UP	Paper 1821	US-M-M	DOWN
A Solution to Hidden Terminal Problem Over A Single Channel In Wireless Ad Hoc Networks
Zhai,Hongqiang		University of Florida
Fang,Yuguang		University of Florida
In wireless multihop ad hoc networks, collision due to hidden terminal problem is common and makes it difficult to provide the required quality of service for multimedia services or support priority-based services. In this paper, we first analyze shortcomings of existing approaches to alleviate the hidden terminal problem. Then we propose a new scheme in which the receiver sends short busy advertisements over the same channel to clear the floor for receiving. It only requires a single transceiver and a single channel. We analyze and evaluate the performance of the proposed scheme extensively. The results show that the new scheme has a much higher efficiency than the existing approaches using a single channel and a single transceiver.
Hongqiang Zhai received his B.E. and M.E. degrees in electrical engineering from Tsinghua University, Beijing, China, in July 1999 and January 2002, respectively. He is currently a Ph.D. candidate at the Department of Electrical and Computer Engineering, University of Florida, Gainesville, Florida. His research interests include medium access control, quality of service, and cross-layer design of networking protocols in wireless networks. He is a student member of the ACM and the IEEE.