ETSI TS 101 376-4-15 V3.4.1 (2017-03)

GEO-Mobile Radio Interface Specifications (Release 3); Third Generation Satellite Packet Radio Service; Part 4: Radio interface protocol specifications; Sub-part 15: Packet Data Convergence Protocol (PDCP) specification; GMR-1 3G 25.323

RTS/SES-00423

General Information

• Status: Published
• Publication Date: 09-Mar-2017
• Technical Committee: SES SCN - Satellite Communications and Navigation
• Current Stage: 12 - Completion
• Due Date: 24-Feb-2017
• Completion Date: 10-Mar-2017

Standards Content (Sample)

TECHNICAL SPECIFICATION
GEO-Mobile Radio Interface Specifications (Release 3);
Third Generation Satellite Packet Radio Service;
Part 4: Radio interface protocol specifications;
Sub-part 15: Packet Data Convergence Protocol (PDCP)
specification;
GMR-1 3G 25.323
GMR-1 3G 25.323 2 ETSI TS 101 376-4-15 V3.4.1 (2017-03)

Reference
RTS/SES-00423
Keywords
3G, earth station, GMPRS, GMR, GPRS, GSM,
GSO, interface, MES, mobile, MSS, MUX, radio,
satellite, S-PCN, TDMA
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ETSI
GMR-1 3G 25.323 3 ETSI TS 101 376-4-15 V3.4.1 (2017-03)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 8
Introduction . 9
1 Scope . 11
2 References . 11
2.1 Normative references . 11
2.2 Informative references . 12
3 Definitions and abbreviations . 12
3.1 Definitions . 12
3.2 Abbreviations . 13
4 General . 13
4.1 Objective . 13
4.2 Overview on Sublayer Architecture . 13
5 Functions . 14
5.0 General . 14
5.1 Header Compression . 15
5.1.0 General . 15
5.1.1 Mapping of PID Values . 15
5.1.2 IP Header Compression (IETF RFC 2507) . 16
5.1.2.0 General . 16
5.1.2.1 Context Identifiers . 16
5.1.2.2 Mapping of PID Values for IETF RFC 2507 . 16
5.1.2.3 Management of Full Header Transmission . 17
5.1.3 Robust Header Compression (IETF RFC 3095) . 17
5.1.3.0 General . 17
5.1.3.1 Context Identifiers . 17
5.1.3.2 Void. 17
5.1.3.3 Mapping of PID Values for IETF RFC 3095 . 17
5.1.3.4 Void. 17
5.1.3.5 Protocol Parameters . 17
5.1.3.6 Configuration by RRC . 18
5.1.4 GMR-1 3G LLA Header Suppression for Spectrally Efficient VoIP . 18
5.1.5 Data Compression . 18
5.2 PDCP Setup . 19
5.2.1 PDCP Protocol Information from RNC to MES . 19
5.2.2 PDCP Capability Information from MES to RNC . 19
5.2.3 PDCP Entity Creation/Deletion . 20
5.3 Data Transfer . 21
5.3.0 General . 21
5.3.1 Data transfer over Acknowledged Mode RLC . 21
5.3.2 Data transfer over Unacknowledged and Transparent Mode RLC . 22
5.3.3 RoHC Data Flow . 23
5.3.4 Compression/Decompression Flow in GMR-1 3G LLA Profile. 24
5.4 SRNS Relocation . 24
5.4.0 General . 24
5.4.1 Lossless SRNS Relocation . 24
5.4.2 Context Relocation for GMR-1 3G LLA Header Suppressed Session . 24
5.4.3 Context Relocation for All other Session Type . 25
5.5 Lossless DL RLC PDU Size Change . 25
5.6 General Procedures. 25
5.6.1 PDCP Sequence Numbering . 25
5.6.2 PDCP Sequence Number Synchronization . 25
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5.6.3 Sequence Number and Data Forwarding . 26
5.7 Header Compression and Decompression for MBMS . 26
5.7.0 General . 26
5.7.1 Cell Change Inside the Same Cell Group . 26
5.7.2 Cell change between cell groups . 26
6 Services . 26
6.1 Services Provided to Upper Layers . 26
6.2 Services Expected from RLC Layer . 26
7 Elements for Layer-to-Layer Communication . 26
7.0 General . 26
7.1 Control Plane . 26
