Electronic device and spectrum management method, electronic device on base station side and method

Abstract

The present disclosure provides an electronic device and a spectrum management method, an electronic device and a method on a base station side, and a wireless communication system. The electronic device includes: a circuit configured to: obtain spectrum utilization information in a predetermined area on a predetermined frequency band; determine the probability of obtaining spectrum resources in the predetermined area according to the spectrum utilization information; and adjust the spectrum sensing parameters in the predetermined area on the predetermined frequency band according to the probability; wherein the spectrum sensing parameters include an energy detection threshold for spectrum sensing.

Description

[0001] This invention application is a divisional application of invention patent application No. 201610031275.0, whose application date is January 18, 2016 and whose invention name is "Spectrum management device and method, device and method on the base station side and user equipment side". Technical Field

[0002] Embodiments of the present invention generally relate to the field of wireless communications, and specifically relate to multi-system coexistence management in wireless communications, and more specifically relate to a spectrum management device and method, a device and method on a base station side for wireless communications, and a device and method on a user equipment side for wireless communications. Background Art

[0003] With the development and evolution of wireless networks, more and more services are carried, so additional spectrum resources are needed to support a large amount of data transmission. Spectrum resources can be represented by parameters such as time, frequency, bandwidth, and maximum allowable transmission power. Limited spectrum resources have been allocated to fixed operators and services, and new available spectrum is very scarce or expensive. In this case, the concept of dynamic spectrum utilization is proposed, that is, dynamically utilizing spectrum resources that have been allocated to certain systems or services but have not been fully utilized. These spectrum resources belong to unlicensed frequency bands for systems that dynamically utilize them. When a wireless communication system uses an unlicensed frequency band, it must first determine whether the frequency band is available. Since communication systems of different operators and communication systems under different communication protocols have equal rights to use unlicensed frequency bands, how to use the same unlicensed frequency band fairly and effectively has become an urgent problem to be solved in the industry. Summary of the invention

[0004] A brief overview of the present invention is provided below in order to provide a basic understanding of certain aspects of the present invention. It should be understood that this overview is not an exhaustive overview of the present invention. It is not intended to identify key or important parts of the present invention, nor is it intended to limit the scope of the present invention. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0005] According to one aspect of the present application, a spectrum management device is provided, including: an acquisition unit, configured to acquire spectrum utilization information of at least one wireless communication system in a predetermined area on a predetermined frequency band; a determination unit, configured to determine the spectrum utilization efficiency of the corresponding wireless communication system in the predetermined area based on the spectrum utilization information; and an adjustment unit, configured to adjust the spectrum perception parameters of the corresponding wireless communication system in the predetermined area on the predetermined frequency band based on the spectrum utilization efficiency.

[0006] According to another aspect of the present application, a device for a base station side of a wireless communication system is provided, comprising: a sending unit configured to send spectrum utilization information of a cell served by the base station on a predetermined frequency band to a spectrum management device; and a receiving unit configured to receive changes in spectrum sensing parameters from the spectrum management device.

[0007] According to one aspect of the present application, there is provided an apparatus for a user equipment side of a wireless communication system, comprising: a receiving unit configured to receive an instruction for performing spectrum sensing and corresponding spectrum sensing parameters from a base station; a sensing unit configured to perform spectrum sensing according to the spectrum sensing parameters in response to the instruction; and a sending unit configured to send a result of the spectrum sensing to the base station.

[0008] According to another aspect of the present application, a spectrum management method is provided, including: obtaining spectrum utilization information of at least one wireless communication system in a predetermined area on a predetermined frequency band; determining the spectrum utilization efficiency of the corresponding wireless communication system in the predetermined area based on the spectrum utilization information; and adjusting the spectrum sensing parameters of the corresponding wireless communication system in the predetermined area on the predetermined frequency band based on the spectrum utilization efficiency.

[0009] According to another aspect of the present application, a method for a base station side of a wireless communication system is provided, comprising: sending spectrum utilization information of a cell served by the base station on a predetermined frequency band to a spectrum management device; and receiving changes in spectrum sensing parameters from the spectrum management device.

[0010] According to another aspect of the present application, a method for a user equipment side of a wireless communication system is provided, including: receiving an instruction for performing spectrum sensing and corresponding spectrum sensing parameters from a base station; performing spectrum sensing according to the spectrum sensing parameters in response to the instruction; and sending the result of the spectrum sensing to the base station.

[0011] According to another aspect of the present application, a wireless communication system is also provided, including a base station and a user equipment, wherein the base station includes a device on the base station side in the above-mentioned wireless communication system, and the user equipment includes a device on the user equipment side in the above-mentioned wireless communication system.

[0012] According to one aspect of the present application, an electronic device is provided, comprising: a circuit configured to: obtain spectrum utilization information within a predetermined area on a predetermined frequency band; determine the probability of acquiring spectrum resources within the predetermined area based on the spectrum utilization information; and adjust spectrum sensing parameters within the predetermined area on the predetermined frequency band based on the probability; wherein the spectrum sensing parameters include an energy detection threshold for spectrum sensing.

[0013] According to another aspect of the present application, an electronic device for a base station side is provided, comprising: a circuit configured to: send spectrum utilization information of a cell served by the base station on a predetermined frequency band; and receive changes in spectrum sensing parameters; wherein the spectrum sensing parameters include an energy detection threshold for spectrum sensing.

[0014] According to another aspect of the present application, a spectrum management method is provided, including: obtaining spectrum utilization information in a predetermined area on a predetermined frequency band; determining the probability of acquiring spectrum resources in the predetermined area based on the spectrum utilization information; and adjusting spectrum sensing parameters in the predetermined area on the predetermined frequency band based on the probability; wherein the spectrum sensing parameters include an energy detection threshold for spectrum sensing.

[0015] According to another aspect of the present application, a method for a base station side is provided, comprising: sending spectrum utilization information of a cell served by the base station on a predetermined frequency band; and receiving changes in spectrum sensing parameters; wherein the spectrum sensing parameters include an energy detection threshold for spectrum sensing.

[0016] According to another aspect of the present application, a wireless communication system is provided, comprising: a first electronic device, comprising a circuit, configured to: obtain spectrum utilization information in a predetermined area on a predetermined frequency band; determine the probability of acquiring spectrum resources in the predetermined area based on the spectrum utilization information; and adjust the spectrum sensing parameters in the predetermined area on the predetermined frequency band based on the probability; and a second electronic device, comprising a circuit, configured to: send spectrum utilization information of a cell served by the second electronic device on the predetermined frequency band; and receive changes in spectrum sensing parameters; wherein the spectrum sensing parameters include an energy detection threshold for spectrum sensing.

[0017] According to other aspects of the present invention, there are also provided computer program codes and computer program products for implementing the above-mentioned spectrum management method and the method for the base station side and the user equipment side of the wireless communication system, as well as a computer-readable storage medium having recorded thereon the computer program codes for implementing the above-mentioned spectrum management method and the method for the base station side and the user equipment side of the wireless communication system.

[0018] In an embodiment of the present application, by adjusting the spectrum sensing parameters of the wireless communication system according to the spectrum utilization efficiency, the wireless communication system can effectively ensure the use of spectrum resources in a predetermined frequency band and / or enable different communication systems to reasonably and effectively utilize spectrum resources.

[0019] The above and other advantages of the present invention will become more apparent through the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to further illustrate the above and other advantages and features of the present invention, the specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. The accompanying drawings together with the following detailed description are included in this specification and form a part of this specification. Elements with the same function and structure are represented by the same reference numerals. It should be understood that these drawings only describe typical examples of the present invention and should not be regarded as limiting the scope of the present invention. In the accompanying drawings:

[0021] Figure 1 A schematic structural block diagram of a spectrum management device according to an embodiment of the present application is shown;

[0022] Figure 2 An example of system distribution in a LTE communication system scenario is shown;

[0023] Figure 3 Shown in Figure 2 Simulation results of the activation probability of a communication system when the spectrum sensing parameters of a communication system are adjusted in a scenario;

[0024] Figure 4 A schematic structural block diagram of a spectrum management device according to another embodiment of the present application is shown;

[0025] Figure 5 A schematic structural block diagram of a device at a base station side of a wireless communication system according to an embodiment of the present application is shown;

[0026] Figure 6 A schematic structural block diagram of an apparatus at a user equipment side of a wireless communication system according to an embodiment of the present application is shown;

[0027] Figure 7 A flowchart of a spectrum management method according to an embodiment of the present application is shown;

[0028] Figure 8 A flow chart of a method for a base station side of a wireless communication system according to an embodiment of the present application is shown;

[0029] Fig. 9 A flow chart of a method for a user equipment side of a wireless communication system according to an embodiment of the present application is shown;

[0030] Fig.10 An example of information flow between a spectrum management device and a wireless communication system is shown;

[0031] Fig.11 Another example of the information flow between the spectrum management device and the wireless communication system is shown;

[0032] Fig.12is a block diagram showing a first example of a schematic configuration of an eNB to which the technology of the present disclosure can be applied;

[0033] Fig.13 is a block diagram showing a second example of a schematic configuration of an eNB to which the technology of the present disclosure can be applied;

[0034] Fig.14 is a block diagram showing an example of a schematic configuration of a smartphone to which the technology of the present disclosure can be applied;

[0035] Fig.15 is a block diagram showing an example of a schematic configuration of a car navigation device to which the technology of the present disclosure can be applied; and

[0036] Fig.16 is a block diagram of an exemplary structure of a general personal computer in which the method and / or apparatus and / or system according to the embodiments of the present invention can be implemented. DETAILED DESCRIPTION

[0037] Exemplary embodiments of the present invention will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the present disclosure.

