On the performance enhancement of wireless LAN - a multi-polling mechanism with hidden terminal solution
On the performance enhancement of wireless LAN - a multi-polling mechanism with hidden terminal solution
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无线局域网性能增强——一种带有隐藏终端的多轮询机制解决方案
DOI：
10.1109/glocom.2005.1577689
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Jinyun Zhang
中科院分区：
文献类型：
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作者：
Yue Fang;Daqing Gu;A. B. McDonald;Jinyun Zhang
当前无线局域网（WLAN）的标准化活动集中于提供高吞吐量和支持具有QoS要求的应用。为了实现这些目标，传统IEEE 802.11和.11e协议的MAC机制需要改进。多轮询机制通常被用来提高协议的效率，然而，目前可用的多轮询机制遭受隐藏终端和/或低效的信道使用问题。在本文中，我们提出了一个多轮询机制，利用新的度量信道接入，从而能够有效地利用信道资源，克服隐藏终端问题。分析表明，与传统802.11e相比，该机制将吞吐量从5%提高到40%。
Current standardization activities for wireless local area networks (WLAN) have focused the effort on providing high throughput and supporting applications with QoS requirements. In order to achieve such goals, the MAC mechanisms of legacy IEEE 802.11 and .11e protocols need to be improved. Multipolling mechanisms are often employed to improve the protocol efficiency, however, current available multipolling mechanisms suffer from hidden terminal and/or inefficient channel usage problems. In this paper, we propose a multi-polling mechanism that utilizes novel metric for channel access and thus is capable to utilize channel resource efficiently and overcome the hidden terminal problem. Analysis shows that the proposed mechanism improves the throughput from 5% to 40% compared to legacy 802.11e.