技术领域technical field
本发明涉及上行控制信息目标长度确定技术,特别涉及高级长期演进(LTE-A,LongTermEvolution-Advance)系统中上行多天线下上行控制信息(UCI,UplinkControlInformation)在物理上行业务共享信道(PUSCH,PhysicalUplinkSharedChannel)上传输时目标长度的确定方法及装置。The present invention relates to a technology for determining the target length of uplink control information, in particular to uplink multi-antenna uplink control information (UCI, UplinkControl Information) in a physical uplink service shared channel (PUSCH, PhysicalUplinkSharedChannel) in an advanced long-term evolution (LTE-A, LongTermEvolution-Advance) system A method and device for determining a target length during uplink transmission.
背景技术Background technique
在长期演进(LTE,LongTermEvolution)系统中,上行控制信息UCI主要包括信道质量指示信息(CQI,ChannelQualityIndication)/预编码矩阵指示信息(PMI,PrecodedMatrixIndication)、正确/错误应答信息(ACK/NACK,Acknowledgement/NegativeAcknowledgement)和秩指示(RI,RankIndication)信息。对于上行控制信息的反馈可以基于物理层上行控制信道(PUCCH,PhysicalUplinkControlInformation)和PUSCH进行。图1为LTE系统中控制信息和业务信息的交织复用方式示意图,如图1所示,其中UCI在PUSCH反馈时,如果用户终端有业务信息发送,则UCI与业务信息按照图1所示的复用方式反馈,具体的,ACK/NACK分布在上行解调导频(DMRS,DemodulationReferenceSymbol)的两边的四个单载波-频分多址(SC-FDMA,SingleCarrier-FrequencyDivisionMultiplexingAccess)符号两边,RI进一步分布在ACK的两边,而CQI/PMI和业务信息级联后分布在除RI和ACK/NACK外的所有可用PUSCH资源上;如果用户终端没有业务信息发送,则仅有UCI信息在PUSCH上反馈,此时ACK/NACK和RI的复用位置与图1所示完全相同,CQI/PMI信息占用除ACK/NACK和RI外的所有可用PUSCH资源。In the Long Term Evolution (LTE, LongTermEvolution) system, the uplink control information UCI mainly includes channel quality indication information (CQI, ChannelQualityIndication)/precoding matrix indication information (PMI, PrecodedMatrixIndication), correct/error response information (ACK/NACK, Acknowledgment/ NegativeAcknowledgment) and rank indication (RI, RankIndication) information. Feedback on uplink control information can be performed based on a physical layer uplink control channel (PUCCH, PhysicalUplinkControlInformation) and PUSCH. Figure 1 is a schematic diagram of the interleaving and multiplexing of control information and service information in the LTE system, as shown in Figure 1, wherein when UCI is fed back on the PUSCH, if the user terminal has service information to send, the UCI and service information are transmitted according to the method shown in Figure 1 Multiplexing mode feedback, specifically, ACK/NACK is distributed on both sides of the four single carrier-frequency division multiple access (SC-FDMA, SingleCarrier-FrequencyDivisionMultiplexingAccess) symbols on both sides of the uplink demodulation pilot (DMRS, DemodulationReferenceSymbol), and RI is further distributed On both sides of ACK, CQI/PMI and service information are concatenated and distributed on all available PUSCH resources except RI and ACK/NACK; if the user terminal has no service information to send, only UCI information is fed back on PUSCH. When the multiplexing position of ACK/NACK and RI is exactly the same as that shown in Figure 1, the CQI/PMI information occupies all available PUSCH resources except ACK/NACK and RI.
UCI在PUSCH上传输时,不同UCI信息在PUSCH上占用的资源单元(RE,ResourceElement)个数也就是不同UCI编码后的目标调制符号个数,基于不同UCI信息的性能要求,业务信息的码率和图1所示的复用方式中UCI信息最大所能占用的资源而考虑,当前LTERel-8中给出了不同UCI在PUSCH传输时其编码后调制符号个数的计算方法,且该计算方法根据是否有业务信息发送而不同:When UCI is transmitted on PUSCH, the number of resource elements (RE, ResourceElement) occupied by different UCI information on PUSCH is the number of target modulation symbols encoded by different UCI. Based on the performance requirements of different UCI information, the code rate of service information In consideration of the maximum resources that UCI information can occupy in the multiplexing mode shown in Figure 1, the current LTERel-8 provides a calculation method for the number of encoded modulation symbols of different UCIs during PUSCH transmission, and the calculation method It varies according to whether there is business information to send:
(1)UCI与业务信息复用在PUSCH上(1) UCI and service information are multiplexed on PUSCH
对于ACK/NACK或RI信息,其编码后的目标调制符号个数由下式确定:For ACK/NACK or RI information, the number of encoded target modulation symbols is determined by the following formula:
上述公式(1)中O表示初始ACK/NACK或者RI信息比特,表示当前子帧用于PUSCH传输的带宽,以载波个数表示,表示初始PUSCH传输中用于除了导频(包括DMRS和SRS)外的SC-FDM符号个数。C、Kr和从初始的PDCCH中获得。其中,C表示根据初始PDCCH获取的相同传输块经循环冗余校验(CRC,CyclicRedundancyCheck)和码块分割后对应的码块个数,Kr表示每个码块对应的比特数,而表示根据初始PDCCH获得的对应带宽信息,以载波个数表示。当没有初始的下行控制信息(DCI,DownlinkControlInformation)格式0的PDCCH时,C、Kr可以通过下面两种方式获取:(1)当初始PSUCH采用半静态调度时,可以从最近的半静态调度配置的PDCCH获取;(2)当PUSCH由随机接入响应授权触发,则从相同传输块对应的随机接入响应授权获取。O in the above formula (1) represents the initial ACK/NACK or RI information bit, Indicates the bandwidth used for PUSCH transmission in the current subframe, expressed in the number of carriers, Indicates the number of SC-FDM symbols used in initial PUSCH transmission except for pilots (including DMRS and SRS). C, Kr and Obtained from the original PDCCH. Among them, C represents the number of code blocks corresponding to the same transmission block obtained according to the initial PDCCH after cyclic redundancy check (CRC, CyclicRedundancyCheck) and code block division, Kr represents the number of bits corresponding to each code block, and Indicates the corresponding bandwidth information obtained according to the initial PDCCH, expressed in the number of carriers. When there is no initial downlink control information (DCI, DownlinkControlInformation) format 0 PDCCH, C, Kr can be obtained in the following two ways: (1) When the initial PSUCH adopts semi-persistent scheduling, it can be obtained from the PDCCH configured for semi-persistent scheduling; (2) When the PUSCH is triggered by a random access response grant, then Grant acquisition from the corresponding random access response of the same transport block.
