terminal device and method of communication

专利摘要:
TERMINAL APPLIANCE AND COMMUNICATION METHOD OF THE SAME. The present invention relates to a terminal device capable of preventing degradation of the quality of reception of control information, even for a case that employs a SU-MIMO transmission system. A terminal (200) that uses a plurality of different layers to transmit two code words in which the control information is placed, a resource quantity determination unit (204) that determines based on the lowest rate of the coding rates of the two code words or based on the average value of the reciprocal of the coding rates of the two code words, amounts of control information resource in the respective plurality of layers, and a transport signal formation unit (205) that places, in the two code words, control information modulated by the use of resource quantities, hence forming a transport signal.
公开号:BR112012031268B1
申请号:R112012031268-5
申请日:2011-06-07
公开日:2021-02-09
发明作者:Yoshihiko Ogawa；Akihiko Nishio；Seigo Nakao
申请人:Sun Patent Trust；
IPC主号:

专利说明:

Technical Field
The present invention relates to a terminal device and method of communication thereof. Technique Background
In the Third Generation Partnership Project (3GPP LTE) Long Term Evolution uplink, a single carrier transmission is performed to maintain a reduced volume (CM) measurement. More specifically, in the presence of data signals, the data signals and control information are multiplexed in time and transmitted on a shared physical uplink channel (PUSCH). The control information includes response signals (re-known positive / negative (ACK / NACK)), (hereafter called ACK / NACK signals) and channel quality indicators (hereafter CQIs). Data signals are divided into code blocks (CB), and a cyclic redundancy conversion code (CRC) is added to each code block for error correction.
ACK / NACK and CQIs signals have different allocation methods, (see Non-Patent Literature 1 and 2, for example). More specifically, ACK / NACK signals are allocated to the data signal resource parts by punching parts of the data signals (4 symbols) mapped to the resource adjacent to the reference signals (RSs) (that is, overwriting the signals data with ACK / NACK signals). In contrast, CQIs are allocated in entire subframes (2 slots). Once the data signals are allocated to resources other than the allocated CQI resource, the CQIs are punctured (see figure 1). The reasons for allocation difference are as follows: allocation or non-allocation of ACK / NACK signal depends on the presence or absence of downlink data signals. In other words, it is more difficult to predict the occurrence of ACK / NACK signals than CQIs; then, punching capable of allocating sudden ACK / NACK signal resources is used when mapping ACK / NACK signals. Meanwhile, the CQI transmission delay (ie, subframes) is predetermined based on notification information, which allows the determination of CQI data signal allocation and resources. As ACK / NACK signals constitute interfering information they are assigned to symbols in the vicinity of pilot signals, which have a high estimation accuracy for transmission paths, thereby reducing ACK / NACK signal errors.
A modulation rate and encoding (MCS) scheme for uplink data signals is determined by a base station device (hereinafter referred to as base station or eNB) based on the uplink's channel quality. An MCS for control information in the uplink is determined by adding offset to the MCS for data signals (see Non-Patent Literature 1, for example). More specifically, since control information is more important than data signals, the MCS for control information is set at a lower transmission rate than the MCS for data signals. This guarantees a high quality transmission for control information.
For example, in the 3GPP LTE uplink, if the control information is transmitted in PUSCH, the amount of resource assigned to the control information is determined based on an encoding rate indicated in the MCS for data signals. More specifically, as in Equation 1, the amount of resource Q assigned to the control information is obtained by multiplying the inverse of the coding rate of the data signal by a displacement.

With reference to Equation, "O" indicates the number of bits in the control information (ie, ACK / NACK or CQI signal), and "P" indicates the number of bits for error correction added to the control information ( for example, the number of CRC bits, and in some cases P = 0). The total of "P" and "O" (O + P) indicates the number of bits in the uplink control information (UCI). MscPUSCH'initial. NsymbPUSCH'initial. C and Kr indicate the transmission bandwidth for PUSCH, the number of symbols transmitted in the PUSCH per period of transmission bandwidth, the number of code blocks, into which the data signals are divided, and the number of bits in each code block, respectively. UCI (ie, control information) includes 5 ACK / NACK, CQI, a classification indicator (RI) that indicates classification information, and a pre-coding matrix indicator (PMI), which provides pre-coding information.
With reference to Equation 1, (MscPUSCH'imt, al NsymbPUSCH "initial) indicates amount of transmission data signal resources, ∑K indicates the number of bits in a single data signal (that is, the total number bits in blocks of code into which the data signal is divided). Therefore, ∑- Kr / (MscPUSCH ■ init'al ■ NsymbPUSCH ■ 'nlt'a,) represents a value, which depends on the device's encoding rate 1 dorKr / (MscPUSCH'iπitial NSymbPUSCH'initial) shown in Equation 1, indicates the inverse of the encoding rate of the data signal, (that is, the number of resource elements (RE resource consisting of a symbol or a subcarrier used to transmit a bit). βOffeetPUSCH indicates the amount of displacement by which the aforementioned inverse of the coding rate of the given signal is multiplied and reported from a base station to each terminal device (hereinafter referred to as "terminal" or UE), via upper layers. More specifically, one and base station indicating candidates for the displacement quantities βOffsetPUSCH is defined for each part of the control information (ie, ACK / NACK and CQI signal). For example, a base station selects an βOffeetPUSCH offset amount from the table (for example, see figure 2) containing candidates for the βoffsetPUSCH offset amount defined for ACK / NACK signal, and then notifies a terminal of an index of notification corresponding to the selected amount of travel. As evident with the term "PUSCH-initial", (MscPUSCH ‘initial NsymbPUSCH‘in, tial) represents amount of transmission resource for initial transmission of a data signal.
The standardization 3 GPP LTE-Advanced, which provides a transmission speed higher than 3 GPP LTE, started. The 3 GPP LTE-
Advanced (hereinafter LTE-A system) follows the 3GPP LTE system (hereinafter, LTE system). In LTE-Advanced 3 GPP, base stations and terminals, which can communicate in a high frequency range of 40 MHz or higher, will be introduced to obtain downlink 5 transmission rates of up to 1 Gbps.
In an LTE-Advanced uplink, the use of transmission of multiple inputs and outputs of single user (SU-MIMO) was studied, in which a single terminal transmits data signals in a plurality of layers. In communications (SU-MIMO), data signals are generated in a plurality of code words (CWs), each of which is transmitted in different layers. For example, CW # 0 is transmitted in layers # 0 and # 1, and CW # 1 is transmitted in layers # 2 and # 3. In each CW, a data signal is divided into a plurality of code blocks, and CRC is added to each code block with respect to error correction. For example, a CW # 0 data signal is divided into five code blocks, and a CW # 1 data signal is divided into eight code blocks. The term "codeword" refers to a unit of data signals to be retransmitted. The term "layer" here is synonymous with flow.
Unlike the aforementioned LTE-A system, the LTE systems described in Non-Patent Literature 1 and 2, assume the use of non-MIMO transmission in uplink, where a single layer is used on each terminal.
In SU-MIMO transmission, the control information is transmitted in a plurality of layers, in some cases, and in a plurality of 25 layers, in other cases. For example, in an LTE-Advanced uplink, we studied the allocation of ACK / NACK signal in a plurality of CWs and of a CQI in a single CW. More specifically, since the ACK / NACK signal is the most important information in all parts of the control information, the same ACK / NACK signal is allocated to all CWs (that is, the same information is assigned to all layers (data transmission). classification 1)), hence reducing inter-layer interference. The same ACK / NACK signals transmitted over a plurality of CWs (ie, multiplexed space division) are combined into a separate piece of information in a transmission path, thereby eliminating the need for the receiving side (base station) to separate ACK signals / NACK transmitted on a plurality of CWs. Therefore, interlayer interference, which can occur on the receiving side during separation, does not occur. Thus, a high quality of reception is achieved. It should be noted that the description above assumes that the control information is an ACK / NACK signal allocated to two CWs (CW # 0 and CW # 1). List of Citations Non-Patent Literature NPL1 TS36.212 v8.7.0, "3GPP TSG RAN; Evolved Universal Terrestrial Radio Access (E-UTRA); Multiplexing and channel coding" NPL2 TS36.213 vδ.8.0, "3GPP TSG RAN; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Layer Procedure " Summary of the Invention Technical problem
In SU-MIMO communications, when PUSCH control information is transmitted, the amount of resources required to allocate control information (ACK / NACK signals) is determined based on the encoding rate of two CWs, as in the LTE system. (for example, Non-Patent Literature 1). For example, as in Equation 2, the icw # o encoding rate of the two CWs (ie, CW # 0 and CW # 1) is used to determine the amount of Qcw # o resource required to assign control information to each layer. .

