ETSI TS 125 321 V15.0.0 (2018-07)

Universal Mobile Telecommunications System (UMTS); Medium Access Control (MAC) protocol specification (3GPP TS 25.321 version 15.0.0 Release 15)

RTS/TSGR-0625321vf00

General Information

• Status: Published
• Publication Date: 10-Jul-2018
• Technical Committee: 3GPP RAN 6 - Legacy RAN radio and protocol
• Current Stage: 12 - Completion
• Completion Date: 11-Jul-2018

Standards Content (Sample)

ETSI TS 125 321 V15.0.0 (2018-07)






TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
Medium Access Control (MAC) protocol specification
(3GPP TS 25.321 version 15.0.0 Release 15)

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3GPP TS 25.321 version 15.0.0 Release 15 1 ETSI TS 125 321 V15.0.0 (2018-07)



Reference
RTS/TSGR-0625321vf00
Keywords
UMTS
ETSI
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3GPP TS 25.321 version 15.0.0 Release 15 2 ETSI TS 125 321 V15.0.0 (2018-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables 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
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Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
http://webapp.etsi.org/key/queryform.asp.
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.
ETSI

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3GPP TS 25.321 version 15.0.0 Release 15 3 ETSI TS 125 321 V15.0.0 (2018-07)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 8
1 Scope . 9
2 References . 9
3 Definitions and abbreviations . 10
3.1 Definitions . 10
3.1.1 HS-DSCH Specific Definitions . 10
3.1.2 E-DCH Specific Definitions . 10
3.1.2.1 General . 10
3.1.2.2 FDD. 11
3.1.3 DTX-DRX and HS-SCCH less Specific definitions (FDD only) . 12
3.1.4 HS-DSCH/E-DCH SPS Specific definitions (1.28 Mcps TDD only) . 12
3.1.5 Dual Cell E-DCH Specific definitions (FDD only) . 13
3.2 Abbreviations . 13
4 General . 14
4.1 Objective . 14
4.2 MAC architecture . 14
4.2.1 MAC Entities . 15
4.2.2 MAC-b . 15
4.2.3 Traffic Related Architecture - UE Side . 16
4.2.3.1 MAC-c/sh/m entity – UE Side . 17
4.2.3.2 MAC-d entity – UE Side . 19
4.2.3.3 MAC-hs entity – UE Side . 20
4.2.3.4 MAC-e/es entity – UE Side . 22
4.2.3.5 MAC-ehs entity – UE Side . 23
4.2.3.6 MAC-i/is entity – UE Side . 26
4.2.4 Traffic Related Architecture - UTRAN Side . 29
4.2.4.1 MAC-c/sh/m entity – UTRAN Side . 30
4.2.4.2 MAC-d entity – UTRAN Side . 31
4.2.4.3 MAC-hs entity – UTRAN Side . 33
4.2.4.4 MAC-es entity – UTRAN Side . 35
4.2.4.5 MAC-e entity – UTRAN Side . 36
4.2.4.6 MAC-ehs entity UTRAN Side . 37
4.2.4.7 MAC-is entity – UTRAN Side . 40
4.2.4.8 MAC-i entity – UTRAN Side . 44
4.3 Channel structure . 46
4.3.1 Transport channels . 47
4.3.2 Logical Channels . 47
4.3.2.1 Logical channel structure . 47
4.3.2.2 Control Channels . 48
4.3.2.3 Traffic Channels . 48
5 Services provided to upper layers . 48
5.1 Description of Services provided to upper layers . 48
6 Functions . 48
6.1 Description of the MAC functions . 48
6.2 Relation between MAC Functions and Transport Channels . 50
6.2.1 Relation between MAC Functions and Transport Channels in UTRAN . 50
6.2.2 Relation of MAC Functions and Transport Channels in UE . 51
7 Services expected from physical layer . 51
8 Elements for layer-to-layer communication . 51
ETSI

