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Multiple carrier indication and downlink control information interaction

  • US 9,351,293 B2
  • Filed: 09/08/2010
  • Issued: 05/24/2016
  • Est. Priority Date: 09/11/2009
  • Status: Active Grant
First Claim
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1. A method for wireless communication performed by a user equipment (UE), comprising:

  • receiving a plurality of component carriers configured for a wireless communication device, the plurality of component carriers comprising a plurality of search spaces comprising one or more common search spaces and a plurality of user- specific search spaces;

    receiving a cross-carrier configuration comprising an indicator of cross-carrier operation for a first component carrier of the plurality of component carriers; and

    determining, based on the cross-carrier configuration, whether control information for the UE is present in a control information format carried on a second component carrier by decoding the plurality of search spaces according to a first set of control information formats associated with the one or more common search spaces and a second set of control information formats associated with the plurality of user-specific search spaces, the first set of control information formats including at least a first downlink control information (DCI) format without a carrier indicator and the second set of control information formats including at least the first DCI format with a carrier indicator.

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