In Equation 2, L indicates the total number of layers (total number of layers to which CW # 0 and CW # 1 are assigned). In Equation 2, as in Equation 1, the amount of resources required to allocate control information in each layer is determined by multiplying the inverse (1 / rcw # o) of the rcw # o encoding rate by the amount of displacement βOffsetPUSCH, and then , dividing the result by the total number of L layers. A terminal uses the amount of resource Qcw # o, determined according to Equation 2, 5 to transmit CW # 0 and CW # 1, assigned to the layers (that is, L layers) .
In this case, where CW # 0 and CW # 1 are combined at the base station, there is a concern that the quality of receiving control information after the combination is poor, and does not meet the requirements. CW # 0, for example, is transmitted using the Qcw # o resource amount, determined based on the CW # 0 rcw # o coding rate, ie the amount of resource appropriate for CW # 0. Therefore, the control information allocated in CW # 0 probably meets the required reception quality. In contrast, CW # 1, is transmitted using the amount of Qcw # o resource, determined based on the rCw # o encoding rate of '15 0 (that is, the other CW). Thus, the control information allocated in CW # 1 can affect the reception quality, if the layer in which CW # 1 is allocated has a bad environment for the transmission path.
As in figure 3, for example, CW # 0 is allocated to the layers. # 0 and # 1 and CW # 1 in layers # 2 and # 3. A description will be provided for the case where the CW # 0 coding rate is higher than the CW # 1 coding rate. In other words, the amount of resources required for control information allocated in CW # 0 is less than that allocated in CW # 1.
In layers # 0 and # 1, the control information in CW # 0 meets the quality of reception required by each CW (that is, the quality of re-receipt required for control information for the LTE system / number of CWs) . In contrast, in layers # 2 and # 3, the control information in CW # 1 has an amount of resource determined based on CW # 0; thus, the amount of resources to meet the required reception quality is insufficient, thus, it does not meet the required reception quality for each CW. Thus, the combination of control information in CW # 0 and CW # 1 provides a lower reception quality than that required for all CWs (ie, reception quality required for control information in the LTE system).
Therefore, it is an objective of the present invention to provide a terminal device capable of preventing the degradation of the quality of reception of control information, even when adopting the SU-MIMO transmission method, and also to provide a communication method for the same. Solution of the problem
A first aspect of the present invention provides a terminal device, which transmits two code words to which the control information is allocated, in a plurality of layers, including: a de-termination section, which determines the amount of resource of the control information. - control in each of the plurality of layers; and a transmission signal generation section, which generates an information signal by modulating the control information, using the amount of resource and allocation of the modulated control information for the code words, in which the determination section determines the amount of resource based on the lowest coding rate of the coding rates of the two codewords, or the average of the inverses of the coding rates of the two codewords.
A second aspect of the present invention provides a method of communication, which includes determining an amount of control information resource in each of the plurality of different layers, in which two code words are transmitted, the control information being allocated to the two. code words; modulate the two code words, using the amount of resource, and allocate the control information modulated in the two code words to generate a transmission signal, in which the amount of resource is determined based on the lowest coding rate of the coding rates of the two code words, or the average of the inverse of the coding rates of the two code words Advantageous effects of the invention
The present invention can avoid the degradation of the quality of reception of control information, even in the case of adopting the SU-MIMO transmission method. Brief Description of the Drawings Figure 1 shows conventional allocation of ACKs / NACKs and CQIs. figure 2 is a diagram provided to describe a table containing candidates for a displacement amount in a conventional case. Figure 3 is a diagram provided to describe a technical problem. figure 4 is a block diagram showing the modality of a base station according to modality 1 of the present invention; Figure 5 is a block diagram showing the Modality of a base station according to Modality 1 of the present invention; figure 6 shows exemplary correction factors, according to '15 to Mode 1 of the present invention; figure 7 shows exemplary correction factors, according to Modality 2 of the present invention; figure 8 shows exemplary correction factors, according to Modality 2 of the present invention; figure 9 shows a technical problem for the case, where the number of layers of the initial transmission is different from the number of retransmission layers, according to Modality 3 of the present invention; and figure 10 shows a process for determining the amount of control information resources in accordance with Mode 3 of the present invention. Description of Modalities
Modalities of the present invention will be described in detail with reference to the drawings. In Modalities, the same components 30 will be given the same reference numbers, without a redundant description. Mode 1 [Overview of the Communication System] In the description below, a communication system, including base station 100 and terminal 200, which will be described, is an LTE-A system. Base station 100 is an LTE-A base station and terminal 200 is an LTE-A terminal, for example. The communication system is assumed to be a double frequency division (FDD) system. Terminal 200 (LTE-A terminal) can switch between non-MIMO and SU-MIMO transmission modes. Base Station Mode Figure 11 is a block diagram showing the Base Station Mode 100, in accordance with the present invention.
At base station 100, as in figure 4, an adjustment section 101 adjusts control parameters related to the allocation of resource for control information (including at least ACK / NACK or CQIs signals) transmitted on a PUSCH uplink data channel, used to communicate with a terminal for which the control parameters are adjusted based on the terminal's transmission and reception capacity (ie EU capacity) or state of the communication path. The control parameters include, for example, an amount of displacement (for example, amount of βOflsetPUSCH as in Equation 2) used in the resource allocation of the control information transmitted by the terminal to which the control parameters are adjusted. The adjustment section 101 issues adjustment information including control parameters for the coding and modulation section 102 and for the receiving section of ACK / NACK and CQ1111.
For terminals performing non-MIMO transmission, tuning section 101 generates MCS information for a single CW (or transport block), and allocation control information, including resource (or allocation information, resource block allocation information (RB)), while for terminals performing SU-MIMO transmission, the setting section 101 generates allocation control information including MCS information for the two CWs (or transport blocks) or similar.
The allocation control information generated by setting section 101 includes uplink allocation control information, indicating uplink resource (for example, shared physical uplink channel (PUSCH)), to which uplink data from a terminal is assigned , and downlink allocation control information indicating downlink resource (for example, physical downlink shared channel (PDSCH)) to which downlink data forwarded to a terminal is assigned. In addition, the downlink allocation control information includes information indicating the number of bits of ACK / NACK signals for downlink data (ie, ACK / NACK information). Adjustment section 101 issues uplink allocation control information for coding and modulation section 102, reception processing sections 109 in reception sections 107-1 to 107-N, and reception section ACK / NACK and CQI 111, and issues downlink allocation control information for transmission signal generation section 104 and ACK / NACK and CQ1111 reception section.
The coding and modulation section 102 encodes and modulates adjusted information and uplink allocation control information received from setting section 101, and then outputs modulated data signals to the transmission signal generation section 104.
The coding and modulation section 103 encodes and modulates transmission data to be received, and then outputs the modulated data signals (e.g., PDSCH signals) to transmission signal generation section 104.
The transmission signal generation section 104 allocates signals received from the coding and modulation section 102 and data signals received from the coding and modulation section 103 to a frequency resource to generate frequency domain signals with based on the downlink allocation control information received from setting section 101. The transmission signal generation section 104 then converts the frequency domain signals into waveform-time signals using processing of Inverse Fast Fourier Transformation (IFFT), and adds a cyclic prefix (CP) to the waveform-time signals, thereby obtaining multiplexing signals by orthogonal frequency division (OFDM).
The transmission section 105 performs processing via radio transmission (upward conversion and digital-to-analog conversion (D / A or similar) on the OFDM signals received from the transmission signal generation section 104, and then the transmits via antenna 106-1.
Receiving sections 107-1 to 107-N are provided for antennas 106-1 to 106-N, respectively. Reception sections 107 include respective radio processing sections 108 and reception processing sections 109.
More specifically, the radio processing sections 108, in the respective reception sections 1-7-1 to 107-N, receive radio signals through the respective antennas 106, perform radio processing (downward conversion and analog-to-digital conversion (A / D) and / or similar) on the received radio signals, and then output the resulting reception signals to the respective reception processing sections 109.
The reception processing sections 109 remove CP from the reception signals and perform a fast Fourier transformation (FFT) on the signals, to convert them into frequency domain signals. Receive processing sections 109 extract uplink signals for each terminal (including data signals and control signals (i.e., ACK / NACK and CQI signals) from the frequency domain signals based on the received uplink allocation control information of the adjustment section 101. If the reception signals are multiplexed by space division (that is, a plurality of CWs are used (in SU-MIMO transmission)), the reception processing sections 109 separate and combine the CWs The reception processing sections 109, then, perform an inverse discrete Fourier transformation (IDFT) processing on the extracted and separated signals), to convert them into time domain signals. Reception processing sections 109 emit time domain signals to data reception section 110 and reception section ACK / NACK and CQI 111.
The data receiving section 110 decodes the time domain signals received from the receiving processing sections 109, and then outputs the decoded uplink data as reception data.
The receiving section ACK / NACK and CQI 111 calculates the amount of uplink resource, for which ACK / NACK signals are assigned, based on the setting information (ie, control parameters), the MCS information for data signals uplink (ie MCS information for each MCS for SU-MIMO transmission) and downlink allocation control information (for example, ACK / NACK information showing the number of ACK / NACK signal bits for downlink data) received from the tuning section 101. For CQIs, the receiving section of ACK / NACK and CQ1111 additionally calculates the amount of uplink resource (ie, PUSCH) to which the CQI is assigned, using information with respect to the present number of CQI bits. Based on the calculated amount of resource, the ACK / NACK and CQI 111 receiving section then extracts ACK / NACK or CQIs terminal decade to downlink data (PDSCH signals) from the channel (for example, PUSCH) to which the data signals uplink have been assigned.
If the traffic status in the cells covered by the base station 100 remains unchanged, or if the measurement of an average reception quality is required, control parameters (for example, quantity of βoffeetPUSCH) to be notified by the base station 100 to the terminal 200, should preferably be transmitted in an upper layer in a long notification interval (RRC signaling), from the signaling perspective. By transmitting all or part of these control parameters as broadcast information, it reduces the amount of resources required for notification.
Conversely, if the control parameters need to be dynamically modified, in response to the control state in the cells covered by the base station 100, all or part of these control parameters should preferably be notified in PDCCH within a short notification interval. Terminal Mode Figure 12 is a block diagram showing Terminal Mode 200, in accordance with Mode 1 of the present invention. Terminal 200 is an LTE-A terminal, which receives data signals (downlink data) and transmits an ACK / NACK signal that corresponds to the data signals via a physical uplink control channel (PUCCH) or PUSCH to the base station 100. Terminal 200 transmits CQI to the base station, according to instruction information notified via a physical downlink control channel (PDCCH).
At the terminal 200 shown in figure 5, the receiving section 202 performs radio processing (downward conversion and analog-to-digital conversion (A / D) and / or similar) on the radio signals received through the 5 antennas 201- 1 (OFDM signals) and output the resulting reception signals to the reception processing section 203. Reception signals include data signals (for example, PDSCH signals), allocation control information, and upper layer control information , including adjustment information.
The reception processing section 203 removes the CP from the reception signals, and performs rapid Fourier transformation (FFT) on the remaining signals, to convert them into frequency domain signals. The reception processing section then separates the frequency domain signals into upper layer control signals (for example, RRC signaling), including tuning information, allocation control information and data signals (ie ie, PDSCH signals), and also demodulates and decodes the separate signals. The receive processing section 203 also checks the data signals for errors, and if the received data * contains errors, an ACK signal is generated, otherwise it generates an ACK signal as an ACK / NACK signal. The receive processing section 203 outputs ACK / NACK signals and ACK / NACK information and MCS information in the allocation control information, for the resource quantity determination section 204 and transmission signal generation section 205 (for example, control parameters (offset amount)) for the resource quantity determination section 204, and outputs the uplink allocation control information in the allocation control information (for example, uplink resource allocation results ) for transmission processing sections 207 in the respective transmission sections 206-1 to 206-M.
The resource quantity determination section 204 determines the amount of resource required to allocate ACK / NACK signals based on ACK / NACK information (number of ACK / NACK signal bits), MCS information, and control parameters ( amount of displacement or similar) with respect to the allocation of control information resources (ACK / NACK signs) received from the reception processing section 203. For CQIs, the resource quantity determination section 204 determines the quantity resource required to allocate CQIs based on MCS information and control parameters (amount of displacement or similar) with respect to the allocation of control information (CQIs) received from the receiving processing section, and the preset number of bits of a CQI. In the case of SU-MIMO transmission, where two CWS (CW # 0 and CW # 1) are transmitted in a plurality of layers, the resource quantity de-termination section 204 determines the amount of resource for each of the plurality of layers, the amount of the sen-do resource allocated to the control information (ACK / NACK signals) allocated in the two CWs (CW # 0 and CW # 1). More specifically, the resource quantity determination section 204 determines the resource quantity based on either the lowest coding rate of the coding rates of the two CWs or the average of the inverses of the coding rates of the two CWs. Details on the methods for determining the amount of resource required to allocate control information (ACK / NACK or CQIs) in the resource quantity determination section 204 will be given later. The resource quantity determination section 204 issues the determined resource quantity to the transmission signal generation section 205.
The transmission signal generation section 205 generates a transmission signal by allocating an ACK / NACK signal (result of downlink data error detection), data signals (uplink data), and CQIs (downlink quality information) in CWs allocated to one or more layers based on ACK / NACK information (number of bits of an ACK / NACK signal), and MCS information received from the receive processing section 203.
More specifically, the transmission signal generation section 205 first modulates the ACK / NACK signal based on the amount of re-travel (that is, the amount of resource from the ACK / NACK signal) received from the quantity determination section. resource 204. The transmission signal generation section 205 also modulates CQI based on the amount of resource (ie, quantity of the CQIs resource) received from the resource quantity determination section 204. The generation section transmission signal number 205 modulates transmission data, using the specified resource quantity, using the resource quantity (that is, CQI resource quantity) received from the resource quantity determination section 204 (the resource quantity is specified by subtracting the resource quantity of CQI resource from the resource quantity of each slot).
In the case of a non-MIMO transmission, the transmission signal generation section 205 generates a transmission signal, allocating ACK / NACK signal, data signals and CQI that have been modulated using the aforementioned amount of resource in a single CW. However, in the case of a SU-MIMO transmission, the transmission signal transmission section 295 generates a transmission signal by allocating ACK / NACK signal, and data signals that have been modulated using the amount of resource above in the two CWs, and allocating CQI in one of the two CWs. In addition, in the case of non-MIMO transmission, the transmission signal generation section 205 designates a single CW to a single layer, and in the case of SU-MIMO transmission section, the transmission signal generation section 205 designates the two CWs to a plurality of layers. For example, for the SU-MIMO transmission case, the transmission signal generation section 205 assigns CW # 0 to layers # 0 and # 1, and CW # 1 to layers # 2 and # 3.
In the presence of the data signals and CQIs to be transmitted, the transmission signal generation section 205 assigns data signals and CQIs to an uplink data channel (PUSCH) by time multiplexing or frequency division multiplexing, using a rate equivalent to one of the plurality of CWs, as shown in figure 1. In the presence of data signals and ACK / NACK signals to be transmitted, the transmission signal generation section 205 overwrites part of the data signals with ACK / NACK signals NACK in all layers of the plurality of layers (that is, punching). In other words, ACK / NACK signals are transmitted at all layers. In the absence of data signals to be transmitted, the transmission signal generation section 205 assigns ACK / NACK and CQIs signals to an uplink control channel (e.g., PUCCH). The transmission signal generation section 205 then outputs the transmission signals thus generated (including ACK / NACK signals, data signals or CQIs), to transmitting sections 5 206-1 to 206-N.
The transmitting sections 206-1 to 206-N correspond to ante-nos 201-1 to 201-M, respectively. The transmitting sections include transmission processing sections 207 and radio processing sections 208 respectively. More specifically, transmission processing sections 207, in the respective transmitting sections 2061 to 306-M, perform a discrete Fourier transformation (DFT) for the transmission signals received from the transmission signal generation section 205 (i.e., signals corresponding to the respective layers) to convert data signals, ACK / NACK signals, and CQIs into frequency domain signals. The transmission processing sections 207 then map the plurality of frequency components obtained by DFT processing (including ACK / NACK signals and CQIs transmitted on the PUSCH) to the uplink data channels. (PUSHB) based on the uplink resource allocation information received from the transmission processing section 203. The transmission processing sections 207 convert the plurality of frequency components mapped to PUSCH, to the domain waveform of time and add CP to it.
The radio processing sections 208 perform radio processing (upward conversion and Digital-Analog conversion (D / A) and / or similar) on the signals to which CP has been added, and then transmit them through the respective antennas 201 -1 to 201-M. (Operation of Base Station 100 and Terminal 20)
The operations of base station 100 and terminal 200 having the above mentioned Modalities will be described below. In particular, the method used by the resource quantity determination section 204 of terminal 200 to determine the amount of resource required to allocate control information (ACK / NACK or CQIs) will be described in detail below. In the description that follows, the method for determining the amount of resource in the SU-MIMO transmission will be described, where the plurality of CWs, to which the control information is allocated is transmitted in a plurality of layers.
In the following description, terminal 200 (broadcast signal generation section 205) allocates ACK / NACK signals, which are control information, to the two CWs (ie „CW # 0 and CW # 1). The determination methods 1 to 5, to determine the amount of resource of the control information, will be described below. Determination Method 1
In Determination Method 1, the resource quantity determination section 204 determines the amount of resource required to allocate control information in each layer, based on the lowest codification rate of the two encoding rates. CWs, in which control information is allocated. More specifically, the resource quantity determination section 204 determines the amount of resource required to allocate control information in each layer Qcw # o + cw # i based on the lowest encoding rate of the CW # 0 encoding rates and CW # 1 (fiowMCS encoding rate), according to Equation 3.

