1、 ETSI TS 124 244 V14.0.0 (2017-05) Universal Mobile Telecommunications System (UMTS); LTE; Wireless LAN control plane protocol for trusted WLAN access to EPC; Stage 3 (3GPP TS 24.244 version 14.0.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 124 244 V14.0.0 (2017-05)13GPP TS 24.244 version 14.0
2、.0 Release 14Reference RTS/TSGC-0124244ve00 Keywords LTE,UMTS 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 but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Im
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9、ation. ETSI ETSI TS 124 244 V14.0.0 (2017-05)23GPP TS 24.244 version 14.0.0 Release 14Intellectual 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 available for ETS
10、I 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 (https:/ip
11、r.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 be, or may become, essential
12、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 interpreted a
13、s 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 not“, “wil
14、l“, “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 124 244 V14.0.0 (2017-05)33GPP
15、TS 24.244 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 6g31 Scope 7g32 References 7g33 Definitions and abbreviations . 7g33.1 Definitions 7g33.2 Abbreviations . 8g34 General . 8g34.1 Overview 8g34.2 Protocol stack . 9g34.2.1 Ge
16、neral 9g34.2.2 UDP port numbers for WLCP. 9g34.2.2.1 General 9g34.2.2.2 UE procedure 9g34.2.2.3 TWAG procedure 9g34.2.3 IP addresses of WLCP message 9g34.2.3.1 General 9g34.2.3.2 UE procedure 9g34.2.3.3 TWAG procedure 10g34.2.4 DTLS usage 10g34.3 WLCP layer states 10g34.3.1 General 10g34.3.2 WLCP la
17、yer states in the UE 10g34.3.2.1 PDN CONNECTIVITY NOT ESTABLISHED . 10g34.3.2.2 PDN CONNECTIVITY ESTABLISHED 11g34.3.2.3 PROCEDURE TRANSACTION INACTIVE 11g34.3.2.4 PROCEDURE TRANSACTION PENDING . 11g34.3.3 WLCP layer states in the TWAG 11g34.3.3.1 PDN CONNECTIVITY NOT ESTABLISHED . 11g34.3.3.2 PDN C
18、ONNECTIVITY PENDING 11g34.3.3.3 PDN CONNECTIVITY ESTABLISHED 11g34.3.3.4 PDN DISCONNECT PENDING 11g34.3.3.5 PROCEDURE TRANSACTION INACTIVE 12g34.3.3.6 PROCEDURE TRANSACTION PENDING . 12g34.4 IP address allocation . 12g35 Wireless LAN control plane protocol Procedures 13g35.1 General . 13g35.1.1 Over
19、view 13g35.1.2 Services provided by lower layers 13g35.1.3 Principles of address handling for WLCP procedures 13g35.1.4 Abnormal cases in the UE 13g35.1.5 Abnormal cases in the TWAG 13g35.1.6 Handling of APN based congestion control 14g35.2 PDN connectivity establishment procedure . 14g35.2.1 Genera
20、l 14g35.2.2 PDN connectivity establishment procedure initiation . 14g35.2.3 PDN connectivity establishment procedure accepted by the TWAG . 15g35.2.3.1 PDN connectivity establishment accepted by the UE . 17g35.2.3.2 PDN connectivity establishment not accepted by the UE . 17g35.2.4 PDN connectivity p
21、rocedure not accepted by the TWAG 17g35.2.5 Abnormal cases in the UE 18g3ETSI ETSI TS 124 244 V14.0.0 (2017-05)43GPP TS 24.244 version 14.0.0 Release 145.2.6 Abnormal cases on the network side 19g35.3 TWAG initiated PDN disconnection procedure . 19g35.3.1 General 19g35.3.2 Procedure description . 19
