ETSI TS 144 064-2016 Digital cellular telecommunications system (Phase 2+)(GSM) Mobile Station - Serving GPRS Support Node (MS-SGSN) Logical Link Control (LLC) Layer Specification .pdf

1、 ETSI TS 1Digital cellular telecoMobile Station - ServiLogical Link Co(3GPP TS 44.0TECHNICAL SPECIFICATION144 064 V13.0.0 (2016communications system (Phav ng GPRS Support Node (MSntrol (LLC) Layer Specificati.064 version 13.0.0 Release 13GLOBAL SYSTEMOBILE COMMUN16-01) hase 2+); S-SGSN); ation 13) T

2、EM FOR ICATIONSRETSI ETSI TS 144 064 V13.0.0 (2016-01)13GPP TS 44.064 version 13.0.0 Release 13Reference RTS/TSGC-0144064vd00 Keywords GSM 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 Associat

3、ion but non lucratif enregistre la Sous-Prfecture 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 v

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7、cept 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. European Telecommunications Standards Institute 2016. All rights reserved

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9、 GSM Association. ETSI ETSI TS 144 064 V13.0.0 (2016-01)23GPP TS 44.064 version 13.0.0 Release 13Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly availa

10、ble 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 server

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12、 essential to the present document. 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 in

13、terpreted 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

14、 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 ETSI TS 144 064 V13.0.0 (201

15、6-01)33GPP TS 44.064 version 13.0.0 Release 13Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 7g31 Scope 8g32 References 9g33 Definitions and abbreviations . 10g33.1 Definitions 10g33.2 Abbreviations . 11g34 Overview description of LLC functions and proce

16、dures 11g34.1 Reference model . 12g34.2 General description of the LLC protocol 12g34.2.1 Services required by the lower layers . 13g34.3 Unacknowledged operation 13g34.4 Acknowledged operation 13g34.5 Establishment of information transfer modes . 14g34.5.1 Data link connection identification . 14g3

17、4.5.2 Logical link states . 14g34.5.3 TLLI assignment. 14g34.5.4 Establishment of ABM operation . 14g34.6 Data confidentiality 14g34.7 LLC layer structure 15g34.7.1 Logical Link Entity . 15g34.7.2 Multiplex procedure 16g34.7.3 Logical Link Management 16g34.8 GPRS Mobility Management . 16g34.9 Short

18、Message Service . 16g34.10 Tunnelling Of Messages . 16g35 Frame structure . 16g35.1 General . 16g35.2 Address field 17g35.3 Control field . 17g35.4 Information field 17g35.5 Frame Check Sequence (FCS) field . 17g35.6 Transparency 18g35.6.1 Bit transparency 18g35.6.2 Information protection 18g35.6.3

19、Octet alignment . 18g35.7 Format convention 18g35.7.1 Numbering convention . 18g35.7.2 Order of transmission 19g35.7.3 Field mapping convention 19g35.8 Invalid frames . 19g36 Elements of procedures and formats of fields 19g36.1 General . 19g36.2 Address field format and variables . 20g36.2.1 Protoco

20、l Discriminator bit (PD) 20g36.2.2 Command/Response bit (C/R) 20g36.2.3 Service Access Point Identifier (SAPI) . 20g36.3 Control field formats, parameters, and variables 21g36.3.1 Information transfer format - I 23g3ETSI ETSI TS 144 064 V13.0.0 (2016-01)43GPP TS 44.064 version 13.0.0 Release 136.3.2

21、 Supervisory format - S 23g36.3.3 Unconfirmed Information format - UI 23g36.3.4 Unnumbered format - U 23g36.3.5 Control field parameters and associated state variables 23g36.3.5.1 Poll/Final bit (P/F) 23g36.3.5.2 Acknowledgement request bit (A) 23g36.3.5.3 Modulus 24g36.3.5.4 ABM variables and seque

22、nce numbers . 24g36.3.5.4.1 Send state variable V(S) 24g36.3.5.4.2 Acknowledge state variable V(A) . 24g36.3.5.4.3 Send sequence number N(S) 24g36.3.5.4.4 Receive state variable V(R) . 24g36.3.5.4.5 Receive sequence number N(R) 24g36.3.5.4.6 SACK bitmap R(n) 25g36.3.5.4.7 I frame buffer variable B .

