SIST EN 300 175-4 V2.7.1:2018
(Main)Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI) - Part 4: Data Link Control (DLC) layer
Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI) - Part 4: Data Link Control (DLC) layer
The present document is one of the parts of the specification of the Digital Enhanced Cordless Telecommunications
(DECT) Common Interface (CI).
The present document specifies the physical channel arrangements. DECT physical channels are radio communication
paths between two radio end points. A radio end point is either part of the fixed infrastructure, a privately owned Fixed
Part (FP), typically a base station, or a Portable Part (PP), typically a handset. The assignment of one or more particular
physical channels to a call is the task of higher layers.
The Physical Layer (PHL) interfaces with the Medium Access Control (MAC) layer, and with the Lower Layer
Management Entity (LLME). On the other side of the PHL is the radio transmission medium which has to be shared
extensively with other DECT users and a wide variety of other radio services. The tasks of the PHL can be grouped into
five categories:
a) to modulate and demodulate radio carriers with a bit stream of a defined rate to create a radio frequency
channel;
b) to acquire and maintain bit and slot synchronization between transmitters and receivers;
c) to transmit or receive a defined number of bits at a requested time and on a particular frequency;
d) to add and remove the synchronization field and the Z-field used for rear end collision detection;
e) to observe the radio environment to report signal strengths.
The present document includes New Generation DECT, a further development of the DECT standard introducing
wideband speech, improved data services, new slot types and other technical enhancements.
Digitalne izboljšane brezvrvične telekomunikacije (DECT) - Skupni vmesnik (CI) - 4. del: Plast krmiljenja podatkovnih povezav (DLC)
Ta dokument je eden od delov specifikacije skupnega vmesnika (CI) za digitalne izboljšane brezvrvične telekomunikacije (DECT).
Ta dokument določa ureditve fizičnega kanala. Fizični kanali digitalnih izboljšanih brezvrvičnih telekomunikacij so poti radijske komunikacije med dvema radijskima končnima točkama. Radijska končna točka je del fiksne strukture, tj. fiksni del (FP) v zasebni lasti – običajno bazna postaja, ali prenosni del (PP) – običajno slušalka. Dodelitev enega ali več določenih fizičnih kanalov klicu je opravilo, ki ga izvajajo višje plasti.
Fizična plast (PHL) je povezana s plastjo krmiljenja dostopa do prenosnega medija (MAC) in entiteto upravljanja nižjih plasti (LLME). Na drugi strani fizične plasti je medij za radijski prenos, ki je namenjen obsežni skupni uporabi več uporabnikov digitalnih izboljšanih brezvrvičnih telekomunikacij in različnim radijskim storitvam. Opravila fizične plasti je mogoče združiti v pet kategorij:
a) modulacija in demodulacija radijskih nosilcev z bitnim pretokom določene stopnje za ustvarjanje radiofrekvenčnega kanala;
b) pridobivanje ter vzdrževanje bitne in režne sinhronizacije med oddajniki in prejemniki;
c) oddajanje ali prejemanje določenega števila bitov ob zahtevanem času in na določeni frekvenci;
d) dodajanje in odstranjevanje polja sinhronizacije in polja Z, ki se uporablja za zaznavanje trka v zadnji del vozila;
e) opazovanje radijskega okolja za sporočanje moči signala.
Ta dokument vključuje novo generacijo digitalnih izboljšanih brezvrvičnih telekomunikacij, nadaljnji razvoj standarda za digitalne izboljšane brezvrvične telekomunikacije, ki uvaja širokopasovni govor, izpopolnjene podatkovne storitve, nove tipe rež in druge tehnične izpopolnitve.
