Uplink channel transmission method and apparatus, and base station, terminal and storage medium
The embodiments of the present application provide a method for transmitting an uplink channel, an apparatus, a base station, a terminal and a storage medium. The method includes the following steps: determining an uplink beam or a downlink beam; determining a first beam used for uplink channel transmission according to the uplink beam or the downlink beam, and a predetermined rule or first indication information configured for the terminal by the base station; and transmitting an uplink channel by using the first beam. Therefore, according to the embodiments of the present application, the flexibility in selection of beams used by the uplink channel transmission is improved and the efficiency of the uplink channel transmission is increased.
1 . A method for transmitting an uplink channel, performed by a terminal, comprising:
determining an uplink beam or a downlink beam;
determining a first beam used for uplink channel transmission according to the uplink beam or the downlink beam, and a predetermined rule or first indication information configured for the terminal by a base station; and
transmitting the uplink channel by using the first beam;
wherein the uplink beam comprises one or more of the following: a beam of a latest random access channel, RACH; or a predefined beam of a physical uplink shared channel, PUSCH; and
the downlink beam comprises one or more of the following: a beam of a physical downlink control channel, PDCCH; a beam of a downlink control resource set, CORESET; a beam of a physical downlink shared channel, PDSCH; a beam of a reference signal in a latest channel state information reference signal resource indicator, CRI, report by a terminal; or a beam used for determining sounding reference signal, SRS, in downlink PDSCH.
2 . The method of claim 1 , wherein the predetermined rule comprises multiple sub-rules; and
the determining the first beam used for uplink channel transmission according to the uplink beam or the downlink beam, and a predetermined rule, comprises:
acquiring second indication information configured for the terminal by the base station, wherein the second indication information comprises an identifier used for indicating a sub-rule that is in effect; and
determining the first beam used for uplink channel transmission from the uplink beam or the downlink beam according to the predetermined rule and the second indication information.
3 . The method of claim 1 , wherein the uplink channel comprises a first physical uplink shared channel (PUSCH), and wherein the first beam comprises a second beam used for transmitting the first PUSCH.
4 . The method of claim 3 , wherein the predetermined rule or the first indication information comprises one or more of following sub-rules:
the second beam is determined according to a beam of a physical downlink control channel (PDCCH) used for scheduling the first PUSCH;
the second beam is determined according to a beam of a first control resource set (CORESET);
the second beam is determined according to a beam of a demodulation reference signal (DMRS) in a first physical downlink shared channel (PDSCH);
the second beam is determined according to a beam of a reference signal in a first channel state information reference signal resource indicator (CRI) report of the terminal; wherein the first CRI report is used to characterize a latest CRI report before the terminal determines the second beam;
the second beam is determined according to a beam used by a first random access channel (RACH); wherein the first RACH is used to characterize a latest RACH before the terminal determines the second beam;
the second beam is determined according to a beam of a predefined second PUSCH;
the second beam is determined according to a beam of a sounding reference signal (SRS) used for determining a transmission beam for PDSCH;
the second beam is determined according to a beam used by a first physical uplink control channel (PUCCH).
5 . The method of claim 4 , wherein the first CORESET comprises:
a fixed CORESET; or
a CORESET with the smallest identification (ID) number in a first slot in which a search space is present; wherein the first slot is used to characterize a latest slot in which the search space is present before the terminal determines the second beam.
6 . The method of claim 4 , wherein the first PDSCH comprises:
a latest PDSCH before the terminal determines the second beam; or
a latest PDSCH before the terminal determines the second beam, and the latest PDSCH is within a time window; or
a latest PDSCH before the terminal determines the second beam, and the latest PDSCH is out of a time window.
7 . The method of claim 4 , wherein the beam used by the first PUCCH channel comprises:
a beam of a predefined PUCCH resource; or
a beam of a dynamically scheduled PUCCH resource for feeding back acknowledgement (ACK) information or non-acknowledgement (NACK) information.
8 . The method of claim 7 , wherein the predefined PUCCH resource comprises:
a fixed PUCCH resource; or
a PUCCH resource with a resource index changing according to a specified rule.
9 . The method of claim 1 , wherein the uplink channel comprises a second PUCCH, and wherein the first beam comprises a third beam used for transmitting the second PUCCH.
10 . The method of claim 9 , wherein the predetermined rule or the first indication information comprises one or more of following sub-rules selected from the following:
the third beam is determined according to a PDCCH indication;
the third beam is determined according to a beam of a PDCCH used for scheduling the second PUCCH;
the third beam is determined according to a predefined third PUSCH;
the third beam is determined according to a beam used by a second RACH; wherein the second RACH is used to characterize a latest RACH before the terminal determines the third beam;
the third beam is determined according to a beam of a second CORESET;
the third beam is determined according to a beam used by a PDSCH associated with the PUCCH.
