Performance of the Wireless Ad hoc Network W-CHAMB

Matthias Lott, Bernhard Walke Communication Networks, Aachen University of Technology, D–52074 Aachen, Germany Abstra t | A wireless ad hoc multihop network for packet and channel switched communication is introduced and protocols for the air interface are described and evaluated. Ad hoc networks can be realized owing to the ability of stations to route connections according to the current meshing of the network. The decentrally organized network is able to guarantee 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 (RCCs). Channels are established and used for the duration when packets wait for transmission in queues, released when no more packets are to be transmitted, and are re-established when the next packet arrives. Most efficiently use of the spectrum capacity is provided by a mechanism for dynamic channel allocation to services. To guarantee available capacity of the network for the re-establishment of a connection, connection admission control is applied considering the overall interference situation and the current meshing. A performance evaluation of the proposed protocols is given by means of a simulation study in example scenarios.