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Packet fair queueing scheduling based on multirate multipath-transparent CDMA for wireless networks

The traditional layered approach to wireless networks (network, data link, and physical layer) suboptimally utilizes the limited available capacity. We propose a quality of service wireless framework based on the joint design of a packet fair queuing scheduler, demand assignment medium access control (MAC) protocol, and multirate multipath-transparent CDMA-based physical layer. The unique code assignment procedure allows a direct mapping of the packet fair schedule to the physical layer transmission/reception, and supports transmission (service) rates of arbitrarily fine resolution. Judiciously designed user codes combat the harsh time-varying fading environment, and parsimonious code description minimizes overhead in the MAC. Simulations illustrate the merits of our designs.