Title :
Joint Resource Allocation and Routing for OFDMA-Based Broadband Wireless Mesh Networks
Author :
Karakayali, K. ; Kang, Joseph H. ; Kodialam, Murali ; Balachandran, Krishna
Author_Institution :
Alcatel-Lucent, Holmdel
Abstract :
In this paper, we investigate joint resource allocation and routing for a wireless mesh network consisting of fixed access points inter-connected through multi-channel wireless links. Some of the mesh routers are assumed to function as gateways with high bandwidth connections to a wired network and the mesh network is assumed to provide multi-hop capability where the traffic entering the mesh via gateways may be carried over multiple wireless hops towards the destination mesh routers. The main objective of this work is to optimize resource allocation and routing in such networks; in this regard, we study a cross- layer optimization problem that includes power control, channel allocation, link scheduling and routing. We provide results highlighting the capacity benefits of our proposed approach; these results indicate that significant throughput improvements can be achieved with cross-layer system design.
Keywords :
OFDM modulation; broadband networks; channel allocation; frequency division multiple access; optimisation; radio links; radio networks; resource allocation; telecommunication network routing; telecommunication traffic; OFDMA-based broadband wireless mesh network routing; channel allocation; cross-layer optimization problem; joint resource allocation; link scheduling; multi channel wireless links; network traffic; orthogonal frequency division multiple access; power control; Bandwidth; Channel allocation; Communication system traffic control; Mesh networks; Power control; Resource management; Routing; Spread spectrum communication; Throughput; Wireless mesh networks;
Conference_Titel :
Communications, 2007. ICC '07. IEEE International Conference on
Conference_Location :
Glasgow
Print_ISBN :
1-4244-0353-7
DOI :
10.1109/ICC.2007.840