| Summary: | 碩士 === 淡江大學 === 電機工程學系 === 89 === A wireless Ad-hoc network is a collection of mobile hosts, which form a temporary network without the aid of any pre-established infrastructure or centralized administration. In wireless Ad-hoc mobile network, a host desires to communicate with another host may need some intermediate nodes to relay data packets. To maximize the channel resource utilization and minimize the network transfer delay along the path, the shortest path with minimum hops approach is often adapted. However, by considering the employing medium access control (MAC) protocol, the minimum transfer delay from source to destination may be achieved by choosing a longer path but less contention delay.
We propose an efficient delay-oriented routing protocol for mobile Ad-hoc wireless networks. The expected access contention delay of IEEE 802.11 protocol is analyzed to support the routing decision. The protocol will show that the derived path length in proposed delay-oriented routing protocol is slightly higher than that of conventional shortest path with minimum hops approach but it can significantly reduce both average transfer delay and packet loss rate. In order to offer different levels of quality of service (QoS), we can build a multi-path routing protocol by combining the minimum hops with delay-oriented approach.
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