LTE中文協(xié)議LTE-3GPP-36.213-860(中文版-)

1、PAGE72PAGE723GPP TS 36.213 V8.6.0 (2009-03)Technical Specification3rd Generation Partnership Project;Technical Specification Group Radio Access Network;Evolved Universal Terrestrial Radio Access (E-UTRA);Physical layer procedures(Release 8)The present document has been developed within the 3rd Gener

2、ation 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 Organisational Partners and shall not be implemented. This Specification is provided for future development work within 3GPP only.

3、 The Organisational 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 Organisational Partners Publications Offices.KeywordsUMTS, radio, layer 13GPPPostal address3GPP support office addres

4、s650 Route des Lucioles Sophia AntipolisValbonne FranceTel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16InternetCopyright NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media. 2009, 3GPP Organiza

5、tional Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).All rights reserved.UMTS is a Trade Mark of ETSI registered for the benefit of its members3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational PartnersLTE is a Trade Mark of ETSI currently being regis

6、tered for the benefit of its Members and of the 3GPP Organizational PartnersGSM and the GSM logo are registered and owned by the GSM AssociationContents TOC o 1-9 Foreword PAGEREF _Toc224743538 h 51Scope PAGEREF _Toc224743539 h 62References PAGEREF _Toc224743540 h 63Definitions, symbols, and abbrevi

7、ations PAGEREF _Toc224743541 h 73.1Symbols PAGEREF _Toc224743542 h 73.2Abbreviations PAGEREF _Toc224743543 h 74Synchronisation procedures PAGEREF _Toc224743544 h 84.1Cell search PAGEREF _Toc224743545 h 84.2Timing synchronisation PAGEREF _Toc224743546 h 84.2.1Radio link monitoring PAGEREF _Toc2247435

8、47 h 84.2.2Inter-cell synchronisation PAGEREF _Toc224743548 h 84.2.3Transmission timing adjustments PAGEREF _Toc224743549 h 85Power control PAGEREF _Toc224743550 h 95.1Uplink power control PAGEREF _Toc224743551 h 95.1.1Physical uplink shared channel PAGEREF _Toc224743552 h 9UE behaviour PAGEREF _Toc

9、224743553 h 9Power headroom PAGEREF _Toc224743554 h 125.1.2Physical uplink control channel PAGEREF _Toc224743555 h 12UE behaviour PAGEREF _Toc224743556 h 125.1.3Sounding Reference Symbol PAGEREF _Toc224743557 h 14UE behaviour PAGEREF _Toc224743558 h 145.2Downlink power allocation PAGEREF _Toc2247435

10、59 h 155.2.1 eNodeB Relative Narrowband TX Power restrictions PAGEREF _Toc224743560 h 166Random access procedure PAGEREF _Toc224743561 h 166.1Physical non-synchronized random access procedure PAGEREF _Toc224743562 h 166.1.1Timing PAGEREF _Toc224743563 h 176.2Random Access Response Grant PAGEREF _Toc

11、224743564 h 177 Physical downlink shared channel related procedures PAGEREF _Toc224743565 h 187.1UE procedure for receiving the physical downlink shared channel PAGEREF _Toc224743566 h 197.1.1 Single-antenna port scheme PAGEREF _Toc224743567 h 217.1.2 Transmit diversity scheme PAGEREF _Toc224743568

12、h 217.1.3 Large delay CDD scheme PAGEREF _Toc224743569 h 227.1.4 Closed-loop spatial multiplexing scheme PAGEREF _Toc224743570 h 227.1.5 Multi-user MIMO scheme PAGEREF _Toc224743571 h 227.1.6 Resource allocation PAGEREF _Toc224743572 h 22Resource allocation type 0 PAGEREF _Toc224743573 h 22Resource

13、allocation type 1 PAGEREF _Toc224743574 h 23Resource allocation type 2 PAGEREF _Toc224743575 h 247.1.7 Modulation order and transport block size determination PAGEREF _Toc224743576 h 25Modulation order determination PAGEREF _Toc224743577 h 25Transport block size determination PAGEREF _Toc224743578 h

14、 26.1Transport blocks not mapped to two-layer spatial multiplexing PAGEREF _Toc224743579 h 27.2Transport blocksmapped to two-layer spatial multiplexing PAGEREF _Toc224743580 h 32.3Transport blocks mapped for DCI Format 1C PAGEREF _Toc224743581 h 33Redundancy Version determination for Format 1C PAGER

