LTE36211860中文版

3GPP TS 36.211 V8.6.0 (2009-03)Technical Specification3rd Generation Partnership Project;Technical Specification Group Radio Access Network;Evolved Universal Terrestrial Radio Access (E-UTRA);Physical Channels and Modulation(Release 8)The present document has been developed within the 3rd Generation Partnership Project (3GPP TM) and may be further elaborated for the purposes of 3GPP. The present document has not been subject to any approval process by the 3GPP Organizational Partners and shall not be implemented. This Specification is provided for future development work within 3GPP only. The Organizational Partners accept no liability for any use of this Specification.Specifications and reports for implementation of the 3GPP TM system should be obtained via the 3GPP Organizational Partners Publications Offices.6.10参考信号下行参考信号定义了三种类型：- Cell-specific RS，用于non-MBSFN传输- MBSFN RS，用于MBSFN(Multicast/Broadcast over Single Frequency Network)传输- UE-specific RS每个下行链路天线端口传输一个参考信号。6.10.1Cell-specific 参考信号(Cell-specific RS)在支持non-MBSFN 传输的小区中，Cell-specific RS在所有下行子帧中发送。若一个子帧用于MBSFN 传输，则仅该子帧的前两个OFDM符号用于Cell-specific RS传输。Cell-specific RS在0-3天线端口中的一个或多个端口传输。Cell-specific RS仅定义在时。6.10.1.1序列产生参考信号序列定义为：其中，是一个无线帧中的时隙号，是一个时隙中的OFDM符号号。伪随机序列在7.2节定义。在每个OFDM符号的起始位置，伪随机序列产生器使用进行初始化，其中6.10.1.2资源映射参考信号序列按照下式映射到复数调制符号上，作为时隙天线端口的参考信号：其中变量 和 定义了不同参考信道的频域位置：cell-specific频偏定义为。在一个时隙中用于任意一个天线端口参考信号传输的RE，将不用于该时隙任何其它天线端口的任何传输，该RE位置设置为零。图.2-1 和给出了用于Cell-specific RS传输的RE。表示在天线端口传输参考信号的一个RE。Figure .2-1. 下行参考信号映射 (普通CP).Figure .2-2. 下行参考信号映射 (扩展CP).6.10.2MBSFN 参考信号(MBSFN RS)MBSFN RS仅在分配用于MBSFN传输的子帧发送。MBSFN RS在天线端口4发送。MBSFN RS仅支持扩展CP。.1 序列产生MBSFN RS序列定义为其中，是一个无线帧中的时隙号，是一个时隙中的OFDM符号号。伪随机序列在7.2节定义。在每个OFDM符号的起始位置，伪随机序列产生器使用进行初始化。.2资源映射OFDM符号中的参考信号序列映射到天线端口4的复数调制符号上：其中图.2-1给出了时，用于MBSFN RS传输的RE。当在MBSFN 专用小区中()时，MBSFN RS的RE映射如图所示。表示在天线端口传输参考信号的一个RE。Figure .2-1: MBSFN 参考信号映射 (扩展CP, )Figure .2-3: MBSFN 参考信号映射 (扩展CP, )6.10.3UE-specific 参考信号(UE-specific RS)UE-specific RS基于PDSCH的单天线端口传输，使用天线端口5。由高层通知UE PDSCH中是否存在UE-specific RS和UE-specific RS是否用于PDSCH解调。UE-specific RS只在PDSCH映射的资源块进行传输。若在端口5以外的其它天线端口的位置传输了6.1节定义的其它物理信道或物理信号，则在端口5的该资源元素位置不传输UE-specific RS R1-090436。.1序列产生UE-specific RS序列定义为其中，为对应PDSCH传输的资源块带宽。伪随机序列在7.2节定义。在每个子帧的起始位置，伪随机序列产生器使用进行初始化，其中由文献4中7.1节定义R1-090439。.2资源映射在一个分配为PDSCH传输的PRB(频域检索为)上，参考信号序列映射到天线端口5的复数调制符号上：普通CP:扩展CP:其中，是PDSCH分配的传输带宽内，一个OFDM符号上UE-Specific RS RE的计数器。cell-specific频偏定义为。映射按照分配给对应PDSCH传输的PRB的频域检索的升序进行。为对应PDSCH传输的带宽(RB数目)。图.2-1给出了普通CP下用于UE-specific RS 的RE图样。图.2-2给出了扩展CP下用于UE-specific RS 的RE图样。表示在天线端口传输参考信号的一个RE。Figure .2-1: UE-specific 参考信号映射(普通CP)Figure .2-2: UE-specific 参考信号映射(扩展CP)6.11同步信号共有504个物理层小区ID，这些物理层小区ID被分成168个小区ID组，每组包含三个不同的ID。每个物理层的小区ID属于并且只属于其中的一个小区ID组。一个物理层小区ID由公式唯一的表示，其中表示小区ID组，范围是0到167，表示在这个小区ID组内的物理层ID，范围是0到2。6.11.1第一同步信号6.11.1.1序列生成用于第一同步信号的由频域的Zadoff-Chu序列生成。 其中Zadoff-Chu根序列索引由表.1-1给出。Table .1-1: Root indices for the primary synchronization signal.Root index 0251292346.11.1.2资源映射序列到资源单元的映射依赖于帧结构。UE不应当假定第一同步信号与任意的下行参考信号在相同的天线端口上发射，UE也不应当假定任意一次的第一同步信号发射都是与其他发射的第一同步信号在相同的天线端口上。序列根据下面的式子映射到资源单元上。对于帧结构1，第一同步信号映射到时隙0和时隙10 的最后一个OFDM符号上。对于帧结构2，第一同步信号映射到子帧1和6的第三个OFDM符号上。