HANDOVER SELECTION STRATEGY FOR MITIGATING THE HIDDEN NODE PROBLEM

摘要

This disclosure relates to a wireless communication network and in particular it relates to a method, performed in a network device 10a in a wireless communication network comprising an access point, of selecting a node 20 for handover to an alternate access point 10b as well as to a node 10a adapted to perform the method. According to one aspect, it presents a method, performed in a network device 10a in a contention based wireless communication network comprising an access point to which access point a number of nodes are connected, of selecting a node for handover to an alternate access point. The method comprises detecting among the connected nodes hidden nodes. The method further comprises analysing, for each identified station if there is at least one alternate access point. When there are several stations that have at least one alternate access point then the method further comprises calculating for each station having at least one alternate access point at least one collision metric, and selecting at least one of the stations having at least one alternate access point for handover to an alternate access point based on the calculated collision metric(s).