22、g35.3.3 Abnormal cases in the UE 20g35.3.4 Abnormal cases in the TWAG 20g35.4 UE requested PDN disconnection procedure . 21g35.4.1 General 21g35.4.2 Procedure description . 21g35.4.3 Abnormal cases in the UE 21g35.4.4 Abnormal cases in the TWAG 22g35.5 STATUS message 22g35.6 TWAG initiated PDN conne
23、ctivity modification procedure 23g35.6.1 General 23g35.6.2 Procedure description . 23g35.6.3 PDN connectivity modification procedure accepted by the UE . 23g35.6.4 PDN connectivity modification procedure not accepted by the UE . 23g35.6.5 Abnormal cases in the UE 23g35.6.6 Abnormal cases in the TWAG
24、 24g35.7 UE requested PDN connectivity modification procedure. 24g35.7.1 General 24g35.7.2 Procedure description . 24g35.7.3 PDN connectivity modification procedure accepted by the network 24g35.7.4 PDN connectivity modification procedure not accepted by the network 25g35.7.5 Abnormal cases in the U
25、E 25g35.7.6 Abnormal cases in the TWAG 25g35.8 PGW initiated local PDN disconnection in the TWAG . 25g35.8.1 General 25g35.8.2 Procedure description . 25g35.9 Local PDN disconnection in the UE initiated from 3GPP access 26g35.9.1 General 26g35.9.2 Procedure description . 26g36 Handling of unknown, u
26、nforeseen, and erroneous protocol data . 26g36.1 General . 26g36.2 Message too short . 26g36.3 Unknown or unforeseen procedure transaction identity or PDN connection ID 27g36.3.1 Procedure transaction identity. 27g36.3.2 PDN connection ID . 27g36.4 Unknown or unforeseen message type . 28g36.5 Non-se
27、mantical mandatory information element errors . 28g36.5.1 Common procedures . 28g36.5.2 PDN connection management. 28g36.6 Unknown and unforeseen IEs in the non-imperative message part 29g36.6.1 IEIs unknown in the message . 29g36.6.2 Out of sequence IEs 29g36.6.3 Repeated IEs . 29g36.7 Non-imperati
28、ve message part errors . 29g36.7.1 General 29g36.7.2 Syntactically incorrect optional IEs 29g36.7.3 Conditional IE errors 29g36.8 Messages with semantically incorrect contents 30g37 Message functional definitions and contents 30g37.1 PDN connectivity request . 30g37.1.1 Message definition 30g37.1.2
29、Access point name 30g37.1.3 Protocol configuration options 30g37.1.4 NBIFOM container . 30g37.2 PDN connectivity accept 31g37.2.1 Message definition 31g37.2.2 Protocol configuration options 31g3ETSI ETSI TS 124 244 V14.0.0 (2017-05)53GPP TS 24.244 version 14.0.0 Release 147.2.3 Cause 31g37.2.4 NBIFO
30、M container . 31g37.3 PDN connectivity reject . 31g37.3.1 Message definition 31g37.3.2 Protocol configuration options 32g37.3.3 Tw1 value . 32g37.4 PDN disconnect request . 32g37.4.1 Message definition 32g37.4.2 Protocol configuration options 32g37.5 PDN disconnect accept . 33g37.5.1 Message definit
31、ion 33g37.5.2 Protocol configuration options 33g37.6 PDN disconnect reject 33g37.6.1 Message definition 33g37.6.2 Protocol configuration options 33g37.7 PDN connectivity complete 34g37.7.1 Message definition 34g37.8 Status message 34g37.8.1 Message definition 34g37.9 PDN modification request 34g37.9
32、.1 Message definition 34g37.9.2 Protocol configuration options 35g37.9.3 NBIFOM container . 35g37.10 PDN modification accept . 35g37.10.1 Message definition 35g37.10.2 Protocol configuration options 35g37.10.3 NBIFOM container . 35g37.11 PDN modification reject . 36g37.11.1 Message definition 36g37.
