Using a stop indication for physical uplink shared channel transmission
Apparatuses, methods, and systems are disclosed for using a stop indication for physical uplink shared channel transmission. One method includes transmitting a physical uplink shared channel transmission in an autonomous uplink configured grant resource after performing a listen-before-talk procedure. In various embodiments, the method includes receiving a stop indication in response to transmitting the physical uplink shared channel transmission, wherein the stop indication indicates for a group of user equipments not to transmit in an overlapped configured grant resource for a period of time corresponding to a spatial filter.
1 . A method performed by a user equipment (UE), the method comprising:
transmitting, to a base station, a physical uplink shared channel (PUSCH) transmission in an autonomous uplink configured grant resource after a listen-before-talk (LBT) procedure being successful; and
receiving a stop indication from the base station in response to transmitting the PUSCH transmission, wherein the stop indication indicates that a group of UEs are not to transmit in an overlapped configured grant resource for a period of time corresponding to a spatial filter.
2 . The method of claim 1 , further comprising receiving information indicating a clear to send command for a UE not part of the group of UEs.
3 . The method of claim 2 , wherein the clear to send command indicates for the UE to transmit in the overlapped configured grant resource for the period of time corresponding to the spatial filter.
4 . The method of claim 2 , wherein the information indicating the clear to send command comprises a UE identifier transmitted in groupcast downlink control information (DCI) together with the stop indication.
5 . The method of claim 2 , wherein the information indicating the clear to send command comprises an indicator transmitted in unicast downlink control information (DCI).
6 . The method of claim 1 , wherein the stop indication is transmitted using a group common physical downlink control channel (PDCCH) with a configured radio network temporary identifier (RNTI).
7 . The method of claim 1 , further comprising starting a timer in response to transmitting the PUSCH transmission.
8 . The method of claim 7 , further comprising stopping the timer in response to receiving the stop indication.
9 . The method of claim 7 , further comprising, in response to expiration of the timer prior to receiving the stop indication, transmitting a new transport block (TB) in the autonomous uplink configured grant resource.
10 . A user equipment (UE), comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
transmit, to a base station, a physical uplink shared channel (PUSCH) transmission in an autonomous uplink configured grant resource after a listen-before-talk (LBT) procedure being successful; and
receive a stop indication from the base station in response to transmitting the PUSCH transmission, wherein the stop indication indicates that a group of UEs are not to transmit in an overlapped configured grant resource for a period of time corresponding to a spatial filter.
11 . The UE of claim 10 , wherein the at least one processor is configured to cause the UE to receive information indicating a clear to send command for a UE not part of the group of UEs.
12 . A base station, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the base station to:
receive a physical uplink shared channel (PUSCH) transmission in an autonomous uplink configured grant resource from a user equipment (UE) after a listen-before-talk (LBT) procedure is successfully performed by the UE; and
transmit a stop indication to the UE in response to receiving the PUSCH transmission, wherein the stop indication indicates that a group of UEs are not to transmit in an overlapped configured grant resource for a period of time corresponding to a spatial filter.
13 . The base station of claim 12 , wherein the at least one processor is configured to cause the base station to transmit information indicating a clear to send command for a UE not part of the group of UEs.
14 . The base station of claim 13 , wherein the clear to send command indicates for the UE to transmit in the overlapped configured grant resource for the period of time corresponding to the spatial filter.
15 . The base station of claim 13 , wherein the information indicating the clear to send command comprises a UE identifier transmitted in groupcast downlink control information (DCI) together with the stop indication.
16 . The base station of claim 13 , wherein the information indicating the clear to send command comprises an indicator transmitted in unicast downlink control information (DCI).
17 . The base station of claim 12 , wherein the stop indication is transmitted using a group common physical downlink control channel (PDCCH) with a configured radio network temporary identifier (RNTI).
18 . The base station of claim 12 , wherein the at least one processor is configured to cause the base station to transmit information indicating a radio network temporary identifier (RNTI) for monitoring group common downlink control information (DCI).
19 . The base station of claim 18 , wherein a cyclic redundancy checksum (CRC) of the group common DCI is masked with the RNTI.
20 . The base station of claim 18 , wherein the group common DCI indicates multiple cancel indicators, muting indicators, or clear-to send indicators, or a combination thereof.