ITU-T Q 3303 3-2013 Resource control protocol No 3 C Protocols at the Rw interface between a policy decision physical entity (PD-PE) and a policy enforcement physical entity (PE-PE《(预.pdf

1、 International Telecommunication Union ITU-T Q.3303.3TELECOMMUNICATION 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. 3 Protocols at the Rw interface between a polic

2、y decision physical entity (PD-PE) and a policy enforcement physical entity (PE-PE): Diameter profile version 3 Recommendation ITU-T Q.3303.3 ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKI

3、NG Q.4Q.59 FUNCTIONS AND INFORMATION FLOWS FOR 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 SIG

4、NALLING SYSTEM No. 7 Q.700Q.799 Q3 INTERFACE 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.17

5、99 SPECIFICATIONS OF SIGNALLING RELATED TO BEARER 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

6、 within the NGN Q.3100Q.3129 Bearer control 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

7、 supplementary services Q.3600Q.3649 NGN applications 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.3303.3 (08/2013) i Recommendation ITU-T Q.3303.3 Resource control protocol No. 3 Protocols at the

8、Rw interface between a policy decision physical entity (PD-PE) and a policy enforcement physical entity (PE-PE): Diameter profile version 3 Summary Recommendation ITU-T Q.3303.3 provides the stage 3 specification of the interface between policy decision physical entities (PD-PE) and the policy enfor

9、cement physical entity (PE-PE) using the Diameter protocol. The functional requirements and the stage 2 specification for this interface are defined in Recommendation ITU-T Y.2111. The Diameter profile version 3 specified in this document has additional attribute-value pairs to comply with the addit

10、ional requirements indicated in Recommendation ITU-T Y.2111 (2011) and support emergency telecommunication service (ETS) requirements. History Edition Recommendation Approval Study Group 1.0 ITU-T Q.3303.3 2008-05-22 11 2.0 ITU-T Q.3303.3 v2 2012-02-06 11 3.0 ITU-T Q.3303.3 v3 2013-08-13 11 Keywords

11、 AVP, diameter, RACF, Rw. ii Rec. ITU-T Q.3303.3 (08/2013) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T)

12、 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 Standardization Assembly (WTSA), which meets every four year

13、s, 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 information technology which fall within ITU-Ts purview, the neces

14、sary 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. Compliance with this Recommendation is voluntary. However

15、, 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 other obligatory language such as “must“ and the negative eq

16、uivalents 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 implementation of this Recommendation may involve the use of a

17、 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. As of the date of approval of this Recommendation, ITU

18、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 urged to consult the TSB patent database at http:/www.itu.

19、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.3303.3 (08/2013) iii Table of Contents Page 1 Scope 1 2 References. 1 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Term

20、s defined in this Recommendation . 2 4 Abbreviations and acronyms 3 5 Rw interface 5 5.1 Policy definition and operations . 5 6 Resource control procedures. 7 6.1 SCE-requested resource control procedures . 7 6.2 UE-requested resource control procedures . 15 6.3 Emergency telecommunications service

21、support . 18 7 Rw protocol specification . 19 7.1 Protocol support 19 7.2 Use of the Diameter base protocol . 19 7.3 AVPs . 20 7.4 Commands 46 7.5 State machine 50 Bibliography. 52 Rec. ITU-T Q.3303.3 (08/2013) 1 Recommendation ITU-T Q.3303.3 Resource control protocol No. 3 Protocols at the Rw inter

22、face between a policy decision physical entity (PD-PE) and a policy enforcement physical entity (PE-PE): Diameter profile version 3 1 Scope This Recommendation provides the stage 3 specification of the protocol at the interface between a policy decision physical entity (PD-PE) and a policy enforceme

23、nt physical entity (PE-PE). The functional requirements and the stage 2 specifications for this interface are contained in clause 9.2 of ITU-T Y.2111 and in b-ITU-T Q-Sup.51. This interface is used to control policy enforcement functions in the transport devices, including QoS resource control (e.g.

24、, packet marking, filtering and policing), gate control, and network address and port translation/network address translation (NAPT/NAT) traversal control. The PE-PE may reside in any injection node across access networks, core networks and the network border gateway. This Recommendation defines: Th

25、e information to be exchanged between the PD-PE and the PE-PE over the Rw interface. An Rw interface definition based on the Diameter protocol. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of thi

26、s 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 Recommendations and other

27、 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 Q.3301.1 v3 Recommendation ITU-T Q.3301.1 v3 (2013), Resourc

28、e control protocol No. 1, version 3 Protocol at the Rs interface between service control entities and the policy decision physical entity. ITU-T Y.2111 Recommendation ITU-T Y.2111 (2011), Resource and admission control functions in next generation networks. ETSI TR 121 905 ETSI TR 121 905 V10.3.0 (2

29、011), Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Vocabulary for 3GPP Specifications (3GPP TR 21.905 version 10.3.0 Release 10) IETF RFC 2474 IETF RFC 2474 (1998), Definition of the Differentiated Services Field (DS Field) in the IPv

