ELECTRONIC DEVICE, METHOD AND COMPUTER-READABLE MEDIUM FOR SENSING SPECTRUM USAGE IN A COGNITIVE RADIO COMMUNICATION SYSTEM

• US 20170201398A1
• Filed: 03/27/2017
• Published: 07/13/2017
• Est. Priority Date: 10/14/2011
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.), Tsinghua University
• Original Assignee: Sony Corporation (Sony Group Corp.), Tsinghua University
• Inventors: RAO, Yu, Cao, Zhigang, Guo, Xin, Sawai, Ryo, Chen, Wei, Kimura, Ryota
• Granted Patent: US 9,998,308 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 27/0006 Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio for spectrum sharing between different networks H04W16/14
• CPC Class Codes: H04L 27/0012 arrangements for identifying the type of modulation
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 52/14 Separate analysis of uplink or downlink

Abstract

The disclosure provides an electronic device, a method and computer-readable medium. The electronic device includes a circuitry. The circuitry is configured to receive a radio communication signal for another device. The circuitry is also configured to determine, based on the radio communication signal, one or more features that can reflect the difference between uplink transmission mode and downlink transmission mode. The circuitry is further configured to judge whether the radio communication signal is for uplink transmission or downlink transmission according to the feature(s).

Claims

1. An electronic device, comprising:

circuitry configured to

detect an energy value on a channel in a spectrum unlicensed to the electronic device;

judge whether a predetermined relationship is satisfied between the detected energy value and a first threshold to determine an occupancy probability of the channel; and

generate a report indicating the occupancy probability of the channel for facilitating a serving base station of the electronic device to decide opportunistic utilization of the channel for communication.

2. The electronic device according to claim 1, wherein the circuitry is configured to:

detect energy values of one or more samples on the channel; and

generate the report for the serving base station based on the energy values of the one or more samples.

3. The electronic device according to claim 2, wherein the circuitry is configured to calculate an average value of the energy values of the one or more samples and include the average value in the report.

4. The electronic device according to claim 3, wherein each sample corresponds to a symbol on the channel.

5. The electronic device according to claim 1, wherein the circuitry is configured to determine the channel is occupied under certain probability in case of the detected energy value exceeding the first threshold.

6. The electronic device according to claim 1, wherein an occupancy status of the channel corresponds to one of downlink transmission occupied, uplink transmission occupied or idle, and the circuitry is configured to judge whether a predetermined relationship is satisfied between the detected energy value and a second threshold to distinguish the downlink transmission occupied status and uplink transmission occupied status.

7. The electronic device according to claim 6, wherein the second threshold value is set according to a maximum uplink transmission power and a downlink transmission power.

8. The electronic device according to claim 1, wherein the electronic device is implemented as a user equipment.

9. An electronic device, comprising:

circuitry configured to

detect an energy value on a channel in a spectrum unlicensed to the electronic device;

judge whether a predetermined relationship is satisfied between the detected energy value and a first threshold to determine an occupancy probability of the channel;

acquire one or more reports indicating the occupancy probability of the channel determined by one or more other electronic devices; and

decide opportunistic utilization of the channel for communication based on the occupancy probabilities.

10. The electronic device according to claim 9, wherein the report is generated by the other electronic device based on detection of energy values of one or more samples on the channel.

11. The electronic device according to claim 10, wherein each report includes an average value of the energy values of the one or more samples.

12. The electronic device according to claim 9, wherein the circuitry is configured to determine the channel is occupied under certain probability in case of the detected energy value exceeding the first threshold.

13. The electronic device according to claim 9, wherein an occupancy status of the channel corresponds to one of downlink transmission occupied, uplink transmission occupied or idle, and the circuitry is configured to judge whether a predetermined relationship is satisfied between the detected energy value and a second threshold to distinguish the downlink transmission occupied status and uplink transmission occupied status.

14. The electronic device according to claim 13, wherein the second threshold value is set according to a maximum uplink transmission power and a downlink transmission power.

15. The electronic device according to claim 9, wherein the circuitry is configured to merge the occupancy probabilities to reduce judgment error of occupancy status of the channel.

16. The electronic device according to claim 9, wherein the electronic device is implemented as a base station and the other electronic device is implemented as user equipment served by the base station.

17. A method in a radio communication system, comprising:

detecting an energy value on a channel in a spectrum unlicensed to the electronic device;

judging whether a predetermined relationship is satisfied between the detected energy value and a first threshold to determine an occupancy probability of the channel; and

generating a report indicating the occupancy probability of the channel for facilitating a serving base station of the electronic device to decide opportunistic utilization of the channel for communication.

18. The method according to claim 17, wherein the method further comprises detecting energy values of one or more samples on the channel and generating the report for the serving base station based on the energy values of the one or more samples.

19. The method according to claim 18, wherein the method further comprises calculating an average value of the energy values of the one or more samples and include the average value in the report.

20. The method according to claim 19, wherein each sample corresponds to a symbol on the channel.