11 . The method of claim 10 , wherein the third PUSCH comprises:
a latest PUSCH before the terminal determines the third beam; or
a latest PUSCH before the terminal determines the third beam, and the latest PUSCH does not exceed a time window.
12 . The method of claim 10 , wherein the second CORESET comprises:
a fixed CORESET; or
a CORESET with the smallest ID number in a second slot in which a search space is present; wherein the second slot is used to characterize the latest slot in which the search space is present before the terminal determines the third beam.
13 . A method for transmitting an uplink channel, performed by a base station, comprising:
determining an uplink beam or a downlink beam;
determining a first beam used for uplink channel transmission according to the uplink beam or the downlink beam, and a predetermined rule or first indication information configured for a terminal by the base station; and
receiving the uplink channel by using the first beam;
wherein the uplink beam comprises one or more of the following: a beam of a latest random access channel, RACH; or a predefined beam of a physical uplink shared channel, PUSCH; and
the downlink beam comprises one or more of the following: a beam of a physical downlink control channel, PDCCH; a beam of a downlink control resource set, CORESET; a beam of a physical downlink shared channel, PDSCH; a beam of a reference signal in a latest channel state information reference signal resource indicator, CRI, report by a terminal; or a beam used for determining sounding reference signal, SRS, in downlink PDSCH.
14 . The method of claim 13 , wherein the predetermined rule comprises multiple sub-rules;
the determining the first beam used for uplink channel transmission according to the uplink beam or the downlink beam, and a predetermined rule, comprises:
acquiring second indication information configured for the terminal by the base station, wherein the second indication information comprises an identifier used for indicating a sub-rule that is in effect; and
determining the first beam used for uplink channel transmission from the uplink beam or the downlink beam according to the predetermined rule and the second indication information.
15 . The method of claim 13 , wherein the uplink channel comprises a first physical uplink shared channel (PUSCH), and wherein the first beam comprises a second beam used for transmitting the first PUSCH.
16 . The method of claim 15 , wherein the predetermined rule or the first indication information comprises one or more of following sub-rules:
the second beam is determined according to a beam of a physical downlink control channel (PDCCH) used for scheduling the first PUSCH;
the second beam is determined according to a beam of a first control resource set (CORESET);
the second beam is determined according to a beam of a demodulation reference signal (DMRS) in a first physical downlink shared channel (PDSCH);
the second beam is determined according to a beam of a reference signal in a first channel state information reference signal resource indicator (CRI) report of the terminal;
wherein a first CRI report is used to characterize a latest CRI report before the terminal determines the second beam;
the second beam is determined according to a beam used by a first random access channel (RACH); wherein the first RACH is used to characterize a latest RACH before the terminal determines the second beam;
the second beam is determined according to a beam of a predefined second PUSCH;
the second beam is determined according to a beam of a sounding reference signal (SRS) used for determining a transmission beam for PDSCH;
the second beam is determined according to a beam used by a first physical uplink control channel (PUCCH).
17 . The method of claim 13 , wherein the uplink channel comprises a second PUCCH, and wherein the first beam comprises a third beam used for transmitting the second PUCCH.
18 . The method of claim 17 , wherein the predetermined rule or the first indication information comprises one or more of following sub-rules:
the third beam is determined according to a PDCCH indication;
the third beam is determined according to a beam of a PDCCH used for scheduling the second PUCCH;
the third beam is determined according to a predefined third PUSCH;
the third beam is determined according to a beam used by a second RACH; wherein the second RACH is used to characterize a latest RACH before the terminal determines the third beam;
the third beam is determined according to a beam of a second CORESET;
the third beam is determined according to a beam used by a PDSCH associated with the PUCCH.
19 . A terminal comprising a processor and a memory storing a program executable by the processor, wherein the program, when executed by a processor, causes the processor to perform the following steps:
determining an uplink beam or a downlink beam;
determining a first beam used for uplink channel transmission according to the uplink beam or the downlink beam, and a predetermined rule or first indication information configured for the terminal by a base station; and
transmitting an uplink channel by using the first beam;
wherein the uplink beam comprises one or more of the following: a beam of a latest random access channel, RACH; or a predefined beam of a physical uplink shared channel, PUSCH; and
the downlink beam comprises one or more of the following: a beam of a physical downlink control channel, PDCCH; a beam of a downlink control resource set, CORESET; a beam of a physical downlink shared channel, PDSCH; a beam of a reference signal in a latest channel state information reference signal resource indicator, CRI, report by a terminal; or a beam used for determining sounding reference signal, SRS, in downlink PDSCH.
20 . A base station comprising a processor and a memory storing a program executable by the processor, wherein the program, when executed by a processor, causes the processor to perform steps of claim 13 .