Achieving Seamless IP Handover and Dynamic Neighborhood Discovery in IEEE 802.11 Networks

摘要

To achieve seamless layer 3 handover, mobile nodes must be able to perform movement detection and neighborhood candidate access routers discovery quickly and efficiently. In this paper, we show how to extend the IEEE 802.11 management frames to carry extensible application-specific Information Elements, which allow access points to advertise the capabilities information of its associated network/provider and also to improve movement detection. We show that mobile nodes can dynamically discover neighboring candidate access routers or networks more quickly and efficiently, and also to obtain valuable capabilities information so as to select the 'best' target access router to initiate seamless handover. Lastly, we illustrate through NS-2 simulations, the performance evaluation for our proposed scheme, which attempt to achieve faster movement detection and neighboring Access Router/Access Point discovery/selection.