General Information
Buy Standard
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI) - Part 4: Data Link Control (DLC) layer35.100.20Podatkovni povezovalni slojData link layer33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:ETSI EN 300 175-4 V2.7.1 (2017-11)SIST EN 300 175-4 V2.7.1:2018en01-februar-2018SIST EN 300 175-4 V2.7.1:2018SLOVENSKI
STANDARD
SIST EN 300 175-4 V2.7.1:2018
ETSI EN 300 175-4 V2.7.1 (2017-11) Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 4: Data Link Control (DLC) layer
EUROPEAN STANDARD SIST EN 300 175-4 V2.7.1:2018
ETSI ETSI EN 300 175-4 V2.7.1 (2017-11) 2
Reference REN/DECT-00307-4 Keywords DECT, DLC, IMT-2000, mobility, radio, TDD, TDMA ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88
Important notice The present document can be downloaded from: http://www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please send your comment to one of the following services: https://portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2017. All rights reserved.
DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSM® and the GSM logo are trademarks registered and owned by the GSM Association. SIST EN 300 175-4 V2.7.1:2018
ETSI ETSI EN 300 175-4 V2.7.1 (2017-11) 3 Contents Intellectual Property Rights . 13 Foreword . 13 Modal verbs terminology . 13 1 Scope . 14 2 References . 14 2.1 Normative references . 14 2.2 Informative references . 15 3 Definitions, symbols and abbreviations . 16 3.1 Definitions . 16 3.2 Symbols and abbreviations . 16 4 Data Link Control (DLC) layer overview . 19 4.1 General . 19 4.2 C-plane services . 20 4.3 U-plane services . 20 4.4 Lower Layer Management Entity (LLME) . 24 5 C-plane service characteristics . 24 5.1 Data link service (LAPC+Lc) . 24 5.1.1 General . 24 5.1.2 LAPC types of operation . 25 5.1.3 Establishment of information transfer modes . 25 5.1.3.1 Data Link Identifier (DLI) . 25 5.1.3.2 LAPC states. 25 5.2 Broadcast service (Lb) . 26 6 Frame structures for C-plane services . 27 6.1 Data link service frame structure . 27 6.1.0 Frame format type FA. 27 6.1.1 General frame structure . 27 6.1.2 Lc frame delimiting and transparency . 28 6.1.3 Transmission order . 28 6.1.4 Routing to logical channels . 28 6.1.4.0 General . 28 6.1.4.1 CF/CLF logical channel . 29 6.1.4.2 CS/CLS logical channel . 29 6.1.5 Invalid frames . 29 6.2 Broadcast service frame structure. 30 6.2.1 Standard frame structure . 30 6.2.2 Extended frame structure . 30 7 Elements of procedures and formats of fields for C-plane peer-to-peer communication . 31 7.1 General . 31 7.2 Address field formats . 31 7.3 Address field parameters . 31 7.3.1 REServed bit (RES) . 31 7.3.2 Command Response (C/R) bit . 31 7.3.3 SAPI field . 31 7.3.4 New Link Flag (NLF) bit . 32 7.3.5 LLN-field . 32 7.3.6 Data Link Identifiers (DLI) . 32 7.4 Control field formats . 33 7.5 Control field parameters . 33 7.5.1 Poll/Final (P/F) bit . 33 7.5.2 Multiple frame operation variables and sequence numbers . 33 7.5.2.1 Modulus . 33 SIST EN 300 175-4 V2.7.1:2018
