On quality of monitoring for multi-channel wireless infrastructure networks

Arun Chhetri, Huy Nguyen, Gabriel Scalosub, Rong Zheng

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    39 Scopus citations

    Abstract

    Passive monitoring utilizing distributed wireless sniffers is an effective technique to monitor activities in wireless infrastructure networks for fault diagnosis, resource management and critical path analysis. In this paper, we introduce a quality of monitoring (QoM) metric defined by the expected number of active users monitored, and investigate the problem of maximizing QoM by judiciously assigning sniffers to channels based on knowledge of user activities in a multi-channel wireless network. Two capture models are considered. The first one, called the user-centric model assumes frame-level capturing capability of sniffers such that the activities of different users can be distinguished. The second one, called the sniffer-centric model only utilizes binary channel information (active or not) at a sniffer. For the user-centric model, we show that the implied optimization problem is NP-hard, but a constant approximation ratio can be attained via polynomial complexity algorithms. For the sniffer-centric model, we devise a stochastic inference scheme that transforms the problem into the user-centric domain, where we are able to apply our polynomial approximation algorithms. The effectiveness of our proposed scheme and algorithms is further evaluated using both synthetic data as well as real-world traces from an operational WLAN.

    Original languageEnglish
    Title of host publicationMobiCom'10 and MobiHoc'10 - Proceedings of the 16th Annual International Conference on Mobile Computing and Networking and 11th ACM International Symposium on Mobile Ad Hoc Networking and Computing
    PublisherAssociation for Computing Machinery
    Pages111-120
    Number of pages10
    ISBN (Print)9781450301831
    DOIs
    StatePublished - 1 Jan 2010
    Event11th ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc 2010 - Chicago, IL, United States
    Duration: 20 Sep 201024 Sep 2010

    Publication series

    NameProceedings of the International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc)

    Conference

    Conference11th ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc 2010
    Country/TerritoryUnited States
    CityChicago, IL
    Period20/09/1024/09/10

    Keywords

    • Approximation algorithms
    • Binary independent component analysis
    • Quality of monitoring
    • Wireless networks

    ASJC Scopus subject areas

    • Software
    • Hardware and Architecture
    • Computer Networks and Communications

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