Optimal resource management in packet-switching TDD CDMA systems

In this article we propose a medium access control protocol for time-divisi on duplex wideband code-division multiple access multimedia wireless commun ications. The MAC protocol exploits both time-division and code-division st atistical multiplexing to efficiently accommodate real-time voice and video traffic and non-real-time bursty data traffic. An optimal packet schedulin g algorithm is proposed to allocate system resources to each user for QoS p rovisioning and high resource utilization. For a practical solution, we pro pose suboptimal resource allocation and develop a heuristic bin-packing alg orithm to solve the packet scheduling problem. Numerical results are presen ted to demonstrate the performance of the suboptimal packet scheduling algo rithm for mixed voice and data traffic.