ETSI ETSI EN 300 175-4 V2.7.1 (2017-11) 4 7.5.2.2 Send state Variable V(S) . 33 7.5.2.3 Acknowledge state Variable V(A) . 34 7.5.2.4 Send sequence Number N(S) . 34 7.5.2.5 Receive state Variable V(R) . 34 7.5.2.6 Receive sequence Number N(R) . 34 7.5.3 Unacknowledged operation variables and sequence numbers . 34 7.5.4 Supervisory and Unnumbered function bits S and U . 34 7.6 Length indicator field format. 34 7.7 Length indicator field parameters . 35 7.7.1 Length indicator field extension bit (N) . 35 7.7.2 More data bit (M) . 35 7.7.3 Length parameter (LI) . 35 7.7.4 Extended length parameter (LJJ) . 36 7.7.5 Reserved bit (RES) . 36 7.8 Fill field format . 36 7.9 Checksum field format . 36 7.10 Checksum field parameters . 36 7.11 Commands and responses . 37 7.11.0 General . 37 7.11.1 Information (I) command . 38 7.11.2 Receive Ready (RR) command/response . 38 7.11.3 Receive Not Ready (RNR) command/response . 39 7.11.4 REJect (REJ) command/response . 39 7.11.5 Set Asynchronous Balanced Mode (SABM) command . 39 7.11.6 Disconnect Mode (DM) response . 39 7.11.7 Unnumbered Information (UI) command . 39 7.11.8 DISConnect (DISC) command . 40 7.11.9 Unnumbered ACK (UA) response . 40 8 Primitives . 40 8.1 Primitive types . 40 8.2 Primitives to the MAC layer (lower layer) . 40 8.3 Primitives to the NWK layer (higher layer) . 41 8.3.0 General . 41 8.3.1 Parameter definitions . 41 8.3.2 S-SAP primitives . 42 8.3.2.0 List of primitives . 42 8.3.2.1 DL_ESTABLISH primitive . 42 8.3.2.2 DL_RELEASE primitive . 43 8.3.2.3 DL_DATA primitive . 43 8.3.2.4 DL_UNIT_DATA primitive . 43 8.3.2.5 DL_SUSPEND primitive . 43 8.3.2.6 DL_RESUME primitive . 44 8.3.2.7 DL_ENC_KEY primitive . 44 8.3.2.8 DL_ENCRYPT primitive . 44 8.3.2.9 DL_SERVICE_MOD primitive . 45 8.3.3 B-SAP primitives . 45 8.3.3.0 List of primitives . 45 8.3.3.1 DL_BROADCAST primitive . 45 8.3.3.2 DL_EXPEDITED primitive . 45 8.4 Primitives to the interworking unit . 46 8.4.0 General . 46 8.4.1 Parameter definitions . 46 8.4.2 LUX-SAP primitives . 46 8.4.2.0 List of primitives . 46 8.4.2.1 DL_U_DATA primitive . 46 8.4.2.2 DL_U_UNIT_DATA primitive . 47 8.4.2.3 DL_U_ERROR primitive . 47 9 C-plane peer-to-peer procedures . 47 9.1 General . 47 9.2 Point-to-point acknowledged operation. 48 SIST EN 300 175-4 V2.7.1:2018
ETSI ETSI EN 300 175-4 V2.7.1 (2017-11) 5 9.2.1 Procedure for the use of the P/F bit . 48 9.2.1.1 Class A acknowledged information transfer . 48 9.2.1.2 Class B acknowledged information transfer . 48 9.2.2 Use of LLN . 48 9.2.2.1 Class A operation . 48 9.2.2.2 Class B operation . 48 9.2.3 Link establishment and information transfer in class A operation . 49 9.2.3.1 Establishing class A operation . 49 9.2.3.2 Class A acknowledged information transfer . 49 9.2.3.3 Transmission of class A I-frames . 50 9.2.3.4 Reception of class A I-frames . 50 9.2.3.5 Receiving acknowledgements . 50 9.2.3.6 Waiting for acknowledgement . 51 9.2.3.7 Release of class A operation . 51 9.2.3.8 Re-establishment of class A operation . 51 9.2.4 Establishing class B multiple frame operation . 52 9.2.4.1 Overview . 52 9.2.4.2 Class B multiple frame establishment procedures . 52 9.2.4.3 Class B LLN assignment procedures . 53 9.2.4.3.0 General . 53 9.2.4.3.1 PT establishment . 54 9.2.4.3.2 FT establishment . 54 9.2.5 Link maintenance and information transfer in class B multiple frame operation . 54 9.2.5.0 General . 54 9.2.5.1 Transmitting I-frames. 