Method for allocating time domain resources, data transmission method, base station, and terminal
A base station transmits downlink control information, DCI, signaling. The DCI signaling indicates a time domain resource to be used to perform physical uplink shared channel, PUSCH, by a terminal. The time domain resource includes at least one slot, at least one mini-slot, or both the at least one slot and at least one mini-slot.
1. A method for allocating time domain resources, applied to a base station, the method comprising:
transmitting downlink control information, DCI, signaling by the base station, the DCI signaling being configured to indicate a time domain resource used by a terminal to perform physical uplink shared channel (PUSCH) transmission, the time domain resource comprising two or more slots, or two or more mini-slots, or both two or more slots and two or more mini-slots;
wherein the DCI signaling is further configured to indicate a starting symbol, or an ending symbol, or both the starting symbol and the ending symbol of the time domain resource; the starting symbol being configured to indicate a starting symbol of the PUSCH transmission performed by the terminal, and the ending symbol being configured to indicate an ending symbol of the PUSCH transmission performed by the terminal;
the DCI signaling comprises at least one of one starting symbol of the time domain resource or one ending symbol of the time domain resource, wherein the one starting symbol is configured to indicate the starting symbol of each of the two or more slots; and the one ending symbol is configured to indicate the ending symbol of each of the two or more slots; or
the DCI signaling comprises one starting symbol of the time domain resource and one symbol number, wherein the one starting symbol is configured to indicate the starting symbol of a first one of the two or more mini-slots, and the one symbol number is configured to indicate the number of symbols included in each of the two or more mini-slots and the starting symbol of an S th mini-slot is adjacent to the ending symbol of a (S−1) th mini-slot, where S is an integer greater than 1,
wherein in response to the time domain resource being two or more slots, a scheduling mode of the time domain resource is scheduling based on each slot, a stopping position of a listen before talk (LBT) monitoring is before a starting symbol of a last slot of the two or more slots, and in response to the time domain resource being two or more mini-slots, a scheduling mode of the time domain resource is scheduling based on each mini-slot, a stopping position of the LBT monitoring is a starting symbol of a last mini-slot of the two or more mini-slots.
2. The method of claim 1 , comprising one or both of:
(a) the starting symbol of the time domain resource being set for a first one of the two or more slots; or
(b) the ending symbol of the time domain resource being set for a last one of the two or more slots.
3. The method of claim 1 , wherein, the DCI signaling is further configured to indicate N redundancy versions (RVs) and the terminal uses a respective RV to perform the PUSCH transmission in each slot of the time domain resource,
where N is the number of the slots in the time domain resource indicated by the DCI signaling.
4. The method of claim 1 , wherein, the starting symbol of the time domain resource is set for a first mini-slot or each mini-slot, and the DCI signaling is further configured to indicate the number of symbols included in each mini-slot; or
the starting symbol of the time domain resource is set for each mini-slot, and an adjacent symbol before the starting symbol of an Sth mini-slot is the ending symbol of a (S−1) th mini-slot.
5. The method of claim 1 , wherein, the DCI signaling is further configured to indicate M redundancy versions (RVs) and the terminal uses a respective RV to perform the PUSCH transmission in each mini-slot of the time domain resource,
where, M is the number of the mini-slots in the time domain resource indicated by the DCI signaling.
6. The method of claim 1 , wherein each slot comprises 14 symbols, and the starting symbol is any one of the 14 symbols.
7. The method of claim 1 , wherein in a case where a scheduling mode of the time domain resource is scheduling based on each slot, each slot has at least one starting symbol.
8. A method for transmitting data, applied to a terminal, the method comprising:
receiving, by the terminal, downlink control information (DCI) signaling transmitted by a base station, the DCI signaling being configured to indicate a time domain resource used by the terminal to perform physical uplink shared channel (PUSCH) transmission, the time domain resource comprising two or more slots, or two or more mini-slots, or both the two or more slots and the two or more mini-slots; and
performing the PUSCH transmission by the terminal based on the DCI signaling;
wherein the DCI signaling is further configured to indicate a starting symbol, or an ending symbol, or both the starting symbol and the ending symbol of the time domain resource; the starting symbol being configured to indicate a starting symbol of the PUSCH transmission performed by the terminal, and the ending symbol being configured to indicate an ending symbol of the PUSCH transmission performed by the terminal;
the DCI signaling comprises at least one of one starting symbol of the time domain resource or one ending symbol of the time domain resource, wherein the one starting symbol is configured to indicate the starting symbol of each of the two or more slots; and the one ending symbol is configured to indicate the ending symbol of each of the two or more slots; or
the DCI signaling comprises one starting symbol of the time domain resource and one symbol number, wherein the one starting symbol is configured to indicate the starting symbol of a first one of the two or more mini-slots, and the one symbol number is configured to indicate the number of symbols included in each of the two or more mini-slots and the starting symbol of an S th mini-slot is adjacent to the ending symbol of a (S−1) th mini-slot, where S is an integer greater than 1,
wherein in response to the time domain resource being two or more slots, a scheduling mode of the time domain resource is scheduling based on each slot, a stopping position of a listen before talk (LBT) monitoring is before a starting symbol of a last slot of the two or more slots, and in response to the time domain resource being two or more mini-slots, a scheduling mode of the time domain resource is scheduling based on each mini-slot, a stopping position of the LBT monitoring is a starting symbol of a last mini-slot of the two or more mini-slots.
