1、 TIA-1124 February 2011All-IP System MMD Policy Enhancements System Requirements NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of
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18、A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TIA-1124 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
19、57 58 59 60 i REVISION HISTORY Revision number Content changes. Date 0 Initial Release October 2007 TIA-1124 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 ii Table of Contents
20、 Table of Contentsii List of Figures.ii 1 INTRODUCTION.1 2 REFERENCES2 2.1 Informative References2 3 DEFINITIONS AND ABBREVIATIONS .3 4 GENERAL DESCRIPTION .5 4.1 Architecture Considerations9 5 REQUIREMENTS11 5.1 Policy Contexts .11 5.2 Admission Control 11 5.3 Policy Peering .13 5.4 Policy Manageme
21、nt.14 5.5 Authentication15 5.6 Privacy .15 Annex A Requirement Examples (Informative) 16 List of Figures Figure 1 A Comprehensive Services Architecture 6 TIA-1124 1 2 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
22、51 52 53 54 55 56 57 58 59 60 1 3 4 1 INTRODUCTION Multimedia Doman (MMD) specifications 3 enable an operator to apply Quality of Service (QoS) policy controls to the Internet Protocol (IP) Connectivity Access Network on session-based applications, and to provision flow-based charging rules at the P
23、acket Data Serving Node (PDSN). These current specifications are confined to the PDSN as the sole policy enforcement point supported. The scope of MMD policy needs to be expanded to include overall coordination of network resource usage for Session Initiation Protocol (SIP) 4 and non-SIP application
24、s for all subscribers, enhancements to policy contexts, and incorporation of additional network elements in the policy architecture. This document specifies the system requirements related to these MMD Policy Enhancements, which are intended to guide the associated technical specification developmen
25、t. TIA-1124 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 2 2 REFERENCES 2.1 Informative References The references which are applicable to this specification include the follo
26、wing: 1 3GPP TS 23.228, IP Multimedia Subsystem (IMS) Stage 2. 2 3GPP2 S.R0079-A v1.0, Support for End-to-End QoS Stage 1 Requirements, July 2006. 3 3GPP2 X.S0013-A, Multimedia Domain series, November 2005. 4 IETF RFC3261, SIP: Session Initiation Protocol, June 2002. 5 IETF RFC3344, Mobility Support
27、 for IPv4, August 2002. 6 IETF RFC3775, Mobility Support for IPv6, June 2004. TIA-1124 1 2 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 3 3 4 3 DEFINITIONS AND ABBREVIATIONS The term
28、s and abbreviations which are used within this specification are defined as follows: 1xRTT 1x Radio Transmission Technology AF Application Function AGW Access Gateway AN Access Network AP Access Point AT Access Terminal BREW Binary Runtime Environment for Wireless CDMA Code Division Multiple Access
29、DSL Data Subscriber Line EVDO Evolution Data Only (a.k.a HRPD) FW Fire Wall HRPD High Rate Packet Data IMS IP Multimedia Subsytem IP Internet Protocol MMD Multi-Media Domain NAT Network Address Translation NSP Network Service Provider PCRF Policy and Charging Rules Function PDSN Packet Data Service
30、Node QoS Quality of Service SIP Session Initiation Protocol SLA Service-Level Agreement SSOO Single Sign-On/Off TCP Transmission Control Protocol TV Television VoIP Voice over IP UDP User Datagram Protocol UE User Equipment WCDMA Wide-band CDMA The following definition is used in this specification:
31、 TIA-1124 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 4 IP flow: Any identifiable (classifiable) set of IP packets from a source to one or more receivers for which a common
32、policy treatment has been requested. For example, a stream of packets having the same source address, destination address, protocol, and Transmission Control Protocol/User Datagram Protocol (TCP/UDP) ports is an IP flow. TIA-1124 1 2 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
33、 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 5 3 4 4 GENERAL DESCRIPTION Policy requirements entail QoS requirements in reference 2, which specifies an end-to-end QoS model for cdma20001networks. While reference 2 advances a number of key QoS requi
34、rements for wireless IP networks, there are other capabilities which require policy treatment which are not discussed in that document. These additional capabilities are an integral part of evolution of MMD and are summarized in the following trends: Support for both SIP and non-SIP applications. It
35、 is anticipated that MMD networks will be deployed by operators who already have deployed non-IMS applications. It is also anticipated that these operators are not likely to replace these applications with IP Multimedia Subsystem 1 (IMS)-based versions for some time, if at all. This coexistence is e
36、xhibited in Figure 1 by showing how non-IMS-based SIP services, IMS-based SIP services, non-SIP services (e.g. Binary Runtime Environment for Wireless (BREW) and 3rdparty services are expected to be provided as part of a comprehensive services architecture. As it is likely that these services will c
37、oexist for some time, policy requirements must support the coexistence of both SIP and non-SIP applications. 1cdma2000is the trademark for the technical nomenclature for certain specifications and standards of the Organizational Partners (OPs) of 3GPP2. Geographically (and as of the date of publicat
38、ion), cdma2000is a registered trademark of the Telecommunications Industry Association (TIA-USA) in the United States. TIA-1124 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 3 4 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 6 2
39、2Non-IMSServicesHSSIMSServicesAppServersInternetOther1x RTTEVDOManaged IP NetworkBREWServices3rdParty Operator-Partnerother standards organizations have client-controlled architectures for NAT traversal. The policy requirements of this document should target an appropriate balance between these appr
40、oaches. The current MMD policy specifications primarily address policy control over IP bearer resources and per-flow accounting. Supporting the evolved MMD networks envisioned for the future necessitates enhancing the current specfications to incorporate the following items: Expansion of policy cont
41、exts. The current specifications only discuss QoS and accounting. There is a need to expand this list to include these other policy contexts: o Mobility and Roaming Policy. As part of supporting multiple access technologies, a network operator should also have the capability of controlling whether o
42、r not a roaming operation is permitted and whether or not a handoff operation is permitted. o Access. As part of providing enhanced authorization in an environment comprised of heterogeneous access technologies, a network operator should have the capability of controlling access into its network bas
43、ed on an ATs security status or account status, e.g., quarantining access to a site which allows the subscriber to download required security patches, refresh their pre-paid balance or pay a delinquent account. o Network Selection. With the availability of multiple access technologies, the network o
44、perator should have the capability of defining policies used by the AT for prioritizing network access and selecting which Access Network (AN) it uses for applications. o Packet Flow Optimization. A network should have the capability of searching IP flows, within privacy limits, in order to verify t
45、hat the application negotiated during session establishment is the application actually operating. Additionally, for selected applications incapable of requesting enhanced QoS, the network should be TIA-1124 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
46、 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 8 able, by monitoring IP flows, to detect such applications and automatically employ network resources to provide the appropriate QoS. o Traffic Engineering. The services architecture exhibited in Figure 1 demonstrates th
47、e need to organize and allocate network resources in the most efficient manner in order to meet customer service commitments in the most cost effective manner. A network operator should have the capability of defining policies for admission control and congestion management (e.g. identifying what re
48、sources are allocated to an application, if and how these resources can be modified by an application, how the resources are modified during network congestions, etc.). o Resource Selection. When a user is in a visited network, routing traffic related to low latency applications back to the home net
49、work may result in undesireable latencies and/or network inefficiencies. A network operator should have the capability of defining policies which result in route optimization. o Authentication. After a user agent provides authentication credentials within an operator-hosted session, subsequent re-entry of the same credentials associated with subsequent session hosted by the same operator should not be required. Similarly, when a user terminates a connection to an operator hosted session manager, then all sessions which were previously authenticated under
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