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3GPP TS 25.321 version 15.0.0 Release 15 4 ETSI TS 125 321 V15.0.0 (2018-07)
8.1 Primitives between layers 1 and 2 . 52
8.1.1 Primitives . 52
8.1.2 Parameters. 52
8.2 Primitives between MAC and RLC . 52
8.2.1 Primitives . 52
8.2.2 Parameters. 53
8.3 Primitives between MAC and RRC . 54
8.3.1 Primitives . 54
8.3.2 Parameters. 55
9 Elements for peer-to-peer communication . 58
9.1 Protocol data units . 58
9.1.1 General . 58
9.1.2 MAC PDU (not HS-DSCH or E-DCH) . 58
9.1.3 MAC-d PDU (HS-DSCH) . 58
9.1.4 MAC PDU (HS-DSCH) . 59
9.1.5 MAC PDU (E-DCH) . 61
9.2 Formats and parameters . 64
9.2.1 MAC PDU: Parameters of the MAC PDU header (not HS-DSCH or E-DCH) and MAC-d PDU
header (HS-DSCH and E-DCH) . 64
9.2.1.1 MAC header for DTCH and DCCH (not mapped on HS-DSCH or E-DCH) . 67
9.2.1.1a MAC-d Header for DTCH and DCCH (mapped on HS-DSCH) . 67
9.2.1.1b MAC-d Header for DTCH and DCCH (mapped on E-DCH) . 68
9.2.1.1c MAC-d or MAC-c headers for DTCH and DCCH (mapped on HS-DSCH, FDD and 1.28 Mcps
TDD only) . 68
9.2.1.2 MAC header for BCCH . 68
9.2.1.3 MAC header for PCCH . 69
9.2.1.4 MAC header for CCCH . 69
9.2.1.5 MAC Header for CTCH . 69
9.2.1.6 MAC Header for SHCCH . 69
9.2.2 MAC PDU: Parameters of the MAC header (HS-DSCH) . 71
9.2.2.1 MAC header for DTCH and DCCH . 72
9.2.3 Signalling of Transport Block size for HS-DSCH . 73
9.2.3.1 Transport block size for FDD. 73
9.2.3.2 Transport block size for 3.84 Mcps TDD . 75
9.2.3.2a Transport block size for 7.68 Mcps TDD . 78
9.2.3.3 Transport block size for 1.28 Mcps TDD . 81
9.2.4 MAC PDU: Parameters of the MAC header (E-DCH) . 90
9.2.4.1 MAC-es header parameters . 90
9.2.4.2 MAC-e header parameters . 90
9.2.4.3 MAC-is header parameters. 91
9.2.4.4 MAC-i header parameters . 91
9.2.5 Signaling of control information for FDD E-DCH . 92
9.2.5.1 HARQ information. 92
9.2.5.2 DL Scheduling information . 92
9.2.5.2.1 Relative Grants . 92
9.2.5.2.2 Absolute Grant . 95
9.2.5.2.2a UL MIMO rank and offset. 96
9.2.5.3 UL Scheduling information . 96
9.2.5.3.1 Happy Bit . 96
9.2.5.3.2 Scheduling Information . 96
9.2.5.3a UL MAC Control information . 98
9.2.5.3a.1.1 Filtered UPH Report . 99
9.2.5.3a.1.2 Ready to Switch . 99
9.2.5.4 Transport block size . 100
9.2.6 Signaling of control information for TDD E-DCH . 101
9.2.6.1 HARQ information. 101
9.2.6.2 DL Scheduling information . 101
9.2.6.2.1 Absolute Grant . 102
9.2.6.3 UL Scheduling Information . 103
9.2.6.4 Transport block size . 104
9.2.6.4.1 3.84 Mcps TDD Transport Block Size . 105
ETSI

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3GPP TS 25.321 version 15.0.0 Release 15 5 ETSI TS 125 321 V15.0.0 (2018-07)
9.2.6.4.2 7.68 Mcps TDD Transport Block Size . 105
9.2.6.4.3 1.28 Mcps TDD Transport Block Size . 106
9.2.6.5 Timing Advance and Synchronisation (3.84/7.68 Mcps TDD only) . 106
9.2.6.5.1 Unsynchronised Handover . 106
9.2.6.5.2 Synchronisation . 106
9.2.6.5.3 Timing Advance Request . 106
9.2.6.5.4 Timing Advance Response . 106
10 Handling of unknown, unforeseen and erroneous protocol data . 107
11 Specific functions . 108
11.1 Traffic volume measurement for dynamic radio bearer control . 108
11.2 Control of RACH transmissions and Enhanced Uplink in CELL_FACH state and Idle mode
transmissions . 108
11.2.1 Access Service Class selection . 108
11.2.2 Control of RACH transmissions for FDD mode . 109
11.2.2A Control of Enhanced Uplink in CELL_FACH state and Idle mode for FDD mode . 112
11.2.3 Control of RACH transmissions for TDD . 118
11.2.3.1 Control of RACH transmissions for 3.84 Mcps TDD and 7.68 Mcps TDD . 118
11.2.3.1.1 Control of E-RUCCH transmissions . 120
11.2.3.2 Control of RACH Transmissions for 1.28 Mcps TDD . 121
11.2.3.2.1 Control of E-RUCCH transmissions . 122
11.2.3.2.1.1 Access Service Class selection . 123
11.2.3.2.1.2 Void . 123
11.3 Void . 123
11.4 Transport format combination selection in UE (non E-DCH) . 123
11.4.1 Transport Format Combination Transmission Mode Switching . 125
11.5 Ciphering . 125
11.6 Control of HS-DSCH transmission and reception . 126
11.6.1 Network operation . 126
11.6.1.1 Scheduler . 126
11.6.1.2 HARQ entity . 127
11.6.1.3 HARQ process . 127
11.6.2 UE operation . 128
11.6.2.1 HARQ Entity. 128
11.6.2.2 HARQ process . 128
11.6.2.3 Reordering entity . 129
11.6.2.3.1 Definitions . 129
11.6.2.3.2 Reordering functionality . 130
11.6.2.4 Disassembly entity . 131
11.6.2.5 MAC-hs Reset . 131
11.6.2.6 Reconfiguration of MAC-hs parameters . 132
11.6.2.7 HARQ procedure for HS-SCCH less operation (FDD only) . 132
11.6.2.8 HARQ procedure for HS-DSCH SPS operation (1.28 Mcps TDD only) . 133
11.6.3 Network operation . 134
11.6.3.1 Scheduler . 134
11.6.3.2 HARQ entity . 136
11.6.3.3 HARQ process . 136
11.6.4 UE operation . 137
11.6.4.1 HARQ Entity. 137
11.6.4.2 HARQ process . 137
11.6.4.3 Disassembly entity . 139
11.6.4.4 Reordering queue distributio
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