1、 ETSI TS 1Universal Mobile TelService capabover(3GPP TS 29.1TECHNICAL SPECIFICATION129 153 V13.1.0 (2016elecommunications System (LTE; ability exposure functionalityer Ns reference point .153 version 13.1.0 Release 1316-04) (UMTS); ity 13) ETSI ETSI TS 129 153 V13.1.0 (2016-04)13GPP TS 29.153 versio
2、n 13.1.0 Release 13Reference RTS/TSGC-0329153vd10 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
3、/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 print versions of the present document shall not be modified without the prior
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6、llowing services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PD
7、F version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2016. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI
8、registered 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 129 153 V13.1.0 (2016-04)23GPP TS 29.153
9、 version 13.1.0 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 3
10、14: “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:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigat
11、ion, 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 to the present document. Foreword This Technical Specificati
12、on (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 as being references to the corresponding ETSI deliverables. T
13、he 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“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as
14、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 129 153 V13.1.0 (2016-04)33GPP TS 29.153 version 13.1.0 Release 13Contents Intellectual Pro
15、perty Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 6g34 Architectural Overview 6g34.0 Overview 6g34.1 Reference Model 6g34.2 Functional elements 7g34.2.1 RCAF 7g34.2.2 SCEF. 7g3
16、4.3 Procedures over the Ns reference point 7g34.3.1 Network status reporting procedures 7g34.3.1.1 General 7g34.3.1.2 Request of one-time or continuous reporting of network status 7g34.3.1.3 Continuous reporting of network status 8g34.3.1.4 Cancellation of continuous reporting of network status 8g34
17、.3.2 RCAF selection . 9g35 Ns protocol . 9g35.1 Protocol support . 9g35.2 Initialization, maintenance and termination of connection and session 9g35.3 Ns specific AVPs . 9g35.3.1 General 9g35.3.2 Network-Congestion-Area-Report AVP . 10g35.3.3 Ns-Request-Type AVP . 10g35.4 Ns re-used AVPs 10g35.4.1 G
18、eneral 10g35.4.2 Use of the Supported-Features AVP on the Ns reference point 11g35.5 Ns specific Experimental-Result-Code AVP values 12g35.5.1 General 12g35.5.2 Success 12g35.5.3 Permanent Failures . 12g35.5.4 Transient Failures . 12g35.6 Ns messages . 12g35.6.1 Command-Code Values 12g35.6.2 Network
19、-Status-Request (NSR) command . 13g35.6.3 Network-Status-Answer (NSA) command . 13g35.6.4 Network-Status-Continuous-Report-Request (NCR) command . 13g35.6.5 Network-Status-Continuous-Report-Answer (NCA) command . 14g3Annex A (informative): Call Flows over Ns . 15g3A.1 Request of one time or continuo
20、us reporting of network status . 15g3A.2 Continuous reporting of network status . 15g3A.3 Cancellation of continuous reporting of network status . 16g3Annex B (informative): Change history . 17g3History 18g3ETSI ETSI TS 129 153 V13.1.0 (2016-04)43GPP TS 29.153 version 13.1.0 Release 13Foreword This
21、Technical 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-releas
22、ed by 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
23、 incremented 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 129 153 V13.1.0 (2016-04)53GPP TS 29.153 version 13.1.0 Release 131 Scope This document
24、 defines the protocol for Ns reference point between the Service Capability Exposure Function (SCEF) and RAN Congestion Awareness Function (RCAF). The Ns reference point and related stage 2 procedures are defined in 3GPP TS 23.682 2. 2 References The following documents contain provisions which, thr
25、ough 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 specific reference, subsequent revisions do not apply. - For a non-specific reference, the l
26、atest 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 present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 23.682: “A
27、rchitecture enhancements to facilitate communications with packet data networks and applications “. 3 IETF RFC 3588: “Diameter Base Protocol“. 4 3GPP TS 29.217: “Congestion reporting over Np reference point“. 5 IETF RFC 7683: “Diameter Overload Indication Conveyance“. 6 3GPP TS 29.229: “Cx and Dx in
28、terfaces based on Diameter protocol; Protocol details“. 7 3GPP TS 29.336: “Home Subscriber Server (HSS) diameter interfaces for interworking with packet data networks and applications Diameter Base Protocol“. 8 3GPP TS 29.154: “Service Capability Exposure Functionality over Nt reference point“. 9 3G
29、PP TS 29.274: “3GPP Evolved Packet System. Evolved GPRS Tunnelling Protocol for EPS (GTPv2)“. 10 IETF RFC 5719: “Updated IANA Considerations for Diameter Command Code Allocations“. 11 IETF RFC 2234: “Augmented BNF for syntax specifications“. 12 3GPP TS 29.213: “Policy and charging control signalling
30、 flows and Quality of Service (QoS) parameter mapping“. 13 IETF draft-ietf-dime-drmp-02: “Diameter Routing Message Priority“. Editors note: The above document cannot be formally referenced until it is published as an RFC. ETSI ETSI TS 129 153 V13.1.0 (2016-04)63GPP TS 29.153 version 13.1.0 Release 1
31、33 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 over the definition of the same term, if any, in TR 21.905 1. 3.2 Abbreviations F
