Modelling of a bandwidth management scheme for DECT wireless access to a local area network

The widespread interest for wireless LAN applications has boosted relative research efforts during the last few years. Although both the IEEE and ETSI have proposed wireless LAN standards which utilise the advances in wireless technology to provide high bandwidth, the investigation of the capabilities of applied wireless technologies to provide LAN services are of both technical and economic interest. This paper proposes an implementation oriented architecture and set of functions for a wireless LAN which is based on the ETSI Digital Enhanced Cordless Telecommunications (DECT) protocol. It particularly presents a dynamic bandwidth management scheme, enabling the wireless LAN to efficiently support asynchronous data transfer services characterised by burst mode traffic. For the evaluation of the bandwidth management scheme, the paper proposes an analytic traffic model with adaptive service rate for each system queue and solves it based on a number of logical assumptions. The model is utilised to calculate parameters such as the average delay and the average number of packets in the system queues in order to approximately "describe" the behaviour of the system.