With reference to Equation 3, "O" indicates the number of bits in the control information, and "P" the number of bits for error correction added to the control information (for example, number of bits in CRC, and, in 25 some cases, P = 0), and "L" the total number of layers (layers containing CWs).
The resource quantity determination section 204, as shown in Equations 3 and 1, determines the resource quantity of the control information in each layer by multiplying the inverse (1 / ri0WMcs) of the HOWMCS encoding rate by the amount of displacement βotfsetPUSCH and then dividing the result by the total number of "L" layers.
In this way, the amount of reception required by each CW can be guaranteed in all layers. More specifically, in the layer containing CW # 0 or CW # 1 having the lowest encoding rate (i.e., CW with the AOWMCS encoding rate). the amount of Qcw # o + cw # i resource determined based on the HOWMCS encoding rate. That is, an appropriate amount of control information is used for transmission, thus ensuring that the control information allocated in that CW meets the required reception quality. In the layer containing CW # 0 or CW # 1 having the highest encoding rate, the amount of Qcvwo + cw # i resource determined based on the encoding rate fl0WMcs (that is, the encoding rate of another CW) is used to transmission, but that amount is equal to or greater than the appropriate amount of resource. Thus, the control information allocated to that CW can sufficiently meet the required reception quality.
As shown above, according to Determination Method 1, the resource quantity determination section 204 uses the CW with the lowest encoding rate of the plurality of CWs encoding rates to determine the resource quantity of the control information in each layer. In other words, the resource quantity determination section 204 uses a CW assigned to a layer in a poor transmission path environment in a plurality of CWs to determine the amount of control information resource for each layer, thus ensuring that the required reception quality is sufficiently met in all CWs, including the CW indicated for a layer in a bad transmission path environment. Thus, the base station 100 can meet the quality of reception required by all CWs (i.e., quality of reception required by the control information in an LTE system). Therefore, by combining CW # 0 and CW # 1 in the control information, the base station can ensure that the combined control information meets the required reception quality and avoids degrading the amount of reception feature of the control information. Determination Method 2
In Determination Method 2, the resource quantity determination section 204 determines the amount of resource quantity of the control information for each layer, based on the average of the inverse of the coding rates of the two CWs. More specifically, the resource quantity determination section 204 determines the amount of resource Qcw # o + cw # i of control information in each layer, according to Equation 4:
Equation 4
In Equation 4, rCw # o indicates the encoding rate of CW # 0, and rCw # i indicates the encoding rate of CW # 1.
The resource quantity determination section 204, as shown in Equations 4 and 1, determines the amount of control information resource in each layer, multiplying the inverse average (1 / rcw # o) of the rcw # o encoding rate , and the inverse (1 / rcw # i) of the rCw # i encoding rate of a displacement amount βOffsetPUSCH, and dividing the result by the total number of L layers.
A bit of the control information allocated in CW # 0 is encoded in (1 / rCw # o) bit. Similarly, a bit of the control information allocated in CW # 1 is encoded in (1 / rCw # i) bit. In other words, the average number of bits obtained by encoding a bit of the control information in each CW ((1 / rcw # o) + (1 / rcw # i) / 2) corresponds to the average number of bits appropriate to match CW # 0 and CW # 1. Thus, the average of the inverse of the CW coding rates ((1 / rcw # o) + (1 / rcw # i) / 2) is equal to the inverse of the coding rate of a combined CW obtained by combining CW # 0 and CW # 1
According to Determination Method 1 (Equation 3), the amount of resource is determined based on the lowest coding rate of the two CWs (ie, CW # 0 and CW # 1). This means that an appropriate amount of resource is determined for the layer containing CW with the lowest encoding rate between CW # 0 and CW # 1, while an amount of resource equal to or greater than an appropriate amount of resource is determined for the layer. containing the other CW (that is, the CW with the highest encoding rate) which results in wasted resources.
In contrast, according to Determination Method 2, the resource quantity determination section 204 determines the amount of control information resource in each layer, based on the inverse of the coding rate of a combined CW obtained by combining CW # 0 and CW # 1 (the average of the inverses of the coding rates CW # 0 and CW # 1).
A lower amount of resource than that determined by Determination Method 1 for the layer containing a CW with the highest encoding rate among CW # 0 and CW # 1 is determined. In other words, Determination Method 2 can reduce resource waste more than Determination Method 1, for the layer allocated to a CW with the highest encoding rate. In contrast, an amount of resource less than the appropriate amount of resource is determined for a layer allocated to a CW having the lowest encoding rate. As described above, as the resource quantity determination section 204 determines the resource quantity, so that a CW obtained by combining all CWs meets the required reception quality, the base station combines CW # 0 and CW # 1, and ensures that the combined control information meets the required reception quality.
As described above, according to Determination Method 2, the resource quantity determination section 204 determines the amount of resource required to assign control information to each layer based on the average of the inverse of the coding rates of the plurality of CWs . This avoids degradation in the quality of reception of control information, while reducing waste in the use of resources. Determination Method 3
In Determination Method 3, the resource quantity determination section 204 determines the resource quantity of the control information in each layer based on the inverse of the encoding rate of one of the two CWs and a correction factor notified from the base station 100. More specifically, the resource quantity determination section 204 determines the resource quantity Qcw # o + cw # i of the control information for each layer according to Equation 5:
Equation 5
In Equation 5, rcw # o indicates the coding rate of CW # 0 and Yoff-Set correction factor, notified from base station 100, as a control parameter.
The resource quantity determination section 204, as shown in Equations 5 and 1, determines the resource quantity of the control information in each layer, multiplying the inverse (1 / rcw # o) of the rcw # o encoding rate by one amount of displacement βOffeetPUSCH, additionally multiplying the amount of resulting resource by a Yoffset correction factor, and dividing the result by the total number of L layers.
A Yoffset correction factor notified from base station 100 is shown in figure 6. Base station 100 selects a Yoffset correction factor based on the difference in the encoding rate between two CW # 0 and CW # 1 (difference in quality of encoding rate ratio between CW # 0 and CW # 1 (reception quality ratio).
More specifically, if the encoding rate of a single CW (CW encoding rate # 0, in this case) used to determine the amount of control information resource is lower than the encoding rate of the other CW (encoding rate rcw # i of CW # 1, in this case), the base station 100 uses a Yoftse correction factor of less than 1.0 (any of the correction factors to signal #A to #C, shown in figure 6).
On the other hand, if the encoding rate of a single CW (CW # 0 encoding rate of CW # 0 in this case) used to determine the amount of control information resource is higher than the encoding rate of the another CW (rcw # i encoding rate of CW # 1 in this case), the base station 100 uses the Yotfee correction factor greater than 1.0 (one of the correction factors to signal #E and #F, shown in the figure 6).
The smaller the difference in the coding rate between CWs (difference in reception quality), the closer to 1.0 will be the Yotfeet correction factor selected by base station 100, (if there is no difference in the coding rate between CWs (ie ie, identical rates), the correction factor for signaling #D shown in figure 6 (1.0) will be selected.
The base station 100 notifies the terminal 200 of the setting information, including control parameters including the selected correction factor Yoffeet (signaling number of the correction factor Yoffeet) via upper layers.
As described above, the quantity determination section '15 of resource 204 uses a correction factor Yoffeet> adjusted according to a difference in the encoding rate (difference in reception quality) between the two CWs, to correct the quantity of resource determined in the encoding rate (inverse) of one of the two CWs. . As shown above, determining the amount of resource based on the inverse of the lowest coding rate of the coding rates of the two CWs (coding rate rcw # o of CW # 0, in this case) results in the adjustment of an amount excess resource for the other CW. (CW # 1 in this case) for example. To deal with this problem, the resource quantity determination section 204 reduces the excess resource for the other CW (CW # 1, in this case), multiplying the resource quantity determined based on the inverse of the rate lower coding by a Yoffeet correction factor of less than 1.0. Similarly, determining the amount of the resource based on the inverse of the higher coding rate of the coding rates of the two CWs results in an insufficient amount of resource for the other CW. To solve this problem, the resource quantity determination section 204 increases the resource quantity for the other CW, multiplying the determined resource quantity based on the inverse of the highest encoding rate by a value Yoftset correction factor greater than 1.0.
As described above, Equation 5 corrects the amount of recourse determined based on the CWs encoding rate (rcw # o from CW # 0, in this case) with a correction factor Yotfset according to the difference in the encoding rate between the two CWs, thus allowing the calculation of the amount of resource based on the two CWs (that is, the required reception quality of a combined CW obtained by combining the two CWs).
In other words, the resource quantity determination section 204 corrects the encoding rate (inverse) of one of the two CWs according to the difference in the encoding rate between the two CWs. More specifically, the resource quantity determination section 204, adjusts the corrected coding rate, so that the coding rate approaches the average of the coding rates of the two CWs, adopting a larger correction factor (Yotfeet) Pθra a encoding rate (i.e., inverse) of one of the two CWs in response to a greater difference in the encoding rate between the two CWs. Therefore, the inverse of the corrected coding rate Yoffset / rcw # o in Equation 5) corresponds to the average of the inverse of the coding rates of the two CWs (that is, the value to which the corrected coding rate approaches). The resource quantity determination section 204 determines the resource quantity of the control information in each layer, based on the average of the inversions of the coding rates of the two CWs (that is, the inverse of the corrected coding rate (Yoffset / rcw #o in Equation 5).