[0038] It is also necessary to explain here that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0039] <First Embodiment>

[0040] Figure 1 FIG. 1 shows a schematic structural block diagram of a spectrum management device 100 according to an embodiment of the present application. Figure 1 As shown, the spectrum management device 100 includes: an acquisition unit 101, configured to acquire spectrum utilization information of at least one wireless communication system in a predetermined area on a predetermined frequency band; a determination unit 102, configured to determine the spectrum utilization efficiency of the corresponding wireless communication system in the predetermined area according to the spectrum utilization information; and an adjustment unit 103, configured to adjust the spectrum sensing parameters of the corresponding wireless communication system in the predetermined area on the predetermined frequency band according to the spectrum utilization efficiency.

[0041] Among them, the reserved frequency band is the frequency band that the above-mentioned wireless communication system (hereinafter also referred to as the communication system or system) will or is jointly and dynamically using. In one example, the reserved frequency band is an unlicensed frequency band, such as the industrial, scientific research and medical frequency band of 2.4G and 5G, or a frequency band that can be used in an unauthorized manner according to the laws and regulations of various countries, such as a television band, 3.5GHz in the United States, etc. It should be understood that the reserved frequency band can be any frequency band that can be used by multiple wireless communication systems. When each wireless communication system or its subsystem is to use the reserved frequency band, it should first determine whether the frequency band is available through spectrum sensing, such as whether it is occupied by other systems or subsystems, to ensure the effectiveness and fairness of the use of the frequency band.

[0042] The predetermined area may be all or part of the area managed by the spectrum management device 100. For the predetermined area, the spectrum management device 100, for example, optimizes the spectrum utilization efficiency of the predetermined frequency band. In other words, the predetermined area may be an area determined based on the optimization of an application or service. As a non-limiting example, the predetermined area may be an area of ​​an administrative division, a building or a shopping mall, or a geographical range temporarily selected for a certain purpose. For example, the predetermined area may be a rectangular area, a circular area, an elliptical area, or an area of ​​any other shape. The predetermined area may be predetermined by the spectrum management device 100, or may be set by a higher-level device or application. As an example, when the predetermined area is a rectangular area, it may be determined by the vertices of the rectangle, and when the predetermined area is an area of ​​a building, it may be determined by the boundaries of the building, and so on.

[0043] In addition, in the embodiments of the present application, the wireless communication system can be understood as a combination of multiple devices with sending and receiving functions. For example, the wireless communication system can be a collection of all base stations and user equipment of the same mobile operator, or a collection of all base stations and user equipment of the same mobile operator using the same communication standard. The wireless communication system can also be a subset of the above set, for example, it can be limited to base stations and user equipment in the management area of ​​the spectrum management device. In addition, the wireless communication system can also be a collection of base stations and user equipment of different mobile operators using the same communication standard or a subset similar to the above. On the other hand, the wireless communication system can also be a collection of base stations and user equipment belonging to the same service provider or a subset similar to the above. As an example, in the case of an LTE communication system, the wireless communication system can be a subset of the LTE communication system, such as a collection of cell-level subsystems, wherein the cell-level subsystem includes, for example, a base station (macro base station or small base station) and one or more user equipment. Of course, the wireless communication system is not limited to the LTE communication system or its subset, but can also be other types of communication systems or subsets thereof, such as WiFi communication systems or their subsets. In addition, in some examples, such as in a device-to-device communication scenario, the wireless communication system can be understood as a device cluster formed by multiple user equipment.

[0044] Accordingly, the predetermined area may include multiple wireless communication systems, which may be of the same type, such as LTE communication systems, or of different types, such as LTE communication systems and WiFi communication systems, wherein the LTE communication system may be operated by different operators and may adopt different communication standards, and the WiFi communication system may include multiple access points (the area covered by each access point is equivalent to a small cell in LTE). As a specific example, the predetermined area may be the range of a macro cell covered by one or more LTE communication systems, and a number of WiFi access points are distributed in the range.

[0045] For ease of description, a subset of the LTE communication system is used as an application example in the embodiments below, but it should be understood that this is not restrictive.

[0046] As mentioned above, one or more wireless communication systems may be arranged in a predetermined area, and the spectrum management device 100 manages the behaviors of using the predetermined frequency band. For ease of understanding, Figure 2An example of system distribution in an LTE communication system scenario is shown. The triangle represents a macro base station, the five-pointed star in the left ellipse represents a small cell base station belonging to the first operator, and the circle in the right ellipse represents a small cell base station belonging to the second operator. The devices in the left ellipse can be regarded as one wireless communication system, and the devices in the right ellipse can be regarded as another wireless communication system. Note that Figure 2 Although the small cell base stations of the two operators are included in different ellipses, these small cell base stations are distributed in the same geographical area, that is, the above-mentioned predetermined area. In other words, in this example, the predetermined area is part of the coverage of the macro cell and is covered by two wireless communication systems at the same time. Of course, the two communication systems can be managed by the same spectrum management device or by different spectrum management devices, which will be described in detail later.

[0047] As described above, in the spectrum management device 100, the acquisition unit 101 acquires the utilization of the predetermined frequency band by each wireless communication system in the predetermined area, so that the determination unit 102 determines the respective spectrum utilization efficiency, and then the adjustment unit 103 adjusts the spectrum sensing parameters of the corresponding communication system according to the spectrum utilization efficiency. The spectrum sensing parameters are the configuration information adopted by the wireless communication system in the predetermined area when performing spectrum sensing on the predetermined frequency band. By changing the spectrum sensing parameters, the wireless communication system (or each subsystem therein, such as an LTE cell) can make different judgments on whether the current spectrum is available, thereby changing the probability of the wireless communication system acquiring spectrum resources and the protection probability of the existing communication system, that is, changing the spectrum utilization efficiency of the wireless communication system. It can be understood that when the predetermined area is different, the spectrum utilization information acquired by the acquisition unit 101 is different, so that the determined spectrum utilization efficiency is different. Accordingly, the adjustment unit 103 may adjust the spectrum sensing parameters differently.

[0048] As an example, the spectrum sensing parameters include one or more of the following: an energy detection threshold for spectrum sensing, a spectrum sensing time length, the number of nodes participating in sensing in case of distributed spectrum sensing, and a spectrum sensing decision criterion.

[0049] In the embodiments of the present application, any appropriate spectrum sensing technology can be used to perform spectrum sensing, and accordingly, the spectrum sensing parameters can be any parameters that affect the spectrum sensing results. For example, for a system that performs spectrum sensing through energy detection, if the energy detection threshold is set to -70dBm, then when the system performs energy detection and finds that the signal energy in the spectrum is less than -70dBm, it is considered that there is no system using the frequency band, and the spectrum resources are determined to be available. At this time, there may be other communication systems, but due to the long transmission distance, the energy of the signal has been attenuated to below -70dBm, such as -80dBm, after reaching the system performing spectrum sensing, it will not be detected. If the energy detection threshold is reduced to -85dBm, the system performing spectrum sensing will detect the existing system, thereby determining that the frequency band is unavailable. At the same time, it can also be understood that setting different energy detection thresholds will also have different protections for existing systems. A higher energy detection threshold increases the chance of spectrum use but also increases the probability of interference with existing systems. Conversely, lowering the energy detection threshold reduces the chance of spectrum use but increases protection for existing systems.

[0050] In addition, the length of spectrum sensing time, that is, the size of the time window for spectrum sensing, can also be adjusted. It can be understood that the longer the time length, the greater the probability of detecting the existing communication system, thereby reducing the chance of spectrum use and enhancing the protection of the existing system. On the contrary, the chance of spectrum use will be increased and the protection of the existing system will be reduced.

[0051] As another way, distributed spectrum sensing (i.e., collaborative sensing) can also be used. In this case, multiple independent communication devices, such as multiple base stations, sense the spectrum at different locations, such as the above-mentioned energy detection, and then aggregate the results to a central judgment device to determine whether the spectrum is available. The central judgment device can be located on a base station or on a spectrum management device, for example. In another example, the communication device that performs spectrum sensing can also include user equipment. User equipment and base stations can be collectively referred to as nodes.

[0052] Since the final judgment is made in the central judgment device based on the spectrum sensing results of multiple nodes, factors such as the number of nodes participating in the sensing and the spectrum sensing judgment criteria will affect the probability of successful spectrum acquisition. The spectrum sensing judgment criteria may include, for example, the AND principle, the OR principle, the proportional principle, etc. Among them, the AND principle is that all nodes confirm that the predetermined frequency band is available before finally determining that the frequency band is available, the OR principle is that if there is a node that determines that the predetermined frequency band is available, then the frequency band is finally determined to be available, and the proportional principle is that if a predetermined proportion of nodes among the nodes performing spectrum sensing determine that the predetermined frequency band is available, then the frequency band is finally determined to be available. It can be understood that when the number of nodes is the same, the communication system has a greater chance of obtaining spectrum resources under the OR principle, while the AND principle will make the communication system very conservative in acquiring spectrum resources, thereby achieving better protection for the existing system.

[0053] The adjustment unit 103 may adjust one of the above-mentioned spectrum sensing parameters, or may adjust two or more of them at the same time. In addition, the spectrum sensing parameters are not limited to the above-mentioned examples, and may also include other parameters according to different spectrum sensing technologies.

[0054] For example, the adjustment unit 103 can adjust the spectrum sensing parameters of the corresponding wireless communication system when the spectrum utilization efficiency deviates from the expected value so that the spectrum utilization efficiency reaches the expected value. The expected value is a target value of the spectrum utilization efficiency of the corresponding communication system, which can be pre-set by the spectrum management device 100, or can be automatically or manually adjusted during the working process.

[0055] The actual spectrum utilization efficiency of the communication system is determined by the determination unit 102 according to the spectrum utilization information acquired by the acquisition unit 101. As an example, the spectrum utilization information includes at least one of the following: actual activation state information of each cell in the wireless communication system in the predetermined area after spectrum sensing, the throughput of the wireless communication system in the predetermined area, and the signal-to-noise ratio of the wireless communication system in the predetermined area. For example, when the spectrum utilization information is the actual activation state information of each cell, the spectrum utilization efficiency can be expressed as the number or proportion of activated cells.

