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YD/T 2741-2014Technical Specification for Uu-T Interface of LTE based Broadband Trunking Communication (B-Trunc) System (Phase 1) (English PDF)

基于LTE技术的宽带集群通信(B-TrunC)系统接口技术要求（第一阶段）空中接口

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Issued by

Ministry of Industry and Information Technology of the People's Republic of China

Level / Type

National · Recommended

Issue date

October 14, 2014

Implementation date

October 14, 2014

Scope

YD/T 2741-2014 is the English-translated version of 基于LTE技术的宽带集群通信(B-TrunC)系统接口技术要求（第一阶段）空中接口.

YD/T 2741-2014 is the Chinese standard "Technical Specification for Uu-T Interface of LTE based Broadband Trunking Communication (B-Trunc) System (Phase 1)". Its scope clause reads: The present document specifies the physical layer, layer 2, and layer 3 protocols for interface of LTE based broadband trunking communication (B-TrunC) system (Phase 1).

The present document applies to UEs and eNodeBs of LTE based broadband trunking communication (B-TrunC) system (Phase 1). Its clauses include abbreviated terms; physical layer. general description; physical channels and modulation; physical layer multiplexing and channel coding; physical layer procedures.

It was issued by the Ministry of Industry and Information Technology of the People's Republic of China on 2014-10-14 and took effect on 2014-10-14.

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Document preview — YD/T 2741-2014

National Standard of the People's Republic of China

ICS: 33.060
Classification: M 36

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Foreword...3
1 Scope...5
2 Normative references...5
3 Abbreviated terms...6
4 Physical layer. General description...7
5 Physical channels and modulation...8
6 Physical layer multiplexing and channel coding...8
6.1 Mapping of the transport channel to physical channel...8
6.2 Channel coding, multiplexing and interleaving...9
7 Physical layer procedures...9
7.1 UE procedure for receiving the physical downlink shared channel...9
7.2 CQI/PMI/RI reporting...11
7.3 ACK/NACK reporting...11
7.4 Physical uplink shared channel related procedures...11
7.5 Physical downlink control channel procedures...11
7.6 Physical uplink control channel procedures...13
8 Physical layer measurement...13
9 Lay 2.Medium Access Control (MAC) protocol...13
9.1 MAC Structure...13
9.2 Channel structure and channel mapping...13
9.3 MAC PDU design...15
9.4 RNTI values and usage...16
9.5 Downlink assignment reception of DL-SCH data transfer...17
9.6 TPCH reception...19
9.7 PDCCH search space control for trunking group call...19
9.8 Trunking Buffer Status Report (Optional)...21
10 Radio Link Control (RLC) protocol...23
11 Packet Data Convergence Protocol (PDCP)...24
12 RRC Protocol...24
12.1 Overview...24
12.2 System information...25
12.3 RRC process...26
12.4 Others...30
12.5 Protocol data unit, format, and parameter (Table and ASN.1)...32
12.6 Variable and constant...50
13 Trunking services of UEs in idle mode...52

1 Scope

The present document specifies the physical layer, layer 2, and layer 3 protocols for interface of LTE based broadband trunking communication (B-TrunC) system (Phase

1).

The present document applies to UEs and eNodeBs of LTE based broadband trunking communication (B-TrunC) system (Phase 1).

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

YD/T 2560.1-2013, TD-LTE digital cellular mobile telecommunication network technical requirement for Uu interface physical layer (Phase 1) Part 1.General

YD/T 2560.2-2013, TD-LTE digital cellular mobile telecommunication network technical requirement for Uu interface physical layer (Phase 1) Part 2.Physical channel and modulation

YD/T 2560.3-2013, TD-LTE digital cellular mobile telecommunication network technical requirement for Uu interface physical layer (Phase 1) Part 3.

Multiplexing and channel coding

YD/T 2560.4-2013, TD-LTE digital cellular mobile telecommunication network technical requirement for Uu interface physical layer (Phase 1) Part 4.Physical layer procedure

YD/T 2560.5-2013, TD-LTE digital cellular mobile telecommunication network technical requirement for Uu interface physical layer (Phase 1) Part 5.Physical layer measurement

YD/T 2561.1-2013, TD-LTE digital cellular mobile telecommunication network technical requirement for Uu interface layer two (Phase 1) Part 1.MAC protocol

YD/T 2561.2-2013, TD-LTE digital cellular mobile telecommunication network technical requirement for Uu interface layer two (Phase 1) Part 2.RLC protocol

YD/T 2561.3-2013, TD-LTE digital cellular mobile telecommunication network technical requirement for Uu interface layer two (Phase 1) Part 3.PDCP protocol

YD/T 2562.1-2013, TD-LTE digital cellular mobile telecommunication network technical requirement for Uu interface layer three (Phase 1) Part 1.RRC protocol

YD/T 2562.2-2013, TD-LTE digital cellular mobile telecommunication network technical requirement for Uu interface layer three (Phase 1) Part 2.UE procedures in idle mode

3 Abbreviated terms

For the purposes of this document, the following abbreviated terms apply.

