A high-throughput path metric for multi-hop wireless routing
Proceedings of the 9th annual international conference on Mobile computing and networking
Routing in multi-radio, multi-hop wireless mesh networks
Proceedings of the 10th annual international conference on Mobile computing and networking
On accurate measurement of link quality in multi-hop wireless mesh networks
Proceedings of the 12th annual international conference on Mobile computing and networking
Key Challenges of Military Tactical Networking and the Elusive Promise of MANET Technology
IEEE Communications Magazine
Quality-Aware Routing Metrics for Time-Varying Wireless Mesh Networks
IEEE Journal on Selected Areas in Communications
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The temporal fluctuations in quality exhibited by the wireless links act as a major challenge in the design of efficient routing protocols in real-world Mobile Ad hoc Networks (MANETs). None of the existing link metrics fully account for the characteristics of data loss and delay on the links of a MANET. This paper provides the design of a novel delay-based link quality metric that uses real-time statistics from the wireless driver to take into account wireless contention, congestion, channel loss and mobility. The proposed delay metric is additive, does not introduce much additional overhead and is reflective of the varying wireless link quality. We design an efficient Link Delay-aware Routing (LDAR) protocol based on the proposed link metric. The proposed protocol has been implemented on a MANET test bed consisting of 5 laptop nodes. The evaluation of our protocol performed through extensive experimentation on the 5-node multi-hop MANET testbed and network simulator NS-2 demonstrate the superior benefits of the new protocol.