[0056] For example, when the spectrum sensing parameter is an energy detection threshold, the adjustment unit 103 is configured to reduce the energy detection threshold of the corresponding wireless communication system when the spectrum utilization efficiency is higher than the expected value, and / or increase the energy detection threshold of the corresponding wireless communication system when the spectrum utilization efficiency is lower than the expected value. This is because when the energy detection threshold is reduced, the probability of the wireless communication system acquiring spectrum resources is reduced, and the spectrum resource utilization rate is reduced accordingly.

[0057] It should be noted that although the above description describes adjusting spectrum sensing parameters for a wireless communication system, that is, adjusting the wireless communication system as a whole, it is also possible to adjust only its subsystems or make different adjustments for different subsystems. For example, different spectrum sensing parameters can be set for different LTE cells or different parameter adjustments can be made.

[0058] The adjustment unit 103 may perform the above adjustment based on a preset system model. In the preset system model, the relationship between the spectrum sensing parameter and the spectrum utilization efficiency is reflected. For example, the preset system model may include at least one of the following: a channel model, a service model, a system spectrum activation probability model in a predetermined area, and a geographic location model.

[0059] Taking the system spectrum activation probability model as an example, according to the actual business model, it can be calculated that the number of activated cells follows the Poisson distribution, or it is assumed that each cell sets an activation probability according to its business needs. The activated cell performs spectrum sensing and determines whether the reserved frequency band is available. Finally, the spectrum utilization efficiency of the system can be statistically calculated. By changing the spectrum sensing parameters such as the energy detection threshold, the desired spectrum utilization efficiency can be obtained.

[0060] In one example, different expected values ​​of spectrum utilization efficiency may be set for wireless communication systems with different spectrum utilization priorities. For example, a higher expected value may be set for a system with a higher priority. Of course, the expected value of spectrum utilization efficiency of the corresponding communication system may also be set according to the service type, payment situation, etc.

[0061] In addition, the acquisition unit 101 can also be configured to acquire information indicating the identification of each cell of the wireless communication system in a predetermined area, and the determination unit 102 is configured to determine whether the cell in the activated state and the cell that failed to be activated belong to the same system based on the information indicating the identification of each cell of the wireless communication system, wherein the adjustment unit 103 can be configured to make an adjustment when the determination unit 102 determines that the cell in the activated state and the cell that failed to be activated belong to the same system.

[0062] Here, the same type of system refers to one of the following situations: a system using the same spectrum access strategy, such as the same LTE cell or the same WiFi cell; or belonging to the same mobile operator or service provider. In addition, the cell identification information may refer to the cell ID or the cell reference signal. The spectrum management device 100 knows in advance the ID allocation and reference signal allocation information of cells of different wireless communication systems, so the determination unit 102 can determine whether the two cells are of the same type of system based on the acquired identification information. The adjustment unit 103 can make adjustments only in the case of the same type of system.

[0063] For an LTE communication system, the spectrum management device 100 may be located at a base station side, such as implemented by a macro base station or a small base station, or may be located in a core network, such as implemented by an Evolved Packet Core (EPC) under the LTE protocol. In addition, in an existing system that complies with the IEEE 802.19.1 standard, the spectrum management device 100 may be implemented in a coexistence manager (CM).

[0064] In an example, the acquisition unit 101 may acquire the above spectrum utilization information (and cell identification information, etc.) in a wired manner, for example, the information may be transmitted through a backhaul connection from a base station to a spectrum management device 100 located in a core network.

[0065] In another example, the predetermined frequency band is an unlicensed frequency band, and the acquisition unit 101 acquires spectrum utilization information through wireless communication in the licensed frequency band. For example, when the spectrum management device 100 is located in a base station, information can be transmitted in this manner.

[0066] In this embodiment, the number of wireless communication systems managed by the spectrum management device 100 may be two or more. In this case, as an example, the adjustment unit 103 may be configured to adjust the spectrum perception parameters of the wireless communication system for the wireless communication system whose spectrum utilization efficiency does not reach the expected value without affecting the spectrum utilization efficiency of other wireless communication systems. For example, the spectrum utilization efficiency of other communication systems may be determined by the determination unit 102 according to the system simulation model. The system simulation model described here may be, for example, the aforementioned channel model, service model, system spectrum probability activation model, geographic location model, etc. For example, if the determination unit 102 determines that the spectrum utilization efficiency of other communication systems is affected, the above adjustment is not performed.

[0067] In this example, different wireless communication systems may belong to different mobile operators or service providers.

[0068] by Figure 2 Take the scenario shown as an example. Figure 3 The simulation results of the activation probabilities of the communication system on the right (the second communication system, belonging to the second operator) and the first communication system are shown when the adjustment unit 103 adjusts the spectrum sensing parameters of the communication system on the left (called the first communication system, belonging to the first operator). In the simulation, the aforementioned system spectrum activation probability model is used. Each communication system includes 10 cells in total. It is assumed that the activation probability of each cell is 50%. Figure 3The histogram in shows the statistical distribution of the number of activated cells after 10,000 simulations with the energy detection threshold of the first communication system changed. The horizontal axis represents the number of activated cells, and the vertical axis represents the number of events of activating a corresponding number of cells in the 10,000 experiments. Figure 3 (a), (c) and (e) on the left side represent the simulation results of the first communication system, and (b), (d) and (f) on the right side represent the simulation results of the second communication system. Figure 3 (c) is obtained when the energy detection threshold is reduced. It can be seen that the probability of most cells being activated is reduced, that is, the probability of cells obtaining spectrum resources is reduced, and the spectrum utilization efficiency of the system is low. Figure 3 (e) is obtained when the energy detection threshold is further reduced, and the spectrum utilization efficiency of the system is further reduced. When the energy detection threshold of the first communication system is changed, the energy detection threshold of the second communication system remains unchanged, and Figure 3 It can be seen from (b), (d) and (f) that the probability of the cell of the second communication system obtaining spectrum resources remains basically unchanged. This is because the main interference comes from the coexistence interference between its own cells, so the energy detection threshold adjustment of the first communication system has little effect on it.

[0069] It can be seen that in this example, the spectrum management device 100 works as a centralized management device to manage multiple wireless communication systems, so that the multiple systems can reasonably use spectrum resources. For example, the spectrum management device can be a geographic location database.

[0070] In this embodiment, by adjusting the spectrum sensing parameters of the managed wireless communication system according to the spectrum utilization efficiency, the wireless communication system can effectively ensure the use of spectrum resources in a predetermined frequency band and / or enable different communication systems to reasonably and effectively utilize spectrum resources.

[0071] <Second Embodiment>

[0072] Figure 4 A structural block diagram of a spectrum management device 200 according to another embodiment of the present application is shown. Figure 1 In addition to the various units shown in , the spectrum management device 200 further includes: an interaction unit 201, which is configured to interact with other spectrum management devices so that the adjustment unit 103 makes adjustments while considering the impact on other wireless communication systems. In this embodiment, the number of wireless communication systems managed by the spectrum management device is one.

[0073] Still Figure 2As an example, at this time, respective spectrum management devices are set for the first communication system and the second communication system. Therefore, this embodiment realizes a distributed management.

[0074] In one example, the interaction unit 201 is configured to send parameter change requests to other spectrum management devices and receive feedback from other spectrum management devices when the adjustment unit 103 makes an adjustment, and the adjustment unit 103 further adjusts the spectrum sensing parameters according to the feedback. This operation of the interaction unit 201 can avoid affecting other wireless communication systems.

[0075] The feedback may indicate whether the spectrum utilization efficiency of the wireless communication system managed by other spectrum management devices is affected, and the adjustment unit 103 is configured to readjust the spectrum sensing parameter if the feedback indicates that the spectrum utilization efficiency of the wireless communication system managed by other spectrum management devices is affected, for example, to adjust to a value between the original value and the adjusted value, or to adjust back to the original value, etc. In other words, if the feedback indicates that the spectrum utilization efficiency of the wireless communication system managed by other spectrum management devices is not affected, the adjusted spectrum sensing parameter is maintained. The feedback is made by other spectrum management devices, for example, based on the spectrum utilization efficiency of the wireless communication system managed by them.

[0076] In addition, when the interaction unit 201 receives a parameter change request from another spectrum management device, the acquisition unit 101 acquires spectrum utilization information of the wireless communication system, the determination unit 102 determines the spectrum utilization efficiency of the wireless communication system and determines whether the spectrum utilization efficiency is affected, and the interaction unit 201 provides feedback indicating whether the spectrum utilization efficiency is affected to the other spectrum management device. Therefore, when the spectrum management device 200 receives a parameter change request, it measures the spectrum utilization efficiency of the wireless communication system it manages and gives feedback.

[0077] It can be seen that the spectrum management devices in this embodiment only need to exchange simple commands to achieve collaboration between different communication systems, so as to reasonably jointly utilize spectrum resources in a predetermined frequency band.

[0078] <Third Embodiment>

[0079] Figure 5 A structural block diagram of an apparatus 300 for a wireless communication system according to an embodiment of the present application is shown. The apparatus 300 may be located at a base station side, for example. The apparatus 300 includes: a sending unit 301, configured to send spectrum utilization information of a cell served by the base station in a predetermined frequency band to a spectrum management device; and a receiving unit 302, configured to receive changes in spectrum sensing parameters from the spectrum management device.

[0080] As mentioned above, the spectrum management device can be located at the base station side, for example, implemented by a macro base station or a small base station, or can be located in the core network, for example, implemented by an EPC under the LTE protocol. In addition, in an existing system that complies with the IEEE 802.19.1 standard, the spectrum management device can be implemented in a coexistence manager (CM). As an example, the spectrum management device can be the aforementioned spectrum management device 100 or 200, but is not limited thereto. In addition, the description of the predetermined frequency band and the wireless communication system is similar to that in the first embodiment and will not be repeated here.

[0081] When the cell served by the base station wants to use the predetermined frequency band, it first performs spectrum sensing, wherein the spectrum sensing can be performed by the base station alone, or assisted by its user equipment, or coordinated by other base stations and / or user equipment of other base stations. When the result of spectrum sensing indicates that the predetermined frequency band is available, the cell uses the predetermined frequency band. The base station reports the utilization information of the predetermined frequency band by the cell it serves to the spectrum management device, so that the spectrum management device can obtain the spectrum utilization efficiency of the corresponding wireless communication system.