对于公式(1)中其分子表示初始PUSCH可用的最大资源,以RE个数来表示,分母表示编码前业务信息的比特个数。考虑到业务信息和UCI的传输质量要求不一样,因此,该公式中可以通过添加提高UCI的传输质量。表示ACK/NACK或者RI相对于CQI的码率偏置,即表示或该值由高层采用无线资源控制(RRC,RadioResourceControl)配置,同时考虑到ACK/RI只能占用每个子帧的4个SC-FDMA符号上,因此Q′应小于For formula (1) in Its numerator represents the maximum resource available for the initial PUSCH, represented by the number of REs, and the denominator represents the number of bits of service information before coding. Considering that the transmission quality requirements of business information and UCI are different, therefore, the formula can be added by adding Improve the transmission quality of UCI. Indicates the code rate offset of ACK/NACK or RI relative to CQI, that is express or This value is configured by the high layer using radio resource control (RRC, RadioResourceControl), and considering that ACK/RI can only occupy 4 SC-FDMA symbols of each subframe, so Q' should be less than
对于CQI,由于其交织复用方式与ACK不同,其编码后的调制符号个数由下式确定:For CQI, since its interleaving and multiplexing method is different from that of ACK, the number of coded modulation symbols is determined by the following formula:
该公式前半部分跟前面分析的公式(1)完全一样,其中L的取值根据CQI/PMI的初始比特大小O而不同,如果O小于等于11,则L=0,否者L=8。此外,为由RRC层配置,同时考虑到CQI的复用方式与ACK/NACK和RI不同,CQI最大的调制符号个数为所有可用的RE中去掉RI占用的资源,因此其最大值为其中,表示当前子帧用于PUSCH传输的载波数量,为当前PUSCH传输中用于除导频外的SC-FDM符号数量,为秩指示信息占用的比特数。The first half of the formula is exactly the same as the previously analyzed formula (1), wherein the value of L is different according to the initial bit size O of CQI/PMI, if O is less than or equal to 11, then L=0, otherwise L=8. also, for It is configured by the RRC layer, and considering that the multiplexing method of CQI is different from that of ACK/NACK and RI, the maximum number of modulation symbols of CQI is the resource occupied by RI in all available REs, so its maximum value is in, Indicates the number of carriers used for PUSCH transmission in the current subframe, is the number of SC-FDM symbols used in the current PUSCH transmission except for the pilot, The number of bits occupied by rank indication information.
(2)仅有UCI在PUSCH上传输(2) Only UCI is transmitted on PUSCH
当PUSCH仅承载UCI时,由于没有业务信息,因此CQI占用除RI外的所有资源,因此其编码后的调制符号个数为:When PUSCH only carries UCI, since there is no service information, CQI occupies all resources except RI, so the number of encoded modulation symbols is:
这时,ACK/RI编码后的调制符号为:At this time, the modulation symbol after ACK/RI encoding is:
其中OCQI-MIN表示添加CRC后的初始CQI信息比特个数,表示当前PUSCH最大可用RE个数,O表示ACK或者RI的原始信息比特。此处,表示ACK/NACK或者RI相对于CQI的码率偏置,如对于ACK有:同样由于ACK或者RI仅占用四个SC-FDMA符号,因此Q′最大值为Where OCQI-MIN represents the number of initial CQI information bits after adding CRC, Indicates the maximum number of available REs for the current PUSCH, and O indicates the original information bits of ACK or RI. here, Indicates the code rate offset of ACK/NACK or RI relative to CQI, such as for ACK: Also because ACK or RI only occupies four SC-FDMA symbols, the maximum value of Q′ is
在LTERel-8中上行仅支持单天线传输,因此上行传输仅有一个码字流,并且仅有一个层,然而LTE-A系统中上行可以采用多天线传输,这样上行传输就存在多流或者多层传输,进一步的会存在单个码字流映射到两个层上传输的情况。In LTE Rel-8, the uplink only supports single-antenna transmission, so the uplink transmission has only one codeword stream and only one layer. layer transmission, further there may be a case where a single codeword stream is mapped to two layers for transmission.
前述的UCI信息在PUSCH传输是针对单个码字流来进行,这样当存在单个码字流映射到两层传输时,每个流上可用的最大RE个数将扩大一倍,而不再是这样如果仍然采用当前的计算公式,当信道条件和控制信息偏移值不变的情况下,则会导致UCI信息传输质量下降。一种直接方法是基站在配置时为UE配置更大的参数来解决上述问题,但由于采用RRC配置,其周期比较长,这样当一个配置周期内,如果存在该码字流发生从单层到两层或者从两层到单层的变化时,将不能很好地保证UCI的传输质量。此外,如果采用扩大配置的参数值的方式,也存在着扩大后的参数值在当前的表格中无法查找到的问题。因此,需要考虑针对单流映射到两层传输的情况,给出新的RE个数计算公式,从而保证UCI信息的传输质量。The aforementioned UCI information is transmitted on the PUSCH for a single codeword stream, so when there is a single codeword stream mapped to two-layer transmission, the maximum number of REs available on each stream will be doubled instead of In this way, if the current calculation formula is still used, when the channel condition and the control information offset value If it remains unchanged, it will lead to a decrease in the quality of UCI information transmission. A direct method is that the base station configures a larger parameter to solve the above problem, but due to Using RRC configuration, its cycle is relatively long, so when a During the configuration period, if the codeword stream changes from a single layer to two layers or from two layers to a single layer, the transmission quality of the UCI cannot be well guaranteed. Additionally, if an expanded configuration of parameter values, there is also an expanded The parameter value cannot be found in the current table. Therefore, it is necessary to consider the case where a single stream is mapped to two-layer transmission, and give a new calculation formula for the number of REs, so as to ensure the transmission quality of UCI information.
发明内容Contents of the invention
有鉴于此,本发明的主要目的在于提供一种上行控制信息在物理上行共享信道上的发送方法及装置,能快捷方便地确定出多天线系统中的UCI信息的目标长度。In view of this, the main purpose of the present invention is to provide a method and device for transmitting uplink control information on a physical uplink shared channel, which can quickly and conveniently determine the target length of UCI information in a multi-antenna system.
为达到上述目的,本发明的技术方案是这样实现的:In order to achieve the above object, technical solution of the present invention is achieved in that way:
一种上行控制信息在物理上行共享信道上的发送方法,包括:A method for sending uplink control information on a physical uplink shared channel, comprising:
确定以下参数:初始PUSCH的可用最大RE数量A,编码前业务信息的比特数量B,码率偏置量,当前子帧用于PUSCH传输的载波数量D,CQI/PMI信息编码后的调制符号占用的最大RE数量E;Determine the following parameters: the maximum number of available REs A for the initial PUSCH, the number of bits of service information before encoding B, the code rate offset, the number of carriers used for PUSCH transmission in the current subframe D, and the occupation of modulation symbols after CQI/PMI information encoding The maximum number of REs E;
根据所确定的参数确定ACK/NACK信息的目标长度,和/或RI信息的目标长度,和/或CQI/PMI信息的目标长度;determining a target length of ACK/NACK information, and/or a target length of RI information, and/or a target length of CQI/PMI information according to the determined parameters;
根据所确定的ACK/NACK信息的目标长度和/或RI信息的目标长度和/或CQI/PMI信息的目标长度对上行控制信息进行编码调制,并复用到PUSCH上发送。The uplink control information is coded and modulated according to the determined target length of the ACK/NACK information and/or the target length of the RI information and/or the target length of the CQI/PMI information, and is multiplexed on the PUSCH for transmission.
