Wireless communication method, terminal device, and network device

1. A wireless communication method, comprising:

receiving, by a terminal device, first information transmitted by a network device, wherein the first information is used for a timing advance (TA) adjustment, and the first information comprises a TA adjustment step size and a TA adjustment time point; and

performing, by the terminal device, the TA adjustment according to the first information and a first TA, wherein

the first information further comprises at least one of: a TA adjustment time interval, a TA adjustment trigger condition, and indication information for enabling an auxiliary uplink TA adjustment function, and

if the first TA is a TA indicated in a timing advance command (TAC) media access control-control element (MAC CE) or a TA indicated in a random access response (RAR), and the TA adjustment is a first TA adjustment, an adjusted TA is equal to a sum of the first TA and the TA adjustment step size;

if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and the TA adjustment is an i-th TA adjustment, the adjusted TA is equal to a sum of the first TA and i TA adjustment values, i being a positive integer and i>1; or

if the first TA is a TA obtained through an (i−1)-th adjustment, and the TA adjustment is the i-th TA adjustment, the adjusted TA is equal to a sum of the first TA and the TA adjustment step size, i being a positive integer and i>2.

2. The method of claim 1 , wherein the TA adjustment trigger condition comprises at least one of:

a difference between two measured positions of the terminal device being greater than a threshold, a difference between two measured reference signal receiving powers (RSRP) of the terminal device being greater than a threshold, and a speed of the terminal device being greater than a threshold.

3. The method of claim 1 , wherein the first information comprises:

at least one TA adjustment information group, at least one order of use, and at least one group identifier, wherein the at least one order of use each indicates an order of use of one of the at least one TA adjustment information group, and the TA adjustment information group comprises the TA adjustment step size, the TA adjustment time point, and at least one of:

the TA adjustment time interval, the TA adjustment trigger condition, and the indication information for enabling an auxiliary uplink TA adjustment function.

4. The method of claim 3 , further comprising:

determining, by the terminal device, a first order of use among the at least one order of use according to group information or a group identifier corresponding to the terminal device.

5. The method of claim 1 , wherein the first information comprises:

at least one TA adjustment information group and a TA adjustment order, wherein the TA adjustment order indicates an order of use of the at least one TA adjustment information group, and the TA adjustment information group comprises the TA adjustment step size, the TA adjustment time point, and at least one of:

the TA adjustment time interval, the TA adjustment trigger condition, and the indication information for enabling an auxiliary uplink TA adjustment function.

6. The method of claim 5 , further comprising:

performing, by the terminal device, the TA adjustment according to the at least one TA adjustment information group, the TA adjustment order, and the first TA.

7. The method of claim 1 , further comprising:

performing, by the terminal device, the TA adjustment according to the first information and the first TA within a duration of a first timer.

8. The method of claim 1 , further comprising:

transmitting, by the terminal device, first indication information to the network device, wherein the first indication information indicates that the terminal device has a TA adjustment capability.

9. The method of claim 1 , further comprising:

ignoring or skipping, by the terminal device, the first information if the terminal device does not have a TA adjustment capability.

10. A wireless communication method, comprising:

transmitting, by a network device, first information to a terminal device, wherein the first information is used for a timing advance (TA) adjustment, the first information comprises a TA adjustment step size and a TA adjustment time point, and the first information and a first TA are used for the terminal device to perform the TA adjustment, wherein

the first information further comprises at least one of: a TA adjustment time interval, a TA adjustment trigger condition, and indication information for enabling an auxiliary uplink TA adjustment function, and

if the first TA is a TA indicated in a timing advance command (TAC) media access control-control element (MAC CE) or a TA indicated in a random access response (RAR), and the TA adjustment is a first TA adjustment, an adjusted TA is equal to a sum of the first TA and the TA adjustment step size;

if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and the TA adjustment is an i-th TA adjustment, the adjusted TA is equal to a sum of the first TA and i TA adjustment values, i being a positive integer and i>1; or

if the first TA is a TA obtained through an (i−1)-th adjustment, and the TA adjustment is the i-th TA adjustment, the adjusted TA is equal to a sum of the first TA and the TA adjustment step size, i being a positive integer and i>2.

11. The method of claim 10 , wherein the first information comprises:

at least one TA adjustment information group, at least one order of use, and at least one group identifier, wherein the at least one order of use each indicates an order of use of one of the at least one TA adjustment information group, and the TA adjustment information group comprises the TA adjustment step size, the TA adjustment time point, and at least one of:

the TA adjustment time interval, the TA adjustment trigger condition, and the indication information for enabling an auxiliary uplink TA adjustment function.