[0082] In one example, the spectrum utilization information includes at least one of the following: actual activation status information of the cell after spectrum sensing, the throughput of the base station, and the signal-to-noise ratio of the base station. After each base station reports the spectrum utilization information, the spectrum management device can obtain the spectrum utilization efficiency of the entire communication system, thereby deciding whether to adjust the spectrum sensing parameters.

[0083] When the spectrum management device determines that the spectrum sensing parameters need to be changed, the base station is notified of the change to be made, so that the base station uses the changed spectrum sensing parameters to perform spectrum sensing.

[0084] For example, the spectrum sensing parameters include at least one of the following: an energy detection threshold for spectrum sensing, a spectrum sensing time length, the number of nodes participating in sensing in the case of distributed spectrum sensing, and a spectrum sensing judgment criterion. After the receiving unit 302 receives the change in the spectrum sensing parameters, the base station uses the changed spectrum sensing parameters when performing spectrum sensing. In the case where the user equipment assists the base station in performing spectrum sensing, the base station also notifies the user equipment of the change in the spectrum sensing parameters. The specific description of the spectrum sensing parameters is given in the first embodiment and will not be repeated here. As mentioned above, since the change in the spectrum sensing parameters will affect the probability of acquiring spectrum resources, the spectrum utilization efficiency of the system will be changed.

[0085] like Figure 5 As shown in the dotted box in , the apparatus 300 may further include: a judging unit 303, configured to judge whether a predetermined frequency band is available based on a spectrum sensing result of the base station.

[0086] In one example, the receiving unit 302 is further configured to receive spectrum sensing results of other nodes, and the judging unit 303 is further configured to make a judgment based on the spectrum sensing results of other nodes. The other nodes mentioned here include user equipment and / or other base stations. The judging unit 303 judges whether the predetermined frequency band is available based on the spectrum sensing results from multiple nodes (including the base station). It can be understood that in this example, the device 300 works as a central judgment device for distributed spectrum sensing.

[0087] The judgment unit 303 uses the spectrum sensing results from the number of nodes set in the spectrum sensing parameters to make a final judgment according to the spectrum sensing judgment criteria set in the spectrum sensing parameters. The description of the specific judgment criteria is given in the first embodiment and will not be repeated here. Among them, when performing spectrum sensing, these nodes use the energy detection threshold and spectrum sensing time length set in the spectrum sensing parameters.

[0088] In addition, when the judgment unit 303 judges that the predetermined frequency band is unavailable, the judgment unit 303 can also judge whether the cell and the cell that has occupied the predetermined frequency band belong to the same type of system, and the sending unit 301 provides the result of the judgment to the spectrum management device. As mentioned above, the same type of system refers to one of the following situations: a system that uses the same spectrum access strategy, such as the same LTE cell or the same WiFi cell; or a system that belongs to the same mobile operator or service provider, such as Figure 2 In the example shown in FIG. 1 , cells in the ellipse on the same side are of the same type of system.

[0089] In this case, the spectrum management device may, for example, adjust the spectrum sensing parameters when receiving a signal that is determined to be of the same type of system, and otherwise, do not adjust the signal.

[0090] The judgment unit 303 may judge whether the system belongs to the same type according to at least one of the following: identification information of the cell, reference signal detection. Reference signal detection is such as preamble detection of WiFi or synchronization signal detection of LTE. Such information may be obtained by extracting the signal obtained in the spectrum sensing process. Since cells of different wireless communication systems have different identification information and reference signal formats and / or contents, such information may be used to judge whether the system belongs to the same type.

[0091] In this embodiment, the apparatus 300 may report the spectrum utilization status to the spectrum management apparatus, and change the spectrum sensing parameters according to the instruction of the spectrum management apparatus, so as to realize the reasonable utilization of spectrum resources.

[0092] In addition, it should be understood that the device 300 can also be located on a WiFi access point, for example, wherein the sending unit 301 sends spectrum utilization information of the access point on a predetermined frequency band to the spectrum management device, and the receiving unit 302 receives changes in spectrum sensing parameters from the spectrum management device.

[0093] <Fourth Embodiment>

[0094] Figure 6 A structural block diagram of an apparatus 400 for a user equipment side of a wireless communication system according to an embodiment of the present application is shown, and the apparatus 400 includes: an apparatus for a user equipment side of a wireless communication system, comprising: a receiving unit 401, configured to receive an instruction for performing spectrum sensing and corresponding spectrum sensing parameters from a base station; a sensing unit 402, configured to perform spectrum sensing according to the spectrum sensing parameters in response to the instruction; and a sending unit 403, configured to send a result of the spectrum sensing to the base station.

[0095] As mentioned above, the spectrum sensing parameters include at least one of the following: an energy detection threshold for spectrum sensing, a spectrum sensing time length, the number of nodes participating in sensing in the case of distributed spectrum sensing, and a spectrum sensing decision criterion.

[0096] In this embodiment, the user equipment assists the base station in performing spectrum sensing. Specifically, when the base station needs to perform spectrum sensing, it notifies the user equipment, and after completing the sensing, the user equipment notifies the base station of the result, so that the base station determines whether the predetermined frequency band is available. When the base station receives the change of the spectrum sensing parameter notified by the spectrum management device, it will also notify the user equipment accordingly, so that it can perform spectrum sensing according to the changed spectrum sensing parameter. As mentioned above, since the change of the spectrum sensing parameter will affect the probability of acquiring spectrum resources, the spectrum utilization efficiency of the system will be changed.

[0097] In this embodiment, the user equipment may receive the setting of the spectrum sensing parameter and perform spectrum sensing according to the setting to reasonably utilize spectrum resources. Similarly, it should be understood that the user equipment may also be a WiFi user equipment.

[0098] <Fifth Embodiment>

[0099] In the process of describing the spectrum management device and the devices on the base station side and the user equipment side in the wireless communication system in the above embodiments, it is obvious that some processing or methods are also disclosed. In the following, an overview of these methods is given without repeating some details discussed above, but it should be noted that although these methods are disclosed in the process of describing the spectrum management device and the devices on the base station side and the user equipment side in the wireless communication system, these methods do not necessarily adopt the described components or are not necessarily performed by those components. For example, the embodiments of the spectrum management device and the devices on the base station side and the user equipment side in the wireless communication system can be partially or completely implemented using hardware and / or firmware, and the methods discussed below can be completely implemented by a computer executable program, although these methods can also adopt the hardware and / or firmware of the spectrum management device and the devices on the base station side and the user equipment side in the wireless communication system.

[0100] Figure 7 A flowchart of a spectrum management method according to an embodiment of the present application is shown, the method comprising: obtaining spectrum utilization information of at least one wireless communication system in a predetermined area on a predetermined frequency band (S11); determining the spectrum utilization efficiency of the corresponding wireless communication system in the predetermined area based on the spectrum utilization information (S12); and adjusting the spectrum perception parameters of the corresponding wireless communication system in the predetermined area on the predetermined frequency band based on the spectrum utilization efficiency (S14).

[0101] The spectrum utilization information may include at least one of the following: actual activation status information of each cell in the wireless communication system within the predetermined area after spectrum sensing, throughput of the wireless communication system within the predetermined area, and signal-to-noise ratio of the wireless communication system within the predetermined area.

[0102] The spectrum sensing parameters may include at least one of the following: an energy detection threshold for spectrum sensing, a spectrum sensing time length, the number of nodes participating in sensing in case of distributed spectrum sensing, and a spectrum sensing decision criterion.

[0103] In one example, in step S14, when the spectrum utilization efficiency deviates from the expected value, the spectrum sensing parameters of the corresponding wireless communication system are adjusted so that the spectrum utilization efficiency reaches the expected value. For example, in step S14, the adjustment can be performed based on a preset system model. The preset system model, for example, includes at least one of the following: a channel model, a service model, a system spectrum activation probability model in a predetermined area, and a geographical location model. In addition, different expected values ​​of spectrum utilization efficiency can be set for wireless communication systems with different spectrum utilization priorities.

[0104] For example, when the spectrum sensing parameter is an energy detection threshold, in step S14, the energy detection threshold of the corresponding wireless communication system is lowered when the spectrum utilization efficiency is higher than the expected value, and / or the energy detection threshold of the corresponding wireless communication system is increased when the spectrum utilization efficiency is lower than the expected value.

[0105] In step S11, the spectrum utilization information may be obtained in a wired manner. In one example, the predetermined frequency band is an unlicensed frequency band, and in step S11, the spectrum utilization information is obtained through wireless communication in the licensed frequency band.

[0106] In step S11, information indicating the identification of each cell of the wireless communication system in the predetermined area may also be obtained, such as Figure 7 As shown in the dotted box in , the above method may further include step S13 before step S14, wherein, whether the cell in the activated state and the cell that failed to be activated belong to the same system is determined according to information indicating the identification of each cell of the wireless communication system, for example, by detecting the signal in the spectrum sensing process, extracting the cell ID information therefrom and making a judgment, and if it is a WiFi signal, it can also be determined by detecting its preamble information, and the adjustment of step S14 is performed when it is determined that the cell in the activated state and the cell that failed to be activated belong to the same system.

[0107] In one example, the number of managed wireless communication systems is two or more. In step S14, for a wireless communication system whose spectrum utilization efficiency does not reach an expected value, the spectrum sensing parameters of the wireless communication system are adjusted without affecting the spectrum utilization efficiency of other wireless communication systems. The spectrum utilization efficiency of other wireless communication systems can be determined according to the system simulation model in step S12. The example of the system simulation model is as described above and will not be repeated here.

[0108] In this example, different wireless communication systems belong to different mobile operators or service providers. The above method may be implemented in a geographic location database, for example.

