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EP-4740346-A1 - METHODS AND APPARATUSES FOR MULTI-PUSCH RETRANSMISSION

EP4740346A1EP 4740346 A1EP4740346 A1EP 4740346A1EP-4740346-A1

Abstract

Multi-PUSCH transmission with simultaneous transmission over multiple panels (STxMP) in wireless communications (e.g., in a 5G NR network) may be performed by a wireless transmit/receive unit (WTRU). The WTRU may determine transmission mode as a function of a new data indicator (NDI) value. A toggled NDI field may indicate new data and may indicate a single panel mode. An untoggled NDI field may indicate a retransmission and may indicate STxMP mode.

Inventors

  • CANONNE-VELASQUEZ, Loic
  • HAGHIGHAT, AFSHIN
  • LEE, MOON IL
  • PARK, JONGHYUN
  • COMSA, VIRGIL
  • Irfan, Mohammad

Assignees

  • InterDigital Patent Holdings, Inc.

Dates

Publication Date
20260513
Application Date
20240703

Claims (20)

  1. 1 . A wireless transmit/receive unit (WTRU) comprising: a transceiver; and a processor configured to: receive, via the transceiver, an uplink grant, the uplink grant comprising an indication of scheduling information for a multi-physical uplink shared channel (PUSCH) transmission and a set of new data indicator (N DI) values for the multi-PUSCH transmission; determine, based on the set of NDI values, a respective uplink transmission mode for each PUSCH transmission of the multi-PUSCH transmission; and transmit, via the transceiver, a first PUSCH transmission of the multi-PUSCH transmission using a first uplink transmission mode, based on the set of NDI values comprising an indication that the first PUSCH transmission is a retransmission.
  2. 2. The WTRU of claim 1 , wherein the processor is further configured to transmit, via the transceiver, a second PUSCH transmission of the multi-PUSCH transmission using a second uplink transmission mode, based on the set of NDI values comprising an indication the second PUSCH transmission is a transmission of new data.
  3. 3. The WTRU of claim 2, wherein the first uplink transmission mode comprises a single-panel mode and the second uplink transmission mode comprises a simultaneous transmission over multi-panel (STxMP) mode.
  4. 4. The WTRU of claim 3, wherein the processor is further configured to determine a transmission mode based on a sequence of NDI toggle states.
  5. 5. The WTRU of claim 1 , wherein the processor is further configured to determine the respective uplink transmission mode based on the NDI values received in the uplink grant and at least one previous NDI value.
  6. 6. The WTRU of claim 1 , wherein the processor is further configured to determine the respective uplink transmission mode based on the set of NDI values and at least one of a modulation and coding scheme (MCS) index, a number of codewords, a number of PUSCHs, a PUSCH index, a redundancy version (RV) index, or a reference signal received power (RSRP) of a link between the WTRU and a transmission/reception point (TRP).
  7. 7. The WTRU of claim 1 , wherein each NDI value of the set of NDI values comprises a bit indicative of a new transmission or a retransmission, wherein a toggled on state of the bit indicates a new transmission and a toggled off state of the bit indicates a retransmission.
  8. 8. A method performed by wireless transmit/receive unit (WTRU), the method comprising: receiving an uplink grant, the uplink grant comprising an indication of scheduling information for a multi- physical uplink shared channel (PUSCH) transmission and a set of new data indicator (NDI) values for the multi-PUSCH transmission; determining, based on the set of NDI values, a respective uplink transmission mode for each PUSCH transmission of the multi-PUSCH transmission; and transmitting a first PUSCH transmission of the multi-PUSCH transmission using a first uplink transmission mode, based on the set of NDI values comprising an indication that the first PUSCH transmission is a retransmission.
  9. 9. The method of claim 8, further comprising transmitting a second PUSCH transmission of the multi- PUSCH transmission using a second uplink transmission mode, based on the set of NDI values comprising an indication the second PUSCH transmission is a transmission of new data.
  10. 10. The method of claim 9, wherein the first uplink transmission mode comprises a single-panel mode and the second uplink transmission mode comprises a simultaneous transmission over multi-panel (STxMP) mode.
  11. 11 . The method of claim 10, further comprising determining a transmission mode based on a sequence of NDI toggle states.
  12. 12. The method of claim 8, further comprising determining the respective uplink transmission mode based on the NDI values received in the uplink grant and at least one previous NDI value.
  13. 13. The method of claim 8, further comprising determining the respective uplink transmission mode based on the set of NDI values and at least one of a modulation and coding scheme (MCS) index, a number of codewords, a number of PUSCHs, a PUSCH index, a redundancy version (RV) index, or a reference signal received power (RSRP) of a link between the WTRU and a transmission/reception point (TRP).
  14. 14. The method of claim 8, wherein each NDI value of the set of NDI values comprises a bit indicative of a new transmission or a retransmission, wherein a toggled on state of the bit indicates a new transmission and a toggled off state of the bit indicates a retransmission.
  15. 15. At least one non-transitory computer-readable storage medium comprising executable instructions for configuring at least one processor to: receive an uplink grant, the uplink grant comprising an indication of scheduling information for a multi- physical uplink shared channel (PUSCH) transmission and a set of new data indicator (NDI) values for the multi-PUSCH transmission; determine, based on the set of NDI values, a respective uplink transmission mode for each PUSCH transmission of the multi-PUSCH transmission; and transmit a first PUSCH transmission of the multi-PUSCH transmission using a first uplink transmission mode, based on the set of NDI values comprising an indication that the first PUSCH transmission is a retransmission.
  16. 16. The at least one non-transitory computer-readable storage medium of claim 15, the executable instructions further for configuring the at least one processor to transmit a second PUSCH transmission of the multi-PUSCH transmission using a second uplink transmission mode, based on the set of NDI values comprising an indication the second PUSCH transmission is a transmission of new data.
  17. 17. The at least one non-transitory computer-readable storage medium of claim 16, wherein the first uplink transmission mode comprises a single-panel mode and the second uplink transmission mode comprises a simultaneous transmission over multi-panel (STxMP) mode.
  18. 18. The at least one non-transitory computer-readable storage medium of claim 17, the executable instructions further for configuring the at least one processor to determine a transmission mode based on a sequence of NDI states.
  19. 19. The at least one non-transitory computer-readable storage medium of claim 15, the executable instructions further for configuring the at least one processor to determine the respective uplink transmission mode based on the NDI values received in the uplink grant and at least one previous NDI value.
  20. 20. The at least one non-transitory computer-readable storage medium of claim 15, the executable instructions further for configuring the at least one processor to determine the respective uplink transmission mode based on the set of NDI values and at least one of a modulation and coding scheme (MCS) index, a number of codewords, a number of PUSCHs, a PUSCH index, a redundancy version (RV) index, or a reference signal received power (RSRP) of a link between the WTRU and a transmission/reception point (TRP).

