VIRTUAL CONNECTION TREE BASED ALGORITHMS FOR 3G MOBILE COMMUNICATION SYSTEMS

An algorithm for mobile Asynchronous Transfer Mode(ATM) handover that offers service adaptability and efficient allocation of wired resources for connection rates is evaluated in this paper. In future 3G systems there is a requirement for wireless connection rates of up to 2Mbits/sec, it is the objective of this paper to investigate the effects of this increase in rate on a service adaptable handoff algorithm. The algorithm is based on the Virtual Connection Tree (VCT) and provides fast re-routing for delay sensitive services and cell sequencing for cell loss sensitive services. An ATM handoff model is used to analyse the service adaptable algorithm in terms of cell loss and end-to-end delay. Results are discussed proving the advantages of the algorithm for future ATM mobile communications.