COMMUNICATION CONTROL DEVICE AND COMMUNICATION CONTROL METHOD

Abstract

A communication control device (40) includes a control unit (44). On the basis of the use form and use position information of a wireless station of a primary system, the control unit (44) selects one from a plurality of protection methods for the primary system, including a dynamic or static protection method, and then carries out the protection for the wireless station of the primary system according to the selected protection method.

Description

[Technical field]

[0001] The present disclosure relates to a communication control device and a communication control method. [Background technology]

[0002] In the United States, methods for protecting primary systems such as CBRS (Citizens Broadband Radio Service) that utilize frequency sharing technology have been formulated through legislation and standards.

[0003] Additionally, in Japan, it is expected that FPUs (Field Pickup Units) operating in the 2.3 GHz band will be subject to frequency sharing. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] WINNF-TS-0247-V1.0.0 CBRS Certified Professional Installer Accreditation Technical Specification [Non-Patent Document 2] WINNF-TS-0016-V1.2.1 Signaling Protocols and Procedures for Citizens Broadband Radio Service (CBRS): Spectrum Access System (SAS) - Citizens Broadband Radio Service Device (CBSD) Interface Technical Specification [Non-Patent Document 3] ECC Report 186, Technical and operational requirements for the operation of white space devices under geo-location approach, CEPT ECC, 2013 January [Non-Patent Document 4] White Space Database Provider (WSDB) Contract, available at https: / / www.ofcom.org.uk / __data / assets / pdf_file / 0026 / 84077 / white_space_database_contract_for_operational_use_of_wsds.pdf [Non-Patent Document 5] WINNF-TS-0096-V1.2.0 Signaling Protocols and Procedures for Citizens Broadband Radio Service (CBRS): Spectrum Access System (SAS) - SAS Interface Technical Specification [Non-Patent Document 6] WINNF-TS-0112-V1.4.1 Requirements for Commercial Operation in the US 3550-3700 MHz Citizens Broadband Radio Service Band [Non-Patent Document 7] Report of the 93rd Broadcasting System Committee of the Communications Technology Subcommittee of the Information and Communications Council Summary of the Invention [Problem to be solved by the invention]

[0005] However, in frequency bands where the radio system of an FPU (Field Pickup Unit) is the primary system, the protection method for the primary system to be used may differ even if the primary system is the same. For this reason, there is a risk that the conventional protection method for primary systems as formulated in the United States will not be able to accommodate the sharing of frequency bands in Japan.

[0006] Therefore, the present disclosure proposes a communication control device and a communication control method that can appropriately protect the primary system from the secondary system. [Means for solving the problem]

[0007] In order to solve the above problems, a communication control device of one embodiment according to the present disclosure includes a control unit that selects one from a plurality of primary system protection methods, including dynamic and static protection methods, based on the usage pattern and usage location information of the radio stations of the primary system, and performs protection of the radio stations of the primary system based on the selected protection method. [Brief description of the drawings]

[0008] [Figure 1] FIG. 11 is an explanatory diagram showing an example of allocation of interference margins to each communication device constituting a secondary system. [Diagram 2] FIG. 1 is a diagram showing an overview of a method for protecting a primary system according to an embodiment of the present invention. [Diagram 3] FIG. 1 is an explanatory diagram showing a hierarchical structure in CBRS. [Figure 4] An explanatory diagram showing the CBRS band. [Diagram 5] FIG. 1 is a diagram illustrating a configuration example of a communication system according to an embodiment of the present disclosure. [Figure 6] FIG. 1 is a diagram showing a model in which communication control devices are arranged in a distributed manner. [Figure 7] FIG. 1 is a diagram showing a model in which one communication control device centrally controls a plurality of communication control devices. [Figure 8]FIG. 2 is a diagram illustrating a configuration example of a base station device according to an embodiment of the present disclosure. [Figure 9] FIG. 2 is a diagram illustrating a configuration example of a terminal device according to an embodiment of the present disclosure. [Figure 10] FIG. 2 is a diagram illustrating a configuration example of a communication control device according to an embodiment of the present disclosure. [Figure 11] FIG. 2 is a diagram illustrating a configuration example of a proxy device according to an embodiment of the present disclosure. [Figure 12] FIG. 1 is an explanatory diagram illustrating an example of an interference model assumed in an embodiment of the present disclosure. [Figure 13] FIG. 11 is an explanatory diagram showing another example of an interference model assumed in an embodiment of the present disclosure. [Figure 14] FIG. 1 is an explanatory diagram for explaining a primary system protection method of simultaneous interference margin allocation type. [Figure 15] FIG. 13 is a diagram showing a state in which a residual interference margin occurs. [Figure 16] FIG. 1 is an explanatory diagram for explaining a primary system protection method of sequentially allocating interference margins; [Figure 17] FIG. 11 is a sequence diagram illustrating a registration procedure. [Figure 18] FIG. 11 is a sequence diagram for explaining an available frequency information inquiry procedure. [Figure 19] FIG. 11 is a sequence diagram for explaining a frequency use permission procedure. [Figure 20] FIG. 4 is a state transition diagram showing permission states of radio wave transmission. [Figure 21] FIG. 11 is a sequence diagram for explaining a frequency usage notification procedure. [Figure 22] FIG. 11 is a sequence diagram illustrating a procedure for exchanging management information. [Figure 23] 13 is a flowchart showing a procedure for protecting a primary system. [Figure 24] 13 is a flowchart showing an example of a procedure for switching (selecting) a primary system protection method. [Diagram 25] 1 is a diagram showing an example of the positional relationship between the utilization location of a primary wireless station and the utilization areas of other wireless stations; [Figure 26] 11 is a diagram illustrating an example of a relationship between a protection method of a primary wireless station and its use time, and a protection method of another wireless station and its use time. FIG. [Figure 27] 1 is a diagram illustrating an example of an occupied band of a primary wireless station and an occupied band of another wireless station; [Figure 28] FIG. 1 is a diagram illustrating an example of an antenna installation range. [Figure 29] FIG. 2 is a diagram showing an example of a protected area of ​​a mobile station; [Diagram 30] FIG. 2 is a diagram showing an example of a protected area of ​​a mobile station; [Diagram 31] FIG. 2 is a diagram showing an example of a protection area of ​​a fixed station; [Diagram 32] FIG. 2 is a diagram showing an example of a protected area of ​​a mobile station; [Diagram 33] FIG. 13 is a diagram showing an example of predicted protected points and protected areas. [Diagram 34] FIG. 13 is a diagram showing an example of predicted protected points and protected areas. [Diagram 35] FIG. 13 is a diagram showing an example of a dynamic protection target area for each region obtained by dividing an entire moving area. [Diagram 36] FIG. 13 is a diagram showing an example of setting two-dimensional directions of antennas to be protected. [Figure 37] FIG. 13 is a diagram showing an example of setting a three-dimensional direction of an antenna to be protected. [Figure 38] FIG. 13 is a diagram showing an example of setting two-dimensional directions of antennas to be protected. [Figure 39] FIG. 13 is a diagram showing an example of setting a three-dimensional direction of an antenna to be protected. [Diagram 40] 11 is a diagram showing an example of setting different directions of antennas to be protected for each protection point; FIG. [Diagram 41] FIG. 13 is a diagram showing an example of setting a two-dimensional dynamic antenna rotation range. [Diagram 42] FIG. 13 is a diagram showing an example of setting a three-dimensional dynamic antenna rotation range. [Diagram 43] FIG. 1 is a diagram showing an overview (part 1) of range prediction of antenna parameters. [Diagram 44] FIG. 13 is a diagram showing an overview (part 2) of range prediction of antenna parameters. [Diagram 45] FIG. 13 is a diagram showing an overview (part 3) of range prediction of antenna parameters. [Figure 46] FIG. 13 is a diagram showing an overview (part 4) of range prediction of antenna parameters. [Figure 47] FIG. 13 is a diagram showing an overview (part 5) of range prediction of antenna parameters. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the following embodiments, the same components are designated by the same reference numerals, and duplicated descriptions may be omitted.

[0010] In addition, in this specification and drawings, multiple components having substantially the same functional configuration may be distinguished by adding different numbers after the same reference numeral. For example, multiple components having substantially the same functional configuration may be referred to as the communication control device 40 as necessary. 1 , and 40 2 However, when there is no need to distinguish between multiple components having substantially the same functional configuration, only the same reference numerals are used. For example, the communication control device 40 1 , and 40 2 When there is no need to particularly distinguish between them, they will be simply referred to as communication control device 40.

[0011] The present disclosure will be described in the following order. 1. Introduction 1-1. Control of wireless systems to achieve frequency sharing 1-2. Overview of this embodiment 1-3. Terminology related to frequencies and sharing 2.Communication System Configuration 2-1. Overall configuration of the communication system 2-2. Base station equipment configuration 2-3. Terminal device configuration 2-4.Communication control device configuration 2-5. Proxy device configuration 3. Interference model 4. Primary system protection methods 4-1. Interference margin simultaneous distribution type 4-2. Interference margin sequential allocation type 5. Explanation of procedures 5-1. Registration procedure 5-2. Procedures for enquiring about available frequency information 5-3.Frequency use permission procedures 5-4.Frequency usage notification 5-5. Supplementary information on procedures 5-6. Procedures for terminal equipment 5-7. Procedures that occur between communication control devices 6. Primary System Protection 6-1. Assumed protection model for primary system 6-2. Information about primary radio stations 6-3. Primary system protection 6-4.Point area protection considering antenna rotation range 7. Variations 7-1. Modifications to system configuration 7-2.Other modifications 8. Conclusion

[0012] <<1. Introduction>> In recent years, the problem of exhaustion of radio wave resources (frequencies) that can be allocated to wireless systems has surfaced due to the increasing and diversifying amount of content via wireless in the wireless environment with a mixture of various wireless systems. However, it is known that all radio wave bands are already in use by existing wireless systems, making it difficult to allocate new radio wave resources. Therefore, in order to generate the necessary radio wave resources, there has been a demand for utilizing the time- and spatially available white space of existing wireless systems (dynamic spectrum access (DSA)) by utilizing cognitive radio technology.

[0013] In recent years, in the United States, legislation and standardization of the Citizens Broadband Radio Service (CBRS), which utilizes frequency sharing technology, has been accelerating, aiming to open up the Federal use band (3.55-3.70GHz) to the general public. The Federal use band (3.55-3.70GHz) overlaps with the frequency bands known worldwide as 3GPP bands 42 and 43. Cognitive radio technology not only contributes to dynamic frequency sharing, but also to improving the frequency utilization efficiency of wireless systems. For example, ETSI EN 303 387 and IEEE 802.19.1-2014 specify coexistence technology between wireless systems that utilizes databases.

[0014] In Japan, the 2019 frequency reorganization action calls for the promotion of dynamic frequency sharing targeting the 2.3 GHz and 26 GHz bands, etc. These bands are already used for broadcasting and public services, fixed wireless access systems, airport surface detection radar, low-power data communication systems, etc., and it is possible that these systems will be subject to frequency sharing.

[0015] <1-1. Control of wireless systems to achieve frequency sharing> In general, in frequency sharing, the regulatory authority (NRA: National Regulatory Authority) of each country or region is required to protect the radio system (primary system) of the primary user who has been licensed or approved to use the frequency band. Typically, the NRA sets an acceptable interference standard value for the primary system, and the radio system (secondary system) of the secondary user is required to keep the interference caused by sharing below the acceptable interference standard value.

[0016] In order to realize frequency sharing, for example, a communication control device (e.g., a frequency management database) controls communication of the secondary system so as not to cause fatal interference to the primary system. The communication control device is a device that manages communication of the communication device. For example, the communication control device is a device (system) for managing radio resources (e.g., frequencies) such as a GLDB (Geo-location Database) or a SAS (Spectrum Access System). In this embodiment, the communication control device corresponds to a communication control device 40 described later. The communication control device 40 will be described in detail later.

[0017] Here, the primary system is, for example, a system (e.g., an existing system) that uses radio waves in a specific frequency band in priority over other systems such as secondary systems. In the 2.3 GHz band, this applies to FPUs used by broadcasting companies and wireless systems used for public services. The primary system is not required to avoid or suppress interference with the secondary system. In addition, the primary system is protected from interference by the secondary system. In other words, the primary system can use the frequency band without considering the existence of the secondary system.

[0018] A secondary system is, for example, a system that makes secondary use (for example, dynamic frequency sharing) of radio waves in the frequency band used by a primary system. A secondary system is required to avoid or suppress interference with a primary system that has a higher priority. Secondary systems include wireless systems operated by licensed operators as well as wireless systems that do not require licenses and can be freely used by users.

[0019] The primary system and the secondary system may each be composed of a plurality of communication devices, or may each be composed of one communication device. The communication control device allocates an interference allowance to one or more communication devices so that the interference aggregation of one or more communication devices constituting the secondary system to the primary system does not exceed the interference allowance (also called interference margin) of the primary system. At this time, the interference allowance may be an amount of interference that is predetermined by the operator of the primary system or a public institution that manages radio waves. In the following description, the term "interference margin" refers to the interference allowance. The interference accumulation may also be called the cumulative interference power.

[0020] FIG. 1 is an explanatory diagram showing an example of the allocation of interference margins to each communication device constituting a secondary system. In the example of FIG. 1, a communication system 1 is a primary system, and a communication system 2 is a secondary system. The communication system 1 includes a wireless communication device 10. 1 The communication system 2 includes a base station device 20. 1 , 20 2 , 20 3 1, the communication system 1 includes only one wireless communication device 10, but the communication system 1 may include multiple wireless communication devices 10. In the example of FIG. 1, the communication system 2 includes three base station devices 20, but the communication system 2 may include more than three base station devices 20. The wireless communication devices included in the communication system 2 do not necessarily have to be base station devices. In the example of FIG. 1, only one primary system (communication system 1 in the example of FIG. 1) and one secondary system (communication system 2 in the example of FIG. 1) are shown, but there may be multiple primary systems and multiple secondary systems.

[0021] Wireless communication device 10 1 , and the base station device 20 1 , 20 2 , 20 3 Each of the wireless communication devices 10 is capable of transmitting and receiving radio waves.1 The amount of interference tolerated by I accept In addition, the base station device 20 1 , 20 2 , 20 3 The amount of interference that each of the communication systems 1 (primary system) causes to a specific protection point is expressed as I 1 , I 2 , I 3 Here, the protection point is a reference point for calculating interference for protecting the communication system 1.

[0022] The communication control device calculates the cumulative interference (received interference amount I shown in FIG. 1) at a predetermined protection point of the communication system 1. 1 +I 2 +I 3 ) is the interference margin I accept In order not to exceed the interference margin I accept For example, the communication control device allocates the amount of interference I 1 , I 2 , I 3 are I accept Each base station device 20 is provided with an interference margin I accept Alternatively, the communication control device allocates the amount of interference I 1 , I 2 , I 3 are I accept Each base station device 20 is provided with an interference margin I accept The method of allocating the interference margin is not limited to this example.

[0023] Based on the allocated amount of interference (hereinafter referred to as the allocated interference amount), the communication control device calculates the maximum transmission power (hereinafter referred to as the maximum allowable transmission power) permitted for each base station device 20. For example, the communication control device calculates the maximum allowable transmission power for each base station device 20 by performing a reverse calculation from the allocated amount of interference based on propagation loss, antenna gain, etc. Then, the communication control device notifies each base station device 20 of information on the calculated maximum allowable transmission power.

[0024] <1-2. Overview of this embodiment> In conventional primary system protection such as CBRS in the United States, the primary system protection method to be used for each primary system is specified by legislation, standards, etc.

[0025] On the other hand, in Japan, it is expected that wireless systems such as FPUs will be subject to frequency sharing, but in such bands, even with the same primary system, the presence or absence of plans for movement and use differs depending on the usage scenario and type of wireless station. Therefore, the primary system protection method to be used differs depending on the usage scenario and type of wireless station. Conventional primary system protection does not support frequency sharing in Japan because there is no standard for selecting the primary system protection method.

[0026] In addition, conventional primary system protection is designed for only limited cases, such as cases where a parameter related to the antenna rotation range of the protected wireless station is given as a value, or cases where the primary system needs to be protected for Federal Incumbent regardless of the direction the antenna is facing.

[0027] In contrast, in a primary system such as an FPU, it is assumed that the antenna will rotate during planned use, causing parameters to fluctuate, and that the parameters related to the antenna rotation will change whenever the radio station is used in an unplanned manner. For this reason, it is necessary to be able to take into account the antenna rotation range during use for primary system protection, and the antenna direction during emergency use, but conventional primary protection systems do not take these factors into account.

[0028] Therefore, the communication control device of the present disclosure selects one of a plurality of protection methods for the primary system, including dynamic or static protection methods, based on the usage pattern and usage location information of the radio stations of the primary system.Then, the communication control device of the present disclosure protects the radio stations of the primary system based on the selected protection method.Figure 2 is a diagram showing an overview of the protection method for the primary system according to this embodiment.

[0029] As shown in FIG. 2, the communication control device of the present disclosure considers whether the usage mode is planned usage or unplanned usage, along with usage location information of the wireless stations of the primary system. Then, when the usage mode is planned usage, the communication control device of the present disclosure selects either static point protection or static area protection, which are static protection methods, as a protection method for the wireless stations of the primary system. Then, the communication control device of the present disclosure implements protection of the primary system based on the selected static point protection or static area protection. On the other hand, when the usage mode is unplanned usage, the communication control device of the present disclosure selects either dynamic point protection or dynamic area protection, which are dynamic protection methods, as a protection method for the wireless stations of the primary system. Then, the communication control device of the present disclosure implements protection of the primary system based on the selected dynamic point protection or dynamic area protection.

[0030] In this manner, the communication control device of the present disclosure makes it possible to appropriately protect the primary system from the secondary system.

[0031] <1-3. Terminology related to frequencies and sharing> In this embodiment, the primary system (communication system 1) and the secondary system (communication system 2) are assumed to be in a dynamic frequency sharing environment. Hereinafter, this embodiment will be described taking CBRS, which is legalized by the FCC (Federal Communications Commission) of the United States, as an example. Note that the communication system 1 and the communication system 2 of this embodiment are not limited to CBRS.

[0032] FIG. 3 is an explanatory diagram showing a hierarchical structure in CBRS. As shown in FIG. 3, each user of a frequency band is classified into one of three groups. Each group is called a "tier". A hierarchical structure consisting of an incumbent tier, a priority access tier, and a general authorized access tier is defined for each of these three groups. In this hierarchical structure, the priority access tier is located above the general authorized access tier, and the incumbent tier is located above the priority access tier. Taking CBRS as an example, a system located in the incumbent tier (incumbent system) is a primary system, and systems located in the general authorized access tier and the priority access tier are secondary systems.

[0033] The Incumbent Tier is a group of existing users of the shared frequency band. In CBRS, the Department of Defense (DOD), fixed satellite operators, and Grandfathered Wireless Broadband Licensees (GWBLs) are defined as incumbent users. The Incumbent Tier is not required to avoid or suppress interference with the Priority Access Tier and the General Authorized Access (GAA) Tier, which have lower priorities. The Incumbent Tier is also protected from interference by the Priority Access Tier and the GAA Tier. In other words, users of the Incumbent Tier can use the frequency band without considering the existence of other groups.

[0034] The Priority Access Tier is a group of users who have a license called PAL (Priority Access License). The Priority Access Tier is required to avoid or suppress interference with the Incumbent Tier, which has a higher priority, but is not required to avoid or suppress interference with the GAA Tier, which has a lower priority. The Priority Access Tier is not protected from interference with the Incumbent Tier, which has a higher priority, but is protected from interference with the GAA Tier, which has a lower priority. The General Authorized Access Tier (GAA Tier) is a group of all other users who do not belong to the Incumbent Tier and Priority Access Tier. They are required to avoid or suppress interference with the Incumbent Tier and Priority Access Tier, which have a higher priority. The GAA Tier is not protected from interference with the Incumbent Tier and Priority Access Tier, which have a higher priority. In other words, the “GAA Tier” is a “tier” where opportunistic frequency usage is legally required.

[0035] The hierarchical structure is not limited to these definitions. CBRS is generally called a 3-tier structure, but may be a 2-tier structure. A representative example is a 2-tier structure such as LSA (Licensed Shared Access) or TVWS (TV band White Space). LSA adopts a structure equivalent to the combination of the above-mentioned "Incumbent Tier" and "Priority Access Tier". TVWS adopts a structure equivalent to the combination of the above-mentioned "Incumbent Tier" and "GAA Tier". Four or more tiers may exist. Specifically, for example, an intermediate layer equivalent to the "Priority Access Tier" may be further prioritized. For example, the "GAA Tier" may also be prioritized in the same manner.

[0036] FIG. 4 is an explanatory diagram showing the band of CBRS. Taking the above-mentioned CBRS as an example, the primary system is a military radar system, a grandfathered wireless system, or a fixed satellite service (space-to-earth). Here, the military radar system is typically a ship-based radar. The secondary system is a wireless network system consisting of base stations and terminals called CBSD (Citizens Broadband Radio Service Device) and EUD (End User Device). The secondary system further has a priority, and a priority access license (PAL) that can license and use the shared band and a general authorized access (GAA) that is equivalent to an unlicensed access are defined. Tier 1 shown in FIG. 4 corresponds to the existing layer shown in FIG. 3. Tier 2 shown in FIG. 4 corresponds to the priority access layer shown in FIG. 3. Also, Tier 3 shown in FIG. 4 corresponds to the general authorized access tier shown in FIG.

[0037] The primary system (communication system 1) of the present embodiment is not limited to the example shown in FIG. 4. Other types of wireless systems may be used as the primary system (communication system 1). For example, other wireless systems may be used as the primary system depending on the country, region, and frequency band to which the system is applied. For example, the primary system may be a television broadcasting system such as a DVB-T (Digital Video Broadcasting-Terrestrial) system. The primary system may also be a wireless system called a FS (Fixed System). The primary system may also be a frequency sharing system in other frequency bands. For example, representative examples include LSA and TV band White Space (TVWS). The primary system may also be a cellular communication system such as LTE (Long Term Evolution) and NR (New Radio). The primary system may also be an aviation wireless system such as ARNS (Aeronautical Radio Navigation Service). Of course, the primary system is not limited to the above wireless systems, and may be other types of wireless systems.

[0038] Moreover, the free radio waves (white space) used by the communication system 2 is not limited to the frequency band of the Federal use band (3.55-3.70 GHz). The communication system 2 may make secondary use of a frequency band other than the Federal use band (3.55-3.70 GHz). For example, if the primary system (communication system 1) is a television broadcasting system, the communication system 2 may be a system that makes secondary use of the TV white space. Here, the TV white space refers to a frequency band that is not used by a television broadcasting system (primary system) among frequency channels allocated to the television broadcasting system. In this case, the TV white space may be a channel that is not used depending on the region.

[0039] Furthermore, the relationship between the communication system 1 and the communication system 2 is not limited to a frequency sharing relationship in which the communication system 1 is a primary system and the communication system 2 is a secondary system. The relationship between the communication system 1 and the communication system 2 may be a network coexistence relationship between the same or different wireless systems using the same frequency.

[0040] In general, in frequency sharing, an existing system using a target band is called a primary system, and a system of a secondary user is called a secondary system. However, when the present embodiment is applied to an environment other than a frequency sharing environment, these (primary system, secondary system) may be replaced with other terms for systems. For example, a macro cell in a HetNet may be the primary system, and a small cell or a relay station may be the secondary system. Also, a base station may be the primary system, and a Relay UE or Vehicle UE that realizes D2D or V2X within its coverage may be the secondary system. The base station is not limited to a fixed type, and may be a portable / mobile type. In such a case, for example, the communication control device provided by the present invention may be provided in a base station, a relay station, a Relay UE, or the like.

[0041] In addition, the term "frequency" used in the following description may be replaced with another term. For example, the term "frequency" may be replaced with terms such as "resource", "resource block", "resource element", "channel", "component carrier", "carrier", "subcarrier", or terms having similar meanings. In addition, frequency is a type of radio wave resource. "Radio wave resource" can also be referred to as "frequency resource".

