1、 ETSI TS 101 851-2 V1.2.1 (2006-01)Technical Specification Satellite Earth Stations and Systems (SES);Satellite Component of UMTS/IMT 2000; G-family;Part 2: Multiplexing and channel coding(S-UMTS-A 25.212)ETSI ETSI TS 101 851-2 V1.2.1 (2006-01) 2 Reference RTS/SES-00254-2 Keywords MES, MSS, satellit
2、e, UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individual copies of the present docume
3、nt can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute
4、, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI
5、 documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by writte
6、n permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2006. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMand the TIPHON logo are
7、Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TS 101 851-2 V1.2.1 (2006-01) 3 Contents Intellectual Property Rights5 Foreword.5 Introduction 5
8、1 Scope 7 2 References 7 3 Definitions, symbols and abbreviations .8 3.1 Definitions8 3.2 Symbols8 3.3 Abbreviations .9 4 Multiplexing, channel coding and interleaving9 4.1 General .9 4.2 General coding/multiplexing of TrCHs10 4.2.1 CRC attachment13 4.2.1.1 CRC Calculation .13 4.2.1.2 Relation betwe
9、en input and output of the CRC attachment block.13 4.2.2 Transport block concatenation and code block segmentation.14 4.2.2.1 Concatenation of transport blocks.14 4.2.2.2 Code block segmentation 14 4.2.3 Channel coding .15 4.2.3.1 Convolutional coding16 4.2.3.2 Turbo coding.16 4.2.3.2.1 Turbo coder
10、.16 4.2.3.2.2 Trellis termination for Turbo coder .17 4.2.3.2.3 Turbo code internal interleaver17 4.2.3.3 Concatenation of encoded blocks21 4.2.4 Radio frame size equalisation .21 4.2.5 1stinterleaving 21 4.2.5.1 Insertion of marked bits in the sequence to be input in first interleaver22 4.2.5.2 1st
11、interleaver operation.23 4.2.5.3 Relation between input and output of 1stinterleaving in uplink23 4.2.5.4 Relation between input and output of 1stinterleaving in downlink.24 4.2.6 Radio frame segmentation 24 4.2.6.1 Relation between input and output of the radio frame segmentation block in uplink .2
12、4 4.2.6.2 Relation between input and output of the radio frame segmentation block in downlink 24 4.2.7 Rate matching .25 4.2.7.1 Determination of rate matching parameters in uplink.27 4.2.7.1.1 Determination of SF and number of PhCHs needed27 4.2.7.1.2 Determination of parameters needed for calculat
13、ing the rate matching pattern 28 4.2.7.1.3 Convolutionally encoded TrCHs .28 4.2.7.1.4 Turbo encoded TrCHs .29 4.2.7.2 Determination of rate matching parameters in downlink 30 4.2.7.2.1 Determination of rate matching parameters for fixed positions of TrCHs 31 4.2.7.2.2 Determination of rate matching
14、 parameters for flexible positions of TrCHs 34 4.2.7.3 Bit separation and collection in uplink36 4.2.7.3.1 Bit separation.38 4.2.7.3.2 Bit collection .39 4.2.7.4 Bit separation and collection in downlink.40 4.2.7.4.1 Bit separation.41 4.2.7.4.2 Bit collection .41 4.2.7.5 Rate matching pattern determ
15、ination 42 4.2.8 TrCH multiplexing43 4.2.9 Insertion of discontinuous transmission (DTX) indication bits 43 4.2.9.1 1stinsertion of DTX indication bits.43 ETSI ETSI TS 101 851-2 V1.2.1 (2006-01) 4 4.2.9.2 2ndinsertion of DTX indication bits 44 4.2.10 Physical channel segmentation .45 4.2.10.1 Relati
16、on between input and output of the physical segmentation block in uplink 46 4.2.10.2 Relation between input and output of the physical segmentation block in downlink .46 4.2.11 2ndinterleaving46 4.2.12 Physical channel mapping 47 4.2.12.1 Uplink .47 4.2.12.2 Downlink.47 4.2.13 Restrictions on differ
17、ent types of CCTrCHs.48 4.2.13.1 Uplink Dedicated channel (DCH) .48 4.2.13.2 Random Access CHannel (RACH) .48 4.2.13.3 Downlink Dedicated CHannel (DCH) 49 4.2.13.4 Broadcast channel (BCH) .49 4.2.13.5 Forward access and paging channels (FACH and PCH).49 4.2.14 Multiplexing of different transport cha
18、nnels into one CCTrCH, and mapping of one CCTrCH onto physical channels 49 4.2.14.1 Allowed CCTrCH combinations for one UE 50 4.2.14.1.1 Allowed CCTrCH combinations on the uplink .50 4.2.14.1.2 Allowed CCTrCH combinations on the downlink 50 4.3 Transport format detection .50 4.3.1 Blind transport fo
