Method, Base Station, and User Equipment for Feeding Back ACK/NACK Information for Carrier Aggregation
AssigneeHuawei Technologies Co., Ltd.
InventorsXiaobo Chen, Chaojun Li
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Abstract
The present invention provides a method, a base station, and a user equipment for feeding back ACK/NACK information for carrier aggregation. The method includes: configuring a common field preset in DCI as at least one type of command field related to ACK/NACK feedback of at least two types of command fields related to ACK/NACK feedback, where the common field can be configured as the command fields related to ACK/NACK feedback; and sending the DCI to a user equipment, so that the user equipment feeds back ACK/NACK information according to the DCI. The present invention may realize backward compatibility of the ACK/NACK information feedback with an LTE system in carrier aggregation.
Claims21
1-16. (canceled)
A method for feeding back Acknowledgement/Negative-acknowledgement (ACK/NACK) information for carrier aggregation, the method comprising:
- configuring a common field preset in Downlink Control Information (DCI) as at least one type of command field related to ACK/NACK feedback, wherein the common field can be configured as the at least two types of command fields related to ACK/NACK feedback;
- and
- sending the DCI to a user equipment, so that the user equipment feeds back the ACK/NACK information according to the DCI.
A method for feeding back Acknowledgement/Negative-acknowledgement (ACK/NACK) information for carrier aggregation, the method comprising:
- receiving downlink control information (DCI) which is sent by a base station and transmitted by a downlink component carrier;
- and
- feeding back ACK/NACK information according to a command field which is related to ACK/NACK feedback and configured in a common field preset in the DCI, wherein the common field can be configured as at least two types of command fields related to ACK/NACK feedback.
A base station, comprising:
- a configuring module, configured to configure a common field preset in a downlink control information (DCI) as at least one type of command field related to Acknowledgement/Negative-acknowledgement (ACK/NACK) feedback, wherein the common field can be configured as the at least two types of command fields related to ACK/NACK feedback;
- and
- a sending module, configured to send the DCI to a user equipment, so that the user equipment feeds back ACK/NACK information according to the DCI.
A user equipment, comprising:
- a receiving module, configured to receive downlink control information (DCI) that is sent by a base station and transmitted by a downlink component carrier;
- and
- a feedback module, configured to feed back Acknowledgement/Negative-acknowledgement (ACK/NACK) feedback information according to a command field that is related to ACK/NACK feedback and configured in a common field preset in the DCI, wherein the common field can be configured as at least one type of command field related to ACK/NACK feedback of at least two types of command fields related to ACK/NACK feedback.
Dependencies are inferred from the claim text.