ETSI TS 144 064-2017 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 telecommMobile Station - ServiLogical Link Con(3GPP TS 44.0TECHNICAL SPECIFICATION144 064 V13.3.0 (2017mmunications system (Phase v ng GPRS Support Node (MSontrol (LLC) Layer Specificati.064 version 13.3.0 Release 13GLOBAL SYSTEMOBILE COMMUN17-01) e 2+) (GSM); S-SGSN); ati

2、on 13) TEM FOR ICATIONSRETSI ETSI TS 144 064 V13.3.0 (2017-01)13GPP TS 44.064 version 13.3.0 Release 13Reference RTS/TSGC-0144064vd30 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

3、Association 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

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9、d and owned by the GSM Association. ETSI ETSI TS 144 064 V13.3.0 (2017-01)23GPP TS 44.064 version 13.3.0 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,

10、is publicly available 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 t

11、he ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may

12、be, or may become, 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.

13、These should be interpreted 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

14、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 provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 14

15、4 064 V13.3.0 (2017-01)33GPP TS 44.064 version 13.3.0 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 f

16、unctions and procedures 11g34.0 General . 11g34.1 Reference model . 12g34.2 General description of the LLC protocol 13g34.2.0 LLC protocol functions . 13g34.2.1 Services required by the lower layers . 13g34.3 Unacknowledged operation 13g34.4 Acknowledged operation 14g34.5 Establishment of informatio

17、n transfer modes . 14g34.5.1 Data link connection identification . 14g34.5.2 Logical link states . 14g34.5.3 TLLI assignment. 14g34.5.4 Establishment of ABM operation . 14g34.6 Data confidentiality 15g34.6a Integrity protection . 15g34.7 LLC layer structure 16g34.7.0 General 16g34.7.1 Logical Link E

18、ntity . 16g34.7.2 Multiplex procedure 17g34.7.3 Logical Link Management 17g34.8 GPRS Mobility Management . 17g34.9 Short Message Service . 17g34.10 Tunnelling Of Messages . 17g35 Frame structure . 17g35.1 General . 17g35.2 Address field 18g35.3 Control field . 18g35.4 Information field 18g35.5 Frame

19、 Check Sequence (FCS) field . 19g35.5a Message Authentication Code (MAC) field . 19g35.6 Transparency 19g35.6.1 Bit transparency 19g35.6.2 Information protection 19g35.6.3 Octet alignment . 20g35.7 Format convention 20g35.7.1 Numbering convention . 20g35.7.2 Order of transmission 20g35.7.3 Field map

20、ping convention 20g35.8 Invalid frames . 21g36 Elements of procedures and formats of fields 21g36.1 General . 21g36.2 Address field format and variables . 21g3ETSI ETSI TS 144 064 V13.3.0 (2017-01)43GPP TS 44.064 version 13.3.0 Release 136.2.0 Address field format . 21g36.2.1 Protocol Discriminator

21、bit (PD) 22g36.2.2 Command/Response bit (C/R) 22g36.2.3 Service Access Point Identifier (SAPI) . 22g36.3 Control field formats, parameters, and variables 23g36.3.0 Control field formats . 23g36.3.1 Information transfer format - I 24g36.3.2 Supervisory format - S 24g36.3.3 Unconfirmed Information for

22、mat - UI 24g36.3.4 Unnumbered format - U 25g36.3.5 Control field parameters and associated state variables 25g36.3.5.1 Poll/Final bit (P/F) 25g36.3.5.2 Acknowledgement request bit (A) 25g36.3.5.2a Integrity Protection bit (IP) . 25g36.3.5.3 Modulus 25g36.3.5.4 ABM variables and sequence numbers . 25

23、g36.3.5.4.1 Send state variable V(S) 25g36.3.5.4.2 Acknowledge state variable V(A) . 25g36.3.5.4.3 Send sequence number N(S) 26g36.3.5.4.4 Receive state variable V(R) . 26g36.3.5.4.5 Receive sequence number N(R) 26g36.3.5.4.6 SACK bitmap R(n) 26g36.3.5.4.7 I frame buffer variable B . 26g36.3.5.4.8 O

