Patent ID: 8200194

Claim:
A method for alleviating deadzone effect of a Femtocell network system, said Femtocell network system comprising a plurality of femto access points (FAPs) and at least a FAP-gateway (FAP-GW), and being co-existent with a universal mobile telecommunication system (UMTS) network in a mobile communication environment; said method comprising: pre-configuring a minimum transmission power for each of said plurality of FAPs; when an inadmissible visiting user equipment (UE) executes a location update or a handoff process to a closed FAP, said at least a FAP-GW performing user authentication and estimating probable existence of a deadzone of said closed FAP; and before said inadmissible visiting UE reaches said deadzone of said closed FAP, repeatedly decreasing transmission power of said closed FAP so as to allow said inadmissible visiting UE to receive signals and messages from said UMTS network until said transmission power of said closed FAP reaches said minimum transmission power corresponding to said closed FAP.