Patent ID: 7212820
Filing Date: 2007-05-01
Classification: H04B,H04W

Abstract:
1. A method of mobile-assisted handover in a wireless network comprising: communicating with a mobile station from a first base station; receiving, at a network controller, one or more data messages sent from said mobile station to said first base station that indicate relative signal strengths of at least a second base station operating on a same frequency as said first base station; determining, by said network controller, to handover said mobile station from said first base station to said second base station based on said signal strengths; and handing over said mobile station from said first base station to said second base station based on said determination by said network controller; wherein said mobile station communicates with said first base station using a first CDMA spreading code before and during handover, and wherein said mobile station communicates with said second base station using a second CDMA spreading code during and after handover; and sending a control message from said first base station to said mobile station that identifies said second CDMA spreading code to support handover of said mobile station.