15、EF _Toc224743582 h 337.2UE procedure for reporting channel quality indication (CQI), precoding matrix indicator (PMI) and rank indication (RI) PAGEREF _Toc224743583 h 337.2.1Aperiodic CQI/PMI/RI Reporting using PUSCH PAGEREF _Toc224743584 h 367.2.2Periodic CQI/PMI/RI Reporting using PUCCH PAGEREF _T

16、oc224743585 h 407.2.3Channel quality indicator (CQI) definition PAGEREF _Toc224743586 h 467.2.4Precoding Matrix Indicator (PMI) definition PAGEREF _Toc224743587 h 487.3UE procedure for reporting ACK/NACK PAGEREF _Toc224743588 h 498Physical uplink shared channel related procedures PAGEREF _Toc2247435

17、89 h 528.1Resource Allocation for PDCCH DCI Format 0 PAGEREF _Toc224743590 h 548.2UE sounding procedure PAGEREF _Toc224743591 h 558.3UE ACK/NACK procedure PAGEREF _Toc224743592 h 578.4UE PUSCH Hopping procedure PAGEREF _Toc224743593 h 588.4.1 Type 1 PUSCH Hopping PAGEREF _Toc224743594 h 598.4.2 Type

18、 2 PUSCH Hopping PAGEREF _Toc224743595 h 598.5UE Reference Symbol procedure PAGEREF _Toc224743596 h 608.6Modulation order, redundancy version and transport block size determination PAGEREF _Toc224743597 h 608.6.1 Modulation order and redundancy version determination PAGEREF _Toc224743598 h 608.6.2 T

19、ransport block size determination PAGEREF _Toc224743599 h 618.6.3 Control information MCS offset determination PAGEREF _Toc224743600 h 618.7UE Transmit Antenna Selection PAGEREF _Toc224743601 h 639Physical downlink control channel procedures PAGEREF _Toc224743602 h 649.1UE procedure for determining

20、physical downlink control channel assignment PAGEREF _Toc224743603 h 649.1.1 PDCCH Assignment Procedure PAGEREF _Toc224743604 h 649.1.2 PHICH Assignment Procedure PAGEREF _Toc224743605 h 659.2PDCCH validation for semi-persistent scheduling PAGEREF _Toc224743606 h 6610Physical uplink control channel

21、procedures PAGEREF _Toc224743607 h 6710.1UE procedure for determining physical uplink control channel assignment PAGEREF _Toc224743608 h 6710.2Uplink ACK/NACK timing PAGEREF _Toc224743609 h 72Annex A (informative):Change history PAGEREF _Toc224743610 h 74ForewordThis Technical Specification (TS) has

22、 been produced by the 3rd Generation Partnership Project (3GPP).The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of this present document, it will be re-released by the TSG with an iden

23、tifying change of release date and an increase in version number as follows:Version x.y.zwhere:xthe first digit:1presented to TSG for information;2presented to TSG for approval;3or greater indicates TSG approved document under change control.ythe second digit is incremented for all changes of substa

24、nce, i.e. technical enhancements, corrections, updates, etc.zthe third digit is incremented when editorial only changes have been incorporated in the document.1ScopeThe present document specifies and establishes the characteristics of the physicals layer procedures in the FDD and TDD modes of E-UTRA

25、.2ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the present document.References are either specific (identified by date of publication, edition number, version number, etc.) or nonspecific.For a specific reference, subsequent rev

26、isions do not apply.For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.13GPP TR 21.905: “Voca

27、bulary for 3GPP Specifications”23GPP TS 36.201: “Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Layer General Description”33GPP TS 36.211: “Evolved Universal Terrestrial Radio Access (E-UTRA); Physical channels and modulation”43GPP TS 36.212: “Evolved Universal Terrestrial Radio Acces

28、s (E-UTRA); Multiplexing and channel coding”53GPP TS 36.214: “Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer Measurements”63GPP TS 36.101: “Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception”73GPP TS 36.104: “Evolved Univers

29、al Terrestrial Radio Access (E-UTRA); Base Station (BS) radio transmission and reception”83GPP TS36.321, “Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification” 93GPP TS36.423, “Evolved Universal Terrestrial Radio Access (E-UTRA); X2 Application Prot

30、ocol (X2AP)” 103GPP TS36.133, “Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management”113GPP TS36.331, “Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC) protocol specification”3Definitions, symbols, and abbreviation

