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Auxiliary FL MIMO pilot transmission in 1XEV-DO

  • US 8,077,654 B2
  • Filed: 08/21/2006
  • Issued: 12/13/2011
  • Est. Priority Date: 08/22/2005
  • Status: Active Grant
First Claim
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1. A method of providing auxiliary pilots for transmission from a base station in a wireless communication system with MIMO and non-MIMO users, comprising:

  • allocating a portion of total available data transmission power for transmission of at least one auxiliary multiple-input, multiple-output(MIMO) pilot during a data segment in a transmission time slot; and

    transmitting the at least one auxiliary MIMO pilot simultaneously with a primary pilot to both the MIMO and the non-MIMO users on one or more unused Walsh codes during the transmission time slot, wherein the at least one auxiliary MIMO pilot only supports the MIMO users in the wireless communication system.

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