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 Utilization-Based Dynamic Scheduling Algorithm for Wireless Mesh Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID312828 11 pages doi 2010 312828 Research Article Utilization-Based Dynamic Scheduling Algorithm for Wireless Mesh Networks Miray Kas 1 Ibrahim Korpeoglu 2 and Ezhan Karasan3 1 Department of Electrical and Computer Engineering Carnegie Mellon University 5000 Forbes Avenue Pittsburgh PA 15213-3890 USA 2 Department of Computer Engineering Bilkent University Ankara 06800 Turkey 3 Department of Electrical and Electronics Engineering Bilkent University Ankara 06800 Turkey Correspondence should be addressed to Miray Kas miraykas@ Received 15 April 2010 Accepted 5 October 2010 Academic Editor Amiya Nayak Copyright 2010 Miray Kas 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. Channel access scheduling is one of the key components in the design of multihop wireless mesh networks WMNs . This paper addresses the allocation demand mismatch problem observed in oblivious WMN channel access scheduling schemes and proposes Utilization-Based Scheduling UBS . UBS is a Spatial-TDMA- STDMA- based dynamic channel access scheduling scheme designed with the aim of increasing the application-level throughput. In UBS each node has a weight which is dynamically adjusted in accordance with the node s slot usage history and packet-queue occupancy. UBS is a fully distributed algorithm where each node adjusts its own weight and makes pseudorandom transmission attempts using only the locally available information. To demonstrate the performance improvements of the dynamic weight adjustment the performance of UBS is compared against other channel access scheduling schemes through extensive ns-2 simulations under both uniform and nonuniform traffic patterns. 1. Introduction Wireless mesh networks WMNs .
