Performance analysis of a wireless ad hoc network with QoS support

A wireless ad hoc multihop network is introduced and protocols for the air interface are described and evaluated. Ad hoc networks can be realized due to the ability of stations to route connections according to the current me shing of the network. The decentrally organized network is able to guarante e the bandwidth contracted to a connection in a hidden station environment by means of contention-free data transmission, for both, channel and packet switched services, based on real channel connections. Channels are establi shed and used for the duration of a so called train of data packets, releas ed when the train ends and re-established when the next train arrives. To g uarantee available capacity of the network for the re establishment of a co nnection and to guarantee the quality of service needed for a wireless exte nsion of a fixed ATM network, connection admission control is applied consi dering the overall interference situation and the current meshing of the st ations in the network. For the purpose of realistic and reliable performance analysis a simulation tool appropriate for the investigation of the proposed network is introduc ed, and performance results for the proposed protocols are given by means o f event-driven simulation studies in example scenarios. The simulated proto cols have been formally specified in SDL, translated to C++, and embedded i nto a simulation environment.