23、 25g36.3.5.4.8 Other parameters and variables . 25g36.3.5.5 Unacknowledged operation variables and parameters 25g36.3.5.5.1 Encryption mode bit (E) 25g36.3.5.5.2 Protected Mode bit (PM) . 25g36.3.5.5.3 Unconfirmed send state variable V(U) 26g36.3.5.5.4 Unconfirmed sequence number N(U) 26g36.3.5.5.5

24、Unconfirmed receive state variable V(UR) . 26g36.3.5.5.6 Other parameters and variables . 26g36.4 Commands and responses 26g36.4.1 Unnumbered (U) frames . 26g36.4.1.1 Set Asynchronous Balanced Mode (SABM) command 26g36.4.1.2 Disconnect (DISC) command . 27g36.4.1.3 Unnumbered Acknowledgement (UA) res

25、ponse. 27g36.4.1.4 Disconnected Mode (DM) response 27g36.4.1.5 Frame Reject (FRMR) response 27g36.4.1.6 Exchange Identification (XID) command/response 28g36.4.1.7 NULL command . 31g36.4.2 Unconfirmed Information (UI) frame . 31g36.4.2.1 Unconfirmed Information (UI) command . 31g36.4.2.2 Unconfirmed

26、Information (UI) Dummy command . 31g36.4.3 Combined Information (I) and Supervisory (S) frames 31g36.4.3.1 Receive Ready (RR) command / response 32g36.4.3.2 Acknowledgement (ACK) command / response . 32g36.4.3.3 Selective Acknowledgement (SACK) command / response . 32g36.4.3.4 Receive Not Ready (RNR

27、) command / response 32g37 Elements for layer-to-layer communication . 32g37.1 Definition of service primitives and parameters . 32g37.1.1 Primitives types 33g37.1.1.1 Request 33g37.1.1.2 Indication 33g37.1.1.3 Response . 33g37.1.1.4 Confirm . 33g37.1.2 LLC layer service primitives 33g37.2 Primitive

28、 procedures. 34g37.2.1 GMM - LLME primitives . 34g37.2.1.1 LLGMM-ASSIGN 34g37.2.1.2 LLGMM-RESET 35g37.2.1.3 LLGMM-TRIGGER . 35g37.2.1.4 LLGMM-SUSPEND . 35g37.2.1.5 LLGMM-RESUME 36g37.2.1.6 LLGMM-PAGE 36g37.2.1.7 LLGMM-IOV . 36g37.2.1.8 LLGMM-STATUS . 36g37.2.1.9 LLGMM-PSHO 36g37.2.2 Layer 3 - LLE pr

29、imitives 36g37.2.2.1 LL-RESET 36g3ETSI ETSI TS 144 064 V13.0.0 (2016-01)53GPP TS 44.064 version 13.0.0 Release 137.2.2.2 LL-ESTABLISH . 37g37.2.2.3 LL-RELEASE. 37g37.2.2.4 LL-XID . 37g37.2.2.5 LL-DATA . 37g37.2.2.6 LL-UNITDATA 37g37.2.2.7 LL-STATUS . 37g37.2.3 LLE - RLC/MAC primitives . 38g37.2.3.1

30、GRR-DATA 38g37.2.3.2 GRR-UNITDATA 38g37.2.4 LLE - BSSGP primitives 38g37.2.4.1 BSSGP-DL-UNITDATA 38g37.2.4.2 BSSGP-UL-UNITDATA 38g37.2.5 LLME - LLE primitives 39g38 Definition of the LLC peer-to-peer protocol 39g38.1 General . 39g38.2 Procedure for the use of the P/F bit 40g38.3 TLLI assignment proc

31、edures 40g38.3.1 TLLI assignment . 40g38.3.2 TLLI change . 40g38.3.3 TLLI unassignment . 40g38.4 Procedures for unacknowledged information transfer 41g38.4.1 Transmission of unacknowledged information . 41g38.4.2 Receipt of unacknowledged information 41g38.5 Procedures for establishment and release

32、of ABM operation . 41g38.5.1 Establishment of ABM operation . 41g38.5.1.1 General 41g38.5.1.2 Establishment procedures 41g38.5.1.3 Procedure on expiry of timer T200 . 43g38.5.2 Termination of ABM operation 43g38.5.2.1 General 43g38.5.2.2 Release procedure . 43g38.5.2.3 Procedure on expiry of timer T

33、200 . 44g38.5.3 Automatic negotiation of LLC layer and layer-3 parameters . 44g38.5.3.1 Negotiation of parameter Reset . 45g38.5.3.2 Negotiation of parameter m. 46g38.5.3.3 Unsuccessful XID negotiation 46g38.5.3.4 Procedure on expiry of timer T200 . 47g38.5.4 TLLI Assigned / ADM state . 47g38.5.5 Co

