Patent ID: 8290496

Claim:
A method of identifying a set of cooperator and demodulator location measuring units (LMUs) for use in locating a mobile device in a Code Division Multiple Access (CDMA)-based wireless communications network (WCN), wherein the demodulator LMUs perform full or partial demodulation of an uplink signal from the mobile device and the cooperator LMUs receive the uplink signal from the mobile device without performing demodulation, comprising: obtaining data identifying an active set of base stations through which active communication is established between the mobile device and the WCN; based on the active set, identifying a proxy serving cell; based on the proxy serving cell, identifying at least one cooperator LMU and at least one demodulator LMU; employing the at least one cooperator LMU and the at least one demodulator LMU to collect signal data from the mobile device; and employing the signal data to locate the mobile device; wherein said identifying a proxy serving cell comprises selecting a base station having an associated demodulator LMU list that contains all of the base stations of the active set, and when no base station's demodulator LMU list contains all of the base stations of the active set, selecting a base station with a greatest number of base stations in the active set in its demodulator LMU list; and wherein when more than one base station includes said greatest number in the active set, the proxy serving cell is selected from among the base stations including said greatest number in the active set using a predetermined selection method.