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Method and apparatus for determining the location of a remote station in a CDMA communication network

  • US 6,188,354 B1
  • Filed: 03/29/1999
  • Issued: 02/13/2001
  • Est. Priority Date: 03/29/1999
  • Status: Expired due to Term
First Claim
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1. A method to determine a location of a remote station in a synchronous communications network, comprising:

  • receiving a network time signal at a remote station, wherein receipt of the network time signal establishes a reference time and the network time signal is a reference pilot signal which includes a zero phase pilot PN sequence transmitted from a base station in the communication network;

    receiving a plurality of signals at the remote station, the plurality of signals comprising at least a first signal transmitted from a global positioning network (GPS), the at least a first signal being synchronized with the network time signal;

    determining a time difference for the each of the plurality of signals; and

    determining a location for the remote station using the time difference of arrivals.

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