کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4953507 1443056 2017 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Channel quality aware cross-layer design based rate adaptive MAC for improving the throughput capacity of multi-hop ad hoc networks
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Channel quality aware cross-layer design based rate adaptive MAC for improving the throughput capacity of multi-hop ad hoc networks
چکیده انگلیسی
In this paper we address the goal of achieving higher throughput capacity in multi-hop wireless ad hoc networks than estimated by capacity scaling laws of Gupta and Kumar (2000) [1]. By exploiting the implications pointed in earlier research, a cross-layer design based channel quality aware rate adaptive MAC algorithm CQRA-MAC is proposed to achieve this goal. CQRA-MAC dynamically switches the MAC transmission rate on the basis of channel quality experienced at the physical layer. The proposed algorithm is implemented by modifying the IEEE 802.11 model of Qualnet 4.5 simulator and its performance is evaluated in static and mobile network scenarios following the random access transport capacity approach. Experimental results show that CQRA-MAC achieves higher throughput than DCF and ARF. The achieved throughput capacity is quantified in terms of measurable network parameters and thus validates equations of random access transport capacity framework (Andrews et al., 2010) [9].
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ad Hoc Networks - Volume 63, August 2017, Pages 45-61
نویسندگان
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