ETSI TS 103 636-4 V1.1.1 (2020-07)

ETSI TS 103 636-4 V1.1.1 (2020-07)
TECHNICAL SPECIFICATION
DECT-2020 New Radio (NR);
Part 4: MAC layer;
Release 1
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2 ETSI TS 103 636-4 V1.1.1 (2020-07)
Reference
DTS/DECT-00319
Keywords
DECT-2020, IMT-2020, MAC, NR
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Intellectual Property Rights ................................................................................................................................ 6

Foreword ............................................................................................................................................................. 6

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

2.1 Normative references ......................................................................................................................................... 7

2.2 Informative references ........................................................................................................................................ 7

3 Definition of terms, symbols and abbreviations ....................................................................................... 8

3.1 Terms .................................................................................................................................................................. 8

3.2 Symbols .............................................................................................................................................................. 8

3.3 Abbreviations ..................................................................................................................................................... 8

4 General ..................................................................................................................................................... 9

4.1 Introduction ........................................................................................................................................................ 9

4.2 MAC Architecture .............................................................................................................................................. 9

4.2.1 General .......................................................................................................................................................... 9

4.2.2 MAC Structure .............................................................................................................................................. 9

4.2.3 Identities ..................................................................................................................................................... 11

4.2.3.1 Network ID ........................................................................................................................................... 11

4.2.3.2 Long Radio Device ID (Long RD ID)................................................................................................... 11

4.2.3.3 Short Radio Device ID (Short RD ID) .................................................................................................. 12

4.3 Service .............................................................................................................................................................. 13

4.3.1 Services provided to upper layers ............................................................................................................... 13

4.3.2 Services expected from physical layer ........................................................................................................ 13

4.4 Functions .......................................................................................................................................................... 13

4.5 Channel Structure ............................................................................................................................................. 14

4.5.1 Logical and Transport Channels ................................................................................................................. 14

4.5.2 Mapping Physical layer packet ................................................................................................................... 14

4.6 Order of transmission and figure numbering conventions ................................................................................ 14

5 MAC Layer Procedures .......................................................................................................................... 15

5.1 Spectrum Management Procedures .................................................................................................................. 15

5.1.1 General ........................................................................................................................................................ 15

5.1.2 Operating Channel(s) and Subslot(s) selection ........................................................................................... 15

5.1.3 Last Minute Scan ........................................................................................................................................ 16

5.1.4 Selecting RD for association ....................................................................................................................... 16

5.1.5 Beaconing Transmissions ........................................................................................................................... 17

5.1.6 Power control .............................................................................................................................................. 18

5.2 Broadcast Procedure ......................................................................................................................................... 18

5.2.1 General ........................................................................................................................................................ 18

5.2.2 Broadcast procedure initialization .............................................................................................................. 18

5.2.3 Broadcast transmission ............................................................................................................................... 19

5.3 Random Access procedure ............................................................................................................................... 19

5.3.1 General ........................................................................................................................................................ 19

5.3.2 Announcing Random access resources ....................................................................................................... 20

5.3.3 Random Access transmission ..................................................................................................................... 20

5.3.4 Random Access response ............................................................................................................................ 21

5.4 Scheduled access data transfer ......................................................................................................................... 22

5.5 HARQ Operation .............................................................................................................................................. 23

5.5.1 General ........................................................................................................................................................ 23

5.5.2 Receiver Operation ..................................................................................................................................... 23

5.6 Multiplexing and assembly............................................................................................................................... 24

5.7 Mobility Procedures ......................................................................................................................................... 25

5.8 Association procedure ...................................................................................................................................... 25

5.8.1 General ........................................................................................................................................................ 25

5.8.2 Sending beacon for association ................................................................................................................... 26

5.8.3 Association initiation .................................................................................................................................. 26

5.8.4 Sending association request ........................................................................................................................ 27

5.8.5 Association response................................................................................................................................... 27

5.8.6 Association Release .................................................................................................................................... 28

5.9 Security Procedures .......................................................................................................................................... 28

5.9.1 Mode 1 ........................................................................................................................................................ 28

5.9.1.1 General .................................................................................................................................................. 28

5.9.1.2 Integrity protection ................................................................................................................................ 28

5.9.1.3 Ciphering ............................................................................................................................................... 29

5.10 Reconfiguration ................................................................................................................................................ 31

6 Protocol Data Units, formats and parameters ......................................................................................... 31

6.1 General ............................................................................................................................................................. 31

6.2 Physical Header Field ....................................................................................................................................... 31

6.2.1 General ........................................................................................................................................................ 31

6.2.2 Coding of Feedback info ............................................................................................................................. 33

6.3 MAC PDU ........................................................................................................................................................ 36

6.3.1 General ........................................................................................................................................................ 36

6.3.2 MAC Header type ....................................................................................................................................... 36

6.3.3 MAC Common header ................................................................................................................................ 37

6.3.3.1 DATA MAC PDU header ..................................................................................................................... 37