31、s3.1SymbolsFor the purposes of the present document, the following symbols apply:Downlink bandwidth configuration, expressed in units of as defined in 3 Uplink bandwidth configuration, expressed in units of as defined in 3 Number of SC-FDMA symbols in an uplink slot as defined in 3Resource block siz

32、e in the frequency domain, expressed as a number of subcarriers as defined in 3Basic time unit as defined in 33.2AbbreviationsFor the purposes of the present document, the following abbreviations apply.ACKAcknowledgementBCHBroadcast ChannelCCEControl Channel ElementCQIChannel Quality IndicatorCRCCyc

33、lic Redundancy CheckDAIDownlink Assignment IndexDLDownlinkDTXDiscontinuous TransmissionEPREEnergy Per Resource Element MCSModulation and Coding SchemeNACKNegative AcknowledgementPBCHPhysical Broadcast ChannelPCFICHPhysical Control Format Indicator ChannelPDCCHPhysical Downlink Control ChannelPDSCHPh

34、ysical Downlink Shared ChannelPHICHPhysical Hybrid ARQ Indicator ChannelPRACHPhysical Random Access ChannelPRBPhysical Resource BlockPUCCHPhysical Uplink Control ChannelPUSCHPhysical Uplink Shared ChannelQoSQuality of ServiceRBGResource Block GroupREResource ElementRPFRepetition FactorRSReference Si

35、gnalSIRSignal-to-Interference RatioSINRSignal to Interference plus Noise Ratio SPS C-RNTISemi-Persistent Scheduling C-RNTISRSSounding Reference SymbolTATime alignmentTTITransmission Time IntervalUEUser Equipment ULUplinkUL-SCHUplink Shared ChannelVRBVirtual Resource Block4同步過程4.1小區(qū)搜索小區(qū)搜索是指UE在小區(qū)中獲取時間

36、和頻率同步并檢測小區(qū)物理層Cell ID的過程。E-UTRA小區(qū)搜索支持包含6個以上資源塊的傳輸帶寬范圍內(nèi)的搜索。通過主同步信號和輔同步信號的發(fā)送實現(xiàn)下行鏈路的小區(qū)搜索。4.2時間同步4.2.1無線鏈路監(jiān)測UE應(yīng)該監(jiān)測服務(wù)小區(qū)無線鏈路的質(zhì)量，因為UE要把探測到的同步狀況傳給高層， 在非DRX（Discontinuous Receptio，省電模式）模式操作，UE的物理層在每個無線幀都要檢測無線鏈路質(zhì)量，并通過前一時間段200ms周期測得 ，這個無線鏈路質(zhì)量的檢測依賴于門限Qout and Qin（在10相關(guān)測試中被隱含定義）。在DRX模式操作，UE的物理層至少每個DRX階段都要檢測無線鏈路質(zhì)量

37、，并通過之前的周期10中定義測得。這個無線鏈路質(zhì)量的檢測依賴于門限Qout and Qin（在10相關(guān)測試中被隱含定義）。UE的物理層 在檢測無線鏈路質(zhì)量的無線幀中指示同步情況并上報給高層：當(dāng)無線鏈路質(zhì)量比門限值Qout差時，指示為失同步；當(dāng)無線鏈路質(zhì)量好于Qin時，指示為同步。4.2.2小區(qū)間同步例如，用于有多播物理信道的小區(qū)。4.2.3傳輸定時校正收到定時提前命令后，UE應(yīng)該調(diào)整PUCCH/PUSCH/SRS的上行發(fā)送時間。定時提前命令表示為16的整數(shù)倍,它和當(dāng)前上行時間相關(guān)。隨機接入前導(dǎo)的起始時間在211中設(shè)定。隨機接入響應(yīng)中，時間提前命令TA,為11bit，通過索引值TA = 0, 1

38、, 2, ., 1282,來表示NTA值，其中時間序列的數(shù)據(jù)由NTA = TA 16給出。NTA在3中定義。其它情況下，時間提前命令TA,為6bit，指示當(dāng)前NTA值相對于新的NTA值NTA,new,的校正，其中索引值TA = 0, 1, 2,., 63, NTA,new = NTA,old + (TA 31)16.這里，NTA 值的校正是通過一個正的或負的數(shù)據(jù)，根據(jù)給出的數(shù)據(jù)分別來指示上行傳輸定時的時間提前或延遲子幀n上接收到時間提前命令，相應(yīng)的定時校正從子幀n+6的開始來進行。當(dāng)由于時間校正，UE的子幀n和n+1中傳輸?shù)纳闲蠵UCCH/PUSCH/SRS有重疊，UE應(yīng)傳輸完整的子幀n，而不

