ETSI TS 123 161-2018 Universal Mobile Telecommunications System (UMTS) LTE Network-Based IP Flow Mobility (NBIFOM) Stage 2 (V15 0 0 3GPP TS 23 161 version 15 0 0 Release 15).pdf

1、 ETSI TS 123 161 V15.0.0 (2018-06) Universal Mobile Telecommunications System (UMTS); LTE; Network-Based IP Flow Mobility (NBIFOM); Stage 2 (3GPP TS 23.161 version 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 123 161 V15.0.0 (2018-06)13GPP TS 23.161 version 15.0.0 Release 15Reference RTS/

2、TSGS-0223161vf00 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 Important notice The present

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14、cifications or reports using their 3GPP identities, UMTS identities or GSM identities. 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. M

15、odal verbs terminology In the present document “shall“, “shall not“, “should“, “should 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“ ar

16、e NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 123 161 V15.0.0 (2018-06)33GPP TS 23.161 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g31 Scope 6g32 References 6g33 Definitions and abbrevia

17、tions . 6g33.1 Definitions 6g33.2 Abbreviations . 7g34 Architecture model and concepts . 7g34.1 General concepts 7g34.2 Architecture reference model . 8g35 NBIFOM High level functions . 8g35.1 NBIFOM capability discovery/negotiation and change detection 8g35.2 Routing rules 9g35.3 Delivery of routin

18、g rules and IP Flow mapping . 10g35.4 NBIFOM Modes of Operations 11g35.4.1 General 11g35.4.2 UE-initiated NBIFOM Mode 11g35.4.3 Network-initiated NBIFOM mode 11g35.4.4 Mode Selection . 12g35.5 PCC Interactions 13g35.6 Addition of one access to a Multi-access PDN connection 14g35.7 IP flow mobility w

19、ithin a Multi-access PDN connection . 15g35.8 Removal of an access from a PDN connection 15g35.8a Network-initiated release of NBIFOM PDN connection . 15g35.9 Void 15g35.10 Functional entities 15g35.10.1 UE . 15g35.10.2 PDN GW . 16g35.10.3 MME . 16g35.10.4 S-GW 16g35.10.5 ePDG 16g35.10.6 TWAN 17g35.

20、10.7 SGSN 17g35.10.8 PCRF 17g36 NBIFOM Signalling Flows 18g36.1 Initial PDN connection establishment over first access 18g36.1.1 Initial PDN connection establishment over 3GPP access . 18g36.1.2 PDN connection establishment over S2a 19g36.1.2.1 Single-connection mode 19g36.1.2.2 Multi-connection mod

21、e . 20g36.1.3 PDN connection establishment over S2b 20g36.2 Addition of one access to a PDN connection . 21g36.2.1 General 21g36.2.2 Addition of a 3GPP access 21g36.2.3 Addition of an access using S2a . 23g36.2.3.1 Single-connection mode 23g36.2.3.2 Multi-connection mode . 24g36.2.4 Addition of an a

22、ccess using S2b . 25g36.2.4.1 Addition of Untrusted WLAN access . 25g36.3 IP flow mobility within a PDN connection 28g36.3.1 General 28g3ETSI ETSI TS 123 161 V15.0.0 (2018-06)43GPP TS 23.161 version 15.0.0 Release 156.3.2 Network-initiated IP flow mobility . 28g36.3.2.1 Routing Rules signalled via 3

23、GPP access . 28g36.3.2.2 Routing Rules signalled via Trusted WLAN access . 30g36.3.2.2.1 Single-connection mode 30g36.3.2.2.2 Multi-connection mode . 30g36.3.2.3 Routing Rules signalled via Untrusted WLAN access 31g36.3.3 UE-initiated IP flow mobility . 33g36.3.3.1 Routing Rules signalled via 3GPP a

24、ccess . 33g36.3.3.2 Routing Rules signalled via Trusted WLAN access . 34g36.3.3.2.1 Single-connection mode 34g36.3.3.2.2 Multi-connection mode . 34g36.3.3.3 Routing Rules signalled via Untrusted WLAN access 36g36.4 NBIFOM IP Flow Mapping . 37g36.4.1 UE Requested IP Flow Mapping via 3GPP access . 37g

25、36.4.2 UE Requested IP Flow Mapping via Trusted WLAN access . 38g36.4.2.1 Single-connection mode 38g36.4.2.2 Multi-connection mode . 38g36.4.3 UE Requested IP Flow Mapping via Untrusted WLAN access 39g36.5 Removal of an access from a PDN connection 40g36.5.1 Removal of 3GPP access 40g36.5.1.1 UE-ini

26、tiated removal of 3GPP access from the PDN connection . 40g36.5.1.2 Network-initiated removal of 3GPP access from the PDN connection . 42g36.5.2 Removal of Trusted WLAN access 44g36.5.2.1 UE-initiated removal of Trusted WLAN access from a PDN connection 44g36.5.2.2 Network-initiated removal of Trust

27、ed WLAN access from a PDN connection 47g36.5.3 Removal of Untrusted WLAN access . 48g36.5.3.1 UE-initiated removal of Untrusted WLAN access from the PDN connection 48g36.5.3.2 Network-initiated removal of Untrusted WLAN access from a PDN Connection 49g36.6 Access becomes Unusable and Usable . 50g36.

