دانلود مقاله ISI انگلیسی شماره 70526
ترجمه فارسی عنوان مقاله

زمان بندی مبتنی بر Guard zone در شبکه های ad hoc

عنوان انگلیسی
Guard zone-based scheduling in ad hoc networks
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
70526 2015 9 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Computer Communications, Volume 56, 1 February 2015, Pages 89–97

ترجمه کلمات کلیدی
شبکه های ad hoc؛ ظرفیت؛ هندسه تصادفی
کلمات کلیدی انگلیسی
Ad hoc networks; Capacity; Stochastic geometry
پیش نمایش مقاله
پیش نمایش مقاله  زمان بندی مبتنی بر Guard zone در شبکه های ad hoc

چکیده انگلیسی

In this paper we propose and evaluate a simple scheduling technique that suppresses transmissions by nodes around the desired receiver. Using stochastic geometry, we derive a near-optimal guard zone which can be easily realized in a distributed manner, and exhibits about a 2–40 fold increase in capacity compared to ALOHA; the capacity increase depending primarily on the required outage probability and node density. The capacity loss is about 15–25% compared to a well-known near-optimal centralized scheme. In contrast to centralized scheduling (which is highly impractical), our scheme lends itself to distributed implementation and also protects active links. Our derivations cleanly capture how the optimal guard zone size varies with different network parameters like path loss, outage, spreading gain, and node density, and we show how these results can be used to provide protocol design guidelines.