ITU-T Q 3301 1-2013 Resource control protocol No 1 version 3 C Protocol at the Rs interface between service control entities and the policy decision physical entity (Study Group 11.pdf

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1、 International Telecommunication Union ITU-T Q.3301.1TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (08/2013) SERIES Q: SWITCHING AND SIGNALLING Signalling requirements and protocols for the NGN Resource control protocols Resource control protocol No. 1, version 3 Protocol at the Rs interface betwe

2、en service control entities and the policy decision physical entity Recommendation ITU-T Q.3301.1 ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING Q.4Q.59 FUNCTIONS AND INFORMATION FLOWS F

3、OR SERVICES IN THE ISDN Q.60Q.99 CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS Q.100Q.119 SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4, 5, 6, R1 AND R2 Q.120Q.499 DIGITAL EXCHANGES Q.500Q.599 INTERWORKING OF SIGNALLING SYSTEMS Q.600Q.699 SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 Q.700Q.799 Q3 INTERFACE

4、 Q.800Q.849 DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 Q.850Q.999 PUBLIC LAND MOBILE NETWORK Q.1000Q.1099 INTERWORKING WITH SATELLITE MOBILE SYSTEMS Q.1100Q.1199 INTELLIGENT NETWORK Q.1200Q.1699 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Q.1700Q.1799 SPECIFICATIONS OF SIGNALLING RELATED TO B

5、EARER INDEPENDENT CALL CONTROL (BICC) Q.1900Q.1999 BROADBAND ISDN Q.2000Q.2999 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR THE NGN Q.3000Q.3999 General Q.3000Q.3029 Network signalling and control functional architecture Q.3030Q.3099 Network data organization within the NGN Q.3100Q.3129 Bearer control

6、signalling Q.3130Q.3179 Signalling and control requirements and protocols to support attachment in NGN environments Q.3200Q.3249 Resource control protocols Q.3300Q.3369Service and session control protocols Q.3400Q.3499 Service and session control protocols supplementary services Q.3600Q.3649 NGN app

7、lications Q.3700Q.3849 Testing for next generation networks Q.3900Q.3999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Q.3301.1 (08/2013) i Recommendation ITU-T Q.3301.1 Resource control protocol No. 1, version 3 Protocol at the Rs interface betweenservice contro

8、l entities and the policy decision physical entity Summary Recommendation ITU-T Q.3301.1 v3 (formerly Recommendation ITU-T Q.3321.1) specifies the rcp1 protocol, a protocol between service control entities (SCEs) in the services stratum and the policy decision physical entity (PD-PE) in the resource

9、 and admission control function block. This protocol can be used to request and commit transport resources, to retrieve address mapping information that can be used to modify application signalling, and to receive reports on transport resource usage for charging. It satisfies the requirements for in

10、formation flows across the Rs reference point as specified in clause 8.1 of Recommendation ITU-T Y.2111. Recommendation ITU-T Q.3301.1 v3 supersedes Recommendation ITU-T Q.3301.1 v2 (06/2010). History Edition Recommendation Approval Study Group 1.0 ITU-T Q.3301.1 2007-03-09 11 2.0 ITU-T Q.3321.1 201

11、0-06-13 11 2.0 ITU-T Q.3301.1 v2 2010-06-13 11 3.0 ITU-T Q.3301.1 v3 2013-08-13 11 ii Rec. ITU-T Q.3301.1 (08/2013) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs).

12、 The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Sta

13、ndardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of informati

14、on technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency.

15、Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some oth

16、er obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or imple

17、mentation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process

18、. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly u

19、rged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2014 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T Q.3301.1 (08/2013) iii Table of Contents Page 1 Scope 1 2 References.