55 9.2.5.2 Receiving I-frames . 55 9.2.5.2.0 General . 55 9.2.5.2.1 P bit set to 1 . 55 9.2.5.2.2 P bit set to 0 . 55 9.2.5.3 Sending and receiving acknowledgements . 56 9.2.5.3.1 Sending acknowledgements . 56 9.2.5.3.2 Receiving acknowledgements . 56 9.2.5.4 Receiving REJ-frames . 56 9.2.5.5 Receiving RNR-frames . 57 9.2.5.6 LAPC own receiver busy condition . 58 9.2.5.7 Waiting acknowledgement . 59 9.2.5.8 Appropriate supervisory frame. 59 9.2.6 Release of class B multiple frame operation . 59 9.2.7 Link suspension and resumption . 60 9.2.7.1 Link suspension . 60 9.2.7.1.0 General . 60 9.2.7.1.1 Class B acknowledged suspend . 60 9.2.7.1.2 Unacknowledged suspend . 61 9.2.7.2 Class B link resumption . 62 9.2.7.3 Connection handover . 63 9.2.7.3.0 General . 63 9.2.7.3.1 Class A connection handover . 65 9.2.7.3.2 Class B connection handover . 65 9.2.7.3.3 Expiry of connection handover timer . 66 9.2.8 Re-establishment of class B multi-frame operation . 66 9.2.8.1 Criteria for re-establishment. 66 9.2.8.2 Procedure . 66 9.2.9 Exception handling . 67 9.2.9.1 General . 67 9.2.9.2 Class B exception condition reporting and recovery . 67 9.2.9.2.0 General . 67 9.2.9.2.1 N(S) sequence error . 67 9.2.9.2.2 N(R) sequence error . 68 9.2.9.2.3 Timer recovery condition . 68 9.2.9.2.4 Collision of identical transmitted and received commands . 68 9.3 Unacknowledged operation . 68 9.3
...
ETSI EN 300 175-4 V2.7.1 (2017-11)
EUROPEAN STANDARD
Digital Enhanced Cordless Telecommunications (DECT);
Common Interface (CI);
Part 4: Data Link Control (DLC) layer
---------------------- Page: 1 ----------------------
2 ETSI EN 300 175-4 V2.7.1 (2017-11)
Reference
REN/DECT-00307-4
Keywords
DECT, DLC, IMT-2000, mobility, radio, TDD,
TDMA
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2017.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M logo is protected for the benefit of its Members.
GSM® and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 ETSI EN 300 175-4 V2.7.1 (2017-11)
Contents
Intellectual Property Rights . 13
Foreword . 13
Modal verbs terminology . 13
1 Scope . 14
2 References . 14
2.1 Normative references . 14
2.2 Informative references . 15
3 Definitions, symbols and abbreviations . 16
3.1 Definitions . 16
3.2 Symbols and abbreviations . 16
4 Data Link Control (DLC) layer overview . 19
4.1 General . 19
4.2 C-plane services . 20
4.3 U-plane services . 20
4.4 Lower Layer Management Entity (LLME) . 24
5 C-plane service characteristics . 24
5.1 Data link service (LAPC+Lc) . 24
5.1.1 General . 24
5.1.2 LAPC types of operation . 25
5.1.3 Establishment of information transfer modes . 25
5.1.3.1 Data Link Identifier (DLI) . 25
5.1.3.2 LAPC states. 25
5.2 Broadcast service (Lb) . 26
6 Frame structures for C-plane services . 27
6.1 Data link service frame structure . 27
6.1.0 Frame format type FA. 27
6.1.1 General frame structure . 27
6.1.2 Lc frame delimiting and transparency . 28
6.1.3 Transmission order . 28
6.1.4 Routing to logical channels . 28
6.1.4.0 General . 28
6.1.4.1 C /CL logical channel . 29
F F
6.1.4.2 C /CL logical channel . 29
S S
6.1.5 Invalid frames . 29
6.2 Broadcast service frame structure. 30
6.2.1 Standard frame structure . 30
6.2.2 Extended frame structure . 30
