Patent ID: 7864736

Claim:
A method of roaming in a packet communication system during a call, comprising: a) in a scanning process: i) scanning for one or more available access points (AP's); and ii) prioritizing the one or more available AP's into a prioritized AP list based on at least one criterion in addition to a received signal strength indicator (RSSI); and b) in a connection process: i) making a decision to roam from an existing AP to a new AP; and ii) connecting to the new AP, wherein the new AP is selected from the prioritized AP list, and wherein connecting to the new AP, comprises: determining if a new IP address will need to be assigned to a client; if the new IP address does not need to be assigned to the client, then reassociating the client to the new AP; and if the new IP address does need to be assigned to the client, then: putting the call in a hold mode; reassociating the client to the new AP; creating the new IP address for the client; executing a SIP reinvite command; and taking the call out of the hold mode.