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Sounding mechanism and configuration under carrier aggregation

  • US 9,270,433 B2
  • Filed: 08/04/2014
  • Issued: 02/23/2016
  • Est. Priority Date: 06/18/2010
  • Status: Active Grant
First Claim
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1. A method comprising:

  • transmitting a plurality of sets of UE-specific sounding reference signal (SRS) parameters associated with aperiodic SRS (ap-SRS) transmission over different carriers to a user equipment via upper layer messaging in a multi-carrier wireless communication system, wherein the plurality of sets of UE-specific SRS parameters are jointly signaled together via a single radio resource control (RRC) message;

    determining a selected set of UE-specific SRS parameters and an indicated carrier for the UE; and

    transmitting a grant to the UE over a primary carrier, wherein the grant comprises information for the UE to send an aperiodic SRS (ap-SRS) over the indicated carrier using the selected set of UE-specific SRS parameters, and wherein the grant further comprises a carrier indicator field indicating the indicated carrier.

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