کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
451970 694439 2013 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Control theoretic optimization of 802.11 WLANs: Implementation and experimental evaluation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Control theoretic optimization of 802.11 WLANs: Implementation and experimental evaluation
چکیده انگلیسی

In 802.11 WLANs, adapting the contention parameters to network conditions results in substantial performance improvements. Even though the ability to change these parameters has been available in standard devices for years, so far no adaptive mechanism using this functionality has been validated in a realistic deployment. In this paper we report our experiences with implementing and evaluating two adaptive algorithms based on control theory, one centralized and one distributed, in a large-scale testbed consisting of 18 commercial off-the-shelf devices. We conduct extensive measurements, considering different network conditions in terms of number of active nodes, link qualities, and data traffic. We show that both algorithms significantly outperform the standard configuration in terms of total throughput. We also identify the limitations inherent in distributed schemes, and demonstrate that the centralized approach substantially improves performance under a large variety of scenarios, which confirms its suitability for real deployments.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Networks - Volume 57, Issue 1, 16 January 2013, Pages 258–272
نویسندگان
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