39、傳輸子幀n+6的重疊部分。如果接收到的下行定時發(fā)生改變，沒有10中所提到的時間提前要求，上行定時校正不再補償或只是部分補償,那么UE隨之改變NTA。5功率控制下行功率控制決定單位資源元素上的功率值，可見是在頻域進行功率分配再進行時域加CP，同時功率分配是進行在子載波上，是對各個復(fù)信號上的幅度的調(diào)整。上行功率控制決定所傳輸?shù)腄FT-SOFDM符號上的功率值。5.1上行功率控制上行功率控制控制著不同物理信道的發(fā)送功率值。關(guān)于小區(qū)級的過載指示 (OI) 高干擾指示 (HII) 的干擾協(xié)調(diào)定義在參考文獻9。5.1.1上行物理共享信道UE行為每個子幀i 的物理上行信道PUSCH的發(fā)送功率 設(shè)定計算如下：

40、 dBm其中：UE最大發(fā)送功率，23dBm左右，見 6的6.2.2節(jié)。：在子幀i中PUSCH所占的帶寬，單位是資源塊RB。： = +。高層決定j的取值，j=0 時，對應(yīng)半靜態(tài)授權(quán)的PUSCH傳輸或重傳；j=1時，對應(yīng)動態(tài)授權(quán)的PUSCH傳輸或重傳；j=2時，對應(yīng)隨機接入響應(yīng)授權(quán)的PUSCH傳輸或重傳，此時， ，其中，和由高層信令配置；當(dāng)j =0 或1時, 是一個3bit高層配置的小區(qū)級參數(shù)； 當(dāng) j=2時, ；（部分功率補償因子）PL ：下行路損估計值。通過下式計算出，PL = referenceSignalPower higher layer filtered RSRP。其中 referen

41、ceSignalPower 由高層配置，RSRP 在參考文檔5中定義，而higher layer filter在11中配置。：公式如下，。其中或者，其配置情況由高層配置用戶級參數(shù)deltaMCS-Enabled決定。當(dāng)中只有控制數(shù)據(jù)時，；其它情況等于 。 等于碼塊數(shù), 等于第個碼塊的大小，等于加上CRC位的比特數(shù)，等于資源元素由公式得出。其中, 和 在參考文檔4給出，并且, 和在初始化的時候獲得。當(dāng)中只有控制數(shù)據(jù)時 ；其它情況等于。 ：用戶級參數(shù)，對應(yīng)于DCI0和聯(lián)合編碼DCI3/3A的PDCCHTPC命令。DCI0使用C-RNTI加擾CRC，DCI3/3A使用TPC-PUSCH-RNTI加擾

42、CRC。當(dāng)前子幀PUSCH的功率調(diào)整值等于，定義如下：當(dāng)累積修正Accumulation-enabled 使能時，或者在DCI0調(diào)整情況下 其中是在DCI0或DCI3/3A傳下來的信令TPC，來自對應(yīng)PDCCH的子幀為 , 而且是最初的累積值。 的值定義如下: 在FDD情況下,= 4在TDD UL/DL配比 1-6時, 由表Table -1給出。在TDD UL/DL 配比 0時如果子幀2和7的PUSCH是PDCCH的DCI0調(diào)度的，且DCI0中的UL index域高位設(shè)為1時, = 7。其它PUSCH傳輸情況時, 由表-1設(shè)置。 除非處在DRX狀態(tài)，UE會不斷地在每個子幀檢測DCI0和DCI3

43、/3A分別使用C-RNTI和TPC-PUSCH-RNTI。如果DCI0和DCI3/3A都被檢測成功，UE會選擇DCI0的TPC用作。如果沒有TPC命名下發(fā)或者處在DRX狀態(tài)下以及沒有上行子幀時，。的取值單位為dB，其和DCI0中TPC取值對應(yīng)關(guān)系見表-2。的取值單位為dB，其和DCI3/3A中TPC取值對應(yīng)關(guān)系見表-2或者表-3，具體用戶的TPC由高層配置的TPC-Index決定。如果UE到達最大發(fā)送功率時，正的功率修正值TPC不再有效。如果UE到達最小發(fā)送功率時，負的功率修正值TPC不再有效。UE應(yīng)該在以下情況復(fù)位累加值：當(dāng)絕對功率修正值TPC命令收到時；當(dāng)收到信令時；當(dāng)UE收到隨機接入響應(yīng)

