A Solution to Hidden Terminal Problem Over a Single Channel in Wireless AD HOC Networks

In multihop wireless networks, hidden terminal problem is common and leads to collision which makes it difficult to provide the required quality for multimedia services or support priority-based services. Existing approaches to this problem either sacrifice throughput noticeably or require additional transceivers and channels. In this paper, we propose a new scheme in which a sender inserts a few dummy bits in the data frame and its intended receiver transmits short busy advertisements over the same channel to clear the floor for receiving. It only requires a single transceiver and a single channel. The performance analysis shows that the new scheme has a much higher efficiency than the existing approaches using a single channel and a single transceiver