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Multi-channel MAC Protocol for Improving Channel Efficiency in Wireless Networks  

Kim, Young-Kyoung (인하대학교 정보통신 대학원 멀티미디어 통신망 연구실)
Yoo, Sang-Jo (인하대학교 정보통신 대학원 멀티미디어 통신망 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.33, no.5A, 2008 , pp. 549-560 More about this Journal
Abstract
In this paper, we propose a new multi-channel MAC protocol to improve the channel efficiency by using two interfaces. Most of previous researches that have considered multi-channel wireless network environments use a common control channel to exchange control signals and they have a bottle neck problem at common control channel as increasing the number of data channels. In the proposed MAC protocol, we separate receiving and transmitting channels so that sending and receiving data and control packets at the same time is possible. It increases the total network throughput. Since there is no common control channel, the network does not suffer from the bottle neck problem. By applying a TDMA scheme, we can avoid packet collisions between data packets and control packets and reduce the possibility of CTS or ACK packet collisions. Simulation results show that the proposed multi-channel MAC protocol improves the total network throughput and channel efficiency compared with the existing method.
Keywords
Multi-channel MAC; Channel Efficiency; Throughput;
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