QoS routing in ad hoc wireless networks

The emergence of nomadic applications have recently generated a lot of interest in wireless network infrastructures which support multimedia services. In this paper; we propose a bandwidth routing algorithm for multimedia support in a multihop wireless network. This network can be interconnected to wired networks (e.g. ATM or Internet) or stand alone. Our bandwidth routing includes bandwidth calculation and reservation schemes. Under such a routing algorithm, we can derive a route to satisfy bandwidth requirement for QoS constraint. At a source node, the band-width information can be used to decide to accept a new call or not immediately. This is specially important to carry out a fast handoff when interconnecting to an ATM backbone infrastructure. It enables an efficient call admission control. The simulation results show that the band-width routing algorithm is very useful in extending the ATM virtual circuit sen,ice to the,wireless network. Different types of QoS traffic can be integrated in such a dynamic radio network with high performance.