Uplink transmission method, uplink transmission indication method, and device
Embodiments of the present disclosure provide an uplink transmission method, an uplink transmission indication method, and a device. The method includes: determining a first uplink grant, where the terminal does not generate a MAC PDU for the first uplink grant when satisfying a predetermined condition; and determining an uplink transmission behavior of the terminal based on a PUSCH corresponding to the first uplink grant and first uplink control information.
1 . An uplink transmission method performed by a terminal, comprising:
determining a first uplink grant; and
determining an uplink transmission behavior of the terminal,
the determining an uplink transmission behavior of the terminal, comprises:
generating a media access control protocol data unit (MAC PDU) in response to that there is first uplink control information (UCI) to be multiplexed on a physical uplink shared channel (PUSCH) transmission corresponding to the first uplink grant, and multiplexing the MAC PDU with the first uplink control information and sending the MAC PDU and the first uplink control information, wherein content of the MAC PDU is only padding;
wherein the first UCI comprises one or more of the following:
hybrid automatic repeat request (HARQ) feedback information;
a periodic channel state information (CSI) report; or
a scheduling request (SR);
wherein the determining an uplink transmission behavior of the terminal comprises:
in a case that the terminal does not generate the MAC PDU for the PUSCH corresponding to the first uplink grant, generating a dummy bit by using a physical layer of the terminal; and
multiplexing the first uplink control information with the dummy bit, and sending the first uplink control information and the dummy bit,
wherein the generating a dummy bit by using a physical layer of the terminal comprises:
generating the dummy bit by using the physical layer of the terminal based on a transport block size of the first uplink grant.
2 . The method according to claim 1 , wherein that the terminal does not generate the MAC PDU for the first uplink grant is configured by using a network side or agreed upon in a protocol.
3 . The method according to claim 1 , wherein the determining an uplink transmission behavior of the terminal, further comprises:
generating the MAC PDU when a predetermined condition is not satisfied, wherein the predetermined condition comprises at least one of the followings:
a MAC entity is configured with an uplink ignore function, and an uplink grant used is scheduled by using a cell radio network temporary identity (C-RNTI), or the used uplink grant is a configured uplink grant (CG);
no channel state information (CSI) is not periodically reported on a PUSCH;
no corresponding MAC service data unit (SDU) is presented in the MAC PDU; or
the MAC PDU includes only a buffer status report (BSR), and no logical channel group has data, or the MAC PDU includes only a padding BSR.
4 . The method according to claim 1 , wherein the determining an uplink transmission behavior of the terminal further comprises:
when no uplink data is sent on the PUSCH corresponding to the first uplink grant, skipping multiplexing the first uplink control information to the PUSCH corresponding to the first uplink grant,
wherein, after the skipping multiplexing the first uplink control information to the PUSCH corresponding to the first uplink grant, further comprising:
when uplink data is sent on a PUSCH corresponding to a second uplink grant, sending the first uplink control information by using the PUSCH corresponding to the second uplink grant, wherein the terminal does not generate a MAC PDU for the second uplink grant when satisfying a predetermined condition.
5 . The method according to claim 1 , wherein the determining an uplink transmission behavior of the terminal further comprises:
in a case that no MAC PDU is generated, skipping generating the first uplink control information on a physical layer of the terminal, or discarding, by a physical layer of the terminal, the generated first uplink control information.
6 . The method according to claim 1 , further comprising:
receiving a first indication, wherein the first indication indicates that sending time of the PUSCH corresponding to the first uplink grant is different from sending time of the first uplink control information; or the first indication indicates first time and second time, wherein the first time is sending time of the PUSCH corresponding to the first uplink grant, the second time is sending time of the first uplink control information, and the first time and the second time are different.
7 . The method according to claim 1 , wherein the first uplink control information further comprises:
physical random access channel (PRACH) information.