7 Elements of procedures and formats of fields for C-plane peer-to-peer communication . 31
7.1 General . 31
7.2 Address field formats . 31
7.3 Address field parameters . 31
7.3.1 REServed bit (RES) . 31
7.3.2 Command Response (C/R) bit . 31
7.3.3 SAPI field . 31
7.3.4 New Link Flag (NLF) bit . 32
7.3.5 LLN-field . 32
7.3.6 Data Link Identifiers (DLI) . 32
7.4 Control field formats . 33
7.5 Control field parameters . 33
7.5.1 Poll/Final (P/F) bit . 33
7.5.2 Multiple frame operation variables and sequence numbers . 33
7.5.2.1 Modulus . 33
ETSI
---------------------- Page: 3 ----------------------
4 ETSI EN 300 175-4 V2.7.1 (2017-11)
7.5.2.2 Send state Variable V(S) . 33
7.5.2.3 Acknowledge state Variable V(A) . 34
7.5.2.4 Send sequence Number N(S) . 34
7.5.2.5 Receive state Variable V(R) . 34
7.5.2.6 Receive sequence Number N(R) . 34
7.5.3 Unacknowledged operation variables and sequence numbers . 34
7.5.4 Supervisory and Unnumbered function bits S and U . 34
7.6 Length indicator field format. 34
7.7 Length indicator field parameters . 35
7.7.1 Length indicator field extension bit (N) . 35
7.7.2 More data bit (M) . 35
7.7.3 Length parameter (L ) . 35
I
7.7.4 Extended length parameter (L ) . 36
JJ
7.7.5 Reserved bit (RES) . 36
7.8 Fill field format . 36
7.9 Checksum field format . 36
7.10 Checksum field parameters . 36
7.11 Commands and responses . 37
7.11.0 General . 37
7.11.1 Information (I) command . 38
7.11.2 Receive Ready (RR) command/response . 38
7.11.3 Receive Not Ready (RNR) command/response . 39
7.11.4 REJect (REJ) command/response . 39
7.11.5 Set Asynchronous Balanced Mode (SABM) command . 39
7.11.6 Disconnect Mode (DM) response . 39
7.11.7 Unnumbered Information (UI) command . 39
7.11.8 DISConnect (DISC) command . 40
7.11.9 Unnumbered ACK (UA) response . 40
8 Primitives . 40
8.1 Primitive types . 40
8.2 Primitives to the MAC layer (lower layer) . 40
8.3 Primitives to the NWK layer (higher layer) . 41
8.3.0 General . 41
8.3.1 Parameter definitions . 41
8.3.2 S-SAP primitives . 42
8.3.2.0 List of primitives . 42
8.3.2.1 DL_ESTABLISH primitive . 42
8.3.2.2 DL_RELEASE primitive . 43
8.3.2.3 DL_DATA primitive . 43
8.3.2.4 DL_UNIT_DATA primitive . 43
8.3.2.5 DL_SUSPEND primitive . 43
8.3.2.6 DL_RESUME primitive . 44
8.3.2.7 DL_ENC_KEY primitive . 44
8.3.2.8 DL_ENCRYPT primitive . 44
8.3.2.9 DL_SERVICE_MOD primitive . 45
8.3.3 B-SAP primitives . 45
8.3.3.0 List of primitives . 45
8.3.3.1 DL_BROADCAST primitive . 45
8.3.3.2 DL_EXPEDITED primitive . 45
8.4 Primitives to the interworking unit . 46
8.4.0 General . 46
8.4.1 Parameter definitions . 46
8.4.2 LU -SAP primitives . 46
X
8.4.2.0 List of primitives . 46
8.4.2.1 DL_U_DATA primitive . 46
8.4.2.2 DL_U_UNIT_DATA primitive . 47
8.4.2.3 DL_U_ERROR primitive . 47
9 C-plane peer-to-peer procedures . 47
9.1 General . 47
9.2 Point-to-point acknowledged operation. 48
ETSI
---------------------- Page: 4 ----------------------
5 ETSI EN 300 175-4 V2.7.1 (2017-11)
9.2.1 Procedure for the use of the P/F bit . 48
9.2.1.1 Class A acknowledged information transfer . 48
9.2.1.2 Class B acknowledged information transfer . 48
9.2.2 Use of LLN . 48
9.2.2.1 Class A operation . 48
9.2.2.2 Class B operation . 48
