Blind detection mode determination method, blind detection method and device

1. A method of determining a blind detection mode comprising:

an evolved Node B, eNB, determining a blind Enhanced Physical Downlink Control Channel, E-PDCCH, detection mode of a User Equipment, UE, in a sub-frame according to system configuration information, and a blind detection capability of the UE; and

the eNB notifying the UE of the determined blind E-PDCCH detection mode of the UE in the sub-frame;

wherein the eNB determining the blind E-PDCCH detection mode of the UE in the sub-frame according to the system configuration information, and the blind detection capability of the UE comprises:

the eNB determining a set of Enhanced-Control Channel Element, E-CCE, aggregation levels, at which the UE needs to perform blind E-PDCCH detection in the sub-frame, according to the system configuration information, and the blind detection capability of the UE; and

the eNB determining a number of times, that blind detection is performed, corresponding to each E-CCE aggregation level in the set of E-CCE aggregation levels.

2. The method of claim 1 , wherein the eNB determining the set of E-CCE aggregation levels, at which the UE needs to perform blind E-PDCCH detection in the sub-frame, according to the system configuration information, and the blind detection capability of the UE comprises:

the eNB determining the set of E-CCE aggregation levels, at which the UE needs to perform blind E-PDCCH detection in the sub-frame, according to results of comparing numbers of Resource Elements, REs, which can be provided at the respective E-CCE aggregation levels for transmission of E-PDCCHs with a preset threshold of a number of REs, and the blind detection capability of the UE.

3. The method of claim 1 , wherein the eNB notifying the UE of the determined blind E-PDCCH detection mode of the UE in the sub-frame comprises:

the eNB notifying the UE of a blind E-PDCCH detection mode in each sub-frame in a predetermined period of time.

4. The method of claim 3 , wherein the eNB notifying the UE of a blind E-PDCCH detection mode in each sub-frame in the predetermined period of time comprises:

the eNB grouping sub-frames in the predetermined period of time under a predetermined rule, wherein the UE performs a same blind E-PDCCH detection mode in each group of sub-frames; and

the eNB notifying the UE of the blind E-PDCCH detection mode in each group of sub-frames.

5. The method of claim 4 , wherein the eNB grouping the sub-frames in the predetermined period of time under the predetermined rule comprises:

the eNB grouping the sub-frames in the predetermined period of time into a group of normal sub-framers and another group of Downlink Pilot Time Slots, DwPTSs, under the predetermined rule.

6. A method of blind detection comprising:

a User Equipment, UE, determining a blind Enhanced Physical Downlink Control Channel, E-PDCCH, detection mode in a sub-frame, wherein the blind E-PDCCH detection mode is determined according to system configuration information, and a blind detection capability of the UE; and

the UE performing blind E-PDCCH detection in the sub-frame in the determined blind E-PDCCH detection mode;

wherein the UE determining the blind E-PDCCH detection mode in the sub-frame comprises:

the UE determining the blind E-PDCCH detection mode in the sub-frame according to the system configuration information, and the blind detection capability;

or

the UE determining the blind E-PDCCH detection mode in the sub-frame according to a notification from an evolved Node B, eNB;

wherein the UE determining the blind E-PDCCH detection mode in the sub-frame according to the system configuration information, and the blind detection capability comprises:

the UE determining a set of Enhanced-Control Channel Element, E-CCE, aggregation levels, at which the UE needs to perform blind E-PDCCH detection in the sub-frame, according to the system configuration information, and the blind detection capability; and

the UE determining a number of times, that blind detection is performed, corresponding to each E-CCE aggregation level in the set of E-CCE aggregation levels.

7. The method of claim 6 , wherein the UE determining the set of E-CCE aggregation levels, at which the UE needs to perform blind E-PDCCH detection in the sub-frame, according to the system configuration information, and the blind detection capability comprises:

the UE determining the set of E-CCE aggregation levels, at which the UE needs to perform blind E-PDCCH detection in the sub-frame, according to results of comparing numbers of Resource Elements, REs, which can be provided at the respective E-CCE aggregation levels for transmission of E-PDCCHs with a preset threshold of a number of REs, and the blind detection capability of the UE.

