Repeat transmission processing method and apparatus, terminal, and network side device

1 . A repeat transmission processing method, comprising:

obtaining, by a terminal, first information;

determining, by the terminal, at least one transmission gap in a first repeat transmission process according to the first information;

performing, by the terminal, a first operation in a transmission gap,

wherein a transmission type of the first operation in the transmission gap comprises timing advance (TA) compensation; and

in a case that the transmission type of the first operation comprises TA compensation, the performing, by the terminal, the first operation in the transmission gap comprises:

calculating, by the terminal, a TA value of a service link according to a positioning capability and an ephemeris;

calculating, by the terminal, a TA value of a feedback link by using a TA change rate; and

performing, by the terminal, TA compensation according to the TA value of the service link and the TA value of the feedback link, wherein a compensated TA value takes effect when the transmission gap ends.

2 . The repeat transmission processing method according to claim 1 , wherein the obtaining, by a terminal, first information comprises:

obtaining, by the terminal, the first information in a first manner, wherein the first manner comprises at least one of following:

a network preconfiguration;

a radio resource control (RRC) configuration;

a downlink control information (DCI) configuration; or

a medium access control control element (MAC CE) configuration.

3 . The repeat transmission processing method according to claim 1 , wherein the first information comprises at least one of following:

enabling information of the transmission gap;

time domain offset information of the transmission gap in the first repeat transmission process;

period information of the transmission gap in the first repeat transmission process;

a time domain resource length of the transmission gap in the first repeat transmission process;

a quantity of the transmission gap in the first repeat transmission process;

the transmission type of the first operation in the transmission gap; or

time domain resource information of the first operation in the transmission gap.

4 . The repeat transmission processing method according to claim 3 , wherein the transmission type of the first operation in the transmission gap further comprises at least one of following:

downlink synchronization;

monitoring a physical downlink control channel (PDCCH);

uplink synchronization;

random access;

cell reselection;

cell switching;

beam switching; or

a feedback of completed repeat transmission.

5 . The repeat transmission processing method according to claim 4 , wherein in a case that the transmission type of the first operation comprises downlink synchronization, the time domain resource length of the transmission gap is greater than or equal to a time length required for switching between uplink and downlink.

6 . The repeat transmission processing method according to claim 4 , wherein

in a case that the transmission type of the first operation comprises uplink synchronization or downlink synchronization, the performing, by the terminal, a first operation in the transmission gap comprises:

calculating, by the terminal, a frequency offset value of a service link according to a positioning capability and ephemeris information; and

performing, by the terminal, pre-compensation on a frequency offset from a terminal to a satellite and a frequency offset from the satellite to a base station according to the frequency offset value of the service link and a frequency offset value of a feedback link indicated by a network; or performing, by the terminal, pre-compensation on a frequency offset from a terminal to a satellite according to the frequency offset value of the service link;

or

in a case that the transmission type of the first operation comprises beam switching, the performing, by the terminal, a first operation in the transmission gap comprises:

in response to RRC connection release signaling triggered by a network, entering, by the terminal, an RRC idle state from an RRC connected state, and suspending the first repeat transmission process;

selecting, by the terminal, an optimal beam, executing a random access process, and reporting the optimal beam to the network in the random access process; and

determining, by the terminal, according to an indication of the network, a beam to which the terminal is to be switched, and switching to a beam indicated by the network;

or

in a case that the transmission type of the first operation comprises a feedback of completed repeat transmission, the performing, by the terminal, a first operation in the transmission gap comprises:

switching, by the terminal, to a downlink to receive reception feedback information that is of repeat transmission and that is sent by a network; and

if the reception feedback information is an acknowledgement feedback, stopping, by the terminal, the first repeat transmission process after the first operation ends; or if the reception feedback information is a negative acknowledgement feedback, continuing, by the terminal, the first repeat transmission process after the first operation ends.