7.1.1 Primitives between PDCP and Upper Layers . 26
7.2 User Plane . 28
7.2.1 Primitives Between PDPC and Upper Layer . 28
7.2.2 Primitives Between PDPC and RLC . 28
8 Elements for Peer-to-Peer Communication . 29
8.1 Protocol Data Units . 29
8.2 Formats . 30
8.2.0 General . 30
8.2.1 PDCP-No-Header PDU . 30
8.2.2 PDCP Data PDU . 30
8.2.3 PDCP SeqNum PDU . 30
8.3 Parameters . 31
8.3.0 General . 31
8.3.1 PDU Type . 31
8.3.2 PID . 31
8.3.3 Data . 32
8.3.4 Sequence number . 32
9 Handling of Unknown, Unforeseen, and Erroneous Protocol Data . 32
9.1 Invalid PDU Type . 32
9.2 Invalid PID value. 32
Annex A (normative): GMR-1 3G LLA Header Suppression. 33
A.1 Introduction . 33
A.1.0 General . 33
A.1.1 GMR-1 3G LLA Header SuppressionService Options. 33
A.2 Silence Suppression . 33
A.3 GMR-1 3G LLA Header Suppression Overview . 34
A.3.0 General . 34
A.3.1 Context and Functional Blocks . 34
A.3.2 HCU Application Overview . 35
A.3.3 HCL Application Overview . 36
A.4 GMR-1 3G LLA Header Suppression End-to-End Flow . 36
A.4.1 GMR-1 3G LLA Header Suppression Flow for Downlink . 36
A.4.1.0 General . 36
A.4.1.1 Transmitting Side . 36
A.4.1.2 Receiving Side . 38
A.4.2 GMR-1 3G LLA Header Suppression Flow for Uplink . 39
A.4.2.1 Transmitting Side . 39
A.4.2.2 Receiving Side . 39
A.4.2.3 PDCP Context Creation . 40
Annex B (normative): ROHC Performance Testing . 41
B.1 Introduction . 41
B.1.0 General . 41
B.1.1 Purpose of the Performance Testing . 41
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GMR-1 3G 25.323 5 ETSI TS 101 376-4-15 V3.4.1 (2017-03)
B.1.2 Input Sequence for Uncompressed Headers . 42
B.1.3 Feedback Format for the Test Cases. 42
B.1.4 Feedback Generation for Test Cases (R-Mode Only) . 42
B.1.5 Calculation of Compressed Header Size . 43
B.2 Test Outline - RoHC RTP Profile 0x0001 . 43
B.2.1 Test 1a - Base Test of ROHC RTP O-Mode Compressor . 43
B.2.1.1 Test Purpose. 43
B.2.1.2 Sequence Details . 44
B.2.1.3 Test Requirement . 44
B.2.2 Test 1b - Base Test of ROHC RTP R-Mode Compressor . 45
B.2.2.1 Test Purpose. 45
B.2.2.2 Sequence Details . 45
B.2.2.3 Test Requirement . 46
B.2.3 Void . 46
B.2.4 Void . 46
B.2.5 Test 3a - Re-Establishment of TS Function after DTX in O-Mode . 46
B.2.5.1 Test Purpose. 46
B.2.5.2 Sequence Details . 47
B.2.5.3 Test Requirement . 47
B.2.6 Test 3b - Re-Establishment of TS Function after DTX in R-Mode . 47
B.2.6.1 Test Purpose. 47
B.2.6.2 Sequence Details . 48
B.2.6.3 Test Requirement . 48
B.2.7 Test 4a - Compressor Response to Single Lost Packets in O-Mode . 48
B.2.7.1 Test Purpose. 48
B.2.7.2 Sequence Details . 49
B.2.7.3 Test Requirement . 49
B.2.8 Test 4b - Compressor Response to Single Lost Packets in R-Mode . 49
B.2.8.1 Test Purpose. 49
B.2.8.2 Sequence Details . 49
B.2.8.3 Test Requirement . 49
B.2.9 Void . 49
B.2.10 Void . 49
B.2.11 Test 6a - TS Function During DTX with Varying Delta in O-Mode . 49
B.2.11.1 Test Purpose. 49
B.2.11.2 Sequence Details . 49
B.2.11.3 Test Requirement . 50
B.2.12 Test 6b - TS Function During DTX with Varying Delta in R-Mode . 50
B.2.12.1 Test Purpose. 50
B.2.12.2 Sequence Details . 50
B.2.12.3 Test Requirement . 51
B.2.13 Test 7a - SRNS Relocation in O-Mode . 51
B.2.13.0 General . 51
B.2.13.1 Test Purpose. 51
B.2.13.2 Sequence Details . 51
B.2.13.3 Test Requirement . 51
B.3 Test Packet Structures . 52
Annex C (informative): Reference Model for Generating ROHC Performance Requirements . 55