优选地,所述根据所确定的参数确定ACK/NACK信息的目标长度和/或秩指示RI信息的目标长度,为:Preferably, the determining the target length of the ACK/NACK information and/or the target length of the rank indication RI information according to the determined parameters is:
上行控制信息与业务信息一起复用到PUSCH并发送时,确定ACK/NACK信息目标长度和/或RI信息目标长度的方式为:其中,O1为初始ACK/NACK或RI信息的比特数,N为当前码流映射的层数,表示向上取整运算,min()为取最小运算,G1为ACK/NACK信息或秩指示RI信息相对于业务信息的码率偏置量;When uplink control information and service information are multiplexed into PUSCH and sent, the method of determining the target length of ACK/NACK information and/or the target length of RI information is as follows: Among them, O1 is the number of bits of the initial ACK/NACK or RI information, N is the number of layers mapped by the current code stream, Represents an upward rounding operation, min() is the minimum operation, and G1 is the code rate offset of ACK/NACK information or rank indication RI information relative to service information;
仅上行控制信息复用到PUSCH时,确定ACK/NACK信息目标长度和/或RI信息目标长度为其中,G3为ACK/NACK信息或RI信息相对于CQI的码率偏置量;F为信息编码前添加循环冗余校验CRC码后的CQI信息比特数。When only uplink control information is multiplexed to PUSCH, determine the target length of ACK/NACK information and/or the target length of RI information as Among them, G3 is the code rate offset of ACK/NACK information or RI information relative to CQI; F is the number of CQI information bits after adding a cyclic redundancy check CRC code before information encoding.
优选地,所述根据所确定的参数确定CQI/PMI信息的目标长度,为:Preferably, the determination of the target length of the CQI/PMI information according to the determined parameters is:
上行控制信息与业务信息一起复用到PUSCH并发送时,确定CQI/PMI信息目标长度的方式为:G2为确认CQI/PMI信息相对于业务信息的码率偏置量;O2为初始CQI/PMI信息的比特数,N为当前码流映射的层数,O2小于等于11时L=0,O2大于11时L=8;表示向上取整运算,min()为取最小运算;When the uplink control information and service information are multiplexed into the PUSCH and sent, the way to determine the target length of the CQI/PMI information is: G2 is to confirm the code rate offset of CQI/PMI information relative to service information; O2 is the number of bits of initial CQI/PMI information, N is the number of layers mapped by the current code stream, and L=0 when O2 is less than or equal to 11 , L=8 when O2 is greater than 11; Represents an upward rounding operation, and min() is a minimum operation;
仅上行控制信息复用到PUSCH时,确定CQI/PMI信息目标长度为其中,表示当前子帧用于PUSCH传输的载波数量,为当前PUSCH传输中用于除导频外的单载波-频分多址SC-FDM符号数量,Qm为调制阶数,QRI为秩指示信息编码后的比特数。When only uplink control information is multiplexed to PUSCH, determine the target length of CQI/PMI information as in, Indicates the number of carriers used for PUSCH transmission in the current subframe, is the number of single carrier-frequency division multiple access SC-FDM symbols used in the current PUSCH transmission except for the pilot, Qm is the modulation order, and QRI is the number of bits after encoding the rank indication information.
优选地,所述确定PUSCH的可用最大RE数量A,为:Preferably, the determination of the maximum number of available REs A of the PUSCH is:
其中,为初始PUSCH传输中用于除导频外的单载波-频分多址SC-FDM符号数量;为根据初始PDCCH获得的对应的载波数量; in, is the number of single carrier-frequency division multiple access SC-FDM symbols used in the initial PUSCH transmission except for the pilot; is the corresponding number of carriers obtained according to the initial PDCCH;
所述确定编码前业务信息的比特数量B为:The number B of bits determining the business information before encoding is:
其中,C为根据初始PDCCH获得的相同传输块经CRC和码块分割后的码块数量,Kr为第r+1个码块的比特数,r为小于C-1的正整数。 Among them, C is the number of code blocks after CRC and code block division of the same transmission block obtained according to the initial PDCCH, Kr is the number of bits of the r+1th code block, and r is a positive integer smaller than C-1.
优选地,所述确定CQI/PMI信息编码后的调制符号占用的最大RE数量E,为:Preferably, the determination of the maximum number of REs E occupied by the encoded modulation symbols of the CQI/PMI information is:
表示当前子帧用于PUSCH传输的载波数量,为当前PUSCH传输中用于除导频外的SC-FDM符号数量,Qm为调制阶数,QRI为秩指示信息编码后的比特数。 Indicates the number of carriers used for PUSCH transmission in the current subframe, is the number of SC-FDM symbols used in the current PUSCH transmission except for the pilot, Qm is the modulation order, and QRI is the number of bits encoded by the rank indication information.
优选地,所述C和Kr由以下方式获取:在初始的下行控制信息DCI格式0的PDCCH时,从初始的DCI格式0的PDCCH中获取;在没有初始的DCI格式0的PDCCH时,初始PSUCH采用半静态调度时,从最近的半静态调度配置的PDCCH中获取;或者,PUSCH由随机接入响应授权触发时,从相同传输块对应的随机接入响应授权中获取。Preferably, the C and Kr are obtained by the following methods: when the initial downlink control information is the PDCCH of DCI format 0, it is obtained from the PDCCH of the initial DCI format 0; when there is no PDCCH of the initial DCI format 0, the initial PSUCH adopts semi-persistent scheduling When PUSCH is triggered by a random access response grant, it is obtained from the PDCCH configured for the latest semi-persistent scheduling; or, when the PUSCH is triggered by a random access response grant, it is obtained from the random access response grant corresponding to the same transport block.
优选地,所述码率偏置量由高层利用无线资源控制RRC配置而确定;或或其中,为所配置的ACK/NACK信息相对于业务信息的码率偏置量;为所配置的RI相对于业务信息的码率偏置量;为所配置的CQI相对于业务信息的码率偏置量。Preferably, the code rate offset is determined by a high layer using radio resource control RRC configuration; or or in, is the code rate offset of the configured ACK/NACK information relative to the service information; is the code rate offset of the configured RI relative to the service information; is the code rate offset of the configured CQI relative to the service information.
