1、 ETSI TS 129 217 V15.0.0 (2018-07) Universal Mobile Telecommunications System (UMTS); LTE; Policy and Charging Control (PCC); Congestion reporting over Np reference point (3GPP TS 29.217 version 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 129 217 V15.0.0 (2018-07)13GPP TS 29.217 version
2、15.0.0 Release 15Reference RTS/TSGC-0329217vf00 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 7803/8
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9、-07)23GPP TS 29.217 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-mem
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13、me. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present docu
14、ment 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 reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webap
15、p.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 in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provis
16、ions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 129 217 V15.0.0 (2018-07)33GPP TS 29.217 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g31 Scope 6g32 Reference
17、s 6g33 Definitions and abbreviations . 7g33.1 Definitions 7g33.2 Abbreviations . 7g34 Np reference point 7g34.1 Overview 7g34.2 Np reference model 8g34.3 Functional elements 8g34.3.1 RCAF 8g34.3.2 PCRF 9g34.3.3 H-PCRF 9g34.3.4 V-PCRF 9g34.4 Procedures over Np reference point . 9g34.4.1 RUCI Report .
18、 9g34.4.1.1 General 9g34.4.1.2 Non-aggregated RUCI report 10g34.4.1.3 Aggregated RUCI report . 10g34.4.2 Reporting Restriction Provisioning . 10g34.4.3 UE mobility between RCAFs . 11g34.4.4 Removal of UE context . 11g34.4.5 Race condition handling . 12g35 Np protocol . 12g35.1 Protocol support . 12g
19、35.2 Initialization, maintenance and termination of connection and session 12g35.3 Np specific AVPs . 12g35.3.1 General 12g35.3.2 Aggregated-Congestion-Info AVP . 13g35.3.3 Aggregated-RUCI-Report AVP 13g35.3.4 Congestion-Level-Definition AVP . 14g35.3.5 Congestion-Level-Range AVP . 14g35.3.6 Congest
20、ion-Level-Set-Id AVP 14g35.3.7 Congestion-Level-Value AVP 14g35.3.8 Congestion-Location-Id AVP . 14g35.3.9 Conditional-Restriction AVP 15g35.3.10 eNodeB-Id AVP 15g35.3.11 IMSI-List AVP . 15g35.3.12 RCAF-Id AVP 16g35.3.13 Reporting-Restriction AVP . 16g35.3.14 RUCI-Action AVP 16g35.3.15 Extended-eNod
21、eB-Id AVP . 17g35.4 Np re-used AVPs 17g35.4.1 General 17g35.4.2 Use of the Supported-Features AVP on the Np reference point . 18g35.5 Np specific Experimental-Result-Code AVP values 18g35.5.1 General 18g35.5.2 Success 18g35.5.3 Permanent Failures . 18g35.5.4 Transient Failures . 18g35.6 Np messages
22、. 19g3ETSI ETSI TS 129 217 V15.0.0 (2018-07)43GPP TS 29.217 version 15.0.0 Release 155.6.0 Command-Code Values 19g35.6.1 Non-Aggregated-RUCI-Report-Request (NRR) command 19g35.6.2 Non-Aggregated-RUCI-Report-Answer (NRA) command 20g35.6.3 Aggregated-RUCI-Report-Request (ARR) command 20g35.6.4 Aggrega
23、ted-RUCI-Report-Answer (ARA) command 20g35.6.5 Modify-Uecontext-Request (MUR) command . 21g35.6.6 Modify-Uecontext-Answer (MUA) command . 21g3Annex A (informative): Change history . 22g3History 23g3ETSI ETSI TS 129 217 V15.0.0 (2018-07)53GPP TS 29.217 version 15.0.0 Release 15Foreword This Technical
24、 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 the
25、 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 incremen
26、ted 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 129 217 V15.0.0 (2018-07)63GPP TS 29.217 version 15.0.0 Release 151 Scope The present document p
27、rovides the stage 3 specification of the Np reference point. The functional requirements and the stage 2 specifications of the Np reference point are contained in 3GPP TS 23.203 2. The Np reference point lies between the RAN Congestion Awareness Function (RCAF) and the Policy and Charging Rules Func
28、tion (PCRF) for the non-roaming case, between the RCAF and the H-PCRF for the home-routed scenario and between the RCAF and the V-PCRF for the visited access scenario. NOTE: If not specified explicitly, the PCRF also means H-PCRF for the home-routed scenario or V-PCRF in the visited access scenario
29、in the specification. 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
30、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
31、t document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 23.203: “Policy and charging control architecture“. 3 3GPP TS 29.213: “Policy and Charging Control signalling flows and QoS parameter mapping“. 4 IETF RFC 4005: “Diameter Network Access Server Application“. 5 IETF RFC 4006
32、: “Diameter Credit Control Application“. 6 3GPP TS 29.229: “Cx and Dx interfaces based on Diameter protocol; Protocol details“. 7 IETF RFC 3588: “Diameter Base Protocol“. 8 3GPP TS 23.401: “GPRS enhancements for E-UTRAN access“. 9 3GPP TS 23.060: “General Packet Radio Service (GPRS); Service descrip
33、tion; Stage 2“. 10 3GPP TS 29.215: “Policy and Charging Control (PCC) over S9 reference point; Stage 3“. 11 3GPP TS 29.061: “Interworking between the Public Land Mobile Network (PLMN) supporting packet based services and Packet Data Networks (PDN)“. 12 3GPP TS 29.274: “3GPP Evolved Packet System. Ev
