Abstract: According to the basic idea of frame aggregation adopted in IEEE802.11 standards, in this paper, a frame aggregation simulation platform applied for Wi-Fi network is designed by using network simulation software NS2. Based on the research on frame aggregation mechanisms, both the channel utilization and the network throughput are analyzed. According to the characteristics of mobile-node model in NS2 and that of the Wi-Fi network protocols, a cross-layer design framework is implemented on the platform. Moreover, extensive simulations are carried out to verify the performance of the platform. The simulation results match well with the mathematical analysis, which shows the correctness and the effectiveness of the implemented simulation platform.

Key words: frame aggregation, NS2, simulation platform, IEEE 802.11, Wi-Fi

摘要： 针对IEEE802.11标准中帧聚合的基本思想，采用网络仿真软件NS2设计并搭建了一个适用于Wi-Fi网络的帧聚合仿真平台。在对帧聚合机制进行研究的基础上，对信道利用率和网络吞吐率进行了数学分析；基于Wi-Fi网络协议和NS2移动节点模型特点，对帧聚合平台进行了跨层设计。设计了仿真实验，并对帧聚合平台进行性能验证。仿真结果与数学分析一致，验证了平台的正确性和有效性。

关键词: 帧聚合, NS2, 仿真平台, IEEE 802.11, Wi-Fi