8 . The method according to claim 7 , wherein the HARQ feedback information comprises one or more of the following:
first HARQ feedback information, wherein a priority of the first HARQ feedback information is a high priority or a low priority;
second HARQ feedback information, wherein a cell corresponding to the second HARQ feedback information is different from a cell corresponding to the PUSCH corresponding to the first uplink grant; and
third HARQ feedback information, wherein a cell corresponding to the third HARQ feedback information is the same as the cell corresponding to the PUSCH corresponding to the first uplink grant,
wherein the periodic CSI report comprises one or more of the following:
a first periodic CSI report, wherein a priority of the first periodic CSI report is a high priority or a low priority;
a second periodic CSI report, wherein a cell corresponding to the second periodic CSI report is different from a cell corresponding to the PUSCH corresponding to the first uplink grant; and
a third periodic CSI report, wherein a cell corresponding to the third periodic CSI report is the same as the cell corresponding to the PUSCH corresponding to the first uplink grant,
wherein the SR comprises one or more of the following:
a first SR, wherein a priority of the first SR is a high priority or a low priority;
a second SR, wherein a cell corresponding to the second SR is different from a cell corresponding to the PUSCH corresponding to the first uplink grant; and
a third SR, wherein a cell corresponding to the third SR is the same as the cell corresponding to the PUSCH corresponding to the first uplink grant,
wherein the PRACH information comprises one or more of the following:
first PRACH information, wherein a priority of the first PRACH information is a high priority or a low priority;
second PRACH information, wherein a cell corresponding to the second PRACH information is different from a cell corresponding to the PUSCH corresponding to the first uplink grant; and
third PRACH information, wherein a cell corresponding to the third PRACH information is the same as the cell corresponding to the PUSCH corresponding to the first uplink grant.
9 . A terminal, comprising: a memory, a processor, and a program that is stored in the memory and that can run on the processor, wherein when the program is executed by the processor, the program implements:
determining a first uplink grant; and
determining an uplink transmission behavior of the terminal,
the determining an uplink transmission behavior of the terminal, comprises:
generating a media access control protocol data unit (MAC PDU) in response to that there is first uplink control information (UCI) to be multiplexed on a physical uplink shared channel (PUSCH) transmission corresponding to the first uplink grant, and multiplexing the MAC PDU with the first uplink control information and sending the MAC PDU and the first uplink control information, wherein content of the MAC PDU is only padding;
wherein the first UCI comprises one or more of the following:
hybrid automatic repeat request (HARQ) feedback information;
a periodic channel state information (CSI) report; or
a scheduling request (SR);
wherein the determining an uplink transmission behavior of the terminal comprises:
in a case that the terminal does not generate the MAC PDU for the PUSCH corresponding to the first uplink grant, generating a dummy bit by using a physical layer of the terminal; and
multiplexing the first uplink control information with the dummy bit, and sending the first uplink control information and the dummy bit,
wherein the generating a dummy bit by using a physical layer of the terminal comprises:
generating the dummy bit by using the physical layer of the terminal based on a transport block size of the first uplink grant.
10 . The terminal according to claim 9 , wherein that the terminal does not generate the MAC PDU for the first uplink grant is configured by using a network side or agreed upon in a protocol.
11 . The terminal according to claim 9 , wherein the determining an uplink transmission behavior of the terminal, further comprises:
generating the MAC PDU when a predetermined condition is not satisfied, wherein the predetermined condition comprises at least one of the followings:
a MAC entity is configured with an uplink ignore function, and an uplink grant used is scheduled by using a cell radio network temporary identity (C-RNTI), or the used uplink grant is a configured uplink grant (CG);
no channel state information (CSI) is not periodically reported on a PUSCH;
no corresponding MAC service data unit (SDU) is presented in the MAC PDU; or
the MAC PDU includes only a buffer status report (BSR), and no logical channel group has data, or the MAC PDU includes only a padding BSR.
12 . The terminal according to claim 9 , wherein the determining an uplink transmission behavior of the terminal further comprises:
when no uplink data is sent on the PUSCH corresponding to the first uplink grant, skipping multiplexing the first uplink control information to the PUSCH corresponding to the first uplink grant,
wherein, after the skipping multiplexing the first uplink control information to the PUSCH corresponding to the first uplink grant, further comprising:
when uplink data is sent on a PUSCH corresponding to a second uplink grant, sending the first uplink control information by using the PUSCH corresponding to the second uplink grant, wherein the terminal does not generate a MAC PDU for the second uplink grant when satisfying a predetermined condition.
13 . The terminal according to claim 9 , wherein the determining an uplink transmission behavior of the terminal further comprises:
in a case that no MAC PDU is generated, skipping generating the first uplink control information on a physical layer of the terminal, or discarding, by a physical layer of the terminal, the generated first uplink control information.
14 . The terminal according to claim 9 , further comprising:
receiving a first indication, wherein the first indication indicates that sending time of the PUSCH corresponding to the first uplink grant is different from sending time of the first uplink control information; or the first indication indicates first time and second time, wherein the first time is sending time of the PUSCH corresponding to the first uplink grant, the second time is sending time of the first uplink control information, and the first time and the second time are different.
15 . The terminal according to claim 9 , wherein the first uplink control information further comprises:
physical random access channel (PRACH) information.