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Báo cáo hóa học: " Research Article AWPP: A New Scheme for Wireless Access Control Proportional to Traffic Priority and Rate"

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 AWPP: A New Scheme for Wireless Access Control Proportional to Traffic Priority and Rate | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2011 Article ID 925165 11 pages doi 10.1155 2011 925165 Research Article AWPP A New Scheme for Wireless Access Control Proportional to Traffic Priority and Rate Thomas Lagkas1 and Periklis Chatzimisios2 department of Informatics and Telecommunications Engineering University of Western Macedonia Kozani 50100 Greece 2 CSSN Research Lab Department of Informatics Alexander T.E.I. of Thessaloniki Sindos Thessaloniki 57400 Greece Correspondence should be addressed to Thomas Lagkas tlagkas@ieee.org Received 30 November 2010 Accepted 20 February 2011 Academic Editor Alexey Vinel Copyright 2011 T. Lagkas and P. Chatzimisios. 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. Cutting-edge wireless networking approaches are required to efficiently differentiate traffic and handle it according to its special characteristics. The current Medium Access Control MAC scheme which is expected to be sufficiently supported by well-known networking vendors comes from the IEEE 802.11e workgroup. The standardized solution is the Hybrid Coordination Function HCF that includes the mandatory Enhanced Distributed Channel Access EDCA protocol and the optional Hybrid Control Channel Access HCCA protocol. These two protocols greatly differ in nature and they both have significant limitations. The objective of this work is the development of a high-performance MAC scheme for wireless networks capable of providing predictable Quality of Service QoS via an efficient traffic differentiation algorithm in proportion to the traffic priority and generation rate. The proposed Adaptive Weighted and Prioritized Polling AWPP protocol is analyzed and its superior deterministic operation is revealed. 1. Introduction There is no doubt that the current trend