[0042] <<2. Communication System Configuration>> A communication system 2 according to an embodiment of the present disclosure will be described below. The communication system 2 is a wireless communication system that performs wireless communication by secondary use of a frequency band used by the communication system 1 (first wireless system). For example, the communication system 2 is a wireless communication system that dynamically shares a part or all of a frequency band allocated to the communication system 1. The communication system 2 provides wireless services to a user or a device owned by the user by using a predetermined radio access technology.

[0043] Here, the communication system 2 may be a cellular communication system such as W-CDMA (Wideband Code Division Multiple Access), cdma2000 (Code Division Multiple Access 2000), LTE, or NR. In the following description, "LTE" includes LTE-Advanced (LTE-A), LTE-A Pro (LTE-Advanced Pro), and EUTRA (Evolved Universal Terrestrial Radio Access). Also, "NR" includes NRAT (New Radio Access Technology) and FEUTRA (Further EUTRA). Note that the communication system 2 is not limited to a cellular communication system. For example, the communication system 2 may be another wireless communication system such as a wireless LAN (Local Area Network) system, a television broadcasting system, an aviation wireless system, or a space wireless communication system.

[0044] In this embodiment, the communication system 1 is a primary system, and the communication system 2 is a secondary system. As described above, there may be a plurality of communication systems 1 and a plurality of communication systems 2. In the example of FIG. 1, the communication system 1 includes one wireless communication device 10 (the wireless communication device 10 shown in FIG. 1). 1 ), but may be composed of multiple wireless communication devices 10. The configuration of the wireless communication device 10 may be the same as the configuration of a base station device 20 or a terminal device 30, which will be described later.

[0045] <2-1. Overall configuration of the communication system> The communication system 2 typically comprises the following entities: Communication devices (e.g., base station devices and proxy devices) Terminal equipment Communication control device

[0046] In the following description, the entity that becomes the communication device is assumed to be the base station device 20 and / or the proxy device 50, but the entity that becomes the communication device is not limited to the base station device 20 and the proxy device 50 and may be another communication device (e.g., the terminal device 30 and the communication control device 40).

[0047] Fig. 5 is a diagram showing a configuration example of a communication system 2 according to an embodiment of the present disclosure. The communication system 2 includes a base station device 20, a terminal device 30, a communication control device 40, and a proxy device 50. The communication system 2 provides wireless services to a user or a device owned by the user by each device (e.g., communication devices such as wireless communication devices) constituting the communication system 2 working in cooperation with each other. A wireless communication device is a device having a wireless communication function, and in the example of Fig. 5, the base station device 20 and the terminal device 30 correspond to the device.

[0048] The communication control device 40 and the proxy device 50 may have a wireless communication function. In this case, the communication control device 40 and the proxy device 50 can also be considered as wireless communication devices. In the following description, a wireless communication device may be simply called a communication device. Note that a communication device is not limited to a wireless communication device, and for example, a device that does not have a wireless communication function and is only capable of wired communication can also be considered as a communication device.

[0049] The communication system 2 may include a plurality of base station devices 20, terminal devices 30, communication control devices 40, and proxy devices 50. In the example of FIG. 5, the communication system 1 includes the base station device 20 as the base station device 20. 1 , 20 2 , 20 3 , 204 , 20 5 The communication system 2 includes a terminal device 30. 1 , 30 2 , 30 3 , 30 4 The communication system 1 includes a communication control device 40. 1 , 40 2 It is equipped with the following:

[0050] In the following description, the wireless communication device may be referred to as a wireless system. For example, the wireless communication device 10 and the base station device 20 1 ~20 5 Each of the terminal devices 30 is a wireless system. 1 ~30 4 are each one wireless system. In the following description, the communication system 1 is referred to as a first wireless system, but one or more wireless communication devices 10 included in the communication system 1 may be regarded as a first wireless system. In the following description, one or more base station devices 20 included in the communication system 2 are referred to as a second wireless system, but the communication system 2 itself may be regarded as a second wireless system, or one or more terminal devices 30 included in the communication system 2 may be regarded as a second wireless system. If the communication control device 40 and the proxy device 50 have a wireless communication function, each of the communication control devices 40 or each of the proxy devices 50 may be regarded as a second wireless system.

[0051] The wireless system may be a system composed of a plurality of communication devices including at least one wireless communication device. For example, a system composed of one or a plurality of base station devices 20 and one or a plurality of terminal devices 30 subordinate thereto may be regarded as a wireless system. Also, the communication system 1 or the communication system 2 may each be regarded as a wireless system. In the following description, a communication system composed of a plurality of communication devices including at least one wireless communication device may be referred to as a wireless communication system or simply as a communication system. A system composed of a plurality of communication devices including one wireless communication device may be regarded as a first wireless system or a second wireless system.

[0052] [Base station equipment] The base station device 20 (second wireless system) is a wireless communication device that wirelessly communicates with the terminal device 30 or other communication devices (other base station devices 20, other proxy devices 50). The base station device 20 is a type of communication device. The base station device 20 is, for example, a device equivalent to a wireless base station (Base Station, Node B, eNB, gNB, etc.) or a wireless access point. The base station device 20 may be a wireless relay station. The base station device 20 may be a road base station device such as an RSU (Road Side Unit). The base station device 20 may also be a radio extension device called an RRH (Remote Radio Head). The base station device 20 may also be a receiving station of a Field Pickup Unit (FPU). In this embodiment, a base station of a wireless communication system may be referred to as a base station device. The wireless access technology used by the base station device 20 may be a cellular communication technology or a wireless LAN technology. The wireless access technology used by the base station device 20 does not need to be limited to these, and may be another wireless access technology.

[0053] The base station device 20 does not necessarily have to be fixed, and may be installed on a moving object such as an automobile. The base station device 20 does not necessarily have to be located on the ground, and may be provided with a communication device function on an object in the air or space such as an aircraft, a drone, a helicopter, or a satellite, or on or under the sea such as a ship or a submarine. In such a case, the base station device 20 may perform wireless communication with another communication device that is fixedly installed.

[0054] The size of the coverage of the base station device 20 may be as large as a macrocell or as small as a picocell. Of course, the size of the coverage of the base station device 20 may be extremely small, such as a femtocell. In addition, if the base station device 20 has a beamforming capability, a cell or a service area may be formed for each beam.

[0055] The base station device 20 may be used, operated, and / or managed by various entities. For example, the base station device 20 may be a mobile network operator (MNO), a mobile virtual network operator (MVNO), a mobile virtual network enabler (MVNE), a neutral host network (NHN) operator, a broadcasting operator, an enterprise, an educational institution (a school corporation, a board of education of each local government, etc.), a real estate (building, condominium, etc.) manager, an individual, etc. Of course, the entities that use, operate, and / or manage the base station device 20 are not limited to these.

[0056] The base station device 20 may be installed and / or operated by a single business operator or by a single individual. Of course, the entity that installs and operates the base station device 20 is not limited to these. For example, the base station device 20 may be installed and operated jointly by multiple business operators or multiple individuals. Furthermore, the base station device 20 may be a shared facility used by multiple business operators or multiple individuals. In this case, the installation and / or operation of the facility may be performed by a third party different from the user.

[0057] The base station device 20 operated by a carrier is typically connected to the Internet via a core network. The base station device 20 is operated, managed, and maintained by a function called OA&M (Operation, Administration & Maintenance). The communication system 2 may include, for example, a network manager that performs integrated control of the base station devices 20 in the network.

[0058] The concept of a base station includes access points and wireless relay stations (also called relay devices). The concept of a base station includes not only structures with base station functions, but also devices installed in structures. Examples of structures are buildings such as office buildings, houses, steel towers, station facilities, airport facilities, port facilities, stadiums, etc. The concept of a structure includes not only buildings, but also non-building structures such as tunnels, bridges, dams, fences, and steel pillars, as well as equipment such as cranes, gates, and windmills. The concept of a structure includes not only land (ground in the narrow sense) or underground structures, but also water-based structures such as piers and megafloats, and underwater structures such as marine observation facilities.

[0059] The base station may be a mobile station. In this case, the base station (mobile station) may be a wireless communication device installed in a mobile body, or may be the mobile body itself. The mobile body may be a mobile body moving on land (ground in the narrow sense) (for example, a vehicle such as an automobile, a bus, a truck, a train, or a linear motor car), or a mobile body moving underground (for example, in a tunnel) (for example, a subway). Of course, the mobile body may be a mobile terminal such as a smartphone. The mobile body may be a mobile body moving on water (for example, a ship such as a passenger ship, a cargo ship, or a hovercraft), or a mobile body moving underwater (for example, a submarine such as a submarine, a submarine, or an unmanned submersible). The mobile body may be a mobile body moving within the atmosphere (for example, an aircraft such as an airplane, an airship, or a drone), or a space mobile body moving outside the atmosphere (for example, an artificial celestial body such as an artificial satellite, a spaceship, a space station, or a probe).

[0060] [Terminal Device] The terminal device 30 is a communication device equipped with a communication function. The terminal device 30 is typically a communication device such as a smartphone. The terminal device 30 may be a user terminal such as a mobile phone, a smart device (smartphone or tablet), a wearable terminal, a PDA (Personal Digital Assistant), or a personal computer. The terminal device 30 may also be a motorcycle or a mobile broadcasting vehicle equipped with a communication device such as an FPU. The terminal device 30 may be called User Equipment, User Terminal, User Station, Mobile Terminal, Mobile Station, or the like.

[0061] The terminal device 30 does not have to be used by a person. The terminal device 30 may be a sensor installed in a factory machine or building, such as a so-called MTC (Machine Type Communication). The terminal device 30 may be an M2M (Machine to Machine) device or an IoT (Internet of Things) device. The terminal device 30 may be a device equipped with a relay communication function, such as D2D (Device to Device) or V2X (Vehicle to everything). The terminal device 30 may be a device called CPE (Client Premises Equipment) used in wireless backhaul or the like. The terminal device 30 may be a wireless communication device installed in a mobile object, or may be the mobile object itself.

[0062] Furthermore, the terminal device 30 does not necessarily have to be located on the ground, but may be an object that exists in the air or space, such as an aircraft, drone, helicopter, or satellite, or an object that exists on or under the sea, such as a ship or submarine.

[0063] [Communication control device] The communication control device 40 is a device that manages the base station device 20. For example, the communication control device 40 is a device that controls wireless communication of the base station device 20. For example, the communication control device 40 determines communication parameters (also called operation parameters) used by the base station device 20 and gives permission or instructions to the base station device 20. In this case, the communication control device 40 may be a network manager that performs integrated control of wireless devices in a network. Taking ETSI EN 303 387 and IEEE 802.19.1-2014 as examples, the communication control device 40 may be a control device such as a Spectrum Manager / Coexistence Manager that performs radio interference control between wireless devices. In addition, for example, a Registered Location Secure Server (RLSS) defined in IEEE 802.11-2016 may also be the communication control device 40. In addition, in a frequency sharing environment, a database (database server, device, system) such as a Geolocation database (GLDB) or a Spectrum Access System (SAS) may also be the communication control device 40. Basically, the object of control of the communication control device 40 is the base station device 20, but the communication control device 40 may also control the terminal device 30 under its control.

[0064] A plurality of communication control devices 40 may exist in one communication system 2. FIG. 6 is a diagram showing a model in which the communication control devices 40 are distributed. In this case, a plurality of communication control devices 40 (communication control devices 40 in the example of FIG. 6) 1 and the communication control device 40 2 ) exchange information about the base station devices 20 that they manage, and perform necessary frequency allocation and calculations for interference control.

[0065] The communication control device 40 may be a master-slave type device. FIG. 7 is a diagram showing a model in which one communication control device centrally controls a plurality of communication control devices (a so-called master-slave type model). In the example of FIG. 7, the communication control device 40 3 is the master communication control device, and the communication control device 40 4 , 405 is a slave communication control device. In such a system, the master communication control device supervises multiple slave communication control devices and is capable of centralized decision making. In addition, the master communication control device can delegate or revoke decision-making authority to each slave communication control device for the purpose of load balancing or the like.

[0066] In addition, the communication control device 40 may acquire necessary information from entities other than the base station device 20, the terminal device 30, and the proxy device 50 for its role. Specifically, the communication control device 40 may acquire information necessary for protection, such as location information of the primary system, from a database (regulatory database) managed and operated by a national or regional radio regulatory agency. An example of a regulatory database is the Universal Licensing System (ULS) operated by the Federal Communications Commission. Other examples of information necessary for protection may include, for example, an out-of-band emission limit (OOBE), an adjacent channel leakage ratio (ACLR), an adjacent channel selectivity, a fading margin, and / or a protection ratio (PR). It is desirable to use these examples when the numerical values ​​are given fixedly under the legal system.

[0067] The communication control device 40 may obtain detailed specifications and usage schedule information of a radio station of the primary system (primary radio station) from the radio station specifications database and the radio station usage schedule database. The radio station specifications database into which the specifications of the primary radio station are input, and the radio station usage schedule database into which the usage schedule information is input, may be managed and operated by a broadcasting company, a public service organization, or the like, which is the operator of the primary system. The radio station specifications database and the radio station usage schedule database may be managed and operated by an operator of the communication control device, an administrative organization, a third party organization, or the like, in addition to a broadcasting company, a public service organization, or the like, which is the operator of the primary system. The primary system operator stores various information of the primary radio station before actually using the radio station. This database may be operated as one database. The various information does not necessarily need to be obtained via a database, and for example, the primary system operator may directly input the information to the communication control device 40 using an HTTP request / response or the like.

[0068] As another example, it may be assumed that the communication control device 40 acquires radio wave sensing information from a radio wave sensing system that is installed and operated for the purpose of detecting radio waves of the primary system. As a specific example, the communication control device 40 may acquire radio wave detection information of the primary system from a radio wave sensing system such as an environmental sensing capability (ESC) in the US CBRS. In addition, when a communication device or a terminal has a sensing capability, the communication control device 40 may acquire radio wave detection information of the primary system from the communication device or terminal.

[0069] Also, without performing radio wave sensing, the primary system operator may directly notify the communication control device 40 of the use of the wireless station. In this case, the primary system operator can notify the use by writing information such as the use time and location in a database such as a wireless station use schedule database. Also, it is conceivable that the primary system operator may directly input to the communication control device 40 using an HTTP request / response or the like.

[0070] [Proxy device] The proxy device 50 (proxy system) is a device that communicates with the communication control device 40 on behalf of (representing) one or more communication devices (e.g., base station device 20). The proxy device 50 is also a type of communication device. The proxy device 50 may be a DP (Domain Proxy) defined in Non-Patent Document 2 and the like. Here, a DP refers to an entity that communicates with an SAS on behalf of each of multiple CBSDs or a network composed of multiple CBSDs. Note that the proxy device 50 is not limited to the DP defined in Non-Patent Document 2 as long as it has a function of communicating with the communication control device 40 on behalf of (representing) one or more communication devices. A network manager that performs integrated control of the base station devices 20 in the network may be regarded as the proxy device 50.

[0071] The interface between each entity may be wired or wireless. For example, the interface between the communication control device and the communication device may be not only a wired line but also a wireless interface that does not depend on frequency sharing. In this case, the wireless interface may be, for example, a wireless interface provided by a mobile communication carrier via a licensed band or a wireless interface that uses an existing license-exempt band (for example, a wireless interface that uses Wi-Fi communication).

[0072] The configuration of each device constituting the communication system 2 will be specifically described below.

[0073] <2-2. Base station equipment configuration> First, the configuration of the base station device 20 will be described. FIG. 8 is a diagram showing a configuration example of the base station device 20 according to an embodiment of the present disclosure. The base station device 20 is a wireless communication device (wireless system) that wirelessly communicates with the terminal device 30 under the control of the communication control device 40. For example, the base station device 20 is a base station device (ground station device) located on the ground. In this case, the base station device 20 may be a base station device arranged in a structure on the ground, or a base station device installed in a mobile body moving on the ground. More specifically, the base station device 20 may be an antenna installed in a structure such as a building and a signal processing device connected to the antenna. Of course, the base station device 20 may be a structure or a mobile body itself. The term "ground" refers not only to land (ground in the narrow sense) but also to ground, on water, and underwater in a broad sense. The base station device 20 is a type of communication device.

[0074] The base station device 20 is not limited to a ground station device. For example, the base station device 20 may be a base station device (non-ground station device) that moves or floats in the air or space. In this case, the base station device 20 may be an aircraft station device or a satellite station device.

[0075] The aircraft station device may be a device mounted on an aircraft or the like, or may be the aircraft itself. The concept of aircraft includes not only heavier aircraft such as airplanes and gliders, but also lighter aircraft such as balloons and airships. The concept of aircraft also includes rotorcraft such as helicopters and autogyros. Note that the aircraft station device (or the aircraft on which the aircraft station device is mounted) may be a manned aircraft or an unmanned aircraft such as a drone.

[0076] The satellite station device may be a device mounted on a space vehicle such as an artificial satellite, or may be the space vehicle itself. The satellite that becomes the satellite station device may be any of a low earth orbit (LEO: Low Earth Orbiting) satellite, a medium earth orbit (MEO: Medium Earth Orbiting) satellite, a geostationary earth orbit (GEO: Geostationary Earth Orbiting) satellite, and a highly elliptical orbit (HEO: Highly Elliptical Orbiting) satellite. Of course, the satellite station device may be a device mounted on a low earth orbit satellite, a medium earth orbit satellite, a geostationary satellite, or a highly elliptical orbit satellite.

[0077] The base station device 20 may be a relay station device. The relay station device may be, for example, an aircraft station or an earth station. The relay station device may be regarded as a type of the above-mentioned relay device. The aircraft station is a radio station installed on the ground or on a moving object moving on the ground in order to communicate with the aircraft station device. The earth station is a radio station located on the earth (including in the air) in order to communicate with the satellite station device. The earth station may be a large earth station or a small earth station such as a VSAT (Very Small Aperture Terminal). The earth station may be a VSAT control earth station (also called a master station or a HUB station) or a VSAT earth station (also called a slave station). The earth station may be a radio station installed on a moving object moving on the ground. For example, an onboard earth station (ESV: Earth Stations on board Vessels) is an example of an earth station installed on a ship. The earth station may include an aircraft earth station installed on an aircraft (including a helicopter) and communicating with a satellite station. The earth station may include an aircraft earth station that is installed on a moving object moving on the ground and communicates with an aircraft earth station via a satellite station. The relay station device may be a portable, mobile radio station that communicates with a satellite station or an aircraft station.

[0078] The base station device 20 includes a wireless communication unit 21, a storage unit 22, a network communication unit 23, and a control unit 24. Note that the configuration shown in Fig. 8 is a functional configuration, and the hardware configuration may be different from this. Also, the functions of the base station device 20 may be distributed and implemented in multiple physically separated devices.

[0079] The wireless communication unit 21 is a wireless communication interface that wirelessly communicates with other communication devices (e.g., terminal device 30, communication control device 40, proxy device 50, and other base station devices 20). The wireless communication unit 21 operates under the control of the control unit 24. The wireless communication unit 21 may be compatible with multiple wireless access methods. For example, the wireless communication unit 21 may be compatible with both NR and LTE. The wireless communication unit 21 may be compatible with other cellular communication methods such as W-CDMA and cdma2000. Furthermore, the wireless communication unit 21 may be compatible with a wireless LAN communication method in addition to the cellular communication method. Of course, the wireless communication unit 21 may only be compatible with one wireless access method.

[0080] The wireless communication unit 21 includes a reception processing unit 211, a transmission processing unit 212, and an antenna 213. The wireless communication unit 21 may include a plurality of reception processing units 211, a transmission processing unit 212, and an antenna 213. When the wireless communication unit 21 supports a plurality of wireless access methods, each unit of the wireless communication unit 21 may be configured separately for each wireless access method. For example, when the base station device 20 supports NR and LTE, the reception processing unit 211 and the transmission processing unit 212 may be configured separately for NR and LTE.

[0081] The reception processing unit 211 processes an uplink signal received via the antenna 213. The reception processing unit 211 includes a radio reception unit 211a, a demultiplexing unit 211b, a demodulation unit 211c, and a decoding unit 211d.

[0082] The wireless receiver 211a performs down-conversion, removal of unnecessary frequency components, control of amplification level, orthogonal demodulation, conversion to digital signal, removal of guard interval, extraction of frequency domain signal by fast Fourier transform, etc., on the uplink signal. For example, assume that the wireless access method of the base station device 20 is a cellular communication method such as LTE. At this time, the demultiplexer 211b separates uplink channels such as PUSCH (Physical Uplink Shared Channel) and PUCCH (Physical Uplink Control Channel) and uplink reference signals from the signal output from the wireless receiver 211a. The demodulator 211c demodulates the received signal using a modulation method such as BPSK (Binary Phase Shift Keying) and QPSK (Quadrature Phase Shift Keying) for the modulation symbols of the uplink channel. The modulation method used by the demodulator 211c may be 16QAM (Quadrature Amplitude Modulation), 64QAM, or 256QAM. The decoder 211d performs a decoding process on the coded bits of the demodulated uplink channel. The decoded uplink data and uplink control information are output to the controller 24.

[0083] The transmission processing unit 212 performs a transmission process of the downlink control information and the downlink data, and includes an encoding unit 212a, a modulation unit 212b, a multiplexing unit 212c, and a radio transmission unit 212d.

[0084] The coding unit 212a codes the downlink control information and downlink data input from the control unit 24 using a coding method such as block coding, convolution coding, turbo coding, etc. The modulation unit 212b modulates the coded bits output from the coding unit 212a using a predetermined modulation method such as BPSK, QPSK, 16QAM, 64QAM, 256QAM, etc. The multiplexing unit 212c multiplexes the modulation symbols of each channel and the downlink reference signal, and places them in a predetermined resource element. The wireless transmission unit 212d performs various signal processing on the signal from the multiplexing unit 212c. For example, the wireless transmission unit 212d performs processing such as conversion to the time domain by fast Fourier transform, addition of a guard interval, generation of a baseband digital signal, conversion to an analog signal, quadrature modulation, up-conversion, removal of unnecessary frequency components, and power amplification. The signal generated by the transmission processing unit 212 is transmitted from the antenna 213.

[0085] The storage unit 22 is a data readable / writable storage device such as a DRAM, an SRAM, a flash memory, a hard disk, etc. The storage unit 22 functions as a storage means of the base station device 20. The storage unit 22 stores desired transmission power information, operation parameters, possessed resource information, and the like.

[0086] The desired transmission power information is information on transmission power that the base station device 20 requests of the communication control device 40 as information on transmission power required for transmitting radio waves.

[0087] The operating parameters are information (e.g., setting information) related to radio wave transmission operations of the base station device 20. For example, the operating parameters are information on the maximum value of transmission power (maximum allowable transmission power) permitted for the base station device 20. Of course, the operating parameters are not limited to information on the maximum allowable transmission power.

[0088] The retained resource information is information regarding the retained radio resources of the base station device 20. For example, the retained resource information is information regarding radio resources currently available for use by the base station device 20. For example, the retained resource information is information regarding the amount of interference margin retained by the base station device 20 allocated by the communication control device 40. The information regarding the amount retained may be information in units of resource blocks, which will be described later. In other words, the retained resource information may be information regarding resource blocks retained by the base station device 20 (for example, the amount of resource blocks retained).

[0089] The network communication unit 23 is a communication interface for communicating with other devices (e.g., the communication control device 40, the proxy device 50, and other base station devices 20). For example, the network communication unit 23 is a LAN (Local Area Network) interface such as a NIC (Network Interface Card). The network communication unit 23 may be a Universal Serial Bus (USB) interface configured with a USB host controller, a USB port, and the like. The network communication unit 23 may be a wired interface or a wireless interface. The network communication unit 23 functions as a network communication means of the base station device 20. The network communication unit 23 communicates with other devices according to the control of the control unit 24.

[0090] The control unit 24 is a controller that controls each unit of the base station device 20. The control unit 24 is realized by a processor such as a central processing unit (CPU) or a micro processing unit (MPU). For example, the control unit 24 is realized by a processor executing various programs stored in a storage device inside the base station device 20 using a random access memory (RAM) or the like as a working area. The control unit 24 may be realized by an integrated circuit such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA). The CPU, MPU, ASIC, and FPGA can all be considered as controllers.

