摘要： BSS切换产生的时延和抖动会严重影响实时语音等实时业务的性能。为了提高用户获得的网络性能，该文提出一种基于动态阈值的切换触发机制，可以在保证切换灵敏度的前提下解决频繁切换的问题，在此基础上设计实现一种基于动态Cache机制的快速切换算法。实验结果表明，该算法可有效地减小切换时延，性能优于静态Cache机制。
关键词:
无线局域网,
IEEE 802.11协议,
快速切换
Abstract: Real-time voice service is negatively influenced by the delay and jitter caused by Basic Service Set(BSS) handoff. This paper proposes a new handoff triggering mechanism with dynamic threshold, which is sensitive to signal variance while eliminating the Ping-Pong handoff effect. In order to achieve higher network performance, a fast handoff algorithm based on dynamic Cache is presented. Experimental result demonstrates that the algorithm effectively reduces handoff latency and outperforms other algorithms based on static Cache.
Key words:
WLAN,
IEEE 802.11 protocol,
fast handoff
中图分类号:
倪维国;董永强;张 聪;. 基于动态Cache的无线局域网快速切换算法[J]. 计算机工程, 2009, 35(2): 89-91.
NI Wei-guo; DONG Yong-qiang; ZHANG Cong;. Fast Handoff Algorithm for WLAN Based on Dynamic Cache[J]. Computer Engineering, 2009, 35(2): 89-91.