Method and apparatus for transmission mode conversion

1. A method for transmission mode conversion, comprising:

detecting, by a terminal, that a first transmission mode can be used for sending data, and using, by the terminal, the first transmission mode to send the data;

stopping using, by the terminal, the first transmission mode to send the data and using a second transmission mode to send the data after a first preset time, in response to detecting that the first transmission mode cannot be used, wherein the first preset time balances a number of terminals that send data using the second transmission mode;

detecting that the first transmission mode can be used while the terminal uses the second transmission mode to send the data; and

stopping using, by the terminal, the second transmission mode to send the data, and using the first transmission mode to send the data, in response to detecting that the first transmission mode can be used while the terminal uses the second transmission mode to send the data;

wherein:

using the first transmission mode to send the data refers to the terminal sending the data through a first communications resource allocated by a base station, and

using the second transmission mode to send the data refers to the terminal sending the data through a second communications resource selected in a resource pool configured by the base station, or the terminal sending the data through an inherent third communications resource.

2. The method according to claim 1 , wherein the stopping using, by the terminal, the first transmission mode to send the data and using the second transmission mode to send the data after the first preset time, in response to detecting that the first transmission mode cannot be used, comprises:

in response to determining that the terminal cannot acquire the first communications resource from the base station, determining, by the terminal, that the first transmission mode cannot be used, stopping using the first transmission mode to send the data, and using the second transmission mode to send the data after the first preset time; or,

in response to determining that the first communications resource acquired by the terminal from the base station cannot be used, determining, by the terminal, that the first transmission mode cannot be used, stopping using the first transmission mode to send the data, and using the second transmission mode to send the data after the first preset time.

3. The method according to claim 1 , before the using, by the terminal, the second transmission mode to send the data, further comprising:

detecting, by the terminal, whether the terminal is within network coverage of the base station, in response to detecting that the first transmission mode cannot be used; and

acquiring, by the terminal, the inherent third communications resource, in response to determining that the terminal is not within the network coverage of the base station;

wherein the using, by the terminal, the second transmission mode to send the data, comprises using, by the terminal, the second transmission mode to send the data through the inherent third communications resource.

4. The method according to claim 2 ,

wherein before detecting, by the terminal, that the first transmission mode for sending data can be used to send the data, and using, by the terminal, the first transmission mode to send the data, the method further comprising:

establishing, by the terminal, a wireless connection with the base station;

acquiring the first communications resource allocated by the base station; and

using the first transmission mode to send the data through the first communications resource; and

wherein, in response to determining that the first communications resource acquired by the terminal from the base station cannot be used, determining, by the terminal, that the first transmission mode cannot be used to send the data, stopping using the first transmission mode to send the data, and using the second transmission mode to send the data after the first preset time, comprises:

in response to detecting that the wireless connection fails, determining, by the terminal, that the first transmission mode cannot be used to send the data, stopping using the first transmission mode to send the data, and using the second transmission mode to send the data after the first preset time.

5. The method according to claim 2 ,

wherein the detecting, by the terminal, that the first transmission mode for sending data can be used to send the data, and using, by the terminal, the first transmission mode to send the data comprises:

establishing, by the terminal, a wireless connection with the base station; and

sending a scheduling request to the base station, wherein the scheduling request is used to request allocation of a cellular uplink resource; and

wherein, in response to determining that the terminal cannot acquire the first communications resource from the base station, determining, by the terminal, that the first transmission mode cannot be used to send the data, stopping using the first transmission mode to send the data, and using the second transmission mode to send the data after the first preset time, comprises:

in response to determining that a number of transmission times of the scheduling request exceeds a preset number of times, and the base station does not allocate the cellular uplink resource, determining, by the terminal, that the first transmission mode cannot be used to send the data, stopping using the first transmission mode to send the data, and using the second transmission mode to send the data after the first preset time.

6. The method according to claim 2 , further comprising:

determining that the terminal camps on a target cell and locates at an edge of the target cell, wherein the target cell belongs to the base station,

wherein the detecting, by the terminal, that the first transmission mode for sending data can be used to send the data, and using, by the terminal, the first transmission mode to send the data comprises:

sending, by the terminal, a connection establishment request to the base station, wherein the connection establishment request is used to establish a wireless connection;

wherein, in response to determining that the terminal cannot acquire the first communications resource from the base station, determining, by the terminal, that the first transmission mode cannot be used to send the data, stopping using the first transmission mode to send the data, and using the second transmission mode to send the data after the first preset time, comprises:

in response to determining that a number of transmission times of the connection establishment request exceeds preset number of times, and no response message sent by the base station is received, determining, by the terminal, that the first transmission mode cannot be used to send the data, stopping using the first transmission mode to send the data, and using the second transmission mode to send the data after the first preset time.