9. The method of claim 8 ,
wherein performing the PUSCH transmission by the terminal based on the DCI signaling comprises one or both of:
(c) determining a starting symbol of the PUSCH transmission based on the starting symbol; or
(d) determining an ending symbol of the PUSCH transmission based on the ending symbol by the terminal.
10. The method of claim 9 , wherein a position near the starting symbol of the PUSCH transmission in each slot or mini-slot is a PUSCH transmission starting position.
11. The method of claim 10 , wherein performing the PUSCH transmission by the terminal based on the DCI signaling comprises one of:
performing, by the terminal, the PUSCH transmission by taking the starting symbol of the PUSCH transmission in each slot or mini-slot as the PUSCH transmission starting position;
performing, by the terminal, the PUSCH transmission by taking a position away from and after the starting symbol of the PUSCH transmission by a preset duration in each slot or mini-slot as the PUSCH transmission starting position;
performing, by the terminal, the PUSCH transmission by taking a position away from and after the starting symbol of the PUSCH transmission by a preset duration plus a timing advance, (TA) in each slot or mini-slot as the PUSCH transmission starting position; or
performing, by the terminal, the PUSCH transmission by taking a starting position of an adjacent symbol after the starting symbol of the PUSCH transmission as the PUSCH transmission starting position.
12. The method of claim 8 , further comprising:
receiving, by the terminal, control signaling transmitted by the base station, the control signaling being configured to indicate a stopping position of the LBT monitoring performed by the terminal, the control signaling comprising one or a combination of radio resource control (RRC) signaling, media access control MAC) signaling, and the DCI signaling; or
obtaining a stopping position of the LBT monitoring from a chip.
13. A terminal for transmitting data, comprising:
a processor; and
a memory, configured to store instructions executable by the processor;
wherein the processor is configured to:
receive downlink control information (DCI) signaling transmitted by a base station, the DCI signaling being configured to indicate a time domain resource used by the terminal to perform physical uplink shared channel (PUSCH) transmission, the time domain resource comprising two or more slots, or two or more mini-slots, or both two or more slots and two or more mini-slots; and
perform the PUSCH transmission based on the DCI signaling;
wherein the DCI signaling is further configured to indicate a starting symbol, or an ending symbol, or both the starting symbol and the ending symbol of the time domain resource; the starting symbol being configured to indicate a starting symbol of the PUSCH transmission performed by the terminal, and the ending symbol being configured to indicate an ending symbol of the PUSCH transmission performed by the terminal;
the DCI signaling comprises at least one of one starting symbol of the time domain resource or one ending symbol of the time domain resource, wherein the one starting symbol is configured to indicate the starting symbol of each of the two or more slots; and the one ending symbol is configured to indicate the ending symbol of each of the two or more slots; or
the DCI signaling comprises one starting symbol of the time domain resource and one symbol number, wherein the one starting symbol is configured to indicate the starting symbol of a first one of the two or more mini-slots, and the one symbol number is configured to indicate the number of symbols included in each of the two or more mini-slots and the starting symbol of an S th mini-slot is adjacent to the ending symbol of a (S−1) th mini-slot, where S is an integer greater than 1,
wherein in response to the time domain resource being two or more slots, a scheduling mode of the time domain resource is scheduling based on each slot, a stopping position of a listen before talk (LBT) monitoring is before a starting symbol of a last slot of the two or more slots, and in response to the time domain resource being two or more mini-slots, a scheduling mode of the time domain resource is scheduling based on each mini-slot, a stopping position of the LBT monitoring is a starting symbol of a last mini-slot of the two or more mini-slots.
14. The terminal of claim 13 ,
wherein the processor is further configured to execute one or both of:
(c) determining a starting symbol of the PUSCH transmission based on the starting symbol; or
(d) determining an ending symbol of the PUSCH transmission based on the ending symbol by the terminal.
15. The terminal of claim 14 , wherein a position near the starting symbol of the PUSCH transmission in each slot or mini-slot is a PUSCH transmission starting position.
16. The terminal of claim 15 , wherein the processor is further configured to execute one of:
performing the PUSCH transmission by taking the starting symbol of the PUSCH transmission in each slot or mini-slot as the PUSCH transmission starting position;
performing the PUSCH transmission by taking a position away from and after the starting symbol of the PUSCH transmission by a preset duration in each slot or mini-slot as the PUSCH transmission starting position;
performing the PUSCH transmission by taking a position away from and after the starting symbol of the PUSCH transmission by a preset duration plus a timing advance (TA) in each slot or mini-slot as the PUSCH transmission starting position; or
performing the PUSCH transmission by taking a starting position of an adjacent symbol after the starting symbol of the PUSCH transmission as the PUSCH transmission starting position.
17. The terminal of claim 13 , wherein the processor is further configured to:
receive control signaling transmitted by the base station, the control signaling being configured to indicate a stopping position of the LBT monitoring, the control signaling comprising one or a combination of radio resource control (RRC) signaling, media access control (MAC) signaling, and the DCI signaling; or
obtain a stopping position of the LBT monitoring from a chip.