20、 1 3 Definitions 3 4 Abbreviations and acronyms 3 5 Rs interface . 5 5.1 Overview 5 5.2 Rs reference model . 5 5.3 Functional elements and capabilities 5 6 SCE session-specific procedures 6 6.1 Procedures at the PD-PE 6 6.2 Procedures at the SCE 8 6.3 IMS-related SCE procedures 11 7 Protocol specifi

21、cation . 12 8 Use of the Diameter base protocol 13 8.1 Securing Diameter messages 13 8.2 Accounting functionality 13 8.3 Use of sessions . 13 8.4 Transport protocol 13 8.5 Routing considerations . 13 8.6 Advertising application support . 14 9 Message specification . 14 9.1 Commands 14 9.2 Experiment

22、al-Result-Code AVP values . 22 9.3 AVPs . 23 9.4 Use of namespaces . 38 10 Security considerations . 39 Annex A Support for SIP forking . 41 A.1 Support for SIP forking 41 Annex B QoS parameter mapping for SDP 42 B.1 SDP to service information mapping in SCE . 42 Annex C Derivation of flow numbers .

23、 47 C.1 Purpose and scope 47 C.2 Conceptual framework . 47 C.3 Examples 48 Annex D Support for ETS . 53 D.1 Handling of ETS session 53 Appendix I Mapping of Rs information components . 54 iv Rec. ITU-T Q.3301.1 (08/2013) Page Appendix II ITU-T registry for ITU-T defined Diameter attribute-value pair

24、s . 57 Bibliography. 58 Rec. ITU-T Q.3301.1 (08/2013) 1 Recommendation ITU-T Q.3301.1 Resource control protocol No. 1, version 3 Protocol at the interface between service control entities and the policy decision physical entity 1 Scope This Recommendation provides the stage 3 specification of the pr

25、otocol at the interface between service control entities (SCEs) and the policy decision physical entity (PD-PE). The functional requirements and the stage 2 specifications for this interface are contained in clause 8.1 of ITU-T Y.2111 and in b-ITU-T Q-Sup.51. This interface is used to control sessio

26、n-based policy. Using the protocol specified in this Recommendation, the SCE can: provide information to the PD-PE to identify media flows and their required QoS resource characteristics (e.g., QoS class, bandwidth, priority); provide priority information to the PD-PE to facilitate appropriate prior

27、ity handling (e.g., emergency telecommunications service (ETS) priority information); request resource usage information through the PD-PE for charging; provide related service information to the PD-PE to facilitate appropriate dynamic firewall working mode selection; indicate whether the media shou

28、ld be enabled (i.e., gate opened) when resources are reserved; in those instances where the media should not be enabled as soon as the resources are reserved, i.e., may request that the gate be opened later; in the case where a NAPT function is required, request address mapping information so it can

29、 do any modifications that may be required to address information within application signalling (e.g., SDP); and in the case where a path-coupled resource reservation mechanism is used, indicate to the PD-PE whether it wishes to be notified when reservations are obtained and released. When an author

30、ization token mechanism is used, the PD-PE may supply the SCE with one or more authorization tokens which the SCE shall include in application signalling to the CPE. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, consti

31、tute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Rec

32、ommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T Y.2111 Recommendation ITU-T Y.2111 (20

33、11), Resource and admission control functions in next generation networks. ETSI TS 129 209 ETSI TS 129 209 V6.4.0 (2005), Universal Mobile Telecommunications System (UMTS); Policy control over Gq interface (3GPP TS 29.209 version 6.4.0 Release 6). 2 Rec. ITU-T Q.3301.1 (08/2013) ETSI TS 129 214 ETSI

34、 TS 129 214 V10.9.0 (2013), Universal Mobile Telecommunications System (UMTS);LTE; Policy and charging control over Rx reference point (3GPP TS 29.214 version 10.9.0 Release 10). ETSI TS 129 329 ETSI TS 129 329 V6.7.0 (2006), Digital cellular telecommunications system (Phase 2+); Universal Mobile Te

35、lecommunications System (UMTS); Sh interface based on the Diameter protocol; Protocol details (3GPP TS 29.329 version 6.7.0 Release 6). ETSI TS 133 210 ETSI TS 133 210 V6.6.0 (2006), Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); 3G security

36、; Network Domain Security (NDS); IP network layer security (3GPP TS 33.210 version 6.6.0 Release 6). ETSI TS 183 017 ETSI TS 183 017 V3.2.1 (2010), Telecommunications and Internet Converged Services and Protocols for Advanced Networking (TISPAN); Resource and Admission Control: DIAMETER protocol for