7. The method according to claim 6 , wherein, the stopping using, by the terminal, the second transmission mode to send the data, and using the first transmission mode to send the data, in response to detecting that the first transmission mode can be used while the terminal uses the second transmission mode to send the data, comprises:

continuing sending, by the terminal, the connection establishment request to the base station while the terminal uses the second transmission mode to send the data;

after the wireless connection is established successfully, and the base station allocates the first communications resource for the terminal, determining, by the terminal, that the first transmission mode can be used to send the data; and

stopping using, by the terminal, the second transmission mode to send the data, and using the first transmission mode to send the data.

8. An apparatus for transmission mode conversion, comprising:

a processor, configured to detect whether a first transmission mode for sending data can be used to send the data; and

a transmitter, configured to:

use the first transmission mode to send the data in response to the processor detecting that the first transmission mode can be used to send the data;

stop using the first transmission mode to send the data and use a second transmission mode to send the data after a first preset time, in response to detecting that the first transmission mode cannot be used, wherein the first preset time balances a number of terminals that send data using the second transmission mode;

in response to the processor detecting that the first transmission mode can be used to send the data while the second transmission mode is used to send the data, stop using the second transmission mode to send the data, and use the first transmission mode to send the data;

wherein the first transmission mode refers to that the apparatus sends the data through a first communications resource allocated by the base station; and

wherein the second transmission mode refers to that the apparatus sends the data through a second communications resource selected in a resource pool configured by the base station, or that the apparatus sends the data through an inherent third communications resource.

9. The apparatus according to claim 8 , wherein:

in response to the processor determining that the first communications resource cannot be acquired from the base station, the processor determines that the first transmission mode cannot be used and causes the transmitter to stop using the first transmission mode to send the data, and the transmitter uses the second transmission mode to send the data after the first preset time.

10. The apparatus according to claim 8 , wherein:

the processor is further configured to, in response to detecting that the first transmission mode cannot be used to send the data, detect whether the apparatus is within network coverage of the base station;

the processor is further configured to, in response to determining that the apparatus is not within the network coverage of the base station, acquire the inherent third communications resource of the apparatus; and

the transmitter is configured to use the second transmission mode to send the data through the third communications resource.

11. The apparatus according to claim 9 , wherein:

the processor is further configured to establish a wireless connection with the base station, acquire the first communications resource allocated by the base station, and the transmitter is configured to use the first transmission mode to send the data through the first communications resource; and

wherein:

the processor is configured to, when it is detected that the wireless connection fails, determine that the first transmission mode cannot be used to send the data, and the transmitter is configured to stop using the first transmission mode to send the data and use the second transmission mode to send the data after the first preset time.

12. The apparatus according to claim 9 , wherein:

the processor is configured to establish a wireless connection with the base station, and the transmitter is configured to send a scheduling request to the base station, wherein the scheduling request is used to request allocation of a cellular uplink resource; and

the processor is configured to, when a number of transmission times of the scheduling request exceeds a preset number of times and the base station does not allocate the cellular uplink resource, determine that the first transmission mode cannot be used, and stop using the first transmission mode to send the data, and the transmitter is configured to use the second transmission mode to send the data after a first preset time.

13. The apparatus according to claim 12 , wherein:

the processor is configured to, while the apparatus uses the second transmission mode to send data, detect whether the base station allocates the cellular uplink resource for the apparatus through reconfiguration; and

the transmitter is configured to, in response to the processor detecting that the base station allocates the cellular uplink resource for the apparatus through the reconfiguration, stop using the second transmission mode to send the data, and use the first transmission mode to send the data.

14. The apparatus according to claim 9 , wherein:

the transmitter is configured to continue sending the wireless connection request to the base station while the apparatus uses the second transmission mode to send the data;

the processor is configured to, after the wireless connection is established successfully and the base station allocates the first communications resource for the, determine that the first transmission mode can be used to send the data; and

the transmitter is configured to stop using the second transmission mode to send the data and use the first transmission mode to send the data.

15. The apparatus according to claim 8 , wherein:

the processor is configured to perform cell selection;

the processor is configured to, in response to detecting that the apparatus camps on a target cell, acquire a broadcast message sent by the base station, wherein the broadcast message comprises a selecting condition used to instruct the apparatus to perform transmission mode selection, and wherein the target cell belongs to the base station;

the processor is configured to, in response to determining that the selecting condition satisfies a selecting condition of the first transmission mode, establish a wireless connection with the base station, and acquire the first communications resource allocated by the base station; and

the transmitter is configured to use the first transmission mode to send the data.

16. The apparatus according to claim 8 , wherein:

in response to the processor determining that the first communications resource acquired from the base station cannot be used, the processor determines that the first transmission mode cannot be used and causes the transmitter to stop using the first transmission mode to send the data, and the transmitter uses the second transmission mode to send the data after the first preset time.