12. A terminal device, comprising:

a processor;

a transceiver; and

a memory configured to store computer programs;

wherein the processor is configured to execute the computer programs stored in the memory to:

cause the transceiver to receive first information transmitted by a network device, wherein the first information is used for a timing advance (TA) adjustment, and the first information comprises a TA adjustment step size and a TA adjustment time point; and

perform the TA adjustment according to the first information and a first TA, wherein

the first information further comprises at least one of: a TA adjustment time interval, a TA adjustment trigger condition, and indication information for enabling an auxiliary uplink TA adjustment function, and

if the first TA is a TA indicated in a timing advance command (TAC) media access control-control element (MAC CE) or a TA indicated in a random access response (RAR), and the TA adjustment is a first TA adjustment, an adjusted TA is equal to a sum of the first TA and the TA adjustment step size;

if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and the TA adjustment is an i-th TA adjustment, the adjusted TA is equal to a sum of the first TA and i TA adjustment values, i being a positive integer and i>1; or

if the first TA is a TA obtained through an (i−1)-th adjustment, and the TA adjustment is the i-th TA adjustment, the adjusted TA is equal to a sum of the first TA and the TA adjustment step size, i being a positive integer and i>2.

13. The terminal device of claim 12 , wherein the first information comprises:

at least one TA adjustment information group, at least one order of use, and at least one group identifier, wherein the at least one order of use each indicates an order of use of one of the at least one TA adjustment information group, and the TA adjustment information group comprises the TA adjustment step size, the TA adjustment time point, and at least one of:

the TA adjustment time interval, the TA adjustment trigger condition, and the indication information for enabling an auxiliary uplink TA adjustment function.

14. The terminal device of claim 13 , the processor is further configured to:

determine a first order of use among the at least one order of use according to group information or a group identifier corresponding to the terminal device.

15. The terminal device of claim 12 , wherein the first information comprises:

at least one TA adjustment information group and a TA adjustment order, wherein the TA adjustment order indicates an order of use of the at least one TA adjustment information group, and the TA adjustment information group comprises the TA adjustment step size, the TA adjustment time point, and at least one of:

the TA adjustment time interval, the TA adjustment trigger condition, and the indication information for enabling an auxiliary uplink TA adjustment function.

16. The terminal device of claim 15 , the processor is further configured to:

perform the TA adjustment according to the at least one TA adjustment information group, the TA adjustment order, and the first TA.

17. The terminal device of claim 12 , wherein the TA adjustment trigger condition comprises at least one of:

a difference between two measured positions of the terminal device being greater than a threshold, a difference between two measured reference signal receiving powers (RSRP) of the terminal device being greater than a threshold, and a speed of the terminal device being greater than a threshold.

18. The terminal device of claim 12 , the processor is further configured to:

perform the TA adjustment according to the first information and the first TA within a duration of a first timer.

19. A network device, comprising:

a processor;

a transceiver; and

a memory configured to store computer programs;

wherein the processor is configured to execute the computer programs stored in the memory to cause the transceiver to:

transmit first information to a terminal device, wherein the first information is used for a timing advance (TA) adjustment, the first information comprises a TA adjustment step size and a TA adjustment time point, and the first information and a first TA are used for the terminal device to perform the TA adjustment, wherein

the first information further comprises at least one of: a TA adjustment time interval, a TA adjustment trigger condition, and indication information for enabling an auxiliary uplink TA adjustment function, and

if the first TA is a TA indicated in a timing advance command (TAC) media access control-control element (MAC CE) or a TA indicated in a random access response (RAR), and the TA adjustment is a first TA adjustment, an adjusted TA is equal to a sum of the first TA and the TA adjustment step size;

if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and the TA adjustment is an i-th TA adjustment, the adjusted TA is equal to a sum of the first TA and i TA adjustment values, i being a positive integer and i>1; or

if the first TA is a TA obtained through an (i−1)-th adjustment, and the TA adjustment is the i-th TA adjustment, the adjusted TA is equal to a sum of the first TA and the TA adjustment step size, i being a positive integer and i>2.

20. The network device of claim 19 , wherein the first information comprises:

at least one TA adjustment information group, at least one order of use, and at least one group identifier, wherein the at least one order of use each indicates an order of use of one of the at least one TA adjustment information group, and the TA adjustment information group comprises the TA adjustment step size, the TA adjustment time point, and at least one of:

the TA adjustment time interval, the TA adjustment trigger condition, and the indication information for enabling an auxiliary uplink TA adjustment function.