19、rmat detection .51 4.3.2 Single transport format detection51 4.3.3 Transport format detection based on TFCI.51 4.3.4 Coding of Transport-Format-Combination Indicator (TFCI) .52 4.3.5 Mapping of TFCI words .53 4.3.5.1 Mapping of TFCI word in normal mode .53 4.3.5.2 Mapping of TFCI word in compressed
20、mode .53 4.3.5.2.1 Uplink compressed mode 53 4.3.5.2.2 Downlink compressed mode .54 4.4 Compressed mode 54 4.4.1 Frame structure in the uplink 55 4.4.2 Frame structure types in the downlink55 4.4.3 Transmission time reduction method55 4.4.3.1 Compressed mode by puncturing55 4.4.3.2 Compressed mode b
21、y reducing the spreading factor by 2.55 4.4.3.3 Compressed mode by higher layer scheduling55 4.4.4 Transmission gap position 56 Annex A (informative): Blind transport format detection58 A.1 Blind transport format detection using fixed positions 58 A.1.1 Blind transport format detection using receive
22、d power ratio58 A.1.2 Blind transport format detection using CRC 58 Annex B (informative): Compressed mode idle lengths61 B.1 Idle lengths for DL, UL and DL+UL compressed mode61 Annex C (informative): Bibliography.63 History 64 ETSI ETSI TS 101 851-2 V1.2.1 (2006-01) 5 Intellectual Property Rights I
23、PRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or
24、potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carr
25、ied out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Technica
26、l Committee Satellite Earth Stations and Systems (SES). The present document is specifying the Satellite Radio Interface referenced as SRI Family G at ITU-R, in the frame of the modification of ITU-R Recommendation M.1457-5. This modification has been approved at SG8 meeting in November 2005. The co
27、ntents of the present document are subject to continuing work within TC-SES and may change following formal TC-SES approval. Should TC-SES modify the contents of the present document it will then be republished by ETSI with an identifying change of release date and an increase in version number as f
28、ollows: Version 1.m.n Where: the third digit (n) is incremented when editorial only changes have been incorporated in the specification; the second digit (m) is incremented for all other types of changes, i.e. technical enhancements, corrections, updates, etc. The present document is part 2 of a mul
29、ti-part deliverable covering Satellite Earth Stations and Systems (SES); Satellite Component of UMTS/IMT2000; G-family, as identified below: Part 1: “Physical channels and mapping of transport channels into physical channels (S-UMTS-A 25.211)“; Part 2: “Multiplexing and channel coding (S-UMTS-A 25.2
30、12)“; Part 3: “Spreading and modulation (S-UMTS-A 25.213)“; Part 4: “Physical layer procedures (S-UMTS-A 25.214)“; Part 5: “UE Radio Transmission and Reception“; Part 6: “Ground stations and space segment radio transmission and reception“. Introduction S-UMTS stands for the Satellite component of th
31、e Universal Mobile Telecommunication System. S-UMTS systems will complement the terrestrial UMTS (T-UMTS) and inter-work with other IMT-2000 family members through the UMTS core network. S-UMTS will be used to deliver 3rdgeneration Mobile Satellite Services (MSS) utilizing either low (LEO) or medium
32、 (MEO) earth orbiting, or geostationary (GEO) satellite(s). S-UMTS systems are based on terrestrial 3GPP specifications and will support access to GSM / UMTS core networks. NOTE 1: The term T-UMTS will be used in the present document to further differentiate the Terrestrial UMTS component. ETSI ETSI
33、 TS 101 851-2 V1.2.1 (2006-01) 6 Due to the differences between terrestrial and satellite channel characteristics, some modifications to the terrestrial UMTS (T-UMTS) standards are necessary. Some specifications are directly applicable, whereas others are applicable with modifications. Similarly, so
34、me T-UMTS specifications do not apply, whilst some S-UMTS specifications have no corresponding T-UMTS specification. Since S-UMTS is derived from T-UMTS, the organization of the S-UMTS specifications closely follows the original 3rdGeneration Partnership Project (3GPP) structure. The S-UMTS numbers
