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Báo cáo hóa học: "Research Article A Cross-Layer Routing Design for Multi-Interface Wireless Mesh Networks"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Cross-Layer Routing Design for Multi-Interface Wireless Mesh Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009 Article ID 208524 8 pages doi 10.1155 2009 208524 Research Article A Cross-Layer Routing Design for Multi-Interface Wireless Mesh Networks Tzu-Chieh Tsai and Sung-Ta Tsai Department of Computer Science National Chengchi University Taipei Taiwan Correspondence should be addressed to Tzu-Chieh Tsai ttsai@cs.nccu.edu.tw Received 15 April 2009 Accepted 7 August 2009 Recommended by Naveen Chilamkurti In recent years Wireless Mesh Networks WMNs technologies have received significant attentions. WMNs not only accede to the advantages of ad hoc networks but also provide hierarchical multi-interface architecture. Transmission power control and routing path selections are critical issues in the past researches of multihop networks. Variable transmission power levels lead to different network connectivity and interference. Further routing path selections among different radio interfaces will also produce different intra- interflow interference. These features tightly affect the network performance. Most of the related works on the routing protocol design do not consider transmission power control and multi-interface environment simultaneously. In this paper we proposed a cross-layer routing protocol called M2iRi2 which coordinates transmission power control and intra- interflow interference considerations as routing metrics. Each radio interface calculates the potential tolerable-added transmission interference in the physical layer. When the route discovery starts the M2 iRi2 will adopt the appropriate power level to evaluate each interface quality along paths. The simulation results demonstrate that our design can enhance both network throughput and end-to-end delay. Copyright 2009 T.-C. Tsai and S.-T. Tsai. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium .