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ABSTRACT

This Paper firstly introduces the concepts of service capability and integrated service in IMS (IP Multimedia Subsystem). Then we propose a service invocation mechanism for integrated services in IMS based on the service composition entity SCIM (Service Capability Interaction Manager) as well as the service invocation mechanism of Initial Filter Criteria (iFC) specified by 3GPP. In order to achieve the service composition function of this mechanism, we give the specific definition of Core Service Capability and Auxiliary Service Capability that compose an integrated service, and propose to add an extended SIP (Session Initiation Protocol) header called "Serv-ID" to SIP messages, which enables service capabilities to tell SCIM their identities effectively to match the service triggering criteria. In the last part of the paper, we elaborate how the mechanism works and how the iFC plays its role in the mechanism through an example of triggering the Multimedia Message integrated service.

REFERENCES

• 1: 3GPP, "Services and service capabilities", TS 22.105.
• 2: P. M. Carpenter, M. L. F. Grech. 2002. "Standardised service capabilities: the need for standardization illustrated by the development of the presence service", 3rd International Conference on 3G Mobile Communication Technologies,
• 3: Zarri, M. 2003. "Future service capabilities offered by the 3GPP system", 4th International Conference on 3G Mobile Communication Technologies.
• 4: Fujii K., Suda T. "Semantics-Based Dynamic Service Composition", IEEE Journal on Selected Areas in Communications, December 2005.
• 5: Julia Gross , Florian Wegscheider , Joachim Zeiss, Corba Component Based Implementation of Telecom Services Building Blocks, Proceedings of the 7th International Conference on Enterprise Distributed Object Computing, p.308, September 16-19, 2003
• 6: Gu X., Nahrstedt. 2006. "Distributed Multimedia Service Composition With Statistical QoS Assurances", IEEE Transactions on Multimedia, February.
• 7: Gouya A., Crespi N,. "SCIM (Service Capability Interaction Manager) Implementation Issues in IMS Service Architecture", IEEE International Conference on Communications (ICC 2006), June 2006, pp. 1748--1753.
• 8: Anahita Gouya , Noel Crespi , Emmanuel Bertin, Service Invocation Issues within the IP Multimedia Subsystem, Proceedings of the Third International Conference on Networking and Services, p.33, June 19-25, 2007 [doi>10.1109/ICNS.2007.108]
• 9: 3GPP, "IP Multimedia (IM) Subsystem Cx and Dx Interfaces; Signaling flows and message contents", TS 29.228.
• 10: 3GPP, "Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS)", TS 22.228.
• 11: 3GPP, "Network architecture", TS 23.002.
• 12: 3GPP, "Multimedia Messaging Service (MMS); Functional description", TS 23.140.
• 13: 3GPP, "IP Multimedia session handling; IM call model", TS 23.218.
• 14: 3GPP, "Identification of Communication Services in IMS", TR 23.816.

INDEX TERMS

Primary Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.3 Network Operations
          Subjects: Network management

Additional Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.3 Network Operations
          Subjects: Public networks

General Terms:
Algorithms, Design, Management

Keywords:
IMS (IP multimedia subsystem), SCIM (service capability interaction manager), integrated service, service capability