دانلود مقاله ISI انگلیسی شماره 70336
عنوان فارسی مقاله

قابلیت اطمینان و عملکرد شبکه های بی سیم پخش دو بعدی عمومی

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
70336 2016 19 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Reliability and performance of general two-dimensional broadcast wireless network
منبع

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

Journal : Performance Evaluation, Volume 95, January 2016, Pages 41–59

کلمات کلیدی
شبکه های بی سیم؛ IEEE 802 - 11؛ پخش دو بعدی عمومی؛ مشکل ترمینال پنهان - محو شدن و از دست دادن مسیر؛ کنترل دسترسی متوسط
پیش نمایش مقاله
پیش نمایش مقاله قابلیت اطمینان و عملکرد شبکه های بی سیم پخش دو بعدی عمومی

چکیده انگلیسی

In this paper, an analytic model is built to study the medium access control (MAC) performance and reliability of general two-dimensional (2-D) IEEE 802.11 based wireless networks for one-hop broadcast communications. First, a semi-Markov process (SMP) model is introduced to capture the medium contention and backoff behavior and the impact of hidden terminal problem in IEEE 802.11 broadcast wireless networks in a more precise way. An M/G/1/K queue is used to model arrival and service of messages in an individual mobile terminal. To the contention for the shared medium, the SMP model interacts with the M/G/1/K queue through fixed-point iteration. Furthermore, based on the fixed-point solution, performance metrics including packet delivery probability (PDP), MAC-level and Application-level transmission delay, and MAC-level and Application-level packet reception ratio (PRR) are derived. The 2-D PDPs are derived through a coverage area computation for the impact of hidden terminal problem and concurrent transmissions to evaluate point-to-point reception probability, and then through integration of the reception probabilities over the circular intended range of the sending node. The analytical model takes into account IEEE 802.11 backoff counter process, hidden terminal problem, message inter-arrival interval, distinct transmission range, carrier sensing and interference ranges, and Nakagami fading channel with distance dependent path loss. Finally, as an example, the proposed analytic model is applied to a 2-D ad hoc network. The new model is validated through extensive simulations and new observations about the effects of network parameters on the performance and reliability are obtained.

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