34、llision of unnumbered commands 47g38.5.5.1 Identical transmitted and received commands 48g38.5.5.2 Different transmitted and received commands 48g38.5.6 Unsolicited DM response and SABM or DISC command 48g38.6 Procedures for information transfer in ABM operation 49g38.6.1 Transmitting I frames 49g38

35、.6.2 Receiving I frames 50g38.6.3 Sending and receiving acknowledgements . 50g38.6.3.1 Sending acknowledgements 50g38.6.3.2 Receiving acknowledgements . 51g38.6.3.3 Requesting acknowledgements . 51g38.6.4 Peer receiver busy condition . 51g38.6.4.1 Supervisory frame selection 52g38.6.5 Own receiver b

36、usy condition 52g38.6.6 Waiting for acknowledgement 52g38.7 Re-establishment of ABM operation 53g38.7.1 Criteria for re-establishment . 53g38.7.2 Procedures. 53g38.8 Exception condition reporting and recovery 53g38.8.1 Invalid frame condition . 53g38.8.2 Frame rejection condition . 54g38.8.3 Receipt

37、 of a FRMR response frame 54g38.8.4 Unsolicited response frames . 54g3ETSI ETSI TS 144 064 V13.0.0 (2016-01)63GPP TS 44.064 version 13.0.0 Release 138.9 List of LLC layer parameters . 54g38.9.1 LLC version number (Version) . 55g38.9.2 Input Offset Value (IOV) 55g38.9.3 Retransmission timers (T200 an

38、d T201) . 55g38.9.4 Maximum number of retransmissions (N200) 55g38.9.5 Maximum number of octets in an information field (N201) . 55g38.9.6 Maximum number of octets in the layer-3 header (N202) 55g38.9.7 Maximum I frame buffer size (m) 55g38.9.8 Maximum number of outstanding I frames (k) . 56g38.9.9

39、LLC layer parameter default values 56g3Annex A (normative): Ciphering 57g3A.1 General . 57g3A.2 Ciphering algorithm interface 57g3A.2.1 Generation of Input 58g3Annex B (normative): Tunnelling of Messages (TOM) 59g3B.1 TOM Protocol Envelope structure . 59g3B.1.1 TOM Protocol Discriminator . 59g3B.1.2

40、 Remaining Length of TOM Protocol Header . 60g3B.1.3 Remaining Octets of TOM Protocol Header 60g3B.1.4 Message Capsule 60g3Annex C (informative): LLC layer states for peer-to-peer operation . 61g3C.1 General . 61g3C.2 An overview of the peer-to-peer LLC layer states . 61g3Annex D (informative): Chan

41、ge History 63g3History 65g3ETSI ETSI TS 144 064 V13.0.0 (2016-01)73GPP TS 44.064 version 13.0.0 Release 13Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and ma

42、y change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2

43、 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporat

44、ed in the document. ETSI ETSI TS 144 064 V13.0.0 (2016-01)83GPP TS 44.064 version 13.0.0 Release 131 Scope The present document defines the Logical Link Control (LLC) layer protocol to be used for packet data transfer between the Mobile Station (MS) and Serving GPRS Support Node (SGSN). It defines t

45、he frame structure, elements of procedure, format of fields, and procedures for the proper operation of the logical link control layer. It is based on ideas contained in IS-130 21, ISO 3309 16, ISO 4335 17, and ISO 7809 18, 19, 20 (HDLC of ISO), as well ITU-T Q.920 13 and Q.921 14 (LAPD). The concep

46、ts, the overview description of LLC layer functions and procedures, and the relationship with other Technical Specifications are described in general terms in 3GPP TS 23.060 5. LLC spans from the Mobile Station (MS) to the Serving GPRS Support Node (SGSN). LLC is intended for use with both acknowled

47、ged and unacknowledged data transfer. The frame formats defined for LLC are based on those defined for LAPD and RLP. However, there are important differences between LLC and other protocols, in particular with regard to frame delimitation methods and transparency mechanisms. These differences are ne

48、cessary for independence from the radio path. The LLC procedures are modelled upon the concepts of HDLC as outlined in ISO 4335. Data sequence integrity between the data source and data sink is effected by means of a cyclic numbering scheme. An independent numbering scheme is used for each logical d

49、ata link, as identified by the a data link connection identifier. LLC supports two modes of operation: - Unacknowledged peer-to-peer operation: A logical link entity may initiate transmissions to a peer entity without prior establishment of a logical connection with the peer entity. LLC does not guarantee in-order delivery. LLC can detect errors in a received frame, and, depending on whether the frame is sent in protected mode or not, either discard or deliver the erroneous frame. No error recovery procedures are defined at the LLC layer. Higher-layer protocols