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Determination of positions of wireless transceivers to be added to a wireless communication network

  • US 9,091,746 B2
  • Filed: 06/29/2011
  • Issued: 07/28/2015
  • Est. Priority Date: 07/01/2010
  • Status: Expired due to Fees
First Claim
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1. A method of determining unknown positions of wireless transceivers to be added to a wireless communication network, the method comprising:

  • obtaining a plurality of time difference of arrival (TDOA) values comprising a plurality of unknown-unknown TDOA values and a plurality of unknown-known TDOA values;

    wherein each unknown-unknown TDOA value identifies a difference between a pair of measurements made at a first unknown position, the pair of measurements being of times of arrival of wireless signals transmitted from a pair of additional unknown positions;

    wherein each unknown-known TDOA value identifies a difference between another pair of measurements, with one measurement in said another pair being of time of arrival of a wireless signal transmitted from one of the unknown positions and another measurement in said another pair being of time of arrival of an additional wireless signal transmitted from a known position;

    solving a set of simultaneous equations, to identify at least the unknown positions, based on at least (a) the plurality of TDOA values and (b) a plurality of known positions including said known position; and

    storing in a memory, identifications of said unknown positions obtained by said solving.

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