6.3.3.2 Beacon Header ...................................................................................................................................... 37

6.3.3.3 Unicast Header ...................................................................................................................................... 38

6.3.3.4 RD Broadcasting Header ....................................................................................................................... 38

6.3.4 MAC multiplexing header .......................................................................................................................... 39

6.4 MAC Messages and Information Elements (IEs) ............................................................................................. 42

6.4.1 General ........................................................................................................................................................ 42

6.4.2 MAC messages ........................................................................................................................................... 42

6.4.2.1 General .................................................................................................................................................. 42

6.4.2.2 Network Beacon message ..................................................................................................................... 42

6.4.2.3 Cluster Beacon message ........................................................................................................................ 43

6.4.2.4 Association Request message................................................................................................................ 44

6.4.2.5 Association Response message ............................................................................................................. 46

6.4.2.6 Association Release message ................................................................................................................ 47

6.4.2.7 Reconfiguration Request message ........................................................................................................ 48

6.4.2.8 Reconfiguration Response message ...................................................................................................... 48

6.4.2.9 Additional MAC message ..................................................................................................................... 49

6.4.3 MAC information elements ........................................................................................................................ 49

6.4.3.1 MAC Security Info IE ........................................................................................................................... 49

6.4.3.2 Route Info IE ......................................................................................................................................... 50

6.4.3.3 Resource allocation IE .......................................................................................................................... 51

6.4.3.4 Random Access Resource IE ................................................................................................................ 52

6.4.3.5 RD Capability IE ................................................................................................................................... 54

6.4.3.6 Neighbouring IE .................................................................................................................................... 54

6.4.3.7 Broadcast Indication IE ......................................................................................................................... 55

6.4.3.8 Padding IE ............................................................................................................................................. 56

6.4.3.9 Group Assignment IE ............................................................................................................................ 57

7 Variables, and Timers............................................................................................................................. 58

7.1 General ............................................................................................................................................................. 58

7.2 Variables........................................................................................................................................................... 58

7.3 Timers .............................................................................................................................................................. 59

Annex A (normative): MAC Layer Requirements for Radio Device Classes ................................. 60

A.1 Introduction ............................................................................................................................................ 60

A.2 Radio Device Class (1.1.1.A) ................................................................................................................. 60

A.2.1 Modes ............................................................................................................................................................... 60

A.2.2 System Operation ............................................................................................................................................. 60

A.2.3 Security ............................................................................................................................................................ 60

A.2.4 Feedback Info Formats ..................................................................................................................................... 60

Annex B (normative): Data Link Layer Operation .......................................................................... 61

B.1 Segmentation .......................................................................................................................................... 61

B.2 Routing PDU in Mesh operation ............................................................................................................ 62

History .............................................................................................................................................................. 64

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This Technical Specification (TS) has been produced by ETSI Technical Committee Digital Enhanced Cordless

The present document is part 4 of a multi-part deliverable. Full details of the entire series can be found in part 1 [1].

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

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

The present document is one of the parts of the specification of the DECT-2020 New Radio (NR).

The present document specifies Medium Access Control (MAC) layer and interaction between MAC layer and physical

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 documents which are not found to be publicly available in the expected location might be found at

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

The following referenced documents are necessary for the application of the present document.

[2] ETSI TS 103 636-2: "DECT-2020 New Radio (NR); Part 2: Radio reception and transmission

[3] ETSI TS 103 636-3: "DECT-2020 New Radio (NR); Part 3: Physical layer; Release 1".

[5] NIST Special Publication 800-38B: "Recommendation for Block Cipher Modes of Operation: The

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

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

The following referenced documents are not necessary for the application of the present document but they assist the

[i.1] ETSI EN 300 175 (All parts): "Digital Enhanced Cordless Telecommunications (DECT); Common

Fixed Termination point (FT): operational mode of RD where RD initiates coordinates local radio resources, provides

operating channel: single continuous part of radio spectrum with a defined bandwidth where RDs transmits and/or

Portable Termination point (PT): operational mode of RD where RD selects another RD, which is in FT mode, for

radio device: device with radio transmission and reception capability which can operate in FT and/or PT mode

resource: variable length time unit defined in subslot(s) or slot(s) in single operating channel that RD is using for

NOTE: Subslots in the frame are numbered in increasing order and the first subslot of radio frame is number 0.

For the purposes of the present document, the abbreviations given in ETSI TS 103 636-1 [1] and the following apply.

NOTE: An abbreviation defined in the present document takes precedence over the definition of the same

The objective of this clause is to describe the MAC protocol layer architecture, used identities, used transport channels

This clause describes a model of the MAC i.e. it does not specify or restrict implementations.

The overall MAC structure is depicted in Figure 4.2.2-1. MAC provides DTCH and MTCH logical channels for

transferring higher layer data. The flow of the higher layer data and MAC internal message to physical channels is

depicted with black solid lines. The grey dashed line corresponds MAC internal control interfaces between MAC