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Method and system for determining position of a mobile terminal utilizing time of arrival calculation in combination with a time difference of arrival calculation

  • US 7,155,237 B2
  • Filed: 09/24/2001
  • Issued: 12/26/2006
  • Est. Priority Date: 09/23/2000
  • Status: Expired due to Term
First Claim
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1. A method of determining a position of a mobile radio terminal arranged for communication with a plurality of base stations, comprising:

  • employing exactly one Time Of Arrival calculation in combination with a Time Difference Of Arrival calculation, the combined Time Of Arrival and Time Difference Of Arrival calculations performed on signals transmitted in a downlink communication channel from the base stations to the mobile radio terminal, andreceiving sector information, including which sector of a cell the mobile radio terminal is located, whereby the position of the mobile radio terminal is determinable by signals from two of the base stations including the sector information, wherein the Time Of Arrival calculation is performed exclusively on signals received from the base station with which the mobile radio terminal is in registration.

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