9.2.3 Link establishment and information transfer in class A operation . 49
9.2.3.1 Establishing class A operation . 49
9.2.3.2 Class A acknowledged information transfer . 49
9.2.3.3 Transmission of class A I-frames . 50
9.2.3.4 Reception of class A I-frames . 50
9.2.3.5 Receiving acknowledgements . 50
9.2.3.6 Waiting for acknowledgement . 51
9.2.3.7 Release of class A operation . 51
9.2.3.8 Re-establishment of class A operation . 51
9.2.4 Establishing class B multiple frame operation . 52
9.2.4.1 Overview . 52
9.2.4.2 Class B multiple frame establishment procedures . 52
9.2.4.3 Class B LLN assignment procedures . 53
9.2.4.3.0 General . 53
9.2.4.3.1 PT establishment . 54
9.2.4.3.2 FT establishment . 54
9.2.5 Link maintenance and information transfer in class B multiple frame operation . 54
9.2.5.0 General . 54
9.2.5.1 Transmitting I-frames. 55
9.2.5.2 Receiving I-frames . 55
9.2.5.2.0 General . 55
9.2.5.2.1 P bit set to 1 . 55
9.2.5.2.2 P bit set to 0 . 55
9.2.5.3 Sending and receiving acknowledgements . 56
9.2.5.3.1 Sending acknowledgements . 56
9.2.5.3.2 Receiving acknowledgements . 56
9.2.5.4 Receiving REJ-frames . 56
9.2.5.5 Receiving RNR-frames . 57
9.2.5.6 LAPC own receiver busy condition . 58
9.2.5.7 Waiting acknowledgement . 59
9.2.5.8 Appropriate supervisory frame. 59
9.2.6 Release of class B multiple frame operation . 59
9.2.7 Link suspension and resumption . 60
9.2.7.1 Link suspension . 60
9.2.7.1.0 General . 60
9.2.7.1.1 Class B acknowledged suspend . 60
9.2.7.1.2 Unacknowledged suspend . 61
9.2.7.2 Class B link resumption . 62
9.2.7.3 Connection handover . 63
9.2.7.3.0 General . 63
9.2.7.3.1 Class A connection handover . 65
9.2.7.3.2 Class B connection handover . 65
9.2.7.3.3 Expiry of connection handover timer . 66
9.2.8 Re-establishment of class B multi-frame operation . 66
9.2.8.1 Criteria for re-establishment. 66
9.2.8.2 Procedure . 66
9.2.9 Exception handling . 67
9.2.9.1 General . 67
9.2.9.2 Class B exception condition reporting and recovery . 67
9.2.9.2.0 General . 67
9.2.9.2.1 N(S) sequence error . 67
9.2.9.2.2 N(R) sequence error . 68
9.2.9.2.3 Timer recovery condition . 68
9.2.9.2.4 Collision of identical transmitted and received commands . 68
9.3 Unacknowledged operation . 68
9.3.1 Use of LLN for unacknowledged information transfer . 68
ETSI
---------------------- Page: 5 -
...
Draft ETSI EN 300 175-4 V2.6.6 (2017-06)
EUROPEAN STANDARD
Digital Enhanced Cordless Telecommunications (DECT);
Common Interface (CI);
Part 4: Data Link Control (DLC) layer
---------------------- Page: 1 ----------------------
2 Draft ETSI EN 300 175-4 V2.6.6 (2017-06)
Reference
REN/DECT-00307-4
Keywords
DECT, DLC, IMT-2000, mobility, radio, TDD,
TDMA
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
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ETSI
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3 Draft ETSI EN 300 175-4 V2.6.6 (2017-06)
Contents
Intellectual Property Rights . 13
Foreword . 13
Modal verbs terminology . 13
1 Scope . 14
2 References . 14
2.1 Normative references . 14
2.2 Informative references . 15
3 Definitions, symbols and abbreviations . 16
3.1 Definitions . 16
3.2 Symbols and abbreviations . 16
4 Data Link Control (DLC) layer overview . 19
4.1 General . 19