一种上行控制信息在物理上行共享信道上的发送装置,所述装置包括第一确定单元、第二确定单元和调制发送单元;其中,A device for sending uplink control information on a physical uplink shared channel, the device includes a first determination unit, a second determination unit, and a modulation and transmission unit; wherein,
第一确定单元,用于确定以下参数:初始PUSCH的可用最大RE数量A,编码前业务信息的比特数量B,码率偏置量,当前子帧用于PUSCH传输的载波数量D,CQI/预编码矩阵指示PMI信息编码后的调制符号占用的最大RE数量E;The first determining unit is used to determine the following parameters: the maximum number of available REs A of the initial PUSCH, the number of bits of service information before encoding B, the code rate offset, the number of carriers used for PUSCH transmission in the current subframe D, and the CQI/Preset The encoding matrix indicates the maximum number of REs E occupied by the modulation symbols encoded by the PMI information;
第二确定单元,用于根据所确定的参数确定ACK/NACK信息的目标长度,和/或RI信息的目标长度,和/或CQI/PMI信息的目标长度;The second determining unit is configured to determine a target length of ACK/NACK information, and/or a target length of RI information, and/or a target length of CQI/PMI information according to the determined parameters;
调制发送单元,用于根据所确定的ACK/NACK信息的目标长度和/或RI信息的目标长度和/或CQI/PMI信息的目标长度对上行控制信息进行编码调制,并与业务信息一起复用到PUSCH上发送。A modulation and sending unit, configured to encode and modulate uplink control information according to the determined target length of ACK/NACK information and/or target length of RI information and/or target length of CQI/PMI information, and multiplex together with service information Send it on PUSCH.
优选地,所述第二确定单元进一步地,Preferably, the second determination unit further,
在上行控制信息与业务信息一起复用到PUSCH并发送时,确定ACK/NACK信息目标长度和/或RI信息目标长度的方式为:其中,O1为初始ACK/NACK信息和/或RI信息的比特数,N为当前码流映射的层数,表示向上取整运算,min()为取最小运算,G1为ACK/NACK信息/或秩指示RI信息相对于业务信息的码率偏置量;When the uplink control information and service information are multiplexed into the PUSCH and sent, the method of determining the target length of ACK/NACK information and/or the target length of RI information is as follows: Wherein, O1 is the number of bits of initial ACK/NACK information and/or RI information, N is the number of layers mapped by the current code stream, Represents an upward rounding operation, min() is a minimum operation, and G1 is the code rate offset of ACK/NACK information/or rank indication RI information relative to service information;
在仅上行控制信息复用到PUSCH时,确定ACK/NACK信息目标长度和/或RI信息目标长度为其中,G3为ACK/NACK信息或RI信息相对于CQI的码率偏置量;F为信息编码前添加循环冗余校验CRC码后的CQI信息比特数。When only uplink control information is multiplexed to PUSCH, determine the target length of ACK/NACK information and/or the target length of RI information as Among them, G3 is the code rate offset of ACK/NACK information or RI information relative to CQI; F is the number of CQI information bits after adding a cyclic redundancy check CRC code before information encoding.
优选地,所述第二确定单元进一步地,Preferably, the second determination unit further,
上行控制信息与业务信息一起复用到PUSCH并发送时,确定CQI/PMI信息目标长度的方式为:G2为确认CQI/PMI信息相对于业务信息的码率偏置量;O2为初始CQI/PMI信息的比特数,N为当前码流映射的层数,O2小于等于11时L=0,O2大于11时L=8;表示向上取整运算,min()为取最小运算;When the uplink control information and service information are multiplexed into the PUSCH and sent, the way to determine the target length of the CQI/PMI information is: G2 is to confirm the code rate offset of CQI/PMI information relative to service information; O2 is the number of bits of initial CQI/PMI information, N is the number of layers mapped by the current code stream, and L=0 when O2 is less than or equal to 11 , L=8 when O2 is greater than 11; Represents an upward rounding operation, and min() is a minimum operation;
仅上行控制信息复用到PUSCH时,确定CQI/PMI信息目标长度为其中,表示当前子帧用于PUSCH传输的载波数量,为当前PUSCH传输中用于除导频外的单载波-频分多址SC-FDM符号数量,Qm为调制阶数,QRI为秩指示信息编码后的比特数。When only uplink control information is multiplexed to PUSCH, determine the target length of CQI/PMI information as in, Indicates the number of carriers used for PUSCH transmission in the current subframe, is the number of single carrier-frequency division multiple access SC-FDM symbols used in the current PUSCH transmission except for the pilot, Qm is the modulation order, and QRI is the number of bits after encoding the rank indication information.
优选地,所述第二确定单元进一步通过下式确定A,为:Preferably, the second determining unit further determines A through the following formula, which is:
其中,为初始PUSCH传输中用于除导频外的单载波-频分多址SC-FDM符号数量;为根据初始PDCCH获得的对应的载波数量; in, is the number of single carrier-frequency division multiple access SC-FDM symbols used in the initial PUSCH transmission except for the pilot; is the corresponding number of carriers obtained according to the initial PDCCH;
进一步通过下式确定B:Further determine B by the following formula:
其中,C为根据初始PDCCH获得的相同传输块经CRC和码块分割后的码块数量,Kr为第r+1个码块的比特数,r为小于C-1的正整数。 Among them, C is the number of code blocks after CRC and code block division of the same transmission block obtained according to the initial PDCCH, Kr is the number of bits of the r+1th code block, and r is a positive integer smaller than C-1.
优选地,所述第二确定单元进一步通过下式确定E:Preferably, the second determination unit further determines E by the following formula:
表示当前子帧用于PUSCH传输的载波数量,为当前PUSCH传输中用于除导频外的SC-FDM符号数量,Qm为调制阶数,QRI为秩指示信息编码后的比特数。 Indicates the number of carriers used for PUSCH transmission in the current subframe, is the number of SC-FDM symbols used in the current PUSCH transmission except for the pilot, Qm is the modulation order, and QRI is the number of bits encoded by the rank indication information.
优选地,所述第二确定单元进一步通过以下方式获取C和Kr:在初始的DCI格式0的PDCCH时,从初始的DCI格式0的PDCCH中获取;在没有初始的DCI格式0的PDCCH时,初始PSUCH采用半静态调度时,从最近的半静态调度配置的PDCCH中获取;或者,PUSCH由随机接入响应授权触发时,从相同传输块对应的随机接入响应授权中获取。Preferably, the second determination unit further obtains in the following manner C and Kr : when there is an initial DCI format 0 PDCCH, obtain it from the initial DCI format 0 PDCCH; when there is no initial DCI format 0 PDCCH, when the initial PSUCH adopts semi-persistent scheduling, obtain it from the nearest semi-persistent or, when the PUSCH is triggered by a random access response grant, obtain it from the random access response grant corresponding to the same transport block.
