Spectrum management apparatus and method, apparatus and method for base station side and user device side

• US 9,894,529 B2
• Filed: 07/22/2016
• Issued: 02/13/2018
• Est. Priority Date: 09/15/2015
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sun, Chen, Hu, Bingshan
• Primary Examiner(s): Beamer, Temica M
• Application Number:
  US15/217,259
• Publication Number:
  US 20170078889A1
• Time in Patent Office: 571 Days
• Field of Search: 455447, 455436-438, 455 6711, 455 6713, 4552261-2263
• CPC Class Codes: H04B 17/3912 Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04W 16/10 Dynamic resource partitioning
• 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 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 52/24 using SIR [Signal to Interference Ratio] or other wireless path parameters
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]

Abstract

The present disclosure provides a spectrum management apparatus and method, as well as an apparatus and method for base station side and user device side of a wireless communication system. The spectrum management apparatus includes: an acquiring unit, configured to acquire spectrum utilization information of at least one wireless communication system on a predetermined frequency band; a determining unit, configured to determine, according to the spectrum utilization information, spectrum utilization efficiency of a corresponding wireless communication system; and an adjusting unit, configured to adjust, based on the spectrum utilization efficiency, spectrum sensing parameters of the corresponding wireless communication system on the predetermined frequency band.

Claims

1. A spectrum management apparatus, comprising:

processing circuitry configured to

acquire spectrum utilization information of at least one wireless communication system on a predetermined frequency band,

determine, according to the spectrum utilization information, spectrum utilization efficiency of a corresponding wireless communication system,

acquire information indicating an identifier of each cell in the wireless communication system,

determine whether a cell in an active state and a cell failing to be activated are systems of the same type based on the information indicating the identifier of each cell in the wireless communication system,

adjust, based on the spectrum utilization efficiency, spectrum sensing parameters of the corresponding wireless communication system on the predetermined frequency band,

wherein the processing circuitry is configured to perform the adjusting in the case of determining that the cell in the active state and the cell failing to be activated are systems of the same type.

2. The spectrum management apparatus according to claim 1, wherein, the spectrum utilization information includes at least one of the following:

information of actual activation status of each cell in the wireless communication system after spectrum sensing, throughput of the wireless communication system, and a signal to noise ratio of the wireless communication system,

wherein, the spectrum sensing parameters includes at least one of the following;

an energy detection threshold for spectrum sensing, time duration for spectrum sensing, the number of nodes involved in sensing and a judgment criterion of spectrum sensing in the case of distributed spectrum sensing.

3. The spectrum management apparatus according to claim 1, wherein, the processing circuitry is configured to adjust, in the case that the spectrum utilization efficiency deviates from an expected value, the spectrum sensing parameters of the corresponding wireless communication system, so that its spectrum utilization efficiency reaches the expected value.

4. The spectrum management apparatus according to claim 3, wherein, the processing circuitry is configured to perform the adjusting based on a preset system model, wherein, the preset system model includes at least one of the following:

a channel model, a service model, a model of probability for spectrum activation of the system, and a geographical location model.

5. The spectrum management apparatus according to claim 3, wherein, different expected values of spectrum utilization efficiency are set for wireless communication systems with different priority levels of utilizing the spectrum.

6. The spectrum management apparatus according to claim 3, wherein, the spectrum sensing parameters include an energy detection threshold, the processing circuitry is configured to, in the case of the spectrum utilization efficiency being higher than the expected value, decrease the energy detection threshold of the corresponding wireless communication system, and/or in the case of the spectrum utilization efficiency being lower than the expected value, increase the energy detection threshold of the corresponding wireless communication system.

7. The spectrum management apparatus according to claim 1, wherein, the number of the wireless communication systems managed by the spectrum management apparatus is two or more, and the processing circuitry is configured to adjust, with respect to a wireless communication system the spectrum utilization efficiency of which does not reach the expected value, the spectrum sensing parameters of the wireless communication system without influencing the spectrum utilization efficiency of the other wireless communication systems.

8. The spectrum management apparatus according to claim 7, the processing circuitry is configured to determine the spectrum utilization efficiency of the other wireless communication systems according to a system simulation model.

