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BACKGROUND

0003) A network typically requires some mechanism for ensuring a desired level of Quality of Service (QoS) for multimedia and other real-time traffic. If the QoS provided to real-time traffic is insufficient then the performance of applications that use that real-time traffic may be unaccept able. Quality of Service is usually provided in the form of either differentiated services or guaranteed services. These services can also be provided to either a flow (belonging to one session) or an aggregate of flows (belonging to several sessions). A traffic flow (or session) is defined as a stream of data packets emanating from the same source and bound for the same destination. Data packets in a session are typically transported along the same path.

0004 The need for providing Quality of Service (QoS) for real-time applications in wireless networks has been driving research activities and standardization efforts for …