Computer Networks: The International Journal of Computer and Telecommunications Networking
Efficient scheduling algorithms for multi-service multi-slot OFDMA networks
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
A fair cross-layer resource allocation scheme with diverse QoS guaranteeing
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Max-matching diversity in OFDMA systems
IEEE Transactions on Communications
Scheduling algorithms for video multicasting with channel diversity in wireless OFDMA networks
MobiHoc '11 Proceedings of the Twelfth ACM International Symposium on Mobile Ad Hoc Networking and Computing
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Adaptive resource management has become a key technique for the next-generation wireless systems to provide desired services at appropriate QoS. Most of the current resource management algorithms are confined to a single layer of the network protocol stack, which leads to an inferior performance. In this paper, we propose a joint MAC-PHY layer resource management algorithm for wireless OFDM networks. The algorithm aims to maximize the system power efficiency given that the fulfillment of the QoS as well as the fairness is guaranteed. We formulate the integrated design of packet scheduling, subcarrier allocation, and power control into a constrained optimization problem. The formulation defines the interaction and cooperation between different components of the algorithm as well as the information exchange between the PHY and MAC layers. A reduced-complexity scheme that solves the optimization problem in polynomial time is then developed based on the special structure of the problem. Analytical and numerical results will show that the proposed algorithm is able to guarantee the same degree of QoS and fairness as the fair queueing systems do in wired channels. Meanwhile, the power efficiency and system performance are significantly improved compared to traditional systems where resources are allocated based on a strict layering architecture