[0109] Furthermore, in another example, the number of the managed wireless communication system is one, and in step S14, the spectrum management apparatuses of other wireless communication systems are interacted with to make adjustments while taking into account the impact on other wireless communication systems.

[0110] For example, the method further includes the following steps: sending a parameter change request to a spectrum management device of another wireless communication system when adjustment is made in step S14 (S15), receiving feedback from the spectrum management device (S16), and further adjusting the spectrum sensing parameters according to the feedback (S17).

[0111] The feedback indicates whether the spectrum utilization efficiency of other wireless communication systems is affected, and in step S17, the spectrum sensing parameter can be readjusted when the feedback indicates that the spectrum utilization efficiency of other wireless communication systems is affected, for example, adjusted back to the original value or a value between the original value and the adjusted value, etc.

[0112] In addition, although not shown in the figure, the above method may also include the following steps: receiving a parameter change request from a spectrum management device of other wireless communication systems; obtaining spectrum utilization information of the wireless communication system; determining the spectrum utilization efficiency of the wireless communication system and determining whether the spectrum utilization efficiency is affected; and providing feedback indicating whether the spectrum utilization efficiency is affected to the above-mentioned spectrum management device.

[0113] Figure 8 A flowchart of a method for a base station side of a wireless communication system according to another embodiment of the present application is shown, the method comprising: sending spectrum utilization information of a cell served by the base station on a predetermined frequency band to a spectrum management device (S22); and receiving changes in spectrum sensing parameters from the spectrum management device (S23).

[0114] The spectrum utilization information may include at least one of the following: actual activation state information of the cell after spectrum sensing, throughput of the base station, and signal-to-noise ratio of the base station.

[0115] The spectrum sensing parameters may include at least one of the following: an energy detection threshold for spectrum sensing, a spectrum sensing time length, the number of nodes participating in sensing in case of distributed spectrum sensing, and a spectrum sensing decision criterion.

[0116] In addition, if Figure 8 As shown in the dotted box in , the above method may further include step S21: judging whether the predetermined frequency band is available based on the spectrum sensing result. The spectrum sensing result mentioned here may refer to the spectrum sensing result of the base station itself, and may also include the spectrum sensing result received from other nodes (including base stations and user equipment), that is, a distributed sensing method is adopted.

[0117] In addition, when it is determined in step S21 that the predetermined frequency band is unavailable, it is also determined whether the cell and the cell that has occupied the predetermined frequency band belong to the same type of system, and the determination result is provided to the spectrum management device in step S22. For example, the determination of whether the cell belongs to the same type of system can be performed based on at least one of the following: identification information of the cell, reference signal detection.

[0118] Fig. 9A method for a user equipment side of a wireless communication system according to another embodiment of the present application is shown, comprising: receiving an instruction for performing spectrum sensing and corresponding spectrum sensing parameters from a base station; performing spectrum sensing according to the spectrum sensing parameters in response to the instruction; and sending the result of the spectrum sensing to the base station.

[0119] The spectrum sensing parameters may include at least one of the following: an energy detection threshold for spectrum sensing, a spectrum sensing time length, the number of nodes participating in sensing in the case of distributed spectrum sensing, and a spectrum sensing decision criterion.

[0120] Note that the above methods may be used in combination or individually, and their details have been described in detail in the first to fourth embodiments and will not be repeated here.

[0121] In addition, in the above description, a communication system is also disclosed, including a base station and a user equipment, wherein the base station includes the device 300 and the user equipment includes the device 400 .

[0122] For ease of understanding, Fig.10 and Fig.11 An example of the information flow between the spectrum management device and the wireless communication system is shown, but it should be understood that this is not restrictive. Fig.10 In the present invention, a first wireless communication system and a second wireless communication system are located in a predetermined area managed by a spectrum management device. The two wireless communication systems report their spectrum utilization information, such as activation status information of each cell, to the spectrum management device. The spectrum management device determines the spectrum utilization efficiency of the two wireless communication systems based on the information. For example, assuming that the spectrum utilization efficiency of the first wireless communication system is lower than an expected value, while the spectrum utilization efficiency of the second wireless communication system is substantially equal to the expected value, then according to calculations of a system simulation model, updated spectrum sensing parameters of the first communication system are calculated without affecting the spectrum utilization efficiency of the second communication system, and a spectrum sensing parameter update command is sent to the first communication system.

[0123] exist Fig.11In the figure, an example is shown in which a spectrum management device manages a wireless communication system and the spectrum management devices interact with each other. The first spectrum management device determines the spectrum utilization efficiency based on the acquired spectrum utilization information, and when it is found that the spectrum utilization efficiency deviates from the expected value, adjusts the spectrum sensing parameters, that is, sends a spectrum sensing parameter change instruction to the first communication system, and sends a parameter change request to the second spectrum management device. After receiving the request, the second spectrum management device obtains the spectrum utilization information from the second communication system managed, and determines whether the spectrum utilization efficiency is affected by the change of the spectrum sensing parameters of the first communication system, and gives feedback to the first spectrum management device based on the judgment. When the feedback indicates that the second communication system is not affected, the first spectrum management device instructs the first communication system to work with the adjusted spectrum sensing parameters or no longer gives additional instructions to the first communication system. Otherwise, the first spectrum management device instructs the first communication system to work with the original spectrum sensing parameters.

[0124] Exemplarily, the spectrum management device may be used for coexistence management of wireless communication systems in a building, where the building is covered by services of multiple LTE communication systems and WiFi systems.

[0125] <Application Examples>

[0126] The technology of the present disclosure can be applied to various products. For example, the spectrum management devices 100 and 200 can be implemented as any type of server, such as a tower server, a rack server, and a blade server. The spectrum management devices 100 and 200 can be a control module installed on the server (such as an integrated circuit module including a single chip, and a card or blade inserted into a slot of a blade server).

[0127] In addition, the base station 300 mentioned above can be implemented as any type of evolved Node B (eNB), such as a macro eNB and a small eNB. A small eNB can be an eNB that covers a cell smaller than a macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB. Alternatively, the base station can be implemented as any other type of base station, such as a NodeB and a base transceiver station (BTS). The base station may include: a main body (also referred to as a base station device) configured to control wireless communication; and one or more remote radio heads (RRHs) arranged in a place different from the main body. In addition, the various types of user equipment described below can all work as a base station by temporarily or semi-permanently performing base station functions.

[0128] For example, the user equipment 400 may be implemented as a mobile terminal (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable / dongle-type mobile router, and a digital camera) or a vehicle-mounted terminal (such as a car navigation device). The user equipment 400 may also be implemented as a terminal that performs machine-to-machine (M2M) communication (also referred to as a machine type communication (MTC) terminal). In addition, the user equipment 400 may be a wireless communication module (such as an integrated circuit module including a single chip) installed on each of the above-mentioned terminals.

[0129] [Application examples for base stations]

[0130] (First application example)

[0131] Fig.12 800 is a block diagram showing a first example of a schematic configuration of an eNB to which the technology of the present disclosure can be applied. The eNB 800 includes one or more antennas 810 and a base station device 820. The base station device 820 and each antenna 810 may be connected to each other via an RF cable.

[0132] Each of the antennas 810 includes a single or multiple antenna elements (such as multiple antenna elements included in a multiple-input multiple-output (MIMO) antenna) and is used for the base station device 820 to transmit and receive wireless signals. Fig.12 As shown, the eNB 800 may include multiple antennas 810. For example, the multiple antennas 810 may be compatible with multiple frequency bands used by the eNB 800. Fig.12 An example is shown in which the eNB 800 includes a plurality of antennas 810 , but the eNB 800 may also include a single antenna 810 .

[0133] The base station device 820 includes a controller 821 , a memory 822 , a network interface 823 , and a wireless communication interface 825 .

[0134] The controller 821 may be, for example, a CPU or a DSP, and operates various functions of the higher layers of the base station device 820. For example, the controller 821 generates a data packet based on the data in the signal processed by the wireless communication interface 825, and transmits the generated packet via the network interface 823. The controller 821 may bundle data from a plurality of baseband processors to generate a bundled packet, and transmit the generated bundled packet. The controller 821 may have a logical function to perform the following control: the control may be such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. The control may be performed in conjunction with a nearby eNB or core network node. The memory 822 includes a RAM and a ROM, and stores programs executed by the controller 821 and various types of control data (such as a terminal list, transmission power data, and scheduling data).

[0135] The network interface 823 is a communication interface for connecting the base station device 820 to the core network 824. The controller 821 can communicate with the core network node or another eNB via the network interface 823. In this case, the eNB 800 and the core network node or other eNBs can be connected to each other through a logical interface (such as an S1 interface and an X2 interface). The network interface 823 can also be a wired communication interface or a wireless communication interface for a wireless backhaul line. If the network interface 823 is a wireless communication interface, the network interface 823 can use a higher frequency band for wireless communication compared to the frequency band used by the wireless communication interface 825.

[0136] The wireless communication interface 825 supports any cellular communication scheme (such as long term evolution (LTE) and LTE-Advanced), and provides a wireless connection to a terminal located in a cell of the eNB 800 via an antenna 810. The wireless communication interface 825 may generally include, for example, a baseband (BB) processor 826 and an RF circuit 827. The BB processor 826 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing of layers (e.g., L1, medium access control (MAC), radio link control (RLC), and packet data convergence protocol (PDCP)). Instead of the controller 821, the BB processor 826 may have a part or all of the above-mentioned logical functions. The BB processor 826 may be a memory storing a communication control program, or a module including a processor configured to execute a program and related circuits. Updating the program may change the function of the BB processor 826. The module may be a card or a blade inserted into a slot of the base station device 820. Alternatively, the module may also be a chip mounted on a card or a blade. Meanwhile, the RF circuit 827 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 810 .

[0137] like Fig.12As shown, the wireless communication interface 825 may include multiple BB processors 826. For example, the multiple BB processors 826 may be compatible with multiple frequency bands used by the eNB 800. Fig.12 As shown, the wireless communication interface 825 may include multiple RF circuits 827. For example, the multiple RF circuits 827 may be compatible with multiple antenna elements. Fig.12 An example is shown in which the wireless communication interface 825 includes a plurality of BB processors 826 and a plurality of RF circuits 827 , but the wireless communication interface 825 may also include a single BB processor 826 or a single RF circuit 827 .