30、4 and IPv6 Headers. IETF RFC 3520 IETF RFC 3520 (2003), Session Authorization Policy Element. IETF RFC 4005 IETF RFC 4005 (2005), Diameter Network Access Server Application. IETF RFC 4006 IETF RFC 4006 (2005), Diameter Credit-Control Application. IETF RFC 4960 IETF RFC 4960 (2007), Stream Control Tr

31、ansmission Protocol. 2 Rec. ITU-T Q.3303.3 (08/2013) 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: 3.1.1 attribute-value pair (AVP) IETF RFC 6733: An attribute-value pair correspond

32、s to an Information Element in a Diameter message. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 binding: The process of associating the resource request for IP media flows with pertinent resource control session and policy decisions according to the

33、 information received from the UE or the service control entity (SCE). NOTE The binding may be performed in the PE-PE and/or the PD-PE based on the resource control mode (i.e., push or pull modes). 3.2.2 hard-state reservation: A type of reservation whereby the requested resources are reserved witho

34、ut a time limit. 3.2.3 IP media flow: A unidirectional flow of IP packets pertaining to a certain media type with the same source IP address, source port number, destination IP address, destination port number and the same transport protocol. Port numbers are only applicable if used by the transport

35、 protocol. 3.2.4 policy configuration: A set of policy rules (conditions and actions) predefined by network operators, which does not vary from the individual resource request. 3.2.5 policy decision: A set of filters and parameters specific to the enforcement of resource control results on IP media

36、flow, which is produced on a per session basis upon receipt of the resource control request from the SCE or the PE-PE. 3.2.6 resource control policy: A set of rules concerning the conditions and actions of resource control operations. The rule-sets can be provisioned by the network operator manually

37、 or automatically. 3.2.7 resource control session: A session established by the PD-PE upon the trigger from a service/session control signalling protocol that requires a service layer session set-up with explicit session description before the use of the service; or by the PE-PE upon the trigger fro

38、m a transport signalling protocol that requires a transport layer session set-up with explicit session description before the use of the service. 3.2.8 resource information: A set of information collected from the transport networks to be used as a basis for resource admission decisions at the trans

39、port resource control physical entity (TRC-PE), including information about the network resource status (e.g., resource utilization, network topology and connectivity). NOTE The resource admission decisions are used as a basis for quality of service (QoS) resource requirements in the process of poli

40、cy decisions at the PD-PE. 3.2.9 service information: A set of information conveyed from the SCE to the PD-PE over the Rs interface to be used as a basis for the UE service-based resource requirements of in the process of policy decisions at the PD-PE, including information about the SCE session (e.

41、g., application identifier, type of media, bandwidth, IP address and port number). Rec. ITU-T Q.3303.3 (08/2013) 3 3.2.10 service signalling protocol: The signalling protocol used to control the service layer session. NOTE One example of a service signalling protocol is session initiation protocol (

42、SIP) with session description protocol (SDP). 3.2.11 soft-state reservation: A type of reservation whereby the requested resources are reserved for a finite amount of time. 3.2.12 transport bearer: A transport layer connection of defined QoS characteristics (e.g., bandwidth, delay and bit error rate

43、). NOTE One example of a transport bearer is the IP-connectivity access network (IP-CAN) bearer in general packet radio service (GPRS) access networks (see ETSI TR 121 905 for the definition of bearer) or the multi-protocol label switching (MPLS) label switched path (LSP) in core networks. A transpo

44、rt bearer may incorporate one or more IP media flows according to certain criteria e.g., transport QoS class. 3.2.13 transport signalling protocol: The signalling protocol used to control the transport layer session. NOTE One example of a transport signalling protocol is the packet data protocol (PD

45、P) context within a GPRS access network. 3.2.14 transport subscription information: A set of information received from the network attachment control functions (NACF) to the PD-PE over the Ru interface to be used as a basis for verification of the UE transport service profile in the process of polic

46、y decisions at the PD-PE, including information about the UE transport profile (e.g., maximum bandwidth, transport service class). 3.2.15 UE transport session: The association between a user equipment (UE) and a transport stratum. NOTE The association is identified by a UE IP address together with a

47、 UEs identity information, if available. A UE transport session may incorporate one or more transport bearers. Support for multiple transport bearers per UE transport session is transport specific. A UE transport session exists for as long as the UE IP address is assigned and announced to the IP net

48、work. One example of a UE transport session is the IP-CAN session in certain access networks (e.g., GPRS). 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: AAA AA-Answer AAR AA-Request APN Access Point Name ARP Allocation and Retention Priority ASA Abor

49、t-Session-Answer ASR Abort-Session-Request AVP Attribute-Value Pair BGW Border Gateway BRAS Broadband Remote Access Server CCA Credit-Control-Answer CCR Credit-Control-Request CDMA Code Division Multiple Access CEA Capabilities-Exchange-Answer 4 Rec. ITU-T Q.3303.3 (08/2013) CER Capabilities-Exchange-Request CMTS Cable Modem Termination System DSL Digital Subscriber Line DSLAM DSL Access Multiplexer ETS Emergency Telecommunications Service EPS Evolved Packet System GCID GPRS Charging ID GGSN Gateway