[0091] As shown in FIG. 8, the control unit 24 includes an acquisition unit 241, a setting unit 242, a transmission unit 243, and a wireless communication control unit 244. Each block (acquisition unit 241 to wireless communication control unit 244) constituting the control unit 24 is a functional block indicating a function of the control unit 24. These functional blocks may be software blocks or hardware blocks. For example, each of the above-mentioned functional blocks may be a software module realized by software (including a microprogram), or may be a circuit block on a semiconductor chip (die). Of course, each functional block may be a processor or an integrated circuit. The functional blocks may be configured in any manner. The control unit 24 may be configured by functional units different from the above-mentioned functional blocks.

[0092] Each block constituting the control unit 24 (the acquisition unit 241 to the wireless communication control unit 244) may operate, for example, as follows.

[0093] For example, the transmitter 243 requests a grant and transmits information about the grant usage mode to a communication control device 40 including an acquisition unit that acquires information about the grant usage mode for a communication device that uses radio waves in the frequency band used by the first wireless system to use the radio waves, and a processing unit that performs processing related to the grant based on the information about the grant usage mode. Then, the wireless communication control unit 244 controls the wireless communication unit 21 based on the grant provided from the communication control device 40 based on the grant request.

[0094] The operations of each block (acquisition unit 241 to wireless communication control unit 244) constituting the control unit 24 will be described later.

[0095] <2-3. Terminal device configuration> Next, the configuration of the terminal device 30 will be described. Fig. 9 is a diagram showing an example of the configuration of the terminal device 30 according to an embodiment of the present disclosure. The terminal device 30 is a communication device that performs wireless communication with the base station device 20 and / or the communication control device 40. Note that in this embodiment, the concept of a communication device (or a wireless communication device) includes not only a base station device and a proxy device, but also a terminal device. The communication device (or a wireless communication device) can be rephrased as a wireless system.

[0096] The terminal device 30 includes a wireless communication unit 31, a storage unit 32, an input / output unit 33, and a control unit 34. Note that the configuration shown in Fig. 9 is a functional configuration, and the hardware configuration may be different from this. Also, the functions of the terminal device 30 may be distributed and implemented in multiple physically separated components.

[0097] The wireless communication unit 31 is a wireless communication interface that wirelessly communicates with other communication devices (e.g., the base station device 20 and other terminal devices 30). The wireless communication unit 31 operates under the control of the control unit 34. The wireless communication unit 31 supports one or more wireless access methods. For example, the wireless communication unit 31 supports both NR and LTE. The wireless communication unit 31 may also support other wireless access methods, such as W-CDMA and cdma2000.

[0098] The wireless communication unit 31 includes a reception processing unit 311, a transmission processing unit 312, and an antenna 313. The wireless communication unit 31 may include a plurality of reception processing units 311, a transmission processing unit 312, and an antenna 313. When the wireless communication unit 31 supports a plurality of wireless access methods, each unit of the wireless communication unit 31 may be configured separately for each wireless access method. For example, the reception processing unit 311 and the transmission processing unit 312 may be configured separately for LTE and NR. The configurations of the reception processing unit 311 and the transmission processing unit 312 are similar to those of the reception processing unit 211 and the transmission processing unit 212 of the base station device 20.

[0099] The storage unit 32 is a data readable / writable storage device such as a DRAM, an SRAM, a flash memory, a hard disk, etc. The storage unit 32 functions as a storage unit of the terminal device 30.

[0100] The input / output unit 33 is a user interface for exchanging information with the user. For example, the input / output unit 33 is an operation device such as a keyboard, a mouse, an operation key, or a touch panel that allows the user to perform various operations. Alternatively, the input / output unit 33 is a display device such as a liquid crystal display (LCD) or an organic electroluminescence display (OLED). The input / output unit 33 may be an audio device such as a speaker or a buzzer. The input / output unit 33 may also be a lighting device such as an LED (Light Emitting Diode) lamp. The input / output unit 33 functions as an input / output means (input means, output means, operation means, or notification means) of the terminal device 30.

[0101] The control unit 34 is a controller that controls each unit of the terminal device 30. The control unit 34 is realized by a processor such as a CPU or an MPU. For example, the control unit 34 is realized by the processor executing various programs stored in a storage device inside the terminal device 30 using a RAM or the like as a working area. The control unit 34 may be realized by an integrated circuit such as an ASIC or an FPGA. The CPU, MPU, ASIC, and FPGA can all be considered as controllers.

[0102] <2-4. Configuration of communication control device> The communication control device 40 is a device that controls wireless communication of the base station device 20. The communication control device 40 may control wireless communication of the terminal device 30 directly or via the base station device 20. The communication control device 40 may be a network manager that performs integrated control of wireless devices in a network. For example, the communication control device 40 may be a spectrum manager / coexistence manager. Furthermore, the communication control device 40 may be a database server such as a geolocation database (GLDB) or a spectrum access system (SAS).

[0103] If the communication system 2 is a cellular communication system, the communication control device 40 may be a device constituting a core network. The core network CN is, for example, an EPC (Evolved Packet Core) or a 5GC (5G Core network). If the core network is an EPC, the communication control device 40 may be, for example, a device having a function as an MME (Mobility Management Entity). If the core network is a 5GC, the communication control device 40 may be, for example, a device having a function as an AMF (Access and Mobility Management Function). Even if the communication system 2 is a cellular communication system, the communication control device 40 does not necessarily have to be a device constituting a core network. For example, the communication control device 40 may be a device having a function as an RNC (Radio Network Controller).

[0104] The communication control device 40 may have a gateway function. For example, if the core network is EPC, the communication control device 40 may be a device having a function as an S-GW (Serving Gateway) or P-GW (Packet Data Network Gateway). If the core network is 5GC, the communication control device 40 may be a device having a function as a UPF (User Plane Function). The communication control device 40 does not necessarily have to be a device that configures the core network. For example, the core network is a W-CDMA or cdma2000 core network. In this case, the communication control device 40 may be a device that functions as an RNC (Radio Network Controller).

[0105] Furthermore, the communication control device 40 may be a system that controls a plurality of secondary systems. In this case, the communication system 2 can be regarded as a system that includes a plurality of secondary systems.

[0106] Fig. 10 is a diagram showing a configuration example of a communication control device 40 according to an embodiment of the present disclosure. The communication control device 40 includes a wireless communication unit 41, a storage unit 42, a network communication unit 43, and a control unit 44. Note that the configuration shown in Fig. 10 is a functional configuration, and the hardware configuration may be different from this. In addition, the functions of the communication control device 40 may be distributed and implemented in multiple physically separated configurations. For example, the communication control device 40 may be configured by multiple server devices.

[0107] The wireless communication unit 41 is a wireless communication interface that wirelessly communicates with other communication devices (e.g., base station device 20, terminal device 30, proxy device 50, and other communication control devices 40). The wireless communication unit 41 operates under the control of the control unit 44. The wireless communication unit 31 supports one or more wireless access methods. For example, the wireless communication unit 31 supports both NR and LTE. The wireless communication unit 31 may also support other wireless access methods, such as W-CDMA and cdma2000. The configuration of the wireless communication unit 41 is similar to that of the wireless communication unit 21 of the base station device 20.

[0108] The storage unit 42 is a storage device capable of reading and writing data, such as a DRAM, an SRAM, a flash memory, or a hard disk. The storage unit 22 functions as a storage means of the base station device 20. The storage unit 22 stores operation parameters of each of the multiple base station devices 20 constituting the communication system 2. The storage unit 22 may store possessed resource information of each of the multiple base station devices 20 constituting the communication system 2. As described above, the possessed resource information is information related to the possession of radio resources by the base station device 20. The communication control device 40 may store information in a file server 60.

[0109] The network communication unit 43 is a communication interface for communicating with other devices (for example, the base station device 20, the proxy device 50, and other communication control devices 40). The network communication unit 43 may be a network interface or a device connection interface. For example, the network communication unit 43 may be a LAN (Local Area Network) interface such as a NIC (Network Interface Card). The network communication unit 43 may also be a USB interface configured with a USB (Universal Serial Bus) host controller, a USB port, and the like. The network communication unit 43 may also be a wired interface or a wireless interface. The network communication unit 43 functions as a communication means of the communication control device 40. The network communication unit 43 communicates with the base station device 20, the terminal device 30, and the proxy device 50 under the control of the control unit 44.

[0110] The control unit 44 is a controller that controls each unit of the communication control device 40. The control unit 44 is realized by a processor such as a CPU or an MPU. For example, the control unit 44 is realized by a processor executing various programs stored in a storage device inside the communication control device 40 using a RAM or the like as a working area. The control unit 44 may be realized by an integrated circuit such as an ASIC or an FPGA. The CPU, the MPU, the ASIC, and the FPGA can all be considered as controllers. For example, the control unit 44 controls operations related to grants by communicating with the base station device 20, the terminal device 30, and the proxy device 50 via the network communication unit 43.

[0111] As shown in FIG. 10, the control unit 44 includes an acquisition unit 441, a determination unit 442, a notification unit 443, and a communication control unit 444. Each block (acquisition unit 441 to communication control unit 444) constituting the control unit 44 is a functional block indicating a function of the control unit 44. These functional blocks may be software blocks or hardware blocks. For example, each of the above-mentioned functional blocks may be one software module realized by software (including a microprogram), or may be one circuit block on a semiconductor chip (die). Of course, each functional block may be one processor or one integrated circuit. The functional blocks may be configured in any manner. The control unit 44 may be configured by functional units different from the above-mentioned functional blocks.

[0112] Each block constituting the control unit 44 (acquisition unit 441 to communication control unit 444) may operate, for example, as follows.

[0113] The acquisition unit 441 is a processing unit that acquires various information, for example, in an operation related to a grant, through communication with the base station device 20, the terminal device 30, and the proxy device 50. For example, the acquisition unit 441 acquires information related to a usage mode of a grant for a second wireless system that secondarily uses a frequency band used by a first wireless system to secondarily use the frequency band.

[0114] As an example, the acquisition unit 441 acquires the position information of the terminal device 30. In addition, the acquisition unit 441 acquires area information (movement prediction range information) indicating a predicted movement area 301 to which the terminal device 30 is predicted to move.

[0115] The determination unit 442 is a processing unit that performs frequency use permission processing and area determination processing in response to a request (frequency use permission, frequency use notification, etc.) from a second wireless system that secondarily uses the frequency band used by the first wireless system, and determines whether or not the secondary use is possible (details will be described later). For example, the determination unit 442 determines whether or not the terminal device 30 can secondary use the frequency band used by the primary system (hereinafter referred to as "secondary use of the primary system") based on the area information and location information acquired by the acquisition unit 441 for the terminal device 30.

[0116] The notification unit 443 is a processing unit that notifies a response according to the determination result of the determination unit 442 in response to a request (frequency use permission, frequency use notification, etc.) from a second wireless system that secondarily uses the frequency band used by the first wireless system (details will be described later). For example, the notification unit 443 notifies the terminal device 30 of the availability of the secondary use of the primary system, as determined by the determination unit 442, as a response.

[0117] The communication control unit 444 is a processing unit that controls communication with the base station device 20, the terminal device 30, and the proxy device 50. For example, the communication control unit 444 controls the interval of frequency usage notification and the like (details will be described later).

[0118] The operation of each block (acquisition unit 441 to communication control unit 444) constituting control unit 44 will be described later.

[0119] In addition, the control unit 44 functions as a processing unit that selects one of a plurality of protection methods for the primary system, including dynamic or static protection methods, based on the usage pattern and usage location information of the radio stations of the primary system, and protects the radio stations of the primary system based on the selected protection method.

[0120] For example, when the wireless station is in planned use, the control unit 44 selects and implements one of the static protection methods, and when the wireless station is in unplanned use, the control unit 44 selects and implements one of the dynamic protection methods.

[0121] For example, the control unit 44 selects and implements point protection based on a protected point of the wireless station which is determined based on the usage location information of the wireless station, and selects and implements area protection based on a protected area of ​​the wireless station which is determined based on the usage location information of the wireless station.

[0122] In addition, the control unit 44 functions as a processing unit that predicts the protected points and protected areas when the protected points and protected areas are not included in the wireless station's usage schedule, and when the protected points and protected areas are newly set.

[0123] For example, the control unit 44 predicts the protected points and the protected areas based on the usage location information of a second wireless station that is different from the first wireless station that is the wireless station of the primary system.

[0124] For example, the control unit 44 calculates the communication quality when a signal from a first wireless station is received by a second wireless station based on the usage location information of the second wireless station, and predicts the protected points and protected areas based on the calculated communication quality.

[0125] For example, the control unit 44 predicts the protected points and the protected area based on antenna information of the antenna used by the second wireless station.

[0126] For example, the control unit 44 predicts the protected points and the protected areas based on the utilization location information of a third wireless station of a wireless system different from the primary system.

[0127] For example, the control unit 44 calculates communication quality when a signal from a third wireless station is received by a first wireless station that is a wireless station of the primary system, based on the utilization location information of the third wireless station. The control unit 44 predicts utilization location information of the third wireless station based on the calculated communication quality, and uses the predicted location information as a protected point or a protected area.

[0128] For example, the control unit 44 calculates the communication quality of a signal from a fifth wireless station, which is a wireless station of the primary system, received by the fourth wireless station, using the utilization location information of the third wireless station as utilization location information of a fourth wireless station, which is a wireless station of the primary system. The control unit 44 predicts the protected point and the protected point of the fifth wireless station based on the calculated communication quality.

[0129] For example, the control unit 44 predicts the use location information of the wireless station of the primary system based on antenna information of the antenna used by the third wireless station.

[0130] The control unit 44 also functions as a processing unit that divides the protection target area based on a certain criterion and determines a plurality of areas as dynamic protection target areas.

[0131] For example, the control unit 44 determines the dynamic protected area by dividing the protected area into a plurality of areas using parameters that are set based on the accuracy of detecting the use of wireless stations.

[0132] For example, the control unit 44 determines a dynamic protection target area by dividing the protection target area into a plurality of areas using parameters that are set based on the detection accuracy of the primary system and the position information accuracy of the primary system.

[0133] For example, the control unit 44 determines a dynamic protection target area by dividing the protection target area into a plurality of areas using parameters that are set based on fluctuations in the accuracy of position information due to the surrounding environment.

[0134] For example, the control unit 44 determines a dynamic protection target area by dividing the protection target area into a plurality of areas using parameters that are set based on the arrangement information of the detection units that detect the primary system.

[0135] For example, the control unit 44 determines dynamic protected areas of different sizes for the same area.

[0136] For example, the control unit 44 determines a dynamic protected area by dividing the protected area into a plurality of areas using parameters that are set based on the accuracy of the positioning function of the wireless stations of a wireless system different from the primary system.

[0137] For example, the control unit 44 divides the entire moving area of ​​the wireless station into a plurality of regions, and determines a protection target area to be set for the wireless station to communicate in each divided region as a dynamic protection target area.

[0138] The control unit 44 also functions as a processing unit that determines points or areas to be protected by setting antenna directions to be protected at regular intervals within the rotation range of the antenna being used in the wireless station.

[0139] For example, the control unit 44 sets the two-dimensional direction of the antenna to be protected by dividing the range of the horizontal direction in which the antenna rotates during use by a certain angle.

[0140] For example, the control unit 44 sets the three-dimensional direction of the antenna to be protected by dividing the range of the horizontal direction and the range of the tilt angle in which the antenna rotates during use by a certain angle.

[0141] For example, the control unit 44 predicts the rotation range of the antenna in use using the protected area or protected points of the wireless station with which the communication is to be performed.

[0142] For example, the control unit 44 determines the angle between two tangents drawn from the wireless station to the protection area of ​​the wireless station with which it communicates as the range of horizontal orientation within which the antenna in use can rotate.

[0143] For example, the control unit 44 projects the protection area of ​​the wireless station with which communication is to be performed onto a sphere centered on the wireless station of the primary system, and defines the area on the projected sphere as the range of horizontal orientation and tilt angle that the antenna can take during use.

[0144] For example, the control unit 44 changes the interval at which the direction of the antenna to be protected is set, depending on the computational capability of the device itself.

[0145] The control unit 44 also functions as a processing unit that selects dynamic point protection or dynamic area protection using a dynamic antenna rotation range obtained by dividing the possible antenna rotation range of the wireless station antenna according to a certain criterion.

[0146] For example, the control unit 44 sets multiple antenna directions to be protected within the dynamic antenna rotation range.

[0147] For example, the control unit 44 sets the two-dimensional dynamic antenna rotation range by dividing the range of horizontal directions of the antenna that may be used by a certain angle.

[0148] For example, the control unit 44 sets the three-dimensional dynamic antenna rotation range by dividing the horizontal orientation range and the range of tilt angles through which the antenna rotates during use by a fixed angle.

[0149] For example, the control unit 44 sets the dynamic antenna rotation range using an antenna rotation range that is likely to be used, which is predicted from information on other wireless stations that can be communication partners.

[0150] For example, the control unit 44 sets the dynamic antenna rotation range using parameters that are set based on the detection accuracy of the antenna direction when the wireless station is in use.

[0151] For example, the control unit 44 sets the dynamic antenna rotation range using parameters that are set based on the detection accuracy of the antenna direction by the detection unit that detects the antenna direction.

[0152] For example, the control unit 44 sets two or more dynamic antenna rotation ranges with different division sizes in the antenna rotation range that may be used.

[0153] <2-5. Proxy device configuration> Next, a configuration of the proxy device 50 will be described. Fig. 11 is a diagram showing a configuration example of the proxy device 50 according to an embodiment of the present disclosure. The proxy device 50 is a communication device that communicates with the base station device 20 and the communication control device 40. The proxy device 50 is a proxy system that communicates with the communication control device 40 on behalf of (representing) one or more base station devices 20. For example, the proxy device 50 is a domain proxy (DP) that represents (represents) multiple CBSDs.

[0154] The proxy system may be composed of one device or multiple devices. The communication between the proxy device 50 and the base station device 20 may be wired communication or wireless communication. Similarly, the communication between the proxy device 50 and the communication control device 40 may be wired communication or wireless communication.

[0155] Note that the communication device represented by the proxy device 50 is not limited to the base station device 20, and may be, for example, a terminal device 30. In the following description, one or more communication devices represented by the proxy device 50 (for example, one or more base station devices 20) may be referred to as subordinate communication devices (for example, subordinate base station devices 20).

[0156] The proxy device 50 includes a wireless communication unit 51, a storage unit 52, a network communication unit 53, and a control unit 54. Note that the configuration shown in Fig. 10 is a functional configuration, and the hardware configuration may be different from this. Also, the functions of the proxy device 50 may be distributed and implemented in multiple physically separated components.

[0157] The wireless communication unit 51 is a wireless communication interface that wirelessly communicates with other communication devices (e.g., a base station device 20, a terminal device 30, a communication control device 40, and another proxy device 50). The wireless communication unit 51 operates under the control of the control unit 54. The wireless communication unit 51 supports one or more wireless access methods. For example, the wireless communication unit 31 supports both NR and LTE. The wireless communication unit 51 may also support other wireless access methods, such as W-CDMA and cdma2000.

[0158] The storage unit 52 is a data readable / writable storage device such as a DRAM, an SRAM, a flash memory, a hard disk, etc. The storage unit 52 functions as a storage means of the proxy device 50. The storage unit 22 may store desired transmission power information, operation parameters, possessed resource information, etc. of each of the subordinate base station devices 20.

[0159] The network communication unit 53 is a communication interface for communicating with other devices (e.g., the base station device 20, the communication control device 40, and other proxy devices 50). For example, the network communication unit 53 is a LAN interface such as a NIC. The network communication unit 53 may be a USB interface configured with a USB host controller, a USB port, and the like. The network communication unit 53 may also be a wired interface or a wireless interface. The network communication unit 53 functions as a network communication means of the proxy device 50. The network communication unit 53 communicates with other devices according to the control of the control unit 54.

[0160] The control unit 54 is a controller that controls each unit of the proxy device 50. The control unit 54 is realized by a processor such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). For example, the control unit 54 is realized by a processor executing various programs stored in a storage device inside the proxy device 50 using a RAM (Random Access Memory) or the like as a working area. The control unit 24 may be realized by an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). The CPU, MPU, ASIC, and FPGA can all be considered as controllers.

[0161] As shown in FIG. 11, the control unit 54 includes an acquisition unit 541, a first transmission unit 542, and a second transmission unit 543. Each block (acquisition unit 541 to second transmission unit 543) constituting the control unit 54 is a functional block indicating a function of the control unit 54. These functional blocks may be software blocks or hardware blocks. For example, each of the above-mentioned functional blocks may be one software module realized by software (including a microprogram), or may be one circuit block on a semiconductor chip (die). Of course, each functional block may be one processor or one integrated circuit. The functional blocks may be configured in any manner. The control unit 54 may be configured by functional units different from the above-mentioned functional blocks.

[0162] Each block constituting the control unit 54 (the acquisition unit 541 to the second transmission unit 543) may operate, for example, as follows.

[0163] For example, the first transmission unit 542 requests a grant from the communication control device 40 on behalf of a subordinate communication device (e.g., base station device 20) and transmits information related to the usage mode of the grant. Then, the first transmission unit 542 notifies the subordinate communication device (e.g., base station device 20) of information related to the grant provided by the communication control device 40 based on the grant request. The communication control device 40 includes an acquisition unit and a processing unit. The acquisition unit acquires information related to the usage mode of the grant for a communication device that uses radio waves in a frequency band used by the first wireless system to secondary use the frequency band. The processing unit performs processing related to the grant based on the information related to the usage mode of the grant.

[0164] The operation of each block (acquisition unit 541 to second transmission unit 543) constituting the control unit 54 may be the same as the operation of each block (acquisition unit 241 to transmission unit 243) constituting the control unit 24 of the base station device 20. For example, the acquisition unit 541 may be the same as the acquisition unit 241, and the first transmission unit 542 and the second transmission unit 543 may be the same as the transmission unit 243. In the following description, the description of the acquisition unit 241 can be replaced with the acquisition unit 541, and the description of the transmission unit 243 can be replaced with the first transmission unit 542 and the second transmission unit 543.

[0165] <<3. Interference model>> Next, an interference model assumed in this embodiment will be described. Fig. 12 is an explanatory diagram showing an example of an interference model assumed in the embodiment of the present disclosure. Note that the description of the base station device 20 that appears in the following description can be replaced with a word indicating another communication device having a wireless communication function.

[0166] The interference model shown in FIG. 12 is applied, for example, when the primary system has a service area. In the example of FIG. 12, the communication system 1 (primary system) is a wireless communication system having a service area. This service area is, for example, the protection area of ​​the communication system 1. A plurality of interference calculation reference points (hereinafter referred to as protection points) are set in the protection area. The protection points are set, for example, by the operator of the communication system 1 or a public institution that manages radio waves (hereinafter referred to as the administrator). For example, the administrator may divide the protection area into a lattice shape and set the center of a predetermined lattice as a protection point. The method of determining the protection points is arbitrary. The interference margin of each protection point is set by the administrator or the like. FIG. 12 shows interference that a plurality of base station devices 20 constituting the communication system 2 (secondary system) give to the protection points. The communication control device 40 of the communication system 2 controls the transmission power of the plurality of base station devices 20 so that the cumulative interference at each protection point does not exceed the set interference margin.

[0167] Fig. 13 is an explanatory diagram showing another example of an interference model assumed in an embodiment of the present disclosure. The interference model shown in Fig. 13 is applied, for example, when the primary system performs only reception. In the example of Fig. 13, a communication system 1 (primary system) has a receiving antenna as a wireless communication device 102. The wireless communication device 102 is, for example, a receiving antenna of a satellite ground station. A communication control device 40 of a communication system 2 sets the position of the receiving antenna as a protection point, and controls the transmission power of a plurality of base station devices 20 so that the cumulative interference at that point does not exceed an interference margin.

