ISO/IEC 24793-2:2010

Information technology — Mobile multicast communications: Protocol over native IP multicast networks — Part 2:

ISO/IEC 24793-2:2010 specifies mobile multicast control protocol (MMCP) over native IP multicast networks for mobile multicast communications. The MMCP can be used to support a variety of multimedia multicasting services in the IP-based wireless mobile networks. The MMC is targeted at the real-time one-to-many multicast services and applications over mobile communications networks. ISO/IEC 24793-2:2010 specifies the procedures and packet formats of the MMCP protocol.

Technologies de l'information — Communications de diffusion groupée mobile: protocole sur des réseaux natifs IP de diffusion groupée — Partie 2:

General Information

• Status: Published
• Publication Date: 14-Dec-2010
• ICS: 35.100.70 - Application layer
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6/WG 7 - Network, transport and future network
• Current Stage: 9093 - International Standard confirmed
• Due Date: 06-Jan-2025
• Completion Date: 06-Jan-2025

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 24793-2
First edition
2010-12-15
Information technology — Mobile
multicast communications: Protocol over
native IP multicast networks
Technologies de l'information — Communications de diffusion groupée
mobile: protocole sur des réseaux natifs IP de diffusion groupée

Reference number
©
ISO/IEC 2010
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©  ISO/IEC 2010
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Published by ISO in 2011
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ii © ISO/IEC 2010 – All rights reserved

CONTENTS
Page
Foreword .  iv
1 Scope . 1
2 Normative references . 1
3 Definitions . 1

4 Abbreviations . 1
5 Overview . 2
6 Considerations . 3
6.1 Protocol model . 3
6.2 Protocol entities . 3
6.3 Reference network configuration . 4
6.4 Messages . 5
7 Procedures . 5
7.1 Multicast data transport . 5
7.2 Session join . 5
7.3 User leave . 6
7.4 Status monitoring . 6
7.5 Handover support . 7
8 Packets . 9
8.1 Packet format and common header . 9
8.2 Parameter format . 10
8.3 Packets for session join . 12
8.4 Packets for user leave . 14
8.5 Packets for status monitoring . 14
8.6 Packets for handover support . 15
Annex A – Timers . 17
Annex B – State transition diagram . 18
Bibliography . 20

© ISO/IEC 2010 – All rights reserved iii

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees
established by the respective organization to deal with particular fields of technical activity. ISO and IEC
technical committees collaborate in fields of mutual interest. Other international organizations, governmental
and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC 24793-2 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 6, Telecommunications and information exchange between systems, in collaboration with
ITU-T. The identical text is published as ITU-T Rec. X.604.1 (03/2010).
ISO/IEC 24793 consists of the following parts, under the general title Information technology — Mobile
multicast communications:
⎯ Part 1: Framework
⎯ Part 2: Protocol over native IP multicast networks

iv © ISO/IEC 2010 – All rights reserved

INTERNATIONAL STANDARD
RECOMMENDATION ITU-T
Information technology – Mobile multicast communications:
protocol over native IP multicast networks
1 Scope
This Recommendation | International Standard describes the specification of mobile multicast control protocol (MMCP)
over native IP multicast networks for mobile multicast communications. The MMCP can be used to support a variety of
multimedia multicasting services in the IP-based wireless mobile networks. The MMC is targeted at the real-time
one-to-many multicast services and applications over mobile communications networks. This
Recommendation | International Standard describes the procedures and packet formats of the MMCP protocol.
2 Normative references
The following Recommendations and International Standards contain provisions which, through reference in this text,
constitute provisions of this Recommendation | International Standard. At the time of publication, the editions indicated
were valid. All Recommendations and Standards are subject to revision, and parties to agreements based on this
Recommendation | International Standard are encouraged to investigate the possibility of applying the most recent
edition of the Recommendations and Standards listed below. Members of IEC and ISO maintain registers of currently
valid International Standards. The Telecommunication Standardization Bureau of the ITU maintains a list of currently
valid ITU-T Recommendations.
– Recommendation ITU-T X.604 (2010) | ISO/IEC 24793-1:2010, Information technology – Mobile
multicast communications: Framework.
3 Definitions
This Recommendation | International Standard uses the terms and definitions that are defined in the MMC framework,
Rec. ITU-T X.604 | ISO/IEC 24793-1.
4 Abbreviations
For the purposes of this Recommendation | International Standard, the following abbreviations are used:
AAA Authentication, Authorization and Accounting
ACK Acknowledgement
ASR Aggregation Status Report
CTT Context Transfer Time
HCT Handover Context Transfer
HIC Handover Initiation Confirm
HIR Handover Initiation Request
HIT Handover Initiation Time
HTA Handover Transfer ACK
ID Identifier
IGMP Internet Group Management Protocol
JWT Join Waiting Time
LJC Local Join Confirm
LJR Local Join Request
LMC Local Mobility Controller
MCS Multicast Contents Server
MLD Multicast Listener Discovery
Rec. ITU-T X.604.1 (03/2010) 1