[0138] exist Fig.12 In the eNB 800 shown, Figure 5 The sending unit 301 and the receiving unit 302 described above may be implemented by the wireless communication interface 825. At least part of the functions may also be implemented by the controller 821. For example, the controller 821 may perform the determination of whether the predetermined frequency band is available by executing the function of the determination unit 303.

[0139] (Second application example)

[0140] Fig.13 8 is a block diagram showing a second example of a schematic configuration of an eNB to which the technology of the present disclosure can be applied. The eNB 830 includes one or more antennas 840, a base station device 850, and an RRH 860. The RRH 860 and each antenna 840 can be connected to each other via an RF cable. The base station device 850 and the RRH 860 can be connected to each other via a high-speed line such as an optical fiber cable.

[0141] Each of the antennas 840 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the RRH 860 to transmit and receive wireless signals. Fig.13 As shown, the eNB 830 may include multiple antennas 840. For example, the multiple antennas 840 may be compatible with multiple frequency bands used by the eNB 830. Fig.13 An example is shown in which the eNB 830 includes a plurality of antennas 840 , but the eNB 830 may also include a single antenna 840 .

[0142] The base station device 850 includes a controller 851, a memory 852, a network interface 853, a wireless communication interface 855, and a connection interface 857. The controller 851, the memory 852, and the network interface 853 are similar to the reference Fig.12 The controller 821, memory 822 and network interface 823 described are the same.

[0143] The wireless communication interface 855 supports any cellular communication scheme (such as LTE and LTE-Advanced), and provides wireless communication to a terminal located in a sector corresponding to the RRH 860 via the RRH 860 and the antenna 840. The wireless communication interface 855 may generally include, for example, a BB processor 856. In addition to the BB processor 856 being connected to the RF circuit 864 of the RRH 860 via the connection interface 857, the BB processor 856 is connected to the reference RF circuit 864 of the RRH 860. Fig.12 The same as the BB processor 826 described above. Fig.13 As shown, the wireless communication interface 855 may include multiple BB processors 856. For example, the multiple BB processors 856 may be compatible with multiple frequency bands used by the eNB 830. Fig.13 An example is shown in which the wireless communication interface 855 includes a plurality of BB processors 856 , but the wireless communication interface 855 may also include a single BB processor 856 .

[0144] The connection interface 857 is an interface for connecting the base station device 850 (wireless communication interface 855) to the RRH 860. The connection interface 857 may also be a communication module for connecting the base station device 850 (wireless communication interface 855) to the RRH 860 for communication in the above-mentioned high-speed line.

[0145] The RRH 860 includes a connection interface 861 and a wireless communication interface 863 .

[0146] The connection interface 861 is an interface for connecting the RRH 860 (wireless communication interface 863) to the base station device 850. The connection interface 861 may also be a communication module for communication in the above-mentioned high-speed line.

[0147] The wireless communication interface 863 transmits and receives wireless signals via the antenna 840. The wireless communication interface 863 may generally include, for example, an RF circuit 864. The RF circuit 864 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives wireless signals via the antenna 840. Fig.13 As shown, the wireless communication interface 863 may include multiple RF circuits 864. For example, the multiple RF circuits 864 may support multiple antenna elements. Fig.13 An example is shown in which the wireless communication interface 863 includes a plurality of RF circuits 864 , but the wireless communication interface 863 may also include a single RF circuit 864 .

[0148] exist Fig.13 In the eNB 830 shown, Figure 5The sending unit 301 and the receiving unit 302 described above may be implemented by the wireless communication interface 855 and / or the wireless communication interface 863. At least part of the functions may also be implemented by the controller 851. For example, the controller 851 may perform the determination of whether the predetermined frequency band is available by executing the function of the determination unit 303.

[0149] [Application examples on user devices]

[0150] (First application example)

[0151] Fig.14 900 is a block diagram showing an example of a schematic configuration of a smartphone 900 to which the technology of the present disclosure can be applied. The smartphone 900 includes a processor 901, a memory 902, a storage device 903, an external connection interface 904, a camera device 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 912, one or more antenna switches 915, one or more antennas 916, a bus 917, a battery 918, and an auxiliary controller 919.

[0152] The processor 901 may be, for example, a CPU or a system on chip (SoC), and controls the functions of the application layer and other layers of the smartphone 900. The memory 902 includes a RAM and a ROM, and stores data and programs executed by the processor 901. The storage device 903 may include a storage medium such as a semiconductor memory and a hard disk. The external connection interface 904 is an interface for connecting an external device such as a memory card and a universal serial bus (USB) device to the smartphone 900.

[0153] The camera 906 includes an image sensor such as a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS), and generates a captured image. The sensor 907 may include a group of sensors such as a measurement sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor. The microphone 908 converts the sound input to the smart phone 900 into an audio signal. The input device 909 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 910, and receives an operation or information input from a user. The display device 910 includes a screen such as a liquid crystal display (LCD) and an organic light emitting diode (OLED) display, and displays an output image of the smart phone 900. The speaker 911 converts an audio signal output from the smart phone 900 into sound.

[0154] The wireless communication interface 912 supports any cellular communication scheme (such as LTE and LTE-Advanced), and performs wireless communication. The wireless communication interface 912 may generally include, for example, a BB processor 913 and an RF circuit 914. The BB processor 913 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 914 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via an antenna 916. The wireless communication interface 912 may be a chip module on which the BB processor 913 and the RF circuit 914 are integrated. Fig.14 As shown, the wireless communication interface 912 may include multiple BB processors 913 and multiple RF circuits 914. Fig.14 An example is shown in which the wireless communication interface 912 includes a plurality of BB processors 913 and a plurality of RF circuits 914 , but the wireless communication interface 912 may also include a single BB processor 913 or a single RF circuit 914 .

[0155] In addition, in addition to the cellular communication scheme, the wireless communication interface 912 can support other types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless local area network (LAN) schemes. In this case, the wireless communication interface 912 can include a BB processor 913 and an RF circuit 914 for each wireless communication scheme.

[0156] Each of the antenna switches 915 switches a connection destination of the antenna 916 between a plurality of circuits (eg, circuits for different wireless communication schemes) included in the wireless communication interface 912 .

[0157] Each of the antennas 916 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the wireless communication interface 912 to transmit and receive wireless signals. Fig.14 As shown, the smart phone 900 may include multiple antennas 916. Fig.14 An example is shown in which the smartphone 900 includes a plurality of antennas 916 , but the smartphone 900 may also include a single antenna 916 .

[0158] In addition, the smartphone 900 may include an antenna 916 for each wireless communication scheme. In this case, the antenna switch 915 may be omitted from the configuration of the smartphone 900.

[0159] The bus 917 connects the processor 901, the memory 902, the storage device 903, the external connection interface 904, the camera 906, the sensor 907, the microphone 908, the input device 909, the display device 910, the speaker 911, the wireless communication interface 912, and the auxiliary controller 919 to each other. Fig.14 The various blocks of the smartphone 900 shown are supplied with power, the feed lines being partially shown as dashed lines in the figure. The auxiliary controller 919 operates the minimum necessary functions of the smartphone 900, for example in a sleep mode.

[0160] exist Fig.14 In the illustrated smart phone 900, by using Figure 6 The receiving unit 401 and the sending unit 403 described may be implemented by the wireless communication interface 912. At least part of the functions may also be implemented by the processor 901 or the auxiliary controller 919. For example, the processor 901 or the auxiliary controller 919 may perform spectrum sensing by executing the functions of the sensing unit 402.

[0161] (Second application example)

[0162] Fig.15 9 is a block diagram showing an example of a schematic configuration of a car navigation device 920 to which the technology of the present disclosure can be applied. The car navigation device 920 includes a processor 921, a memory 922, a global positioning system (GPS) module 924, a sensor 925, a data interface 926, a content player 927, a storage medium interface 928, an input device 929, a display device 930, a speaker 931, a wireless communication interface 933, one or more antenna switches 936, one or more antennas 937, and a battery 938.

[0163] The processor 921 may be, for example, a CPU or an SoC, and controls a navigation function and another function of the car navigation device 920. The memory 922 includes a RAM and a ROM, and stores data and a program executed by the processor 921.

[0164] The GPS module 924 measures the position (such as latitude, longitude and altitude) of the car navigation device 920 using GPS signals received from GPS satellites. The sensor 925 may include a group of sensors such as a gyro sensor, a geomagnetic sensor and an air pressure sensor. The data interface 926 is connected to, for example, the vehicle network 941 via an unshown terminal and acquires data (such as vehicle speed data) generated by the vehicle.

[0165] The content player 927 reproduces content stored in a storage medium such as a CD and a DVD, which is inserted into the storage medium interface 928. The input device 929 includes, for example, a touch sensor, a button, or a switch configured to detect a touch on the screen of the display device 930, and receives an operation or information input from a user. The display device 930 includes a screen such as an LCD or an OLED display, and displays an image of a navigation function or reproduced content. The speaker 931 outputs a sound of a navigation function or reproduced content.

[0166] The wireless communication interface 933 supports any cellular communication scheme (such as LTE and LTE-Advanced), and performs wireless communication. The wireless communication interface 933 may generally include, for example, a BB processor 934 and an RF circuit 935. The BB processor 934 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 935 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via an antenna 937. The wireless communication interface 933 may also be a chip module on which the BB processor 934 and the RF circuit 935 are integrated. Fig.15 As shown, the wireless communication interface 933 may include multiple BB processors 934 and multiple RF circuits 935. Fig.15 An example is shown in which the wireless communication interface 933 includes a plurality of BB processors 934 and a plurality of RF circuits 935 , but the wireless communication interface 933 may also include a single BB processor 934 or a single RF circuit 935 .

