Considerations on preestablished tree rerouting handoff protocols for wireless ATM PCN

Handoff in an ATM-based wireless network is an important and hard problem. Mobile virtual circuit (MVC) and virtual connection tree (VCT) represent an approach of preestablished tree rerouting. However, a major error is found in the MVC based handoff scheme. Possible remedies to it are suggested. Co mparisons between MVC and VCT are made and limitations of VCT are discussed . For a better solution, an architecture for an ATM-based wireless PCN is p roposed and a simple but efficient handoff scheme based on this architectur e is described. Analysis shows that it shares the advantages of VCT while o vercoming the latter's limitations. (C) 1999 Elsevier Science B.V. All righ ts reserved.