A new model for packet scheduling in multihop wireless networks
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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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High-Throughput Multicast Routing Metrics in Wireless Mesh Networks
ICDCS '06 Proceedings of the 26th IEEE International Conference on Distributed Computing Systems
Estimation of link interference in static multi-hop wireless networks
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A measurement-based approach to modeling link capacity in 802.11-based wireless networks
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Interference map for 802.11 networks
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An interference-aware fair scheduling for multicast in wireless mesh networks
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Practical service provisioning for wireless meshes
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Understanding congestion control in multi-hop wireless mesh networks
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Validation of a miniaturized wireless network testbed
Proceedings of the third ACM international workshop on Wireless network testbeds, experimental evaluation and characterization
On estimating joint interference for concurrent packet transmissions in low power wireless networks
Proceedings of the third ACM international workshop on Wireless network testbeds, experimental evaluation and characterization
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A measurement study of interference modeling and scheduling in low-power wireless networks
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Carrier sensing and receiver performance in indoor IEEE 802.11b mesh networks
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Neighborhood-centric congestion control for multihop wireless mesh networks
IEEE/ACM Transactions on Networking (TON)
Practical conflict graphs for dynamic spectrum distribution
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Wireless mesh networks (WMNs) have been proposed as a solution for ubiquitous last-mile broadband access. A critical limiting factor for many WMN protocols in realizing their throughput potential is the interference between nodes in the WMN. Understanding and characterizing such interference is important for a variety of purposes such as channel assignment, route selection, and fair scheduling. Instead of using ad hoc heuristics, a recent study proposed characterizing interference in a WMN by measuring two-way interference, i.e., interference between each pair of communicating links.In this paper, we study the extent of multi-way interference, i.e., the interference caused by multiple transmitters to a communicating link. We find through simulations and through measurements of a 32-node wireless testbed that even if these transmitters individually do not interfere significantly with a given communicating link, simultaneous transmissions of them have the potential to significantly affect the throughput of the communicating link. This implies that pairwise interference measurements may be optimistic when used to drive protocols in wireless mesh networks. Encouragingly, we find that this phenomenon, although significant when it occurs, is not widespread. In particular, multi-way interference caused significant additional throughput degradation compared to pairwise interference to a small fraction of the links in the testbed over our measurement period. In addition, we find that there is a strong correlation between the impact of multi-way interference and the quality of the link under consideration. We conclude with recommendations on how protocols should take multi-way interference into account.