IEEE 802.11n MAC Enhancement and Performance Evaluation
IEEE 802.11n MAC Enhancement and Performance Evaluation
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IEEE 802.11n MAC 增强和性能评估
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Hung
中科院分区：
文献类型：
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作者：
Chih;Hung
基于IEEE 802.11的WiFi无线技术是提供无处不在的网络接入的最有前途的技术之一。IEEE 802.11工作组一直致力于通过对基本802.11标准进行新的修订来改进这种无线技术。最近，IEEE 802.11n修正案被创建以增强802.11以实现更高的吞吐量操作。不仅标准化了新的物理层增强，而且还定义了新的媒体访问控制层机制。在本文中，我们研究了建议的802.11n MAC层功能：聚合，块确认和反向机制的网络性能增强。我们在NS-2仿真平台上实现了一个新的802.11n模块。仿真结果验证了802.11n MAC层增强的有效性。802.11n MAC增强有效地提高了VoIP性能。
The IEEE 802.11-based WiFi wireless technology is one of the most promising technologies to provide ubiquitous networking access. The IEEE 802.11 working group has always strived to improve this wireless technology through creating new amendments to the base 802.11 standard. Recently, IEEE 802.11n amendment was created to enhance 802.11 for higher throughput operation. Not only new Physical Layer enhancements are standardized, but new Medium Access Control Layer mechanism are also defined. In this paper, we examine the network performance enhancement by the proposed 802.11n MAC layer features: aggregation, block acknowledgement, and reverse direction mechanism. We implemented a new 802.11n module in the NS-2 simulation platform. The simulation results demonstrated the effectiveness of 802.11n MAC layer enhancement. VoIP performance is effectively improved with 802.11n MAC enhancement.