 3015 Storage Part 3051 Decoding Part 3053 Demodulation part 3055 Demultiplexing part 3057 Radio receiving part 3071 Encoding part 3073 Modulation part 3075 Multiplexing part 3077 Radio transmission part 3079 Downlink reference signal generation part

权利要求:
Claims (11)
[0001]
1. Wireless communication system characterized in that a base station apparatus (3) and a mobile station apparatus (1A, 1B, 1C) communicate with each other, wherein the base station apparatus sets the number of sequences data spatial multiplexing (classification), which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH, further defines orthogonal resources used by the mobile station apparatus respectively for the same number of reference signals that the defined number of spatial multiplexing sequences that are transmitted along with the PUSCH, and transmitting downlink control information including information indicative of the defined number of spatial multiplexing sequences and information indicative of the defined orthogonal resources used for the reference signals , and the mobile station apparatus receives the downlink control information, selects, based on the ind. information indicator of the orthogonal resources and the number of spatial multiplexing sequences indicated by the information indicator of the number of spatial multiplexing sequences, orthogonal resources to be respectively applied to the same number of reference signals as well as to the number of spatial multiplexing sequences, applies the selected orthogonal resources to generate the reference signals, and transmits the generated reference signals to the base station apparatus, the orthogonal resource information indicative is transmitted as a code point which is one of a plurality of predetermined code points comprising at least a first code point and a second code point, the number of bits used in the code point is a predetermined value, the first code point of the orthogonal resource information code indicates that a same orthogonal code sequence , orthogonal coverage, is applied to all of the same number d and reference signals that the defined number of spatial multiplexing sequences, and the second code point of the orthogonal resource information code indicates that a plurality of different orthogonal code sequences is applied to the same number of reference signals as the defined number of spatial multiplexing sequences.
[0002]
2. Base station apparatus (3) communicating with a mobile station apparatus (1A, 1B, 1C), characterized in that the base station apparatus defines the number of spatial multiplexing (classification) sequences of data, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH, further defines orthogonal resources used by the mobile station apparatus respectively to the same number of reference signals as the defined number of spatial multiplexing sequences that are transmitted along with the PUSCH, and transmits downlink control information including information indicative of the defined number of spatial multiplexing sequences and information indicative of the defined orthogonal resources used for the reference signals, wherein the information indicator of the orthogonal resources are passed as a code point that is one of a plurality of preset code points. leaves comprising at least a first code point and a second code point, the number of bits used in the code point is a predetermined value, the first code point of the orthogonal resource information code indicates that a same code sequence orthogonal, orthogonal coverage, is applied to all of the same number of reference signals as the defined number of spatial multiplexing sequences, and the second code point of the orthogonal resource information code indicates that a plurality of different orthogonal code sequences is applied to the same number of reference signals as the defined number of spatial multiplexing sequences.
[0003]
3. Base station apparatus according to claim 2, characterized in that the orthogonal features include a combination of a length of a cyclic shift in the time domain reference signals, and an orthogonal code sequence (orthogonal coverage ) applied to reference signals that are transmitted twice or more in a plurality of time symbols.
[0004]
4. Base station apparatus according to claim 2, characterized in that orthogonal resources associated with an orthogonal resource information callsign code point vary with spatial data multiplexing sequences used by the mobile station apparatus in transmission of PUSCH.
[0005]
5. Mobile station apparatus (1A, 1B, 1C) communicating with a base station apparatus (3), characterized in that the mobile station apparatus receives downlink control information transmitted from the base station apparatus , including information indicative of the number of spatial multiplexing (classification) sequences of data, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH, and information indicative of orthogonal resource information respectively used for the same number of reference signals as the number of PUSCH spatial multiplexing sequences that are transmitted along with the PUSCH, it selects, based on the orthogonal resource information callsign and the number of spatial multiplexing sequences indicated by the number information callsign of spatial multiplexing sequences, orthogonal features to apply respectively to the same number of reference signals. ence that the number of spatial multiplexing sequences indicated by the information code of the number of spatial multiplexing sequences of the orthogonal resource information code, applies the selected orthogonal resources to generate the reference signals, and transmits the generated reference signals to the base station apparatus, wherein the orthogonal resource information indicative is transmitted as a code point which is one of a plurality of predetermined code points comprising at least a first code point and a second code point, the number of bits used in the code point is a predetermined value, the first code point indicative of orthogonal resource information indicates that the same orthogonal code sequence, orthogonal coverage, is applied to all of the same number of reference signals as the defined number of spatial multiplexing sequences, and the second code point of the information code. The orthogonal resource functions indicates that a plurality of different orthogonal code sequences is applied to the same number of reference signals as the defined number of spatial multiplexing sequences.
[0006]
6. Mobile station apparatus according to claim 5, characterized in that the orthogonal features include a combination of a length to perform a cyclic shift in the time domain reference signals, and an orthogonal code sequence (coverage orthogonal) applied to reference signals that are transmitted twice or more in a plurality of time symbols.
[0007]
7. Mobile station apparatus according to claim 9, characterized in that the orthogonal resources associated with an orthogonal resource information code point vary with spatial data multiplexing sequences used by the mobile station apparatus in the PUSCH transmission.
[0008]
