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IEEE 802.11-based one-hop broadcast communications

机译:基于IEEE 802.11的一跳广播通信

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摘要

In wireless one-hop broadcast communications, each node broadcasts messages to inform all neighbors within an intended communication range. Clearly, the packet transmission of the various nodes might interfere with each other due to the overlapping communication ranges. IEEE 802.11 Distributed Coordination Function (DCF) provides some basic mechanisms for coordination of these transmissions. However, due to its distributed nature, DCF suffers from coordination failures, e.g., due to the very well-known hidden terminal problem. When considering realistic radio propagation phenomena to various degrees, these 'incoordination problems' can drastically increase. On the other hand, transceivers with packet capturing capability might be able to deal with some of the uncoordinated packets. In order to understand the effects of different radio propagation environments on packet level incoordination, we provide a detailed simulation study measuring six transmission success/failure categories and five performance metrics. We report quantitative results w.r.t. probability of incoordination and the effects of power-setting and packet retransmission strategies.
机译:在无线单跳广播通信中,每个节点广播消息以在预期的通信范围内通知所有邻居。显然,由于重叠的通信范围,各种节点的分组传输可能会相互干扰。 IEEE 802.11分布式协调功能(DCF)提供了一些基本机制,用于协调这些变速器。然而,由于其分布式性质,DCF遭受协调失败,例如,由于非常众所周知的隐藏终端问题。在考虑到各种程度的现实无线电传播现象时,这些“进入问题”可能会大幅增加。另一方面,具有数据包捕获能力的收发器可能能够处理一些不协调的数据包。为了了解不同无线电传播环境对数据包级别进入的影响,我们提供了一种测量六个传输成功/失败类别和五种性能指标的详细仿真研究。我们报告数量结果W.R.T.进入的概率和电力设置和数据包重传策略的影响。

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