C.1 Introduction . 55
C.2 For Voice-over-IP (VoIP) Optimization . 55
C.2.1 ROHC Parameters Optimizations for VoIP . 55
C.2.2 Parameter Setting for ROHC Reference Model for VoIP . 55
C.2.3 Setting the Parameter Value N in Test Cases for VoIP . 56
Annex D (normative): Data Compression . 57
D.1 Overview . 57
D.2 Control Function . 57
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D.3 Data Compression Function . 57
D.3.0 General . 57
D.3.1 Encoding. 57
D.3.2 Decoding . 57
D.4 Packet Technique and Multi-Packet Technique . 58
D.5 Transfer . 58
D.6 Communication between Control Function and Data Compression Function . 58
D.7 Communication between Peer Data Compression Function . 58
D.8 Configuration Parameters . 58
Annex E (informative): Bibliography . 60
History . 61

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GMR-1 3G 25.323 7 ETSI TS 101 376-4-15 V3.4.1 (2017-03)
Intellectual Property Rights
IPRs 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 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 (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried 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 Technical Committee Satellite Earth Stations and
Systems (SES).
The contents 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 follows:
Version 3.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 5, sub-part 1 of a multi-part deliverable covering the GEO-Mobile Radio Interface
Specifications (Release 3); Third Generation Satellite Packet Radio Service, as identified below:
Part 1: "General specifications":
Part 2: "Service specifications";
Part 3: "Network specifications";
Part 4: "Radio interface protocol specifications":
Sub-part 1: "Mobile Earth Station-Gateway Station System (MES-GSS) Interface; GMR-1 04.001";
Sub-part 2: "GMR-1 Satellite Network Access Reference Configuration; GMR-1 04.002";
Sub-part 3: "Channel Structures and Access Capabilities; GMR-1 04.003";
Sub-part 4: "Layer 1 General Requirements; GMR-1 3G 44.004";
Sub-part 5: "Data Link Layer General Aspects; GMR-1 04.005";
Sub-part 6: "Mobile earth Station-Gateway Station Interface Data Link Layer Specifications;
GMR-1 04.006";
Sub-part 7: "Mobile Radio Interface Signalling Layer 3 General Aspects; GMR-1 3G 04.007";
Sub-part 8: "Mobile Radio Interface Layer 3 Specifications; GMR-1 3G 44.008";
Sub-part 9: "Performance Requirements on the Mobile Radio Interface; GMR-1 04.013";
Sub-part 10: "Rate Adaptation on the Access Terminal-Gateway Station Subsystem (MES-GSS) Interface;
GMR-1 04.021";
Sub-part 11: "Radio Link Protocol (RLP) for Data Services; GMR-1 04.022";
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GMR-1 3G 25.323 8 ETSI TS 101 376-4-15 V3.4.1 (2017-03)
Sub-part 12: "Mobile Earth Station (MES) - Base Station System (BSS) interface; Radio Link
Control/Medium Access Control (RLC/MAC) protocol; GMR-1 3G 44.060";
Sub-part 13: "Radio Resource Control (RRC) protocol; Iu Mode; GMR-1 3G 44.118";
Sub-part 14: "Mobile Earth Station (MES) - Base Station System (BSS) interface; Radio Link
Control/Medium Access Control (RLC/MAC) protocol; Iu Mode; GMR-1 3G 44.160";
Sub-part 15: "Packet Data Convergence Protocol (PDCP) specification; GMR-1 3G 25.323";
Part 5: "Radio interface physical layer specifications";
Part 6: "Speech coding specifications";
Part 7: "Terminal adaptor specifications".