8. Wireless communication method used in a base station apparatus (3) that communicates with a mobile station apparatus (1A, 1B, 1C), characterized in that it includes the steps of: defining the number of sequences of spatial multiplexing (classification) of data, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH; setting the orthogonal resources used by the mobile station apparatus respectively to the same number of reference signals as the defined number of spatial multiplexing sequences that are transmitted along with the PUSCH; and transmitting downlink control information including information indicative of the defined number of spatial multiplexing sequences and information indicative of defined orthogonal resources used for the reference signals, wherein the orthogonal resource information indicative is transmitted as a point of code which is one of a plurality of predetermined code points comprising at least a first code point and a second code point, the number of bits used in the code point is a predetermined value, the first code point indicative of information of the orthogonal resources indicates that the same orthogonal code sequence, orthogonal coverage, is applied to all of the same number of reference signals as the defined number of spatial multiplexing sequences, and the second code point of the orthogonal resources information code indicates that a plurality of different orthogonal code sequences apply. assigned to the same number of reference signals as the defined number of spatial multiplexing sequences.
[0009]
9. Wireless communication method in a mobile station apparatus (1A, 1B, 1C) that communicates with a base station apparatus (3), characterized in that it includes the steps of: receiving downlink control information , transmitted from the base station apparatus, including information indicative of the number of spatial multiplexing (classification) sequences of data, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH, and information indicative of orthogonal resources respectively used for the same number of reference signals as the number of spatial multiplexing sequences of the PUSCH that are transmitted along with the PUSCH; select, based on the orthogonal resource information callsign and the number of spatial multiplexing sequences indicated by the spatial multiplexing sequence number information callsign, orthogonal resources to apply respectively to the same number of reference signals as the number of sequences of spatial multiplexing indicated by the information code of the number of sequences, spatial multiplexing of the information code of the orthogonal resources; and applying the selected orthogonal resources to generate the reference signals, and transmitting the generated reference signals to the base station apparatus, wherein the information indicative of the orthogonal resources is transmitted as a code point that is one of a plurality of predetermined code points comprising at least a first code point and a second code point, the number of bits used in the code point is a predetermined value, the first code point indicative of orthogonal resource information indicates that a same sequence code points, orthogonal coverage, is applied to all of the same number of reference signals as the defined number of spatial multiplexing sequences, and the second code point of the orthogonal resource information code indicates that a plurality of orthogonal code sequences different is applied to the same number of reference signals as the defined number of multiplex sequences spatial action.
[0010]
10. Integrated circuit used in a base station apparatus (3) that communicates with a mobile station apparatus (1A, 1B, 1C), characterized in that it causes the base station apparatus to perform at least: define the number of spatial multiplexing (classification) sequences of data, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH; defining orthogonal resources used by the mobile station apparatus respectively for the same number of reference signals as the defined number of spatial multiplexing sequences that are transmitted along with the PUSCH; and transmitting downlink control information including information indicative of the defined number of spatial multiplexing sequences and information indicative of defined orthogonal resources used for the reference signals, wherein the orthogonal resource information indicative is transmitted as a point of code which is one of a plurality of predetermined code points comprising at least a first code point and a second code point, the number of bits used in the code point is a predetermined value, the first code point indicative of information of the orthogonal resources indicates that the same orthogonal code sequence, orthogonal coverage, is applied to all of the same number of reference signals as the defined number of spatial multiplexing sequences, and the second code point of the orthogonal resources information code indicates that a plurality of different orthogonal code sequences apply. assigned to the same number of reference signals as the defined number of spatial multiplexing sequences.
[0011]
11. Integrated circuit used in a mobile station apparatus (1A, 1B, 1C) that communicates with a base station apparatus (3), characterized in that it makes the mobile station apparatus perform at least: receive information of downlink control, transmitted from the base station apparatus, including information indicative of the number of spatial multiplexing (classification) sequences of data, which is the number being used by the mobile station apparatus when the mobile station apparatus transmits a PUSCH , and indicative of orthogonal resource information respectively used for the same number of reference signals as the number of spatial multiplexing sequences of the PUSCH that are transmitted along with the PUSCH; select, based on the orthogonal resource information callsign and the number of spatial multiplexing sequences indicated by the spatial multiplexing sequence number information callsign, orthogonal resources to apply respectively to the same number of reference signals as the number of sequences of spatial multiplexing indicated by the information code of the number of sequences, spatial multiplexing of the information code of the orthogonal resources; and applying the selected orthogonal resources to generate the reference signals, and transmitting the generated reference signals to the base station apparatus, the orthogonal resource information indicative is transmitted as a code point which is one of a plurality of code points. predetermined codes comprising at least a first code point and a second code point, the number of bits used in the code point is a predetermined value, the first code point indicative of orthogonal resource information indicates that a same code sequence orthogonal, orthogonal coverage, is applied to all of the same number of reference signals as the defined number of spatial multiplexing sequences, and the second code point of the orthogonal resource information code indicates that a plurality of different orthogonal code sequences is applied to the same number of reference signals as the defined number of multiplexing sequences. pacial.