37、 session-based policy set-up information exchange between the Application Function (AF) and the Service Policy Decision Function (SPDF); Protocol Specification. ETSI ES 283 026 ETSI ES 283 026 V1.1.1 (2006), Telecommunications and Internet converged Services and Protocols for Advanced Networking (TI

38、SPAN); Resource and Admission Control; Protocol for QoS reservation information exchange between the Service Policy Decision Function (SPDF) and the Access-Resource and Admission Control Function (A-RACF) in the Resource and Protocol specification. ETSI ES 283 034 ETSI ES 283 034 V1.1.1 (2006), Tele

39、communications and Internet Converged Services and Protocols for Advanced Networking (TISPAN); Network Attachment Sub-System (NASS); e4 interface based on the DIAMETER protocol. IETF RFC 3261 IETF RFC 3261 (2002), SIP: Session Initiation Protocol. IETF RFC 3264 IETF RFC 3264 (2002), An Offer/Answer

40、Model with Session Description Protocol (SDP). IETF RFC 3520 IETF RFC 3520 (2003), Session Authorization Policy Element. IETF RFC 3524 IETF RFC 3524 (2003), Mapping of Media Streams to Resource Reservation Flows. IETF RFC 3550 IETF RFC 3550 (2003), RTP: A Transport Protocol for Real-Time Application

41、s. IETF RFC 3556 IETF RFC 3556 (2003), Session Description Protocol (SDP) Bandwidth Modifiers for RTP Control Protocol (RTCP) Bandwidth. IETF RFC 4005 IETF RFC 4005 (2005), Diameter Network Access Server Application. IETF RFC 4412 IETF RFC 4412 (2006), Communications Resource Priority for the Sessio

42、n Initiation Protocol (SIP). IETF RFC 4566 IETF RFC 4566 (2006), SDP: Session Description Protocol. IETF RFC 4960 IETF RFC 4960 (2007), Stream Control Transmission Protocol. Rec. ITU-T Q.3301.1 (08/2013) 3 IETF RFC 5888 IETF RFC 5888 (2002), Grouping of Media Lines in the Session Description Protoco

43、l (SDP). IETF RFC 6733 IETF RFC 6733 (2012), Diameter Base Protocol. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following term defined elsewhere: None. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 attribute-value pair (AV

44、P) (see IETF RFC 6733): An attribute-value pair corresponds to an Information Element in a Diameter message. 3.2.2 downlink: In the direction from the network toward a specified instance of user equipment. 3.2.3 hard-state reservation: A type of reservation whereby the requested resources are reserv

45、ed without time-limit. NOTE In stateful operation, hard-state reservations are terminated when the DIAMETER session is terminated. In stateless operation, hard-state reservations are terminated by explicit request. 3.2.4 IP flow: An IP flow is a unidirectional flow of data packets between specified

46、transport end points (ports), sharing a common description in terms of the service requirements specified by the SCE. NOTE An IP flow will often have a counterpart flow in the opposite direction. In this Recommendation, the description of service requirements for an IP flow and its counterpart, if a

47、ny, is mapped to a Media-Sub-Component AVP (see clause 9.3.28). 3.2.5 SCE session: A session established by a service/session control signalling protocol offered by the SCE that requires a session set-up with explicit session description before the use of the service. NOTE One example of a SCE sessi

48、on is an IMS session. 3.2.6 SCE session signalling protocol: The signalling protocol used to control the SCE session. NOTE One example of an SCE session signalling protocol is SIP with SDP. 3.2.7 soft-state reservation: A type of reservation whereby the requested resources are reserved for a finite

49、amount of time. In stateful operation, soft-state reservations are terminated if the DIAMETER session is terminated. 3.2.8 uplink: In the direction from a specified instance of user equipment toward the network. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations: AAA AA-Answer AAR AA-Request ASA Abort-Session-Answer ASR Abort-Session-Request AVP Attribute-Value Pair CEA Capabilities-Exchange-Answer 4 Rec. ITU-T Q.3301.1