As shown above in accordance with Determination Method 3, the resource quantity determination section 204 determines the amount of resource required to allocate control information in each layer based on the inverse of a CW encoding rate and on a correction factor, adjusted according to the difference in the coding rate between the two CWs. In this way, the amount of resource with respect to the two CWs can be determined, which avoids degradation in the quality of reception of the control information, and reduces waste in the use of the resource.
According to Determination Method 3, even in the case where the encoding rate of one of the two CWs (encoding rate rcw # o of CW # 0 in Equation 5) is very low (for example, rcw # o is extremely close 0), it is possible to avoid assigning an excessive amount of resource to the control information, multiplying the amount of resource calculated based on the rCw # o coding rate by a Yoffeet correction factor adjusted according to the difference in the coding between the two CWs. This means that the correction factor can avoid over-allocation of resources.
If it is predetermined to use the lowest coding rate of the coding rates of the two CWs to determine the amount of resource Qcw # o + cw # i instead of the rcw # o coding rate of CW # 0 in Equation 5, only factors of Yoffeet correction of 1.0 or lower can be used as candidates. For example, among the candidates for correction factor Yoffeet in figure 6, only the correction factors Yoffeet to signal #A to #D can be adjusted. This provides a reduction in the amount of signaling used to notify Yoffeet-
Similarly, if it is predetermined that the highest encoding rate of the two CWs' encoding rates will be used to determine the amount of Qcw # o + cw # i resource, instead of the CW # 0 rcvwo encoding rate shown in Equation 5 , only Yoffeet correction factors of 1.0 or higher can be used as candidates. For example, among the candidates for correction factor Yoffeet in figure 6, only the correction factors Yoffeet to signal #D to #F can be adjusted. This reduces the amount of signaling used to notify Yoffeet correction factors.
A plurality of candidate tables of Yoffeet correction factors can be provided and exchanged, depending on whether the rCw # o encoding rate of CW # 0 in Equation 5 is the lowest or highest encoding rate of the two CWs encoding rates . For example, if the rcw # o coding rate of CW # 0 in Equation 5 is the lowest coding rate of the coding rates of the two CWs, a candidate table containing the Yoffset correction factors to signal #A to #D , as in figure 6, will be used. In contrast, if the rCw # o coding rate of CW # 0 in Equation 5 is the highest coding rate of the coding rates of the two CWs, a candidate table 5 containing Yoffset correction factors to signal #D to #E as in figure 6, will be used. Determination Method 4
Determination Method 4 is identical to Determination Method 3 (Equation 5) with respect to the amount of control information 10 to be calculated based on the encoding rate (inverse of one of the two CWs, except for the factor calculation method Next, Determination Method 4 will be described in detail.
As the two CWs, to which the control information is allocated 15 da, are combined in the base station 100, as described above, with a view to the "reception quality of one" of the two CWs, the reception quality is obtained "combined CW reception quality" / "reception quality of one of the two CWs" adjusted after combining the two CWs. The "reception quality of a combined CW" is achieved when the two 20 CWs are combined.
To maintain the required reception quality for all CWs, the correction factor for the amount of control information resource calculated based on the encoding rate (inverse) of one of the CWs, can be adjusted to "combined CW reception quality "/" 25 reception quality from one of the two CWs ". This ensures the quality of reception required to maintain the quality of reception required to maintain the quality of reception required by each CW which control information is allocated to the minimum amount of resource required after combining the two CWs.
In general, the following relationship between reception quality and encoding rate must be maintained: the higher the reception quality of a signal, the higher the signal encoding rate. Thus, the coding rate of one of the CWs / coding rate of the CW can be replaced by "reception quality of one of the CWs" / "reception quality of the combined CWs" as a correction factor. The combined CW encoding rate is obtained by combining two CWs.
The resource quantity determination section 204 uses Equation 6 below to adjust a Yoffset correction factor represented by the coding rate of one of the CWs (rcw # o) / coding rate of CW (coding rate of a combined CVV) (raw # o + cw # i)) - In Equation 6, the CW # 0 coding rate of CW # 0 and CW # 1 is used as the coding rate for one of the CWs .
Equation 6 In Equation 6, MCw # oscPUSCH'inrtial indicates PUSCH transmission bandwidth for CW # 0; Mcw # iscPLJSCH'iπitial indicates PUSCH CW # 1 transmission bandwidth; Ncw # osymbPUSCH'initial indicates the number of transmission symbols in PUSCH per unit of transmission bandwidth for CW # 0; and Ncw # isymbPUSCH ', nitial indicates the number of symbols per unit of transmission bandwidth in PUSCH for CW # 1. Ccw # o indicates the number of code blocks in which a data signal allocated in CW # 0 is divided ; Ccw # i indicates the number of code blocks into which a data signal allocated in CW # 1 is divided; Krcw # 0 indicates the number of bits in each code block in CW # 0; and Krcw # 1 indicates the number of bits in each code block in CW # 1. For example, if CW # 0 is assigned to two layers and assigned to 12 transmission symbols and has 12 subcarriers on each layer, the amount of CW resource # 0 (Mcw # oscPUSCH'initial-Ncw # osymbPUSCH ', nitial) will be 288 (RE). To be more precise, Mcw # oscPUSCH'initial θ equal to 12 subcarriers, and NCw # osymbPUSCH ', n, tial equal to 24 transmission symbols (two layers, each having 12 transmission symbols); Thus the amount of CW resource # 0 (Mcw # oscPUSCH- initial Ncw # osymbPUSCH'initial) is 288 (12 x 24). It should be noted that Mcw # oscPUSCH 'initial, Mcw # iscPUSCH-initial, Ncw # osymbPUSCH-initiale Ncw # isymbPUSCH'initial represent initial transmission values. PUSCH-initial M PUSCH-initial. »» PUSCH-initial M PUSCH- (Mcw # 0SC • Ncw # 0Symb + McW # 1SC Ncw # 1Symb initial) as in Equation 6, indicates the total amount of transmission resources of the respective data signals in CW # 0 and CW # 1, and (∑Krcw # 0 + ∑Krcw # 1) indicates the total number of PUSCH transmission symbols (or total number of bits in CW # 0 and CW # 1) to which respective data signals in CW # 0 and CW # 1 are designated. Thus, PUSCH-initial KI PUSCH-initial, »» PUSCH-initial »■ PUSCH- (Mcw # 0SC 'Ncw # 0Symb + MCW # 1SC Ncw # 1Symb initial) / (∑Krcw # 0 + ∑Krcw # 1), as in Equation 6, it indicates the inverse of the CW encoding rate (1 / combined CW encoding rate (rCw # o + - cw # i)) -
The resource quantity determination section 204 designates '15 the Yoffset correction factor shown in Equation 6, for example, Equation 5. The resource quantity determination section 204 determines the quantity of control information resource Qcw # o + cw # i in each layer, according to Equation 7.
Equation 7
The resource quantity determination section 204, as in Equations 7 and 1, determines the amount of control information resource in each layer, multiplying the inverse (1 / rcw # o) of the rcw # o coding rate by the amount of displacement βOffsetPUSCH to obtain a resource quantity, multiplying the resulting resource quantity by a Yoffset correction factor, and then dividing the result by the total number of L layers.
The result obtained by multiplying the inverse (1 / rcw # o) of the coding rate of one of the CWs (rcw # o) "in Equation 5 by a Yoffset correction factor shown in Equation 6 (coding rate of one of the CWs (rcw #o) / combined CW coding rate (rcw # o + cw # i) corresponds to the inverse of the coding rate of a CW obtained by combining CW # 0 and CW # 1 (coding rate of a combined CW (rcw # o + cw # i)) - In other words, the inverse of the coding rate of a combined CW (1 / coding rate of combined CW (rcw # o + cw # i)), that is the average of the inverse of the rates of The encoding of the two CWs can be obtained by correcting the inverse of the encoding rate of one of the two CWs (1 / rcw # o) with a correction factor (1 / rcw # o) (Equation 6). resource quantity 204 uses the inverse of the encoding rates of the two CWs to determine the resource quantity of the control information in each layer.
As shown in Determination Method 4, the resource quantity de-termination section 204 determines the amount of resource required to allocate control information in each layer, based on the inverse of the coding rate for one of the CWs and the factor of correction calculated based on the ratio of the quality of reception (that is, the ratio of the coding rates) between the two CWs. In other words, the resource quantity determination section 204 uses the ratio between the coding rate (reception quality) of one of the CWs and the coding rate (reception quality) of one of the combined CWs, obtained by combining the two CWs , that is, the ratio of the coding rates (that is, the reception quality ratio) between the two CWs as a correction factor. This allows the resource quantity determination section 204 to obtain the reception quality necessary to maintain the reception quality required by each CW to which the control information has been allocated in a minimum required quantity of resource. As shown, Determination Method 4 can determine the amount of resource taking into account both two CWs avoiding the degradation of the quality of reception of control information without wasting resource use.
In addition, Determination Method 4 allows terminal 200 to calculate a correction factor based on the coding rates (reception quality) of the two CWs, thus eliminating the need for base station 100 to notify terminal 200 of a correction factor, unlike Determination Method 3. More specifically, Determination Method 4 reduces the amount of signaling from base station 100 to terminal 200 relative to Determination Method 3.
In Determination Method 4, the denominator of the correction factor Yoffeet> as in Equation 6, indicates the total number of bits in CW # 0 and CW # 1. Therefore, even if the encoding rate of either CW # 0 or CW # 1 is very low (extremely small data size), the Yoffeet correction factor will be determined by considering the encoding rate of the other CW, thus preventing the designation of an excessive amount of resources for control information. Determination Method 5
If the same control information is transmitted in a plurality of layers at the same time and on the same frequency, that is, if a transmission of classification 1 is performed, the amount of resource allocated to the control information transmitted to each of the plurality of layers will be the same.
In this case, the resource quantity determination section 204 should preferably determine the amount of control information in each layer, based on the number of bits, which can be transmitted in the same amount of resource (for example, a certain number of REs (for example, a single RE)) in each layer.
More specifically, the CW # 0 rcw # o encoding rate indicates the number of bits in CW # 0 that can be transmitted using a single RE and the CW # 1 rcw # i encoding rate indicates the number of bits in CW # 1 that can be transmitted using a single RE. Assuming that the number of layers on which CW # 0 is allocated is indicated by Lcw # o θ the number of layers on which CW # 1 is allocated is indicated by Lcw # i> the number of WRE bits that can be transmitted using a single RE in all layers (Lcw # o + Lcw # i) will be obtained from Equation 8.