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同族专利:

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公开号 | 公开日

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US20120269144A1|2012-10-25|

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DE112010004164T5|2012-11-29|

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US8934429B2|2015-01-13|

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CA2779148A1|2011-05-05|

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EP2495905B1|2014-06-25|

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WO2011052353A1|2011-05-05|

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AU2010312852B2|2015-06-18|

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BR112012010035A2|2016-05-24|

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ZA201203365B|2013-08-28|

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JP2011097386A|2011-05-12|

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US20150156758A1|2015-06-04|

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EP2495905A1|2012-09-05|

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CN102598567A|2012-07-18|

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DE112010004164T8|2013-03-07|

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AU2010312852A1|2012-05-31|

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JP5087061B2|2012-11-28|

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CA2779148C|2017-05-02|

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CN102598567B|2014-09-10|

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EP2495905A4|2013-06-12|

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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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2020-01-28| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04J 99/00 , H04J 11/00 , H04L 27/00 Ipc: H04L 5/00 (2006.01), H04W 72/04 (2009.01), H04B 7/ |

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2020-01-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2021-03-30| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2021-05-04| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 04/05/2021, 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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JP2009-249699|2009-10-30|

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JP2009249699A|JP5087061B2|2009-10-30|2009-10-30|Wireless communication system, base station apparatus, mobile station apparatus, and wireless communication method|

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PCT/JP2010/067540|WO2011052353A1|2009-10-30|2010-10-06|Wireless communication system, base station device, mobile station device, wireless communication method, and integrated circuit|

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