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IEEE802.11中MAC子层DCF&PCF的研究与仿真 被引量:3

Study and simulation on DCF&PCF of MAC layer in IEEE802.11
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摘要 无线局域网络(WLAN)以其无可比拟的接入优点迅速得到普及,其传输性能好坏也成为关注的焦点。现在无线局域网络在通信过程中通常选用802.11中MAC子层的DCF&PCF两种工作模式进行,但二者在选择中其传输性能还存在一些差别。在对IEEE802.11中DCF&PCF工作原理和特点进行分析研究之后,以网络负载、接入延时、尝试重传的包数和吞吐量为权衡指标,进行网络仿真并给出了仿真结果。这为进一步分析和选择无线局域网络接入模式打下了基础,并具有一定的现实意义。 Wireless local area network (WLAN) with unparalleled access advantages become popular rapidly in recent years, its transmission performance quality has also become the focus of attention. Now wireless LAN in the communication process usually use the DCF & PCF working models of 802.11, but there are still some differences between their choices of transmission performance. After analyzing DCF & PCF working principles and characteristics of 802.11, simulation results is presented by tradeoff standard of entire network energy cost, access delay, packages and throughput ofretransmission. It has some practical significance for further analysis and selection of wireless LAN access models.
出处 《计算机工程与设计》 CSCD 北大核心 2008年第5期1096-1099,共4页 Computer Engineering and Design
关键词 无线局域网 媒体接入控制 分布式协调功能 集中时协调功能 仿真 wireless local area network (WLAN) media access control (MAC) distributed coordination function (DCF) point coordination function (PCF) simulation
作者简介 陈旭龙(1976-),男,新疆乌鲁木齐人,硕士,研究方向为指挥控制系统与分布交互仿真:E-mail:xulongehen@126.com 彭宇行(1963-),男,湖南长沙人,研究员,博士生导师,研究方向为指挥控制系统、并行与分布式处理、流媒体技术等。
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