More specifically, Equation 8 indicates that each po layer can transmit (WRE / (LCW # O + Lcw # i)) bits of data signal using a single RE on average. Specifically, (WRE / (Lcw # o + Lcw # i)) can be used as an average of the encoding rates (that is, the number of bits that can be transmitted using a single RE) of a CW allocated to each layer. This provides the quality of reception necessary to maintain the quality of reception required by each CW to which the control information is allocated with a minimum amount of resource required after the combination of the two CWs is transmitted in a plurality of layers.
The resource quantity determination section 204 according to Equation 9 determines the resource quantity of the control information Qcw # o + cw # i in each layer, based on the inverse of the coding rates of the CWs assigned to each layer ((rCw # ox LCw # o + rCw # ix Lcw # i) / (Lcw # o + Lcw # i))

The resource quantity determination section 204, as in Equations 9 and 1, determines the resource quantity of the control information in each layer, multiplying the inverse of the average of the coding rates of the CWs assigned to each layer ((LCw # o + LCw # i) / (rcw # ox Lcw # o + rCw # ix Lcw # i by the amount of displacement βOffeetPUSCH and then dividing the result by the total number of L layers.
The average CW encoding rates assigned to each layer ((rcw # ox l-cw # o + rcw # ix Lcw # i) / (Lcw # o + i-cw # i))> as shown in Equation 9, can be represented by rCw # ox (Lcw # o / (Lcw # o + LCw # i)) + rCw # ix (Lcw # i / (Lcw # o + Lcw # i)). This indicates that the encoding rate rCw # o of CW # 0 is weighted by the proportion of the number of layers to which CW # 0 is assigned (LCw # o) across the number of layers (Lcw # o + Lcw # i), and that the encoding rate rCw # i of CW # 1 is weighted by the proportion of the number of layers to which CW # 1 is assigned (LCw # i) across the number of layers (Lcw # o + Lcw # i) -
In other words, the resource quantity determination section 204 weighs the encoding rate of each CW according to the proportion of the number of layers to which CW is assigned in all layers to which a plurality of CW is assigned. More precisely, the greater the proportion of the number of layers of CWs to which a CW is assigned, the greater the weight given to the CW encoding rate. For example, in Determination Method 2 (Equation 4, the average encoding rates for the two CWs are calculated in a simple way, and the number of layers to which each CW is assigned is not taken into account. In contrast, in Determination Method 5 (Equation 9), the average of the coding rates for a CW in all layers containing CW can be accurately calculated.
As shown above, according to Determination Method 5, the resource quantity determination section 204 determines the resource quantity of the control information in each layer, using the average number of bits, which can be transmitted in the same quantity of resource (for example, a single RE) in each layer, as the average of the CW encoding rates allocated in each layer. In this way, the amount of resource with respect to the two CWs assigned to a plurality of layers can be determined. Thus, the degradation of the quality of reception of the control information can be avoided, without wasting resource use.
As a classification 1 transmission is used for control information, the amount of resource is identical for each layer. In contrast, a transmission mode other than category 1 transmission can be used for data signals, in which case the amount of resource varies depending on the layers. In which case, the same amount of resource is assumed for each layer, and the average number of transmitable bits is calculated, as shown in Determination Method 5, which allows the calculation of an appropriate amount of resource. In other words, Determination Method 5 is applicable to data signals with different bandwidths. Supposing, for example, that in the initial transmission (that is, in a subframe 0) CW # 0 is answered with ACK, and CW # 1 with NACK, and in the retransmission (that is, in subframe 8) a new packet is assigned to CW # 0 and a retransmission packet designated for CW # 1. In this case, it may be a case where the transmission bandwidth differs between the new packet and the retransmission packet in subframe 8. In this case, the resource amount of the control information is calculated, designating the information in CW # 0 that it is initially transmitted in subframe 8, as CW # 0 information, and information in CW # 1 which was initially transmitted in subframe 0 in Equation 9, as CW # 1 information. This method allows the calculation of the amount of resource, assuming that each layer uses the same amount of resource, to transmit control information, and being effective, when the same control information in a plurality of layers is transmitted at the same time and in the same frequency, that is, when a rating 1 transmission is performed.
In addition, Determination Method 5 allows the terminal 200 to calculate the correction factor based on the encoding rates (reception quality) of two CWs, thereby eliminating the need for the base station to notify the terminal 200 of the correction factor, unlike of Determination Method 3. Thus, Determination Method 5 reduces the amount of signaling from base station 100 to terminal 200 in relation to Determination Method 3.
In Determination Method 5, the denominator of the portion corresponding to the inverse of the coding rates in Equation 9, ((Lcw # o + i-cw # i) / (rcw # ox Lcw # o + rcw # ix l-cw #i)) indicates the total number of transmitable bits using a single RE in all layers which have been designated CW # 0 and CW # 1. This avoids assigning an excessive amount of control information, since the encoding rate of the other CW is taken into account, even if any of CW # 0 and CW # 1 is a very low encoding rate (data size extremely small). Assuming that the same amount of resource is assigned to each of the layers, to which a CW is assigned, the following equations are obtained: M PUSCH-initial M PUSCH-initial_ M PUSCH-initial (0) M PUSCH-initial Mcw # 0SC 'Ncw # 0Symb “Msc Nsymb (0) I _ PUSCH-initial M PUSCH-initial_ M PUSCH-initial (l) M PUSCH- • LCW # O, θ Mcw # 1SC Ncw # 1Symb“ Msc Nsymb initial (1) -Lcw # i- MscPUSCH'in, tial (0) -NsymbPUSCH'in, tial (0) indicates an amount of data signal flow in the initial transmission for each of the layers to which CW # 0 has been assigned, and MscPUSCH'initial (1) -NsymbPUSCH'inrtial (1) indicates the amount of data signal resource in the initial transmission for each of the layers to which CW # 1 has been assigned. Equation 9 can be simplified to Equation 10, using the mentioned Equations. If Lcw # o + Lcw # i = L1 Equation 10 is equivalent to Equation 11.
Assuming that the same amount of resource is assigned to each of the layers to which a CW has been assigned AA / —Ay PUSCH-initial «u PUSCH-initiaK (W | ayer-Msc 'Nsymb), Equation 9 can be simplified to Equation 12.
Equation 14 Determination Methods 1 to 5, to determine the amount of control information resource, have been described.
The receiving section ACK / NACK and CQI 111 of the base station 100 determines the amount of control information resource (ACK / NACK or CQI signals) in the receiving signal, using a method similar to Determination Methods 1 to 5, used in the section resource quantity determination 204. Based on the resource quantity determined, the receiving section ACK / NACK and CQI 111 extracts ACK / NACK or CQI for downlink data (PDSCH signals) sent by each terminal from a channel (for example, example, PUSCH) to which uplink data signals have been assigned.
As shown above, this Modality can avoid the degradation in the quality of reception of the control information, even in the case of adopting a SU-MIMO transmission method. Mode 2 In Mode 1, the amount of control information resource is determined based on the lowest coding rate of the coding rates of the two CWs (code words) or the average of the inverses of the coding rates of the two CWs. However, in Mode 2, in addition to processing in Mode 1, the amount of control information resource is determined taking into account the difference in interference between layers for data signals and control information.
As the basic Mode of the base station and transmission of Mode 2 is the same as that of Mode 1, figures 4 and 5 will be used to describe Mode 2.
In addition to the process similar to that of Mode 1, adjustment section 101 (figure 4) on base station 100 according to Mode 2 adjusts the correction factor (αOffeet (L)).
In addition to the process similar to that of Modality 1, the receiving section ACK / NACK and CQI 111 determines the amount of resource using the correction factor (αOffset (L)) received from adjustment section 101.
However, the resource quantity determination section 204 at terminal 200 under Mode 2 (figure 5) uses correction factor (Ooffset O notified by base station 100 to determine the amount of resource. (Base Station 100 and Terminal Operations 200) The operations of base station 100 and terminal 200 having the above mentioned Modalities will be described below.
If the number of layers of the classification number for control information is equal to the number of layers or the number of classification of data signals, the same interlayer interference occurs between data signals and control information. For example, if a spatial multiplexing is performed with CW # 0, to which the control information is allocated, and which is assigned to layer # 0 and CW # 1 containing data signals assigned to layer # 1, a transmission of classification 2 will be performed for data signals and control information, causing interlayer interference at the same level.
Alternatively, if the classification number differs between the control information and the data signals, a different interlayer interference occurs between data signals and control information. If the same control information is allocated to CW # 0 and CW # 1 and transmitted in layers # 0 and # 1, that is, if the transmission of classification 1 is carried out, less interlayer interference should occur in relation to the situation in which signals different are allocated in CW # 0 and CW # 1 and transmitted in layers # 0 and # 1.
In this regard, the resource amount determination section 204 increases or decreases the amount of resource calculated with the above equation (for example, Equation 1), depending on the number of the classification or the number of layers for signals of data and control information.
More specifically, the resource quantity determination section 204, as in Equation 15, calculates the resource quantity Qcw # o + cw # i by determining the resource quantity of the control information in each layer, based on the encoding rate of one of the CWs (CW # 0 or CW # 1) or encoding rates for both CWs using Equation 1, multiplying the amount of resource determined by the correction factor βoffeet (L), which depends on the number of classifications or the number of layers, and then dividing the result of the multiplication by the total number of L layers.

