Connection architecture and protocols to support efficient handoffs over an ATM/B-ISDN personal communications network

  • Authors:

  • Oliver T. W. Yu;Victor C. M. Leung

  • Affiliations:

  • Univ. of British Columbia, Vancouver, B.C., Canada;Univ. of British Columbia, Vancouver, B.C., Canada

  • Venue:
  • Mobile Networks and Applications - Special issue on mobile computing and system services
  • Year:
  • 1996

Quantified Score

Hi-index 0.00

Visualization

Abstract

The next generation personal communication network will likely internetwork wireless networks via the ATM/B-ISDN to enable ubiquitous broadband personal communication services. Support of user terminal mobility, particularly the capability for fast and seamless handoffs, over the ATM/B-ISDN is an expected requirement that is not currently met. We propose extensions to the ATM/B-ISDN user transport and signaling network architectures and signaling protocols to meet these requirements. The new architecture employs the Mobile Virtual Circuit (MVC), a dynamic connection tree in which routes are predetermined but not set up for potential handoff connections. During a handoff, associated signaling using source-routing with a new robust adaptation feature is employed for fast resource allocation to establish the handoff connection by distributed control. We also address the new problem of packet ordering synchronization to enable a seamless handoff. The connection tree reconfigures after each handoff to enable continuous support of successive handoffs. The proposed scheme optimizes handoff delay over the ATM/B-ISDN while minimizing unnecessary resource allocation, chances of handoff failure, and call processing load in the intelligent network, and the extensions are backward compatible to current ATM/B-ISDN standards and implementations.