44、消息時；當(dāng)累積修正Accumulation-enabled 不使能時，其中由上傳送下來決定的值等于：在 FDD情況下,= 4在 TDD UL/DL配比1-6時, 由表-1決定。在TDD UL/DL配比0如果子幀2和7的PUSCH是PDCCH的DCI0調(diào)度的，且DCI0中的UL index域高位設(shè)為1時, = 7。其它PUSCH傳輸情況時, 由表-1設(shè)置。的取值單位為dB，其和DCI0中TPC取值對應(yīng)關(guān)系見表-2。當(dāng)子幀DCI0沒有檢測到、處在DRX狀態(tài)以及TDD制式下無上行子幀時：。在累積修正和絕對值修正情況下，都須滿足下面設(shè)定：如果收到高層命令，否則其中 是隨機接入響應(yīng)專有的TPC命令，參見

45、6.2節(jié)， 來自高層，對應(yīng)總功率放大范圍，從第一個preamble到最后一個preamble結(jié)束。Table -1 for TDD configuration 0-6TDD UL/DLConfigurationsubframe number i01234567890- -674-6741-64-64-2-4-4-3-444-4-44-5-4-6-775-77-Table -2: Mapping of TPC Command Field in DCI format 0/3 to absolute and accumulated values.TPC Command Field inDCI for

46、mat 0/3Accumulated dBAbsolute dB only DCI format 00-1-410-1211334Table -3: Mapping of TPC Command Field in DCI format 3A to values.TPC Command Field inDCI format 3A dB0-111功率池UE功率池定義如下： dB其中, , , , , PL, and 如定義。 功率池應(yīng)該在以下這個范圍之內(nèi)40; -23 dB，單位步長dB，由物理層報給高層。5.1.2上行物理控制信道UE行為UE側(cè)對發(fā)送功率定義如下： dBm其中 ：UE最大發(fā)送功率

47、，23dBm左右，見 6的6.2.2節(jié)。：高層配置，每個一個配置的Each 值都是格式UCI1a的相對值，其中UCI1a不做調(diào)整，具體配置范圍參見表5.4-1 3。：PUCCH格式關(guān)系值，其中對應(yīng)信道質(zhì)量信息比特如 4，HARQ比特數(shù)。對于PUCCH格式1,1a and 1b： 對于PUCCH格式2, 2a, 2b 和正常CP情況下： 對于PUCCH格式2和擴展CP情況下： ：是高層配置，等于 + 。：是UE專屬修正參數(shù)，對應(yīng)于TPC命令，包括在DCI1A/1B/1D/1/2A/2或者DCI 3/3A中，他們的CRC分別用C-RNTI或者TPC-PUCCH-RNTI。UE會在PDCCH中檢測D

48、CI 3/3A或者DCI1A/1B/1D/1/2A/2的TPC命令，除非在DRX狀態(tài)。如果UE檢測PDCCH中DCI 1A/1B/1D/1/2A/2的TPC成功，UE使用調(diào)整發(fā)送功率值否則如果UE檢測DCI 3/3A成功，UE利用TPC的調(diào)整，否則 = 0 dB.，其中是當(dāng)前幀PUCCH的發(fā)送功率的調(diào)整值大小， 在FDD情況下, and .在TDD情況下，和值由表10.1-1給出。dB值由信令PDCCH的DCI1A/1B/1D/1/2A/2中TPC對應(yīng)給出，參見表-1。dB值由信令PDCCH的DCI3/3A中TPC對應(yīng)給出，參見表-1或者-2。高層半靜態(tài)配置。初始值由以下定義：如果高層配置，

49、否則其中 是隨機接入響應(yīng)專有的TPC命令，參見6.2節(jié)。 來自高層，對應(yīng)總功率放大范圍，從第一個preamble到最后一個preamble結(jié)束。如果UE已經(jīng)達到最大發(fā)送功率值，正的TPC不再有效。如果UE已經(jīng)達到最小發(fā)送功率值，負的TPC不再有效。UE應(yīng)該在以下情況下復(fù)位初始累加值小區(qū)更改正在進入或退出RRC激活狀態(tài)收到UE收到隨機接入響應(yīng)消息TDD制式下，非上行發(fā)送子幀時， Table -1: Mapping of TPC Command Field in DCI format 1A/1B/1D/1/2A/2/3 to values.TPC Command Field inDCI forma

