ETSI ETS 300 175-4 ed.1 (1992-10)

Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 4: Data Link Control (DLC) layer

DE/RES-03002-4

Radijska oprema in sistemi (RES) – Digitalne evropske brezvrvične telekomunikacije (DECT) – Skupni vmesnik – 4. del: Plast krmiljenja podatkovnih povezav

General Information

• Status: Published
• Publication Date: 26-Oct-1992
• Technical Committee: RES 3 - DECT
• Current Stage: 13 - TB decision to make document historical
• Completion Date: 28-Sep-2001
• Mandate: T-176
• Ref Project: SIST ETS 300 175-4 E1:2003 - Radio Equipment and Systems (RES); Digital European Cordless Telecommunications (DECT) Common interface Part 4: Data link control layer

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 175-4 E1:2003
01-december-2003
5DGLMVNDRSUHPDLQVLVWHPL5(6±'LJLWDOQHHYURSVNHEUH]YUYLþQH
WHOHNRPXQLNDFLMH'(&7±6NXSQLYPHVQLN±GHO3ODVWNUPLOMHQMDSRGDWNRYQLK
SRYH]DY
Radio Equipment and Systems (RES); Digital European Cordless Telecommunications
(DECT) Common interface Part 4: Data link control layer
Ta slovenski standard je istoveten z: ETS 300 175-4 Edition 1
ICS:
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
'(&7
35.100.20 Podatkovni povezovalni sloj Data link layer
SIST ETS 300 175-4 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 175-4 E1:2003

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SIST ETS 300 175-4 E1:2003
EUROPEAN ETS 300 175-4
TELECOMMUNICATION October 1992
STANDARD
Source: ETSI TC-RES Reference: DE/RES 3001-4
ICS: 33.060
DECT
Key words:
Radio Equipment and Systems (RES);
Digital European Cordless Telecommunications (DECT)
Common interface
Part 4: Data link control layer
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
X.400: Internet:
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1992. All rights reserved.
New presentation - see History box

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ETS 300 175-4: October 1992
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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Contents
Foreword.9
1 Scope .11
2 Normative references .12
3 Definitions, symbols and abbreviations .13
3.1 DLC Layer definitions .13
3.2 DLC Layer abbreviations .15
4 Data link control layer overview .18
4.1 General.18
4.2 C-Plane data link service .18
4.3 C-plane broadcast service .20
4.4 U-plane services .20
4.5 Lower layer management entity.20
5 C-plane service characteristics. 21
5.1 Data link service (LAPC+Lc) .21
5.1.1 General . 21
5.1.2 LAPC types of operation. 22
5.1.3 Establishment of information transfer modes .22
5.1.3.1 Data Link Identifier (DLI). 22
5.1.3.2 LAPC states. 22
5.2 Broadcast service (Lb) .23
6 Frame structures for C-plane services .24
6.1 Data link service frame structure .24
6.1.1 General frame structure. 24
6.1.2 Lc frame delimiting and transparency.25
6.1.3 Transmission order.25
6.1.4 Routing to logical channels.26
6.1.4.1 C logical channel.26
F
6.1.4.2 C logical channel .26
S
6.1.5 Invalid frames .27
6.2 Broadcast service frame structure.27
6.2.1 Standard frame structure. 27
6.2.2 Extended frame structure.28
7 Elements of procedures and formats of fields for C-plane peer to peer communication.28
7.1 General.28
7.2 Address field formats .28
7.3 Address field parameters.28
7.3.1 REServed bit (RES) .28
7.3.2 Command Response bit (C/R). 29
7.3.3 SAPI field .29
7.3.4 New Link Flag bit (NLF) .29
7.3.5 LLN-field.29
7.3.6 Data link identifiers.29
7.4 Control field formats. 30
7.5 Control field parameters .30
7.5.1 Poll/Final bit P/F.30
7.5.2 Multiple frame operation variables and sequence numbers.30
7.5.2.1 Modulus.30