28、6.1 An access of a PDN connection becomes unusable 50g36.6.1.1 3GPP access of the PDN connection becomes unusable in Trusted WLAN access . 50g36.6.1.2 3GPP access of the PDN connection becomes unusable in Untrusted WLAN access 51g36.6.1.3 Trusted WLAN access becomes unusable 52g36.6.1.4 Untrusted WL

29、AN access becomes unusable . 53g36.6.2 An access of a PDN connection becomes usable 54g36.6.2.1 3GPP access for the PDN connection becomes usable . 54g36.6.2.2 Trusted WLAN access for the PDN connection becomes usable . 55g36.6.2.2.1 Single-connection mode 55g36.6.2.2.2 Multi-connection mode . 56g36

30、.6.2.3 Untrusted WLAN access for the PDN connection becomes usable 57g36.7 IP flow mobility triggered by RAN WLAN interworking . 58g36.7.1 IP flow mobility triggered by Access Stratum indication move-to-WLAN in Trusted WLAN access 58g36.7.1.0 General 58g36.7.1.1 Single-connection mode 59g36.7.1.2 Mu

31、lti-connection mode . 61g36.7.2 IP flow mobility triggered by Access Stratum indication move-to-WLAN in Untrusted WLAN access 61g36.7.3 IP flow mobility triggered by indication move-from-WLAN . 62g36.8 Network-initiated release of NBIFOM PDN connection . 64g36.8.1 General 64g36.8.2 PDN GW initiated

32、procedures 65g36.8.2.1 PDN GW initiated bearer deactivation procedure . 65g36.8.2.2 PDN GW initiated Resource Allocation Deactivation with GTP on S2b procedure . 65g36.8.2.3 PDN GW initiated Resource Allocation Deactivation in WLAN on GTP S2a procedure 65g36.8.2.4 PDN GW initiated Bearer Deactivatio

33、n Procedure using S4 66g3Annex A (informative): Change history . 67g3History 68g3ETSI ETSI TS 123 161 V15.0.0 (2018-06)53GPP TS 23.161 version 15.0.0 Release 15Foreword This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP). The contents of the present docume

34、nt 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 change of release date and an increase in version number as follows: Version x.y.z where: x

35、 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 substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incre

36、mented when editorial only changes have been incorporated in the document. ETSI ETSI TS 123 161 V15.0.0 (2018-06)63GPP TS 23.161 version 15.0.0 Release 151 Scope The scope of this document is to specify the support of NBIFOM (Network based IP Flow Mobility) i.e. IP flow mobility based on network mob

37、ility protocols. This feature supports PDN connections that are simultaneously connected over 3GPP access (i.e. S5/S8 connection to a PDN GW) and a WLAN access (i.e. S2a or S2b connection to the same PDN GW). 2 References The following documents contain provisions which, through reference in this te

38、xt, constitute provisions of the present document. - References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. - For a specific reference, subsequent revisions do not apply. - For a non-specific reference, the latest version applies. In

39、 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 document in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 23.402: “Architecture enhancements

40、for non-3GPP accesses“. 3 3GPP TS 23.203: “Policy and Charging Control Architecture“. 4 3GPP TS 23.401: “General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network(E-UTRAN) access“. 5 3GPP TS 23.060: “General Packet Radio Service (GPRS); Service descripti

41、on; Stage 2“. 6 3GPP TS 33.402: “3GPP System Architecture Evolution (SAE); Security aspects of non-3GPP accesses“. 7 3GPP TS 23.261: “IP flow mobility and seamless Wireless Local Area Network (WLAN) offload; Stage 2“. 8 3GPP TS 23.380: “IMS Restoration Procedures“. 3 Definitions and abbreviations 3.

42、1 Definitions For the purposes of the present document, the terms and definitions given in TR 21.905 1 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 1. Routing filter: A set of packet flow IP header paramet

43、er values/ranges used to identify IP flows for routing purposes. Routing access type: Type of access network (e.g. 3GPP or WLAN) over which to route a set of IP flows of a PDN connection. Routing Rule (RR): A set of information enabling the association of a routing filter with a routing access type.

44、 NBIFOM: IP Flow Mobility based on network mobility protocols (GTP or PMIP). UE-initiated NBIFOM: IP Flow Mobility based on network mobility protocols (GTP and PMIP) where the UE initiates the IP flow mobility. Network-initiated NBIFOM: IP Flow Mobility based on network mobility protocols (GTP and P

45、MIP) where the network initiates the IP flow mobility. ETSI ETSI TS 123 161 V15.0.0 (2018-06)73GPP TS 23.161 version 15.0.0 Release 15Multi-access PDN connection: A PDN connection whose traffic can be routed over either a 3GPP access or a WLAN access or both. Each IP flow is routed at any single tim

46、e only over one access. 3.2 Abbreviations For the purposes of the present document, the abbreviations given in 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 TR 21.905 1. MCM Multi-connect

47、ion mode (as defined in TS 23.402 2 clause 16) NBIFOM Network-based IP flow mobility RCLWI RAN Controlled WLAN Interworking RR Routing Rule SCM Single-connection mode (as defined in TS 23.402 2 clause 16) TSCM Transparent Single-connection mode (as defined in TS 23.402 2 clause 16) 4 Architecture mo

48、del and concepts 4.1 General concepts A PDN connection supporting NBIFOM provides simultaneous access to a single PDN via different access networks: a 3GPP access network and a WLAN access network. It is used by multi-radio (i.e. 3GPP and WLAN) capable UEs that are able to simultaneously connect to

49、a given PDN via different access systems (3GPP and WLAN). In order to enable NBIFOM, the UE can establish and maintain a PDN connection over both 3GPP access and WLAN access simultaneously. This is supported for both S2b and S2a connectivity. The UE can add an access to a PDN connection even if traffic is not immediately routed over the added access. When a PDN connection is established over both 3GPP access and WLAN access simultaneously there is one default bearer for each access. On a PDN connection established over both 3GPP access and WLAN ac