50、t 1A/1B/1D/1/2A/2/3 dB0-1102133Table -2: Mapping of TPC Command Field in DCI format 3A to values.TPC Command Field inDCI format 3A dB0-1115.1.3偵聽參考符號UE行為UE發(fā)送偵聽參考信號功率定義如下： dBm其中 ：UE最大發(fā)送功率，23dBm左右，見 6的6.2.2節(jié)。當(dāng)時, 是一個4比特用戶級的半靜態(tài)配置參數(shù)， 由高層配置，步長 1dB，范圍 -3, 12 dB.當(dāng)時,是一個4比特用戶級的半靜態(tài)配置參數(shù)，高層配置，步長1.5dB，范圍-10.5,12

51、dB。：是在子幀i上SRS的傳輸帶寬的資源塊個數(shù)。：是當(dāng)前PUSCH功率控制調(diào)整值，參見。 和 是和節(jié)里參數(shù)一致，。5.2下行功率分配eNodeB決定下行傳輸在每個資源元素上的功率值。 當(dāng)高層配置RS EPRE不發(fā)生變化時， UE可以假定下行小區(qū)參考信號的在每個資源元素發(fā)送功率（）不變，進行的物理信道相對于參考信號的功率分配。下行參考信號的EPRE由高層配置的參數(shù)Reference-signal-power 決定。 下行參考信號傳輸功率是在運營帶寬下所有資源元素上功率的線性平均。PDSCH EPRE對RS EPRE的比值定義兩個參數(shù) 、，具體定義方法參見表5.2-2。其中和是用戶級參數(shù)。UE

52、可以在調(diào)制方式16 QAM, 64 QAM, 和多層空間復(fù)用、多用戶傳輸時： dB當(dāng)UE收到PDSCH 數(shù)據(jù)，使用天線傳輸分集的預(yù)編碼矩陣（參見 3）。 = dB 其他。其中除MU-MIMO外，= 0 dB ，是用戶級參數(shù)。如果UE-specific 參考信號RS是對應(yīng)在PRB上，在每個OFDM上PDSCH EPRE對UE-specific RS EPRE是相等的，其中比例等于0 dB。小區(qū)配置比值由表5.2-1給出，這個由高層配置，根據(jù)天線的配置變化而變化。Table 5.2-1: The cell-specific ratio for 1, 2, or 4 cell specific an

53、tenna ports One Antenna PortTwo and Four Antenna Ports 015/414/5123/53/432/51/2對于16QAM或64QAM調(diào)制的PMCH，比值PMCH EPRE 對 MBSFN RS EPRE 等于0 dB。Table 5.2-2: OFDM symbol indices within a slot where the ratio of the corresponding PDSCH EPRE to the cell-specific RS EPRE is denoted by or Number of antenna portsO

54、FDM symbol indices within a slot where the ratio of the corresponding PDSCH EPRE to the cell-specific RS EPRE is denoted by OFDM symbol indices within a slot where the ratio of the corresponding PDSCH EPRE to the cell-specific RS EPRE is denoted by Normal cyclic prefixExtended cyclic prefixNormal cy

55、clic prefixExtended cyclic prefixOne or two1, 2, 3, 5, 61, 2, 4, 50, 40, 3Four2, 3, 5, 62, 4, 50, 1, 40, 1, 35.2.1 eNodeB相關(guān)窄帶發(fā)送功率限制相關(guān)窄帶TX發(fā)送功率限制上報值 定義如下：其中是專用用戶最大的PDSCH RE的EPRE值，不包括參考信號RE上的功率（），在天線p 口允許的時間里；是物理資源塊號，; 可以取下列值之一dB 并且其中 是基站的最大輸出功率，定義參見參考文獻7, 而, 和 在參考文獻3定義。 6隨機接入過程在非同步物理隨機接入過程初始化之前，層1會從高層