24、ther parameters and variables . 26g36.3.5.5 Unacknowledged operation variables and parameters 27g36.3.5.5.1 Encryption mode bit (E) 27g36.3.5.5.2 Protected Mode bit (PM) . 27g36.3.5.5.3 Unconfirmed send state variable V(U) 27g36.3.5.5.4 Unconfirmed sequence number N(U) 27g36.3.5.5.5 Unconfirmed rece

25、ive state variable V(UR) . 27g36.3.5.5.6 Other parameters and variables . 27g36.4 Commands and responses 27g36.4.1 General 27g36.4.1 Unnumbered (U) frames . 28g36.4.1.1 Set Asynchronous Balanced Mode (SABM) command 28g36.4.1.2 Disconnect (DISC) command . 28g36.4.1.3 Unnumbered Acknowledgement (UA) r

26、esponse. 28g36.4.1.4 Disconnected Mode (DM) response 29g36.4.1.5 Frame Reject (FRMR) response 29g36.4.1.6 Exchange Identification (XID) command/response 30g36.4.1.7 NULL command . 33g36.4.2 Unconfirmed Information (UI) frame . 33g36.4.2.1 Unconfirmed Information (UI) command . 33g36.4.2.2 Unconfirme

27、d Information (UI) Dummy command . 33g36.4.3 Combined Information (I) and Supervisory (S) frames 34g36.4.3.1 Receive Ready (RR) command / response 34g36.4.3.2 Acknowledgement (ACK) command / response . 34g36.4.3.3 Selective Acknowledgement (SACK) command / response . 34g36.4.3.4 Receive Not Ready (R

28、NR) command / response 35g37 Elements for layer-to-layer communication . 35g37.1 Definition of service primitives and parameters . 35g37.1.0 General 35g37.1.1 Primitives types 35g37.1.1.1 Request 35g37.1.1.2 Indication 35g37.1.1.3 Response . 35g37.1.1.4 Confirm . 36g37.1.2 LLC layer service primitiv

29、es 36g37.2 Primitive procedures. 37g37.2.1 GMM - LLME primitives . 37g37.2.1.1 LLGMM-ASSIGN 37g3ETSI ETSI TS 144 064 V13.3.0 (2017-01)53GPP TS 44.064 version 13.3.0 Release 137.2.1.2 LLGMM-RESET 38g37.2.1.3 LLGMM-TRIGGER . 38g37.2.1.4 LLGMM-SUSPEND . 38g37.2.1.5 LLGMM-RESUME 39g37.2.1.6 LLGMM-PAGE 3

30、9g37.2.1.7 LLGMM-IOV . 39g37.2.1.8 LLGMM-STATUS . 39g37.2.1.9 LLGMM-PSHO 39g37.2.1.10 LLGMM-ASSIGN-USERPLANE 39g37.2.2 Layer 3 - LLE primitives 40g37.2.2.1 LL-RESET 40g37.2.2.2 LL-ESTABLISH . 40g37.2.2.3 LL-RELEASE. 40g37.2.2.4 LL-XID . 40g37.2.2.5 LL-DATA . 40g37.2.2.6 LL-UNITDATA 40g37.2.2.7 LL-ST

31、ATUS . 41g37.2.3 LLE - RLC/MAC primitives . 41g37.2.3.0 General 41g37.2.3.1 GRR-DATA 41g37.2.3.2 GRR-UNITDATA 41g37.2.4 LLE - BSSGP primitives 41g37.2.4.0 General 41g37.2.4.1 BSSGP-DL-UNITDATA 42g37.2.4.2 BSSGP-UL-UNITDATA 42g37.2.5 LLME - LLE primitives 42g38 Definition of the LLC peer-to-peer prot

32、ocol 42g38.1 General . 42g38.2 Procedure for the use of the P/F bit 43g38.3 TLLI assignment procedures 43g38.3.0 General 43g38.3.1 TLLI assignment . 43g38.3.2 TLLI change . 43g38.3.3 TLLI unassignment . 44g38.4 Procedures for unacknowledged information transfer 44g38.4.0 General 44g38.4.1 Transmissi

33、on of unacknowledged information . 44g38.4.2 Receipt of unacknowledged information 44g38.5 Procedures for establishment and release of ABM operation . 45g38.5.1 Establishment of ABM operation . 45g38.5.1.1 General 45g38.5.1.2 Establishment procedures 45g38.5.1.3 Procedure on expiry of timer T200 . 4

