Electronic device in wireless communication system and wireless communication method

1. An electronic device in a wireless communication system, the wireless communication system comprising a plurality of unauthorized carriers, and the electronic device comprising:

one or more processing circuits configured to perform operations of:

acquiring information on channel detection parameters from a base station;

pre-estimating power consumption information of a first channel detection process and a second channel detection process, the second channel detection process being different from the first channel detection process;

acquiring power status information of the electronic device;

determining whether each of the plurality of unauthorized carriers is a primary channel or a secondary channel to obtain at least two primary channels and at least one secondary channel based on the pre-estimated power consumption information and the power status information;

configuring channel detection parameters for the at least two primary channels and the at least one secondary channel based on the information on channel detection parameters;

performing the first channel detection process on each of the primary channels to detect whether each of the primary channels is idle, and performing the second channel detection process on the secondary channel to detect whether the secondary channel is idle; and

performing uplink data transmission on the primary channel which is detected to be idle by the channel detection or the primary channel and the secondary channel which are detected to be idle by the channel detection.

2. The electronic device according to claim 1 , wherein the first channel detection process is energy detection comprising random backoff and a variable contention window size.

3. The electronic device according to claim 1 , wherein the second channel detection process is energy detection excluding random backoff.

4. The electronic device according to claim 1 , wherein, when the second channel detection process is performed on each of the secondary channels, the processing circuits are further configured to perform an operation of:

triggering the secondary channel to perform the second channel detection process when detecting that a primary channel which is to finish the first channel detection process firstly is idle.

5. The electronic device according to claim 4 , wherein the processing circuits are further configured to perform an operation of:

triggering the secondary channel to perform the second channel detection process when detecting that the primary channel which is to finish the first channel detection process firstly is occupied, and a primary channel which is to finish the first channel detection process secondly is idle.

6. The electronic device according to claim 5 , wherein the processing circuits are further configured to perform operations of:

when detecting that the primary channel which is to finish the first channel detection process secondly is occupied, searching for continuously a next primary channel which is to finish the first channel detection process and is idle, and triggering the secondary channel to perform the second channel detection process until there is no new primary channel which is to finish the first channel detection process and is idle.

7. The electronic device according to claim 6 , wherein the processing circuits are further configured to perform an operation of:

performing no uplink data transmission on the plurality of unauthorized carriers when detecting that a primary channel which is to finish the first channel detection process lastly is occupied.

8. The electronic device according to claim 1 , wherein ending time of the channel detection processes of the primary channel and the secondary channel is aligned, and the primary channel is aligned with the secondary channel through self-deferral.

9. The electronic device according to claim 1 , wherein, when determining whether each of the plurality of unauthorized carriers is a primary channel or a secondary channel, the processing circuits are further configured to perform operations of:

acquiring uplink grant information from the base station, the uplink grant information comprising information on whether each of the plurality of unauthorized carriers is a primary channel or a secondary channel; and

determining whether each of the plurality of unauthorized carriers is a primary channel or a secondary channel based on the information on whether each of the plurality of unauthorized carriers is a primary channel or a secondary channel.

10. A method, implemented in circuitry of an electronic device, for performing wireless communication in a wireless communication system, the wireless communication system comprising a plurality of unauthorized carriers, and the method comprising:

acquiring, by the circuitry, information on channel detection parameters from a base station;

pre-estimating, by the circuitry, power consumption information of a first channel detection process and a second channel detection process, the second channel detection process being different from the first channel detection process;

acquiring power status information of the electronic device;

configuring, by the circuitry, each of the plurality of unauthorized carriers as a primary channel or a secondary channel to obtain at least two primary channels and at least one secondary channel based on the pre-estimated power consumption information and the power status information;

configuring channel detection parameters for the at least two primary channels and at least one secondary channel;

performing, by the circuitry, the first channel detection process on each of the primary channels to detect whether each of the primary channels is idle, and performing the second channel detection process on the secondary channel to detect whether the secondary channel is idle; and

performing, by the circuitry, uplink data transmission on the primary channel which is detected to be idle by the channel detection or the primary channel and the secondary channel which are detected to be idle by the channel detection.

11. The method of claim 10 , wherein the first channel detection process is energy detection comprising random backoff and a variable contention window size.

12. The method of claim 10 , wherein the second channel detection process is energy detection excluding random backoff.

13. The method of claim 10 , the method further comprising:

when the second channel detection process is performed on each of the secondary channels, triggering the secondary channel to perform the second channel detection process when detecting that a primary channel which is to finish the first channel detection process firstly is idle.

14. The method of claim 13 , the method further comprising:

triggering the secondary channel to perform the second channel detection process when detecting that the primary channel which is to finish the first channel detection process firstly is occupied, and a primary channel which is to finish the first channel detection process secondly is idle.

15. The method of claim 14 , the method further comprising:

when detecting that the primary channel which is to finish the first channel detection process secondly is occupied, searching for continuously a next primary channel which is to finish the first channel detection process and is idle, and triggering the secondary channel to perform the second channel detection process until there is no new primary channel which is to finish the first channel detection process and is idle.

16. The method of claim 15 , the method further comprising:

performing no uplink data transmission on the plurality of unauthorized carriers when detecting that a primary channel which is to finish the first channel detection process lastly is occupied.

17. The method of claim 10 , wherein ending time of the channel detection processes of the primary channel and the secondary channel is aligned, and the primary channel is aligned with the secondary channel through self-deferral.

18. The method of claim 10 , the method further comprising:

when determining whether each of the plurality of unauthorized carriers is a primary channel or a secondary channel:

acquiring uplink grant information from the base station, the uplink grant information comprising information on whether each of the plurality of unauthorized carriers is a primary channel or a secondary channel; and

determining whether each of the plurality of unauthorized carriers is a primary channel or a secondary channel based on the information on whether each of the plurality of unauthorized carriers is a primary channel or a secondary channel.