Method and device for transmitting and receiving control signal
AssigneeLG Electronics Inc.
InventorsSuckchel Yang, Yunjung Yi, Joonkui Ahn
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Abstract
The present invention relates to a method and device for transmitting and receiving a control signal, and the method includes: receiving control information including scheduling information for data transmission and receipt through higher layer signaling; and receiving a trigger signal triggering data scheduling on a terminal using the scheduling information, wherein the trigger signal may be received through a physical channel that carries a hybrid automatic repeat request (HARQ)-acknowledgment (ACK) response for uplink data transmission.
Claims10
A method of performing data communication by a user equipment (UE), the method comprising:
- receiving scheduling information through a radio resource control (RRC) layer signaling, the scheduling information including resource allocation (RA) information for the data communication, modulation and coding scheme (MCS) information, and transport block (TB) size information;
- and
- receiving, based on a preset resource index, a hybrid automatic repeat request (HARQ)-acknowledgement (ACK) signal through a physical HARQ indicator channel (PHICH);
- and
- when the PHICH is received and the HARQ-ACK signal indicates ACK, performing a physical uplink shared channel (PUSCH) transmission or a physical downlink shared channel (PDSCH) reception based on the RA information, the MCS information, and the TB size information received through the RRC layer signaling,
- wherein a physical downlink control channel (PDCCH) is omitted for the PUSCH transmission and the PDSCH reception,
- wherein the user equipment does not perform any operation for the PUSCH transmission and the PDSCH reception when the HARQ-ACK signal indicates negative acknowledgement (NACK),
- wherein the scheduling information comprises downlink scheduling information or uplink scheduling information, and
- wherein one of the PDSCH reception based on the downlink scheduling information or the PUSCH transmission based on the uplink scheduling information is performed when the preset resource index is independently allocated for the PDSCH reception and the PUSCH transmission and the HARQ-ACK signal indicates ACK.
A user equipment (UE) for performing data communication, the UE comprising:
- a radio frequency (RF) unit;
- and
- a processor, wherein the processor is configured to:
- receive scheduling information through a radio resource control (RRC) layer signaling through the RF unit, the scheduling information including resource allocation (RA) information for the data communication, modulation and coding scheme (MCS) information, and transport block (TB) size information, and
- receive, based on a preset resource index, a hybrid automatic repeat request (HARQ)-acknowledgement (ACK) signal through a physical HARQ indicator channel (PHICH);
- and
- when the PHICH is received and the HARQ-ACK signal indicates ACK, perform a physical uplink shared channel (PUSCH) transmission or a physical downlink shared channel (PDSCH) reception based on the RA information, the MCS information, and the TB size information received through the RRC layer signaling,
- wherein a physical downlink control channel (PDCCH) is omitted for the PUSCH transmission and the PDSCH reception,
- wherein the user equipment does not perform any operation for the PUSCH transmission and the PDSCH reception when the HARQ-ACK signal indicates negative acknowledgement (NACK),
- wherein the scheduling information comprises downlink scheduling information or uplink scheduling information, and
- wherein one of the PDSCH reception based on the downlink scheduling information or the PUSCH transmission based on the uplink scheduling information is performed when the preset resource index is independently allocated for the PDSCH reception and the PUSCH transmission and the HARQ-ACK signal indicates ACK.
Dependencies are inferred from the claim text.