7 . The repeat transmission processing method according to claim 4 , wherein in a case that the transmission type of the first operation comprises at least one of random access, cell reselection, cell switching, or beam switching,

if the terminal has completed random access, stopping, by the terminal, the first repeat transmission process after the first operation ends;

or

if the terminal has completed cell reselection, stopping, by the terminal, the first repeat transmission process after the first operation ends.

8 . A repeat transmission processing method, comprising:

sending, by a network side device, first information, wherein the first information is used to indicate at least one transmission gap in a first repeat transmission process;

performing, by the network side device, a second operation corresponding to a first operation in a transmission gap,

wherein a transmission type of the first operation in the transmission gap comprises timing advance (TA) compensation; and

in a case that the transmission type of the first operation comprises TA compensation, the performing, by the network side device, the second operation corresponding to the first operation in the transmission gap comprises:

calculating, by the network side device, a TA value of a feedback link by using a TA change rate or ephemeris information, and feeding back the TA value of the feedback link to a terminal, so that the terminal performs TA compensation according to a TA value of a service link and the TA value of the feedback link, wherein a compensated TA value takes effect when the transmission gap ends.

9 . The repeat transmission processing method according to claim 8 , wherein the first information comprises at least one of the following:

enabling information of the transmission gap;

time domain offset information of the transmission gap in the first repeat transmission process;

period information of the transmission gap in the first repeat transmission process;

a time domain resource length of the transmission gap in the first repeat transmission process;

a quantity of the transmission gap in the first repeat transmission process;

the transmission type of the first operation in the transmission gap; or

time domain resource information of the first operation in the transmission gap.

10 . The repeat transmission processing method according to claim 9 , wherein the transmission type of the first operation in the transmission gap further comprises at least one of following:

downlink synchronization;

monitoring a physical downlink control channel (PDCCH);

uplink synchronization;

random access;

cell reselection;

cell switching;

beam switching; or

a feedback of completed repeat transmission.

11 . The repeat transmission processing method according to claim 10 , wherein

in a case that the transmission type of the first operation comprises uplink synchronization or downlink synchronization, the performing, by the network side device, a second operation corresponding to a first operation in the transmission gap comprises:

calculating, by the network side device, a frequency offset value of a feedback link, and feeding back the frequency offset value of the feedback link to a terminal, so that the terminal performs pre-compensation on a frequency offset from the terminal to a satellite and a frequency offset from the satellite to a base station according to a frequency offset value of a service link and the frequency offset value of the feedback link;

or

calculating, by the network side device, a frequency offset value of a feedback link, and performing post-compensation on a frequency offset from a satellite to a base station according to the frequency offset value of the feedback link;

or

in a case that the transmission type of the first operation comprises beam switching, the performing, by the network side device, a second operation corresponding to a first operation in the transmission gap comprises:

sending, by the network side device, RRC connection release signaling to a terminal, to instruct the terminal to enter an RRC idle state from an RRC connected state and suspend the first repeat transmission process;

receiving, by the network side device, an optimal beam reported by the terminal in a random access process; and

indicating, by the network side device to the terminal according to the optimal beam, a beam to which the terminal is to be switched;

or

in a case that the transmission type of the first operation comprises a feedback of completed repeat transmission, the performing, by the network side device, a second operation corresponding to a first operation in the transmission gap comprises:

sending, by the network side device, reception feedback information of repeat transmission to a terminal; and

if the reception feedback information is an acknowledgement feedback, stopping, by the network side device, the first repeat transmission process after the first operation ends; or if the reception feedback information is a negative acknowledgement feedback, continuing, by the network side device, the first repeat transmission process after the first operation ends.

