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Link-level measurements from an 802.11b mesh network

Published: 30 August 2004 Publication History

Abstract

This paper analyzes the causes of packet loss in a 38-node urban multi-hop 802.11b network. The patterns and causes of loss are important in the design of routing and error-correction protocols, as well as in network planning.The paper makes the following observations. The distribution of inter-node loss rates is relatively uniform over the whole range of loss rates; there is no clear threshold separating "in range" and "out of range." Most links have relatively stable loss rates from one second to the next, though a small minority have very bursty losses at that time scale. Signal-to-noise ratio and distance have little predictive value for loss rate. The large number of links with intermediate loss rates is probably due to multi-path fading rather than attenuation or interference.The phenomena discussed here are all well-known. The contributions of this paper are an understanding of their relative importance, of how they interact, and of the implications for MAC and routing protocol design.

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      cover image ACM Conferences
      SIGCOMM '04: Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
      August 2004
      402 pages
      ISBN:1581138628
      DOI:10.1145/1015467
      • cover image ACM SIGCOMM Computer Communication Review
        ACM SIGCOMM Computer Communication Review  Volume 34, Issue 4
        October 2004
        385 pages
        ISSN:0146-4833
        DOI:10.1145/1030194
        Issue’s Table of Contents
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      Publication History

      Published: 30 August 2004

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      Author Tags

      1. 802.11b
      2. mesh
      3. wireless

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      SIGCOMM04: ACM SIGCOMM 2004 Conference
      August 30 - September 3, 2004
      Oregon, Portland, USA

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      • (2024)Boosting Collaborative Vehicular Perception on the Edge with Vehicle-to-Vehicle CommunicationProceedings of the 22nd ACM Conference on Embedded Networked Sensor Systems10.1145/3666025.3699328(141-154)Online publication date: 4-Nov-2024
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