32、or 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. AS Application Server DRMP Diameter Routing Message Priority
33、 NCA Network Status Continuous Report Answer NCR Network Status Continuous Report Request NSA Network Status Answer NSR Network Status RequestRCAF RAN Congestion Awareness Function SCEF Service Capability Exposure Function SCS Service Capability Server 4 Architectural Overview 4.0 Overview The Ns re
34、ference point is located between the RCAF and SCEF. The Ns reference point is used for network status reporting. The stage 2 level requirements for the Ns reference point are defined in 3GPP TS 23.682 2. Refer to Annex G of 3GPP TS 29.213 12 for Diameter overload control procedures over the Ns refer
35、ence point. Refer to Annex J of 3GPP TS 29.213 12 for Diameter message priority mechanism procedures over the Ns interface. 4.1 Reference Model The Ns reference point is defined between the RCAF and the SCEF to transfer the network status. The relationship between the two functional entities is depi
36、cted in figure 4.1.1. The complete 3GPP architecture for service capability exposure is defined in 3GPP TS 23.682 2. RCAF SCEF Ns Figure 4.1.1: Ns reference model ETSI ETSI TS 129 153 V13.1.0 (2016-04)73GPP TS 29.153 version 13.1.0 Release 134.2 Functional elements 4.2.1 RCAF The RCAF is a functiona
37、l element which reports network status to the SCEF to enable the SCEF to take the RAN user plane congestion status into account. The network status includes the following information; - Congestion level or an indication of the “no congestion“ state; - ECGI, or eNB-ID, or SAI for which the congestion
38、 level is being provided. 4.2.2 SCEF The SCEF is a functional element which provides a means to securely expose the services and capabilities provided by 3GPP network interfaces. Based on the geographical area provided by the SCS/AS and the configuration data, the SCEF determines from which RCAF(s)
39、to request congestion reporting. NOTE: The procedures in 3GPP TS 23.682 2, subclause 5.8, describe the interaction between the SCEF and SCS/AS and the information elements exchanged in the relevant steps of each procedure. When the SCEF receives the network status information from one or more RCAF(s
40、) in both the one-time or continuous reporting cases, it determines the Network Status Indication (NSI) of the geographical area based on the CongestionLevel-Value AVP in the Network-Congestion-Area-Report AVP it receives from the RCAF(s). The NSI value (e.g. High, Medium, Low, No-Congestion) is det
41、ermined per Service Provider policies. 4.3 Procedures over the Ns reference point 4.3.1 Network status reporting procedures 4.3.1.1 General This clause contains the detailed procedures for requesting one-time or continuous network status report, and network status report and the removal of the conti
42、nuous network status report. 4.3.1.2 Request of one-time or continuous reporting of network status This procedure shall be used by the SCEF to request one-time or continuous network status report. This procedure is mapped to Network-Status-Request /Answer commands specified in subclause 5.6. After t
43、he SCEF authorized a SCS/AS request for notification about the network status, the SCEF shall assign an SCEF Reference ID and identify the RCAF(s) responsible for requesting of the network status report. The identity of the RCAF is found by the SCEF based on the RCAF selection procedure defined in s
44、ubclause 4.3.2. If multiple RCAFs have been found, the procedure shall be invoked multiple times, for each RCAF responsible for the network status report. The SCEF shall send a Network-Status-Request (NSR) command to the targeted RCAF. The NSR shall include the Ns-Request-Type AVP with the value 0 (
45、initial request), the SCEF reference ID within SCEF-Reference-Id AVP and the location area in the Network-Area-Info-List AVP, the location area is either a 3GPP location area (e.g. list of TA/RAs, list of cell(s), list of eNBs etc) according to operator configuration or a 3GPP location area (e.g. li
46、st of TA/RAs, list of cell(s), list of eNBs etc) as provided by the SCS/AS. The SCEF may also include duration in the Monitoring-Duration AVP and the threshold value(s) in Congestion-Level-Range AVP if the SCS/AS requested reporting for specific threshold(s). The duration indicates the time for whic
47、h a continuous reporting is requested. The SCEF, based on operator policies, may choose a different threshold value than the one received from the SCS/AS. The SCEF shall not include the Congestion-Level-Range AVP in the request to the RCAF if no threshold was requested by the SCS/AS. ETSI ETSI TS 12
48、9 153 V13.1.0 (2016-04)83GPP TS 29.153 version 13.1.0 Release 13NOTE: The SCS/AS can be notified when the SCEF changes the threshold provided by the SCS/AS. Upon reception of a Network-Status-Request (NSR) command including the Ns-Request-Type AVP with the value 0 (initial request), the RCAF shall s
49、end the Network-Status-Answer (NSA) command to the SCEF including the SCEF-Reference-ID AVP and one or more congestion status(es) within Network-Congestion-Area-Report AVP(s). If the Monitoring-Duration AVP is present in the NSR, the RCAF shall store the SCEF instruction and start to monitor the location area for a change in the congestion status. When receiving NSA from the RCAF, the SCEF shall store the report if the SCS/AS request identified via the SCEF reference ID is valid and active. 4.3.1.3 Continuous reporting of networ
