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: Editorial Quality of Service in Mobile Ad Hoc Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2006 Article ID 92039 Pages 1-3 DOI WCN 2006 92039 Editorial Quality of Service in Mobile Ad Hoc Networks Wei Li 1 Mohsen Guizani 2 and Demetrios Kazakos3 1 Department of Electrical Engineering and Computer Science University of Toledo Toledo OH 43606 USA 2 Department of Computer Science Western Michigan University Kalamazoo MI 49008 USA 3 Department of Electrical and Computer Engineering University of Idaho Moscow ID 83844 USA Received 10 April 2006 Accepted 10 April 2006 Copyright 2006 Wei Li 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. Mobile ad hoc networking is a challenging task due to the lack of resources residing in the network as well as the frequent changes in network topology. Although much research has been directed to supporting quality of service QoS in the Internet and traditional wireless networks present results are not suitable for mobile ad hoc network MANET . QoS support for mobile ad hoc networks remains an open problem drawing interest from both academia and industry under military and commercial sponsorship. MANETs have certain unique characteristics that pose several difficulties in provisioning QoS such as dynamically varying network topology lack of precise state information lack of central control error-prone shared radio channels limited resource availability hidden terminal problems and insecure media and little consensus yet exists on which approaches may be optimal. Future MANETs are likely to be multimode or heterogeneous in nature. Thus the routers comprising a MANET will employ multiple physical-layer wireless technologies with each new technology requiring a multiple access MAC protocol for supporting QoS. Above the MAC layer forwarding routing signaling and
