A METHOD OF PROVIDING BANDWIDTH GUARANTEE IN MULTIUSER WIRELESS LAN ENVIRONMENT

摘要

With increasing demand for multimedia services over the packet data network infrastructure, WLAN networks are being considered as a good alternative to its wired counterparts due to the usual wireless advantage. However the MAC protocol defined by IEEE (based on Distributed Coordinated Function) does not provide QoS guarantee to run streaming media applications. In this paper we describe a scheme to support bandwidth guarantee in a multiuser environment with modification to PCF. We have tested the designed method by simulating various multimedia applications using ns-2 simulator. The simulation results show, with the proposed modification we can allocate the guaranteed bandwidth to multiple users and also ensure that optimal utilization of channel in spite of wireless problem.