9. The spectrum management apparatus according to claim 1, wherein,

the number of the wireless communication systems managed by the spectrum management apparatus is one, and

the processing circuitry is configured to interact with other spectrum management apparatus so that the processing circuitry performs the adjusting while taking into consideration the influence to the other wireless communication systems,

wherein, the processing circuitry is configured to transmit a parameter changing request to the other wireless communication apparatus in the case that the processing circuitry has performed adjusting, and received a feedback from the other wireless communication apparatus, and the processing circuitry further adjusts the spectrum sensing parameters according to the feedback,

wherein, the feedback indicates whether the spectrum utilization efficiency of the wireless communication systems managed by the other spectrum management apparatus is influenced, and the processing circuitry is configured to, in the case that the feedback indicates that the spectrum utilization efficiency of the wireless communication systems managed by the other spectrum management apparatus is influenced, re-adjust the spectrum sensing parameters,

when the processing circuitry receives the parameter changing request from the other spectrum management apparatus, acquires the spectrum utilization information of the wireless communication system, determines the spectrum utilization efficiency of the wireless communication system and determines whether the spectrum utilization efficiency is influenced, and provides the feedback indicating whether the spectrum utilization efficiency is influenced to the other spectrum management apparatus.

10. The spectrum management apparatus according to claim 1, wherein, the predetermined frequency band is an unlicensed frequency band and the processing circuitry is configured to acquire the spectrum utilization information via wireless communication in a licensed frequency band.

11. The spectrum management apparatus according to claim 7 is a geographical location database.

12. An apparatus for base station side of a wireless communication system, comprising:

processing circuitry configured to

transmit spectrum utilization information of a cell, of a wireless communication system, served by the base station on a predetermined frequency band to a spectrum management apparatus, and

receive a change in spectrum sensing parameters of the wireless communication system from the spectrum management apparatus,

the change in spectrum sensing parameters being changed based on spectrum utilization efficiency of the wireless communication system determined according to the spectrum utilization information,

wherein the spectrum management apparatus acquires information indicating an identifier of each cell in the wireless communication system, determines whether a cell in an active state and a cell failing to be activated are systems of the same type based on the information indicating the identifier of each cell in the wireless communication system, and changes the spectrum sensing parameters in the case of determining that a cell in the active state and the cell failing to be activated are systems of the same type.

13. The apparatus according to claim 12, wherein, the spectrum utilization information includes at least one of the following:

information of actual activation status of the cell after spectrum sensing, throughput of the base station, and a signal to noise ratio of the base station.

14. The apparatus according to claim 12, wherein, the spectrum sensing parameters include at least one of the following:

an energy detection threshold for spectrum sensing, time duration for spectrum sensing, the number of nodes involved in sensing and a judgment criterion of spectrum sensing in the case of distributed spectrum sensing.

15. An apparatus for user device side of a wireless communication system, comprising:

processing circuitry configured to

receive an instruction for performing spectrum sensing and corresponding spectrum sensing parameters from a base station;

perform the spectrum sensing according to the spectrum sensing parameters in response to the instruction; and

transmit a result of the spectrum sensing to the base station,

the base station having circuitry configured to

transmit spectrum utilization information of a cell, of a wireless communication system, served by the base station on a predetermined frequency band to a spectrum management apparatus, the use of the predetermined frequency band by the cell being based on the spectrum sensing,

receive a change in spectrum sensing parameters of the wireless communication system from the spectrum management apparatus,

the change in spectrum sensing parameters being changed based on spectrum utilization efficiency of the wireless communication system determined according to the spectrum utilization information,

wherein the spectrum management apparatus acquires information indicating an identifier of each cell in the wireless communication system, determines whether a cell in an active state and a cell failing to be activated are systems of the same type based on the information indicating the identifier of each cell in the wireless communication system, and changes the spectrum sensing parameters in the case of determining that a cell in the active state and the cell failing to be activated are systems of the same type.

16. The apparatus according to claim 15, wherein, the spectrum sensing parameters include at least one of the following:

an energy detection threshold for spectrum sensing, time duration for spectrum sensing, the number of nodes involved in sensing and a judgment criterion of spectrum sensing in the case of distributed spectrum sensing.