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Framework for Session Set-up with Media Authorization (RFC3521)

IP.com Disclosure Number: IPCOM000012166D
Original Publication Date: 2003-Apr-01
Included in the Prior Art Database: 2003-Apr-15
Document File: 26 page(s) / 60K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

L-N. Hamer: AUTHOR [+3]

Abstract

Establishing multimedia streams must take into account requirements for end-to-end QoS, authorization of network resource usage and accurate accounting for resources used. During session set up, policies may be enforced to ensure that the media streams being requested lie within the bounds of the service profile established for the requesting host. Similarly, when a host requests resources to provide a certain QoS for a packet flow, policies may be enforced to ensure that the required resources lie within the bounds of the resource profile established for the requesting host.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 5% of the total text.

Network Working Group                                         L-N. Hamer

Request for Comments: 3521                                       B. Gage

Category: Informational                                  Nortel Networks

                                                                H. Shieh

                                                           AT&T Wireless

                                                              April 2003

         Framework for Session Set-up with Media Authorization

Status of this Memo

   This memo provides information for the Internet community.  It does

   not specify an Internet standard of any kind.  Distribution of this

   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

Abstract

   Establishing multimedia streams must take into account requirements

   for end-to-end QoS, authorization of network resource usage and

   accurate accounting for resources used.  During session set up,

   policies may be enforced to ensure that the media streams being

   requested lie within the bounds of the service profile established

   for the requesting host.  Similarly, when a host requests resources

   to provide a certain QoS for a packet flow, policies may be enforced

   to ensure that the required resources lie within the bounds of the

   resource profile established for the requesting host.

   To prevent fraud and to ensure accurate billing, this document

   describes various scenarios and mechanisms that provide the linkage

   required to verify that the resources being used to provide a

   requested QoS are in-line with the media streams requested (and

   authorized) for the session.

Hamer, et al.                Informational                      [Page 1]

RFC 3521        Session Set-up with Media Authorization       April 2003

Table of Contents

   1.  Introduction....................................................2

   2.  Conventions used in this document...............................3

   3.  Definition of terms.............................................4

   4.  The Coupled Model...............................................5

       4.1   Coupled Model Message Flows...............................6

       4.2   Coupled Model Authorization Token.........................8

       4.3   Coupled Model Protocol Impacts............................8

   5.  The Associated Model <<using One Policy Server>>................8

       5.1   Associated Model Message Flows

             <<using One Policy Server>>...............................9

       5.2   Associated Model Autho...