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US 12,593,331 B2Granted
Method and device for receiving sidelink retransmission packet in NR V2X
AssigneeLG Electronics Inc.
InventorsGiwon Park, Seoyoung Back, Jongyoul Lee
Life of this patent
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Abstract
Provided, according to one embodiment of the present disclosure, is a method for a first device carrying out sidelink communication. The method comprises the steps of: starting a first timer associated with a PSFCH resource on the basis that sidelink HARQ feedback information is not transmitted to a second device through the PSFCH resource on the basis of a first priority associated with the sidelink HARQ feedback information; on the basis that the first timer has expired, starting a second timer associated with a sidelink HARQ retransmission packet for a PSSCH or SCI; and receiving the sidelink HARQ retransmission packet from the second device after the second timer starts.
Claims15
A method comprising:
- receiving, from a second device, first sidelink control information (SCI) for scheduling of a physical sidelink shared channel (PSSCH) through a physical sidelink control channel (PSCCH);
- receiving, from the second device, sidelink data and second SCI including sidelink transmission information associated with a sidelink process through the PSSCH;
- determining a physical sidelink feedback channel (PSFCH) resource for transmitting sidelink hybrid automatic repeat request (HARQ) feedback information related to the reception through the PSSCH, based on a slot index related to the PSSCH and an index of a subchannel;
- starting a sidelink (SL) discontinuous reception (DRX) HARQ round trip time (RTT) timer related to the sidelink process, based on the sidelink HARQ feedback information being not transmitted through the PSFCH resource due to prioritization between the sidelink communication and an uplink transmission;
- starting an SL DRX retransmission timer for a sidelink retransmission related to the sidelink process, based on expiry of the SL DRX HARQ RTT timer;
- and
- receiving the sidelink retransmission from the second device based on the SL DRX retransmission timer being running.
4 more elements
A first device comprising:
- one or more processors;
- one or more transceivers;
- and
- one or more memories
- connected to the one or more processors and storing instructions,
- wherein the instructions, based on being executed by the one or more processors, cause the first device to:
- receive, from a second device, first sidelink control information (SCI) for scheduling of a physical sidelink shared channel (PSSCH) through a physical sidelink control channel (PSCCH);
- receive, from the second device, sidelink data and second SCI including sidelink transmission information associated with a sidelink process through the PSSCH;
- determine a physical sidelink feedback channel (PSFCH) resource for transmitting sidelink hybrid automatic repeat request (HARQ) feedback information related to the reception through the PSSCH, based on a slot index related to the PSSCH and an index of a subchannel;
- start a sidelink (SL) discontinuous reception (DRX) HARQ round trip time (RTT) timer related to the sidelink process, based on the sidelink HARQ feedback information being not transmitted through the PSFCH resource due to prioritization between the sidelink communication and an uplink transmission;
- start an SL DRX retransmission timer for a sidelink retransmission related to the sidelink process, based on expiry of the SL DRX HARQ RTT timer;
- and
- receive the sidelink retransmission from the second device based on the SL DRX retransmission timer being running.
10 more elements
A processing device adapted to control a first device, the processing device comprising:
- one or more processors;
- and
- one or more memories connected to the one or more processors and storing instructions,
- wherein the instructions, based on being executed by the one or more processors, cause the first device to:
- receive, from a second device, first sidelink control information (SCI) for scheduling of a physical sidelink shared channel (PSSCH) through a physical sidelink control channel (PSCCH);
- receive, from the second device, sidelink data and second SCI including sidelink transmission information associated with a sidelink process through the PSSCH;
- determine a physical sidelink feedback channel (PSFCH) resource for transmitting sidelink hybrid automatic repeat request (HARQ) feedback information related to the reception through the PSSCH, based on a slot index related to the PSSCH and an index of a subchannel;
- start a sidelink (SL) discontinuous reception (DRX) HARQ round trip time (RTT) timer related to the sidelink process, based on the sidelink HARQ feedback information being not transmitted through the PSFCH resource due to prioritization between the sidelink communication and an uplink transmission;
- start an SL DRX retransmission timer for a sidelink retransmission related to the sidelink process, based on expiry of the SL DRX HARQ RTT timer;
- and
- receive the sidelink retransmission from the second device based on the SL DRX retransmission timer being running.
8 more elements
Dependencies are inferred from the claim text.