Description

METHODS AND APPARATUSES FOR MULTI-PUSCH RETRANSMISSION CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Patent Application Number 63/525,062, filed July 5, 2023, which is hereby incorporated herein by reference in its entirety. BACKGROUND [0002] In some cellu I ar/wireless standards (e.g., 3GPP), continued evolution of 5G New Radio (NR) may continue to optimize management and enhance performance for wireless communications. To enhance reliability and throughput, some enhancements for uplink transmission are considered. For example, additional or improved features and procedures regarding simultaneous transmission may be desired. SUMMARY [0003] Embodiments disclosed herein generally relate to communication networks, wireless and/or wired. One or more examples disclosed herein are related to methods, apparatuses, and procedures for simultaneous transmission over multiple panels (STxMP) multi-physical uplink shared channel (PUSCH) transmission in wireless communications (e.g., in a 5G NR network). [0004] An example wireless transmit/receive unit (WTRU) for performing multi-PUSCH retransmission may comprise a transceiver and a processor. The processor may be configured to receive, via the transceiver, an uplink grant. The uplink grant may comprise an indication of scheduling information for a multi-physical uplink shared channel (PUSCH) transmission and a set of new data indicator (NDI) values for the multi-PUSCH transmission. The processor may be configured to determine, based on the set of NDI values, a respective uplink transmission mode for each PUSCH transmission of the multi-PUSCH transmission. The processor may be configured to transmit, via the transceiver, a first PUSCH transmission of the multi-PUSCH transmission using a first uplink transmission mode, based on the set of NDI values comprising an indication that the first PUSCH transmission is a retransmission. The processor may be configured to transmit, via the transceiver, a second PUSCH transmission of the multi-PUSCH transmission using a second uplink transmission mode, based on the set of NDI values comprising an indication the second PUSCH transmission is a transmission of new data. The first uplink transmission mode may comprise a single-panel mode, and the second uplink transmission mode may comprise a simultaneous transmission over multi-panel (STxMP) mode. The processor may be configured to determine a transmission mode based on a sequence of NDI toggle states. The processor may be configured to determine the respective uplink transmission mode based on the NDI values received in the uplink grant and at least one previous NDI value. The processor may be configured to determine the respective uplink transmission mode based on the set of NDI values and at least one of a modulation and coding scheme (MCS) index, a number of codewords, a number of PUSCHs, a PUSCH index, a redundancy version (RV) index, or a reference signal received power (RSRP) of a link between the WTRU and a transmission/reception point (TRP). Each NDI value of the set of NDI values may comprise a bit indicative of a new transmission or a retransmission, wherein a toggled on state of the bit indicates a new transmission and a toggled off state of the bit indicates a retransmission. [0005] An example method for performing multi-PUSCH retransmission may be performed by a WTRU. The method may comprise receiving an uplink grant, the uplink grant comprising an indication of scheduling information for a multi- physical uplink shared channel (PUSCH) transmission and a set of new data indicator (NDI) values for the multi-PUSCH transmission. The method may comprise determining, based on the set of NDI values, a respective uplink transmission mode for each PUSCH transmission of the multi- PUSCH transmission. The method may comprise transmitting a first PUSCH transmission of the multi- PUSCH transmission using a first uplink transmission mode, based on the set of NDI values comprising an indication that the first PUSCH transmission is a retransmission. The method may comprise transmitting a second PUSCH transmission of the multi-PUSCH transmission using a second uplink transmission mode, based on the set of NDI values comprising an indication the second PUSCH transmission is a transmission of new data. The first uplink transmission mode may comprise a single-panel mode, and the second uplink transmission mode may comprise a simultaneous transmission over multi-panel (STxMP) mode. The method may comprise determining a transmission mode based on a sequence of NDI toggle states. The method may comprise determining the respective uplink transmission mode based on the NDI values received in the uplink grant and at least one previous NDI value. The method may comprise determining the respective uplink transmission mode based on the set of NDI values and at least one of a modulation and coding scheme (MCS) index, a number of codewords, a