BSR Buffer Status Report

CQI Channel Quality Indication

CRC Cyclic Redundancy Check

DL-SCH Downlink Shared Channel eNode B Evolved NodeB

E-UTRAN Evolved UTRAN

G-RNTI Group-Radio Network Temporary Identifier

HARQ Hybrid Automatic Repeat Request

LCID Logical Channel ID

LTE Long Time Evolution

MAC Medium Access Control

NAS Non-Access Stratum

PBCH Physical Broadcast Channel

PCH Paging Channel

PCFICH Physical Control Format Indicator Channel

PDCCH Physical Downlink Control Channel

PDCP Packet Data Convergence Protocol

PDSCH Physical Downlink Shared Channel

PHICH Physical Hybrid ARQ Indicator Channel

PMCH Physical Multicast Channel

PMI Precoding Matrix Indicator

PRACH Physical Random Access Channel

PUCCH Physical Uplink Control Channel

PUSCH Physical Uplink Shared Channel

RI Rank Indication

RLC Radio Link Control

RNTI Radio Network Temporary Identifier

RRC Radio Resource Control

TCCH Trunking Control Channel

TDD Time Division Duplex

TDRB Trunking Data Radio Bearer

TGID Trunking Group Identification

TPCCH Trunking Paging Control Channel

TPCH Trunking Paging Channel

TP-RNTI Trunking Paging-Radio Network Temporary Identifier

TSRB Trunking Signalling Radio Bearer

TTCH Trunking Traffic Channel

4 Physical layer. General description

The physical layer process for point-to-point services (e.g. individual calls) of broadband trunking communication (B-TrunC) system is specified in YD/T 2560.1-

2013.

Only the physical layer process for point-to-multipoint services is defined in the present document.

When the trunking function is supported, the definition of physical channels, modulation and channel coding scheme are specified in YD/T 2560.1-2013.

The following downlink physical channels of B-TrunC are defined.

-- Physical Downlink Shared Channel, PDSCH;

-- Physical Downlink Control Channel, PDCCH;

-- Physical Broadcast Channel, PBCH;

-- Physical Control Format Indicator Channel, PCFICH;

-- Physical Hybrid ARQ Indicator Channel, PHICH.

The following uplink physical channels of B-TrunC are defined.

-- Physical Random Access Channel, PRACH;

-- Physical Uplink Shared Channel, PUSCH;

-- Physical Uplink Control Channel, PUCCH.

The system shall support intra-system measurement while inter-system measurement is not considered.

5 Physical channels and modulation

Requirements for physical channels and modulation are specified in YD/T 2560.2-2013.

6 Physical layer multiplexing and channel coding

6.1 Mapping of the transport channel to physical channel

For uplink transmission, the mapping of uplink transport channels and uplink channel control information to their corresponding physical channels is specified in YD/T

2560.3-2013.

For downlink transmission, trunking paging channel (TPCH), a new downlink transport channel is defined to carry pagings related to the trunking calls including group calls and individual calls. TPCH maps to downlink shared channel (PDSCH). The mapping of other downlink transport channels and downlink channel control information to their corresponding physical channels is specified in YD/T 2560.3-2013.

Table 1 specifies the mapping of the downlink transport channels to their corresponding physical channels.

6.2 Channel coding, multiplexing and interleaving

Besides the requirements specified in YD/T 2560.3-2013, the following channel coding, multiplexing and interleaving shall also apply.

-- The same coding scheme and coding rate for the PCH applies to the TPCH.

-- The same transport channel processing for the PCH applies to the TPCH.

-- Downlink control information (DCI) format 1A/1C is enhanced to support with CRC scrambled by the new defined TP-RNTI.

-- Upon receiving the DCI format 1A/1C with CRC scrambled by TP-RNTI, a

UE shall perform all the fields in the DCI format 1A/1C the same as P-RNTI.

7 Physical layer procedures

7.1 UE procedure for receiving the physical downlink shared channel

If a UE is configured by higher layers to decode PDCCH with CRC scrambled by the

TP-RNTI (Trunking Paging RNTI), the UE shall decode the PDCCH and the corresponding PDSCH according to any of the combinations defined in Table 2.The scrambling initialization of PDSCH corresponding to these PDCCHs is by TP-RNTI.

If a UE is in RRC_IDLE state and configured by higher layers to decode PDCCH with

CRC scrambled by the G-RNTI (Group RNTI), the UE shall decode the PDCCH and the corresponding PDSCH according to any of the combinations defined in Table 3.

The scrambling initialization of PDSCH corresponding to these PDCCHs is by G-RNTI.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 52 pages — is available in the English PDF.

Referenced standards

Normative references

YD/T 2560.1-2013 · YD/T 2560.2-2013 · YD/T 2560.3-2013 · YD/T 2560.4-2013 · YD/T 2560.5-2013 · YD/T 2561.1-2013 · YD/T 2561.2-2013 · YD/T 2561.3-2013 · YD/T 2562.1-2013 · YD/T 2562.2-2013

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