Method and device for transmitting uplink control information
AssigneeChina Academy of Telcommunications Technology
InventorsQianqian Si, Xuejuan Gao, Xueming Pan, Jiaqing Wang
Life of this patent
Estimating the term…
Abstract
Disclosed are a method and device for transmitting uplink control information, which are used for realizing a UE performing switching transmission of an uplink control channel on subframes and carriers, so that if the UE fails to pre-empt a resource on an unlicensed carrier, the UE may switch to the other carriers for transmission or continue to try to perform LBT in subsequent subframes, so as to ensure the timely and correct transmission of the uplink control information. The method comprises: a UE determining a physical uplink control channel (PUCCH) switching carrier group and the maximum feedback delay.
Claims17
A method for transmitting uplink control information, comprising:
- determining, by a user equipment, a Physical Uplink Control Channel (PUCCH) switching carrier group and a maximum feedback delay, wherein the PUCCH switching carrier group comprises one licensed primary carrier and N unlicensed carriers, N is an integer more than or equal to 1, and end time of the maximum feedback delay is latest time when the user equipment transmits feedback information;
- performing, by the user equipment, Listen Before Talk (LBT) detection for the unlicensed carriers in the PUCCH switching carrier group during the maximum feedback delay;
- and
- when the LBT detection succeeds, selecting one of the unlicensed carriers to transmit uplink control information;
- or
- when the LBT detection fails, transmitting the uplink control information over the licensed primary carrier.
A method for transmitting uplink control information, comprising:
- determining, by a base station, a Physical Uplink Control Channel (PUCCH) switching carrier group and a maximum feedback delay, wherein the PUCCH switching carrier group comprises one licensed primary carrier and N unlicensed carriers, N is an integer more than or equal to 1, and end time of the maximum feedback delay is latest time when a user equipment transmits feedback information;
- and
- performing, by the base station, Discontinuous Transmission (DTX) detection for the unlicensed carriers in the PUCCH switching carrier group during the maximum feedback delay;
- and
- when the DTX detection succeeds, receiving uplink control information over an unlicensed carrier for which the DTX detection succeeds;
- or
- when the DTX detection fails, receiving the uplink control information over the licensed primary carrier.
An apparatus for transmitting uplink control information, comprising:
- a transmitter;
- a memory storing at least one instruction;
- and
- a processor configured to execute the at least one instruction to:
- determine a Physical Uplink Control Channel (PUCCH) switching carrier group and a maximum feedback delay, wherein the PUCCH switching carrier group comprises one licensed primary carrier and N unlicensed carriers, N is an integer more than or equal to 1, and end time of the maximum feedback delay is latest time when the apparatus transmits feedback information;
- perform Listen Before Talk (LBT) detection for the unlicensed carriers in the PUCCH switching carrier group during the maximum feedback delay;
- and
- when the LBT detection succeeds, select one of the unlicensed carriers to transmit uplink control information;
- or when the LBT detection fails, control the transmitter to transmit the uplink control information over the licensed primary carrier.
Dependencies are inferred from the claim text.