Internet DRAFT - draft-allen-simple-msg-3gpp
draft-allen-simple-msg-3gpp
SIMPLE A. Allen
Internet-Draft dynamicsoft
Expires: December 25, 2002 A. Niemi
Nokia
June 26, 2002
3GPP work related to SIP based messaging
draft-allen-simple-msg-3gpp-01
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Copyright Notice
Copyright (C) The Internet Society (2002). All Rights Reserved.
Abstract
The 3rd Generation Partnership Project (3GPP) is using SIP RFC 3261
[1] as the session establishment protocol for the 3GPP IP Multimedia
Core Network Subsystem (IM CN Subsystem, IMS). 3GPP has recently
started working on messaging over the IM CN Subsystem. It is
intended that this will utilize the IM CN Subsystem for delivery and
may be based on IETF protocols including the work being performed in
the SIMPLE working group. In this document is provided an outline
and areas of interest of the 3GPP work on IMS messaging for the
information of the SIMPLE working group.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Messaging in current GSM cellular networks . . . . . . . . . . . 3
3. Messaging in the internet . . . . . . . . . . . . . . . . . . . 3
4. Scope of the messaging work in 3GPP . . . . . . . . . . . . . . 4
5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 4
6. Security Considerations . . . . . . . . . . . . . . . . . . . . 5
References . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 6
Full Copyright Statement . . . . . . . . . . . . . . . . . . . . 7
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1. Introduction
3GPP has selected SIP RFC 3261 [1]. as the protocol to establish and
tear down multimedia sessions in the IP Multimedia Core Network
Subsystem (IM CN Subsystem). A description of the IM CN Subsystem
can be found in 3GPP TS 23.228 [2].
An overview of, and requirements for the 3GPP IM CN Subsystem can be
found in 3GPP Requirements draft [3].
3GPP is currently working towards the definition of the system
requirements for messaging utilizing the SIP based IM CN subsystem.
The plan is for messaging for the SIP based IM CN subsystem to be
part of the 3GPP release 6 which is currently scheduled to be fully
completed by June 2003.
The intention of the authors of this draft is to write a future
detailed messaging requirements draft once the requirements
definition phase within 3GPP has reached maturity. It is expected
that such a draft will be available prior to IETF 55.
2. Messaging in current GSM cellular networks
The Global System for Mobiles (GSM) short message service (SMS) has
been very successful with over 15 billion SMS text messages being
sent worldwide every month. SMS enables mobile users to exchange
text messages with other mobile users and also with computers, and
fax machines. Recently SMS has been enhanced as the Enhanced
Messaging Service (EMS) which enables graphical icons, animations and
audio tunes to be sent along with text. The most recent development
is the Multimedia Messaging Service (MMS) which enables the mobile
user to exchange digital images, graphics, voice, video and audio
clips with other mobile users and also to send such content to email
addresses.
The SMS, EMS and MMS architectures all contain both agents in the
user equipment (terminals) and servers in the network. Messages may
be initiated by terminals or by network servers. Messages may be
exchanged between a number of different types of external
applications such as fax and email.Details of SMS and EMS can be
found in 3GPP TS 23.040 [4] and details of the Multimedia Messaging
Service can be found in 3GPP TS 22.140 [5] and 3GPP TS 23.140 [6].
3. Messaging in the internet
Instant messaging (IM) has been higly successful in the fixed
Internet. Typical characteristics of the service are instant
delivery of the messages and interaction with presence information.
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Users are able to see who is on-line as well as their status.
Another popular Internet service is chat. A Chat room is a "place"
where multiple persons can join, follow and contribute to the ongoing
discussion and leave the "room" at any time. The chat rooms are more
permanent in nature compared to IM exchange and they can be further
divided to the private and public chat rooms. The user in the chat
will receive all messages that are sent by the other participants to
the chat room. Similarly, the user is able to send her messages to
the chat room or even privately to some participant.