[0168] <<4. Primary system protection method>> Next, the primary system protection method will be described. As described above, the primary system protection method can be classified into, for example, the following two types. (1) Simultaneous allocation of interference margin (2) Sequential Interference Margin Allocation Type

[0169] An example of the interference margin simultaneous allocation type primary system protection method is the method (e.g., a method for calculating the maximum allowable EIRP) disclosed in Non-Patent Document 3. An example of the interference margin sequential allocation type primary system protection method is the iterative allocation process (IAP) disclosed in Non-Patent Document 6.

[0170] The following describes a primary system protection method of "simultaneous interference margin allocation type" and a primary system protection method of "sequential interference margin allocation type". Note that the description of the base station device 20 that appears in the following description can be replaced with a word indicating another communication device having a wireless communication function.

[0171] <4-1. Interference margin simultaneous distribution type> First, the primary system protection method of the interference margin simultaneous allocation type will be described. FIG. 14 is an explanatory diagram for explaining the primary system protection method of the interference margin simultaneous allocation type. As described above, in the interference margin simultaneous allocation type, the communication control device 40 calculates the maximum allowable transmission power of the secondary system using as a reference value "a value uniquely determined by the positional relationship between the protection reference point of the primary system and the secondary system." In the example of FIG. 14, the allowable interference threshold of the primary system is I accept This threshold value may be an actual threshold value, or may be a value set with a certain margin (for example, a protection ratio) from the actual threshold value in consideration of calculation errors and interference fluctuations.

[0172] In the interference margin simultaneous allocation type primary system protection method, interference control means determining the transmission power (EIRP, conducted power + antenna gain, etc.) of the wireless devices so as not to exceed the tolerable interference threshold. In this case, if there are many base station devices 20 and each is prevented from exceeding the tolerable interference threshold, there is a risk that the interference power received in the communication system 1 (primary system) will exceed the tolerable interference threshold. Therefore, the interference margin (tolerable amount of interference) is "allocated" based on the number of base station devices 20 registered in the communication control device 40.

[0173] For example, in the example of FIG. 14, the total number of base station devices 20 is five. accept The base station device 20 is allocated an allowable interference amount of 1 / 5. Since the base station device 20 cannot recognize this allocation amount by itself, it recognizes it through the communication control device 40, or obtains the transmission power determined based on this allocation amount. Since the communication control device 40 cannot recognize the number of wireless devices managed by other communication control devices 40, it can recognize the total number by exchanging information with each other, and can allocate the allowable interference amount. For example, 1 Within 3I accept A tolerance of / 5 is assigned.

[0174] In this method, the interference margin not used by the base station device 20 can become a surplus interference margin. FIG. 15 is a diagram showing a state in which a surplus interference margin is generated. In FIG. 15, two communication control devices 40 (communication control devices 40 1 , 40 2 15 shows the total interference amount set for each of the base station devices 20 (base station devices 20) under the control of the two communication control devices 40. 1 ~20 5) to a predetermined protection point of the communication system 1. The amount of interference obtained by subtracting the amount of interference caused by the base station device 20 from the total amount of interference of each of the two communication control devices 40 is the residual interference margin. In the following description, the remaining amount of interference is referred to as the residual interference margin. The residual interference margin can be rephrased as the amount of residual interference.

[0175] <4-2. Interference margin sequential allocation type> Next, a primary system protection method of the interference margin sequential allocation type will be described. As described above, in the interference margin sequential allocation type, the communication control device 40 calculates the maximum allowable transmission power of the secondary system using the "desired transmission power of the secondary system" as a reference value. FIG. 16 is an explanatory diagram for explaining the primary system protection method of the interference margin sequential allocation type. In the interference margin sequential allocation type, for example, each of the multiple base station devices 20 stores desired transmission power information in the storage unit 22. The desired transmission power information is information on transmission power that the base station device 20 requests from the communication control device 40 as information on transmission power required for transmitting radio waves. In the example of FIG. 16, the base station devices 201 to 204 hold desired transmission power information A to D, respectively. The communication control device 40 assigns the interference amounts A to D to the base station devices 201 to 204, respectively, based on the desired transmission power information A to D.

[0176] <<5. Explanation of procedures>> Next, there will be described various procedures that may occur between entities of the communication system 2. Note that the description of the base station device 20 that appears in the following description can be replaced with a word indicating another communication device having a wireless communication function.

[0177] <5-1. Registration Procedure> The registration procedure is a procedure for registering device parameters related to the base station device 20 etc. in the communication control device 40. Typically, the registration procedure is started when the base station device 20 or one or more communication systems including multiple base station devices 20 notifies the communication control device 40 of a registration request including the device parameters. The registration request may be transmitted by a communication system acting on behalf of (representing) one or more base station devices 20 (for example, a proxy system such as the proxy device 50).

[0178] In the following description, the communication system acting on behalf of (representing) multiple base station devices 20 is assumed to be a proxy device 50, but the term proxy device 50 appearing in the following description can be replaced with a word indicating a communication system acting on behalf of (representing) other communication devices, such as a proxy system.

[0179] (Details of required parameters) The device parameters refer to, for example, the following information: Communication device specific information Location information Antenna Information Air Interface Information legal information Installer information In practice, information other than these may be treated as device parameters.

[0180] The information specific to the communication device is information capable of identifying the base station device 20, information related to the hardware of the base station device 20, etc. For example, it may include a serial number, a product model number, etc.

[0181] The information capable of identifying the base station device 20 refers to communication device user information, communication device serial number, etc. For example, the communication device user information may be a user ID, a call sign, etc. The user ID may be generated by the communication device user independently, or may be issued in advance by the communication control device 40.

[0182] The information on the hardware of the base station device 20 may include, for example, transmission power class information, manufacturer information, etc. For example, in FCC CFR Part 96, two types of classes, Category A and Category B, are defined, and the transmission power class information may include information on either of them. In addition, in 3GPP TS 36.104 and TS 38.104, several classes of eNodeB and gNodeB are defined, and these may also be used.

[0183] The information related to the software of the base station device 20 may include, for example, version information and build number related to an execution program describing processes required for interaction with the communication control device 40. It may also include version information and build number of software for operating as the base station device 20.

[0184] The location-related information is typically information that can identify the geographical position of the base station device 20. For example, it is coordinate information acquired by a positioning function represented by GPS (Global Positioning System), Beidou, QZSS (Quasi-Zenith Satellite System), Galileo, or A-GPS (Assisted Global Positioning System). Typically, it may include information related to latitude, longitude, altitude, and positioning error. Alternatively, it may be location information registered in an information management device managed by, for example, the NRA (National Regulatory Authority) or an agency entrusted by the NRA. Alternatively, it may be, for example, coordinates of the X-axis, Y-axis, and Z-axis with a specific geographical position as the origin. In addition, an identifier indicating outdoor / indoor may be assigned together with such coordinate information.

[0185] The information relating to the location may be information indicating the area in which the base station device 20 is located. For example, information determined by an administrative body, such as a postal code or an address, may be used. For example, the area may be indicated by a set of three or more geographic coordinates. The information indicating the area may be provided together with the coordinate information.

[0186] When the base station device 20 is located indoors, the location information may be provided with information indicating the floor of the building. For example, an identifier indicating the floor number, above ground / underground, etc. may be provided. In addition, information indicating a further enclosed space indoors, such as a room number and a room name, may be provided.

[0187] Typically, the positioning function is preferably provided by the base station device 20. However, depending on the performance of the positioning function and the installation location, it is not always possible to obtain position information that satisfies the required accuracy. Therefore, the positioning function may be used by an installer. In such a case, it is preferable that the position information measured by the installer is written to the base station device 20.

[0188] The antenna information is typically information indicating the performance, configuration, and the like of an antenna provided in the base station device 20. Typically, the antenna information may include, for example, information such as an antenna installation height, a tilt angle (Down tilt), a horizontal direction (Azimuth), a boresight, an antenna peak gain, and an antenna model.

[0189] The antenna information may also include information regarding possible beams that can be formed, such as beam width, beam pattern, and analog / digital beamforming capabilities.

[0190] The antenna information may also include information on the performance and configuration of MIMO (Multiple Input Multiple Output) communication. For example, information such as the number of antenna elements and the maximum number of spatial streams may be included. In addition, information on a codebook to be used and weight matrix information (unitary matrices obtained by SVD (Singular Value Decomposition), EVD (Eigen Value Decomposition), BD (Block Diagonalization), etc., ZF (Zero-Forcing) matrices, MMSE (Minimum Mean Square Error) matrices, etc.) may also be included. In addition, when a maximum likelihood detection (MLD) or the like that requires a nonlinear operation is provided, information indicating the same may be included.

[0191] The antenna information may include ZoD (Zenith of Direction, Departure). The ZoD is a type of radio wave arrival angle. The ZoD may be estimated by another base station device 20 from radio waves radiated from the antenna of the base station device 20. In this case, the base station device 20 may be a terminal device operating as a base station or an access point, a device performing D2D communication, or a moving relay base station. The ZoD may be estimated by a radio wave arrival direction estimation technique such as MUSIC (Multiple Signal Classification) or ESPRIT (Estimation of Signal Propagation via Rotation Invariance Techniques). It may be used by the communication control device 40 as measurement information.

[0192] The wireless interface information typically refers to information indicating the wireless interface technology that the base station device 20 has. For example, it includes identifier information indicating standard technologies such as technologies used in GSM (registered trademark), CDMA2000, UMTS, E-UTRA, 5GNR (5G New Radio) or further next-generation cellular systems, LTE-based derived technologies such as MultiFire and LTE-U (LTE-Unlicensed), MANs (Metropolitan Area Networks) such as WiMAX and WiMAX2+, and IEEE 802.11-based wireless LANs. In addition, the version number or release number of the technical specification that defines these may also be given. It is not necessarily a standard technology, and information indicating a proprietary wireless technology may be included.

[0193] The radio interface information may also include information on frequency bands supported by the base station device 20. For example, the information may be expressed by one or more combinations of upper limit frequencies and lower limit frequencies, one or more combinations of center frequencies and bandwidths, or one or more 3GPP Operating Band numbers.

[0194] The frequency band information supported by the base station device 20 may further include capability information of carrier aggregation (CA) and channel bonding. For example, it may include band information that can be combined. For carrier aggregation, it may also include information on bands to be used as a primary component carrier (PCC) or a secondary component carrier (SCC). It may also include the number of CCs that can be aggregated at the same time.

[0195] The frequency band information supported by the base station device 20 may also include information indicating radio wave utilization priority, such as PAL and GAA.

[0196] The radio interface information may also include modulation method information supported by the base station device 20. For example, representative examples include information indicating a primary modulation method such as FSK (Frequency Shift Keying), n-ary PSK (Phase Shift Keying) (n is 2, 4, 8, etc.), and n-ary QAM (Quadrature Amplitude Modulation) (n is 4, 16, 64, 256, etc.), and information indicating a secondary modulation method such as OFDM (Orthogonal Frequency Division Multiplexing), DFT-s-OFDM (DFT spread OFDM), and FBMC (Filter Bank Multi Carrier).

[0197] The wireless interface information may also include information about error correction codes, such as capabilities of Turbo codes, Low Density Parity Check (LDPC) codes, and Polar codes, and information about the coding rate to be applied.

[0198] As another aspect, the modulation scheme information and the information on the error correction code can also be expressed as an MCS (Modulation and Coding Scheme) index.

[0199] The radio interface information may also include information indicating functions specific to each radio technology supported by the base station device 20. For example, a representative example is TM (Transmission Mode) information defined in LTE. In addition, for specific functions having two or more modes, the radio interface information may include the above-mentioned TM. Furthermore, in the case where the base station device 20 supports a function that is not essential in the specifications even if there are no two or more modes in the technical specifications, information indicating this may also be included.

[0200] The radio interface information may also include information on the radio access technology (RAT) supported by the base station device 20. For example, the information may include information indicating orthogonal multiple access methods (OMA: Orthogonal Multiple Access) such as TDMA (Time Division Multiple Access), FDMA (Frequency Division Multiple Access), and OFDMA (Orthogonal Frequency Division Multiple Access), PDMA (Power Division Multiple Access, a representative example of which is a method realized by combining Superposition Coding (SPC) and Successive Interference Canceller (SIC)), CDMA (Code Division Multiple Access), SCMA (Sparse Code Multiple Access), IDMA (Interleaver Division Multiple Access), and SDMA (Spatial Division Multiple Access), as well as opportunistic access methods such as CSMA / CA (Carrier Sense Multiple Access / Collision Avoidance) and CSMA / CD (Carrier Sense Multiple Access / Collision Detection).

[0201] The radio interface information may also include information related to a duplex mode supported by the base station device 20. Representative examples include, for example, Frequency Division Duplex (FDD), Time Division Duplex (TDD), and Full Duplex (FD). When TDD is included as the radio interface information, TDD Frame Configuration information used / supported by the base station device 20 may be added. Information related to a duplex mode may also be included for each frequency band indicated in the frequency band information.

[0202] The radio interface information may also include information on a transmit diversity technique supported by the base station device 20. For example, space time coding (STC) may be included.

[0203] The radio interface information may also include guard band information. For example, the radio interface information may include information on the size of the guard band defined by the standard. Alternatively, the radio interface information may include information on the size of the guard band desired by the base station device 20.

[0204] The legal information typically refers to information on regulations that the base station device 20 must comply with, which are determined by the radio administrative agency or an equivalent agency of each country or region, and certification information acquired by the base station device 20. The above-mentioned regulatory information typically includes, for example, information on the upper limit of out-of-band emissions and information on the blocking characteristics of the receiver. The above-mentioned certification information typically includes, for example, type approval information (FCC ID, technical regulations conformity certificate, etc.), legal information that is the basis for obtaining certification (for example, FCC regulation number, ETSI Harmonized Standard number, etc.), and the like.

[0205] Of the legal information, numerical values ​​may be substituted by those stipulated in the standards for air interface technology. For example, instead of the upper limit information for out-of-band radiation, the upper limit for out-of-band radiation may be derived and used using the adjacent channel leakage ratio (ACLR). Also, the ACLR itself may be used as necessary. Also, adjacent channel selectivity (ACS) may be used instead of blocking characteristics. Also, these may be used in combination, or the adjacent channel interference ratio (ACIR) may be used.

[0206] The installer information may include information capable of identifying the person (installer) who installed the base station device 20, unique information linked to the installer, etc. For example, in Non-Patent Document 2, a Certified Professional Installer Registration ID (CPIR-ID) and a CPI name are disclosed as information capable of identifying the installer. In addition, a mailing / contact address, an email address, a telephone number, a public key identifier (PKI), etc. are disclosed as unique information linked to the installer. The information is not limited to these, and other information related to the installer may be included as necessary.

[0207] [Additional required parameters] In the registration procedure, depending on the embodiment, it is assumed that device parameters related to not only the base station device 20 but also the terminal device 30 are required to be registered in the communication control device 40. In such a case, the term "communication device" in the above description (Details of Required Parameters) may be replaced with "terminal device" or a term equivalent thereto. In addition, parameters specific to the "terminal device" that are not described in the above description (Details of Required Parameters) may also be treated as required parameters in the registration procedure. For example, UE (User Equipment) Category defined by 3GPP may be mentioned.

[0208] [Registration process details] 17 is a sequence diagram for explaining the registration procedure. The base station device 20 or one or more communication systems including a plurality of base station devices 20 generate a registration request message using the above device parameters (step S11) and notify the communication control device 40 (step S12). The generation and / or notification of the message may be performed by the proxy device 50.

[0209] Here, if the device parameters include installer information, this information may be used to perform processing such as tamper-proofing on the registration request. Also, a part or all of the information included in the registration request may be encrypted. Specifically, for example, a public key specific to the installer may be shared in advance between the installer and the communication control device 40, and the installer may encrypt the information using a private key. Examples of information that may be encrypted include sensitive information from a crime prevention perspective, such as location information.

[0210] As for the location information, as disclosed in Non-Patent Document 2, for example, the installer may directly write the information into the communication control device 40.

[0211] After receiving the registration request, the communication control device 40 performs registration processing of the base station device 20 (step S13) and returns a registration response according to the processing result (step S14). If there is no lack of information required for registration or if there is no abnormality, the communication control device 40 records the information in the storage unit 42 and notifies normal completion. Otherwise, the communication control device 40 notifies registration failure. If registration is completed normally, the communication control device 40 may assign an ID to each communication device and notify the ID information by enclosing it in the response. If registration fails, typically, the base station device 20 or one or more communication systems including multiple base station devices 20, or their operators (e.g., mobile communication carriers or individuals) or installers will correct the registration request, etc., and try the registration procedure until it is completed normally.

[0212] Also, only the information specific to the communication device among the device parameters may be included in the registration request, and other information may be acquired from a radio station specification database in which radio station information of the secondary system is stored. The radio station specification database may be managed and operated by a radio administrative agency, a secondary system operator, or other third party.

[0213] The registration procedure may be performed multiple times. Specifically, for example, the registration procedure may be performed again when the location information changes beyond a predetermined standard due to movement, accuracy improvement, etc. The predetermined standard is typically determined by a legal system. For example, 47 CFR Part 15 requires that a Mode II personal / portable white space device access the database again when the location information changes by 100 meters or more.

[0214] <5-2. Available Spectrum Query Procedure> The available frequency information inquiry procedure is a procedure in which the base station device 20, the proxy device 50, etc. inquires about information on available frequencies from the communication control device 40. Typically, the procedure is started when the base station device 20, the proxy device 50, etc. notifies the communication control device 40 of an inquiry request including information that can identify the base station device 20 (or a base station device 20 under the proxy device 50).

[0215] (1) Example 1 Here, the available frequency information typically refers to information indicating frequencies that can be safely used for secondary purposes without causing fatal interference to the primary system at the location of the base station device 20 (or the base station device 20 subordinate to the proxy device 50). For example, if the base station device 20 is installed in a secondary use prohibited area such as an exclusion zone in order to protect a primary system that uses a frequency channel F1, the frequency channel F1 is not notified to the base station device 20 as an available channel.

[0216] In addition, the available frequency information may include the time when the frequency channel becomes available, calculated based on the usage schedule information (usage plan) of the primary radio station obtained from the above-mentioned radio station specifications database or the radio station usage schedule database.

[0217] (2) Example 2 Furthermore, even if a frequency channel is outside a secondary use prohibited area, if it is determined that the frequency channel will cause fatal interference to the primary system, the frequency channel may not be notified as an available channel.

[0218] (3) Example 3 Furthermore, the available frequency information may include frequency channels that are not notified as available due to conditions other than the primary system protection requirement of example 2. Specifically, for example, in order to avoid possible interference between base station devices 20 in advance, a frequency channel being used by another base station device 20 existing in the vicinity of the base station device 20 (or a base station device 20 subordinate to the proxy device 50) may not be notified as an available channel.

[0219] (4) Example 4 Even in these cases (Example 2 and Example 3), it is possible to notify the same frequency as that of the primary system or nearby base station device 20 as an available channel. In such cases, the available frequency information typically includes maximum allowable transmission power information. The maximum allowable transmission power is typically expressed as equivalent isotropic radiated power (EIRP). This does not necessarily have to be limited to this, and may be provided as a combination of conducted power and antenna gain, for example. Feeder loss may also be included. Furthermore, the antenna gain may be set to an allowable peak gain for each spatial direction.

[0220] [Details of required parameters] The information capable of identifying the base station device 20 may be, for example, information specific to the communication device registered during the registration procedure or the ID information described above in (Details of the registration process).

[0221] The inquiry request may also include inquiry requirement information. The inquiry requirement information may include, for example, information indicating a frequency band for which availability is desired. It may also include, for example, transmission power information. The base station device 20 or the proxy device 50 may include transmission power information when, for example, it is desired to know only frequency information for which a desired transmission power can be used. It may also include, for example, information regarding the time for which it is desired to know whether the frequency band in question is available. It is not necessary to include the inquiry requirement information.

[0222] The inquiry request may also include a measurement report. The measurement report includes the results of measurements performed by the base station device 20 and / or the terminal device 30. For example, not only raw data but also processed information may be included. For example, standardized metrics such as RSRP (Reference Signal Received Power), RSSI (Reference Signal Strength Indicator), and RSRQ (Reference Signal Received Quality) may be used.

[0223] [Details of available frequency evaluation process] 18 is a sequence diagram for explaining an available frequency information inquiry procedure. The base station device 20 or the proxy device 50 generates an inquiry request including information capable of identifying the base station device 20 (or the base station device 20 subordinate to the proxy device 50) (step S21), and notifies the communication control device 40 (step S22).

[0224] After receiving the inquiry request, the communication control device 40 evaluates the available frequencies based on the inquiry requirement information (step S23). For example, as described in the above examples 1 to 3, the available frequencies can be evaluated taking into consideration the primary system, the secondary use prohibited area 303, and the presence of nearby base station devices 20.

[0225] As described in the above example 4, the communication control device 40 may derive the maximum allowable transmission power information. Typically, it is calculated using allowable interference power information in the primary system or its protection zone, calculation reference point information for the interference power level suffered by the primary system, registration information of the base station device 20, and a propagation loss estimation model. Specifically, as an example, it is calculated by the following formula. P MaxTx(dBm) =I Th(dBm) +PL(d) (dB) …(1)

[0226] Here, P MaxTx(dBm) is the maximum allowable transmission power, I Th(dBm) is the allowable interference power, d is the distance between the reference point and the base station device 20, and PL(d) (dB) is the propagation loss at distance d. This formula does not explicitly show the antenna gain at the transmitter and receiver, but it may be included depending on the expression method of the maximum allowable transmission power (EIRP, conducted power, etc.) and the reference point of the received power (antenna input point, antenna output point, etc.). It may also include a safety margin to compensate for fluctuations due to fading. Also, feeder loss, etc. may be taken into consideration as necessary.

[0227] Moreover, the above formula is written on the assumption that a single base station device 20 is the interference source. For example, when aggregated interference from multiple base station devices 20 must be considered at the same time, a correction value may be added. Specifically, the correction value may be determined based on the three types of interference margin methods (Fixed / Predetermined, Flexible, Flexible Minimized) disclosed in Non-Patent Document 3.

[0228] Although the above formulas are expressed using logarithms, they may be converted to antilogarithms in practice. Furthermore, all parameters expressed in logarithmic notation in this embodiment may be appropriately converted to base numbers before use.

[0229] (1) Method 1 Also, as described above in the section (Details of Required Parameters), when the transmission power information is included in the inquiry requirement information, it is possible to evaluate the available frequency by a method other than the above-mentioned method. Specifically, for example, assuming that the desired transmission power indicated by the transmission power information is used, when the estimated interference amount is below the allowable interference power in the primary system or its protection zone, the frequency channel is determined to be available and notified to the base station device 20 (or the proxy device 50).

[0230] (2) Method 2 Although an example in which the band use condition is calculated based on the other system related information has been described, the present disclosure is not limited to such an example. For example, in the case where an area / space in which the base station device 20 can use the shared band is predetermined, similar to an area of ​​a REM (Radio Environment Map), the available frequency information may be derived based only on the position related information and the height related information. Also, for example, in the case where a lookup table that associates the position and height with the available frequency information is prepared, the available frequency information may be derived based only on the position related information and the height related information.

[0231] The evaluation of available frequencies does not necessarily have to be performed after receiving an inquiry request. For example, the communication control device 40 may perform the evaluation independently without an inquiry request after the above-mentioned registration procedure is normally completed. In such a case, the communication control device 40 may create the REM or lookup table exemplified in method 2, or an information table similar thereto.

[0232] In either method, the radio wave usage priority such as PAL or GAA may also be evaluated. For example, when the registered device parameters or the inquiry requirements include information on the radio wave usage priority, it may be determined whether the frequency can be used based on the priority and notified. Also, for example, as disclosed in Non-Patent Document 2, when information (called a Cluster List in Non-Patent Document 2) on the base station device 20 that performs high priority usage (e.g., PAL) is registered in advance by the user in the communication control device 40, evaluation may be performed based on the information.