12 . A terminal, comprising a processor, a memory, and a program or an instruction that is stored in the memory and executable on the processor, wherein the program or the instruction, when executed by the processor, causes the terminal to perform:

obtaining first information;

determining at least one transmission gap in a first repeat transmission process according to the first information;

performing a first operation in a transmission gap,

wherein a transmission type of the first operation in the transmission gap comprises timing advance (TA) compensation; and

in a case that the transmission type of the first operation comprises TA compensation, the program or the instruction, when executed by the processor, causes the terminal to perform:

calculating a TA value of a service link according to a positioning capability and an ephemeris:

calculating a TA value of a feedback link by using a TA change rate; and

performing TA compensation according to the TA value of the service link and the TA value of the feedback link, wherein a compensated TA value takes effect when the transmission gap ends.

13 . The terminal according to claim 12 , wherein the first information comprises at least one of following:

enabling information of the transmission gap;

time domain offset information of the transmission gap in the first repeat transmission process;

period information of the transmission gap in the first repeat transmission process;

a time domain resource length of the transmission gap in the first repeat transmission process;

a quantity of the transmission gap in the first repeat transmission process;

the transmission type of the first operation in the transmission gap; or

time domain resource information of the first operation in the transmission gap.

14 . The terminal according to claim 13 , wherein the transmission type of the first operation in the transmission gap further comprises at least one of following:

downlink synchronization;

monitoring a physical downlink control channel (PDCCH);

uplink synchronization;

random access;

cell reselection;

cell switching;

beam switching; or

a feedback of completed repeat transmission.

15 . The terminal according to claim 14 , wherein

in a case that the transmission type of the first operation comprises uplink synchronization or downlink synchronization, the program or the instruction, when executed by the processor, causes the terminal to perform:

calculating a frequency offset value of a service link according to a positioning capability and ephemeris information; and

performing pre-compensation on a frequency offset from a terminal to a satellite and a frequency offset from the satellite to a base station according to the frequency offset value of the service link and a frequency offset value of a feedback link indicated by a network; or performing pre-compensation on a frequency offset from a terminal to a satellite according to the frequency offset value of the service link;

or

in a case that the transmission type of the first operation comprises beam switching, the program or the instruction, when executed by the processor, causes the terminal to perform:

in response to RRC connection release signaling triggered by a network, entering an RRC idle state from an RRC connected state, and suspending the first repeat transmission process;

selecting an optimal beam, executing a random access process, and reporting the optimal beam to the network in the random access process; and

determining according to an indication of the network, a beam to which the terminal is to be switched, and switching to a beam indicated by the network;

or

in a case that the transmission type of the first operation comprises a feedback of completed repeat transmission, the program or the instruction, when executed by the processor, causes the terminal to perform:

switching to a downlink to receive reception feedback information that is of repeat transmission and that is sent by a network; and

if the reception feedback information is an acknowledgement feedback, stopping the first repeat transmission process after the first operation ends; or if the reception feedback information is a negative acknowledgement feedback, continuing the first repeat transmission process after the first operation ends.

16 . A network side device, comprising a processor, a memory, and a program or an instruction that is stored in the memory and executable on the processor, wherein the program or the instruction, when executed by the processor, causes the network side device to perform step of the repeat transmission processing method according claim 8 .

17 . A network side device, comprising a processor, a memory, and a program or an instruction that is stored in the memory and executable on the processor, wherein the program or the instruction, when executed by the processor, causes the network side device to perform step of the repeat transmission processing method according claim 9 .

18 . A network side device, comprising a processor, a memory, and a program or an instruction that is stored in the memory and executable on the processor, wherein the program or the instruction, when executed by the processor, causes the network side device to perform step of the repeat transmission processing method according claim 10 .

19 . A network side device, comprising a processor, a memory, and a program or an instruction that is stored in the memory and executable on the processor, wherein the program or the instruction, when executed by the processor, causes the network side device to perform step of the repeat transmission processing method according claim 11 .

20 . The terminal according to claim 12 , wherein the program or the instruction, when executed by the processor, further causes the terminal to perform:

obtaining the first information in a first manner, wherein the first manner comprises at least one of following:

a network preconfiguration;

a radio resource control (RRC) configuration;

a downlink control information (DCI) configuration; or

a medium access control control element (MAC CE) configuration.