In Equation 15, αOffset (L) represents a correction factor, which depends on the number of layers or the number of classifications for data signals and control information.
For example, if the number of classifications or number of layers of data signals is greater than that of the control information, the correction factor αOffSet (L), as in figure 7, implicitly decreases, as the difference in the number of data increases. classification or number of layers between data signals and control information. As the difference in the number of classifications or number of layers between data signals and control information decreases, the correction factor approaches 1.0.
Alternatively, if the number of classification or number of layers for data signals is less than that of the control information, the correction factor αOffset (L), as in figure 8, implicitly increases, as the difference in the number of classifications increases. or number of layers between data signals and control information.
Interlayer interference depends on channel variations (channel matrix); so interlayer interference varies, even if the number of classifications and or number of layers is identical, which means that proper correction is difficult using an adjusted value. To address this problem, a plurality of aOffeet correction factors shared between base station 100 and terminal 200 is provided on each layer, to allow base station 100 to select one of the correction factors and notify terminal 200 via upper layers or PDCCH . Terminal 200 receives aOffset correction factor from base station 10, and uses this correction factor to calculate the amount of resource, as in Determination Method 6. Base station 100 can report the amount of displacement βOffcetPUSCH to each layer (or each classification).
The amount of resource can be adjusted taking into account the difference in interlayer interference between data signals and control information. Thus, the degradation of information can be avoided by increasing the control information, and reducing the misuse of resources.
Since interlayer interference depends on channel variations (channel matrix), the upper layers cannot change channels frequently. To deal with frequent channel variations, the presence or absence of a correction factor can be reported using a bit in a physical downlink control channel (PDCCH) message having a shorter notification interval than upper layers. The PDCCH message is carried in each subframe, thereby facilitating flexible change. In addition, the use of a bit in PDCCH to direct the change between use or non-use of correction factor, reduces the amount of signaling.
The correction factor mentioned above has a variable adjustment value, depending on the control information ACK / NACK and CQIs signals and similar, but a common notification (notification using common adjustment value) can be used for control information (ACK / NACK signals) NACK and CQIs and / or similar). For example, if a setpoint 1 is transmitted to a terminal, the terminal selects a correction factor for ACK / NACK signals, which correspond to setpoint 1 and a correction factor for CQIs that corresponds to setpoint 1. This allows you to notify using a single adjustment value for a plurality of parts of the control information, thereby reducing the amount of signaling to notify a correction factor.
In this modality, the correction factor is increased or decreased depending on the number of classifications or the number of layers for data signals and control information, but once the number of layers and the number of classifications closely related to CWs, the correction can be increased or decreased, depending on the number of CWs containing data signals and control information. In addition, the correction factor may change, depending on whether the number of classifications, number of layers, or number of CWs for data signals and control information is equal to or greater than 1. Mode 3 Mode 1 assumes that the number of layers be identical for initial transmission and retransmission. In contrast, in Mode 3, the amount of control information resource is determined by considering the difference in the number of layers between the initial transmission and re-transmission in the Mode 1 process.
As the basic Mode of the base station and terminal, according to Mode 1, is the same as that of Mode 1, figures 4 and 5 are also used to describe Mode 3.
The receiving section ACK / NACK and CQI 111 at base station 100 according to Mode 3 (figure 4) performs a similar processing to that of Mode 1, and calculates the amount of resource required to allocate control information based on the number of layers in the initial transmission or retransmission. The reception section ACK / NACK and CQI 111 in Modality 3 differs from that of Equation 1 with respect to the fact that the equation for calculating the amount of resource of the control information is expanded.
However, the resource quantity determination section 204 at terminal 200 according to Mode 3 (figure 5) performs a process similar to that of Mode 1, and calculates the amount of resource required to allocate control information based on the number of layers in the initial transmission or retransmission in Mode 3 differs from that of Mode 1 with respect to the fact that the equation for calculating the amount of resource of the control information is expanded. (Base Station 100 and Terminal 200 operations)
The operations of the base station 100 and terminal 200 having the Modes, mentioned above, will be described. Determination Method 7 Determination Methods 1 to 6 assume that the number of layers is identical between initial transmission and retransmission. In the initial transmission, a reception quality equal to or greater than a certain level (required reception quality) can be achieved for control information, by adjusting the amount of control information resource using, for example, Equation 9 ( Determination 5).
Since Determination Methods 1 to 6 (for example, Equation 9) assume that the amount of control information resource is already identical for each layer between initial transmission and retransmission, the total amount of control information resource in the the number of layers also decreases, due to a reduction in the number of layers, when the number of layers changes in the retransmission (for example, it decreases).
This results in the degradation of the quality of reception of the control information in the retransmission in relation to that of the initial transmission (for example, see figure 9). For example, as in figure 9, if the allocation notification information (UL grant) is used to change the number of layers from four (in the initial transmission) to two (in the retransmission), the amount of resource of the data signals decreases , and thus the amount of total resource control information (ie, ACK / NACK signals) also decreases at all layers.
The resource quantity determination section 204 resets the amount of control information resource in the retransmission with '15 based on the number of layers with which each CW is allocated in the retransmission. More specifically, in retransmission, the resource quantity determination section 204 does not use the resource quantity per layer, which was calculated in the initial transmission, and instead designates the number of layers with which each CW is allocated in the retransmission ( that is, current number) in Equation 9, to recalculate the amount of resource per layer in the retransmission (that is, current amount). For information other than the number of layers (ie „MCw # oscPUSCK'inítial, Mcw # iscPUSCH'initial, Ncw» sw, bPUSCH * "al. Ncw # isymbPUS0IWnttial> ∑Krcvw0 and ∑K, CV *), is used numerical value used in the initial transmission, adjusted to meet a certain error rate requirement (for example 10%). More specifically, taking into account LCw # o + Lcw # i, Equation 9 in the retransmission (that is, current ) can be transformed into Equation 16.
Lcw # ocurrent θ Lcw # icurrent indicate the number of layers to which CW # 0 and CW # 1 are assigned in the retransmission (that is, current), respectively, and Lcw # oinitial θ LCw # iinitial indicate the number of layers to which CW # 1 and CW # 1 are designated in the initial transmission, respectively. Once Determination Methods 1 through 6 assume that the number of layers is identical between the initial transmission and retransmission, the number of layers is not considered in the initial transmission and retransmission. Then, the number of layers used in Determination Methods 1 to 6 represents information in the initial transmission, such as the number of bits in each CW and / or the amount of resource in each CW. Equation 16 is obtained by multiplying each term in the denominator of Equation 9 by the ratio of the number of layers in the retransmission to that of the initial transmission (ie, Lcw # ocurrent / LCw # oinit, al, ■ current /) initials Lcw # 1 / Lcw # 1) ■ Equation 17 is obtained from Equations 16 and 11.
Equation 19 indicates that if the number of layers to transmit data signals decreases, the amount of control information per layer will increase. This means that the amount of total layers of resource containing control information is almost identical (that is, the number of layers containing control information in relation to the amount of control information resources per layer is almost identical) between the initial transmission and retransmission, hence obtaining a reception quality equal to or better than a certain level (reception quality required) for control information even during retransmission (see figure 10).
This allows the amount of control information resource to be adjusted considering the number of layers in the retransmission (current), even if the number of layers transmitting data signals is different between initial transmission and retransmission. Thus, the degradation of the quality of reception of control information can be avoided, without wasting the use of resources. If the ratio of the number of layers in the retransmission to that of the initial transmission (that is, the number of layers in the retransmission the number of layers in the initial transmission) is 1 / A (A an integer) for both, CW # 0 and CW # 1, Equation 18 is below can be replaced by Equation 17.
Linitiale | _current jn (jjcam the total number of layers in the initial transmission and retransmission, respectively. Unless the above mentioned condition is met (number of layers in the retransmission: number of layers in the initial transmission = 1 / A), the amount of resource of the control information can be either excessive or insufficient, which results in a waste of resource use or low quality.If the probability of not meeting the above condition is low, or if the system is designed to prevent such occurrence, the resource quantity determination section 204 can use Equation 18 to calculate the resource quantity of control information.
The case in which the amount of total resource (for example, the number of layers) in the retransmission is reduced in relation to that of the initial transmission has been described above. The amount of total resource (for example, the number of layers) in the retransmission may increase in relation to that of the initial transmission. In this case, the resource quantity determination section 204 may use Equation 16, 17, or 18 to avoid assigning an excessive amount of resource to control information.
The number of layers can be replaced by the number of antenna ports. For example, the number of layers in the initial transmission in the description above (that is, four layers in figure 10) is replaced by the number of antenna ports (four ports in figure 10), the number of layers in the retransmission (current) (two layers in figure 10) is replaced by the number of antenna ports in the retransmission (current) (two ports in figure 10) and the total number of layers is replaced by the total number of antenna ports. In other words, the resource quantity determination section 204 replaces the number of layers in Equation 16, 17, or 18 with the number of antenna ports, to calculate the resource quantity of the control information.
It should be noted that the number of layers is defined as the number of antenna ports through which different signaling sequences are transmitted, the number of layers is not always identical to the number of antenna ports. For example, when a classification 1 transmission is carried out through four antenna ports, the number of layers is one, as long as the same signaling sequence is transmitted through four antenna ports. In this case, if a four-layer transmission is performed using four antenna ports in the initial transmission, while a one-layer transmission (rating 1 transmission) is performed using four antenna ports in the retransmission, the amount of control information resource it does not need to be corrected. In contrast, if a four-layer transmission is performed using four antenna ports in the initial transmission, while a one-layer transmission (using one layer) is performed using an antenna port in the retransmission, the amount of resource control information needs be corrected.
If the number of antenna ports used for retransmission decreases, the transmission power per antenna port is increased to compensate for the reduction, thereby avoiding the correction of the amount of control information resources. For example, if the number of antenna ports is reduced from four to two, the transmission power per antenna port can be increased by 3 dB (ie, doubled), and if the number of antenna ports is reduced by four for one, the transmission power per antenna port 5 can be increased by 6 dB (ie, quadrupled).
If a pre-coding vector (or matrix) is used, in which the number of antenna ports used in the retransmission is identical to that of the initial transmission, Equation 0 or 14, for example, can be used. If a pre-coding vector (or matrix) is used, in which the number of antenna ports 10 used in the retransmission is different from that of the initial transmission, for example, the number of layers in Equation 16, 17, or 18 can be used with the number of layers replaced by the number of antenna ports.
Equations 16 and 17 can be applicable to a case in which * 15 one of the CWs is answered with ACK, and the other CW is answered with NACK, decreasing the number of CWs. More specifically, if CW # 0 is answered with ACK / NACK, and CW # 1 is answered with NACK in the initial transmission, and only CW # 1 is retransmitted, LCw # ocurrent = 0 is assigned to Equation 16 or 17, and the amount control information resource is calculated by 20 Equation 19. Equation 19 indicates a case where only CW # 1 is answered with NACK but, if only CW # 0 is answered with NACK, CW # 1 information in Equation 19 can be replaced with CW # 0 information.