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
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GMR-1 3G 25.323 9 ETSI TS 101 376-4-15 V3.4.1 (2017-03)
Introduction
GMR stands for GEO (Geostationary Earth Orbit) Mobile Radio interface, which is used for Mobile Satellite
Services (MSS) utilizing geostationary satellite(s). GMR is derived from the terrestrial digital cellular standard GSM
and supports access to GSM core networks.
The present document is part of the GMR Release 3 specifications. Release 3 specifications are identified in the title
and can also be identified by the version number:
• Release 1 specifications have a GMR 1 prefix in the title and a version number starting with "1" (V1.x.x).
• Release 2 specifications have a GMPRS 1 prefix in the title and a version number starting with "2" (V2.x.x).
• Release 3 specifications have a GMR-1 3G prefix in the title and a version number starting with "3" (V3.x.x).
The GMR release 1 specifications introduce the GEO-Mobile Radio interface specifications for circuit mode Mobile
Satellite Services (MSS) utilizing geostationary satellite(s). GMR release 1 is derived from the terrestrial digital cellular
standard GSM (phase 2) and it supports access to GSM core networks.
The GMR release 2 specifications add packet mode services to GMR release 1. The GMR release 2 specifications
introduce the GEO-Mobile Packet Radio Service (GMPRS). GMPRS is derived from the terrestrial digital cellular
standard GPRS (included in GSM Phase 2+) and it supports access to GSM/GPRS core networks.
The GMR release 3 specifications evolve packet mode services of GMR release 2 to 3rd generation UMTS compatible
services. The GMR release 3 specifications introduce the GEO-Mobile Radio Third Generation (GMR-1 3G) service.
Where applicable, GMR-1 3G is derived from the terrestrial digital cellular standard 3GPP and it supports access to
3GPP core networks.
Due to the differences between terrestrial and satellite channels, some modifications to the GSM or 3GPP standard are
necessary. Some GSM and 3GPP specifications are directly applicable, whereas others are applicable with
modifications. Similarly, some GSM and 3GPP specifications do not apply, while some GMR specifications have no
corresponding GSM or 3GPP specification.
Since GMR is derived from GSM and 3GPP, the organization of the GMR specifications closely follows that of GSM
or 3GPP as appropriate. The GMR numbers have been designed to correspond to the GSM and 3GPP numbering
system. All GMR specifications are allocated a unique GMR number. This GMR number has a different prefix for
Release 2 and Release 3 specifications as follows:
• Release 1: GMR-n xx.zyy
• Release 2: GMPRS-n xx.zyy
• Release 3: GMR-1 3G xx.zyy
where:
- xx.0yy (z = 0) is used for GMR specifications that have a corresponding GSM or 3GPP specification. In
this case, the numbers xx and yy correspond to the GSM or 3GPP numbering scheme.
- xx.2yy (z = 2) is used for GMR specifications that do not correspond to a GSM or 3GPP specification. In
this case, only the number xx corresponds to the GSM or 3GPP numbering scheme and the number yy is
allocated by GMR.
- n denotes the first (n = 1) or second (n = 2) family of GMR specifications.
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GMR-1 3G 25.323 10 ETSI TS 101 376-4-15 V3.4.1 (2017-03)
A GMR system is defined by the combination of a family of GMR specifications and GSM and 3GPP specifications as
follows:
• If a GMR specification exists it takes precedence over the corresponding GSM or 3GPP specification (if any).
This precedence rule applies to any references in the corresponding GSM or 3GPP specifications.
NOTE: Any references to GSM or 3GPP specifications within the GMR specifications are not subject to this
precedence rule. For example, a GMR specification may contain specific references to the corresponding
GSM or 3GPP specification.
• If a GMR specification does not exist, the corresponding GSM or 3GPP specification may or may not apply.
The applicability of the GSM and 3GPP specifications are defined in ETSI TS 101 376-1-2 [7].