34、6g38.5.2 Termination of ABM operation 46g38.5.2.1 General 46g38.5.2.2 Release procedure . 47g38.5.2.3 Procedure on expiry of timer T200 . 47g38.5.3 Automatic negotiation of LLC layer and layer-3 parameters . 47g38.5.3.0 General 47g38.5.3.1 Negotiation of parameter Reset . 48g38.5.3.2 Negotiation of

35、parameter m. 49g38.5.3.3 Unsuccessful XID negotiation 49g38.5.3.4 Procedure on expiry of timer T200 . 50g38.5.4 TLLI Assigned / ADM state . 50g38.5.5 Collision of unnumbered commands 51g38.5.5.0 General 51g38.5.5.1 Identical transmitted and received commands 51g38.5.5.2 Different transmitted and rec

36、eived commands 52g38.5.6 Unsolicited DM response and SABM or DISC command 52g38.6 Procedures for information transfer in ABM operation 52g38.6.0 General 52g3ETSI ETSI TS 144 064 V13.3.0 (2017-01)63GPP TS 44.064 version 13.3.0 Release 138.6.1 Transmitting I frames 53g38.6.2 Receiving I frames 53g38.6

37、.3 Sending and receiving acknowledgements . 54g38.6.3.0 General 54g38.6.3.1 Sending acknowledgements 54g38.6.3.2 Receiving acknowledgements . 54g38.6.3.3 Requesting acknowledgements . 55g38.6.4 Peer receiver busy condition . 55g38.6.4.1 Supervisory frame selection 56g38.6.5 Own receiver busy conditi

38、on 56g38.6.6 Waiting for acknowledgement 56g38.7 Re-establishment of ABM operation 56g38.7.1 Criteria for re-establishment . 56g38.7.2 Procedures. 57g38.8 Exception condition reporting and recovery 57g38.8.0 General 57g38.8.1 Invalid frame condition . 57g38.8.2 Frame rejection condition . 57g38.8.3

39、Receipt of a FRMR response frame 57g38.8.4 Unsolicited response frames . 58g38.9 List of LLC layer parameters . 58g38.9.0 General 58g38.9.1 LLC version number (Version) . 58g38.9.2 Input Offset Value (IOV) 58g38.9.2.1 General 58g38.9.2.2 IOV values for ciphering (IOV-I and IOV-UI) . 59g38.9.2.3 IOV

40、values for integrity protection (i-IOV-UI, i-IOV-UI-cnt and MAC-IOV-UI) . 59g38.9.3 Retransmission timers (T200 and T201) . 59g38.9.4 Maximum number of retransmissions (N200) 59g38.9.5 Maximum number of octets in an information field (N201) . 59g38.9.6 Maximum number of octets in the layer-3 header

41、(N202) 60g38.9.7 Maximum I frame buffer size (m) 60g38.9.8 Maximum number of outstanding I frames (k) . 60g38.9.9 LLC layer parameter default values 61g3Annex A (normative): Ciphering 62g3A.1 General . 62g3A.2 Ciphering algorithm interface 62g3A.2.0 General . 62g3A.2.1 Generation of Input 63g3Annex

42、B (normative): Tunnelling of Messages (TOM) 64g3B.1 TOM Protocol Envelope structure . 64g3B.1.0 TOM Protocol Envelope format . 64g3B.1.1 TOM Protocol Discriminator . 65g3B.1.2 Remaining Length of TOM Protocol Header . 65g3B.1.3 Remaining Octets of TOM Protocol Header 65g3B.1.4 Message Capsule 65g3An

43、nex C (informative): LLC layer states for peer-to-peer operation . 66g3C.1 General . 66g3C.2 An overview of the peer-to-peer LLC layer states . 66g3Annex D (informative): Change History 68g3History 70g3ETSI ETSI TS 144 064 V13.3.0 (2017-01)73GPP TS 44.064 version 13.3.0 Release 13Foreword This Techn

44、ical 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 may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by

45、 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 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incr

46、emented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 144 064 V13.3.0 (2017-01)83GPP TS 44.064 version 13.3.0 Release 131 Scope The present docume

47、nt 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 the frame structure, elements of procedure, format of fields, and procedures for the proper operation of the logical link cont

48、rol 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 concepts, the overview description of LLC layer functions and procedures, and the relationship with other Technical Specifications

49、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 acknowledged 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 necessary for independence from the radio path. The LLC procedures are modelled upon the concep