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Brief announcement: distributed contention resolution in wireless networks

Authors:

Thomas Kesselheim,

Berthold VöckingAuthors Info & Claims

PODC '10: Proceedings of the 29th ACM SIGACT-SIGOPS symposium on Principles of distributed computing

Pages 124 - 125

https://doi.org/10.1145/1835698.1835731

Published: 25 July 2010 Publication History

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Abstract

We present and analyze simple distributed contention resolution protocols for wireless networks. In our setting, one is given n pairs of senders and receivers located in a metric space. Each sender wants to transmit a signal to its receiver at a prespecified power level, e.g., all senders use the same, uniform power level as it is typically implemented in practice. Our analysis is based on the physical model in which the success of a transmission depends on the Signal-to-Interference-plus-Noise-Ratio (SINR). The objective is to minimize the number of time slots until all signals are successfully transmitted.

Our main technical contribution is the introduction of a measure called maximum average affectance enabling us to analyze random contention-resolution algorithms in which each packet is transmitted in each step with a fixed probability depending on the maximum average affectance. We prove that the schedule generated this way is only an O(log² n) factor longer than the optimal one, provided that the prespecified power levels satisfy natural monontonicity properties. By modifying the algorithm, senders need not to know the maximum average affectance in advance but only static information about the network. In addition, we extend our approach to multi-hop communication achieving the same appoximation factor.

References

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Alexander Fanghänel, Thomas Kesselheim, Harald Räcke, and Berthold Vöcking. Oblivious interference scheduling. In PODC, pages 220--229, 2009.

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Alexander Fanghänel, Thomas Kesselheim, and Berthold Vöcking. Improved algorithms for latency minimization in wireless networks. In ICALP, pages 447--458, 2009.

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Magnús M. Halldórsson. Wireless scheduling with power control. In ESA, pages 361--372, 2009.

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Index Terms

Brief announcement: distributed contention resolution in wireless networks
1. Computer systems organization
  1. Architectures
    1. Distributed architectures
2. Networks
  1. Network architectures
  2. Network types
    1. Mobile networks
    2. Wireless access networks

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Published In

PODC '10: Proceedings of the 29th ACM SIGACT-SIGOPS symposium on Principles of distributed computing

July 2010

494 pages

ISBN:9781605588889

DOI:10.1145/1835698

General Chairs:
Andrea Richa
Arizona State University, USA
,
Rachid Guerraoui
EPFL, Switzerland

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 25 July 2010

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PODC '10: ACM Symposium on Principles of Distributed Computing

July 25 - 28, 2010

Zurich, Switzerland

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Overall Acceptance Rate 740 of 2,477 submissions, 30%

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Towards jamming-resistant and competitive medium access in the SINR model

Physical model based interference classification and analysis

Side Channel: Bits over Interference

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