Seamless Handover for Multi-user Sessions with QoS and Connectivity Support

  • Eduardo Cerqueira
  • Luis Veloso
  • Paulo Mendes
  • Edmundo Monteiro
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4517)


Seamless handover over heterogeneous mobile environments is a major requirement to the success of the next generation of networks. However, seamless movement requires the control of the quality level and connectivity of communication sessions with no perceived service degradation to the users. This seamless characteristic is equally important for communication sessions encompassing only one or multiple receivers, being the latter called multi-user sessions. This paper presents a solution to allow seamless mobility for multi-user sessions over heterogeneous networks with mobile receivers and static senders. The proposed solution integrates end-to-end Quality of Service (QoS) mapping, QoS adaptation and connectivity control with seamless mobility support. The latter is achieved by using buffers in the mobile nodes and caches in the access-routers together with mobility prediction and context transfer schemes. Simulations present the efficiency of this proposal to setup ongoing sessions and its impact in reducing packet losses during movement.


Multi-user sessions Seamless mobility Quality of Service Heterogeneous Networks 


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  1. 1.
    Hartung, F., et al.: Advances in Network-Supported Media Delivery in the Next-Generation Mobile Systems. IEEE Communications Magazine 44(8) (2006)Google Scholar
  2. 2.
    Veloso, L., et al.: Mobility Support of Multi-User Services in Next Generation Wireless Systems. In: IEEE International Performance Computing and Communications Conference (April 2007)Google Scholar
  3. 3.
    Cerqueira, E., et al.: Multi-user Session Control in the Next Generation Wireless System. In: ACM International Workshop on Mobility Management and Wireless Access (October 2006)Google Scholar
  4. 4.
    Min-hua, Y., et al.: The implementation of multicast in mobile IP. In: IEEE Wireless Communication and Networking (March 2003)Google Scholar
  5. 5.
    Yihua, H., et al.: On routing asymmetry in the Internet. In: IEEE Globecom (November 2005)Google Scholar
  6. 6.
    Cerqueira, E., et al.: A Unifying Architecture for Publish-Subscribe Services in the Next Generation IP Networks. In: IEEE Globecom (November 2006)Google Scholar
  7. 7.
    Yeh, C., et al.: SIP Terminal Mobility for both IPv4 and IPv6. In: International IEEE Conference on Distributed Computing Systems Workshops (July 2006)Google Scholar
  8. 8.
    Malki, K.: Low Latency Handoffs in Mobile IPv4. IETF Internet Draft (October 2005)Google Scholar
  9. 9.
    Liu, Y., Chen, Y.: A Distributed Buffer Management Approach Supporting IPv6 Mobility. In: 10th IEEE Workshop on Future Trends of Distributed Computing Systems (May 2004)Google Scholar
  10. 10.
    Hillebrand, J., et al.: Quality-of-Service Management for IP-based Mobile Networks. In: IEEE Wireless Communications and Networking Conference, March 2005, vol. 2 (2005)Google Scholar
  11. 11.
    Miloucheva, I.: Context Management for Efficient Mobile Multicast Services. In: International Workshop on Context in Mobile Human Computer Interfaces (September 2005)Google Scholar
  12. 12.
    El-Gendy, M., et al.: Paving the first mile for QoS-dependent applications and appliances. In: Twelfth IEEE International Workshop on Quality of Service, IWQOS (June 2004)Google Scholar
  13. 13.
    Ruy, M., et al.: QoS class mapping over heterogeneous networks using Application Service Map. In: IEEE International Conference on Networking, International Conference on Systems and International Conference on Mobile Communications and Learning Technologies (April 2006)Google Scholar
  14. 14.
    Mammeri, Z.: Approach for End-to-End QoS Mapping and Handling. In: IFIP International Conference on Wireless and Optical Communications Networks (March 2005)Google Scholar
  15. 15.
    Chiu, H., Yeung, K.: Fast-response Receiver-driven Layered Multicast with Multiple Servers. In: IEEE Asia-Pacific Conference on Communications (October 2005)Google Scholar
  16. 16.
    Hayder, R., et al.: Scalable Video TranScaling for the Wireless Internet. EURASIP Journal on Applied Signal Processing 2 (2004)Google Scholar
  17. 17.
    Zhang, B., et al.: Host Multicast: A Framework for Delivering Multicast to End Users. In: Annual Joint Conference of the IEEE Computer and Communications Societies (June 2002)Google Scholar
  18. 18.
    Pearce, E., et al.: System and Method for Enabling Multicast Telecommunications. Technical Report - Patent, US7079495 B1 (July 2006)Google Scholar
  19. 19.
    Begeja, L.: System and Method for Delivering Content in a Unicast/Multicast Manner. Technical Report - Patent, US708142 B1 (July 2005)Google Scholar
  20. 20.
    Jumbiao, Z.: Multicast over Unicast in a Network. Technical Report - Patent, MX2006PA03857 (July 2006)Google Scholar
  21. 21.
    Ash, J., et al.: QoS NSLP QSPEC Template. IETF Internet Draft (October 2006)Google Scholar
  22. 22.
    Sricharan, M., et al.: An Activity Based Mobility Prediction Strategy for Next Generation Wireless Networks. In: IFIP Conference on Wireless and Optical Communications Networks (April 2006)Google Scholar
  23. 23.
    Camilo, T.: SSM Extension for NS-2 (December 2006),

Copyright information

© Springer Berlin Heidelberg 2007

Authors and Affiliations

  • Eduardo Cerqueira
    • 1
  • Luis Veloso
    • 1
  • Paulo Mendes
    • 2
  • Edmundo Monteiro
    • 1
  1. 1.University of Coimbra, Pinhal de Marrocos, 3030-290 CoimbraPortugal
  2. 2.DoCoMo Euro-Labs, Landersbergerstr, 312, 80687 MunichGermany

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