优选地,所述第一确定单元利用高层的RRC配置而确定码率偏置量;或或其中,为所配置的ACK/NACK信息相对于业务信息的码率偏置量;为所配置的RI相对于业务信息的码率偏置量;为所配置的CQI相对于业务信息的码率偏置量。Preferably, the first determination unit determines the code rate offset by using a high-level RRC configuration; or or in, is the code rate offset of the configured ACK/NACK information relative to the service information; is the code rate offset of the configured RI relative to the service information; is the code rate offset of the configured CQI relative to the service information.
根据本发明的方法能够确定出UCI编码后的调制符号数量。既保持了与Rel-8的兼容性,不需要修改当前控制信息编码调制方式的偏移值,实现起来比较简单。确定出不同UCI信息的目标长度后,UE就能够根据所确定的目标长度值对不同UCI和数据信息进行编码和速率匹配,进而通过交织、调制和层映射等相关处理后发送给基站。The method according to the invention can determine the number of UCI coded modulation symbols. It not only maintains the compatibility with Rel-8, but also does not need to modify the offset value of the current control information encoding and modulation mode, and the implementation is relatively simple. After determining the target length of different UCI information, UE can encode and rate match different UCI and data information according to the determined target length value, and then send it to the base station after related processing such as interleaving, modulation, and layer mapping.
附图说明Description of drawings
图1为LTE系统中控制信息和业务信息的交织复用方式示意图;FIG. 1 is a schematic diagram of an interleaving and multiplexing manner of control information and service information in an LTE system;
图2为本发明上行控制信息在物理上行共享信道上的发送装置的组成结构示意图。FIG. 2 is a schematic diagram of the composition and structure of an apparatus for sending uplink control information on a physical uplink shared channel according to the present invention.
具体实施方式detailed description
针对PUSCH上是否有业务信息(业务数据)发送两种情况,下面分别给出不同UCI信息编码后的目标调制符号个数的计算方法:For the two cases of whether there is service information (service data) to be sent on the PUSCH, the calculation methods for the number of target modulation symbols after encoding different UCI information are given below:
对于UCI与业务信息同时复用在PUSCH上的情况:For the case where UCI and service information are multiplexed on PUSCH at the same time:
当有ACK/NACK信息或者RI信息发送时,其对应的编码后的调制符号个数可以由下式确定:When ACK/NACK information or RI information is sent, the number of corresponding coded modulation symbols can be determined by the following formula:
公式(5)中O表示初始ACK/NACK或者RI信息比特数,表示当前子帧用于PUSCH传输的带宽,以载波个数表示,表示初始PUSCH传输中除了用于导频(包括DMRS和SRS)外的SC-FDMA符号个数。C、Kr和从初始的PDCCH中获得,具体的,C表示根据初始PDCCH获取的相同传输块经过添加CRC比特并进行码块分割后对应的码块个数,Kr表示每个码块对应的比特数,这样表示进行信道编码前的业务信息比特个数。而表示根据初始PDCCH获得的对应带宽信息,以载波个数表示。在初始的DCI格式0的PDCCH时,从初始的DCI格式0的PDCCH中获取;特别的,当没有初始的DCI格式0的PDCCH时,C和Kr可以通过下面两种方式获取:(1)当初始PSUCH采用半静态调度时,可以从最近的半静态调度配置的PDCCH获取;(2)当PUSCH由随机接入响应授权触发,则从相同传输块对应的随机接入响应授权获取。对应于ACK/NACK或者RI,分别表示为或其值表示ACK/NACK或者RI的偏移值,由高层采用RRC配置;表示向上取整,这是使得在经过后面的星座调制后UCI对应的调制符号上仅包含控制信息;min(A,B)表示取A和B中的最小值,这是考虑到ACK/NACK或者RI只能占用每个子帧的4个SC-FDMA符号上,因此Q′应小于In formula (5), O represents the number of initial ACK/NACK or RI information bits, Indicates the bandwidth used for PUSCH transmission in the current subframe, expressed in the number of carriers, Indicates the number of SC-FDMA symbols except for pilots (including DMRS and SRS) in the initial PUSCH transmission. C, Kr and Obtained from the initial PDCCH, specifically, C represents the number of code blocks corresponding to the same transmission block obtained according to the initial PDCCH after adding CRC bits and performing code block segmentation, and Kr represents the number of bits corresponding to each code block, so Indicates the number of service information bits before channel coding. and Indicates the corresponding bandwidth information obtained according to the initial PDCCH, expressed in the number of carriers. When the PDCCH of the initial DCI format 0 is obtained, it is obtained from the PDCCH of the initial DCI format 0; in particular, when there is no PDCCH of the initial DCI format 0, C and Kr can be obtained in the following two ways: (1) when the initial PSUCH adopts semi-persistent scheduling, it can be obtained from the PDCCH configured for semi-persistent scheduling; (2) when the PUSCH is triggered by a random access response grant, then Grant acquisition from the corresponding random access response of the same transport block. Corresponding to ACK/NACK or RI, expressed as or Its value represents the offset value of ACK/NACK or RI, which is configured by RRC by the upper layer; Represents rounding up, which makes the modulation symbol corresponding to UCI only contain control information after the subsequent constellation modulation; min(A, B) represents the minimum value of A and B, which is considering ACK/NACK or RI can only occupy 4 SC-FDMA symbols of each subframe, so Q′ should be less than
对于CQI/PMI,其编码后的调制符号个数为:For CQI/PMI, the number of encoded modulation symbols is:
公式(6)与公式(5)中相同的符号和变量名所表示的含义相同,需要进一步补充的是,其中,O(含义与公式5不同)为CQI/PMI信息的比特数,公式(6)中L的取值:当O大于11时,L=8,否则L=0;表示CQI/PMI信息编码后的调制符号最大个数,即其最大占用的RE个数,这是因为根据当前Rel-8的UCI与业务信息交织复用方法,其可以占用除RI(如果有的话)外的所有可用PUSCH资源;N为当前码流映射的层数,为初始PUSCH传输中用于除导频外的单载波-频分多址SC-FDM符号数量;为根据初始PDCCH获得的对应的载波数量,Qm为调制阶数,QRI为秩指示信息编码后的比特数。Formula (6) has the same meaning as that represented by the same symbols and variable names in formula (5), and it needs to be further added that, wherein, O (meaning is different from formula 5) is the number of bits of CQI/PMI information, and formula (6) The value of L in: when O is greater than 11, L=8, otherwise L=0; Indicates the maximum number of modulation symbols encoded by CQI/PMI information, that is, the maximum number of REs occupied by it. This is because according to the current Rel-8 UCI and service information interleaving and multiplexing method, it can occupy RI (if any) All available PUSCH resources except the call); N is the number of layers mapped by the current code stream, is the number of single carrier-frequency division multiple access SC-FDM symbols used in the initial PUSCH transmission except for the pilot; is the corresponding number of carriers obtained according to the initial PDCCH, Qm is the modulation order, and QRI is the number of bits encoded by the rank indication information.
