Design of seamless handover between APs based on traffic load in SDWN

摘要

Software Defined Network(SDN) decouples control plane and data plane as a new type of network architecture. Centralized control is beneficial to obtain global network topology quickly and provides greater convenience for seamless handover between AP. In view of the handover between AP in Software Defined Wireless Network (SDWN, this article mainly researched in SDWN client’s seamless handover between AP. Considering the influence of traffic load for the AP performance, this paper proposed a design of Inter-AP handover scheme based on traffic load perception and a seamless handover algorithm between AP based on traffic load perception in SDWN. The design by considering the wireless client received signal strength (RSSI) and traffic load on the AP can effectively solve the problem of load imbalance between AP. Finally, applying the scheme on a small test platform, and shows that the scheme is feasible. By compared with the traditional handover algorithm based on RSSI, the handover algorithm is proved that it can effectively enhance the network throughput.