[0233] After completing the evaluation of the available frequencies, the communication control device 40 notifies the base station device 20 (or the proxy device 50) of the evaluation result (step S24). The base station device 20 may use the evaluation result received from the communication control device 40 to select desired communication parameters.

[0234] <5-3.Spectrum Grant Procedure> The frequency use permission procedure is a procedure by which the base station device 20 etc. receives secondary permission to use a frequency from the communication control device 40. Typically, after the registration procedure is successfully completed, the procedure is started when the base station device 20 or one or more communication systems including multiple base station devices 20 notifies the communication control device 40 of a frequency use permission request including information capable of identifying the base station device 20. This notification may be made by the proxy device 50. Note that "after the registration procedure is successfully completed" also means that it is not necessarily necessary to carry out the available frequency information inquiry procedure.

[0235] In this embodiment, it is assumed that at least the following two types of frequency use permission request methods can be used. Designation method Flexible Method

[0236] The designation method is a request method in which the base station device 20 designates at least the frequency band and maximum transmission power to be used as desired communication parameters, and requests the communication control device 40 for permission to operate based on the desired communication parameters. The parameters are not necessarily limited to these, and parameters specific to the wireless interface technology (such as modulation method and duplex mode) may be designated. Information indicating radio wave utilization priority such as PAL and GAA may also be included.

[0237] The flexible method is a request method in which the base station device 20 specifies only requirements related to communication parameters and requests the communication control device 40 to specify communication parameters that satisfy the requirements and allow secondary use permission. The requirements related to communication parameters may include bandwidth, desired maximum transmission power, or desired minimum transmission power. The requirements are not necessarily limited to these parameters, and parameters specific to the air interface technology (such as modulation method and duplex mode) may be specified. Specifically, for example, one or more TDD Frame Configurations may be selected in advance and notified.

[0238] Regardless of the method, a measurement report may be included. The measurement report includes the result of measurement performed by the base station device 20 and / or the terminal device 30. For example, not only raw data but also processed information may be included. For example, standardized metrics such as RSRP (Reference Signal Received Power), RSSI (Reference Signal Strength Indicator), and RSRQ (Reference Signal Received Quality) may be used.

[0239] [Details of frequency usage permission process] 19 is a sequence diagram for explaining a frequency use permission procedure. A base station device 20 or one or more communication systems including a plurality of base station devices 20 generate a frequency use permission request including information capable of identifying the base station device 20 (step S31), and notify the communication control device 40 (step S32). The generation and / or notification of the request may be performed by the proxy device 50. The frequency use permission request is acquired by, for example, the acquisition unit 441 of the communication control device 40.

[0240] After acquiring the frequency use permission request, the communication control device 40 performs frequency use permission processing based on the frequency use permission request method (step S33). For example, the communication control device 40 can perform frequency use permission processing taking into consideration the primary system, its secondary use prohibited area 303, and the presence of nearby base station device 20 by using the method described in examples 1 to 3 of <5-2. Available frequency information inquiry procedure>.

[0241] When the flexible method is used, the communication control device 40 may derive the maximum allowable transmission power information by using the method described in Example 4 of <5-2. Available Frequency Information Inquiry Procedure>. Typically, the communication control device 40 calculates the maximum allowable transmission power by using tolerable interference power information in the primary system or its protection zone, calculation reference point information for the interference power level suffered by the primary system, registration information of the base station device 20, and a propagation loss estimation model. For example, the communication control device 40 calculates the maximum allowable transmission power by the following formula (2). P MaxTx(dBm) =I Th(dBm) +PL(d) (dB) …(2)

[0242] Here, P MaxTx(dBm) is the maximum allowable transmission power, I Th(dBm) is the allowable interference power, d is the distance between the reference point and the base station device 20, and PL(d) (dB)is the propagation loss at distance d. This formula does not explicitly show the antenna gain at the transmitter and receiver, but the formula may be modified according to the method of expressing the maximum allowable transmission power (EIRP, conducted power, etc.) and the reference point of the received power (antenna input point, antenna output point, etc.). A safety margin to compensate for fluctuations due to fading may also be included. Feeder loss, etc. may also be taken into consideration as necessary.

[0243] Moreover, the above formula is written on the assumption that a single base station device 20 is the interference source. For example, when aggregated interference from multiple base station devices 20 must be considered at the same time, a correction value may be added. Specifically, the correction value may be determined based on the three types of methods (Fixed / Predetermined, Flexible, Flexible Minimized) disclosed in Non-Patent Document 3.

[0244] Various models can be used as the propagation loss estimation model. When a model is specified for each application, it is desirable to use the specified model. For example, in Non-Patent Document 6, propagation loss models such as eHATA (Extended Hata) and ITM (Irregular Terrain Model) are adopted for each application. Of course, when implementing the present invention, the propagation loss models do not need to be limited to these.

[0245] In a given application, if a model is not specified, the model may be used as necessary. As a specific example, an aggressive model such as the free space loss model may be used when estimating the interference power to other base station devices 20, and a conservative model may be used when estimating the coverage of the base station device 20.

[0246] Also, when the designation method is used, it is possible to perform frequency use permission processing using the method described in Method 1 of <5-2. Available Frequency Information Inquiry Procedure>. Specifically, for example, assuming that the desired transmission power indicated by the transmission power information is used, if the estimated interference amount is below the tolerable interference power in the primary system or its protection zone, it is determined that the use of the frequency channel is permitted, and this is notified to the base station device 20 (or the proxy device 50).

[0247] In either method, the radio wave usage priority such as PAL or GAA may also be evaluated. For example, when the registered device parameters or the inquiry requirements include information on the radio wave usage priority, it may be determined whether the frequency usage is possible based on the priority and notified. Also, for example, as disclosed in Non-Patent Document 2, when information (called a Cluber List in Non-Patent Document 2) on the base station device 20 that performs high priority usage (e.g., PAL) is registered in advance by the user in the communication control device 40, the evaluation may be performed based on the information.

[0248] The frequency use permission process does not necessarily have to be performed when a request is received. For example, the communication control device 40 may perform it independently without a frequency use permission request after the above-mentioned registration procedure is normally completed. In addition, for example, the frequency use permission determination process may be performed at regular intervals. In such a case, an information table similar to the REM or lookup table exemplified in method 2 of <5-2. Available frequency information inquiry procedure> may be created.

[0249] After completing the frequency use permission process, the communication control device 40 notifies the base station device 20 of the determination result (step S34).

[0250] <5-4. Spectrum Use Notification / Heartbeat> The frequency usage notification is a procedure in which the base station device 20, the proxy device 50, etc. notifies the communication control device 40 of the frequency usage based on the communication parameters approved for use in the frequency usage permission procedure. Typically, the procedure is started when the base station device 20 or the proxy device 50 notifies the communication control device 40 of a notification message including information that can identify the base station device 20.

[0251] It is desirable that this procedure be performed periodically until the use of the frequency is rejected by the communication control device 40. If this procedure is completed normally, the base station device 20 may start or continue radio wave transmission. For example, if the state of the grant was Granted, the success of this procedure will cause the state of the grant to transition to Authorized. Also, if the state of the grant was Authorized, the failure of this procedure will cause the state of the grant to transition to Granted or Idole.

[0252] Here, the grant is permission to transmit radio waves that the communication control device 40 (for example, SAS) gives to the base station device 20 (for example, CBSD) or the like. The grant can also be said to be permission to use radio wave resources (frequency resources). This grant is described, for example, in Non-Patent Document 2. In Non-Patent Document 2, a signaling protocol between a database (SAS) and a base station (CBSD) for frequency sharing of 3550-3700 MHz in the United States is standardized. In this standard, permission to transmit radio waves that the SAS gives to the CBSD is called a "grant." The operating parameters allowed by the grant are defined by two things: the maximum allowable equivalent isotropic radiated power (EIRP) and a frequency channel. In other words, in order to transmit radio waves using multiple frequency channels, the CBSD needs to obtain multiple grants from the SAS.

[0253] A state indicating the permission state of radio wave transmission is defined in the grant. Fig. 20 is a state transition diagram showing the permission state of radio wave transmission. In Fig. 20, the Granted state indicates a state in which the grant is held but radio wave transmission is not permitted, and the Authorized state indicates a state in which radio wave transmission is permitted based on the operating parameter values ​​defined in the grant. Transition between these two states occurs depending on the result of the Heartbeat Procedure defined in the standard.

[0254] In the following description, the frequency usage notification may be referred to as a heartbeat request, or simply as a heartbeat. The transmission interval of the heartbeat request may be referred to as a heartbeat interval. Note that the descriptions of heartbeat request and heartbeat that appear in the following description may be replaced with other descriptions indicating "a request to start or continue radio wave transmission" as appropriate. Similarly, the heartbeat interval may be replaced with other descriptions (for example, a transmission interval) indicating the transmission interval of the frequency usage notification.

[0255] 21 is a sequence diagram for explaining a frequency usage notification procedure. A base station device 20 or one or more communication systems including a plurality of base station devices 20 generate a notification message including information capable of identifying the base station device 20 (step S41), and notify the communication control device 40 (step S42). The generation and / or notification of the message may be performed by a proxy device 50.

[0256] After receiving the frequency usage notification, the communication control device 40 may determine whether the start / continuation of radio wave transmission is permitted (step S43). For example, the method of determination may be confirmation of frequency usage information of the primary system. Specifically, it is possible to determine permission or denial of the start / continuation of radio wave transmission based on a change in the frequency used by the primary system, a change in the frequency usage status of a primary system (e.g., a shipboard radar) that does not use radio waves regularly, and the like.

[0257] When the determination process is completed, the communication control device 40 notifies the base station device 20 (or the proxy device 50) of the determination result (step S44).

[0258] In this procedure, the communication control device 40 may issue a command to reconfigure communication parameters to the base station device 20 (or the proxy device 50) or the like. Typically, this command is issued in response to the frequency usage notification. For example, recommended communication parameter information may be provided.

[0259] <5-5. Supplementary information on procedures> Here, the procedures do not necessarily need to be implemented individually, as will be described below. For example, the above two different procedures may be realized by substituting a third procedure having the roles of the two different procedures. Specifically, for example, a registration request and an available frequency information inquiry request may be notified integrally. Also, for example, a frequency use permission procedure and a frequency use notification may be implemented integrally. Naturally, the combination is not limited to these, and three or more procedures may be used. Also, the above procedures may be implemented separately.

[0260] In addition, when the present embodiment is applied for the purpose of frequency sharing with existing systems, it is desirable that the procedures or equivalent procedures be appropriately selected and used based on the radio wave law related to the frequency band in the country or region in which the technology of the present embodiment is implemented. For example, when registration of communication devices is mandatory for use of a specific frequency band in a specific country or region, it is desirable to carry out the above registration procedures.

[0261] In addition, the expression "obtain information" or an equivalent expression in this embodiment does not necessarily mean to obtain information according to the above procedure. For example, although it is described that the location information of the base station device 20 is used in the available frequency evaluation process, it does not necessarily have to use the information obtained in the registration procedure, and it means that if location information is included in the available frequency inquiry procedure request, that location information may be used. In other words, it means that the parameters described in this embodiment may be included in other procedures within the scope described in this embodiment and within the scope of technical feasibility.

[0262] Furthermore, information that may be included in the response from the communication control device 40 to the base station device 20 (or the proxy device 50) or the like shown in the above procedure may be notified by push notification. As a specific example, available frequency information, recommended communication parameter information, radio wave transmission continuation refusal notification, etc. may be notified by push notification.

[0263] <5-6. Procedures for terminal equipment> Basically, the procedures described in <5-1> to <5-4> can also be used for the terminal device 30. However, unlike the base station device 20, the terminal device 30 has mobility. That is, location information is dynamically updated. Depending on the legal system, if location information changes by a certain amount or more, re-registration to the communication control device 40 may be required. Therefore, in the operation form defined by the UK Office of Communication (Ofcom) (see Non-Patent Document 4), the following two types of communication parameters are specified. Specific Operational Parameters Generic Operational Parameters

[0264] The specific operational parameters are defined in this non-patent document as "operation parameters specific to a specific slave WSD (White Space Device)." In other words, they are communication parameters calculated using device parameters of the slave WSD corresponding to the terminal device 30. A feature of the specific operational parameters is that they are calculated by a White Space Database (WSDB) using the location information of the slave WSD.

[0265] Due to these characteristics, it is assumed that the individual parameters are suitable for terminal devices 30 that have low mobility or are fixedly installed.

[0266] The generic parameters are defined in this non-patent document as "operational parameters that can be used by any slave WSD located within the coverage area of ​​a given master WSD (corresponding to the base station device 20)." A feature of the generic parameters is that they are calculated by the WSDB without using the location information of the slave WSD.

[0267] Due to these characteristics, it is assumed that the general parameters are suitable for a terminal device 30 with high mobility.

[0268] The information for the terminal device 30 may be provided by unicast / broadcast from the base station device 20. For example, a broadcast signal such as a Contact Verification Signal (CVS) defined in FCC Rules Part 15 Subpart H may be used. Alternatively, the information may be provided by a broadcast signal specific to a radio interface. Specifically, the information may be provided by a Physical Broadcast Channel (PBCH) or NR-PBCH used in LTE or 5GNR.

[0269] <5-7. Procedures that occur between communication control devices> [Information exchange] The communication control device 40 can exchange management information with other communication control devices 40. FIG. 22 is a sequence diagram for explaining a procedure for exchanging management information. In the example of FIG. 22, the communication control device 40 1 and the communication control device 40 2 The communication control device exchanging management information (step S51). Of course, the communication control device exchanging information is the communication control device 40. 1 and the communication control device 40 2 These are not limited to these two.

[0270] In the management information exchange procedure, it is desirable for at least the following information to be exchanged: Communication device registration information Communication device communication parameter information Area information

[0271] The communication device registration information typically refers to device parameters of the base station device 20 that are registered in the communication control device 40 in the above registration procedure. It is not necessary to exchange all registered information. For example, information that may be personal information does not necessarily need to be exchanged. In addition, when exchanging the communication device registration information, encrypted or obfuscated information may be exchanged. For example, information converted into a binary value or information signed using a digital signature mechanism may be exchanged.

[0272] The communication device communication parameter information typically refers to information related to communication parameters currently being used by the base station device 20. It is desirable to include at least information indicating the frequency to be used and the transmission power. Other communication parameters may also be included.

[0273] Area information is typically information that indicates a specific geographical area, and may include area information with various attributes in various forms.

[0274] For example, protection area information of the base station device 20 that is a high-priority secondary system may be included, such as PPA (PAL Protection Area) disclosed in Non-Patent Document 5. In this case, the area information may be expressed, for example, by a set of three or more geographical coordinates. Also, for example, when multiple communication control devices 40 can refer to a common external database, the area information may be expressed by an ID indicating the information.

[0275] Also, for example, information indicating the coverage of the base station device 20 may be included. In this case, the area information may also be expressed, for example, as a set of three or more geographical location coordinates. Also, for example, it may be expressed as information indicating the radius size of a circle with the geographical location of the base station device 20 as its origin. Also, for example, when multiple communication control devices 40 can refer to a common external database, it may be expressed by an ID indicating the information.

[0276] As another aspect, information related to an area section predetermined by the government or the like may also be included. Specifically, for example, a certain area can be indicated by indicating an address. For example, license areas and the like can also be expressed in a similar manner.

[0277] As another embodiment, the area information does not necessarily have to represent a planar area, but may represent a three-dimensional space. For example, it may be represented using a spatial coordinate system. Also, information indicating a predetermined closed space, such as the number of floors in a building, a floor number, or a room number, may be used.

[0278] This information can be exchanged in a variety of ways, some examples of which are listed below: ID specification method Period specification method Area specification method Dump Method

[0279] The ID designation method is a method of acquiring information corresponding to an ID that is assigned in advance to identify information managed by the communication control device 40. For example, assume that the communication control device 401 manages a base station device 20 with ID:AAA. In this case, the communication control device 402 issues an information acquisition request to the communication control device 401 by designating ID:AAA. After receiving the request, the communication control device 401 searches for information with ID:AAA and notifies the registration information and communication parameter information of the corresponding base station device 20 in a response.

[0280] The period designation method is a method in which a specific period is designated, and information that satisfies a predetermined condition during that period is exchanged.

[0281] The predetermined condition may be, for example, whether or not information has been updated. For example, when acquisition of communication device information for a specific period is specified in a request, the registration information of a base station device 20 that has been newly registered during the period and the registration information and communication parameter information of a base station device 20 whose communication parameters have been changed may be notified in a response.

[0282] An example of the predetermined condition is whether the communication control device 40 has recorded it. For example, when acquisition of communication device information for a specific period is specified in a request, the registration information and communication parameter information of the base station device 20 recorded by the communication control device 40 during that period may be notified in a response. Furthermore, the latest information for that period may be notified. Alternatively, an update history for each piece of information may be notified.

[0283] In the area designation method, a specific area is designated, and information belonging to the area is exchanged. For example, when the acquisition of communication device information in a specific area is designated in a request, the registration information and communication parameter information of the base station device 20 installed in the area may be notified in a response.

[0284] The dump method is a method for providing all information recorded by the communication control device 40. It is desirable that at least the information related to the base station device 20 and the area information be provided by the dump method.

[0285] The above explanation of information exchange between communication control devices 40 is based on the pull method. That is, the response is information corresponding to parameters specified in a request, and as an example, this can be realized by the HTTP GET method. However, this is not limited to the pull method, and information may be actively provided to other communication control devices 40 by the push method. As an example, the push method can be realized by the HTTP POST method.

[0286] [Order / Request Procedures] The communication control devices 40 may execute commands and / or requests to each other. Specifically, as an example, reconfiguration of communication parameters of the base station device 20 may be performed. For example, the communication control devices 40 1 The base station device 20 managed by 1 However, the communication control device 40 2 The base station device 20 managed by 4 When it is determined that a large amount of interference is being received from the communication control device 40 1 The communication control device 40 2 In response to this, the base station device 20 4 The user may request a change to the communication parameters.

[0287] Another example is reconfiguration of area information. For example, the communication control device 40 2 The base station device 20 managed by 4If there is an error in the calculation of coverage information or protection area information related to the communication control device 40 1 The communication control device 40 2 In addition, a request to reconstruct the area information may be made for various other reasons.

[0288] <<6. Primary system protection>> Next, primary system protection according to an embodiment of the present disclosure will be described. In the following, an FPU operated by a broadcasting company in Japan will be described as an example, but primary system protection according to an embodiment of the present disclosure is not limited to an FPU.

[0289] For example, public service radio systems in the 2.3 GHz band, satellite mobile communications services and broadband mobile radio access systems in the 2.6 GHz band, 5 GHz band radio access systems, DSRC (Dedicated Short Range Communications), amateur radio, 5.8 GHz band image transmission systems, FPUs using microwave bands around 5 to 7 GHz, STL (Studio to Transmitter Link) / TTL (Transmitter to Transmitter Link) / TSL (Transmitter to Studio Link) used for video transmission, 6 GHz band fixed radio systems for telecommunications services, mobile satellite uplinks (C band), 26 GHz band FWA (Fixed Wireless Access), airport surface detection radar, 25 GHz band low power data communications systems, satellite uplinks (Ka band), image transmission using the 40 GHz band (public services), public service and general service radio systems using the 40 GHz band, and FPUs using the 40 GHz band may also be subject to primary system protection.

[0290] <6-1. Assumed protection model for primary system> In the description of the FPU, the wireless station that transmits the video is called the FPU transmitting station, and the wireless station that receives the video is called the FPU receiving station. In the current FPU, only the FPU receiving station needs to be protected from the secondary system, but in the FPU advanced method currently being considered for introduction, a control signal is transmitted from the FPU receiving station to the transmitting station. For this reason, the FPU transmitting station also needs to be protected from the secondary system. In the embodiment of the present disclosure, the description will be given including the protection of the FPU transmitting station.

[0291] As usage models of the FPU according to the embodiment, the following six operation models disclosed in Non-Patent Document 7 are assumed. Of course, the usage models of the FPU are not limited to these six. Model 1: Transmission from relay vehicle to receiving base station, propagation distance up to 50 km (fixed relay) Model 2: Transmission from relay van to receiving base station, propagation distance up to 10 km (mobile relay) Model 3: Transmission from the relay vehicle to the receiving base station over a short distance in an urban area, with a propagation distance of approximately 3 km (mobile relay) Model 4: Transmission from a relay van to a helicopter over a propagation distance of approximately 2 km (mobile relay) Model 5: Transmission to the nearest broadcast vehicle up to 1 km away while carrying equipment on one's back (mobile broadcast) Model 6: Transmission from a motorcycle to a relay vehicle, propagation distance up to 1 km (mobile relay)

[0292] In all of the above models, the FPU transmitting / receiving station may be installed temporarily when in use. Therefore, the location information of the FPU transmitting / receiving station may change each time it is used. Note that models 1 to 3 may also include FPU receiving stations that are permanently installed on buildings or on top of mountains. Hereafter, the former will be called mobile stations and the latter fixed stations.

[0293] In addition, there are two usage patterns for each FPU usage model assumed here: planned use at a predetermined place and time, and unplanned use. The former corresponds to use in information programs and sports broadcasts in Models 1 to 6, and the specific usage location and usage time of the radio station applied for in advance by the broadcaster can be used for interference calculations. On the other hand, the latter is assumed in Models 1 to 5, and the specific usage location and usage time are not known until immediately before use, so the specific usage schedule cannot be used for primary system protection.

[0294] Of the above usage models, unplanned use in news programs and the like is assumed mainly in models 1 to 5. Planned use is assumed in all models 1 to 6.

[0295] Table 1 below shows examples of location information for each usage model and usage form. Naturally, the information provided varies depending on the primary system and its operator, so it is not limited to the information shown in Table 1 below.

[0296] [Table 1]

[0297] One of the differences between FPU and the primary system that has been assumed in the past for CBRS, TVWS, etc. is that since wireless stations can move, the usage location can be a point or an area for each usage model. Furthermore, there are two usage forms, and the information shown as the usage location during unscheduled usage is merely a candidate area. In an embodiment of the present disclosure, information provided by the primary system is analyzed, and the primary system protection method is switched depending on the usage model and usage form.

[0298] Another feature is that the antenna of the communicating radio station can move in response to the movement of the radio station. For example, in the planned use of models 2 to 6, the receiving station antenna may rotate to follow the movement of the transmitting station, so the entire rotation range must be protected. Also, in the unplanned use of models 1 to 5, if a transmitting station detects that it is being used within a candidate area, the receiving station antenna may be pointed in that direction, so it must be protected so that it can point anywhere within its rotation range.

[0299] <6-2. Information about primary radio station> The detailed specifications and usage schedule information of the primary radio station required to implement primary system protection utilize information entered into a radio station specifications database and a radio station usage schedule database, or information entered into the communication control device 40 via an HTTP request / response, etc.

[0300] <6-2-1. Detailed specifications of primary radio station> Detailed specifications of the primary wireless station used in the interference calculation may include, for example, the information listed below. - Information that can identify radio stations ·Wireless station user information Radio station hardware information Antenna information Radio interface information ·Location information ·Legal information

[0301] The information capable of identifying an individual wireless station may include a serial number, a product model number, a manufacturing number, manufacturer information, and the like.

[0302] The radio station user information may include a user ID and a call sign of the primary system. The user ID may be generated by the radio station user or may be issued in advance by the communication control device 40. In the case of an FPU, the radio station user is the broadcasting company that operates the FPU.

[0303] Radio station hardware information may include installation information for the primary radio station. FPU radio stations may include fixed receiving stations permanently installed on buildings or mountains, fixed receiving stations installed only during events, mobile transmitting / receiving stations mounted on broadcasting vans, portable transmitting stations that can be carried on people's backs, and transmitting stations installed on small vehicles such as motorcycles. For this reason, it is desirable to include information that can distinguish between these in the installation information. For example, an identifier to distinguish between transmitting and receiving stations and an identifier indicating whether they can be moved are conceivable.

[0304] Antenna information is typically information indicating the performance, configuration, etc. of an antenna provided in a communication device. Typically, information such as antenna installation height, tilt angle (Down tilt), horizontal direction (Azimuth), elevation angle (Elevation), boresight, antenna peak gain, and antenna model may be included.