8. The method of claim 6 , wherein the UE determining the blind E-PDCCH detection mode in the sub-frame according to the notification from the eNB comprises:

the UE determining a blind E-PDCCH detection mode in each sub-frame in a predetermined period of time according to the notification from the eNB.

9. The method of claim 8 , wherein the UE determining a blind E-PDCCH detection mode in each sub-frame in the predetermined period of time according to the notification from the eNB comprises:

the UE grouping sub-frames in the predetermined period of time into a group of normal sub-framers and another group of Downlink Pilot Time Slots, DwPTSs under a predetermined rule; and

the UE determining a blind E-PDCCH detection mode in each group of sub-frames according to the notification from the eNB.

10. An evolved Node B, eNB, comprising:

a blind detection mode determining module configured to determine a blind Enhanced Physical Downlink Control Channel, E-PDCCH, detection mode of a User Equipment, UE, in a sub-frame according to system configuration information, and a blind detection capability of the UE; and

a blind detection mode notifying module configured to notify the UE of the determined blind E-PDCCH detection mode of the UE in the sub-frame;

wherein the blind detection mode determining module comprises:

a set of aggregation levels for blind detection determining sub-module configured to determine a set of Enhanced-Control Channel Element, E-CCE, aggregation levels, at which the UE needs to perform blind E-PDCCH detection in the sub-frame, according to the system configuration information, and the blind detection capability of the UE; and

a number of times for blind detection determining sub-module configured to determine a number of times, that blind detection is performed, corresponding to each E-CCE aggregation level in the set of E-CCE aggregation levels.

11. The eNB of claim 10 , wherein the set of aggregation levels for blind detection determining sub-module is configured:

to determine the set of E-CCE aggregation levels, at which the UE needs to perform blind E-PDCCH detection in the sub-frame, according to results of comparing numbers of Resource Elements, REs, which can be provided at the respective E-CCE aggregation levels for transmission of E-PDCCHs with a preset threshold of a number of REs, and the blind detection capability of the UE.

12. A User Equipment, UE, comprising:

a blind detection mode determining module configured to determine a blind Enhanced Physical Downlink Control Channel, E-PDCCH, detection mode in a sub-frame, wherein the blind E-PDCCH detection mode is determined according to system configuration information, and a blind detection capability of the UE; and

a blind detection performing module configured to perform blind E-PDCCH detection in the sub-frame in the determined blind E-PDCCH detection mode;

wherein the blind detection mode determining module is configured:

to determine the blind E-PDCCH detection mode in the sub-frame according to the system configuration information, and the blind detection capability;

or

to determine the blind E-PDCCH detection mode in the sub-frame according to a notification from an evolved Node B, eNB;

wherein the blind detection mode determining module configured to determine the blind E-PDCCH detection mode in the sub-frame according to the system configuration information, and the blind detection capability, comprises:

a set of aggregation levels for blind detection determining sub-module configured to determine a set of Enhanced-Control Channel Element, E-CCE, aggregation levels, at which the UE needs to perform blind E-PDCCH detection in the sub-frame, according to the system configuration information, and the blind detection capability; and

a number of times for blind detection determining sub-module configured to determine a number of times, that blind detection is performed, corresponding to each E-CCE aggregation level in the set of E-CCE aggregation levels.

13. The UE of claim 12 , wherein the set of aggregation levels for blind detection determining sub-module is configured:

to determine the set of E-CCE aggregation levels, at which the UE needs to perform blind E-PDCCH detection in the sub-frame, according to results of comparing numbers of Resource Elements, REs, which can be provided at the respective E-CCE aggregation levels for transmission of E-PDCCHs with a preset threshold of a number of REs, and the blind detection capability of the UE.

14. The UE of claim 12 , wherein the blind detection mode determining module configured to determine the blind E-PDCCH detection mode in the sub-frame according to the notification from the eNB is configured:

to determine a blind E-PDCCH detection mode in each sub-frame in a predetermined period of time according to the notification from the eNB.