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7.5.2.2 Send state Variable V(S).31
7.5.2.3 Acknowledge state Variable V(A).31
7.5.2.4 Send sequence Number N(S).31
7.5.2.5 Receive state Variable V(R) .31
7.5.2.6 Receive sequence Number N(R) .31
7.5.3 Unacknowledged operation variables and sequence numbers.31
7.5.4 Supervisory and Unnumbered function bits S and U .31
7.6 Length indicator field format .32
7.7 Length indicator field parameters.32
7.7.1 Length indicator field extension bit; N .32
7.7.2 More data bit; M .32
7.7.3 Length parameter; LI.32
7.7.4 Extended length parameter; L .33
JJ
7.7.5 Reserved bit; RES.33
7.8 Fill field format .33
7.9 Checksum field format.33
7.10 Checksum field parameters.34
7.11 Commands and responses.35
7.11.1 Information (I) command.35
7.11.2 Receive Ready (RR) command/response.36
7.11.3 Receive Not Ready (RNR) command/response.36
7.11.4 REJect (REJ) command/response.36
7.11.5 Set Asynchronous Balanced Mode (SABM) command.36
7.11.6 Disconnect Mode (DM) response.37
7.11.7 Unnumbered Information (UI) command.37
7.11.8 DISConnect (DISC) command.37
7.11.9 Unnumbered ACK (UA) response.37
8 Primitives.38
8.1 Primitive types .38
8.2 Primitives to the MAC layer (lower layer) .38
8.3 Primitives to network layer (higher layer).38
8.3.1 Parameter definitions.38
8.3.2 S-SAP primitives .40
8.3.2.1 DL-ESTABLISH primitive .40
8.3.2.2 DL-RELEASE primitive.40
8.3.2.3 DL-DATA primitive .40
8.3.2.4 DL-UNIT-DATA primitive.41
8.3.2.5 DL-SUSPEND primitive.41
8.3.2.6 DL-RESUME primitive.41
8.3.2.7 DL-ENC_KEY primitive.41
8.3.2.8 DL-ENCRYPT primitive .42
8.3.3 B-SAP primitives .42
8.3.3.1 DL-BROADCAST primitive.42
8.3.3.2 DL-EXPEDITED primitive .42
8.4 Primitives to the interworking unit.42
8.4.1 Parameter definitions.42
8.4.2 LU -SAP primitives .43
X
8.4.2.1 DL-U-DATA primitive.43
8.4.2.2 DL-U-UNIT-DATA primitive .43
8.4.2.3 DL-U-ERROR primitive.44
9 C-plane peer to peer procedures.45
9.1 General .45
9.2 Point to point acknowledged operation.45
9.2.1 Procedure for the use of the P/F bit.45
9.2.1.1 Class A acknowledged information transfer.45
9.2.1.2 Class B acknowledged information transfer.45
9.2.2 Use of LLN.46
9.2.2.1 Class A operation .46

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9.2.2.2 Class B operation .46
9.2.3 Link establishment and information transfer in class A operation.46
9.2.3.1 Establishing class A operation .46
9.2.3.2 Class A acknowledged information transfer .47
9.2.3.4 Reception of class A I-frames.47
9.2.3.5 Receiving acknowledgements.48
9.2.3.6 Waiting for acknowledgement.48
9.2.3.7 Release of class A operation. 49
9.2.3.8 Re-establishment of class A operation.49
9.2.4 Establishing class B multiple frame operation.49
9.2.4.1 Overview .49
9.2.4.2 Class B multiple frame establishment procedures.50
9.2.4.3 Class B LLN assignment procedures.51
9.2.4.3.1 PT establishment.51
9.2.4.3.2 FT establishment.52
9.2.5 Link maintenance and information transfer in class B multiple frame
operation .52
9.2.5.1 Transmitting I-frames.52
9.2.5.2 Receiving I-frames.53
9.2.5.2.1 P bit set to 1.53
9.2.5.2.2 P bit set to 0.53
9.2.5.3 Sending and receiving acknowledgements .54
9.2.5.3.1 Sending acknowledgements.54
9.2.5.3.2 Receiving acknowledgements.54
9.2.5.4 Receiving REJ-frames.54
9.2.5.5 Receiving RNR-frames.55
9.2.5.6 LAPC own receiver busy condition .57
9.2.5.7 Waiting acknowledgement.57
9.2.6 Release of class B multiple frame operation.58
9.2.7 Link suspension and resumption .59
9.2.7.1 Link suspension.59
9.2.7.1.1 Class B acknowledged suspend .59
9.2.7.1.2 Unacknowledged suspend.60
9.2.7.2 Class B link resumption.60
9.2.7.3 Connection handover.62
9.2.7.3.1 Class A connection handover.63
9.2.7.3.2 Class B connection handover.63
9.2.7.3.3 Expiry of connection handover timer.64
9.2.8 Re-establishment of class B multiframe operation.64
9.2.8.1 Criteria for re-establishment . 64
9.2.9 Exception handling.66
9.2.9.1 General .66
9.2.9.2 Class B exception condition reporting and recovery.66
9.2.9.2.1 N(S) sequence error.66
9.2.9.2.2 N(R) sequence error.66
9.2.9.2.3 Timer recovery condition.67
9.3 Unacknowledged operation .67
9.3.1 Use of LLN for unacknowledged information transfer. 67
9.3.2 Class U link establishment.67
9.3.3 Unacknowledged information transfer.67
9.3.3.1 Transmission of unacknowledged information.67
9.3.3.2 Reception of unacknowledged information .67
9.3.4 Unacknowledged release .67
9.4 Broadcast operation.68
9.4.1 Normal operation.68
9.4.1.1 Procedure in the Fixed radio Termination (FT).68
9.4.1.2 Procedure in the Portable radio Termination (PT).68
9.4.2 Expedited operation.68
9.4.2.1 Procedure in the Fixed radio Termination (FT).68
9.4.2.2 Procedure in the Portable radio Termination (PT).68

