3rd International ICST Conference on Broadband Communications, Networks, and Systems

Research Article

Network Discovery Mechanisms for Fast-handoff

  • @INPROCEEDINGS{10.1109/BROADNETS.2006.4374392,
        author={Ashutosh Dutta and Sunil Madhani and Tao Zhang and Yoshihiro Ohba and Kenichi Taniuchi and Henning Schulzrinne},
        title={Network Discovery Mechanisms for Fast-handoff},
        proceedings={3rd International ICST Conference on Broadband Communications, Networks, and Systems},
  • Ashutosh Dutta
    Sunil Madhani
    Tao Zhang
    Yoshihiro Ohba
    Kenichi Taniuchi
    Henning Schulzrinne
    Year: 2006
    Network Discovery Mechanisms for Fast-handoff
    DOI: 10.1109/BROADNETS.2006.4374392
Ashutosh Dutta1, Sunil Madhani1, Tao Zhang1, Yoshihiro Ohba2, Kenichi Taniuchi2, Henning Schulzrinne3
  • 1: Telcordia Technologies
  • 2: Toshiba America Research Inc.
  • 3: Columbia University


Proactive handoff mechanisms involving secure pre-authentication and proactive configuration help reduce the delay and transient data loss for real-time communication during movement between homogeneous or heterogeneous access networks. Pre-authentication is meant to perform authentication with a network before a mobile moves into the network. To achieve secure pre- authentication with a target neighboring network, a mobile needs to obtain an IP address of the authentication server from the target network when the mobile is still outside the target network and then to establish a security association with the authentication agent in the target network. This requires the mobile to discover the parameters of various network elements in the target network ahead of time so that the mobile can communicate with these network elements to establish proactive security associations. We describe several approaches for a mobile to discover the network elements in target networks before moving into these target networks. We also describe how network discovery can help provide fast-handoff using secure pre-authentication and proactive IP address acquisition during handover between different access networks.