第一同步信号映射到OFDM符号上的资源单元上，其中保留，并且不用于传输第一同步信号。6.11.2第二同步信号6.11.2.1序列生成用作第二同步信号的序列是由两个长度为31的二进制序列交叉联接而成，这个交叉生成的序列由与第一同步信号有关的加扰序列进行加扰。由两个长度为31的序列合并而成的第二同步信号在子帧0和子帧5是不同的其中，索引和可以利用物理层小区ID组由下式推出。上面表达式的输出列在表.1-1.中两个序列定义为m序列的两个不同的循环移位。其中, 定义为初始条件为.两个加扰序列依赖与第一同步信号，并且定义为m序列的两个不同的循环移位。其中是在物理层小区组内的物理层ID，并且, 定义为初始条件为：.加扰序列 由m序列的循环移位定义其中从表.1-1获得，并且, 定义为初始条件为Table .1-1: Mapping between physical-layer cell-identity group and the indices and .00134466891210215191362227112355769101310316201372328223366870111410417211382429334377971121510518221392530445388107213161061923140065563991173141710720241411766740101274151810821251422877841111375161910922261433988942121476172011023271444109910431315771821111242814551110101144141678192211225291466121111124515177920231132630147713121213461618802124114051488141313144717198122251151614991514141548182082232611627150101615151649192183242711738151111716161750202284252811849152121817171851212385262911951015313191818195222248627301206111541420191920532325870412171215515212020215424268815122813156162221212255252789261239141571723222223562628903712410151581824232324572729914812511161591925242425582830925912612171602026252526590393610127131816121272626276014947111281419162222827272861259581212915201632329282829623696913130162116424302929306347971014131172216507300264589811151321823166183113656999121613319241672932246671010013171342025-33356781110114181352126-6.11.2.2资源映射序列到资源单元的映射依赖于帧结构，在帧结构类型1的一个子帧或者帧结构类型2的一个半帧中，第二同步信号使用与第一同步信号相同的天线端口。序列应该根据下面的式子映射到资源单元中资源单元 其中满足上面式子的资源单元保留不用作传输第二同步信号。6.12OFDM 基带信号生成在下行时隙的第l个OFDM符号第P个天线端口上发射的时域连续信号定义为：其中，。对于的子载波间隔，变量N2048，对于的子载波间隔，变量N=4096。一个时隙中的OFDM符号应该从开始按照递增的顺序发射，时隙中的OFDM符号在时刻开始发射。对于一个时隙中第一个OFDM符号使用正常CP，其他的OFDM符号使用扩展CP的情况，使用扩展CP的OFDM符号的起始位置与所有的OFDM符号都采用扩展CP是的位置相同。因此在两种CP所对应的OFDM符号之间会有一部分时隙不发射任何信号。表6.12-1列出了将会被用到的。注意：一个时隙中的不同的OFDM符号在某些情况下具有不同的CP长度。Table 6.12-1: OFDM parameters.ConfigurationCyclic prefix length Normal cyclic prefixExtended cyclic prefix6.13调制与上变频图6.13-1给出了每个天线端口上的基带OFDM符号的调制以及上变频处理图，文献6给出了在发射之前的滤波需求。Figure 6.13-1: Downlink modulation.7公共函数7.1调制映射调制映射器以二进制0、1作为输入，生成复值调制符号x=I+jQ,作为输出。7.1.1BPSK对于BPSK调制，一个比特根据表-1映射到复值调制符号x=I+jQTable 7.1.1-1: BPSK modulation mappingI Q017.1.2QPSK对于QPSK调制，一对比特根据表7.1.2-1映射到复值调制符号x=I+jQTable 7.1.2-1: QPSK modulation mappingI Q000110117.1.316QAM对于16QAM调制，一个比特四元组根据表7.1.3-1映射到复值调制符号x=I+jQTable 7.1.3-1: 16QAM modulation mappingI Q00000001001000110100010101100111100010011010101111001101111011117.1.464QAM对于64QAM调制，一个比特六元组根据表7.1.4-1映射到复值调制符号x=I+jQTable 7.1.4-1: 64QAM modulation mappingI QI Q0000001000000000011000010000101000100000111000110001001001000001011001010001101001100001111001110010001010000010011010010010101010100010111010110011001011000011011011010011101011100011111011110100001100000100011100010100101100100100111100110101001101000101011101010101101101100101111101110110001110000110011110010110101110100110111110110111001111000111011111010111101111100111111111117.2伪随机序列生成伪随机序列由一个长度为31的Gold序列定义，输出长度为的序列定义为其中，第一个m序列由进行初始化，第二个m序列由进行初始化，并且初始化的值与该序列的应用有关。8定时8.1上下行帧定时UE应该在先于下行无线帧i的时刻发射相应的上行无线帧，其中0 NTA 20512，对于帧结构类型1，对于帧结构类型2，。注意，并不是一个无线帧内所有的时隙都被发射。一个例子就是TDD系统，一个无线帧中只有一部分时隙被发射。