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EP-4128962-B1 - USING A STOP INDICATION FOR PHYSICAL UPLINK SHARED CHANNEL TRANSMISSION

EP4128962B1EP 4128962 B1EP4128962 B1EP 4128962B1EP-4128962-B1

Inventors

  • GANESAN, KARTHIKEYAN
  • BHAMRI, ANKIT
  • GOLITSCHEK EDLER VON ELBWART, ALEXANDER JOHANN MARIA
  • ALI, Ali Ramadan
  • NANGIA, VIJAY

Dates

Publication Date
20260506
Application Date
20210325

Claims (15)

  1. A user equipment, UE, (102, 200) for wireless communication, comprising: at least one memory (204); and at least one processor (202) coupled with the at least one memory (204) and configured to cause the UE (102, 200) to: transmit (502) a physical uplink shared channel, PUSCH, transmission in an autonomous uplink configured grant resource after performing a listen-before-talk, LBT, procedure; and receive (504) a stop indication in response to the PUSCH transmission, wherein the stop indication indicates for a group of UEs not to transmit in an overlapped configured grant resource for a period of time using a spatial filter which is indicated in the stop indication.
  2. The UE (102, 200) of claim 1, wherein the UE (102, 200) is configured to receive information indicating a clear to send, CTS, command for a UE that is not part of the group of UEs.
  3. The UE (102, 200) of claim 2, wherein the CTS command indicates for the UE (102, 200) to transmit in the overlapped configured grant resource for the period of time using an indicated spatial filter.
  4. The UE (102, 200) of claim 2, wherein: the information comprises a UE identifier which is received in a groupcast downlink control information, GC-DCI, wherein the GC-DCI includes the stop indication; or the information comprises an indicator which is received in unicast downlink control information, UC DCI.
  5. The UE (102, 200) of claim 1, wherein the stop indication is received using a group common physical downlink control channel, GC-PDCCH, with a configured radio network temporary identifier, RNTI.
  6. The UE (102, 200) of claim 1, wherein the UE (102, 200) is configured to start a timer in response to the PUSCH transmission.
  7. The UE (102, 200) of claim 6, wherein the UE (102, 200) is configured to stop the timer in response to receiving the stop indication.
  8. The UE (102, 200) of claim 6, wherein the UE (102, 200) is configured to transmit a new transport block, TB, in the autonomous uplink configured grant resource in response to expiration of the timer prior to receiving the stop indication.
  9. A method performed by a user equipment, UE, (102, 200), the method comprising: transmitting a physical uplink shared channel, PUSCH, transmission in an autonomous uplink configured grant resource after performing a listen-before-talk, LBT, procedure; and receiving a stop indication in response to the PUSCH transmission, wherein the stop indication indicates for a group of UEs not to transmit in an overlapped configured grant resource for a period of time using a spatial filter which is indicated in the stop indication.
  10. A method (600) performed by a network unit (104, 300), the method comprising: receiving (602) a physical uplink shared channel, PUSCH, transmission in an autonomous uplink configured grant resource; and transmitting (604) a stop indication in response to receiving the PUSCH transmission, wherein the stop indication indicates for a group of UEs not to transmit in an overlapped configured grant resource for a period of time using a spatial filter which is indicated in the stop indication.
  11. The method (600) of claim 10, comprising transmitting information indicating a clear to send, CTS, command for a UE not part of the group of UEs.
  12. The method (600) of claim 11, wherein: the CTS command indicates for the UE to transmit in the overlapped configured grant resource for the period of time using an indicated spatial filter; or the information comprises a UE identifier which is transmitted in groupcast downlink control information, GC-DCI, wherein the GC-DCI includes the stop indication; or the information comprises an indicator transmitted in unicast downlink control information, UC DCI.
  13. A network unit (104, 300) for wireless communication, comprising: at least one memory (304); and at least one processor (302) coupled with the at least one memory (304) and configured to cause the network unit (104, 300) to: receive (602) a physical uplink shared channel, PUSCH, transmission in an autonomous uplink configured grant resource; and transmit (604) a stop indication in response to the PUSCH transmission, wherein the stop indication indicates for a group of UEs not to transmit in an overlapped configured grant resource for a period of time using a spatial filter which is indicated in the stop indication.
