| Summary: | 碩士 === 義守大學 === 資訊工程學系 === 92 === The wireless mobile ad hoc networks (MANET) are becomes increasing popular. By connecting a cluster of mobile hosts, the applications of MANET appear in places where pre-deployment of network infrastructure is difficult or unavailable and emerging communication is required (e.g., natural disasters, battle fields, history building, and festival field grounds). Due to the ratification of standards, wireless devices can transmit at high data rate. IEEE 802.11a operates in the 5GHzband at data rate up to 54Mbps. IEEE 802.11b operates in the 2.4GHz band at 5.5 and 11 Mbps. In a MANET, one essential issue is Medium Access Control (MAC) protocol in the diversified environment with high mobility of the mobile hosts and fading channels.
In this paper, we focus on develop a robust MAC protocol for a MANET with multi-channel and multi-rate in the fading channels by dynamically allocating channel and dynamically modulating the data rate. Through a dynamic channel allocation algorithm, two devices can negotiate the transmission data rate for the fading environment.
This project has great challenge when we intend to consider the diversified environment with multi-channel and multi-rate in the fading channels. It is a difficult job even considering single condition. Hence, we develop a simulator on Network Simulator version 2 (NS2) to evaluate the influence of each technique used in our MAC protocol.
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