MMC Mobile Multicast Communications
MMCF MMC Framework
MMCP Mobile Multicast Control Protocol
MN  Mobile Node
MR Multicast Router
PoA Point of Attachment
QoS Quality of Service
SJC Session Join Confirm
SJR Session Join Request
SM Session Manager
SPT  Status Probe Time
SRT Status Report Time
TLV Type-Length-Value
ULC User Leave Confirm
ULR User Leave Request
USP User Status Probe
USR User Status Report
5 Overview
The MMCP provides the control functionality for multicast data channels: Session Join, Status Monitoring and
Handover Support. A multicast data session consists of an MCS (sender) and many MNs (receivers). The MCS will
transmit multicast data packets to many prospective receivers, according to a predetermined program schedule. To
receive the multicast data in the network, an MN will first perform the IGMP/MLD operations with the corresponding
access router in the IP subnet. The MMCP can be used for control of multicast sessions together with any multicast data
channels. The details of multicast data transport mechanisms are outside the scope of MMCP.
For Session Join, a prospective MN shall send a session join request message to the MMCP session manager (SM). The
join request message shall include the following information: Session ID and MN ID. MN ID is an identifier allocated
to the MN, which may be given a priori by a services provider. On receipt of the session join request message, the SM
shall respond to the MN with a session join confirm message. The responding confirmation message will indicate
whether the join request is accepted or not. In case that a local mobility controller (LMC) is allocated to the MN, the
session join confirm message will also contain the contact information of the associated LMC. In case that an LMC is
assigned to the MN, after receiving the join confirm message, the MN shall also join the designated LMC by sending a
local join request message. On receipt of the local join request message, the LMC shall respond to the MN with a local
join confirm message.
For User Leave, during the multicast session, an MN may want to leave the session. For this purpose, the MN may send
a user leave request message to the LMC (in case that an LMC is assigned to the MN) or to the SM (in case that no
LMC is assigned to the MN). The LMC (or SM) may respond to the MN with the user leave confirm message. It is
noted that this user leave operation is optional. That is, a certain MN may leave the session without any notice.
Status Monitoring is used by the SM to monitor the dynamics for group/session membership and the status of multicast
data channel (e.g., statistics such as total number of packets received during the session). For status monitoring, each
MN shall send a periodic status report message to its upstream LMC or SM (in case that no LMC is assigned to the
MN). Each LMC will aggregate the status information for its downstream MNs, and send a periodic aggregate status
report message to the SM. In the meantime, the status report messages may be lost in the network. In this case, the
upstream LMC or SM may solicit a status report message to the concerned MN or LMC by sending a status probe
message.
For Handover Support, after movement detection, the MN begins the handover operations by sending a handover
request message to the current LMC. The handover request message shall include the information about the new point
of attachment (PoA) such as the link-layer MAC address or ID of the PoA. On receipt of a handover request message
from the MN, the LMC will first identify which subnet the MN is going to move into. The current LMC can identify the
new LMC by using the address of the ID of the new PoA that is indicated in the handover request message. For
handover support, the current LMC shall send a handover context transfer message to the new LMC. Then, the new
LMC will perform the IGMP/MLD
...