4.2 C-plane services . 20
4.3 U-plane services . 20
4.4 Lower Layer Management Entity (LLME) . 24
5 C-plane service characteristics . 24
5.1 Data link service (LAPC+Lc) . 24
5.1.1 General . 24
5.1.2 LAPC types of operation . 25
5.1.3 Establishment of information transfer modes . 25
5.1.3.1 Data Link Identifier (DLI) . 25
5.1.3.2 LAPC states. 25
5.2 Broadcast service (Lb) . 26
6 Frame structures for C-plane services . 27
6.1 Data link service frame structure . 27
6.1.0 Frame format type FA. 27
6.1.1 General frame structure . 27
6.1.2 Lc frame delimiting and transparency . 28
6.1.3 Transmission order . 28
6.1.4 Routing to logical channels . 28
6.1.4.0 General . 28
6.1.4.1 C /CL logical channel . 29
F F
6.1.4.2 C /CL logical channel . 29
S S
6.1.5 Invalid frames . 29
6.2 Broadcast service frame structure. 30
6.2.1 Standard frame structure . 30
6.2.2 Extended frame structure . 30
7 Elements of procedures and formats of fields for C-plane peer-to-peer communication . 31
7.1 General . 31
7.2 Address field formats . 31
7.3 Address field parameters . 31
7.3.1 REServed bit (RES) . 31
7.3.2 Command Response (C/R) bit . 31
7.3.3 SAPI field . 31
7.3.4 New Link Flag (NLF) bit . 32
7.3.5 LLN-field . 32
7.3.6 Data Link Identifiers (DLI) . 32
7.4 Control field formats . 33
7.5 Control field parameters . 33
7.5.1 Poll/Final (P/F) bit . 33
7.5.2 Multiple frame operation variables and sequence numbers . 33
7.5.2.1 Modulus . 33
ETSI
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4 Draft ETSI EN 300 175-4 V2.6.6 (2017-06)
7.5.2.2 Send state Variable V(S) . 33
7.5.2.3 Acknowledge state Variable V(A) . 34
7.5.2.4 Send sequence Number N(S) . 34
7.5.2.5 Receive state Variable V(R) . 34
7.5.2.6 Receive sequence Number N(R) . 34
7.5.3 Unacknowledged operation variables and sequence numbers . 34
7.5.4 Supervisory and Unnumbered function bits S and U . 34
7.6 Length indicator field format. 34
7.7 Length indicator field parameters . 35
7.7.1 Length indicator field extension bit (N) . 35
7.7.2 More data bit (M) . 35
7.7.3 Length parameter (L ) . 35
I
7.7.4 Extended length parameter (L ) . 36
JJ
7.7.5 Reserved bit (RES) . 36
7.8 Fill field format . 36
7.9 Checksum field format . 36
7.10 Checksum field parameters . 36
7.11 Commands and responses . 37
7.11.0 General . 37
7.11.1 Information (I) command . 38
7.11.2 Receive Ready (RR) command/response . 38
7.11.3 Receive Not Ready (RNR) command/response . 39
7.11.4 REJect (REJ) command/response . 39
7.11.5 Set Asynchronous Balanced Mode (SABM) command . 39
7.11.6 Disconnect Mode (DM) response . 39
7.11.7 Unnumbered Information (UI) command . 40
7.11.8 DISConnect (DISC) command . 40
7.11.9 Unnumbered ACK (UA) response . 40
8 Primitives . 40
8.1 Primitive types . 40
8.2 Primitives to the MAC layer (lower layer) . 40
8.3 Primitives to the NWK layer (higher layer) . 41
8.3.0 General . 41
8.3.1 Parameter definitions . 41
8.3.2 S-SAP primitives . 42
8.3.2.0 List of primitives . 42
8.3.2.1 DL_ESTABLISH primitive . 42
8.3.2.2 DL_RELEASE primitive . 43
8.3.2.3 DL_DATA primitive . 43
8.3.2.4 DL_UNIT_DATA primitive . 43
8.3.2.5 DL_SUSPEND primitive . 43
8.3.2.6 DL_RESUME primitive . 44
8.3.2.7 DL_ENC_KEY primitive . 44
8.3.2.8 DL_ENCRYPT primitive . 44
