Patent ID: 7450556

Claim:
A system for communicating data signals using a spread spectrum cellular network, comprising: a plurality of base stations coupled to the cellular network, each base station of the plurality of base stations including means for transmitting a pilot signal sequence; and a mobile unit coupled to the cellular network and assigned to an active base station that is one of the plurality of base stations, the mobile unit including: a) means for receiving a signal of a target base station that is another of the plurality of base stations; and b) means for determining an interference density to the target base station from the received signal including: i) means for selecting a code sequence that is at least quasi-orthogonal to all Orthogonal code sequences currently employed by the target base station, ii) means for synchronizing the selected code sequence with an Orthogonal code sequence boundary of the target base station's pilot sequence, iii) means for correlating the received signal with a corresponding P/N sequence of the target base station and also with the selected code sequence, and iv) means for determining an energy of the P/N correlated, selected code correlated received signal.