35、have been designed to correspond to the 3GPP terrestrial UMTS numbering system. All S-UMTS specifications are allocated a unique S-UMTS number as follows: S-UMTS-n xx.yyy Where: The numbers xx and yyy correspond to the 3GPP numbering scheme. n (n = A, B, C, etc.) denotes the family of S-UMTS specifi
36、cations. An S-UMTS system is defined by the combination of a family of S-UMTS specifications and 3GPP specifications, as follows: If an S-UMTS specification exists it takes precedence over the corresponding 3GPP specification (if any). This precedence rule applies to any references in the correspond
37、ing 3GPP specifications. NOTE 2: Any references to 3GPP specifications within the S-UMTS specifications are not subject to this precedence rule. EXAMPLE: An S-UMTS specification may contain specific references to the corresponding 3GPP specification. If an S-UMTS specification does not exist, the co
38、rresponding 3GPP specification may or may not apply. The exact applicability of the complete list of 3GPP specifications shall be defined at a later stage. ETSI ETSI TS 101 851-2 V1.2.1 (2006-01) 7 1 Scope The present document describes the characteristics of the Layer 1 multiplexing and channel cod
39、ing used for family G of the satellite component of UMTS (S-UMTS-G). It is based on the FDD mode of UTRA defined by TS 125 211 4, TS 125 212 5, TS 125 213 6 and TS 125 214 7 and adapted for operation over satellite transponders. 2 References The following documents contain provisions which, through
40、reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest ver
41、sion applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. 1 ETSI TS 101 851-1: “Satellite Earth Stations and Systems (SES); Satellite Component of UMTS/IMT2000; G-family; Part 1: Physical channels and m
42、apping of transport channels into physical channels (S-UMTS-A 25.211)“. 2 ETSI TS 101 851-3: “Satellite Earth Stations and Systems (SES); Satellite Component of UMTS/IMT2000; G-family; Part 3: Spreading and modulation (S-UMTS-A 25.213)“. 3 ETSI TS 101 851-4: “Satellite Earth Stations and Systems (SE
43、S); Satellite Component of UMTS/IMT2000; G-family; Part 4: Physical layer procedures (S-UMTS-A 25.214)“. 4 ETSI TS 125 211: “Universal Mobile Telecommunications System (UMTS); Physical channels and mapping of transport channels onto physical channels (FDD) (3GPP TS 25.211)“. 5 ETSI TS 125 212: “Univ
44、ersal Mobile Telecommunications System (UMTS); Multiplexing and channel coding (FDD) (3GPP TS 25.212)“. 6 ETSI TS 125 213: “Universal Mobile Telecommunications System (UMTS); Spreading and modulation (FDD) (3GPP TS 25.213)“. 7 ETSI TS 125 214: “Universal Mobile Telecommunications System (UMTS); Phys
45、ical layer procedures (FDD) (3GPP TS 25.214)“. 8 ETSI TS 125 302: “Universal Mobile Telecommunications System (UMTS); Services provided by the physical layer (3GPP TS 25.302)“. 9 ETSI TS 125 215: “Universal Mobile Telecommunications System (UMTS); Physical layer; Measurements (FDD) (3GPP TS 25.215)“
46、. ETSI ETSI TS 101 851-2 V1.2.1 (2006-01) 8 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: Transmission Gap (TG): is consecutive empty slots that have been obtained with a transmission time reduction metho
47、d. The transmission gap can be contained in one or two consecutive radio frames Transmission Gap Length (TGL): is the number of consecutive empty slots that have been obtained with a transmission time reduction method, 0 TGL 14 NOTE: The CFNs of the radio frames containing the first empty slot of th
48、e transmission gaps, the CFNs of the radio frames containing the last empty slot, the respective positions Nfirstand Nlastwithin these frames of the first and last empty slots of the transmission gaps, and the transmission gap lengths can be calculated with the compressed mode parameters described i
49、n TS 125 215 9. TrCH number: transport channel number identifies a TrCH in the context of L1 NOTE: The L3 transport channel identity (TrCH ID) maps onto the L1 transport channel number. The mapping between the transport channel number and the TrCH ID is as follows: TrCH 1 corresponds to the TrCH with the lowest TrCH ID, TrCH 2 corresponds to the TrCH with the next lowest TrCH ID and so on. 3.2 Symbols For the purposes of the present document, the following symbols apply: x round towards , i.e. integer such that x x Z. The code