Downlink radio frame #iUplink radio frame #iFigure 8.1-1: Uplink-downlink timing relationAnnex A (informative):Change historyChange historyDateTSG#TSG Doc.CRRevSubject/CommentOldNew2006-09-24-Draft version created-2006-10-09-Updated skeleton2006-10-13-Endorsed by RAN12006-10-23-Inclusion of decision from RAN1#46bis2006-11-06-Updated editors version2006-11-09-Updated editors version2006-11-10-Endorsed by RAN1#472006-11-27-Editors version, including decisions from RAN1#472006-12-14-Updated editors version2007-01-15-Updated editors version2007-01-19-Endorsed by RAN1#47bis2007-02-01-Editors version, including decisions from RAN1#47bis2007-02-12-Updated editors version2007-02-16-Endorsed by RAN1#482007-02-16-Editors version, including decisions from RAN1#482007-02-21-Updated editors version2007-03-03RAN#35RP-070169For information at RAN#352007-04-25-Editors version, including decisions from RAN1#48bis and RAN1 TDD Ad Hoc2007-05-03-Updated editors version2007-05-08-Updated editors version2007-05-11-Updated editors version2007-05-11-Endorsed by RAN1#492007-05-15-Editors version, including decisions from RAN1#492007-06-05-Updated editors version2007-06-25-Endorsed by RAN1#49bis2007-07-10-Editors version, including decisions from RAN1#49bis2007-08-10-Updated editors version2007-08-20-Updated editors version2007-08-24-Endorsed by RAN1#502007-08-27-Editors version, including decisions from RAN1#502007-09-05-Updated editors version2007-09-08RAN#37RP-070729-For approval at RAN#3712/09/07RAN_37RP-070729Approved version28/11/07RAN_38RP-0709490001-Introduction of optimized FS2 for TDD28/11/07RAN_38RP-0709490002-Introduction of scrambling sequences, uplink reference signal sequences, secondary synchronization sequences and control channel processing05/03/08RAN_39RP-08021900031Update of uplink reference-signal hopping, downlink reference signals, scrambling sequences, DwPTS/UpPTS lengths for TDD and control channel processing28/05/08RAN_40RP-0804320004-Correction of the number of subcarriers in PUSCH transform precoding28/05/08RAN_40RP-0804320005-Correction of PHICH mapping28/05/08RAN_40RP-0804320006-Correction of PUCCH resource index for PUCCH format 228/05/08RAN_40RP-08043200073Correction of the predefined hopping pattern for PUSCH28/05/08RAN_40RP-0804320008-Non-binary hashing functions28/05/08RAN_40RP-08043200091PUCCH format 128/05/08RAN_40RP-08043200101CR on Uplink DM RS hopping28/05/08RAN_40RP-08043200121Correction to limitation of constellation size of ACK transmission in PUSCH28/05/08RAN_40RP-08043200151PHICH mapping for one and two antenna ports in extended CP28/05/08RAN_40RP-08043200161Correction of PUCCH in absent of mixed format28/05/08RAN_40RP-0804320017-Specification of CCE size and PHICH resource indication28/05/08RAN_40RP-08043200183Correction of the description of frame structure type 228/05/08RAN_40RP-0804320019-On Deltapucch_shift correction28/05/08RAN_40RP-0804320021-Corrections to Secondary Synchronization Signal Mapping28/05/08RAN_40RP-0804320022-Downlink VRB mapping to PRB for distributed transmission28/05/08RAN_40RP-0804320023-Clarification of modulation symbols to REs mapping