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一种基于IEEE 802.11ac协议标准的帧聚合实现算法
引用本文:杨永鹏,刘天琦,杨真真.一种基于IEEE 802.11ac协议标准的帧聚合实现算法[J].教育技术导刊,2019,18(9):192-195.
作者姓名:杨永鹏  刘天琦  杨真真
作者单位:1. 南京信息职业技术学院 计算机与软件学院;2. 南京邮电大学 理学院,江苏 南京 210023
基金项目:国家自然科学基金项目(61501251);中国博士后科学基金项目(2018M632326);江苏省高等学校大学生创新创业训练计划项目(创新类项目)(201913112012Y);江苏省高校自然科学面上项目(19KJB510044);通信与网络技术国家工程研究中心开放课题项目(TXKY17010);南京邮电大学引进人才科研启动基金项目(NY214191);南京邮电大学教学改革研究项目(JG00718JX25,JG00716JX77)
摘    要:如何提升IEEE 802.11ac无线局域网协议标准中的MAC层效率,进而提高无线局域网传输速率,是当前研究热点。提出一种基于IEEE 802.11ac协议标准新的帧聚合实现算法,该算法一方面根据系统动态速率算法选择的速率自适应地选取媒体访问控制服务数据单元聚合中的聚合帧个数,另一方面提出一种媒体访问控制协议数据单元聚合机制,该机制规定了聚合时机和聚合长度等;同时,针对由无线信道环境嘈杂性引起带宽下降导致丢包率上升的现象,引入AMPDU聚合情况下的带宽自适应机制。与现有IEEE 802.11ac聚合机制相比,该算法可提高数据帧发送吞吐率,同时又能在带宽下降时减少丢包率,增强数据发送鲁棒性。

关 键 词:聚合MAC服务数据单元  聚合MAC协议数据单元  带宽  保护间隔  吞吐率  
收稿时间:2019-01-14

A Frame Aggregation Implementation Algorithm Based on IEEE 802.11ac Protocol
YANG Yong-peng,LIU Tian-qi,YANG Zhen-zhen.A Frame Aggregation Implementation Algorithm Based on IEEE 802.11ac Protocol[J].Introduction of Educational Technology,2019,18(9):192-195.
Authors:YANG Yong-peng  LIU Tian-qi  YANG Zhen-zhen
Institution:1. College of Computer Science & Software Engineering,Nanjing Vocational College of Information Technology;2. College of Science,Nanjing University of Posts and Telecommunications, Nanjing 210023, China
Abstract:How to improve the efficiency of the MAC layer in the IEEE 802.11ac WLAN protocol standard and the transmission rate of the WLAN is a hot topic in current research. This paper proposes a new frame aggregation implementation algorithm based on the IEEE 802.11ac protocol standard. The algorithm adaptively selects the aggregation mac service data unit (AMSDU) based on the rate selected by the system dynamic rate algorithm; on the other hand, an aggregation mac protocol data unit (AMPDU) mechanism is proposed, which specifies the timing of the aggregation and the length of the aggregation, etc. The complexity of the wireless channel environment causes the bandwidth to drop and the packet loss rate increases. This paper also introduces the bandwidth adaptation mechanism in the case of AMPDU aggregation. Compared with the existing IEEE 802.11ac aggregation mechanism, the algorithm can improve the throughput of data frame transmission, and at the same time reduce the packet loss rate and increase the robustness of data transmission when the bandwidth is reduced.
Keywords:AMSDU  AMPDU  band width  guard interval  throughput rate  
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