Wireless VoIP: Opportunities and Challenges

  • Jin Yang
  • Ioannis Kriaras
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1748)


Next generation wireless networks are going to use IP capable mobile terminals and support both voice/multimedia and data services. VoIP is a promising technology allowing a converged core network for all services, and provides a service platform for easier and quicker service creation. Application of VoIP in wireless networks, however, is not so straightforward as people may expect. Among other issues, mobility support is perhaps the most challenging one. The different levels of mobility support (terminal, personal and service mobility) highlight the gap between the existing VoIP framework, which is so far focusing on fixed networks, and the requirements in a wireless environment. After analyzing the existing solutions/proposals for this problem, a framework is proposed in which the mobility-related services are decomposed into several levels so that mobility support is made available to many applications. This layered approach would help to lead to a mobility enabled wireless IP infrastructure in which voice service is just an application.


Session Initiation Protocol Mobile Terminal Home Agent Mobility Support Visitor Location Register 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Jin Yang, Emiliano Mastromartino, “A proposed model for TIPHON mobility support”, 10TD103, contribution to ETSI TIPHON, June 1998, Israel.Google Scholar
  2. 2.
    Jin Yang, Emiliano Mastromartino, Ioannis Kriaras, “Personal mobility support in VoIP”, Proceedings of 4th ACTS Mobile Summit, June 1999, ItalyGoogle Scholar
  3. 3.
    Wanjiun Liao, Victor O. K. Li, “Mobile extension to H323”, 13TD092, contribution to ETSI TIPHON, May 1999, Thailand.Google Scholar
  4. 4.
    Guilhem Ensuque, “Towardts an integrated IP/UMTS network architecture”, Proceedings of 4th ACTS Mobile Summit, June 1999, ItalyGoogle Scholar
  5. 5.
    G. A. Thom, “H.323: the Multimedia Comm. Standard for Local Area Networks,” IEEE Comm. Magazine, pp. 52–56, Dec. 1996Google Scholar
  6. 6.
    C. Perkins ed., “IP mobility support”, IETF RFC 2003, Oct. 1996Google Scholar
  7. 7.
    Andras G. Valko, “Cellular IP: a new approach to Internet host mobility”, Computer Communication Review, ACM press, Vol 29,Number 1, January 1999Google Scholar
  8. 8.
    Henning Schulzrinne, “Personal mobility for multimedia services in the Internet”, European Workshop on Interactive Distributed Multimedia Systems and Services, (Berlin, Germany), Mar. 1996.Google Scholar
  9. 9.
    “Analysis of existing roaming techniques applicable to TIPHON mobility services”, DTR7001, ETSI TIPHON document.Google Scholar
  10. 10.
    Mikael Degermark et al. “CRTP over cellular radio links”, Internet-draft, IETF, June 1999.Google Scholar
  11. 11.
    Mark Handley et al., “SIP: session initiation protocol”, Internet draft, IETF, Sept. 1998Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Jin Yang
    • 1
  • Ioannis Kriaras
    • 1
  1. 1.UMTS Advanced DevelopmentLucent TechnologiesSwindonUK

Personalised recommendations