The main focus of the research presented in this paper is to evaluate how efficently a common communication medium such as broadcast radio can be shared by a large number of network devices in an in-building environment. The goal is to recommend an optimal method to fulfil the demanding requriements dictated bhy broadband multimedia applications operating in wireless local area neworks. To this end, a practical and efficient multiaccess scheme called "reserved polling" is proposed and analyzed. It is shown that the new method is able to handle an integrated mix of multimedia traffic and operate robustly in an unreliable wireless transport medium. An analytical approach based on queueing theory is employed to gain some insight into the complex behavior of the protocol. This approach appears to be accurate in predicting its perfomrnace for both bursty and periodic traffic types. The analytical results are verified by network simulation.
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