56、獲得以下信息：隨機接入信道參數(shù)(PRACH配置，頻域位置，前導(dǎo)格式)用來決定根序列，以及當(dāng)前小區(qū)的前導(dǎo)序列集合的循環(huán)移位的參數(shù) (根序列表的索引，循環(huán)移位 ()，集合的類型(unrestricted or restricted set)6.1物理層非同步隨機接入過程從物理層看，層1的隨機接入過程包括隨機接入前導(dǎo)的發(fā)送和隨機接入的響應(yīng)。剩余信息由高層調(diào)度在共享信道上傳輸，它不在層1的隨機接入過程中考慮。一個隨機接入信道占據(jù)一個子幀或多個連續(xù)子幀中為隨機接入前導(dǎo)傳輸預(yù)留的6個資源塊。eNodeB 允許在為隨機接入前導(dǎo)傳輸預(yù)留的資源塊上調(diào)度數(shù)據(jù)。層1的隨機接入過程有如下步驟：若從高層接收到一個前導(dǎo)傳

57、輸?shù)恼埱?，?的過程就被觸發(fā)。高層的請求同時指示如下參數(shù)：前導(dǎo)序號, 目標(biāo)前導(dǎo)接收功率(PREAMBLE_RECEIVED_TARGET_POWER)，對應(yīng)的RA-RNTI和PRACH資源前導(dǎo)發(fā)送功率PPRACH由下式確定：PPRACH = min, PREAMBLE_RECEIVED_TARGET_POWER + PL_dBm, 其中 是6中定義的給UE配置的發(fā)送功率。PL 是UE計算的下行路損估計。根據(jù)前導(dǎo)序號在前導(dǎo)序列集合中選擇一個前導(dǎo)序列。在指示的PRACH資源上，使用選定的前導(dǎo)序列，以功率PPRACH發(fā)送一個前導(dǎo)。在高層控制的時間窗內(nèi) (see 8, clause 5.1.4)，UE

58、在指示的RA-RNTI上檢測PDCCH。如果檢測到，則把相對應(yīng)的PDSCH傳輸塊提供給高層。高層解析該傳輸塊，然后指示20比特的UL-SCH授權(quán)給物理層。進一步的處理見6.2節(jié)。6.1.1定時對于層1隨機接入過程，在隨機接入前導(dǎo)發(fā)送之后，UE按照如下幾條規(guī)則進行上行發(fā)送定時：如果第n子幀時，檢測到對應(yīng)RA-RNTI的PDCCH，并且其對應(yīng)的DL-SCH傳輸塊包含對已發(fā)的前導(dǎo)序列的響應(yīng)。那么如果UL delay域為0，UE會在滿足, 的第一個子幀按照響應(yīng)中的消息發(fā)送UL-SCH傳輸塊。如果UL delay域為1，UE會延遲PUSCH到下一個可用的上行子幀才發(fā)送。如果第n子幀時，檢測到對應(yīng)RA-R

59、NTI的PDCCH，但是其對應(yīng)的DL-SCH傳輸塊不包含對已發(fā)的前導(dǎo)序列的響應(yīng)。如果高層仍然要求，UE將在不遲于第子幀發(fā)送一個新的前導(dǎo)序列。如果在隨機接入響應(yīng)窗的最后一個子幀，即第n子幀時，沒有檢測到隨機接入響應(yīng)。如果高層仍然要求，UE將在不遲于第子幀發(fā)送一個新的前導(dǎo)序列。如果隨機接入過程是在第n子幀被指示下行數(shù)據(jù)達到的PDCCH觸發(fā)，如果高層要求，UE將在滿足, 的第一個有可用PRACH資源的子幀發(fā)送隨機接入前導(dǎo)。6.2隨機接入響應(yīng)授權(quán)高層指示20比特UL Grant給物理層，該授權(quán)在8中定義。它們是物理層的隨機接入響應(yīng)授權(quán)。20比特內(nèi)容從MSB到LSB為：- 跳頻指示（Hopping fl

60、ag） 1 bit- 固定長度的資源分配（Fixed size resource block assignment） 10 bits- 截短的調(diào)制和編碼方案（Truncated modulation and coding scheme） 4 bits- 被調(diào)度的PUSCHD的發(fā)送功率控制指令（TPC command for scheduled PUSCH） 3 bits- UL delay 1 bit- CQI request 1 bit如果隨機接入響應(yīng)授權(quán)中的frequency hopping (FH)域為1，UE將執(zhí)行PUSCH跳頻，否則PUSCH不跳頻。當(dāng)hopping flag置1時，