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GMR-1 3G 25.323 11 ETSI TS 101 376-4-15 V3.4.1 (2017-03)
1 Scope
The present document provides the description of the GMR-1 3G Packet Data Convergence Protocol (PDCP).
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers
to the latest release and the latest version of that document up to and including Release 7.
In the case of a reference to a GMR-1 3G document, a non-specific reference implicitly refers to the latest version of
that document in the same Release as the present document.
[1] ETSI TS 123 060: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); General Packet Radio Service (GPRS); Service
description; Stage 2 (3GPP TS 23.060 Release 7)".
[2] ETSI TS 125 331 (Release 7): "Universal Mobile Telecommunications System (UMTS); Radio
Resource Control (RRC); Protocol specification (3GPP TS 25.331 Release 7)".
[3] ETSI TS 125 322 (Release 7): "Universal Mobile Telecommunications System (UMTS); Radio
Link Control (RLC) protocol specification (3GPP TS 25.322 Release 7)".
[4] IETF RFC 2507: "IP Header Compression".
[5] IETF RFC 3095: "RObust Header Compression (ROHC): Framework and four profiles: RTP,
UDP, ESP, and uncompressed".
[6] ETSI TS 101 376-1-1: "GEO-Mobile Radio Interface Specifications (Release 2) General Packet
Radio Service; Part 1: General specifications; Sub-part 1: Abbreviations and acronyms;
GMPRS-1 01.004".
NOTE: This is a reference to a GMR-1 Release 2 Specification. See the introduction for more details.
[7] ETSI TS 101 376-1-2: "GEO-Mobile Radio Interface Specifications (Release 3); Third Generation
Satellite Packet Radio Service; Part 1: General specifications; Sub-part 2: Introduction to the
GMR-1 family; GMR-1 3G 41.201".
[8] Recommendation ITU-T V.44 (11-2000): "Data compression procedures".
[9] IETF RFC 768 (August 1980): "User Datagram Protocol".
[10] IETF RFC 791 (September 1981): "Internet Protocol".
[11] IETF RFC 3261 (June 2002): "SIP: Session Initiation Protocol".
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2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[i.1] ETSI TS 125 401: "Universal Mobile Telecommunications System (UMTS); UTRAN overall
description (3GPP TS 25.401 Release 7)".
[i.2] IETF RFC 3550: "RTP: A Transport Protocol for Real-Time Applications".
[i.3] ETSI TR 121 905: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); Vocabulary for 3GPP Specifications (3GPP TR 21.905)".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in ETSI TR 121 905 [i.3], ETSI
TS 101 376-1-2 [7] and the following apply:
N-context Refers collectively to both N-context-C and N-context-D
N-context* Refers collectively to both N-context-C* and N-context-D*
N-context-C The compression context for downlink in RNC at any given point of time
N-context-C* The frozen snapshot of the compression context for downlink taken by RNC
N-context-C-static*
The frozen snapshot of the static part of the compression context for downlink taken by RNC
N-context-D The decompression context for uplink in RNC at any given point of time
N-context-D* The frozen snapshot of the decompression context for uplink taken by RNC
N-context-D-static*
The frozen snapshot of the static part of the decompression context for uplink taken by RNC
M-context Refers collectively to both M-context-C and M-context-D
M-context* Refers collectively to both M-context-C* and M-context-D*
M-context-C The compression context for uplink in MES at any given point of time
M-context-C* The frozen snapshot of the compression context for uplink taken by MES
M-context-C-static*
The frozen snapshot of the static part of the compression context for uplink taken by MES
M-context-D The decompression context for downlink in MES at any given point of time
M-context-D* The frozen snapshot of the decompression context for downlink taken by MES
M-context-D-static*
The frozen snapshot of the static part of the decompression context for downlink taken by
MES
M-HC Entity located in the mobile terminal that performs header compression for uplink (i.e. MES
PDCP)
M-HCD Refers collectively to both M-HC and M-HD
M-HD Entity located in the mobile terminal that performs header decompression for downlink
(i.e. MES PDCP)
N-HC Entity located in the network that performs header compression for downlink (i.e. RNC
PDCP)
N-HCD Refers collectively to N-HC and N-HD
N-HD Entity located in the network tha
...