Session Description Protocol (SDP) Attributes for Open Mobile Alliance (OMA) Broadcast (BCAST) Service and Content Protection
RFC 5159

Document Type RFC - Informational (March 2008; No errata)
Was draft-dondeti-oma-mmusic-sdp-attrs (individual in rai area)
Last updated 2013-03-02
Replaces draft-dondeti-oma-sip-sdp-attrs
Stream IETF
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Stream WG state (None)
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IESG IESG state RFC 5159 (Informational)
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Responsible AD Cullen Jennings
Send notices to ldondeti@qualcomm.com, anja.jerichow@nsn.com, draft-dondeti-oma-mmusic-sdp-attrs@ietf.org
Network Working Group                                    L. Dondeti, Ed.
Request for Comments: 5159                                QUALCOMM, Inc.
Category: Informational                                      A. Jerichow
                                                  Nokia Siemens Networks
                                                              March 2008

           Session Description Protocol (SDP) Attributes for
              Open Mobile Alliance (OMA) Broadcast (BCAST)
                     Service and Content Protection

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.

Abstract

   This document provides descriptions of Session Description Protocol
   (SDP) attributes used by the Open Mobile Alliance's Broadcast Service
   and Content Protection specification.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 2
   3.  New SDP Attributes  . . . . . . . . . . . . . . . . . . . . . . 2
   4.  Security Considerations . . . . . . . . . . . . . . . . . . . . 3
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 3
     5.1.  Registration of New SDP Attributes  . . . . . . . . . . . . 3
       5.1.1.  Registration of the Attribute
               bcastversion:<major>.<minor>  . . . . . . . . . . . . . 3
       5.1.2.  Registration of the Attribute stkmstream:<id of
               the stkm stream>  . . . . . . . . . . . . . . . . . . . 4
       5.1.3.  Registration of the Attribute
               SRTPAuthentication:<id for SRTP authentication
               algorithm value>  . . . . . . . . . . . . . . . . . . . 5
       5.1.4.  Registration of the Attribute SRTPROCTxRate:<ROC
               transmission rate>  . . . . . . . . . . . . . . . . . . 5
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 6
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 6
     7.1.  Normative References  . . . . . . . . . . . . . . . . . . . 6
     7.2.  Informative References  . . . . . . . . . . . . . . . . . . 6

Dondeti & Jerichow           Informational                      [Page 1]
RFC 5159                OMA BCAST SDP Attributes              March 2008

1.  Introduction

   The Open Mobile Alliance (OMA) Broadcast (BCAST) group is specifying
   service and content protection mechanisms for broadcast services over
   wireless networks.  As part of that specification, several new SDP
   attributes are necessary to allow the broadcast server to signal the
   service and content protection parameters to clients.

   Section 8.2.4 of RFC 4566 [1] requires that new SDP attributes are
   registered through IANA with name, contact information, and
   description (and other similar parameters).  A standards track
   specification is RECOMMENDED if the new attribute(s) will have
   widespread use and interoperability considerations.

   OMA BCAST specifications are expected to be used by broadcast
   wireless systems that are based on 3rd Generation Partnership Project
   (3GPP) Multimedia Broadcast/Multicast Service (MBMS), 3GPP2 Broadcast
   and Multicast Services (BCMCS), and Digital Video Broadcasting -
   Handheld (DVB-H).  Although this would typically be considered a
   "widespread" use, in this case IETF chose to use a non-standards-
   track RFC to register the SDP attributes because OMA maintains change
   control of the documents that specify the interpretation of the
   values in the attributes.

   This document provides descriptions of the SDP attributes used in the
   OMA BCAST Service and Content Protection specification [2].

2.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [3].

3.  New SDP Attributes

   The following new SDP attributes have been specified:

   o  a=bcastversion:<major>.<minor>

   o  a=stkmstream:<id of the stkm stream>

   o  a=SRTPAuthentication:<id for SRTP authentication algorithm value>

   o  a=SRTPROCTxRate:<ROC transmission rate>

   See Section 5 for details on IANA considerations.

Dondeti & Jerichow           Informational                      [Page 2]
RFC 5159                OMA BCAST SDP Attributes              March 2008

4.  Security Considerations

   In addition to the notes in Section 7 of RFC 4566 [1], the following
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