33、11.2 Protocol configuration options 36g37.11.3 NBIFOM container . 36g37.12 PDN modification indication 36g37.12.1 Message definition 36g37.12.2 Protocol configuration options 37g37.12.3 NBIFOM container . 37g38 General message format and information elements coding 37g38.1 General . 37g38.2 Message
34、type 38g38.3 Procedure transaction identity 38g38.4 Request type . 39g38.5 PDN type 39g38.6 Access point name 39g38.7 Protocol configuration options . 39g38.8 PDN address . 39g38.9 PDN connection ID 39g38.10 User plane connection ID . 40g38.11 Cause 40g38.12 GPRS timer 3 . 40g38.13 NBIFOM container.
35、 40g39 List of system parameters . 41g39.1 Timers 41g3Annex A (Informative): IANA UDP port registration form . 43g3Annex B (informative): Change history . 45g3History 46g3ETSI ETSI TS 124 244 V14.0.0 (2017-05)63GPP TS 24.244 version 14.0.0 Release 14Foreword This Technical Specification has been pro
36、duced 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 the TSG with an identifying ch
37、ange 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 incremented for all changes of subs
38、tance, 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 124 244 V14.0.0 (2017-05)73GPP TS 24.244 version 14.0.0 Release 141 Scope The present document specifies the procedures of
39、the Wireless LAN control plane protocol (WLCP) for trusted WLAN access to EPC which is used between User Equipment (UE) and Trusted WLAN Access Gateway (TWAG) for multi-connection mode as specified in 3GPP TS 23.402 2. This document also defines the message format, information elements coding, error
40、 handling and system parameters applied by the WLCP protocol. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - References are either specific (identified by date of publication, edition number, version num
41、ber, etc.) or non-specific. - For a specific reference, subsequent revisions do not apply. - For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that do
42、cument in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 23.402: “Architecture Enhancements for non-3GPP accesses“. 3 3GPP TS 24.302: “Access to the 3GPP Evolved Packet Core (EPC) via non-3GPP access networks; Stage 3“. 4 3GPP TS 24.008: “
43、Mobile radio interface Layer 3 specification; Core network protocols; Stage 3“. 5 3GPP TS 24.301: “Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3“. 6 IEEE Std 802-2014: “IEEE Standard for Local and Metropolitan Area Networks: Overview and Architecture“, 30th June 2014. 7
44、3GPP TS 24.007: “Mobile radio interface signalling layer 3; General aspects“. 8 IETF RFC 768: “User Datagram Protocol“ 9 3GPP TS 33.402: “3GPP System Architecture Evolution (SAE); Security aspects of non-3GPP accesses“. 10 3GPP TS 24.161: “Network-Based IP Flow Mobility (NBIFOM); Stage 3“. 11 3GPP T
45、S 23.380: “IMS Restoration Procedures“. 12 3GPP TS 29.274: “Tunnelling Protocol for Control plane (GTPv2-C); Stage 3“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 1 and the following apply. A term defined
46、 in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 1. ETSI ETSI TS 124 244 V14.0.0 (2017-05)83GPP TS 24.244 version 14.0.0 Release 14PDN connection for emergency bearer services: A PDN connection which was activated with request type “emergency“
47、 or “handover of emergency bearer services“. 3.2 Abbreviations For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 1 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP
48、 TR 21.905 1. APN Access Point Name DTLS Datagram Transport Layer Security EAP Extensible Authentication ProtocolEPC Evolved Packet Core Network ID Identifier IE Information Element IEI Information Element Identifier LSB Least Significant Bit MAC Media Access Control MSB Most Significant Bit NBIFOM
49、Network-based IP flow mobility PCO Protocol Configuration Options PDN Packet Data Network PDN GW Packet Data Network Gateway PTI Procedure Transaction Identity TWAG Trusted WLAN Access Gateway UE User EquipmentWLAN Wireless Local Area Network WLCP Wireless LAN control plane protocol 4 General 4.1 Overview WLCP is used between user equipment (UE) and trusted wLAN access gateway (TWAG) for multi-connection mode as specified in 3GPP TS 23.402 2. The WLCP comprises procedures for: - establishment of PDN connections including initial request and
