A Multi-Rate Aware Routing Protocol for IEEE 802.11 Ad Hoc Wireless Networks
| Autor: | Guo-Yuan Hu, 胡國元 |
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| Rok vydání: | 2006 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 94 In ad hoc networks, when two nodes want to communicate may not be within wireless transmission range of each other, nodes could be enlist the aid of other nodes in forwarding packets to each other. In order to facilitate communication within the ad hoc network, a multi hop routing protocol is used to discover routes between nodes. Most conventional ad hoc routing protocols primarily carry over from wired networks that using the minimum hop count as the metric to make routing decisions. However, in the wireless networks with multiple data rates, the data rate of wireless network is inversely proportional to the transmission distance. And each hop in paths chosen by minimum hop count metric will tend to have a longer physical span and also be associated with a lower data rate. Therefore, the conventional minimum hop count approach will be not suitable for the multi-rate wireless networks. In this thesis, we will propose a routing protocol based on distance vector algorithm. We investigate the cross layer design methods that take into account both IEEE 802.11 multi- rate capacity as well as the load condition of neighboring nodes, thus aiming to achieve higher network throughput. Referring from the link rate and variation of load, the proposed scheme can effectively minimize the transfer delay from source to destination and delay jitter. Simulation results show that the drawback of conventional minimum hop count approach is largely overcome by the proposed scheme. Furthermore the proposed routing protocol can find the better routing path for packets. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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