Retransmission method and apparatus for sidelink transmission
Assignee1FINITY Inc.
InventorsJian Zhang, Guorong Li, Pengyu Ji, Xin Wang
Life of this patent
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Abstract
A retransmission method and apparatus for sidelink transmission. The method includes: receiving, by a terminal equipment, downlink control information (DCI) of which CRC being scrambled by an SL-CS-RNTI; and when a dynamic grant resource scheduled by the downlink control information is not used to transmit sidelink retransmission, transmitting indication information via a physical uplink control channel indicated by the downlink control information, the indication information indicating success of sidelink transmission or that a network device is not needed to schedule retransmission.
Claims20
A retransmission apparatus for sidelink transmission, comprising:
- a receiver configured to receive downlink control information of which cyclic redundancy check being scrambled by a sidelink configuration scheduling radio network temporary identifier;
- and
- a transmitter configured to, when it does not transmit a sidelink retransmission on a dynamic grant resource scheduled by the downlink control information, transmit indication information via a physical uplink control channel indicated by the downlink control information, the indication information indicating success of sidelink transmission or that a network device is not needed to schedule retransmission.
A retransmission apparatus for sidelink transmission, configured in a terminal equipment, the apparatus comprising:
- a receiver configured to receive first downlink control information of which cyclic redundancy check being scrambled by a sidelink configuration scheduling radio network temporary identifier;
- a transmitter configured to transmit sidelink retransmission by using a first dynamic grant resource scheduled by the first downlink control information, and in a case where the first downlink control information indicates or provides a first physical uplink control channel, transmit first indication information to a network device via the first physical uplink control channel;
- wherein in a case where second indication information indicates failure of sidelink transmission or that the network device is needed to schedule retransmission via a second physical uplink control channel associated with a configured grant resource, after transmitting the second indication information, the transmitter does not use a configured grant resource to transmit sidelink retransmission.
A retransmission apparatus for sidelink transmission, comprising:
- a receiver configured to receive indication information transmitted by a terminal equipment via a physical uplink control channel associated with a configured grant resource, the indication information being used for indicating failure of sidelink transmission or that a network device is needed to schedule retransmission;
- and
- a transmitter configured to transmit downlink control information of which cyclic redundancy check being scrambled by a sidelink configuration scheduling radio network temporary identifier;
- wherein the downlink control information and a dynamic grant resource are after the physical uplink control channel and before a next configured grant resource applicable to a hybrid automatic repeat request process, and the downlink control information schedules the dynamic grant resource and schedules sidelink retransmission of the hybrid automatic repeat request process.
A retransmission apparatus for sidelink transmission, comprising:
- a transmitter configured to transmit indication information via a physical uplink control channel associated with a configured grant resource, the indication information being used for indicating failure of sidelink transmission or that a network device is needed to schedule retransmission;
- and
- a receiver configured to receive downlink control information of which cyclic redundancy check being scrambled by a sidelink configuration scheduling radio network temporary identifier;
- the transmitter is further configured to transmit sidelink retransmission by using a dynamic grant resource scheduled by the downlink control information, after the physical uplink control channel and before a next configured grant resource applicable to a hybrid automatic repeat request process, wherein the downlink control information schedules sidelink retransmission of the hybrid automatic repeat request process.
Dependencies are inferred from the claim text.