34、olved GPRS Tunnelling Protocol for EPS (GTPv2)“. 13 ITU-T Recommendation E.212: “The international identification plan for mobile terminals and mobile users“. 14 3GPP TS 29.212: “Policy and Charging Control (PCC); Reference points“. 15 IETF RFC 7683: “Diameter Overload Indication Conveyance“. 16 IET
35、F RFC 7944: “Diameter Routing Message Priority“. 17 IETF draft-ietf-dime-load-09: “Diameter Load Information Conveyance“. Editors note: The above document cannot be formally referenced until it is published as an RFC. 18 IETF RFC 6733: “Diameter Base Protocol“. ETSI ETSI TS 129 217 V15.0.0 (2018-07)
36、73GPP TS 29.217 version 15.0.0 Release 1519 IETF RFC 5719: “Updated IANA Considerations for Diameter Command Code Allocations“. 20 IETF RFC 2234: “Augmented BNF for syntax specifications“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definit
37、ions given in 3GPP 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 3GPP TR 21.905 1. Home Routed Access: Roaming scenario where the PCEF is located in the HPLMN. In a Home Routed roaming scenario, the UE ob
38、tains access to the packet data network from the HPLMN. RAN user plane congestion: RAN user plane congestion occurs when the demand for RAN resources exceeds the available RAN capacity to deliver the user data for a prolonged period of time. NOTE: Short-duration traffic bursts is a normal condition
39、at any traffic load level, and is not considered to be RAN user plane congestion. Likewise, a high-level of utilization of RAN resources (based on operator configuration) is considered a normal mode of operation and might not be RAN user plane congestion. Visited Access (also known as local breakout
40、): Roaming scenario where the PCEF is located in the VPLMN. In a Visited Access Roaming scenario, the UE obtains access to the packet data network from the VPLMN. 3.2 Abbreviations For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 1 and the following apply. An abbre
41、viation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 1. AF Application Function ARR Aggregated RUCI Report Request ARA Aggregated RUCI Report Answer DRMP Diameter Routing Message Priority H-PCRF Home PCRF MUR Modify Uecontex
42、t Request MUA Modify Uecontext Answer NRR Non-Aggregated RUCI Report Request NRA Non-Aggregated RUCI Report Answer PCC Policy and Charging Control PCRF Policy and Charging Rule Function RCAF RAN Congestion Awareness Function RUCI RAN User Plane Congestion Information V-PCRF Visited PCRF 4 Np referen
43、ce point 4.1 Overview The Np reference point is located between the RCAF and the PCRF for the non-roaming scenario, between the RCAF and the H-PCRF for the home-routed scenario and between the RCAF and the V-PCRF for the visited access scenario. The Np reference point is used for: - Reporting the RU
44、CI from the RCAF to the PCRF; - Provisioning the Reporting Restriction from the PCRF to the RCAF; - The User Equipment (UE) mobility between RCAFs; ETSI ETSI TS 129 217 V15.0.0 (2018-07)83GPP TS 29.217 version 15.0.0 Release 15- The removal of the UE context in the RCAF. The stage 2 level requiremen
45、ts for the Np reference point are defined in 3GPP TS 23.203 2. Signalling flows related to Np interface are specified in 3GPP TS 29.213 3. Refer to Annex G of 3GPP TS 29.213 3 for Diameter overload control procedures over the Np interface. Refer to Annex J of 3GPP TS 29.213 3 for Diameter message pr
46、iority mechanism procedures over the Np interface. Refer to Annex K of 3GPP TS 29.213 3 for Diameter load control procedures over the Np interface. 4.2 Np reference model The relationships between the involved functional entities are depicted in figure 4.2.1. The overall PCC architecture is depicted
47、 in clause 3a of 3GPP TS 29.213 3 . PCRFg3Npg3RCAFg3Figure 4.2.1: Np reference model NOTE: For the home-routed access scenario, the RCAF interacts with the H-PCRF. For the visited access scenario, the RCAF interacts with the V-PCRF. Figure 4.2.2: Void Figure 4.2.3: Void 4.3 Functional elements 4.3.1
48、 RCAF The RCAF is a functional element which reports RAN User Plane Congestion Information (RUCI) via the Np interface to the PCRF to enable the PCRF to take the RAN user plane congestion status into account for policy decisions. RUCI includes the following information: - The user id (e.g. IMSI) ide
49、ntifying the UE impacted by congestion; - PDN ID for which congestion information is reported; - Congestion level information (either congestion level value or congestion level set id) of the UE impacted by congestion; - eNodeB identifier, ECGI or SAI identifying the eNodeB, E-UTRAN cell or Service Area respectively, serving the UE if a conditional restriction to restrict location reporting is not enabled. NOTE 1: In case of E-UTRAN, whether the eNodeB identifier or the ECGI are included in the RUCI is up to operat