  14. The network unit (104, 300) of claim 13, configured to transmit information indicating a clear to send, CTS, command for a UE not part of the group of UEs.
  15. A processor (202) for a user equipment, UE, (102, 200) for wireless communication, comprising: at least one controller coupled with at least one memory (204) and configured to cause the processor (202) to: transmit (502) a physical uplink shared channel, PUSCH, transmission in an autonomous uplink configured grant resource after performing a listen-before-talk, LBT, procedure; and receive (504) a stop indication in response to the PUSCH transmission, wherein the stop indication indicates for a group of UEs not to transmit in an overlapped configured grant resource for a period of time using a spatial filter which is indicated in the stop indication.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to United States Patent Application Serial Number 63/000,028 entitled "APPARATUSES, METHODS, AND SYSTEMS FOR CONFIGURED GRANT PROCEDURE FOR SPATIAL LBT" and filed on March 26, 2020 for Karthikeyan Ganesan. FIELD The subject matter disclosed herein relates generally to wireless communications and more particularly relates to using a stop indication for physical uplink shared channel transmission. BACKGROUND In certain wireless communications networks, interference between signals of different devices may be compounded with unnecessary transmissions. ZTE, "Discussion on configured grant for NR-U", R1-1812438, 3GPP TSG RAN WG1 Meeting #95, Spokane, USA, November 12th-16th, 2018, discusses configured grant support aspects for NR-U. US2019166503A1 discloses a communication method for interference avoidance in an unlicensed band. A transmission node transmits in the unlicensed band a preemption signal to a target reception node. Upon receiving a ready signal from the target reception node, the transmission node transmits in the unlicensed band a data signal to the target reception node. Fujitsu, "Discussion on UL cancellation indication", R1-1906585, 3GPP TSG RAN WG1 #97, Reno, USA, May 13th - 17th, 2019, discusses the design of UL inter-UE cancellation indication (CI) from point of view to limit standardization efforts. US2017105224A1 discloses a method for channel reservation and communication using carrier sense multiple access (CSMA) with directional antennas in a wireless network. A source station (STA) transmits a directional request to send (RTS) frame to a destination station before a data transmission. Upon receipt of the RTS frame, the destination STA transmits a transmit network allocation vector (TNAV) frame instructing receiving stations not to perform transmissions toward the destination STA for a predefined period of time, US2017171723A1 discloses a wireless communication device which receives a first frame, a transmitter address of which is an address of a first wireless communication device and a receiver address of which is an address of the wireless communication device; and a to transmits a second frame generated using a first address process in response to receipt of the first frame. BRIEF SUMMARY The invention is defined by the appended independent claims. Methods for using a stop indication for physical uplink shared channel transmission are disclosed. Apparatuses and systems also perform the functions of the methods. One embodiment of a 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. One apparatus for using a stop indication for physical uplink shared channel transmission includes a transmitter that transmits a physical uplink shared channel transmission in an autonomous uplink configured grant resource after performing a listen-before-talk procedure. In various embodiments, the apparatus includes a receiver that receives 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. In certain embodiments, a method for using a stop indication for physical uplink shared channel transmission includes receiving a physical uplink shared channel transmission in an autonomous uplink configured grant resource. In various embodiments, the method includes transmitting a stop indication in response to receiving 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. In some embodiments, an apparatus for using a stop indication for physical uplink shared channel transmission includes a receiver that receives a physical uplink shared channel transmission in an autonomous uplink configured grant resource. In various embodiments, the apparatus includes a transmitter that transmits a stop indication in response to receiving 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. BRIEF DESCRIPTION OF THE DRAWINGS A more particular description of the embodiments briefly described above will be rendered by reference to specif