Patent ID: 6526280
Filing Date: 2003-02-25
Classification: H04W

Abstract:
A system for performing a soft hand-off between base transceiver stations under control of different base transceiver station controllers, said system comprising:a first base transceiver station of which a mobile station subjected to said soft hand-off is under control before said soft hand-off; a second base transceiver station of which said mobile station is under control after said soft hand-off; a first base transceiver station controller which controls said first base transceiver station; a second base transceiver station controller which controls said second base transceiver station; and a physical channel which connects said first base transceiver station controller with said second base transceiver station controller; wherein a first upstream data packet is transmitted from said mobile station to a codec in said first base transceiver station controller via said first base transceiver station; wherein a second upstream data packet is transmitted from said mobile station to said codec via said second base transceiver station, said second base transceiver station controller, and said physical channel; wherein a first downstream data packet is transmitted from said codec to said mobile station via said first base transceiver station; and wherein a second down stream data packet is transmitted from said codec to said mobile station via said physical channel, said second base transceiver station controller, and said second base transceiver station.