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 Channel Resource Allocation for VoIP Applications in Collaborative IEEE Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID314397 11 pages doi 2010 314397 Research Article Channel Resource Allocation for VoIP Applications in Collaborative IEEE Networks Deyun Gao 1 Chuan Heng Foh 2 Jianfei Cai 2 and Hongke Zhang1 1 School of Electronics and Information Engineering Beijing Jiaotong University Beijing 100044 China 2 School of Computer Engineering Nanyang Technological University Singapore 639798 Correspondence should be addressed to Chuan Heng Foh aschfoh@ Received 10 March 2010 Revised 4 June 2010 Accepted 22 July 2010 Academic Editor W. H. Zhuang Copyright 2010 Deyun Gao 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. Collaborations between the IEEE and the IEEE networks operating in a common spectrum offers dynamic allocate bandwidth resources to achieve improved performance for network applications. This paper studies the bandwidth resource allocation of collaborative IEEE and IEEE networks. Consider delivering data packets between mobile stations and Internet users through an access point AP of the IEEE network and a base station BS of the IEEE network operating on a common frequency band we analyze their medium access control MAC protocols frame structures and design a cooperation mechanism for the IEEE and the IEEE networks to share the same medium with adaptive resource allocation. Based on the mechanism an optimized resource allocation scheme is proposed for VoIP applications. An analytical model is developed for the study to show significant improvements in voice capacity for our optimized resource allocation scheme. 1. Introduction There have been tremendous advances in wireless networks and mobile devices in recent
