Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Interference-Limited MAC Protocol for MANETs with Directional Antennas
WOWMOM '05 Proceedings of the Sixth IEEE International Symposium on World of Wireless Mobile and Multimedia Networks
Mobile Grid Routing Algorithm in Mobile Ad Hoc Networks with Obstacles
SKG '06 Proceedings of the Second International Conference on Semantics, Knowledge, and Grid
Enhancing the Performance of Ad Hoc Wireless Networks with Smart Antennas
Enhancing the Performance of Ad Hoc Wireless Networks with Smart Antennas
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Mobile ad hoc networks are designed to work in environments, where the terrains have unpredictable obstacles such as hills, water bodies, buildings or regions without any nodes. In the mobile ad hoc network, the mobile nodes use the directional antennas to achieve high spatial reuse. If the nodes with the directional beam move, then the obstacles may come between the communicating nodes. The link quality deteriorates resulting in link break, causing disruption in the communication. This paper proposes a scheme, which allows the mobile nodes to maintain the link in an irregular terrain by dynamically changing antenna mode from directional to omni. The proposed model has been simulated using Qualnet simulator (version 4.5). The simulation results shown that the proposed model is improved the network performance in terms of packet delivery ratio, number of link breaks and number of hops.