If signals are transmitted in two CWs, Equation 11 or 14 can be used. If signals are transmitted in a single CW, Equation 19 can be used as exception processing. For example, if a four-port antenna transmission is performed using two CWs in the initial transmission, and if a two-port antenna transmission is performed using a single CW in the retransmission, Equation 19 will be used in the retransmission. In the fallback mode used when the reception quality suffers an extreme degradation, for example, a transmission from an antenna port can be performed using a single CW in the retransmission, in which case Equation 19 can be used as processing of exception. Equation 19 can incorporate a correction value as in Equation 20.
Equation 20 W in Equation 20 indicates a correction factor. The correction value W can be determined based on the number of layers (or number of antenna ports) for CW # 0 or CW # 1 in an initial transmission and retransmission. For example, the correction value W in the second equation is the ratio between the number of antenna ports to which CW # 0 or CW # 1 is assigned in the retransmission and the number of antenna ports to which CW # 0 or CW # 1 is assigned. is designated in the initial transmission. The correction value W can be included in the amount of offsetβOffsetPUSCH- For example, the amount of offsetβOffeetPUSCH is determined based on the number of layers (or number of antenna ports) for CW # 0 and CW # 1 in the initial transmission and in retransmission.
The case is described in which the calculation of the amount of resource in the retransmission using CW information used in the initial transmission. One reason for calculating the amount of resource in the retransmission using CW information used in the initial transmission is that the data signal error rate in the retransmission cannot be adjusted to a fixed value, such as 10%. More specifically, in the initial transmission, the base station allocates resources to each terminal, so that the data signal error rate is 10%, while, in retransmission, the base station probably assigns a smaller amount of resource to the data signals. than in the initial transmission, since it is sufficient, provided an improvement in the initial data signal error rate has been provided. In other words, in the equation that calculates the quality of reception of control information (ie, MscPUSCH 'retransmission, NsymbPuscH-retransmission) in retransmission, a reduction in the amount of control information resource results, which causes degradation of the quality of control. receiving control information. To deal with this problem, the information in the initial transmission is used to determine the amount of resource, hence keeping the reception quality equal to or better than a certain level (ie, required reception quality) for 10 control information. It should be noted that ∑Kr „∑Krcw # 0, and ∑Krcw # 1 are identical in the initial transmission and retransmission.
Even if a data error rate is set to 10% (0.1) in the initial transmission, the data signal error rate may exceed 10%, due to the retransmission delay (ie, error rate may additionally ' 15 increase). To solve this problem, the correction value (K) should preferably be multiplied, when the amount of resource in the retransmission is determined. For example, as in Equation 21, the ratio between the number of layers for each CW in the initial transmission (LCw # o'nitial, LCw # i'n, t'al) and the number of layers for each CW in the retransmission (LCw #ocurrent, LCw # icurrent) can be multiplied by a correction value specifically for the term generated for each CW (Kcw # o, Kcw # i). Alternatively, as in Equation 22, the ratio between the number of layers (Linrtial) in the initial transmission and the number of layers (| _current) in the retransmission can be multiplied by the correction value (K). The correction values are not limited to the examples above, and one or more time delays can be multiplied by a correction value.