(2)对于仅有控制复用在PUSCH上的情况(2) For the case where only the control is multiplexed on the PUSCH
当PUSCH上仅有UCI信息传输,且对应的PUSCH码字流对应N层传输时,此时,由于该码字流映射到两层传输,等效于其可用的资源增大一倍,同时考虑到,CQI可以占用除RI信息外的所有PUSCH资源,因此,编码后的CQI/PMI调制符号个数为:When only UCI information is transmitted on PUSCH, and the corresponding PUSCH codeword stream corresponds to N-layer transmission, at this time, since the codeword stream is mapped to two-layer transmission, it is equivalent to doubling its available resources, and considering Now, CQI can occupy all PUSCH resources except RI information, therefore, the number of coded CQI/PMI modulation symbols is:
对于ACK/NACK或RI,其编码后的调制符号个数为:For ACK/NACK or RI, the number of coded modulation symbols is:
公式(8)与公式(5)相比,各个变量所表示的含义是相同的,不同之处是在公式(5)中的变成了OCQI-MIN,该OCQI-MIN表示编码前添加CRC后的CQI信息的比特数,为ACK/NACK信息或RI信息相对于CQI的码率偏置量。Compared with formula (5), formula (8) has the same meaning of each variable, the difference is in formula (5) Becomes OCQI-MIN , the OCQI-MIN represents the number of bits of CQI information after adding CRC before encoding, is the code rate offset of ACK/NACK information or RI information relative to CQI.
根据上述公式计算出不同UCI信息的目标长度后,UE就能够根据这个目标长度值对不同UCI和数据信息进行编码和速率匹配后,进而通过交织、调制和层映射等相关处理后发送给基站。After calculating the target length of different UCI information according to the above formula, UE can encode and rate match different UCI and data information according to the target length value, and then send it to the base station after related processing such as interleaving, modulation, and layer mapping.
为使本发明的目的、技术方案和优点更加清楚明白,以下举实施例并参照附图,对本发明进一步详细说明。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail by citing the following embodiments and referring to the accompanying drawings.
LTE-A系统中上行多天线的情形下,单个码字流映射到两层传输时,UCI复用在PUSCH上传输时,其编码后的调制符号个数计算方法已无法满足保证控制信息的传输质量,本发明针对于此,提出了改进后的不同UCI编码后的目标调制符号个数确定方式。In the case of multiple uplink antennas in the LTE-A system, when a single codeword stream is mapped to two-layer transmission, and when UCI is multiplexed and transmitted on the PUSCH, the calculation method for the number of encoded modulation symbols cannot meet the requirements of ensuring the transmission of control information. quality, the present invention aims at this, and proposes an improved way to determine the number of target modulation symbols after different UCI codes.
为了便于理解本发明,下面结合具体的实施例对本发明进一步阐述。In order to facilitate understanding of the present invention, the present invention will be further elaborated below in conjunction with specific examples.
实施例一Embodiment one
本实施例中假设上行传输基于常规循环前缀(CP,CyclicPrefix),也就是该子帧中共有14个SC-FDMA符号,其中2个符号用于发送DMRS,同时上行传输的传输块个数为1个,该传输块经信道编码和速率匹配等操作后,对应的码字流将映射到两层传输。进一步的,本实施例中上行传输中没有SRS需要发送,UE有业务信息需要发送,同时有4比特CQI和2比特ACK/NACK需要发送,没有RI信息需要发送,这样CQI和ACK/NACK与业务信息复用在PUSCH上传输。In this embodiment, it is assumed that the uplink transmission is based on a conventional cyclic prefix (CP, CyclicPrefix), that is, there are 14 SC-FDMA symbols in the subframe, 2 of which are used to send DMRS, and the number of transmission blocks for uplink transmission is 1 After the transmission block undergoes operations such as channel coding and rate matching, the corresponding codeword stream will be mapped to two-layer transmission. Further, in this embodiment, there is no SRS to be sent in the uplink transmission, the UE has service information to be sent, and at the same time, 4-bit CQI and 2-bit ACK/NACK need to be sent, and no RI information needs to be sent, so that the CQI and ACK/NACK are related to the service Information multiplexing is transmitted on PUSCH.
假设UE通过对PDCCH盲检测,检测到基站为其分配的带宽为1个RB,同时根据MCS和RB个数可以获取对应的传输块TBsize为120,调制阶数Qm=2;这样对该传输块添加24比特的CRC,并经过码块分割后,对应一个码块,且该码块的包含144比特。Assuming that the UE detects that the bandwidth allocated by the base station is 1 RB through blind detection of the PDCCH, and at the same time, according to the MCS and the number of RBs, the corresponding transmission block TB size can be obtained as 120, and the modulation order Qm =2; A 24-bit CRC is added to the block, and after the code block is divided, it corresponds to a code block, and the code block contains 144 bits.
当有业务信息发送时,ACK/NACK编码后的调制符号个数确定方法来确定ACK/NACK占用的RE个数为:When there is service information to send, the number of modulation symbols after ACK/NACK coding is determined by the method to determine the number of REs occupied by ACK/NACK:
根据前面的分析上式中O=2,基站通过RRC配置的这样由上式可以计算出Q′ACK=16;According to the previous analysis, O=2 in the above formula, The base station is configured by RRC In this way, Q'ACK = 16 can be calculated from the above formula;
进一步根据本发明给出的CQI/PMI编码后的调制符号个数计算公式可以获得CQI占用的RE个数:Further, the number of REs occupied by CQI can be obtained according to the formula for calculating the number of modulation symbols after CQI/PMI encoding provided by the present invention:
公式中的变量中L=0,O=4,由于没有RI发送,因此QRI=0,其它变量与上面公式(5)相同,这样可以计算得到CQI占用的RE个数=16。Among the variables in the formula, L=0, O=4, Since no RI is sent, QRI =0, and other variables are the same as the above formula (5), so it can be calculated that the number of REs occupied by CQI=16.
由于没有RI信息发送,因此,对上述的业务信息进一步经过信道编码和速率匹配后,对应的比特个数为:Since no RI information is sent, after further channel coding and rate matching for the above service information, the corresponding number of bits is:
确定了不同控制信息编码后的调制符号个数以及业务信息编码和速率匹配后的调制符号个数,这样对不同的上行控制信息进行编码后就按照上面确定的不同控制信息编码后的调制符号个数为目标长度来获取最终反馈的控制信息,进而可以将上述控制信息平均分为两部分,每部分中包含8个ACK/NACK调制符号、8个CQI调制符号和28个数据信息调制符号,两部分信息分别在两个层上发送,每个层上不同的UCI信息和业务信息按照Rel-8的方法进行交织,交织矩阵大小为12×14。然后读出两个交织矩阵构成一个长度为24×14的序列,该序列的偶数位放置第一层上交织矩阵的读出的信息,奇数位放置第二层上交织矩阵读出的信息。然后对上述信息进行加扰、层映射等操作后发送给基站。Determine the number of modulation symbols after different control information encoding and the number of modulation symbols after service information encoding and rate matching, so that after encoding different uplink control information, the number of modulation symbols after encoding different control information determined above The number is the target length to obtain the final feedback control information, and then the above control information can be divided into two parts on average, each part contains 8 ACK/NACK modulation symbols, 8 CQI modulation symbols and 28 data information modulation symbols, two Part of the information is sent on two layers respectively, and different UCI information and service information on each layer are interleaved according to the method of Rel-8, and the size of the interleaving matrix is 12×14. Then two interleaving matrices are read out to form a sequence with a length of 24×14. The even bits of the sequence are used to place the information read from the interleaving matrix on the first layer, and the odd bits are used to place the information read out from the interleaving matrix on the second layer. Then perform operations such as scrambling and layer mapping on the above information and send it to the base station.
