Referenced Code Development for IMS/SIP system

* This laboratory has been completed.

The SFC Research Consortium

Research Issues

* Research on next-generation high-speed Internet signalling architecture (SIP)


The concept determining the technical system of the current Internet is defined in accordance with IETF (Internet Engineering Task Force) structure as its Internet architecture. As signalling architecture defined therein involves Internet protocol (IP) determining a signalling system to universally exchange multimedia digital information via all nodes (Equipment such as computers, and so forth), this system suitably handles media that involves semantic digital information. This research and development project focuses on researching new signalling architecture within the Internet system, aimed at suitably transmitting multimedia information via a digital communication platform within the global Internet. The aim is to create an environment structure to corroborate this.

Research steps

  1. To clearly define abstract components making up the Internet signalling environment
  2. Design a basic system to enable the defining of component relationships
  3. Design an object model that uniformly handles components from various levels within current Internet structure
  4. Define an interface that enables distribution of information and autonomous intuitive decisions
  5. Make these issues into reality
  6. Corroborate and evaluate these issues

This system must be designed and implemented based on sufficient understanding and experience relating to the concepts of Internet design, management and Internet protocol. The development of this system is essential in order to establish operations of a stable Internet that tends to autonomously and sporadically develop.

Research process

  1. Analysis and abstraction of current Internet usage and the Internet environment as new media
  2. Accurate understanding of standardization, such as IETF, 3GPP/3GPP & ITU-T, within the establishment of conventional Internet signaling architecture
  3. Corroboration via testbed with WIDE Project Joint Research and so forth, and joint development with each related organization
  4. Build international testing environment, focusing on Asia-Pacific network infrastructure

Relationship with other projects

Research and development using domestic and international testbed via cooperation with the WIDE Project


  1. Publication of academic thesis on research results
  2. IETF, 3GPP/3GPP2, ITU-T & TTC proposals
  3. Publication of book containing research results
  4. Global release of prototype using proposed architecture
  5. Release of SIP system testing, generation of interconnection specifications and software for testing
  6. Distribution of various software
  7. Products from each company involved in joint research

Meaning of joint research and anticipated results

One of the biggest problems facing the next-generation Internet environment is that the scope of coverage for applications is becoming extremely large. In particular, there is a real need to establish and develop an environment for real-time operations and the many applications used therein. Application here refers to those that enable the visualization of information so that humans can immediately and intuitively grasp network status.
Our current computer network holds various new possibilities. The aim of this research is to establish technology that provides and shares an intuitive, easy-to-use interface when dealing with knowledge and information distributed over the Internet. This would furnish end users with easy-to-use network services, and along with providing users with a multitude of merits, as network services would be much easier to use, there would also be a radical increase in the number of users. At the same time this should also lead to further penetration of networks within society.

* Research and development of reference programs for next-generation high-speed Internet signalling architecture (SIP)

Aim and goal

In order to move ahead with next-generation information infrastructure, a standard software system for SIP (Next-generation Internet signaling protocol) needs to be developed and made widely available.

Researchers, managers and professors

Jun Murai Director Dean/Professor, Factuly of Environment and Information Studies
Hiroshi Esaki Senior Visiting Researcher, Keio Research Institute at SFC
Osamu Nakamura Professor, Factuly of Environment and Information Studies
Yuji Sekiya Senior Visiting Researcher, Keio Research Institute at SFC