Control channel signalling for triggering the independent transmission of a channel quality indicator

CAFC
  • US 8,385,239 B2
  • Filed: 04/02/2009
  • Issued: 02/26/2013
  • Est. Priority Date: 05/06/2008
  • Status: Active Grant
First Claim
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1. A method comprising the following steps performed by a mobile terminal:

  • receiving a control channel signal from a base station, wherein the control channel signal comprises a Modulation and Coding Scheme (MCS) Index, information on resource blocks used for a transmission from the mobile terminal to the base station, and a channel quality indicator trigger for triggering a transmission of an aperiodic channel quality indicator report to the base station,in case when the channel quality indicator trigger is set and the control channel signal indicates a determined value of the MCS Index and also indicates a number of resource blocks that is smaller than or equal to a determined number of resource blocks, transmitting the aperiodic channel quality indicator report to the base station without multiplexing the aperiodic channel quality indicator report, with data to be transmitted by the mobile terminal via an Uplink Shared Channel (UL-SCH), andin case (a) when the channel quality indicator trigger is set and the control channel signal does not indicate the determined value of the MCS Index, or in case (b) when the channel quality indicator trigger is set and the control channel does not indicate a number of resource blocks that is smaller than or equal to the determined number of resource blocks, transmitting the aperiodic channel quality indicator report to the base station while multiplexing the aperiodic channel quality indicator report with data to be transmitted by the mobile terminal via the UL-SCH.

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