[0167] In addition, in addition to the cellular communication scheme, the wireless communication interface 933 can support other types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless LAN schemes. In this case, for each wireless communication scheme, the wireless communication interface 933 can include a BB processor 934 and an RF circuit 935.

[0168] Each of the antenna switches 936 switches a connection destination of the antenna 937 between a plurality of circuits included in the wireless communication interface 933 , such as circuits for different wireless communication schemes.

[0169] Each of the antennas 937 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna), and is used for the wireless communication interface 933 to transmit and receive wireless signals. Fig.15 As shown, the car navigation device 920 may include multiple antennas 937. Fig.15 An example is shown in which the car navigation device 920 includes a plurality of antennas 937 , but the car navigation device 920 may also include a single antenna 937 .

[0170] Furthermore, the car navigation device 920 may include an antenna 937 for each wireless communication scheme. In this case, the antenna switch 936 may be omitted from the configuration of the car navigation device 920.

[0171] Battery 938 is fed via a feed line to Fig.15 The respective blocks of the illustrated car navigation device 920 are supplied with electric power, and feed lines are partially illustrated as dotted lines in the figure. The battery 938 accumulates electric power supplied from the vehicle.

[0172] exist Fig.15 In the car navigation device 920 shown, by using Figure 6 The receiving unit 401 and the sending unit 403 described may be implemented by the wireless communication interface 933. At least part of the functions may also be implemented by the processor 921. For example, the processor 921 may perform spectrum sensing by executing the functions of the sensing unit 402.

[0173] The technology of the present disclosure may also be implemented as an in-vehicle system (or vehicle) 940 including a car navigation device 920, an in-vehicle network 941, and one or more blocks in a vehicle module 942. The vehicle module 942 generates vehicle data (such as vehicle speed, engine speed, and fault information), and outputs the generated data to the in-vehicle network 941.

[0174] The basic principles of the present invention are described above in conjunction with specific embodiments. However, it should be pointed out that for those skilled in the art, it is understandable that all or any steps or components of the method and device of the present invention can be implemented in any computing device (including a processor, storage medium, etc.) or a network of computing devices in the form of hardware, firmware, software, or a combination thereof. This can be achieved by those skilled in the art using their basic circuit design knowledge or basic programming skills after reading the description of the present invention.

[0175] Those skilled in the art can understand that, for example, the determination unit, adjustment unit, division unit, perception unit, judgment unit, etc. in the apparatus described above can be implemented by one or more processors, and for example, the acquisition unit, interaction unit, sending unit, receiving unit, etc. can be implemented by circuit components such as antennas, filters, modems and codecs.

[0176] Therefore, the present invention also proposes an electronic device (1), comprising: a circuit configured to: obtain spectrum utilization information of at least one wireless communication system on a predetermined frequency band; determine the spectrum utilization efficiency of the corresponding wireless communication system based on the spectrum utilization information; and adjust the spectrum perception parameters of the corresponding wireless communication system on the predetermined frequency band based on the spectrum utilization efficiency.

[0177] The present invention also proposes an electronic device (2), comprising: a circuit configured to: send spectrum utilization information of a cell served by a base station in a predetermined frequency band to a spectrum management device; and receive changes in spectrum sensing parameters from the spectrum management device.

[0178] The present invention also proposes an electronic device (3), comprising: a circuit configured to: receive an instruction for performing spectrum sensing and corresponding spectrum sensing parameters from a base station; perform spectrum sensing according to the spectrum sensing parameters in response to the instruction; and send the result of the spectrum sensing to the base station.

[0179] Furthermore, the present invention also provides a program product storing machine-readable instruction codes. When the instruction codes are read and executed by a machine, the method according to the embodiment of the present invention can be executed.

[0180] Accordingly, the storage medium for carrying the program product storing the machine-readable instruction code is also included in the disclosure of the present invention, including but not limited to a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory stick, and the like.

[0181] When the present invention is implemented by software or firmware, the data is transferred from a storage medium or a network to a computer (eg, Fig.16 The general-purpose computer 1600 shown in the figure is installed with the programs constituting the software, and when the various programs are installed, the computer can execute various functions, etc.

[0182] exist Fig.16 In the embodiment of the present invention, a central processing unit (CPU) 1601 performs various processes according to a program stored in a read-only memory (ROM) 1602 or a program loaded from a storage section 1608 to a random access memory (RAM) 1603. In the RAM 1603, data required when the CPU 1601 performs various processes and the like is also stored as needed. The CPU 1601, the ROM 1602, and the RAM 1603 are connected to each other via a bus 1604. An input / output interface 1605 is also connected to the bus 1604.

[0183] The following components are connected to the input / output interface 1605: an input section 1606 (including a keyboard, a mouse, etc.), an output section 1607 (including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.), a storage section 1608 (including a hard disk, etc.), a communication section 1609 (including a network interface card such as a LAN card, a modem, etc.). The communication section 1609 performs communication processing via a network such as the Internet. A drive 1610 may also be connected to the input / output interface 1605 as needed. A removable medium 1611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is installed on the drive 1610 as needed, so that a computer program read therefrom is installed in the storage section 1608 as needed.

[0184] In the case where the above-described series of processing is realized by software, a program constituting the software is installed from a network such as the Internet or a storage medium such as the removable medium 1611 .

[0185] It should be understood by those skilled in the art that such storage media is not limited to Fig.16 The removable medium 1611 shown has a program stored therein and is distributed separately from the device to provide the program to the user. Examples of the removable medium 1611 include magnetic disks (including floppy disks (registered trademark)), optical disks (including compact disk read-only memory (CD-ROM) and digital versatile disks (DVD)), magneto-optical disks (including minidiscs (MD) (registered trademark)), and semiconductor memories. Alternatively, the storage medium may be the ROM 1602, a hard disk included in the storage section 1608, or the like, in which the program is stored and distributed to the user together with the device containing them.

[0186] It should also be noted that in the apparatus, method and system of the present invention, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present invention. In addition, the steps of performing the above series of processes can naturally be performed in chronological order according to the order of description, but do not necessarily need to be performed in chronological order. Some steps can be performed in parallel or independently of each other.

[0187] Finally, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. In addition, in the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, article or device that includes the elements.

[0188] Although the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, it should be understood that the above-described embodiments are only used to illustrate the present invention and do not constitute a limitation of the present invention. For those skilled in the art, various modifications and changes can be made to the above-mentioned embodiments without departing from the essence and scope of the present invention. Therefore, the scope of the present invention is limited only by the attached claims and their equivalent meanings.

[0189] The present technology can also be implemented as follows.

[0190] (1) A spectrum management device, comprising:

[0191] An acquisition unit, configured to acquire spectrum utilization information of at least one wireless communication system in a predetermined area on a predetermined frequency band;

[0192] a determining unit configured to determine the spectrum utilization efficiency of the corresponding wireless communication system in the predetermined area according to the spectrum utilization information; and

[0193] The adjustment unit is configured to adjust the spectrum sensing parameters of the corresponding wireless communication system in the predetermined area on the predetermined frequency band according to the spectrum utilization efficiency.

[0194] (2) A spectrum management device according to (1), wherein the spectrum utilization information includes at least one of the following: actual activation status information of each cell of the wireless communication system in the predetermined area after spectrum sensing, the throughput of the wireless communication system in the predetermined area, and the signal-to-noise ratio of the wireless communication system in the predetermined area.

[0195] (3) The spectrum management device according to (1), wherein the spectrum sensing parameters include at least one of the following: an energy detection threshold for spectrum sensing, a spectrum sensing time length, the number of nodes participating in sensing in the case of distributed spectrum sensing, and a spectrum sensing decision criterion.

[0196] (4) The spectrum management device according to (1), wherein the acquisition unit is further configured to acquire information indicating the identification of each cell of the wireless communication system in the predetermined area, and the determination unit is further configured to determine whether the cell in the activated state and the cell that failed to be activated belong to the same type of system based on the information indicating the identification of each cell of the wireless communication system.

[0197] The adjusting unit is further configured to perform adjustment when the determining unit determines that the cell in the activated state and the cell that fails to be activated belong to the same system.

[0198] (5) The spectrum management device according to (1), wherein the adjustment unit is configured to adjust the spectrum sensing parameters of the corresponding wireless communication system within the predetermined area when the spectrum utilization efficiency deviates from an expected value, so that the spectrum utilization efficiency within the predetermined area reaches the expected value.

[0199] (6) The spectrum management apparatus according to (5), wherein the adjustment unit is configured to perform the adjustment based on a preset system model.

[0200] (7) The spectrum management device according to (6), wherein the preset system model includes at least one of the following: a channel model, a service model, a system spectrum activation probability model within the predetermined area, and a geographic location model.

[0201] (8) The spectrum management apparatus according to (5), wherein different expected values ​​of spectrum utilization efficiency are set for wireless communication systems having different spectrum utilization priorities.

[0202] (9) A spectrum management device according to (5), wherein the spectrum sensing parameter is an energy detection threshold, and the adjustment unit is configured to lower the energy detection threshold of the corresponding wireless communication system when the spectrum utilization efficiency is higher than the expected value, and / or to increase the energy detection threshold of the corresponding wireless communication system when the spectrum utilization efficiency is lower than the expected value.

[0203] (10) A spectrum management device according to (1), wherein the number of wireless communication systems managed by the spectrum management device is two or more, and the adjustment unit is configured to adjust the spectrum sensing parameters of the wireless communication system for a wireless communication system whose spectrum utilization efficiency does not reach an expected value without affecting the spectrum utilization efficiency of other wireless communication systems.

[0204] (11) According to the spectrum management device described in (10), the determination unit is configured to determine the spectrum utilization efficiency of the other wireless communication system according to a system simulation model.

[0205] (12) The spectrum management apparatus according to (10), wherein different wireless communication systems belong to different mobile operators or service providers.

[0206] (13) The spectrum management apparatus according to (1), wherein the number of wireless communication systems managed by the spectrum management apparatus is one, and the spectrum management apparatus further comprises:

[0207] The interaction unit is configured to interact with other spectrum management devices so that the adjustment unit performs the adjustment while considering the impact on other wireless communication systems.