[0305] In the case of an FPU, since the antenna installation height, tilt angle (Down tilt), horizontal direction (Azimuth), elevation angle (Elevation), boresight, etc. may change during use, this information may be given as a range of values.

[0306] Typically, the radio interface information is information that indicates the radio interface technology that the communication device is equipped with. In the case of FPU, it is desirable to include the compliance status of the radio station with the ARIB standard. For example, the compatibility status with the advanced FPU system, subframe length, modulation method, spatial multiplexing method, occupied frequency bandwidth (full mode, half mode), error correction code, antenna power, etc.

[0307] The location information is typically information that can identify the geographic location of the primary wireless station. This coordinate information may include information related to latitude, longitude, altitude, and positioning error. Alternatively, it may be, for example, coordinates of the X-axis, Y-axis, and Z-axis with a specific geographic location as the origin.

[0308] The location information may be input by the user of the primary wireless station to the database or the communication control device 40. The input location information is preferably coordinate information acquired by the user of the primary wireless station using a location measurement function. In addition, the location information may be information acquired by a location measurement function installed in the primary wireless station itself and input from the primary wireless station.

[0309] In addition, if location information does not exist, such as when a primary wireless station is installed only when it is in use, it does not necessarily have to be included in the detailed specifications. In this case, it is preferable that location information is included in the usage schedule information of the primary wireless station. In the case of a fixed wireless station, location information may be included in the detailed specifications.

[0310] The legal information typically refers to information on regulations that communication devices must comply with, which are determined by radio regulatory agencies or equivalent agencies in each country or region, and certification information that communication devices have obtained. The regulatory information typically includes, for example, information on the upper limit of out-of-band emissions and information on the blocking characteristics of receivers. The certification information typically includes, for example, type approval information (FCC ID, technical regulations conformity certificate, etc.), and legal information that is the basis for obtaining certification (for example, FCC regulation number, ETSI Harmonized Standard number, etc.).

[0311] <6-2-2. Planned Use Information> As the planned usage information used for primary system protection, two types of information are assumed: planned information for planned usage and advance information for unplanned usage, depending on the usage pattern of the primary system.

[0312] It is desirable for the planned information for planned use and advance information for unplanned use to include the following elements: - Information that can identify radio stations ·Wireless station user information -Identifier of the communicating radio station -Intended use identification information ·Usage type information ·Usage time ·Used location information Antenna information when in use

[0313] The information capable of identifying a wireless station and the wireless station user information may include information similar to the detailed specifications of the wireless station.

[0314] The identifier of the communication partner is information for identifying the wireless station of the other party when the wireless station to be communicated with is determined in advance in the usage schedule. It is mainly input in advance by the primary system user into the database or the communication control device 40 according to the planned usage schedule of the wireless station. It may include a serial number, product model number, manufacturing number, manufacturer information, etc., which can identify an individual wireless station.

[0315] The planned use identification information may be an ID that can identify the planned use, etc. This ID may be generated by the wireless station user or may be issued in advance by the communication control device 40.

[0316] The usage pattern information may include information for distinguishing whether the usage pattern is planned usage or unplanned usage.

[0317] The usage time is information for specifying the time when the primary radio station is planned to be used, and can only be included in the planned usage schedule information. The time when the primary system user wants to use the radio station is mainly input in advance into a database or a communication control device. Typically, it is composed of a pair of usage start time and usage end time. The pair of times included in the same usage schedule does not necessarily have to be one, and can include multiple time periods. In addition, the dates of multiple time periods included in the same usage schedule can be different from each other. In addition, it can include not only start time and end time, but also schedules that are repeated by date, hour, minute, second, etc.

[0318] The usage location information is information for identifying the geographical location where the primary wireless station is used. The information is mainly input in advance by the primary system user into the database or the communication control device 40, such as information on points or areas where the wireless station is located during planned use, or information on points or areas where the wireless station may be located during unplanned use.

[0319] In the case of FPU, the location of the mobile station changes for each usage plan, so location information is required for each usage plan. Also, depending on the FPU operation model, the wireless station may be used while moving, so the area may be entered as usage location information.

[0320] In addition, since mobile stations mounted on relay vans, motorcycles, people, helicopters, etc. move during transmission, it is desirable to input an area as the usage location information. For example, the area may be indicated by a set of three or more geographic coordinates.

[0321] Furthermore, when the primary wireless station is mounted on an object that moves through the air, such as a helicopter, a three-dimensional space may be specified as the location information to be used.

[0322] Furthermore, the utilization location information may be a set of three or more geographic coordinates representing a DPA (Dynamic Protection Area) as described in Non-Patent Document 6, or a set of geographic points representing candidate utilization locations.

[0323] Furthermore, when the utilization location information including the DPA is recorded in a database outside the communication control device 40, it can be expressed by an ID indicating the information.

[0324] The communication control device 40 implements primary system protection based on point and area information included in the utilization location information.

[0325] The in-use antenna information is information for specifying the antenna specifications of the primary radio station during planned use and the antenna specifications expected in the case of unplanned use. The primary system user mainly inputs the antenna installation height, tilt angle (Down tilt), horizontal direction (Azimuth), elevation angle (Elevation), boresight, etc., into the database or communication control device 40 in advance.

[0326] For FPUs, the antenna installation height, tilt angle (Down tilt), horizontal direction (Azimuth), elevation angle (Elevation), aim (Boresight), etc. are set for each planned use, or since the antenna installation height, tilt angle (Down tilt), horizontal direction (Azimuth), elevation angle (Elevation), aim (Boresight), etc. change during use, this information is sometimes given as a range of values.

[0327] Furthermore, when the antenna information is stored in a database outside the communication control device 40, it can be expressed by an ID indicating the information.

[0328] The communication control device 40 implements primary system protection based on this in-use antenna information.

[0329] <6-2-3. Differences in usage schedule information between planned and unplanned use> As described in (6-2-2. Usage Plan Information), the accuracy of information that can be used for cumulative interference power evaluation differs between usage plan information for planned use and unplanned use.

[0330] Planned use information is input in advance by primary radio station users such as broadcasting companies. This information includes accurate information such as the time of use, the location and area where the primary radio station will be used, and the antenna information at the time of use. In this way, since the accumulated interference power can be evaluated using accurate planned use information registered in advance, there is no need to take a large margin for the location and area to be protected and the protected antenna information, etc., and as a result, the opportunities for using secondary radio stations can be increased.

[0331] On the other hand, the usage schedule information for unscheduled usage does not specify the usage time in advance, and does not provide accurate usage location information. Only the points and areas where usage may occur, antenna information, etc. are indicated, and accurate usage schedule information cannot be used in advance. When evaluating the cumulative interference power, a margin must be provided for the points and areas to be protected and the protected antenna information, etc. For this reason, the usage opportunities for secondary wireless stations may decrease compared to the case of planned usage.

[0332] The usage schedule information for unscheduled usage is provided to reliably protect the primary radio station by a cumulative interference power evaluation with a margin even in cases where the time between notification of the exact usage location, etc. of the primary radio station and the primary radio station actually being used is short and a cumulative interference power evaluation cannot be completed using accurate information.

[0333] <6-3. Primary system protection> Primary system protection according to the embodiment of the present disclosure is implemented by the communication control device 40 in accordance with the procedure shown in Fig. 23. Fig. 23 is a flowchart showing the procedure of primary system protection.

[0334] First, the communication control device 40 acquires the usage schedule information inputted into the database or the communication control device by the operator of the primary system (step S61), and checks whether there is usage schedule information to be evaluated (step S62).

[0335] The communication control device 40 performs processing related to primary system protection when the acquired usage schedule information includes a new usage schedule or an existing usage schedule has been updated. Whether an existing usage schedule has been updated can be determined by, for example, comparing the information with a usage schedule having the same ID as the previously acquired usage schedule.

[0336] When it is determined that there is usage schedule information to be evaluated (step S62; Yes), the communication control device 40 selects a primary system protection method using the usage schedule information (step S63). In addition, an algorithm to be used for primary system protection may be selected.

[0337] The communication control device 40 implements primary system protection using the primary system protection method selected in step S63 (step S64), and stores the result in a database or the like (step S65).

[0338] In selecting and implementing the primary system protection method, the various information contained in the usage schedule may be used as is, or the usage schedule information of the relevant wireless station may be predicted using the usage schedule information of other wireless stations, and the predicted information may then be used.

[0339] Next, the communication control device 40 determines whether or not the utilization is planned (step S66).

[0340] When it is determined that the use is planned (step S66; Yes), the communication control device 40 sets the scheduler to the designated scheduled use time (step S67). This enables the communication control device 40 to determine when to start using the primary system.

[0341] Next, the communication control device 40 judges whether or not there is any unevaluated scheduled information (step S68). If the communication control device 40 judges that there is any unevaluated scheduled information (step S68; Yes), the process returns to the procedure of step S62. On the other hand, if the communication control device 40 judges that there is no unevaluated scheduled information (step S68; No), the process shown in FIG. 23 ends.

[0342] In the above step S62, if it is determined that there is no use schedule information to be evaluated (step S62; No), the communication control device 40 ends the procedure shown in FIG.

[0343] Finally, the communication control device 40 stores the result of the primary system protection in a database, etc. This information is read when the primary system starts to be used, and can include information on secondary wireless stations that are required to stop transmitting radio waves or change parameters.

[0344] It is not necessary to perform the primary system protection for all wireless stations individually, but wireless stations with short transmission distances may be considered as the same wireless station, or two or more adjacent wireless stations may be considered as one wireless station. Furthermore, if wireless stations with the same parameters exist, the evaluation results may be reused.

[0345] <6-3-1. Point protection and area protection> Primary system protection is broadly divided into point protection and area protection depending on the object of protection.

[0346] In point protection, the location where the wireless station is installed is the target of protection. In CBRS, as disclosed in Non-Patent Document [6], the target of point protection is Fixed Satellite Service (FSS) and the like.

[0347] Point protection algorithms used in CBRS include the Iterative Allocation Process (IAP), which allocates the interference margin for the primary wireless station to the secondary wireless stations, and a method for creating a list of secondary wireless stations that need to be stopped by calculating the cumulative interference power from secondary wireless stations. Of course, other point protection algorithms may also be used.

[0348] The latter technique is used to keep out-of-band interference in the FSS within a preset range. This list is called the Purge List, and secondary radio stations included in it are prohibited from communicating on the corresponding channels.

[0349] A similar algorithm may also be used when a wireless station is given one or more points at which it may be used. When the use of a primary wireless station is detected or the use of a primary wireless station is notified by a pre-configured scheduler, a frequency usage notification may be sent to request the secondary wireless station to stop transmitting radio waves or change parameters. The embodiment of the present disclosure distinguishes this type of point protection as dynamic point protection.

[0350] Area protection covers the entire coverage of fixed wireless stations and the entire range in which wireless stations may exist. As disclosed in non-patent document [6], the coverage of Grandfather Wireless Broadband License (GWBL) and Primary Access License (PAL) and areas where Federal Incumbent ship-based radars may move are covered by area protection.

[0351] Within the area to be protected, multiple interference calculation reference points (hereafter referred to as protection points) are set, and these protection points must be protected from secondary systems. The method for setting the protection points is arbitrary, but for example, the protected area may be divided into a grid and the center of a specific grid may be set as the protection point. In CBRS, all grid intersections every 2 arc seconds in latitude and longitude are set as protection points.

[0352] In CBRS, when protecting a protection point, the stop list of IAPs and secondary wireless stations is calculated in the same way as in point protection, but the area protection algorithm used in the present invention is not limited to this.

[0353] Additionally, areas into which Federal Incumbent may move are defined as Dynamic Protection Areas (DPAs) in CBRS. DPAs are regions in which Federal Incumbent use is expected to be divided into multiple regions. Within each DPA, multiple protection points are set up just like in normal protected areas, and a list of wireless stations that need to be stopped (Move List) is created by calculating the cumulative interference from secondary wireless stations to all protection points within each DPA. When the Environmental Sensing Capability (ESC) sensor detects the use of a primary wireless station within a DPA, or when a pre-set scheduler notifies the use of a primary wireless station, a frequency usage notification is sent to request secondary wireless stations included in the Move List to stop transmitting.

[0354] In addition, CBRS DPA requires that the use of the primary system ensures anonymity of sensor location information.

[0355] Furthermore, although DPA in CBRS is used only when creating a Move List, it is also possible to use DPA to perform IAP and instruct secondary wireless stations to change parameters.

[0356] The present invention distinguishes area protection using DPA as dynamic area protection.

[0357] As another primary system protection, a simple inside / outside determination such as an Exclusion Zone in CBRS may be performed.

[0358] These primary system protections are executed periodically at arbitrary intervals using the usage schedule information. The results are stored in a database, etc., and when the scheduler, sensor, database, etc. detects the actual usage of the primary wireless station, this information is notified to the secondary wireless station by the frequency usage permission process or frequency usage notification.

[0359] The interval at which primary system protection is performed may be determined independently by the communications control device, or may be determined by the user of the primary system, the radio regulatory agency of each country or region, or an equivalent agency.

[0360] Furthermore, when performing primary system protection, if it is determined that the calculation cannot be completed in time for the scheduled usage time entered in the usage schedule information for planned usage, it is not necessarily necessary to perform interference calculation, and the primary radio station may be protected by using the results of the primary system protection processing performed using the usage schedule information for unplanned usage.

[0361] <6-3-2. Procedure for selecting the primary system protection method> In CBRS, the primary system protection method is determined by standards and legislation for each primary system: FSS is point protection, GWBL and PAL are area protection, and military equipment such as shipboard radar is area protection using DPA.

[0362] On the other hand, in a primary system involving wireless station mobility as envisioned in Japan, the communication control device 40 itself must be able to switch between two methods: a method in which point / area protection such as CBRS's FSS, GWBL, and PAL is implemented by a scheduler, and a method in which dynamic protection point / areas such as DPA are set and the relevant points or areas are protected when use is detected by a sensor or the like.

[0363] CBRS does not assume such a primary system, and therefore the communication control device 40 cannot autonomously determine and switch to a primary system protection method.

[0364] In an embodiment of the present disclosure, wireless station usage schedule information is obtained from the primary system side, and the communication control device 40 determines the information contained therein, thereby autonomously determining the primary system protection method.

[0365] Specifically, the communication control device 40 (control unit 44) selects the primary system protection method based on the usage mode and usage location information of the wireless station provided by the primary system. Note that other usage schedule information may also be used.

[0366] Even when there are multiple uses of radio stations of the same primary system or multiple plans to use the same radio station, primary system protection such as cumulative interference power evaluation can be performed.

[0367] Fig. 24 shows an example of a flow of switching (selection) of the primary system protection method by the communication control device 40. Fig. 24 is a flowchart showing an example of a procedure of switching (selection) of the primary system protection method. The flow shown in Fig. 24 is executed by the control unit 44 of the communication control device 40.

[0368] In the example shown in FIG. 24, the control unit 44 selects one of a plurality of protection methods for the primary system, including dynamic and static protection methods, based on the usage mode and usage location information of the primary wireless station, and performs protection of the primary wireless station based on the selected protection method.

[0369] In addition, in the example shown in FIG. 24, when the wireless station is in planned use, the control unit 44 selects and implements one of the static protection methods, and when the wireless station is in unplanned use, the control unit 44 selects and implements one of the dynamic protection methods.

[0370] In addition, in the example shown in Figure 24, the control unit 44 selects and implements point protection based on a protected point of the wireless station which is determined based on the utilization location information of the wireless station, and selects and implements area protection based on a protected area of ​​the wireless station which is determined based on the utilization location information of the wireless station.

[0371] First, the communication control device 40 determines whether the usage mode is planned usage or unscheduled usage (step S71).

[0372] When the communication control device 40 determines that the usage mode is planned usage (step S71; planned usage), it determines whether the usage position information includes either information on a point to be used or information on an area to be used (step S72).

[0373] When it is determined that the utilization location information includes information on utilized points (step S72; utilized points), the communication control device 40 implements point protection for the points (step S73) and ends the procedure shown in FIG.

[0374] On the other hand, if the communication control device 40 determines that the utilization location information includes information on the area to be utilized (step S72; utilization area), it implements area protection for this area (step S74) and ends the procedure shown in FIG. 24.

[0375] In the case of FPU, examples of radio stations subject to point protection include FPU transmitting / receiving stations of Model 1 and receiving stations of Models 2, 3, 4, and 6. On the other hand, examples of radio stations subject to area protection include FPU transmitting stations of Models 2 to 6 and receiving stations of Model 4.

[0376] At the time of this selection, the location information of the relevant wireless station may be predicted using location information of other wireless stations, and after selecting the primary system protection method using that information, point protection or area protection may be implemented.

[0377] Furthermore, when the communication control device 40 determines that the usage mode is unscheduled usage (step S71; unscheduled usage), it determines whether the usage location information includes either information on a usage candidate point or information on a usage candidate area (step S75). A usage candidate point is given to the usage location information as a point that may be used. A usage candidate area is given to the usage location information as an area that may be used, such as a DPA.

[0378] When the communication control device 40 determines that the utilization location information includes information on a utilization candidate point (step S75; utilization candidate point), it implements dynamic point protection for this point (step S76) and ends the procedure shown in FIG. 24.

[0379] On the other hand, if the communication control device 40 determines that the usage location information includes information on multiple candidate usage areas such as DPA (step S75; candidate usage areas), it implements dynamic area protection for this area (step 77) and terminates the procedure shown in Figure 24.

[0380] At the time of this selection, the communication control device may predict points that may be used by the wireless station in question or potential use areas such as DPAs using information on the usage locations of other wireless stations, and after selecting the primary system protection method using this information, dynamic point protection or dynamic area protection may be implemented.

[0381] <6-3-3. Supplementary information on usage patterns and location information> The communication control device 40 may implement both static protection and dynamic protection based on the usage pattern. For example, in the case of a usage pattern in which planned usage and unplanned usage are switched while the primary wireless station is in use, the communication control device 40 may perform calculations for both static protection and dynamic protection in advance, and switch between static protection and dynamic protection while the primary wireless station is in use. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that switches between the static protection method and the dynamic protection method when the usage pattern is switched between planned usage and unplanned usage.

[0382] Furthermore, the communication control device 40 may implement both point protection and area protection based on the utilization location information. For example, in the case of utilization location information in which fixed utilization and mobile utilization are switched during utilization of the primary wireless station, the communication control device 40 may perform calculations in both area protection and point protection in advance, and switch between area protection and point protection during utilization of the primary wireless station. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that switches between point protection and area protection when utilization location information is switched between fixed utilization and mobile utilization.

[0383] Furthermore, the communication control device 40 does not necessarily have to switch between point protection and area protection, or between dynamic point protection and dynamic area protection, based only on whether the location information of the primary wireless station is a point or an area. For example, when the accuracy of the location information of the primary wireless station itself or the accuracy of the interference power from secondary wireless stations predicted from the location information is low, the protected points of the primary wireless station may be expanded to the protected area and the primary wireless station may be protected more reliably by switching from point protection to area protection. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that switches between point protection and area protection based on the accuracy of the location information of the primary wireless station or the accuracy of the interference power from secondary wireless stations predicted from the location information of the primary wireless station.

[0384] The accuracy of the use location information of the primary wireless station may be included in, for example, the detailed specifications of the primary wireless station or the use schedule information. The accuracy of the interference power may be given in advance as prior information, or may be predicted from environmental data such as the topography of the vicinity of the use location. For example, when it is predicted from map data that the surrounding environment will reduce the prediction accuracy of the propagation loss, the communication control device 40 may switch from point protection to area protection. Furthermore, when a very narrow range is calculated as the rotation range of the antenna in the prediction of the direction of the antenna to be protected, which will be described later, or when the range cannot be calculated, the communication control device 40 may determine that the accuracy of the calculation result is likely to be low, and may switch from point protection to area protection. Note that the criteria for switching need not be limited to these, and parameters related to the use mode or the use location information, or values ​​calculated using them, may be used as the switching criteria.

[0385] The extended protected area may be, for example, within a certain distance from the actual usage location. This distance may be given in advance by laws and regulations, or may be provided by the operator of the primary system, an administrative agency, or a third party. Also, a different value may be specified depending on the surrounding environment.

[0386] Furthermore, if an anomaly is found in the result of a calculation performed under point protection, the communication control device 40 may switch to area protection and perform the calculation again. For example, the number of primary wireless stations permitted to be used, the ratio of the number to the total number, or the transmission power of a primary wireless station may be equal to or greater than a specified value.

[0387] Furthermore, the communication control device 40 may perform area protection using the usage area of ​​another primary wireless station. FIG. 25 is a diagram showing an example of the positional relationship between the usage location of the primary wireless station and the usage areas of the other wireless stations. As shown in FIG. 25, when the usage location of the primary wireless station 1 used at a certain point is included in the usage area of ​​a different primary wireless station 2 and there is an overlap in the usage times of the two primary wireless stations, the primary wireless station 1 may also perform area protection using the usage area of ​​the primary wireless station 2. At this time, if a calculation result for the primary wireless station 2 has been calculated, the result may be used to protect the primary wireless station 1. Conversely, if a calculation result for the primary wireless station 2 has not been calculated, the result for the primary wireless station 1 may be used to protect the primary wireless station 2. At this time, when the utilization location of a first wireless station (for example, the primary wireless station 1) is included in the utilization area of ​​a second wireless station (for example, the primary wireless station 2) and there is an overlap in the utilization times of the first wireless station and the second wireless station, the control unit 44 of the communication control device 40 functions as a processing unit that implements area protection for the first wireless station using the utilization area of ​​the second wireless station.

[0388] The communication control device 40 may also switch the protection method based on the usage time of the primary wireless station. FIG. 26 is a diagram showing an example of the relationship between the protection method and usage time of the primary wireless station and the protection method and usage time of other wireless stations. As shown in FIG. 26, when the usage time of the primary wireless station 1 is not completely included in the usage time of the primary wireless station 2, the communication control device 40 may implement both point protection and area protection for the primary wireless station 1. For example, the communication control device 40 may implement area protection while the primary wireless station 1 is being used during the usage of the primary wireless station 2, and may switch to point protection when the primary wireless station 1 is still being used after the usage of the primary wireless station 2 has ended. Of course, the reverse operation is also allowed. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that switches the point protection of the first wireless station to area protection using the usage area of ​​the second wireless station while the usage time of the first wireless station (the primary wireless station 1 as an example) and the usage time of the second wireless station (the primary wireless station 2 as an example) overlap.

[0389] Also, even if the occupied bands of the primary wireless station 1 and the primary wireless station 2 do not match, area protection may be performed using the utilization area of ​​the primary wireless station 2. FIG. 27 is a diagram showing an example of the occupied band of the primary wireless station and the occupied bands of other wireless stations. As shown in FIG. 27, when the primary wireless station 1 and the primary wireless station 2 use adjacent frequency channels and the secondary wireless station uses a channel that combines the two, the communication control device 40 may replace the point protection of the primary wireless station 1 with the area protection of the primary wireless station 2. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that switches the point protection of the first wireless station to the area protection of the second wireless station when the first wireless station (the primary wireless station 1 as an example) and the second wireless station (the primary wireless station 2 as an example) use different frequency channels and there is a secondary wireless station whose utilization frequency channel partially overlaps with these two frequency channels.

[0390] The location information used may also include the installation location of the antenna. In other words, the location information used may include the height direction position. When it is known that the primary wireless station moves or the installation location of the antenna is adjusted at the time of installation, the antenna installation location may be given as a range rather than a fixed value. FIG. 28 is a diagram showing an example of an antenna installation range. When the installation location of the antenna is given as a range, that is, when the location information used in the height direction is given as a range, the communication control device 40 may set protection points at regular intervals in the height direction as well as in the horizontal direction as shown in FIG. 28, and perform interference calculation for primary protection for each of the protection points. At this time, when the location information used is given as a range in the horizontal direction and the height direction, the control unit 44 of the communication control device 40 functions as a processing unit that performs interference calculation for primary protection for each protection point set in the horizontal direction and the height direction. Such primary protection may also be included in area protection. On the other hand, primary protection when the location information used is given as a fixed value in both the horizontal direction and the height direction becomes point protection. Even in this case, point protection and area protection may be switched according to the criteria described above.

