Uplink control information transmitting method and apparatus
An uplink control information (UCI) transmitting method is provided. In this method, a user equipment (UE) receives a configuration signaling, determines a candidate physical uplink control channel (PUCCH) set corresponding to an acknowledgement (ACK)/negative acknowledgement (NACK) resource indication (ARI), receives a downlink grant signaling and downlink data corresponding to the downlink grant signaling, generates hybrid automatic repeat request ACK (HARQ-ACK) bits, performs processing for UCI bits including HARQ-ACK, determines the PUCCH used to transmit the UCI bits in the candidate PUCCH set according to an ARI in the downlink grant signaling, and transmits the UCI bits on the determined PUCCH. The present disclosure further provides an aperiodic channel state information (A-CSI) transmitting method. In this method, a UE receives an uplink grant signaling, determines whether an A-CSI report is triggered according to a CSI request field in the uplink grant signaling, determines a CSI process to be updated after determining that the A-CSI report is triggered, and transmits A-CSI on an uplink component carrier (CC) carrying the A-CSI report.
1. A method by a user equipment (UE), the method comprising:
receiving a configuration signal;
receiving a downlink grant signal and downlink data corresponding to the downlink grant signal;
generating a hybrid automatic repeat request ACK (HARQ-ACK);
identifying whether a total number of bits of uplink control information including the HARQ-ACK is more than 22;
if the total number of bits of the uplink control information is more than 22, identifying a first candidate physical uplink control channel (PUCCH) resources set corresponding to a first predetermined PUCCH format, based on the configuration signal;
if the total number of bits of the uplink control information is not more than 22, identifying a second candidate physical uplink control channel (PUCCH) resources set corresponding to a second predetermined PUCCH format, based on the configuration signal;
determining PUCCH resources among the identified first or second candidate PUCCH resources set, based on a value in a transmission power control (TPC) field in the downlink grant signal; and
transmitting the uplink control information on the determined PUCCH resources.
2. The method of claim 1 , wherein the uplink control information further includes a scheduling request and a periodic channel state information (CSI) report.
3. The method of claim 1 , further comprising:
if no PUCCH resources is determined for transmitting the uplink control information based on the value in the TPC field, identifying resources configured for transmitting a periodic CSI report; and
transmitting the uplink control information including the periodic CSI report using the resources.
4. The method of claim 3 , further comprising:
receiving a higher layer signal to configure the resources on which the periodic CSI report is transmitted.
5. An apparatus, comprising:
a transceiver; and
at least one processor configured to:
receive a configuration signal,
receive a downlink grant signal and downlink data corresponding to the downlink grant signal,
generate a hybrid automatic repeat request ACK (HARQ-ACK), identify whether a total number of bits of uplink control information including the HARQ-ACK is more than 22,
if the total number of bits of the uplink control information is more than 22, identify a first candidate physical uplink control channel (PUCCH) resources set corresponding to a first predetermined PUCCH format, based on the configuration signal,
if the total number of bits of the uplink control information is not more than 22, identify a second candidate physical uplink control channel (PUCCH) resources set corresponding to a second predetermined PUCCH format, based on the configuration signal,
determine PUCCH resources among the identified first or second candidate PUCCH resources set based on a value in a transmission power control (TPC) field in the downlink grant signal,
transmit the uplink control information on the determined PUCCH resources.
6. The apparatus of claim 5 , wherein the uplink control information further includes a scheduling request and a periodic channel state information (CSI) report.
7. The apparatus of claim 5 , wherein the at least one processor is further configured to:
if no PUCCH resources is determined for transmitting the uplink control information based on the value in the TPC field, identify resources configured for transmitting a periodic CSI report; and
transmit the uplink control information including the periodic CSI report using the resources.
8. The apparatus of claim 7 , wherein the at least one processor is further configured to: receive a higher layer signal to configure the resources on which the periodic CSI report is transmitted.