[0208] (14) The spectrum management device according to (13), wherein the interaction unit is configured to send a parameter change request to other spectrum management devices when the adjustment unit makes an adjustment, and receive feedback from the other spectrum management devices, and the adjustment unit further adjusts the spectrum sensing parameter based on the feedback.

[0209] (15) A spectrum management device according to (14), wherein the feedback indicates whether the spectrum utilization efficiency of the wireless communication system managed by the other spectrum management device is affected, and the adjustment unit is configured to readjust the spectrum sensing parameter when the feedback indicates that the spectrum utilization efficiency of the wireless communication system managed by the other spectrum management device is affected.

[0210] (16) According to the spectrum management device described in (14), when the interaction unit receives a parameter change request from other spectrum management devices, the acquisition unit acquires the spectrum utilization information of the wireless communication system, the determination unit determines the spectrum utilization efficiency of the wireless communication system and determines whether the spectrum utilization efficiency is affected, and the interaction unit provides feedback indicating whether the spectrum utilization efficiency is affected to the other spectrum management devices.

[0211] (17) The spectrum management apparatus according to (1), wherein the acquisition unit is configured to acquire the spectrum utilization information in a wired manner.

[0212] (18) The spectrum management apparatus according to (1), wherein the predetermined frequency band is an unlicensed frequency band, and the acquisition unit is configured to acquire the spectrum utilization information through wireless communication in the licensed frequency band.

[0213] (19) The spectrum management device according to (10) is a geographic location database.

[0214] (20) A device for a base station of a wireless communication system, comprising:

[0215] a sending unit configured to send spectrum utilization information of a cell served by the base station in a predetermined frequency band to a spectrum management device; and

[0216] The receiving unit is configured to receive changes in spectrum sensing parameters from a spectrum management device.

[0217] (21) The apparatus according to (20), wherein the spectrum utilization information includes at least one of the following: actual activation status information of the cell after spectrum sensing, the throughput of the base station, and the signal-to-noise ratio of the base station.

[0218] (22) An apparatus according to (20), wherein the spectrum sensing parameters include at least one of the following: an energy detection threshold for spectrum sensing, a spectrum sensing time length, the number of nodes participating in sensing in the case of distributed spectrum sensing, and a spectrum sensing decision criterion.

[0219] (23) The apparatus according to (20), further comprising:

[0220] The judging unit is configured to judge whether the predetermined frequency band is available based on the spectrum sensing result of the base station.

[0221] (24) The apparatus according to (23), wherein the receiving unit is further configured to receive spectrum sensing results of other nodes, and the judging unit is further configured to make the judgment based on the spectrum sensing results of the other nodes.

[0222] (25) An apparatus according to (23), wherein the judgment unit is further configured to judge whether the cell and the cell occupying the predetermined frequency band belong to the same system when the predetermined frequency band is not available, and the sending unit provides the judgment result to the spectrum management apparatus.

[0223] (26) The apparatus according to (25), wherein the judgment unit is configured to judge whether the system belongs to the same type based on at least one of the following: identification information of the cell, reference signal detection.

[0224] (27) A device for a user equipment side of a wireless communication system, comprising:

[0225] A receiving unit, configured to receive an instruction for performing spectrum sensing and corresponding spectrum sensing parameters from a base station;

[0226] a sensing unit configured to perform spectrum sensing according to the spectrum sensing parameters in response to the instruction; and

[0227] The sending unit is configured to send the spectrum sensing result to the base station.

[0228] (28) An apparatus according to (27), wherein the spectrum sensing parameters include at least one of the following: an energy detection threshold for spectrum sensing, a spectrum sensing time length, the number of nodes participating in sensing in the case of distributed spectrum sensing, and a spectrum sensing decision criterion.

[0229] (29) A spectrum management method, comprising:

[0230] Acquiring spectrum utilization information of at least one wireless communication system in a predetermined frequency band within a predetermined area;

[0231] Determining the spectrum utilization efficiency of the corresponding wireless communication system in the predetermined area according to the spectrum utilization information; and

[0232] The spectrum sensing parameters of the corresponding wireless communication system in the predetermined area on the predetermined frequency band are adjusted according to the spectrum utilization efficiency.

[0233] (30) A method for a base station side of a wireless communication system, comprising:

[0234] Sending spectrum utilization information of a cell served by the base station in a predetermined frequency band to a spectrum management device; and

[0235] A change in a spectrum sensing parameter is received from a spectrum management device.

[0236] (31) A method for a user equipment side of a wireless communication system, comprising:

[0237] receiving an instruction to perform spectrum sensing and corresponding spectrum sensing parameters from a base station;

[0238] performing spectrum sensing according to the spectrum sensing parameters in response to the instruction; and

[0239] The spectrum sensing result is sent to the base station.

Claims

1. An electronic device, comprising: The circuit is configured as: Acquiring spectrum utilization information in a predetermined frequency band within a predetermined area; Determining, according to the spectrum utilization information, a probability of acquiring spectrum resources in the predetermined area; as well as adjusting a spectrum sensing parameter in the predetermined area on the predetermined frequency band according to the probability; The spectrum sensing parameters include an energy detection threshold for spectrum sensing, and the circuit is further configured to: lower the energy detection threshold when the probability is higher than an expected value, and / or increase the energy detection threshold when the probability is lower than the expected value.

2. The electronic device according to claim 1, wherein: The spectrum utilization information includes at least one of the following: actual activation status information of each cell in the predetermined area after spectrum sensing, throughput of the wireless communication system in the predetermined area, and signal-to-noise ratio of the wireless communication system in the predetermined area.

3. The electronic device according to claim 1, wherein: The spectrum sensing parameters also include at least one of the following: a spectrum sensing time length, a number of nodes participating in sensing in the case of distributed spectrum sensing, and a spectrum sensing decision criterion.

4. The electronic device according to claim 1, wherein: The circuit is also configured to: Acquiring information indicating the identity of each cell within the predetermined area; determining whether the cell in the activated state and the cell that failed to be activated belong to the same type of system according to information indicating the identification of each cell; as well as The adjustment is performed when it is determined that the cell in the activated state and the cell that fails to be activated belong to the same system.

5. The electronic device according to claim 1, wherein: The circuit is further configured to perform the adjustment based on a preset system model.

6. The electronic device according to claim 5, wherein: The preset system model includes at least one of the following: a channel model, a service model, a system spectrum activation probability model within the predetermined area, and a geographical location model.

7. The electronic device according to claim 1, wherein: Different expected values ​​of probability are set for wireless communication systems having different spectrum utilization priorities.

8. The electronic device according to claim 1, wherein: The circuit is also configured to interact with other electronic devices so that the adjustment is made taking into account the impact on the other electronic devices.

9. The electronic device according to claim 1, wherein: The circuit is also configured to obtain the spectrum utilization information in a wired manner.

10. The electronic device according to claim 1, wherein: The predetermined frequency band is an unlicensed frequency band, and the circuit is further configured to obtain the spectrum utilization information through wireless communication in the licensed frequency band.

11. An electronic device for a base station, comprising: The circuit is configured as: Sending spectrum utilization information of a cell served by the base station on a predetermined frequency band; as well as receiving changes in spectrum sensing parameters; The spectrum sensing parameters include an energy detection threshold for spectrum sensing, wherein the energy detection threshold is lowered when the probability of acquiring spectrum resources in a predetermined area is higher than an expected value, and / or the energy detection threshold is increased when the probability is lower than the expected value.

12. The electronic device according to claim 11, wherein: The spectrum utilization information includes at least one of the following: actual activation state information of the cell after spectrum sensing, the throughput of the base station, and the signal-to-noise ratio of the base station.

13. The electronic device according to claim 11, wherein: The spectrum sensing parameters also include at least one of the following: a spectrum sensing time length, a number of nodes participating in sensing in the case of distributed spectrum sensing, and a spectrum sensing decision criterion. 14 . The electronic device according to claim 11 , wherein the circuit is further configured to determine whether the predetermined frequency band is available based on a spectrum sensing result of the base station.

15. The electronic device according to claim 14, wherein: The circuit is further configured to: receive spectrum sensing results of other nodes; and make the judgment based on the spectrum sensing results of other nodes.

16. A spectrum management method, comprising: Acquiring spectrum utilization information in a predetermined frequency band within a predetermined area; Determining, according to the spectrum utilization information, a probability of acquiring spectrum resources in the predetermined area; as well as adjusting a spectrum sensing parameter in the predetermined area on the predetermined frequency band according to the probability; The spectrum sensing parameter includes an energy detection threshold for spectrum sensing, and the spectrum management method further includes: The energy detection threshold is lowered when the probability is higher than an expected value, and / or the energy detection threshold is increased when the probability is lower than the expected value.

17. A method for a base station side, comprising: Sending spectrum utilization information of a cell served by the base station on a predetermined frequency band; as well as receiving changes in spectrum sensing parameters; The spectrum sensing parameters include an energy detection threshold for spectrum sensing, wherein the energy detection threshold is lowered when the probability of acquiring spectrum resources in a predetermined area is higher than an expected value, and / or the energy detection threshold is increased when the probability is lower than the expected value.

18. A wireless communication system, comprising: A first electronic device includes a circuit configured to: Acquiring spectrum utilization information in a predetermined frequency band within a predetermined area; Determining, based on the spectrum utilization information, a probability of acquiring spectrum resources within the predetermined area; and adjusting the spectrum sensing parameters in the predetermined area on the predetermined frequency band according to the probability, The spectrum sensing parameter includes an energy detection threshold for spectrum sensing, and the circuit is further configured to: reduce the energy detection threshold when the probability is higher than an expected value, and / or increase the energy detection threshold when the probability is lower than the expected value; and A second electronic device includes a circuit configured to: sending the spectrum utilization information of the cell served by the second electronic device on the predetermined frequency band; and A change in the spectrum sensing parameter is received.

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