基于CAPWAP的WLAN切换式负载均衡算法

Handoff Algorithm of Load Balance Based on CAPWAP in WLAN

提出了一种基于CAPWAP的WLAN切换式负载均衡算法,该算法中各WTP能够相互交换负载状态信息,当出现负载差异时,把超载WTP服务范围内的终端切换到轻载WTP上,以减少各个WTP之间的负载差异,从而实现WLAN负载均衡.经仿真实验,该算法能够平衡各个WTP之间的负载,提高网络的系统吞吐量.

This paper puts forward a CAPWAP-based handoff algorithm of load balance in WLAN, in which each WTP can exchange load state message with the other. When the load of WTPS shows bigger differences, the overloaded WTP forces the handoff of some stations to be associated with under-loaded WTP in order to reduce the load difference, and to realize load balancing of WLAN. The simulation results indicate that each WTP＇ s load can be balanced and that the system throughput can be improved dramatically.