衰落环境下高效可靠传输的跨层多跳方案

Y. Yamao, Yutaro Kida, Y. Kadowaki
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引用次数: 5

摘要

多跳无线自组织网络由于衰落而存在暂时的链路错误。为了提高分组传输可靠性,实现衰落环境下的高效传输,本文提出了一种基于跨层方法和局部节点认知行为的集成动态多跳方案。该方案提供了临时旁路和动态快捷两个重要功能来实现这一目标。提出的MAC协议通过优先考虑捷径而不是旁路和原始通道来避免它们之间的冲突。此外,采用三路分集可以进一步提高传输可靠性。对基本两跳模型的分组传输成功率和平均传输延迟进行了分析和评价。结果表明,与已有的多跳方案相比,该方案在降低传输时延的同时具有更好的传输可靠性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cross-Layer Multi-Hopping Scheme for Efficient and Reliable Transmission in Fading Environment
Multi-hop wireless ad hoc networks suffer from temporary link error due to fading. In order to improve packet transmission reliability and achieve efficient transmission in fading environment, this paper proposes an integrated dynamic multi-hopping scheme based on a cross-layer approach and cognitive behavior of local nodes. The scheme provides two important functions, temporary bypassing and dynamic shortcut, to achieve the goals. The proposed MAC protocol avoids their conflict by giving priority to the shortcut path over the bypass and original passes. Moreover, the transmission reliability can be further improved by triple-path diversity. Packet transmission success probability and average transmission delay were analyzed and evaluated for a basic two-hop model. The results show that the proposed scheme can achieve better transmission reliability with reduced transmission delay, compared with previous multi-hop schemes.
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