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 On Optimizing Gateway Placement for Throughput in Wireless Mesh Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 368423 12 pages doi 2010 368423 Research Article On Optimizing Gateway Placement for Throughput in Wireless Mesh Networks Ping Zhou 1 Xudong Wang 2 B. S. Manoj 3 and Ramesh Rao3 1 QCTModem Technology Systems Qualcomm Inc. San Diego CA 92121 USA 2 UM-SJTU Joint Institute Shanghai Jiao Tong University Shanghai 200240 China 3 Department of Electrical and Computer Engineering University of California San Diego La Jolla CA 92093 USA Correspondence should be addressed to Xudong Wang wxudong@ Received 4 November 2009 Accepted 24 February 2010 Academic Editor Xinbing Wang Copyright 2010 Ping Zhou et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. An innovative gateway placement scheme is proposed for wireless mesh networks WMNs in this paper. It determines the location of a gateway based on a new performance metric called multihop traffic-flow weight MTW . The MTW computation takes into account many factors that impact the throughput of WMNs that is the number of mesh routers the number of mesh clients the number of gateways traffic demand from mesh clients locations of gateways and possible interference among gateways. Thus the proposed gateway placement scheme provides a framework of significantly improving throughput of WMNs through proper placement of gateways. To evaluate the performance ofthe new gateway placement scheme a nonasymptotic throughput ofWMNs is derived by considering TDMA scheduling. The derivations also provide a guideline for designing scheduling schemes of WMNs. Numeric results show that the proposed gateway placement scheme constantly outperforms other schemes by a large margin. 1. Introduction A wireless mesh network WMN consists of mesh routers and mesh .