Unlike Determination Methods 1 to 7, a restriction that the same number of layers as those in the initial transmission 5 must always be used in retransmission can be imposed. For example, changing the number of I number of layers for each CW in the retransmission with allocation information (UL grant) or similar may be prohibited. ACK / NACKs can be transmitted in the same number of layers as the initial transmission, even if you increase or decrease the number of layers for each CW.
The Modalities of the present invention have been described above. Other Modalities (1) The MIMO transmission mode, in the Modalities mentioned above, can be a transmission mode 3 or 4, as established in LTE, that is, a transmission mode that supports transmission of two CWs, and the transmission mode. Non-MIMO transmission can be any other mode of transmission, that is, a mode of transmission in which only a single CW is transmitted. The description of the Modes mentioned above assumed MIMO mode using a plurality of CWs and non-MIMO mode using a single CW. More specifically, as described above, the above description has been provided by assuming signals transmitted in a plurality of layers (plurality of classifications), in the transmission mode MIMO, and signals transmitted in a single layer (or single classification), in the transmission mode not -MIMO. The mode of transmission, however, is not limited to these examples; signals can also be transmitted via a plurality of antenna ports, in the MIMO transmission mode (for example, SU-MIMO transmission), and signals can be transmitted via a single antenna port, in the non-MIMO transmission mode.
The code words in the above mentioned Modalities can be replaced by transport blocks (TB). (2) Modes mentioned above ACK / NACKs and CQIs are used as examples of control information, but the control information is not limited to the information. Any information (control information) that requires a higher reception quality than data signals is applicable. For example, CQIs or ACK / NACKs can be replaced with PMIs (information regarding pre-coding) and / or RI (that is, information regarding ratings).
The term "layer", in the Modes mentioned above, refers to a trajectory of virtual transmission in space. For example, in MIMO transmission, data signals generated in each CW are transmitted in different virtual transmission paths (that is, different layers) in space at the same time and on the same frequency. The term "ca- '15 mada" can also be called "flow". (4) In the aforementioned Modalities, a terminal that determines the amount of control information resource based on the difference between the coding rates of the two CWs, to which the control information is allocated (coding rate ratio) has been described . A difference in MSS between two CWs (or MCS ratio) can be used, instead of a difference between the encoding rates of the two CWs, to which the control information is allocated (or encoding rate ratio). Alternatively, a combination of encoding rate and modulation method can be used as the encoding rate. (5) The aforementioned amount of displacement can be called "correction factor", and the correction factor can be called "amount of displacement". Any two or three of the correction factors and displacement quantities (αOffcet (L)> βoffeetPUSCH and Yoftset) used in the aforementioned Modalities can be combined into a correction or displacement factor. (6) In the aforementioned Modalities, the description was provided with antennas, but the present invention applies in the same way to antenna ports.
The antenna port refers to a logical antenna, composed of one or more physical antennas. Thus, the antenna port does not necessarily refer to a physical antenna, it can refer to an array of antennas composed of a plurality of antennas,
For example, in 3GPP LTE, the number of physical antennas included in the antenna port is not specified, but an antenna port is specified as the minimum unit, which allows the base station to transmit a different reference signal.
In addition, the antenna port can be specified as a minimum unit in multiplying a weight in the precoding vector.
The number of layers can be defined as the number of different data signals transmitted concurrently in space. In addition, the layer can be defined as a signal transmitted by an antenna port associated with data signals or reference signals (or as their communication path in space). For example, a vector used for weight control (pre-coding vector), which has been studied for pilot signals of LTE-A uplink demodulation, has a one-to-one relationship with a layer. (7) The aforementioned Modalities have been described taking an example of the present invention, implemented by hardware, but the invention can also be implemented by software cooperatively with hardware.
Functional blocks used to describe the Modes mentioned above are typically achieved by LSIs, which are integrated circuits. Integrated circuits can be implemented individually on separate chips, and part of the integrated circuit or all of it can be called here LSI or ICs, LSI system, super LSIs, or ultra LSI, depending on the degree of integration.
Methods for making integrated circuits are not limited to LSI, and dedicated circuits or general purpose processors can be used to implement them. After LSI production, field programmable port arrangement or reconfigurable processors that allow connection or adjustment of circuit cells within the LSI can be used.
If advances in semiconductor technology or other derived technologies give rise to a new integrated circuit 5 manufacturing technology that replaces LSI, obviously, the new technology could come to be used to integrate function blocks, whereas biotechnology is also applicable.
The description of the specifications, drawings, and summary in Japanese Patent Applications No. 2010-140751, filed on June 21, 2010, and No. 2010-221392, filed on September 30, 2010, is incorporated in this by reference. Industrial Application
The present invention is useful in mobile and / or similar communication systems. 15 Reference List 100 Base Station 200 Terminal 101 Setting Section 102, 103 Coding and Modulation Section 104,205 Transmitting Signal Generation Section 105, 206 Transmitting Section 106, 201 Antenna 107, 202 Receiving Section 108, 208 Receiving Section radio processing 109, 203 Receiving processing section 110 Data receiving section 111 ACK / NACK and CQI receiving section 204 Resource quantity determination section 207 Transmission processing section

权利要求:
Claims (12)
[0001]
1. Terminal apparatus (200) that transmits control information in a plurality of layers, the apparatus being characterized by the fact that it comprises: a determination section (204) that determines a quantity of control information resource in the plurality of layers; and a transmission section (206) that transmits control information based on the amount of control information resource, where the QCW # 0 + CW # 1 amount of control information is determined by Equation 1:
[0002]
2. Terminal apparatus according to claim 1, characterized by the fact that P is zero.
[0003]
3. Terminal apparatus according to claim 1, characterized by the fact that L is the sum of LCW # 0 and LCW # 1.
[0004]
4. Terminal apparatus according to claim 1, characterized by the fact that the product MCW # 0SCPUSCH-initial and NCW # 0symbPUSCH-initial is a product of MCW # 0SCPUSCH-initial, LCW # 0 and the number of symbols transmission in each layer for code word # 0, and an MCW product # 1SCPUSCH-initial and NCW # 1symbPUSCH-initial is an MCW product # 1SCPUSCH-initial, LCW # 1 and the number of symbols in each layer transmission for the code word #1.
[0005]
5. Terminal device according to claim 1, characterized by the fact that the control information is a negative confirmation / confirmation signal (ACK / NACK).
[0006]
6. Base station apparatus (100) which receives control information in a plurality of layers, the apparatus being characterized by the fact that it comprises: a receiving section (107) which receives a signal including control information; and a control information extraction section (111) that de-terminates an amount of control information resource in the plurality of layers, and extracts the control information from the received signal based on the amount of control information resource, where the amount of QCW # 0 + CW # 1 resource of control information is determined by Equation 1
[0007]
7. Base station according to claim 6, characterized by the fact that P is zero.
[0008]
8. Base station according to claim 6, characterized by the fact that L is the sum of LCW # 0 and LCW # 1.
[0009]
9. Base station according to claim 6, characterized by the fact that the product MCW # 0SCPUSCH-initial and NCW # 0symbPUSCH-initial is a product of MCW # 0SCPUSCH-initial, LCW # 0 and the number of transmission symbols in each layer for code word # 0, and an MCW product # 1SCPUSCH-initial and NCW # 1symbPUSCH-initial is an MCW product # 1SCPUSCH-initial, LCW # 1, and the number of sim-cakes in each layer transmitted to the word code # 1.
[0010]
10. Base station according to claim 6, characterized by the fact that the control information is a negative confirmation / confirmation signal (ACK / NACK).
[0011]
11. Transmission method for transmitting control information in a plurality of layers, the method being characterized by the fact that it comprises: determining a quantity of control information resource in the plurality of layers; and transmit the control information based on the resource amount of the control information, where the amount of QCW resource # 0 + CW # 1 of the control information is determined by Equation 1:
[0012]
12. Reception method for receiving control information in a plurality of layers, the method being characterized by the fact that it comprises: receiving a signal containing control information; determining an amount of control information resource in the plurality of layers; and extract the control information from the received signal based on the amount of resource from the control information, where the amount of resource QCW # 0 + CW # 1 from the control information is determined by Equation 1: Equation 1 where "O" indicates the number of bits in the control information, "P" indicates the number of error correction bits added to the control information, β offsetPUSCH indicates the amount of offset, and "L" indicates the number 5 of the plurality of layers; LCW # 0 and LCW # 1 each indicates the number of layers assigned to corresponding one of the code words # 0 and # 1; MCW # 0SCPUSCH-initial and MCW # 1SCPUSCH-initial indicate physical uplink shared channel transmission bandwidths (PUSCH) for code words # 0 and # 1 respectively; NCW # 0symbPUSCH-initial and NCW # 1symbPUSCH- 10 initial, each of which indicates the number of transmission symbols for the corresponding one of the code words # 0 and # 1; KrCW # 0 and KrCW # 1 each indicates the number of bits in each code block r for the corresponding one of the code words # 0 and # 1; and CCW # 0 and CCW # 1 each indicate the number of code blocks 15 in which a data signal in the corresponding one of the code words # 0 and # 1 is divided.

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法律状态:
2017-05-30| B25A| Requested transfer of rights approved|Owner name: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AME |

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2017-06-27| B25A| Requested transfer of rights approved|Owner name: SUN PATENT TRUST (US) |

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2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

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2020-04-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|

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2020-04-28| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04W 28/06 , H04B 7/04 , H04J 11/00 , H04J 99/00 Ipc: H04W 28/06 (2009.01), H04W 72/04 (2009.01), H04W 7 |

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2020-08-11| B06G| Technical and formal requirements: other requirements|

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2020-12-08| B09A| Decision: intention to grant|

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2021-02-09| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/06/2011, 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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JP2010140751|2010-06-21|

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JP2010-140751|2010-06-21|

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JP2010-221392|2010-09-30|

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JP2010221392|2010-09-30|

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PCT/JP2011/003198|WO2011161887A1|2010-06-21|2011-06-07|Terminal apparatus and communication method thereof|

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