4. Scope of the messaging work in 3GPP
The goal of 3GPP is to extend the SIP based IM CN Subsystem (IMS)
with messaging services, while defining the interaction of these new
messaging services with the existing SMS, EMS, and MMS messaging, as
well as Internet based messaging (IM, chat) services. Such
interaction of services may introduce interworking requirements to
the 3GPP Release 6 IMS, and will define the interaction of IMS
messaging with other IMS service capabilities, e.g., the presence
service, and the privacy, security, and charging aspects of IMS.
Overall, the goal is to enable a rich set of messaging services for
the end user.
There is an expectation that the introduction of IMS messaging will
require standardized mechanisms for the creation of messaging groups
(chatrooms), as well as mechanisms to manage and authorize the
members of such entities. The main driver for these standardized
mechanisms is the interoperability of IMS messaging across different
terminals and networks.
Messaging should also integrate well with the Presence service also
being currently developed by 3GPP. Requirements for 3GPP Presence
services have been provided to IETF in 3GPP Presence Requirements
[7].
5. Acknowledgments
The authors would like to thank Juha Kalliokulju (Nokia), Markus
Isomaki (Nokia), Jonathan Rosenberg (dynamicsoft), Ben Campbell
(dynamicsoft), Dean Willis (dynamicsoft), Martin Harris (Orange),
Luisa Marchetto (AWS), Michel Grech (Lucent), Michele Zarri (T-
Mobile), and Sutha Siva (Vodafone Omnitel) for their collaborative
effort in reviewing and supporting this draft and their contribution
to the IMS messaging requirements definition work.
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6. Security Considerations
This draft does not specify a protocol and so raises no security
issues, however security and privacy issues with messaging will need
to be addressed in later requirements.
References
[1] Rosenberg, J., Schulzrinne, H., Camarillo, G., Johnston, A.,
Peterson, J., Sparks, R., Handley, M. and E. Schooler, "SIP:
Session Initiation Protocol", RFC 3261, June 2002.
[2] 3GPP TS 23.228, "IP Multimedia (IM) Subsystem (Stage 2) -
Release 5", Version 5.4.1, April 2002. Version 5.5.0 is
available at
ftp://ftp.3gpp.org/Specs/2002-06/Rel-5/23_series/23228-550.zip
[3] Garcia, M., Mills, D., Bajko, G., Mayer, G., Peterson, F.,
Shieh, H., Allen, A., Chotai, S., Drage, K., Bharatia, J.,
Hobbis, K. and D. Willis, "3GPP requirements on SIP", draft-
garcia-sipping-3ggp-req 03, March 2002. Work in progress.
[4] 3GPP TS 23.040, "Technical realization of the Short Message
Service (SMS)", Version 4.6.0, April 2002. Version 4.6.0 is
available at
ftp://ftp.3gpp.org/Specs/2002-03/Rel-4/23_series/23040-460.zip
[5] 3GPP TS 22.140, "Multimedia Messaging Service; Stage 1", Version
4.2.0, April 2002. Version 4.2.0 is available at
ftp://ftp.3gpp.org/Specs/2002-03/Rel-4/22_series/22140-420.zip
[6] 3GPP TS 23.140, "Multimedia Messaging Service (MMS); Functional
description; Stage 2", Version 4.5.0, April 2002. Version 4.5.0
is available at
ftp://ftp.3gpp.org/Specs/2002-03/Rel-4/23_series/23140-450.zip
[7] Kiss, K., "Requirements for Presence Service based on 3GPP
specifications and wireless environment characteristics", draft-
kiss-simple-presence-wireless-reqs 00, June 2002. Work in
progress.
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Authors' Addresses
Andrew Allen
dynamicsoft
5100 Tennyson Parkway
Plano, TX 75024
EMail: aallen@dynamicsoft.com
Aki Niemi
Nokia
P.O. Box 301
NOKIA GROUP, FIN 00045
Finland
Phone: +358 50 389 1644
EMail: aki.niemi@nokia.com
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