Patent ID: 7236477
Filing Date: 2007-06-26
Classification: H04L,H04W

Abstract:
1. A method for performing authenticated handover in a wireless local area network (WLAN) by a mobile station, comprising: while associated with a first access point: deciding to handover to a second access point, the second access point being a neighbor access point of the first access point; upon deciding to handover to the second access point, transmitting a reassociation request to the second access point, the reassociation request including the pairwise master key identifier and an SNonce value; receiving from the second access point a reassociation response including an indication that the second access point has acquired the pairwise master key; calculating a pairwise temporary key based on the pairwise master key, SNonce value, and ANonce value associated with the second access point on the list of ANonce values obtained from the first access point; installing the pairwise temporary key; and commencing service with the second access point using the pairwise temporary key.