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9.5 MAC layer interfaces.69
9.5.1 MC-SAP .69
9.5.1.1 C-plane overview .69
9.5.1.2 C-plane service data procedures.69
9.5.1.3 U-plane service data .70
9.5.2 MB-SAP .70
9.5.2.1 C-plane overview .70
9.5.2.2 C-plane service data procedures.70
9.5.2.3 U-plane service data .71
9.5.3 MA-SAP .71
9.5.3.1 Overview.71
9.5.3.2 Service data procedures .71
10 Management procedures .72
10.1 Lower Layer Management Entity (LLME).72
10.2 MAC connection management .72
10.2.1 MAC connection set-up.72
10.2.2 MAC connection release .73
10.2.3 MAC connection modification.73
10.2.4 MAC connection identifiers .74
10.2.4.1 Overview.74
10.2.4.2 Advanced MAC Connection Identifiers (AMCI) .74
10.2.4.3 Basic MAC Connection Identifiers (BMCI).75
10.2.4.4 MAC Connection Endpoint Identifier (MCEI).75
10.2.5 Selection of logical channel (C or C ) .75
S F
10.3 DLC C-plane (LAPC) management .76
10.3.1 Provision of link signature.76
10.3.2 Routing of connection oriented links .76
10.3.3 Routing of connectionless links .76
10.4 DLC U-plane (LUX) management.76
10.4.1 U-plane establishment.77
10.4.2 U-plane release.77
10.4.3 U-plane suspend and resume .77
10.5 Connection handover management .77
10.6 Connection ciphering management.78
10.6.1 Providing a key to the MAC layer.78
10.6.2 Starting and stopping the ciphering: .78
10.6.3 Connection handover .78
11 U-plane service characteristics .80
11.1 General .80
11.2 LU1 TRansparent UnProtected service (TRUP).80
11.3 LU2 Frame RELay service (FREL).81
11.3.1 General .81
11.3.2 Checksum operation .82
11.3.3 Segmentation and transmission class.82
11.3.4 Data transmission.83
11.3.4.1 Send side procedure.83
11.3.4.2 Receive side procedure.83
11.4 LU3 Frame SWItching service (FSWI).83
11.5 LU4 Forward Error Correction service (FEC).84
11.6 LU5 Basic Rate AdapTion service (BRAT).85
11.6.1 Overview .85
11.6.2 Protected service operation.86
11.6.2.1 General.86
11.6.2.2 Data buffering and initial rate adaption.86
11.6.2.3 Multi-channel set multiplexing.87
11.6.2.4 Segmentation of Multiplexed Data Units (MDU) .89
11.6.2.5 Frame sequencing and addition of control and fill octets.89
11.6.2.6 Frame transmission.90

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11.6.3 Unprotected service operation. 91
11.6.3.1 General .91
11.6.3.2 Data buffering and initial rate adaption.91
11.6.3.3 Multi-channel set multiplexing.91
11.6.3.4 Segmentation of multiplexed data units.93
11.6.3.5 Frame transmission .93
11.7 LU6 Secondary Rate AdapTion service (SRAT).93
11.7.1 General . 93
11.8 LU16 ESCape Service (ESC). 94
11.8.1 General . 94
12 Frame structures for U-plane services.95
12.1 General.95
12.2 FU1 frame structure .95
12.2.1 General frame structure.95
12.2.2 FU1 buffering procedures.96
12.2.3 Minimum delay (speech) operation.96
12.2.4 Connection handover .96
12.2.5 Transmission order.97
12.3 FU2 frame structure .97
12.3.1 General frame structure.97
12.3.2 FU2 buffering procedures.97
12.3.3 Connection handover .98
12.3.4 Transmission order.98
12.4 FU3 frame structure .98
12.4.1 General frame structure.98
12.4.2 FU3 buffering procedures.99
12.4.3 Connection handover .99
12.4.4 Transmission order.99
12.5 FU4 frame structure .99
12.5.1 General frame structure.99
12.5.2 FU4 buffering procedures. 100
12.5.3 Connection handover . 101
12.5.4 Transmission order. 101
12.6 FU5 frame structure . 101
12.6.1 General frame structure. 101
12.6.2 FU5 buffering procedures. 102
12.6.3 Connection handover . 102
12.6.4 Transmission order. 102
12.7 FU6 frame structure . 103
12.7.1 General frame structure. 103
12.7.2 FU6 buffering procedures. 103
12.7.3 Connection handover . 104
12.7.4 Transmission order. 104
13 Elements of procedures and formats of fields for U-plane peer to peer communication. 105
13.1 General. 105
13.2 Address elements . 105
13.2.1 Address field format . 105
13.2.2 Address field paramet
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