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Methods and apparatus for providing base station position information and using position information to support timing and/or frequency corrections

  • US 8,798,638 B2
  • Filed: 08/31/2005
  • Issued: 08/05/2014
  • Est. Priority Date: 07/20/2005
  • Status: Expired due to Fees
First Claim
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1. A wireless terminal comprising:

  • a receiver for receiving, over an airlink, a signal from a base station communicating a base station determined current base station position;

    a relative distance determination module for determining the relative distance between the base station and the wireless terminal based on the communicated current base station position;

    a timing synchronization module for performing a timing adjustment operation as a function of the determined relative distance;

    a relative velocity determination module for determining the relative velocity of said wireless terminal relative to said base station;

    a Doppler shift determination module coupled to said relative velocity determination module for outputting a Doppler shift correction signal, the Doppler shift correction signal based on the determined relative velocity of said wireless terminal relative to said base station; and

    a combining module for generating uplink signals for transmission from said wireless terminal, the uplink signals comprising the Doppler shift correction signal based on the determined relative velocity of said wireless terminal relative to said base station combined with a baseband signal or a carrier frequency.

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