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Method and apparatus for estimating a position of a node in a communications network

  • US 8,233,911 B2
  • Filed: 12/16/2009
  • Issued: 07/31/2012
  • Est. Priority Date: 12/16/2009
  • Status: Expired due to Fees
First Claim
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1. A method, comprising:

  • estimating, by a mobile node, a plurality of reference signal time differences between the mobile node and a network node, wherein the plurality of reference signal time difference estimates define a first correlator;

    determining, with the first correlator, a second correlator of reference signal time difference estimates;

    defining the second correlator with the first correlator based on a mean of the plurality of reference signal time difference estimates;

    determining a distribution of the plurality of reference signal time difference estimates;

    grouping clusters of reference signal time difference estimates in the distribution;

    selecting a cluster from the clusters of reference signal time difference estimates, wherein the cluster comprises a reference signal time difference estimate corresponding to the earliest estimated timing in the second correlator; and

    transmitting, by the mobile node, the cluster to the network node for positioning the mobile node in a communications network.

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