1、 ETSI TS 1Universal Mobile TelNetwork-Base(3GPP TS 23.1TECHNICAL SPECIFICATION123 161 V13.5.0 (2017elecommunications System (LTE; sed IP Flow Mobility (NBIFOM)Stage 2 .161 version 13.5.0 Release 1317-01) (UMTS); M); 13) ETSI ETSI TS 123 161 V13.5.0 (2017-01)13GPP TS 23.161 version 13.5.0 Release 13R
2、eference RTS/TSGS-0223161vd50 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
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8、 for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 123 161 V13.5.0 (2017-01)23GPP TS 23.161 version 1
9、3.5.0 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 available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intel
10、lectual 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:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, inclu
11、ding 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 to the present document. Foreword This Technical Specification (TS) ha
12、s 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 as being references to the corresponding ETSI deliverables. The cross r
13、eference 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“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described
14、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 123 161 V13.5.0 (2017-01)33GPP TS 23.161 version 13.5.0 Release 13Contents Intellectual Property Righ
15、ts 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g31 Scope 6g32 References 6g33 Definitions and abbreviations . 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 .
16、9g35.1 NBIFOM capability discovery/negotiation and change detection 9g35.2 Routing rules 9g35.3 Delivery of routing 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 . 1
17、2g35.5 PCC Interactions 14g35.6 Addition of one access to a Multi-access PDN connection 14g35.7 IP flow mobility within 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 16g35.10 Functional en
18、tities 16g35.10.1 UE . 16g35.10.2 PDN GW . 16g35.10.3 MME . 16g35.10.4 S-GW 17g35.10.5 ePDG 17g35.10.6 TWAN 17g35.10.7 SGSN 17g35.10.8 PCRF 18g36 NBIFOM Signalling Flows 18g36.1 Initial PDN connection establishment over first access 18g36.1.1 Initial PDN connection establishment over 3GPP access . 1
19、8g36.1.2 PDN connection establishment over S2a 19g36.1.2.1 Single-connection mode 19g36.1.2.2 Multi-connection mode . 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 ac
20、cess using S2a . 23g36.2.3.1 Single-connection mode 23g36.2.3.2 Multi-connection mode . 24g36.2.4 Addition of an access using S2b . 25g36.2.4.1 Addition of Untrusted WLAN access . 25g3ETSI ETSI TS 123 161 V13.5.0 (2017-01)43GPP TS 23.161 version 13.5.0 Release 136.3 IP flow mobility within a PDN con
21、nection 28g36.3.1 General 28g36.3.2 Network-initiated IP flow mobility . 28g36.3.2.1 Routing Rules signalled via 3GPP 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
22、via Untrusted WLAN access 32g36.3.3 UE-initiated IP flow mobility . 33g36.3.3.1 Routing Rules signalled via 3GPP access . 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 U
23、ntrusted WLAN access 36g36.4 NBIFOM IP Flow Mapping . 37g36.4.1 UE Requested IP Flow Mapping via 3GPP access . 37g36.4.2 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
24、WLAN access 39g36.5 Removal of an access from a PDN connection 40g36.5.1 Removal of 3GPP access 40g36.5.1.1 UE-initiated 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.
25、1 UE-initiated removal of Trusted WLAN access from a PDN connection 44g36.5.2.2 Network-initiated removal of Trusted 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-in
26、itiated removal of Untrusted WLAN access from a PDN Connection 49g36.6 Access becomes Unusable and Usable . 50g36.6.1 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 b
27、ecomes unusable in Untrusted WLAN access 51g36.6.1.3 Trusted WLAN access becomes unusable 52g36.6.1.4 Untrusted WLAN 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 th
28、e PDN connection becomes usable . 55g36.6.2.2.1 Single-connection mode 55g36.6.2.2.2 Multi-connection mode . 56g36.6.2.3 Untrusted WLAN access for the PDN connection becomes usable 57g36.7 IP flow mobility triggered by RAN WLAN interworking . 59g36.7.1 IP flow mobility triggered by Access Stratum in
29、dication move-to-WLAN in Trusted WLAN access 59g36.7.1.0 General 59g36.7.1.1 Single-connection mode 59g36.7.1.2 Multi-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
30、-WLAN . 62g36.8 Network-initiated release of NBIFOM PDN connection . 64g36.8.1 General 64g36.8.2 PDN GW initiated 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 initi
31、ated Resource Allocation Deactivation in WLAN on GTP S2a procedure 65g36.8.2.4 PDN GW initiated Bearer Deactivation Procedure using S4 66g3Annex A (informative): Change history . 67g3History 68 ETSI ETSI TS 123 161 V13.5.0 (2017-01)53GPP TS 23.161 version 13.5.0 Release 13Foreword This Technical Spe
32、cification has been produced by the 3rd Generation 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 TS
33、G 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 incremented
34、 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 123 161 V13.5.0 (2017-01)63GPP TS 23.161 version 13.5.0 Release 131 Scope The scope of this documen
35、t is to specify the support of NBIFOM (Network based IP Flow Mobility) i.e. IP flow mobility based on network mobility 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
36、 to the same PDN GW). 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 number, etc.) or non-specific. - For a spec
37、ific 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 document in the same Release as the presen
38、t document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 23.402: “Architecture enhancements 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
39、 Radio Access Network(E-UTRAN) access“. 5 3GPP TS 23.060: “General Packet Radio Service (GPRS); Service description; 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 Net
40、work (WLAN) offload; Stage 2“. 8 3GPP TS 23.380: “IMS Restoration Procedures“. 3 Definitions and abbreviations 3.1 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 ove
41、r the definition of the same term, if any, in TR 21.905 1. Routing filter: A set of packet flow IP header parameter 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.
42、 Routing Rule (RR): A set of information enabling the association of a routing filter with a routing access type. 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 initiate
43、s the IP flow mobility. ETSI ETSI TS 123 161 V13.5.0 (2017-01)73GPP TS 23.161 version 13.5.0 Release 13Network-initiated NBIFOM: IP Flow Mobility based on network mobility protocols (GTP and PMIP) where the network initiates the IP flow mobility. Multi-access PDN connection: A PDN connection whose t
44、raffic can be routed over either a 3GPP access or a WLAN access or both. Each IP flow is routed at any single time 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
45、document takes precedence over the definition of the same abbreviation, if any, in TR 21.905 1. MCM Multi-connection 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
46、.402 2 clause 16) TSCM Transparent Single-connection mode (as defined in TS 23.402 2 clause 16) 4 Architecture model 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 acces
47、s network. It is used by multi-radio (i.e. 3GPP and WLAN) capable UEs that are able to simultaneously connect to 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 simultaneousl
48、y. 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.
49、 On a PDN connection established over both 3GPP access and WLAN access, it is possible to move individual IP flows from one access network to another, when policies determine that flows should be moved and the target access is available for the UE. The PDN GW performs IP flow routing of downlink traffic. The UE performs IP flow routing of uplink traffic. A mechanism is defined for the UE and the network to discover whether the network and the UE respectively support NBIFOM and to decide whether NBIFOM will be applied for a given PDN connection. T
