Coping with communication gray zones in IEEE 802.11b based ad hoc networks
WOWMOM '02 Proceedings of the 5th ACM international workshop on Wireless mobile multimedia
Business Data Communications (5th Edition)
Business Data Communications (5th Edition)
Mobility prediction based neighborhood discovery in mobile Ad Hoc networks
NETWORKING'11 Proceedings of the 10th international IFIP TC 6 conference on Networking - Volume Part I
Transmission range adaptation based energy efficient neighborhood discovery
Proceedings of the 15th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
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Real world MANET routing protocol implementations generally use layer three mechanisms for carrying out connectivity maintenance tasks. In many cases, such mechanisms are based on periodical transmission of Hello messages. When topology changes occur frequently, usage of higher Hello rates than default may lead to higher end-to-end connectivity and available bandwidth. However, in rather static conditions, low Hello rates are adequate to avoid unnecessary bandwidth and power consumption waste. In this paper we present Adaptive Hello Rate (AHR), a two-state adaptive mechanism for adjusting HELLO_INTERVAL parameter in AODV. We evaluate AHR by conducting a set of experiments in real ad-hoc testbeds. Results quantify the potential benefits and tradeoffs of the proposed solution.