Systems and methods for coverage enhancement in non terrestrial network
Presented are systems and methods for coverage enhancement in non-terrestrial networks (NTN). A wireless communication device may determine a set of one or more resources to use for indicating information for physical uplink control channel (PUCCH) repetition of msg4 hybrid automatic repeat request acknowledgement (HARQ-ACK) transmission. The wireless communication device may send a msg1 transmission using the set of one or more resources, to indicate the information for the PUCCH repetition, to a wireless communication node.
1 . A method comprising:
sending, by a wireless communication device to a wireless communication node, a msg3 comprising an indication that the wireless communication device supports physical uplink control channel (PUCCH) repetition;
receiving, by the wireless communication device from the wireless communication node, at least one repetition number for the PUCCH repetition of msg4 hybrid automatic repeat request acknowledgement (HARQ-ACK) transmission, wherein:
when the at least one repetition number comprises a plurality of repetition numbers, the wireless communication device selects a repetition number from the plurality of repetition numbers according to an indication received via a downlink control information (DCI) signaling for msg4;
when the at least one repetition number comprises only one repetition number, the wireless communication device uses the only one repetition number for the PUCCH repetition; and
transmitting, by the wireless communication device to the wireless communication node, the msg4 HARQ-ACK with the PUCCH repetition.
2 . The method of claim 1 , comprising:
receiving, by the wireless communication device from the wireless communication node, the indication of the repetition number via a system information block (SIB) broadcast.
3 . A wireless communication device, comprising:
at least one processor configured to:
send, via a transceiver to a wireless communication node, a msg3 comprising an indication that the wireless communication device supports physical uplink control channel PUCCH) repetition;
receive, via the transceiver from the wireless communication node, at least one repetition number for PUCCH repetition of msg4 hybrid automatic repeat request acknowledgement (HARQ-ACK) transmission, wherein:
when the at least one repetition number comprises a plurality of repetition numbers, the wireless communication device selects a repetition number from the plurality of repetition numbers according to an indication received via a downlink control information (DCI) signaling for msg4;
when the at least one repetition number comprises only one repetition number, the wireless communication device uses the only one repetition number for the PUCCH repetition; and
transmit, via the transceiver to the wireless communication node, the msg4 HARQ-ACK with the PUCCH repetition.
4 . The wireless communication device of claim 3 , wherein the at least one processor is configured to:
receive, via the transceiver from the wireless communication node, the at least one repetition number via a system information block (SIB) broadcast.
5 . A method comprising:
receiving, by a wireless communication node from a wireless communication device, a msg3 comprising an indication that the wireless communication device supports physical uplink control channel (PUCCH) repetition;
transmitting, by the wireless communication node to the wireless communication device, at least one repetition number for PUCCH repetition of msg4 hybrid automatic repeat request acknowledgement (HARQ-ACK) transmission, wherein:
when the at least one repetition number comprises a plurality of repetition numbers, the wireless communication device selects a repetition number from the plurality of repetition numbers according to an indication received via a downlink control information (DCI) signaling for msg4;
when the at least one repetition number comprises only one repetition number, the wireless communication device uses the only one repetition number for the PUCCH repetition; and
receiving, by the wireless communication node from the wireless communication device, the msg4 HARQ-ACK with the PUCCH repetition.
6 . The method of claim 5 , comprising:
transmitting, by the wireless communication node to the wireless communication device, the at least one repetition number via a system information block (SIB) broadcast.
7 . A wireless communication node, comprising:
at least one processor configured to:
receive, via a transceiver from a wireless communication device, a msg3 comprising an indication that the wireless communication device supports physical uplink control channel PUCCH) repetition;
transmit, via the transceiver to the wireless communication device, at least one repetition number for PUCCH repetition of msg4 hybrid automatic repeat request acknowledgement (HARQ-ACK) transmission, wherein:
when the at least one repetition number comprises a plurality of repetition numbers, the wireless communication device selects a repetition number from the plurality of repetition numbers according to an indication received via a downlink control information (DCI) signaling for msg4;
when the at least one repetition number comprises only one repetition number, the wireless communication device uses the only one repetition number for the PUCCH repetition; and
receive, via the transceiver from the wireless communication device, the msg4 HARQ-ACK with the PUCCH repetition.
8 . The wireless communication device of claim 7 , wherein the at least one processor is configured to:
transmit, via the transceiver to the wireless communication device, the at least one repetition number via a system information block (SIB) broadcast.