Method and apparatus for data transmission

1. A method for data transmission, comprising:

receiving, by a user equipment (UE), a switch indication, wherein the switch indication is used for directing the UE to transmit data which has not been transmitted by using a second transmission mode; and

sending, by the UE, a mode switch request message to an application server, wherein the mode switch request message is used for requesting a network side to transmit the data which has not been transmitted by using the second transmission mode;

receiving, by the UE, radio resource control connection reconfiguration information sent by a base station when the base station is transmitting data by using a first radio bearer;

obtaining, by the UE, a second radio bearer according to the radio resource control connection reconfiguration information, wherein a quality of service parameter of the second radio bearer is different from a quality of service parameter of the first radio bearer, wherein the quality of service parameter of the first radio bearer supports a first transmission mode, and the quality of service parameter of the second radio bearer supports the second transmission mode;

sending, by the UE, radio resource control connection reconfiguration completion information to the base station; and

transmitting, by the UE, the data which has not been transmitted by using the second radio bearer,

wherein the first transmission mode is an adaptive streaming mode in hyper text transfer protocol (HTTP), and the second transmission mode is a progressive download mode in HTTP.

2. The method of claim 1 , wherein the radio resource control connection reconfiguration information comprises information of establishing the second radio bearer, the information of establishing the second radio bearer comprises the quality of service parameter of the second radio bearer, and

wherein the obtaining, by the UE, a second radio bearer, comprises:

establishing and activating, by the UE, the second radio bearer according to the quality of service parameter of the second radio bearer.

3. The method of claim 1 , wherein the radio resource control connection reconfiguration information comprises information of modifying the first radio bearer, the information of modifying the first radio bearer comprises the quality of service parameter of the second radio bearer, and the obtaining, by the UE, a second radio bearer, comprises:

modifying, by the UE, the first radio bearer according to the quality of service parameter of the second radio bearer, wherein the second radio bearer is the modified first radio bearer.

4. The method of claim 1 , wherein the mode switch request message comprises the quality of service parameter of the second radio bearer, and the method further comprises:

constructing, by the UE, the quality of service parameter of the second radio bearer according to different media quality types of the second transmission mode selected by a user.

5. The method of claim 4 , further comprising:

receiving, by the UE, a mode switch response message sent by an application function (AF), wherein the mode switch response message is used for indicating mode switch completion.

6. An apparatus for data transmission, comprising a receiver, a memory, a processor and a transmitter, wherein:

the receiver is configured to receive a switch indication, wherein the switch indication is used for directing the UE to transmit data which has not been transmitted by using a second transmission mode;

the transmitter is configured to send a mode switch request message to an application server, wherein the mode switch request message is used for requesting a network side to transmit the data which has not been transmitted by using the second transmission mode;

the receiver is further configured to receive radio resource control connection reconfiguration information sent by a base station when transmitting data by using a first radio bearer;

the memory is configured to store information including a program routine,

the processor is coupled with the memory, the receiver and the transmitter and is configured to control the implementation of the program routine, including obtaining a second radio bearer according to the radio resource control connection reconfiguration information, wherein a quality of service parameter of the second radio bearer is different from a quality of service parameter of the first radio bearer, wherein the quality of service parameter of the first radio bearer supports a first transmission mode, and the quality of service parameter of the second radio bearer supports the second transmission mode;

the transmitter is configured to send radio resource control connection reconfiguration completion information to the base station; and

the transmitter is further configured to transmit the data which has not been transmitted by using the second radio bearer, and

wherein the first transmission mode is an adaptive streaming mode in hyper text transfer protocol (HTTP), and the second transmission mode is a progressive download mode in HTTP.

7. The apparatus of claim 6 , wherein the radio resource control connection reconfiguration information comprises information of establishing the second radio bearer, and the information of establishing the second radio bearer comprises the quality of service parameter of the second radio bearer; and

the processor is configured to establish and activate the second radio bearer according to the quality of service parameter of the second radio bearer.

8. The apparatus of claim 6 , wherein the radio resource control connection reconfiguration information comprises information of modifying the first radio bearer, and the information of modifying the first radio bearer comprises the quality of service parameter of the second radio bearer; and

the processor is configured to modify the first radio bearer according to the quality of service parameter of the second radio bearer, wherein the second radio bearer is the modified first radio bearer.

9. The apparatus of claim 8 , wherein the mode switch request message comprises the quality of service parameter of the second radio bearer, and the processor is further configured to construct the quality of service parameter of the second radio bearer according to different media quality types of the second transmission mode selected by a user.

10. The apparatus of claim 9 , wherein

the receiver is further configured to receive a mode switch response message sent by an application function (AF), wherein the mode switch response message is used for indicating mode switch completion.

11. An apparatus for data transmission, comprising a memory, a processor, and a transmitter, wherein

the memory is configured to store information including a program routine;

the processor is coupled with the memory and the transmitter and is configured to control an implementation of the program routine including obtaining a mode switch request message sent by a user equipment (UE) when the UE transmits data by using a first transmission mode, wherein the mode switch request message is used for requesting a network side to transmit a part of the data which has not been transmitted by using a second transmission mode;

the processor is further configured to determine a quality of service parameter of a bearer supporting the second transmission mode according to the mode switch request message, wherein the quality of service parameter of the bearer supporting the second transmission mode is different from a quality of service parameter of a first core network bearer supporting the first transmission mode; and

the transmitter is configured to send session information to a policy and charging rules function (PCRF), wherein the session information comprises the quality of service parameter of the bearer supporting the second transmission mode and an indication of changing a core network bearer used for transmitting the part of the data which has not been transmitted from the first core network bearer into the bearer supporting the second transmission mode.

12. The apparatus of claim 11 , wherein the indication of changing the core network bearer used for transmitting the part of the data which has not been transmitted from the first core network bearer into the bearer supporting the second transmission mode, comprises:

an indication of modifying the quality of service parameter of the first core network bearer into the quality of service parameter of the bearer supporting the second transmission mode, wherein the modified first core network bearer is used for transmitting the part of the data which has not been transmitted by using a second radio bearer.

13. The apparatus of claim 11 , wherein the indication of changing a core network bearer used for transmitting the part of the data which has not been transmitted from the first core network bearer into the bearer supporting the second transmission mode, comprises:

an indication of establishing a second core network bearer by using the quality of service parameter of the bearer supporting the second transmission mode, wherein the second core network bearer is used for transmitting the part of the data which has not been transmitted by using the second radio bearer.

14. The apparatus of claim 11 , further comprising:

a receiver, configured to receive a session information response message from the PCRF, wherein the session information response message is used for indicating that the core network bearer used for transmitting the part of the data which has not been transmitted has been changed from the first core network bearer into the bearer supporting the second transmission mode; and

the transmitter is further configured to send a mode switch response message to the UE, wherein the mode switch response message is used for indicating mode switch completion.