[0391] Although the above describes the case of static point / area protection, these techniques can also be applied to the case of dynamic point / area protection.

[0392] <6-3-4. Supplementary information on point and area protection for planned use> When the utilization location information is not included in the utilization schedule or when the communication control device itself wants to set new points or areas to be protected, the communication control device 40 may predict the points and areas to be protected using utilization location information and utilization antenna information of other wireless stations to which communication is to be made, and select and implement the primary system protection method. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that predicts the points and areas to be protected when the points and areas to be protected are not included in the utilization schedule of the wireless station, and when the points and areas to be protected are to be newly set.

[0393] Cases in which points or areas are not included in the usage location information may include cases in which the operator of the primary system is unable to provide usage location information because the operator of the primary system does not want the location of the wireless station to be known in advance, or because the location of use is unknown until the last minute due to unplanned use, etc.

[0394] For example, an area within a certain distance from a point where a wireless station with which wireless station A communicates is located may be set as a protected area of ​​wireless station A. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that predicts the protected point and the protected area based on the usage location information of a second wireless station different from the first wireless station which is a wireless station of the primary system.

[0395] Also, for example, as shown in FIG. 29, the location information of the base station 200 is used to calculate an area that satisfies a required CINR (Carrier to Interference and Noise Ratio) value when the base station 200 receives a signal from the mobile station 300 at an arbitrary point, and the area that satisfies the required value is defined as a protection area PA of the mobile station 300. 1 For example, the maximum distance D that satisfies the required CINR can be 1 An area satisfying the above may be set as a protected area. Specifically, as an example, a range of coordinates (x, y) satisfying the following formula (1) is set as a protected area. In the example shown in FIG. 29, the control unit 44 of the communication control device 40 functions as a processing unit that calculates communication quality (e.g., CINR) when a signal from a first wireless station (e.g., a mobile station 300) is received by a second wireless station based on utilization location information of the second wireless station (e.g., a fixed station 200), and predicts a protected point and a protected area based on the calculated communication quality. FIG. 29 is a diagram showing an example of a protected area of ​​a mobile station.

[0396]

number

[0397] The protected area may be a range in which the received power from a mobile station satisfies a predetermined value at a fixed station. Specifically, as an example, the protected area is a range of coordinates (x, y) that satisfies the following formula (2).

[0398]

number

[0399] Furthermore, the area within which a signal from a fixed station satisfies a desired CINR or reception power may be defined as the protection area of ​​the mobile station.

[0400] In this case, the coordinates (x, y) may not be a continuous range, but may be a set of the above protection points. Also, the above coordinates may be three-dimensional coordinates taking into account the antenna height, etc.

[0401] In addition, the area in which the mobile station is used may be used as location information to predict the area to be protected. For example, if a signal from the mobile station 300b is detected in a certain usage area (e.g., usage area UA 1 30, the maximum distance D that satisfies the required CINR and the required reception power may be set as the protection area of ​​the mobile station 300b. 2 As shown in FIG. 30, the area within a certain usage area (e.g., usage area UA 1 The range in which a signal from a mobile station 300a moving within the protection area PA ) always satisfies the required communication quality at the mobile station 300b is defined as the protection area PA 2 In the example shown in Fig. 30, the control unit 44 of the communication control device 40 functions as a processing unit that calculates communication quality (e.g., CINR or received power) when a signal from a first wireless station (e.g., mobile station 300b) is received by a second wireless station based on utilization location information of the second wireless station (e.g., mobile station 300a), and predicts a protected point and a protected area based on the calculated communication quality. Note that Fig. 30 is a diagram showing an example of a protected area of ​​a mobile station.

[0402] In addition, when the area in which the mobile station 300a is used is specified, but the location of the fixed station (200a or 200b) is unknown, the area in which the mobile station 300a is used (for example, the area of ​​use UA 1 ) to the protection area PA of the fixed station (200a or 200b) 3 For example, a range in which a signal from the mobile station 300a satisfies a desired CINR or received power may be set as a protected area of ​​the base station (200a or 200b). Note that FIG. 31 is a diagram showing an example of a protected area of ​​a base station.

[0403] Note that a certain margin may be provided in these areas to be protected (see FIGS. 29 to 31).

[0404] Also, the protection area may be predicted according to the reference for creating a PPA as described in [6].

[0405] In addition, the range R within which the antenna of the fixed station 200 or the mobile station 300a rotates 1 When the above information is given, the protected area PA of the mobile station 300b is as shown in FIG. 4 In this case, the antenna rotation range may be three-dimensional, taking into consideration not only the azimuth and boresight, but also the antenna installation height and down tilt. Also, the protected area may be an antenna rotation range with a certain margin. In the example shown in FIG. 32, the control unit 44 of the communication control device 40 functions as a processing unit that predicts the protected points and protected areas of the primary system (for example, of the mobile station 300b) based on antenna information of the antenna used in the second wireless station (for example, the fixed station 200 or the mobile station 300a). Note that FIG. 32 is a diagram showing an example of a protected area of ​​a mobile station.

[0406] In addition, the points and areas to be protected by the primary wireless station may be estimated using information on wireless stations of different wireless systems.

[0407] For example, a certain distance from the utilization position of a fixed station of a certain wireless system EX1 may be set as the movement range of a mobile station of the system EX1, and this movement range may be set as a protection target area of ​​a mobile station of a wireless system EX2 juxtaposed to the mobile station of the system EX1. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that predicts the protection target points and protection target areas of the primary system (e.g., a mobile station of the wireless system EX2) based on utilization position information of a third wireless station (e.g., a fixed station of the wireless system EX1) of a wireless system different from the primary system.

[0408] 33, the movement range of the mobile station 300a_for_EX1 of the system EX1 is predicted by calculating the required CINR at the base station 200 of the wireless system EX1, and this movement range is calculated based on the protection area PA of the mobile station 300b_for_EX2 of the wireless system EX2 that is attached to the mobile station 300a_for_EX1 of the system EX1. 5 _for_300b. Note that FIG. 33 is a diagram showing an example of a protected area of ​​a mobile station. In the example shown in FIG. 33, the control unit 44 of the communication control device 40 functions as a processing unit that calculates communication quality when a signal of a third wireless station (e.g., mobile station 300a) is received by a first wireless station (e.g., fixed station 200) that is a wireless station of the primary system based on utilization location information of the third wireless station, predicts utilization location information of the third wireless station based on the calculated communication quality, and uses the predicted location information as a protected point or a protected area of ​​a wireless station of the primary system (e.g., mobile station 300b of wireless system EX2). Note that FIG. 33 is a diagram showing an example of a predicted protected point and a protected area.

[0409] For example, the wireless system EX1 may be a microwave FPU using TSL or the 5.7 GHz band used for transmitting video from an FPU receiving station to a broadcasting studio, and the wireless system EX2 may be a 2.3 GHz FPU receiving station.

[0410] Also, the location of the target wireless station may be predicted using antenna information of the wireless station of the different wireless system when it is in use, and this location may be set as the protected point / area of ​​the primary wireless station. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that predicts location information of the wireless station of the primary system based on antenna information of the antenna used by the third wireless station.

[0411] In addition, the location information and antenna information when using different systems can be used to predict the usage points and areas of the primary wireless station and the antenna information when in use, and from these, the protected points and areas of the primary wireless station with which communication is targeted can be estimated.

[0412] Also, for example, by calculating the required CINR at the base station 200 of the wireless system EX1 as shown in FIG. 34, the movement range of the mobile station 300a of the wireless system EX1 is predicted, and this is then used as the protection area PA of the mobile station 300b of the wireless system EX2. 6 _for_300b, and further calculate the required CINR for the mobile station 300b of the wireless system EX2, to obtain the protected point area PA 7 34, the control unit 44 of the communication control device 40 functions as a processing unit that calculates communication quality of a signal from a fifth wireless station (mobile station 300c) that is a wireless station of the primary system received by the fourth wireless station (mobile station 300b) that is a wireless station of the primary system using utilization location information of a third wireless station (e.g., mobile station 300a) as utilization location information of a fourth wireless station (mobile station 300b) that is a wireless station of the primary system, and predicts a protected point and a protected area of ​​the fifth wireless station based on the calculated communication quality. Note that FIG. 34 is a diagram showing an example of a predicted protected point and a protected area.

[0413] This prediction method may also be used when the location information already contains points and areas. For example, it may be used when the communication control device 40 predicts more accurate points and areas to be protected in order to increase communication opportunities for the secondary system.

[0414] <6-3-5. Supplementary information regarding point and area protection for unplanned use> In the FPU model 1 receiving station, the location information may include points that may be used, so dynamic point protection is performed for these points. In addition, in the FPU transmitting station model 1 and the transmitting / receiving station model 5, information on areas that may be used, such as DPA, may be given, so dynamic area protection may be performed for these areas.

[0415] Furthermore, for the purpose of increasing opportunities to use the secondary system and reliably protecting the primary system, the communication control device 40 may independently generate a DPA by dividing the area to be protected into a plurality of areas based on a certain criterion.

[0416] The communication control device 40 does not necessarily generate a DPA only when the DPA is not given in the usage schedule information, etc. For example, this applies when the usage location information is predicted using a method similar to that described above in <6-3-4.>. Even when the usage schedule information includes the DPA itself, the communication control device 40 may independently determine to create a new DPA in order to increase the usage opportunities of the secondary system and ensure the protection of the primary system.

[0417] Parameters required by the communication control device when generating a DPA, such as the area division size, can be set in advance by the operator of the primary system, a public service agency, a government agency, a third party, etc., and can be obtained from an external database, planned usage information of the primary system, etc.

[0418] Furthermore, regardless of whether these parameters are provided or not, the communication control device 40 may independently set parameters such as the area division size using information such as the hardware performance and placement status, surrounding environment, and protection requirements of each communication device of the primary system and secondary system and sensors that detect the use of the primary system.

[0419] For example, in order to more reliably protect the primary system, parameters such as the area division size required for the communication control device 40 to generate a DPA may be determined according to the detection accuracy of the primary system usage. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that determines a DPA obtained by dividing the area to be protected into a plurality of areas, using parameters set based on the detection accuracy of the usage of wireless stations.

[0420] For example, the division size of the DPA may be determined based on the accuracy of the position information of the sensor or the primary wireless station. For example, if the accuracy of the positioning function such as GPS mounted on the primary wireless station is not sufficient, the division size of the DPA may be increased or a margin may be provided by allowing overlap of each DPA so that the sensor or the primary wireless station is reliably protected even if the position of the sensor or the primary wireless station is shifted. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that determines DPAs that divide the protection target area into multiple areas using parameters that are set based on the detection accuracy of the primary system and the position information accuracy of the primary system.

[0421] Also, for example, the division size of the DPA may be determined by reflecting the fluctuation in the detection accuracy of the primary system due to the surrounding environment such as topography, buildings, etc. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that determines the DPA by dividing the protection target area into a plurality of areas using parameters that are set based on the fluctuation in the accuracy of the location information due to the surrounding environment.

[0422] Also, for example, DPAs of different sizes may be set in different areas based on the placement of sensors (an example of a detection unit) for detecting the use of the primary system. A small DPA may be set in an area where sensors are densely placed, and a large DPA may be set in an area where sensors are sparsely placed. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that determines DPAs obtained by dividing the area to be protected into multiple areas using parameters that are set based on placement information of the detection units that detect the primary system.

[0423] In addition, in cases where the accuracy of detecting the use of the primary system can be guaranteed, for example, when the primary wireless station has a highly accurate positioning function and the location information is included in the use notification of the primary system, a grid including only one protection point may be considered as one DPA.

[0424] For example, in order to reduce the number of secondary radio stations that are required to stop radio waves or change parameters when they detect the use of the primary system, and to increase the opportunities to use the secondary system, the DPA division size may be set as small as possible while still satisfying the protection standards.

[0425] Also, two or more DPAs of different sizes may be set in the same area, and the most suitable DPA may be selected when the use of the primary system is detected, to control the secondary system. For example, when it is simultaneously notified that the accuracy of the location information of the primary system is insufficient, a DPA of as large a size as possible is selected from the multiple DPAs so that the obtained accuracy can provide sufficient protection. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that determines DPAs of different sizes in the same area.

[0426] The division size of the DPA may be determined based on information on the secondary wireless station. For example, if the accuracy of the positioning function such as GPS mounted on the secondary wireless station is not sufficient, the division size of the DPA may be increased or a margin may be provided by allowing overlap of each DPA so that the secondary wireless station is reliably protected even if the position of the secondary wireless station is shifted. The accuracy of these may be determined not only by the hardware performance of the sensor and the positioning function, but also by the surrounding environment such as the topography and buildings. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that determines the DPA in which the protection target area is divided into multiple areas using parameters that are set based on the accuracy of the positioning function of the wireless station of the wireless system different from the primary system.

[0427] Also, as shown in FIG. 35, the entire moving area of ​​the mobile station 300 is divided into a plurality of areas (for example, area MA 1 ~MA 3 ), and for each of the moving areas, a range in which the signal from the mobile station 300 to the base station 200 satisfies a required value is calculated, and these are determined as DPAs corresponding to the base stations. That is, the DPAs for the moving areas may overlap. When dividing the moving area, the size, etc., may be changed according to the position of the mobile station 300 and the detection accuracy of the signal. In the example shown in FIG. 35, the control unit 44 of the communication control device 40 functions as a processing unit that divides the entire moving area of ​​a wireless station (e.g., the mobile station 300) into a plurality of regions, and determines a protected area to be set for the wireless station (e.g., the base station 200) to communicate with as a DPA in each divided region. Note that FIG. 35 is a diagram showing an example of a dynamic protected area for each region divided into the entire moving area.

[0428] <6-4. Point area protection considering antenna rotation range> CBRS point area protection assumes cases where parameters related to the antenna rotation range of the protected radio station (down tilt, elevation, azimuth, etc.) are given as values, such as for Fixed-Satellite Service earth stations, or where it does not matter in which direction the antenna is pointed, as in Federal Incumbent.

[0429] On the other hand, in a primary system such as an FPU, it is expected that antenna parameters such as down tilt, elevation, and azimuth will change each time the wireless station is used, and that the antenna will rotate during use, causing parameters such as down tilt, elevation, and azimuth to fluctuate.

[0430] In an embodiment of the present disclosure, point area protection is performed assuming that the antenna of a wireless station rotates during planned use, changing parameters such as down tilt, elevation, and azimuth, and dynamic point area protection is performed using parameters such as antenna direction notified during unplanned use of a primary wireless station.

[0431] <6-4-1. Point area protection considering antenna rotation during planned use> A plurality of protected antenna directions are set according to a specified criterion within the rotation range of the antenna in use obtained from the in-use antenna information. Then, point protection or area protection is performed assuming that the antenna of the primary wireless station is oriented in each of the protected antenna directions, and the secondary wireless station is instructed to achieve primary system protection in all of the protected antenna directions, thereby ensuring protection of the primary system even when the antenna is rotated during use.

[0432] For example, as shown in Figure 36, the range of azimuth that the antenna rotates during use, Azi_R 1 If the antenna position P 1 The circumference of a horizontal plane centered on is divided into a certain angle Δθ within the range of Azimuth. Then, the center of the circle, that is, the antenna position P 1 The direction to the center of each range of the divided circumference is the protected antenna direction PAD 1 36. Point protection or area protection is performed for each of the set protected antenna directions. In the example shown in FIG. 36, the control unit 44 of the communication control device 40 functions as a processing unit that determines the protected point or protected area by setting the protected antenna directions at a constant interval within the rotation range of the antenna being used in the wireless station. The control unit 44 also functions as a processing unit that sets two-dimensional protected antenna directions by dividing the azimuth range in which the antenna rotates while being used by a constant angle. FIG. 36 is a diagram showing an example of setting two-dimensional protected antenna directions.

[0433] In addition, the antenna information when in use is Down tilt, Azimuth range Dt_R 1 , Azi_R 2 When the antenna position P is given as shown in Figure 37, 2 The range of the given down tilt and azimuth of the sphere centered on is divided into fixed angles Δφ and Δθ to create a three-dimensional grid. Then, the center of the sphere, that is, the antenna position P 2 The direction of the center of each grid is protected by the antenna direction PAD 2 In the example shown in Fig. 37, the control unit 44 of the communication control device 40 functions as a processing unit that sets a three-dimensional direction of an antenna to be protected by dividing the range of Azimuth in which the antenna rotates while in use and the range of Down tilt by a certain angle. Note that Fig. 37 is a diagram showing an example of setting a three-dimensional direction of an antenna to be protected.

[0434] As an example of when-in-use antenna information is given as a range of values, a case is assumed in which FPU models 2 to 6 are planned for use.

[0435] Also, the range of antenna parameters such as down tilt, azimuth, and boresight in use may be predicted using the protected points and areas of the wireless station with which communication is conducted, and the antenna information in use may be set within the range. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that predicts the rotation range of the antenna in use using the protected areas or protected points of the wireless station with which communication is conducted.

[0436] For example, as shown in Figure 38, two tangent lines are drawn from the antenna position P3_WSB of wireless station B to the protected area PA_WSA of wireless station A, which is represented two-dimensionally. The angle at which these two lines intersect at the position of wireless station B is the Azimuth range Azi_R in use. 3 The range of Azimuth is Azi_R 3The direction of the antenna to be protected may be set as described above. In the example shown in Fig. 38, the control unit 44 of the communication control device 40 functions as a processing unit that sets the angle between two tangents drawn from the wireless station to the protected area of ​​the wireless station with which the wireless station is to communicate as the range of azimuth within which the antenna in use rotates. Fig. 38 is a diagram showing an example of setting the direction of the antenna to be protected two-dimensionally.

[0437] Also, the range of down tilt and azimuth that the antenna can take during use may be estimated in three dimensions. For example, the range of down tilt and azimuth that the antenna can take may be estimated from the protected area of ​​the communication target. As shown in FIG. 39, the protected area PA_WSA of the wireless station A is estimated based on the antenna position P 4 The area on this projected sphere is the range of down tilt and azimuth that the antenna of wireless station B can take during use, Dt_R. 2 , Azi_R 4 The direction of the antenna to be protected may be set as follows. In the example shown in Fig. 39, the control unit 44 of the communication control device 40 functions as a processing unit that projects the protected area of ​​the wireless station to be communicated with onto a sphere centered on the wireless station of the primary system, and sets the area on the projected sphere as the range of Azimuth and Down tilt that the antenna can have during use. Note that Fig. 39 is a diagram showing an example of setting the direction of the antenna to be protected three-dimensionally.

[0438] This prediction of the direction of the antenna to be protected may also be used in conjunction with antenna information provided at the time of use. For example, when a wireless station with a complex usage area is the communication partner, by predicting values ​​more accurate than the range of antenna parameters provided in advance, it is possible to protect the primary system with higher accuracy and increase communication opportunities for the secondary system.

[0439] Furthermore, each parameter of the antenna does not necessarily have to be independent. For example, the range of Azimuth values ​​may be given by a function that uses the Down tilt value as an argument.

[0440] In addition, the object of protection for a wireless station may be an area rather than a point. In this case, primary system protection is performed after setting the direction of the antenna to be protected for each protection point set within the protection area.

[0441] It is not necessary for all protection points in the same protection area to have the same protected antenna information, and a different protected antenna direction may be set for each protection point. For example, as shown in FIG. 40, each protection point (pp 1 ~pp 3 ), the protected antenna direction may be the direction in which wireless station B is located (for example, the direction of each line connecting each protection point and antenna position P5_WSA). The protected antenna direction may have parameters other than Azimuth. Wireless station B does not necessarily have to be a fixed station. FIG. 40 is a diagram showing an example of setting a different protected antenna direction for each protection point.

[0442] The angle for setting the direction of the antenna to be protected may be determined in advance by legislation etc. according to the required accuracy of primary system protection, or may be provided by the operator of the primary system, a public service agency, a government agency, a third party etc.

[0443] The angle at which the direction of the antenna to be protected is set may be changed depending on the calculation capability of the communication control device 40. For example, if the calculation capability of the communication control device 40 is high, the direction of the antenna to be protected may be set at an angle smaller than a preset angle. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that changes the interval at which the direction of the antenna to be protected is set depending on the calculation capability of the device itself.

[0444] <6-4-2. Dynamic point area protection considering antenna direction notified during unscheduled use> By performing dynamic point / area protection using a dynamic antenna rotation range (hereinafter referred to as "DARR"), which divides the antenna rotation range that the antenna of the radio station to be protected may use according to a certain criterion, the communication control device 40 instantaneously protects the antenna direction notified during unscheduled use. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that selects dynamic point protection or dynamic area protection using the DARR, which divides the antenna rotation range that the radio station antenna may use according to a certain criterion.

[0445] For each DARR, a list of secondary wireless stations that need to stop radio waves or change parameters when unplanned use is detected is created, and when actual use is detected, the communication control device 40 issues instructions to the secondary wireless stations according to the instruction list corresponding to the DARR that includes the notified antenna direction.

[0446] In addition, when creating the list of secondary wireless stations, the communication control device 40 may set multiple antenna directions to be protected in the DARR, as in the case of planned use, and then implement dynamic point area protection. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that sets multiple antenna directions to be protected in the DARR.

[0447] In addition, when DARR is used for dynamic area protection, a list of secondary wireless stations is created for each combination of DPA and DARR, since DARR is set for each DPA. Note that a common DARR may be used for all DPAs, or each DPA may use a different DARR.

[0448] In addition, DARR can be provided as antenna information at the time of use of scheduled use information, or it may be obtained from an external database, etc., that has been pre-set by the operator of the primary system, a public service agency, a government agency, a third party agency, etc.

[0449] In addition, when the DARR is not provided and the in-use antenna information includes an antenna rotation range that may be used, the communication control device 40 itself may generate the DARR from the given antenna rotation range.

[0450] For example, the communication control device 40 may be configured to detect the antenna of the wireless station of the primary system (position P 6 _PWS) is assumed to be a circle on a horizontal plane centered on the Azimuth range Azi_R that a radio station may use during unscheduled use. 5 Divide into multiple ranges and use DARR (e.g., DARR 1 ~DARR 3 ) in the DARR. The previously described protected antenna directions may be set in the DARR, and a list of instructions to the secondary radio stations may be created such that primary system protection is achieved for all protected antenna directions in the DARR. In the example shown in FIG. 41, the control unit 44 of the communication control device 40 functions as a processing unit that sets a two-dimensional DARR by dividing the azimuth range of an antenna that may be used by a certain angle. FIG. 41 is a diagram showing an example of setting a two-dimensional dynamic antenna rotation range.

[0451] Also, the communication control device 40, for example, as shown in FIG. 42, detects the antenna of the wireless station of the primary system (position P 7 The range of Azimuth and Down tilt that a primary wireless station may take during unscheduled use is assumed to be a sphere centered on the primary wireless station. 3 , Azi_R 6The DARR may be obtained by dividing the above-mentioned antenna direction to be protected into several three-dimensional regions on a sphere. In each DARR, the above-mentioned protected antenna directions may be set, and a list of instructions to the secondary radio stations may be created so that primary system protection is achieved for all protected antenna directions in the DARR. In the example shown in FIG. 42, the control unit 44 of the communication control device 40 functions as a processing unit that sets a three-dimensional DARR by dividing the azimuth range and the down tilt range that the antenna of the radio station of the primary system can take by a certain angle. Note that FIG. 42 is a diagram showing an example of setting a three-dimensional dynamic antenna rotation range.

[0452] Furthermore, if the in-use antenna information does not include an antenna rotation range that may be used, the antenna rotation range that may be used may be predicted from the use location information of other wireless stations that may be communication targets, and then used to set the DARR, as in the case of planned use. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that sets the DARR using the antenna rotation range that may be used, predicted from the information of other wireless stations that may be communication targets.

[0453] Furthermore, even when the DARR or the antenna rotation range that may be used cannot be obtained, the communication control device 40 may generate a DARR on its own. For example, the communication control device 40 may independently determine and set a new DARR in order to increase the opportunities for using the secondary system or to reliably protect the primary system.

