Method for processing data after unlicensed spectrum is released, and user equipment

1. A method for processing data after an unlicensed spectrum is released, the method comprising:

when user equipment determines that a base station has released an unlicensed spectrum, monitoring, by the user equipment, a release time for which the unlicensed spectrum is released, wherein the release time indicates a time interval from when the base station releases the unlicensed spectrum to when the base station re-acquires the unlicensed spectrum;

when the release time does not exceed a time threshold, pausing, by the user equipment, a data processing process attached to the unlicensed spectrum, and resuming the data processing process after the base station re-acquires the unlicensed spectrum; and

when the release time exceeds the time threshold, terminating, by the user equipment, the data processing process attached to the unlicensed spectrum, and selecting a licensed spectrum to start a new data processing process, or after the base station re-acquires the unlicensed spectrum, starting a new data processing process.

2. The method for processing data after an unlicensed spectrum is released according to claim 1 , wherein:

the data processing process comprises a hybrid automatic repeat request (HARQ) process;

pausing, by the user equipment, a data processing process attached to the unlicensed spectrum comprises:

executing, by the user equipment, at least one of the following operations attached to the unlicensed spectrum: pausing listening on a physical downlink control channel, pausing downlink receiving, pausing uplink sending, reserving an HARQ buffer, pausing receiving downlink HARQ retransmission, pausing receiving downlink HARQ feedback information, pausing sending uplink HARQ retransmission, or pausing sending uplink HARQ feedback information; and

resuming, by the user equipment, the data processing process after the base station re-acquires the unlicensed spectrum comprises:

after the base station re-acquires the unlicensed spectrum, executing, by the user equipment, at least one of the following operations attached to the unlicensed spectrum: resuming listening on the physical downlink control channel, resuming downlink receiving, resuming uplink sending, resuming receiving downlink HARQ retransmission, resuming receiving downlink HARQ feedback information, resuming sending uplink HARQ retransmission, or resuming sending uplink HARQ feedback information.

3. The method for processing data after an unlicensed spectrum is released according to claim 1 , wherein:

the data processing process comprises a hybrid automatic repeat request (HARQ) process;

terminating, by the user equipment, the data processing process attached to the unlicensed spectrum comprises:

executing, by the user equipment, an HARQ entity reset operation, or executing a deactivation operation for a cell using the unlicensed spectrum; and

selecting a licensed spectrum to start a new data processing process, or after the base station re-acquires the unlicensed spectrum, starting a new data processing process comprises:

selecting, by the user equipment, a licensed spectrum to start a new HARQ processing process, or after the base station re-acquires the unlicensed spectrum, starting a new HARQ processing process.

4. The method for processing data after an unlicensed spectrum is released according to claim 1 , wherein:

the data processing process comprises a random access procedure;

pausing, by the user equipment, a data processing process attached to the unlicensed spectrum comprises:

executing, by the user equipment, at least one of the following operations attached to the unlicensed spectrum: suspending a random access response window or suspending a contention resolution timer; and

resuming, by the user equipment, the data processing process after the base station re-acquires the unlicensed spectrum comprises:

after the base station re-acquires the unlicensed spectrum, executing, by the user equipment, at least one of the following operations attached to the unlicensed spectrum: resuming the random access response window or resuming running of the contention resolution timer.

5. The method for processing data after an unlicensed spectrum is released according to claim 1 , wherein:

the data processing process comprises a random access procedure;

terminating, by the user equipment, the data processing process attached to the unlicensed spectrum comprises:

executing, by the user equipment, at least one of the following operations attached to the unlicensed spectrum: stopping a random access response window and stopping waiting for a random access response message, or stopping a contention resolution timer and stopping waiting for a contention resolution message; and

selecting, by the user equipment, a licensed spectrum to start a new data processing process, or after the base station re-acquires the unlicensed spectrum, starting a new data processing process comprises:

selecting, by the user equipment, a licensed spectrum to start a new random access procedure, or after the base station re-acquires the unlicensed spectrum, starting a new random access procedure.

6. User equipment, comprising:

a memory and a processor, wherein a program stored in the memory which, when executed by the processor, causes the processor to:

when determining that a base station has released an unlicensed spectrum, monitor release time for which the unlicensed spectrum is released, wherein the release time indicates a time interval from when the base station releases the unlicensed spectrum to when the base station re-acquires the unlicensed spectrum;

when the release time does not exceed a time threshold, pause a data processing process attached to the unlicensed spectrum, and resume the data processing process after the base station re-acquires the unlicensed spectrum; and

when the release time exceeds the time threshold, terminate the data processing process attached to the unlicensed spectrum, and select a licensed spectrum to start a new data processing process, or after the base station re-acquires the unlicensed spectrum, start a new data processing process.

7. The user equipment according to claim 6 , wherein:

the data processing process comprises a hybrid automatic repeat request (HARQ) process; and

the program stored in the memory which, when executed by the processor, further causes the processor to:

execute, by the processor, at least one of the following operations attached to the unlicensed spectrum: pausing listening on a physical downlink control channel, pausing downlink receiving, pausing uplink sending, reserving an HARQ buffer, pausing receiving downlink HARQ retransmission, pausing receiving downlink HARQ feedback information, pausing sending uplink HARQ retransmission, or pausing sending uplink HARQ feedback information, and

after the base station re-acquires the unlicensed spectrum, execute, by the processor, at least one of the following operations attached to the unlicensed spectrum: resuming listening on the physical downlink control channel, resuming downlink receiving, resuming uplink sending, resuming receiving downlink HARQ retransmission, resuming receiving downlink HARQ feedback information, resuming sending uplink HARQ retransmission, or resuming sending uplink HARQ feedback information.

8. The user equipment according to claim 6 , wherein:

the data processing process comprises a hybrid automatic repeat request (HARQ) process;

the program stored in the memory which, when executed by the processor, further causes the processor to:

execute, by the processor, an HARQ entity reset operation, or execute a deactivation operation for a cell using the unlicensed spectrum, and

select, by the processor, a licensed spectrum to start a new HARQ processing process, or after the base station re-acquires the unlicensed spectrum, start a new HARQ processing process.

9. The user equipment according to claim 6 , wherein:

the data processing process comprises a random access procedure;

the program stored in the memory which, when executed by the processor, further causes the processor to:

execute, by the processor, at least one of the following operations attached to the unlicensed spectrum: suspending a random access response window or suspending a contention resolution timer, and

after the base station re-acquires the unlicensed spectrum, execute, by the processor, at least one of the following operations attached to the unlicensed spectrum: resuming the random access response window or resuming running of the contention resolution timer.

10. The user equipment according to claim 6 , wherein:

the data processing process comprises a random access procedure;

the program stored in the memory which, when executed by the processor, further causes the processor to:

execute, by the processor, at least one of the following operations attached to the unlicensed spectrum: stopping a random access response window and stopping waiting for a random access response message, or stopping a contention resolution timer and stopping waiting for a contention resolution message, and

select, by the processor, a licensed spectrum to start a new random access procedure, or after the base station re-acquires the unlicensed spectrum, start a new random access procedure.