for DVRB28/05/08RAN_40RP-08043200241Consideration on the scrambling of PDSCH28/05/08RAN_40RP-0804320025-Corrections to Initialization of DL RS Scrambling28/05/08RAN_40RP-08043200261CR on Downlink RS28/05/08RAN_40RP-0804320027-CR on Uplink RS28/05/08RAN_40RP-08043200281Fixed timing advance offset for LTE TDD and half-duplex FDD28/05/08RAN_40RP-08043200291Timing of random access preamble format 428/05/08RAN_40RP-08043200301Uplink sounding RS bandwidth configuration28/05/08RAN_40RP-0804320031-Use of common RS when UE-specific RS are configured28/05/08RAN_40RP-08043200321Uplink RS Updates28/05/08RAN_40RP-0804320033-Orthogonal cover sequence for shortened PUCCH format 1a and 1b28/05/08RAN_40RP-0804320034-Clarification of PDCCH mapping28/05/08RAN_40RP-0804320035-TDD PRACH time/frequency mapping28/05/08RAN_40RP-0804320036-Cell Specific Uplink Sounding RS Subframe Configuration28/05/08RAN_40RP-0804320038-PDCCH length for carriers with mixed MBSFN and Unicast Traffic28/05/08RAN_40RP-0804320040-Correction to the scrambling sequence generation for PUCCH, PCFICH, PHICH, MBSFN RS and UE specific RS28/05/08RAN_40RP-0804320041-PDCCH coverage in narrow bandwidths28/05/08RAN_40RP-0804320042-Closed-Loop and Open-Loop Spatial Multiplexing28/05/08RAN_40RP-0804320043-Removal of small-delay CDD09/09/08RAN_41RP-080668481Frequency Shifting of UE-specific RS09/09/08RAN_41RP-080668491Correction of PHICH to RE mapping in extended CP subframe09/09/08RAN_41RP-08066850-Corrections to for handling remaining Res09/09/08RAN_41RP-08066851-PRACH configuration for frame structure type 109/09/08RAN_41RP-080668522Correction of PUCCH index generation formula09/09/08RAN_41RP-08066853-Orthogonal cover sequence for shortened PUCCH format 1a and 1b09/09/08RAN_41RP-08066854-Correction of mapping of ACK/NAK to binary bit values09/09/08RAN_41RP-080668562Remaining issues on SRS hopping09/09/08RAN_41RP-080668571Correction of n_cs(n_s) and OC/CS remapping for PUCCH formats 1/1a/1b and 2/2a/2b 09/09/08RAN_41RP-08066859-Corrections to Rank information scrambling in Uplink Shared Channel09/09/08RAN_41RP-08066860-Definition on the slot number for frame structure type 209/09/08RAN_41RP-08066861-Correction of the Npucch sequence upper limit for the formats 1/1a/1b09/09/08RAN_41RP-080668621Clarifications for DMRS parameters09/09/08RAN_41RP-08066863-Correction of n_prs09/09/08RAN_41RP-080668641Introducing missing L1 parameters to 36.21109/09/08RAN_41RP-080668653Clarification on reception of synchronization signals09/09/08RAN_41RP-08066866-Correction to the downlink/uplink timing09/09/08RAN_41RP-08066867-ACK/NACK Scrambling scheme on PUCCH09/09/08RAN_41RP-08066868-DCI format1C09/09/08RAN_41RP-08066869-Refinement for REG Definition for n = 409/09/08RAN_41RP-08066871-Correcting Ncs value for PRACH preamble format 0-309/09/08RAN_41RP-08066873-Correction of the half duplex timing advance offset value09/09/08RAN_41RP-08066874-Correction to Precoding for Transmit Diversity09/09/08RAN_41RP-08066875-Clarification on number of OFDM symbols used for PDCCH09/09/08RAN_41RP-08066877-Number of antenna ports for PDSCH 09/09/08RAN_41RP-08066878-Correction