实施例二Embodiment two
本实施例中假设上行传输基于常规CP,也就是该子帧中共有14个SC-FDMA符号,同时2个符号用于发送DMRS,同时上行传输的传输块个数为1个,该传输块经信道编码和速率匹配等操作后,对应的码字流将映射到两层传输。进一步的,本实施例中上行传输中没有SRS需要发送,UE也没有业务信息需要发送,同时有16比特CQI和2比特ACK/NACK以及1比特的RI信息需要发送,这样CQI、RI和ACK/NACK复用在PUSCH上传输。In this embodiment, it is assumed that the uplink transmission is based on the conventional CP, that is, there are 14 SC-FDMA symbols in the subframe, and 2 symbols are used to send DMRS at the same time, and the number of transmission blocks for uplink transmission is 1 at the same time. After operations such as channel coding and rate matching, the corresponding codeword stream will be mapped to two-layer transmission. Further, in this embodiment, there is no SRS to be sent in the uplink transmission, and the UE has no service information to be sent, and there are 16-bit CQI, 2-bit ACK/NACK, and 1-bit RI information to be sent, so that CQI, RI and ACK/NACK NACK is multiplexed and transmitted on PUSCH.
假设UE通过对PDCCH盲检,检测到基站为其分配的带宽为1个RB,调制阶数Qm=2。It is assumed that the UE detects that the bandwidth allocated by the base station is 1 RB and the modulation order Qm =2 through blind detection of the PDCCH.
不同上行控制信息编码后的调制符号个数确定方法来确定其占用的RE个数:The method for determining the number of modulation symbols after encoding different uplink control information is to determine the number of REs occupied by it:
对于ACK:For ACKs:
其编码后的调制符号个数可由上式计算,式中O=2,OCQI-MIN=16+8=24,这样由上式可得Q′ACK=48;The number of encoded modulation symbols can be calculated by the above formula, where O=2, OCQI-MIN =16+8=24, In this way, Q′ACK = 48 can be obtained from the above formula;
对于RI:For RIs:
其编码后的调制符号个数可由上式计算,式中O=1,OCQI-MIN=16+8=24,这样由上式可得Q′RI=24;The number of encoded modulation symbols can be calculated by the above formula, where O=1, OCQI-MIN =16+8=24, In this way, Q′RI =24 can be obtained from the above formula;
对于CQI:根据本发明当一个码字流对应两层传输时,此时等效于其可用的资源增大一倍,同时考虑到CQI可以占用除RI信息外的所有PUSCH资源,因此,编码后的CQI/PMI调制符号个数为:For CQI: According to the present invention, when a codeword stream corresponds to two-layer transmission, it is equivalent to doubling its available resources at this time, and considering that CQI can occupy all PUSCH resources except RI information, therefore, after encoding The number of CQI/PMI modulation symbols is:
确定了不同控制信息编码后的调制符号个数,这样对不同控制信编码后就按照上面确定的不同控制信息编码后的调制符号个数为目标长度来获取最终反馈的控制信息,然后对上述信息映射到两个层上发送给基站。具体为对上个层上的信息进行交织,交织矩阵大小为24×14,不同的UCI和业务信息按照Rel-8的方法写入交织矩阵,不同的是第一层上要发送的信息写入交织矩阵的偶数行,第二层上需要发送的信息写入交织矩阵的奇数行。然后逐列读出该交织矩阵,构成24×14长度的调制符号,然后经加扰层映射等操作后发送给基站。The number of modulation symbols encoded by different control information is determined, so that after encoding different control information, the number of modulation symbols encoded by different control information determined above is used as the target length to obtain the final feedback control information, and then the above information Mapped to two layers and sent to the base station. Specifically, the information on the upper layer is interleaved. The size of the interleaving matrix is 24×14. Different UCI and service information are written into the interleaving matrix according to the method of Rel-8. The difference is that the information to be sent on the first layer is written into In the even-numbered rows of the interleaving matrix, the information to be sent on the second layer is written into the odd-numbered rows of the interleaving matrix. Then read out the interleaving matrix column by column to form a modulation symbol with a length of 24×14, and then send it to the base station after operations such as scrambling layer mapping.
根据本发明的方法能够确定出UCI编码后的调制符号数量。既保持了与Rel-8的兼容性,不需要修改当前控制信息编码调制方式的偏移值,实现起来比较简单。The method according to the invention can determine the number of UCI coded modulation symbols. It not only maintains the compatibility with Rel-8, but also does not need to modify the offset value of the current control information encoding and modulation mode, and the implementation is relatively simple.
图2为本发明上行控制信息在物理上行共享信道上的发送装置的组成结构示意图,如图2所示,本发明上行控制信息在物理上行共享信道上的发送装置包括第一确定单元20和第二确定单元21;其中,2 is a schematic diagram of the composition and structure of the device for sending uplink control information on the physical uplink shared channel of the present invention. As shown in FIG. 2 , the device for sending uplink control information on the physical uplink shared channel of the present invention includes a first determining unit 20 and a Two determining unit 21; wherein,
第一确定单元20,用于确定初始PUSCH的可用最大RE数量A,编码前业务信息的比特数量B,码率偏置量,当前子帧用于PUSCH传输的载波数量D,CQI/预编码矩阵指示PMI信息编码后的调制符号占用的最大RE数量E;The first determination unit 20 is used to determine the maximum number of available REs A of the initial PUSCH, the number of bits of the service information before encoding B, the code rate offset, the number of carriers D used for PUSCH transmission in the current subframe, and the CQI/precoding matrix Indicates the maximum number of REs E occupied by the modulation symbols encoded by the PMI information;
第二确定单元21,用于根据所确定的参数确定ACK/NACK信息的目标长度,和/或RI信息的目标长度,和/或CQI/PMI信息的目标长度;The second determining unit 21 is configured to determine a target length of ACK/NACK information, and/or a target length of RI information, and/or a target length of CQI/PMI information according to the determined parameters;
调制发送单元22,用于根据所确定的ACK/NACK信息的目标长度和/或RI信息的目标长度和/或CQI/PMI信息的目标长度对上行控制信息进行编码调制,并与业务信息一起复用到PUSCH上发送。本发明中,调制编码方式与现有技术中的处理方式完全相同。The modulation and sending unit 22 is configured to encode and modulate the uplink control information according to the determined target length of the ACK/NACK information and/or the target length of the RI information and/or the target length of the CQI/PMI information, and complex together with the service information It is sent on PUSCH. In the present invention, the modulation and encoding method is completely the same as the processing method in the prior art.
