Uplink transmission method and apparatus, device, and readable storage medium
The present disclosure relates to the field of communications, and provides an uplink transmission method and apparatus, a device, and a readable storage medium. The method includes: receiving configuration signaling, the configuration signaling comprising a first indication field, and the first indication field being used for indicating precoding matrix indicator information, i.e., TPMI indication information when a terminal sends codebook-based uplink transmission of a physical uplink shared channel (PUSCH); and determining, on the basis of the TPMI indication information, precoding used when the PUSCH is sent, wherein the terminal reports whether to support the capability of a second TPMI indication field.
1 . An uplink transmission method, performed by a terminal, the method comprising:
receiving configuration signaling, wherein the configuration signaling comprises a first indication field, the first indication field indicates precoding matrix indicator (TPMI indication information) while the terminal transmits codebook-based uplink transmission of a physical uplink shared channel (PUSCH); and
determining a precoding used while the PUSCH is transmitted, based on the TPMI indication information,
wherein, while a sounding reference signal (SRS) resource set is configured as at least one but no corresponding SRI indication domain exists, the PUSCH is transmitted by using the precoding indicated by the TPMI domain in a beam direction corresponding to SRS resource contained in each SRS resource set respectively.
2 . The method according to claim 1 , further comprising:
determining the precoding used while the PUSCH is transmitted towards a TRP direction based on the TPMI indication information;
or,
determining the precoding used while the PUSCH is transmitted towards at least two TRP directions based on the TPMI indication information.
3 . The method according to claim 1 , wherein determining a precoding used while the PUSCH is transmitted, based on the TPMI indication information comprises:
determining the precoding of the PUSCH through TPMI information in a TPMI domain, while the TPMI indication information is configured to indicate that the terminal indicates the precoding matrix through the TPMI domain.
4 . The method according to claim 3 , further comprising:
applying the precoding indicated by the TPMI information in the TPMI domain to all transmission opportunities of the PUSCH.
5 . The method according to claim 3 , further comprising:
applying the precoding indicated by the TPMI information in the TPMI domain to a first transmission opportunity of the PUSCH.
6 . The method according to claim 5 , further comprising:
applying a precoding preconfigured by a network to an n-th transmission opportunity of the PUSCH, n>1, and n being an integer, wherein different transmission opportunities use the same precoding or different precodings;
or,
applying a predefined precoding to an n-th transmission opportunity of the PUSCH, n>1, and n being an integer, wherein different transmission opportunities use the same precoding or different precodings.
7 . The method according to claim 5 , further comprising:
applying a group of precodings associated with the TPMI information in the TPMI domain and determined to be used by the terminal based on known information to PUSCH transmission opportunities after the first transmission opportunity, wherein different transmission opportunities use the same precoding or different precodings.
8 . The method according to claim 3 , wherein determining the precoding of the PUSCH through the TPMI information in a TPMI domain comprises:
applying the precoding indicated by the TPMI information in the TPMI domain to respective first transmission opportunities in transmission opportunity groups corresponding to transmitting the PUSCH in each TRP direction.
9 . The method according to claim 8 , wherein
other transmission opportunities except the first transmission opportunity use the same precoding or different precodings.
10 . The method according to claim 1 , wherein
while a sounding reference signal (SRS) resource set is configured as at least one and at least one SRS resource indication (SRI) domain exists, the PUSCH is transmitted by using the precoding indicated by the TPMI domain in a beam direction corresponding to SRS resource indicated in each SRI domain respectively.
11 . A non-transient computer-readable storage medium, having at least one instruction, at least one program, code set or instruction set stored therein, wherein the at least one instruction, at least one program, code set or instruction set is loaded and executed by a processor to implement the uplink transmission method according to claim 1 .
12 . An uplink transmission method, performed by a network device, the method comprising:
transmitting configuration signaling to a terminal, wherein the configuration signaling comprises a first indication field, the first indication field indicates precoding matrix indicator (TPMI indication information) while the terminal transmits codebook-based uplink transmission of a physical uplink shared channel (PUSCH); and
determining a precoding used while the PUSCH is received, based on the TPMI indication information,
wherein, while a sounding reference signal (SRS) resource set is configured as at least one but no corresponding SRI indication domain exists, the network device expects the terminal to transmit the PUSCH by using the precoding indicated by the TPMI domain in a beam direction corresponding to SRS resource contained in each SRS resource set respectively.
13 . The method according to claim 12 , further comprising:
configuring the TPMI indication information to be applied to the precoding used while the PUSCH is received towards a TRP direction;
or,
configuring the TPMI indication information to be applied to the precoding used while the PUSCH is received towards at least two TRP directions.
14 . The method according to claim 13 , further comprising:
configuring the precoding indicated by the TPMI information in the TPMI domain to be applied to all transmission opportunities of the PUSCH.
15 . The method according to claim 13 , further comprising:
configuring the precoding indicated by the TPMI information in the TPMI domain to be applied to a first transmission opportunity of the PUSCH.
16 . The method according to claim 15 , further comprising:
transmitting configuration information to the terminal, wherein the configuration information configures a precoding applied to an n-th transmission opportunity of the PUSCH to the terminal, n>1, and n being an integer, wherein different transmission opportunities use the same precoding or different precodings;
or,
predefining the precoding applied to an n-th transmission opportunity of the PUSCH, n>1, and n being an integer, wherein different transmission opportunities use the same precoding or different precodings.
17 . The method according to claim 13 , wherein determining the precoding of the PUSCH through the TPMI information in a TPMI domain comprises:
configuring the precoding indicated by the TPMI information in the TPMI domain to be applied to respective first transmission opportunities in transmission opportunity groups corresponding to receiving the PUSCH in each TRP direction.
18 . A network device, comprising:
a processor; and
a transceiver, connected with the processor,
wherein, the processor is configured to load and execute executable instructions to implement the uplink transmission method according to claim 12 .
19 . A terminal, comprising:
a processor; and
a transceiver, connected with the processor,
wherein, the processor is configured to load and execute executable instructions to implement a uplink transmission method, the method is applied to a terminal and comprises:
receiving configuration signaling, wherein the configuration signaling comprises a first indication field, the first indication field indicates precoding matrix indicator (TPMI indication information) while the terminal transmits codebook-based uplink transmission of a physical uplink shared channel (PUSCH); and
determining a precoding used while the PUSCH is transmitted, based on the TPMI indication information,
wherein, while a sounding reference signal (SRS) resource set is configured as at least one but no corresponding SRI indication domain exists, the PUSCH is transmitted by using the precoding indicated by the TPMI domain in a beam direction corresponding to SRS resource contained in each SRS resource set respectively.