to Type 2 PUSCH predetermined hopping for Nsb=1 operation09/09/08RAN_41RP-08066879-PRACH frequency location03/12/08RAN_42RP-081074701Correction for the definition of UE-specific reference signals03/12/08RAN_42RP-081074722Corrections to precoding for large delay CDD03/12/08RAN_42RP-08107480-Correction to the definition of nbar_oc for extended CP03/12/08RAN_42RP-081074811Specification of reserved REs not used for RS03/12/08RAN_42RP-081074822Clarification of the random access preamble transmission timing03/12/08RAN_42RP-081074831Indexing of PRACH resources within the radio frame 03/12/08RAN_42RP-081074846Alignment of RAN1/RAN2 specification03/12/08RAN_42RP-08107486-Clarification on scrambling of ACK/NAK bits for PUCCH format 2a/2b03/12/08RAN_42RP-08107487-Correction of introduction of shortened SR03/12/08RAN_42RP-08107488-Corrections to 36.21103/12/08RAN_42RP-08107489-Clarification on PUSCH DM RS Cyclic Shift Hopping03/12/08RAN_42RP-081074921Correction to the uplink DM RS assignment03/12/08RAN_42RP-08107493-Clarify the RNTI used in scrambling sequence initialization03/12/08RAN_42RP-081074941On linkage Among UL Power Control Parameters03/12/08RAN_42RP-08107495-Clarification on PUSCH pre-determined hopping pattern03/12/08RAN_42RP-08107496-Clarification of SRS sequence-group and base sequence number03/12/08RAN_42RP-081074971SRS subframe configuration03/12/08RAN_42RP-08107498-Remaining SRS details for TDD03/12/08RAN_42RP-08107499-Clarifying UL VRB Allocation03/12/08RAN_42RP-081074100-Clarification on PUCCH resource hopping03/12/08RAN_42RP-081074101-Correction for definition of Qm and a pseudo code syntax error in Scrambling.03/12/08RAN_42RP-0810741051Remaining Issues on SRS of TDD03/12/08RAN_42RP-081074106-Correction of reference to RAN4 specification of supported uplink bandwidth03/12/08RAN_42RP-081074107-General corrections to SRS03/12/08RAN_42RP-0810741092Correction to PCFICH specification03/12/08RAN_42RP-0810741101Correction to Layer Mapping for Transmit Diversity with Four Antenna Ports03/12/08RAN_42RP-081074111-Correction of the mapping of cyclic shift filed in DCI format 0 to the dynamic cyclic shift offset03/12/08RAN_42RP-081074112-DRS collision handling03/12/08RAN_42RP-081074113-Clarification to enable reuse of non-active PUCCH CQI RBs for PUSCH03/12/08RAN_42RP-0810741141PUSCH Mirror Hopping operation03/12/08RAN_42RP-0810741081Extended and normal cyclic prefix in DL and UL for LTE TDD04/03/09RAN_43RP-0902341151Alignment of PRACH configuration index for FS type 1 and type 2 04/03/09RAN_43RP-0902341181Clarification for DRS Collision handling04/03/09RAN_43RP-0902341211Removing inverse modulo operation04/03/09RAN_43RP-0902341231Clarification on the use of preamble format 404/03/09RAN_43RP-090234124-Clarification of RNTI used in scrambling sequence04/03/09RAN_43RP-0902341251Clarifying PDCCH RE mapping04/03/09RAN_43RP-090234126-Correction of preamble format 4 timing04/03/09RAN_43RP-0902341272Corrections to SRS04/03/09RAN_43RP-0902341282Clarification of PDSCH Mapping to Resource Elements04/03/09RAN_43RP-0902341291Alignment with correct ASN1 parameter names04/03/09