Method and apparatus for making HARQS in carrier aggregation systems
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United States of America Patent
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Dec 25, 2018
Grant Date -
Jan 11, 2018
app pub date -
Sep 21, 2017
filing date -
Apr 23, 2012
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Abstract
A method for performing a hybrid automatic repeat request (HARQ) process, the method performed by a user equipment (UE) and includes receiving data in a first subframe of a secondary cell; and transmitting acknowledgement/negative-acknowledgement (ACK/NACK) information for the data in a second subframe of a primary cell, wherein the primary cell uses a frame comprising at least one downlink subframe and at least one uplink subframe according to an uplink-downlink configuration, wherein the secondary cell uses a frame comprising consecutive downlink subframes, and wherein a maximum number of HARQ processes for the secondary cell is dependent on the uplink-downlink configuration of the primary cell.
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