A high-throughput path metric for multi-hop wireless routing
Proceedings of the 9th annual international conference on Mobile computing and networking
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Proceedings of the 1st international conference on Embedded networked sensor systems
Energy-efficient forwarding strategies for geographic routing in lossy wireless sensor networks
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
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Proceedings of the 6th ACM international symposium on Mobile ad hoc networking and computing
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Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
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WASA '07 Proceedings of the International Conference on Wireless Algorithms,Systems and Applications
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IEEE Transactions on Mobile Computing
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IEEE Transactions on Information Theory
On throughput efficiency of geographic opportunistic routing in multihop wireless networks
Mobile Networks and Applications
Economy: a duplicate free Opportunistic Routing
Mobility '09 Proceedings of the 6th International Conference on Mobile Technology, Application & Systems
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INFOCOM'10 Proceedings of the 29th conference on Information communications
Opportunistic routing in multi-radio multi-channel multi-hop wireless networks
IEEE Transactions on Wireless Communications
Survey Paper: Opportunistic routing - A review and the challenges ahead
Computer Networks: The International Journal of Computer and Telecommunications Networking
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Geographic opportunistic routing (GOR) is a new routing concept in multihop wireless networks. In stead of picking one node to forward a packet to, GOR forwards a packet to a set of candidate nodes and one node is selected dynamically as the actual forwarder based on the instantaneous wireless channel condition and node position and availability at the time of transmission. GOR takes advantages of the spatial diversity and broadcast nature of wireless communications and is an efficient mechanism to combat the unreliable links. The existing GOR schemes typically involve as many as available next-hop neighbors into the local opportunistic forwarding, and give the nodes closer to the destination higher relay priorities. In this paper, we focus on realizing GOR's potential in maximizing throughput. We start with an insightful analysis of various factors and their impact on the throughput of GOR, and propose a local metric named expected one-hop throughput (EOT) to balance the tradeoff between the benefit (i.e., packet advancement and transmission reliability) and the cost (i.e., medium time delay). We identify an upper bound of EOT and proof its concavity. Based on the EOT, we also propose a local candidate selection and prioritization algorithm. Simulation results validate our analysis and show that the metric EOT leads to both higher one-hop and path throughput than the corresponding pure GOR and geographic routing.