上述第二确定单元21进一步地,The above-mentioned second determination unit 21 further,
在上行控制信息与业务信息一起复用到PUSCH并发送时,确定ACK/NACK或RI信息目标长度的方式为:其中,O1为初始ACK/NACK或RI信息的比特数,N为当前码流映射的层数,表示向上取整运算,min()为取最小运算,G1为确认ACK/NACK或秩指示RI信息相对于业务信息的码率偏置量;When uplink control information and service information are multiplexed into PUSCH and sent together, the way to determine the target length of ACK/NACK or RI information is: Among them, O1 is the number of bits of the initial ACK/NACK or RI information, N is the number of layers mapped by the current code stream, Indicates the upward rounding operation, min() is the minimum operation, and G1 is the code rate offset of the confirmation ACK/NACK or rank indication RI information relative to the service information;
在仅上行控制信息复用到PUSCH时,确定ACK/NACK或RI信息目标长度为其中,G3为ACK/NACK或RI信息相对于CQI的码率偏置量;F为信息编码前添加循环冗余校验CRC码后的CQI信息比特数。When only uplink control information is multiplexed to PUSCH, determine the target length of ACK/NACK or RI information as Among them, G3 is the code rate offset of ACK/NACK or RI information relative to CQI; F is the number of CQI information bits after adding a cyclic redundancy check CRC code before information encoding.
上述第二确定单元21进一步地,The above-mentioned second determination unit 21 further,
上行控制信息与业务信息一起复用到PUSCH并发送时,确定CQI/PMI信息目标长度的方式为:G2为确认CQI/PMI信息相对于业务信息的码率偏置量;O2为初始CQI/PMI信息的比特数,N为当前码流映射的层数,O2小于等于11时L=0,O2大于11时L=8;表示向上取整运算,min()为取最小运算;When the uplink control information and service information are multiplexed into the PUSCH and sent, the way to determine the target length of the CQI/PMI information is: G2 is to confirm the code rate offset of CQI/PMI information relative to service information; O2 is the number of bits of initial CQI/PMI information, N is the number of layers mapped by the current code stream, and L=0 when O2 is less than or equal to 11 , L=8 when O2 is greater than 11; Represents an upward rounding operation, and min() is a minimum operation;
仅上行控制信息复用到PUSCH时,确定CQI/PMI信息目标长度为其中,表示当前子帧用于PUSCH传输的载波数量,为当前PUSCH传输中用于除导频外的单载波-频分多址SC-FDM符号数量,Qm为调制阶数,QRI为秩指示信息编码后的比特数。When only uplink control information is multiplexed to PUSCH, determine the target length of CQI/PMI information as in, Indicates the number of carriers used for PUSCH transmission in the current subframe, is the number of single carrier-frequency division multiple access SC-FDM symbols used in the current PUSCH transmission except for the pilot, Qm is the modulation order, and QRI is the number of bits after encoding the rank indication information.
上述第二确定单元21进一步通过下式确定A,为:The above-mentioned second determination unit 21 further determines A through the following formula, which is:
其中,为初始PUSCH传输中用于除导频外的单载波-频分多址SC-FDM符号数量;为根据初始PDCCH获得的对应的载波数量;N为当前码流映射的层数; in, is the number of single carrier-frequency division multiple access SC-FDM symbols used in the initial PUSCH transmission except for the pilot; is the corresponding number of carriers obtained according to the initial PDCCH; N is the number of layers mapped by the current code stream;
进一步通过下式确定B:Further determine B by the following formula:
其中,C为根据初始PDCCH获得的相同传输块经CRC和码块分割后的码块数量,Kr为第r+1个码块的比特数,r为小于C-1的正整数; Among them, C is the number of code blocks after the same transmission block obtained according to the initial PDCCH is divided by CRC and code blocks, Kr is the number of bits of the r+1th code block, and r is a positive integer less than C-1;
上述第二确定单元21进一步通过下式确定E:The above-mentioned second determination unit 21 further determines E by the following formula:
表示当前子帧用于PUSCH传输的载波数量,为当前PUSCH传输中用于除导频外的SC-FDM符号数量,Qm为调制阶数,QRI为秩指示信息编码后的比特数。 Indicates the number of carriers used for PUSCH transmission in the current subframe, is the number of SC-FDM symbols used in the current PUSCH transmission except for the pilot, Qm is the modulation order, and QRI is the number of bits encoded by the rank indication information.
上述第二确定单元21进一步通过以下方式获取C和Kr:在初始的DCI格式0的PDCCH时,从初始的DCI格式0的PDCCH中获取;在没有初始的DCI格式0的PDCCH时,初始PSUCH采用半静态调度时,从最近的半静态调度配置的PDCCH中获取;或者,PUSCH由随机接入响应授权触发时,从相同传输块对应的随机接入响应授权中获取。The above-mentioned second determination unit 21 further obtains in the following manner C and Kr : when there is an initial DCI format 0 PDCCH, obtain it from the initial DCI format 0 PDCCH; when there is no initial DCI format 0 PDCCH, when the initial PSUCH adopts semi-persistent scheduling, obtain it from the nearest semi-persistent or, when the PUSCH is triggered by a random access response grant, obtain it from the random access response grant corresponding to the same transport block.
上述第一确定单元20利用高层的RRC配置而确定码率偏置量;或其中,为所配置的ACK/NACK相对于业务信息的码率偏置量;为所配置的RI相对于业务信息的码率偏置量;为所配置的CQI相对于业务信息的码率偏置量。The above-mentioned first determination unit 20 determines the code rate offset by using the RRC configuration of the upper layer; or in, is the code rate offset of the configured ACK/NACK relative to the service information; is the code rate offset of the configured RI relative to the service information; is the code rate offset of the configured CQI relative to the service information.
本领域技术人员应当理解,本发明上行控制信息在物理上行共享信道上的发送装置是为实现前述的本发明上行控制信息在物理上行共享信道上的发送方法而设计的,上述各处理单元的实现功能可参照前述方法的相关描述而理解。图中的各处理单元的功能可通过运行于处理器上的程序而实现,也可通过具体的逻辑电路而实现。Those skilled in the art should understand that the device for sending uplink control information on the physical uplink shared channel of the present invention is designed to implement the aforementioned method for sending uplink control information on the physical uplink shared channel of the present invention. The functions can be understood with reference to the relevant descriptions of the aforementioned methods. The functions of each processing unit in the figure can be realized by programs running on the processor, or by specific logic circuits.
以上所述,仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.
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