8.3.2.9 DL_SERVICE_MOD primitive . 45
8.3.3 B-SAP primitives . 45
8.3.3.0 List of primitives . 45
8.3.3.1 DL_BROADCAST primitive . 45
8.3.3.2 DL_EXPEDITED primitive . 45
8.4 Primitives to the interworking unit . 46
8.4.0 General . 46
8.4.1 Parameter definitions . 46
8.4.2 LU -SAP primitives . 46
X
8.4.2.0 List of primitives . 46
8.4.2.1 DL_U_DATA primitive . 46
8.4.2.2 DL_U_UNIT_DATA primitive . 47
8.4.2.3 DL_U_ERROR primitive . 47
9 C-plane peer-to-peer procedures . 47
9.1 General . 47
9.2 Point to point acknowledged operation . 48
ETSI
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5 Draft ETSI EN 300 175-4 V2.6.6 (2017-06)
9.2.1 Procedure for the use of the P/F bit . 48
9.2.1.1 Class A acknowledged information transfer . 48
9.2.1.2 Class B acknowledged information transfer . 48
9.2.2 Use of LLN . 48
9.2.2.1 Class A operation . 48
9.2.2.2 Class B operation . 48
9.2.3 Link establishment and information transfer in class A operation . 49
9.2.3.1 Establishing class A operation . 49
9.2.3.2 Class A acknowledged information transfer . 49
9.2.3.3 Transmission of class A I-frames . 50
9.2.3.4 Reception of class A I-frames . 50
9.2.3.5 Receiving acknowledgements . 50
9.2.3.6 Waiting for acknowledgement . 51
9.2.3.7 Release of class A operation . 51
9.2.3.8 Re-establishment of class A operation . 52
9.2.4 Establishing class B multiple frame operation . 52
9.2.4.1 Overview . 52
9.2.4.2 Class B multiple frame establishment procedures . 52
9.2.4.3 Class B LLN assignment procedures . 54
9.2.4.3.0 General . 54
9.2.4.3.1 PT establishment . 54
9.2.4.3.2 FT establishment . 54
9.2.5 Link maintenance and information transfer in class B multiple frame operation . 54
9.2.5.0 General . 54
9.2.5.1 Transmitting I-frames. 55
9.2.5.2 Receiving I-frames . 55
9.2.5.2.0 General . 55
9.2.5.2.1 P bit set to 1 . 55
9.2.5.2.2 P bit set to 0 . 56
9.2.5.3 Sending and receiving acknowledgements . 56
9.2.5.3.1 Sending acknowledgements . 56
9.2.5.3.2 Receiving acknowledgements . 56
9.2.5.4 Receiving REJ-frames . 56
9.2.5.5 Receiving RNR-frames . 57
9.2.5.6 LAPC own receiver busy condition . 58
9.2.5.7 Waiting acknowledgement . 59
9.2.5.8 Appropriate supervisory frame. 59
9.2.6 Release of class B multiple frame operation . 59
9.2.7 Link suspension and resumption . 60
9.2.7.1 Link suspension . 60
9.2.7.1.0 General . 60
9.2.7.1.1 Class B acknowledged suspend . 61
9.2.7.1.2 Unacknowledged suspend . 61
9.2.7.2 Class B link resumption . 62
9.2.7.3 Connection handover . 63
9.2.7.3.0 General . 63
9.2.7.3.1 Class A connection handover . 65
9.2.7.3.2 Class B connection handover . 65
9.2.7.3.3 Expiry of connection handover timer . 66
9.2.8 Re-establishment of class B multi-frame operation . 66
9.2.8.1 Criteria for re-establishment. 66
9.2.8.2 Procedure . 66
9.2.9 Exception handling . 67
9.2.9.1 General . 67
9.2.9.2 Class B exception condition reporting and recovery . 67
9.2.9.2.0 General . 67
9.2.9.2.1 N(S) sequence error . 67
9.2.9.2.2 N(R) sequence error . 68
9.2.9.2.3 Timer recovery condition . 68
9.2.9.2.4 Collision of identical transmitted and received commands . 68
9.3 Unacknowledged operation . 68
9.3.1 Use of LLN for unacknowledged information transfer . 68
ETSI
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