User apparatus and transmittal acknowledgement information transmission method
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United States of America Patent
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Apr 16, 2019
Grant Date -
Feb 1, 2018
app pub date -
Feb 17, 2016
filing date -
Feb 20, 2015
priority date (Note) -
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Abstract
A user apparatus configured to communicate with a base station in a mobile communication system that supports carrier aggregation formed by a plurality of cells including a first cell and a second cell that uses a Transmission Time Interval (TTI) length different from a TTI length of the first cell, including a reception unit configured to receive downlink data transmitted from the base station in the second cell, and generate transmittal acknowledgement information for the downlink data; and a transmission unit configured to bundle a plurality of pieces of transmittal acknowledgement information, generated in the reception unit, for a plurality of pieces of downlink data into one piece of transmittal acknowledgement information to transmit the bundled transmittal acknowledgement information to the base station in the first cell.
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