[0454] In addition, parameters required for setting DARR, such as the DARR division size, may be set in advance by the operator of the primary system, a public service agency, a government agency, a third party, etc., and may be obtained from an external database, the planned usage information of the primary system, etc.

[0455] Furthermore, regardless of whether these parameters are provided or not, the communication control device 40 may independently set parameters such as the DARR division size using information such as the hardware performance and placement status, surrounding environment, and protection requirements of each communication device of the primary system and secondary system and sensors that detect the use of the primary system.

[0456] For example, in order to more reliably protect the primary system, parameters such as the segment size required for the communication control device 40 to generate a DARR may be determined according to the detection accuracy of the antenna direction when the primary wireless station is used. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that sets the DARR using parameters set based on the detection accuracy of the antenna direction when the wireless station is used.

[0457] For example, the division size of the DARR may be determined based on the detection accuracy of the antenna direction by a sensor. For example, if the antenna direction estimation accuracy of the primary wireless station by the sensor is low, the division size of the DARR may be increased or each DARR may be overlapped to provide a margin so that protection is ensured even if the detected antenna direction is shifted. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that sets the DARR using parameters that are set based on the detection accuracy of the antenna direction by the sensor that detects the antenna direction.

[0458] In addition, the communication control device 40 may set a DARR that includes only one protected antenna direction when it can guarantee high detection accuracy of the antenna direction of the primary wireless station, for example, when the operator of the primary system notifies the communication control device 40 of the exact antenna direction when the primary wireless station is used.

[0459] Furthermore, the communication control device 40 may set the division size of the DARR as small as possible within a range that satisfies a defined protection standard, with the aim of increasing opportunities to use the secondary system.

[0460] The communication control device 40 may also set two or more DARRs with different division sizes in the antenna rotation range that may be used, and select the most suitable DARR when detecting the use of the primary system to control the secondary system. For example, when it is notified at the same time that the detection accuracy of the antenna direction of the primary system is insufficient, a DARR with as large a division size as possible is selected from the multiple DARRs so that the accuracy can be used to provide sufficient protection, and an instruction is given to the secondary radio station. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that sets two or more DARRs with different division sizes in the antenna rotation range that may be used.

[0461] Also, when the antenna direction notified by the detection of the use of the primary system is given as a range, the communication control device 40 may issue instructions to the secondary wireless station using a list of two or more DARRs that can cover this range. Furthermore, when the notified antenna direction includes multiple values, the communication control device 40 may issue instructions to the secondary wireless station according to a list of two or more DARRs that include them.

[0462] Furthermore, when the antenna direction is not notified by detecting the use of the primary system, the communication control device 40 may predict the antenna directions of the primary wireless stations communicating with each other by using the positional relationship between the primary wireless stations. In this case, if an error is expected to occur in the prediction result, the effect of this error may be minimized by providing an appropriate margin.

[0463] <6-4-3. Antenna parameter range prediction> The method of predicting the range of antenna parameters varies depending on whether the location information of the wireless station to be used is a point or an area. An example of the method of predicting the range of antenna parameters will be described below. In the following description, an example will be described in which the communication control device 40 predicts the range of antenna parameters of a wireless station X using the points and areas to be protected by a wireless station Y, which is a communication partner.

[0464] The communication control device 40 may predict the protected points and areas of the wireless station Y based on the reception quality in the wireless station X of the signal transmitted by the wireless station Y and the reception quality in the wireless station X of the signal transmitted by the wireless station Y, and may then predict the range of the antenna parameters of the wireless station X using the obtained protected points and areas of the wireless station Y. Fig. 43 is a diagram showing an overview (part 1) of antenna parameter range prediction.

[0465] For example, as shown in Fig. 43, the communication control device 40 may calculate a moving range TAα_WSY of the wireless station Y, which satisfies a required value when the wireless station X, which is a fixed station, receives a signal from the wireless station Y, which is a mobile station, and may set this moving range TAα_WSY as the protected area of ​​the wireless station Y. Then, it may be assumed that the antenna of the wireless station X may be oriented in the direction of the wireless station Y existing anywhere in the protected area, and it may be predicted that the antenna parameters will vary within this range (for example, the range PMRα shown in Fig. 43). At this time, the control unit 44 of the communication control device 40 calculates the moving range of the first wireless station based on the communication quality when the second wireless station (wireless station X, as an example) which is a fixed station receives a signal from the first wireless station (wireless station Y, as an example), sets the calculated moving range as the protected area of ​​the first wireless station, and functions as a processing unit that performs range prediction of the antenna parameters of the second wireless station based on the protected area. The gain of the antenna of wireless station X required for calculating the reception CINR may be the maximum value by assuming that the antenna of wireless station X always faces the direction of wireless station Y.

[0466] Moreover, the wireless station X to be predicted at this time does not necessarily have to be a fixed station, and may be a mobile station whose usage location is given in a certain range, or a fixed station whose location information is given in an area. Fig. 44 is a diagram showing an outline (part 2) of antenna parameter range prediction. In this case, the communication control device 40 may assume that the wireless station X is located at a protection point PPXβ set in the protected area PAβ_WSX (or movement range TAβ_WSX) of the wireless station X as shown in Fig. 44, predict the movement range TAβ_WSY of the wireless station Y based on the reception quality (communication quality) when the wireless station X receives a signal from the wireless station Y, and predict the antenna parameter range PMRβ of the wireless station X based on this movement range TAβ_WSY. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that predicts the movement range of the second wireless station (wireless station Y, for example) based on the communication quality when the first wireless station receives a signal from the second wireless station, assuming that the first wireless station is located at a protection point set within the protected area of ​​the first wireless station (wireless station X, for example), and performs range prediction of the antenna parameters of the first wireless station based on the predicted movement range. This operation may be performed independently for each protection point set within the movement range of the wireless station X, and the range of the antenna parameters of the wireless station X differs for each protection point. Note that the prediction of the range of the antenna parameters of the wireless station X based on the movement range of the wireless station Y can be performed in the same procedure as the method of predicting the range of the antenna parameters of the wireless station A from the protected points and areas of the wireless station B described in <6-4-1.>.

[0467] In addition, even if the movement range and protected area of ​​wireless station Y are given in advance by an external entity as planned use, the communication control device 40 may newly predict the movement range of wireless station Y by calculating, for each protection point, the range inside and outside this movement range and protected area where the reception quality is at or above a certain level, and based on this, predict the range of the antenna parameters of wireless station X for each protection point.

[0468] Furthermore, when the protected area or point of the wireless station X is not given by the usage schedule or the like, the communication control device 40 can execute the range prediction of the antenna parameters by the method described below. FIG. 45 is a diagram showing an outline (part 3) of the range prediction of the antenna parameters. FIG. 46 is a diagram showing an outline (part 4) of the range prediction of the antenna parameters. When the protected area or point of the wireless station X is not given by the usage schedule or the like, the communication control device 40 may predict the movement range TAγ_WSX of the wireless station X from the movement range TAγ_WSY of the wireless station Y, the protected area, or the protected point as shown in FIG. 45 by using the method described in <6-3-4.>, set the protection point PPXγ within it, and then predict the antenna parameter range PMRγ of the wireless station X by using the movement range, the protected area, or the protected point of the wireless station Y for each protection point. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that predicts the movement range of the second wireless station (wireless station X, for example) based on the movement range, protected area, or protected point of the first wireless station (wireless station Y, for example), sets a protection point within the predicted movement range, and performs range prediction of the antenna parameters of the second wireless station based on the movement range, protected area, or protected point of the first wireless station for each protection point. Also, as shown in FIG. 46, the communication control device 40 may predict the antenna parameter range PMRδ of the wireless station X after newly calculating the movement range TAδ_WSY of the wireless station Y for each protection point. At this time, the control unit 44 of the communication control device 40 functions as a processing unit that performs range prediction of the antenna parameters after newly calculating the movement range of the first wireless station for each protection point.

[0469] Furthermore, when the value of the antenna height of the wireless station X given as the scheduled use is within a range, the communication control device 40 can perform range prediction of the antenna parameters by the method described below. FIG. 47 is a diagram showing an overview (part 5) of the range prediction of the antenna parameters. When the value of the antenna height of the wireless station X given as the scheduled use is within a range (for example, the range AHR shown in FIG. 47), the communication control device 40 may set protection points (for example, protection points PPXε_WSX shown in FIG. 47) not only in the horizontal direction but also in the altitude direction, regardless of whether the protection target of the wireless station X is a point or an area, as shown in FIG. 47, and perform range prediction of the antenna parameters for each protection point in the same manner as when the value of the antenna height is not within a range. In this case, when the value of the antenna height of the first wireless station (wireless station X as an example) given as the scheduled use is within a range, the control unit 44 of the communication control device 40 functions as a processing unit that sets protection points not only in the horizontal direction but also in the altitude direction, regardless of whether the protection target of the first wireless station is a protection target point or a protection target area, and performs range prediction of the antenna parameters for each set protection point. Similarly to the case where the antenna height value is not within a range, the movement range of wireless station X (for example, the movement range TAε_WSX shown in FIG. 47), the protected area (for example, the movement range PAε_WSX shown in FIG. 47), and the movement range of wireless station Y (for example, the movement range TAε_WSY shown in FIG. 47) may also be predicted arbitrarily. When predicting the movement range, a protection point may be set in the predicted area in the horizontal direction, and then a protection point may be set in the altitude direction. Note that when the antenna height is not given as the planned use, a common antenna height value or range may be determined for each primary wireless station by rules, laws, regulations, primary carriers, etc., and may be used.

[0470] In addition, although the above explanations have been about antenna rotation range prediction in the case of static point area protection, these methods are also applicable to the case of dynamic point area protection.

[0471] <<7. Modifications>> The above-described embodiment is merely an example, and various modifications and applications are possible.

[0472] <7-1. Modifications regarding system configuration> The communication control device 40 of this embodiment is not limited to the device described in the above embodiment. For example, the communication control device 40 may be a device having a function other than controlling the base station device 20 that secondarily uses the frequency band in which frequency sharing is performed. For example, the function of the communication control device 40 of this embodiment may be provided by a network manager. In this case, the network manager may be, for example, a C-BBU (Centralized Base Band Unit) in a network configuration called C-RAN (Centralized Radio Access Network) or a device equipped with the same. In addition, the function of the network manager may be provided by a base station (including an access point). These devices (such as a network manager) can also be considered as the communication control device 40.

[0473] In the above embodiment, the communication system 1 is the first wireless system, and the base station device 20 is the second wireless system. However, the first wireless system and the second wireless system are not limited to this example. For example, the first wireless system may be a communication device (e.g., wireless communication device 10), and the second wireless system may be a communication system (communication system 2). The wireless system appearing in the present embodiment is not limited to a system composed of multiple devices, and can be replaced with "device", "terminal", etc. as appropriate.

[0474] In the above embodiment, the communication control device 40 is a device belonging to the communication system 2, but it does not necessarily have to be a device belonging to the communication system 2. The communication control device 40 may be a device external to the communication system 2. The communication control device 40 may not directly control the base station device 20, but may indirectly control the base station device 20 via a device constituting the communication system 2. There may be multiple secondary systems (communication systems 2). In this case, the communication control device 40 may manage multiple secondary systems. In this case, each secondary system can be regarded as a second wireless system.

[0475] In general, in frequency sharing, an existing system using a target band is called a primary system, and a secondary user is called a secondary system, but the primary system and secondary system may be replaced with other terms. A macro cell in a Heterogeneous Network (HetNET) may be the primary system, and a small cell or relay station may be the secondary system. A base station may be the primary system, and Relay UE or Vehicle UE that realizes D2D or V2X (Vehicle-to-Everything) within its coverage may be the secondary system. The base station is not limited to a fixed type, and may be a portable / mobile type.

[0476] Furthermore, the interface between each entity may be wired or wireless. For example, the interface between each entity (communication device, communication control device, or terminal device) that appears in this embodiment may be a wireless interface that does not depend on frequency sharing. Examples of wireless interfaces that do not depend on frequency sharing include wireless interfaces provided by mobile communication carriers via licensed bands and wireless LAN communication that uses existing unlicensed bands.

[0477] <7-2. Other variations> The wireless communication device 10, the base station device 20, the terminal device 30, the communication control device 40, or the control device that controls the proxy device 50 in this embodiment may be realized by a dedicated computer system or a general-purpose computer system.

[0478] For example, a program for executing the above-mentioned operations is stored in a computer-readable recording medium such as an optical disk, a semiconductor memory, a magnetic tape, or a flexible disk and distributed. Then, for example, the program is installed in a computer and the above-mentioned process is executed to configure a control device. In this case, the control device may be a device (for example, a personal computer) external to the wireless communication device 10, the base station device 20, the terminal device 30, the communication control device 40, or the proxy device 50. Also, the control device may be a device (for example, the control unit 24, the control unit 34, the control unit 44, or the control unit 54) internal to the wireless communication device 10, the base station device 20, the terminal device 30, the communication control device 40, or the proxy device 50.

[0479] The communication program may be stored in a disk device provided in a server device on a network such as the Internet, and may be downloaded to a computer. The above-mentioned functions may be realized by cooperation between an OS (Operating System) and application software. In this case, the parts other than the OS may be stored on a medium and distributed, or the parts other than the OS may be stored in a server device and may be downloaded to a computer.

[0480] Furthermore, among the processes described in the above embodiments, all or part of the processes described as being performed automatically can be performed manually, or all or part of the processes described as being performed manually can be performed automatically by a known method. In addition, the information including the processing procedures, specific names, various data and parameters shown in the above documents and drawings can be changed arbitrarily unless otherwise specified. For example, the various information shown in each drawing is not limited to the illustrated information.

[0481] In addition, each component of each device shown in the figure is a functional concept, and does not necessarily have to be physically configured as shown in the figure. In other words, the specific form of distribution and integration of each device is not limited to that shown in the figure, and all or part of them can be functionally or physically distributed and integrated in any unit according to various loads, usage conditions, etc.

[0482] The above-described embodiments can be combined as appropriate in the areas where the processing contents are not contradictory. The order of each step shown in the sequence diagram or flow chart of the present embodiment can be changed as appropriate.

[0483] <<8. Conclusion>> As described above, according to one embodiment of the present disclosure, the communication control device 40 selects one of a plurality of protection methods for the primary system, including dynamic and static protection methods, based on the usage pattern and usage location information of the wireless stations of the primary system. Then, the communication control device 40 protects the wireless stations of the primary system based on the selected protection method.

[0484] This allows, for example, an FPU operated by a broadcasting company in Japan to properly protect the primary system from the secondary system.

[0485] For example, one of the differences between FPU and the primary system that has been assumed in the past for CBRS, TVWS, etc. is that since wireless stations can move, the usage location can be a point or an area for each usage model. Furthermore, there are two usage forms, and the information shown as the usage location during unscheduled usage is merely a candidate area. In the embodiment of the present disclosure, the communication control device 40 can analyze information provided by the primary system and switch the primary system protection method depending on the usage model and usage form. As a result, the primary system can be appropriately protected from the secondary system.

[0486] Another feature of the FPU is that the antenna of the wireless station with which the communication is to be performed can be moved in response to the movement of the wireless station. For example, in the planned use of the above-mentioned models 2 to 6, the antenna of the receiving station may rotate in response to the movement of the transmitting station, so the entire rotation range must be protected. In addition, in the unplanned use of the above-mentioned models 1 and 5, when the transmitting station detects that it is used in a candidate area, the receiving station antenna may be directed in that direction, so it is necessary to protect the antenna so that it can be directed anywhere in its rotation range. In the embodiment of the present disclosure, the communication control device 40 can realize point area protection that takes into account the antenna rotation during planned use, as well as dynamic point area protection that takes into account the antenna direction notified during unplanned use. As a result, the primary system can be appropriately protected from the secondary system.

[0487] Although the embodiments of the present disclosure have been described above, the technical scope of the present disclosure is not limited to the above-described embodiments as they are, and various modifications are possible without departing from the gist of the present disclosure. In addition, components of different embodiments and modifications may be appropriately combined.

[0488] Furthermore, the effects of each embodiment described in this specification are merely examples and are not limiting, and other effects may also be provided. The present technology can be configured as follows. (1) A control unit that selects one of a plurality of protection methods for the primary system, including dynamic or static protection methods, based on the usage pattern and usage location information of the radio stations of the primary system, and protects the radio stations of the primary system based on the selected protection method. A communication control device comprising: (2) The control unit is When the wireless station is in planned use, one of the static protection methods is selected and implemented, and when the wireless station is in unplanned use, one of the dynamic protection methods is selected and implemented. The communication control device according to (1). (3) The control unit is Selecting and implementing point protection based on a protection target point of the wireless station determined based on the utilization location information of the wireless station; Selecting and implementing area protection based on a protection target area of ​​the wireless station, which is determined based on the utilization location information of the wireless station. The communication control device according to (2). (4) The control unit is When the protection target point and the protection target area are not included in the usage schedule of the wireless station, and when the protection target point and the protection target area are newly set, the protection target point and the protection target area are predicted. The communication control device according to (3). (5) The control unit is The protected point and the protected area are predicted based on usage location information of a second wireless station different from a first wireless station which is a wireless station of the primary system. The communication control device according to (4). (6) The control unit is Calculating communication quality when the signal of the first wireless station is received by the second wireless station based on usage location information of the second wireless station, and predicting the protected point and the protected area based on the calculated communication quality. The communication control device according to (5) above. (7) The control unit is Predicting the protected points and the protected area based on antenna information of an antenna used by the second wireless station. The communication control device according to (5) above. (8) The control unit is The protected point and the protected area are predicted based on utilization location information of a third wireless station of a wireless system different from the primary system. The communication control device according to (4). (9) The control unit is Calculating communication quality when a signal of the third wireless station is received by a first wireless station which is a wireless station of the primary system based on utilization location information of the third wireless station, predicting utilization location information of the third wireless station based on the calculated communication quality, and using the predicted location information as the protected point or the protected area. The communication control device according to (8). (10) The control unit is Using the utilization location information of the third wireless station as utilization location information of a fourth wireless station which is a wireless station of the primary system, a communication quality of a signal from a fifth wireless station which is a wireless station of the primary system received by the fourth wireless station is calculated, and the protected point and the protected area of ​​the fifth wireless station are predicted based on the calculated communication quality. The communication control device according to (9) above. (11) The control unit is Predicting utilization location information of the wireless station of the primary system based on antenna information of the antenna used by the third wireless station. The communication control device according to (8). (12) The control unit is The protection target area is divided according to a certain criterion to determine a plurality of areas as dynamic protection target areas. The communication control device according to (3). (13) The control unit is The dynamic protection target area is determined by dividing the protection target area into a plurality of areas using a parameter set based on the utilization detection accuracy of the wireless station. The communication control device according to (12) above. (14) The control unit is The dynamic protection target area is determined by dividing the protection target area into a plurality of areas using parameters that are set based on the detection accuracy of the primary system and the position information accuracy of the primary system. The communication control device according to (13) above. (15) The control unit is The dynamic protection target area is determined by dividing the protection target area into a plurality of areas using parameters that are set based on fluctuations in the accuracy of the location information due to the surrounding environment. The communication control device according to (14) above. (16) The control unit is The dynamic protection target area is determined by dividing the protection target area into a plurality of areas using parameters that are set based on the arrangement information of the detection unit that detects the primary system. The communication control device according to (13) above. (17) The control unit is Determining the dynamic protected areas of different sizes in the same area The communication control device according to (12) above. (18) The control unit is The dynamic protection area is determined by dividing the protection area into a plurality of areas using parameters that are set based on the accuracy of a positioning function of a wireless station of a wireless system different from the primary system. The communication control device according to (12) above. (19) The control unit is The entire moving area of ​​the wireless station is divided into a plurality of regions, and a protection target area set for a wireless station to communicate in each divided region is determined as the dynamic protection target area. The communication control device according to (12) above. (20) The control unit is By setting the direction of the antenna to be protected at regular intervals within the rotation range of the antenna being used in the wireless station, point protection or area protection is performed. The communication control device according to (3). (twenty one) The control unit is The two-dimensional direction of the antenna to be protected is set by dividing the range of horizontal directions in which the antenna rotates during use by a certain angle. The communication control device according to (20) above. (twenty two) The control unit is The range of horizontal orientation and the range of tilt angles through which the antenna rotates during use are divided by a certain angle to set a three-dimensional direction of the antenna to be protected. The communication control device according to (21) above. (twenty three) The control unit is Predict the rotation range of the antenna in use using the protected area or protected points of the wireless station with which you are communicating The communication control device according to (20) above. (twenty four) The control unit is The angle between the two tangents drawn from the wireless station to the protected area of ​​the wireless station of the communication partner is the range of horizontal orientations in which the antenna in use can rotate. The communication control device according to (23). (twenty five) The control unit is The protection area of ​​the wireless station of the communication partner is projected onto a sphere centered on the wireless station of the primary system, and the area on the projected sphere is set as the range of horizontal orientation and tilt angle that the antenna can take during use. The communication control device according to (23). (26) The control unit is The interval for setting the direction of the antenna to be protected is changed according to the computational power of the aircraft. The communication control device according to (20) above. (27) The control unit is Dynamic point protection or dynamic area protection is performed using a dynamic antenna rotation range obtained by dividing the possible antenna rotation range of the wireless station antenna according to a certain criterion. The communication control device according to (3). (28) The control unit is A plurality of protected antenna directions are set within the dynamic antenna rotation range. The communication control device according to (27) above. (29) The control unit is The dynamic antenna rotation range is set in two dimensions by dividing the range of horizontal antenna orientations that may be utilized by a certain angle. The communication control device according to (27) above. (30) The control unit is The dynamic antenna rotation range in three dimensions is set by dividing the horizontal orientation range and the tilt angle range through which the antenna rotates during use by a constant angle. The communication control device according to (27) above. (31) The control unit is The dynamic antenna rotation range is set using a likely to be used antenna rotation range predicted from information on other wireless stations that may be communication partners. The communication control device according to (27) above. (32) The control unit is The dynamic antenna rotation range is set using a parameter set based on the detection accuracy of the antenna direction when the wireless station is in use. The communication control device according to (27) above. (33) The control unit is The dynamic antenna rotation range is set using a parameter that is set based on the detection accuracy of the antenna direction by a detection unit that detects the antenna direction. The communication control device according to (32). (34) The control unit is Two or more dynamic antenna rotation ranges having different division sizes are set for the antenna rotation range that may be used. The communication control device according to (27) above. (35) Based on the usage pattern and usage location information of the wireless stations of the primary system, one of a plurality of protection methods of the primary system, including a dynamic or static protection method, is selected, and protection of the wireless stations of the primary system is performed based on the selected protection method. Communications control method. (36) The control unit is When the usage pattern switches between planned usage and unplanned usage, a static protection method and a dynamic protection method are switched and implemented. The communication control device according to (2). (37) The control unit is When the use location information is switched between fixed use and mobile use, the point protection and the area protection are switched and implemented. The communication control device according to (3). (38) The control unit is Switching between the point protection and the area protection is performed based on the accuracy of the location information used or the accuracy of interference power from secondary wireless stations predicted from the location information used. The communication control device according to (3). (39) The control unit is When a location where a first wireless station is used is included in an area used by a second wireless station and there is an overlap in the times when the first wireless station and the second wireless station are used, the area protection is performed for the first wireless station using the area used by the second wireless station. The communication control device according to (3). (40) The control unit is While a usage time of a first wireless station and a usage time of a second wireless station overlap, the point protection of the first wireless station is switched to the area protection using the usage area of ​​the second wireless station and is performed. The communication control device according to (3). (41) The control unit is When a first wireless station and a second wireless station use different frequency channels and there is a secondary wireless station whose frequency channel partially overlaps with the two frequency channels, the point protection of the first wireless station is switched to the area protection of the second wireless station. The communication control device according to (3). (42) The control unit is When the use position information is given in terms of horizontal and vertical ranges, An interference calculation for primary protection is performed for each protection point set in the horizontal and vertical directions. The communication control device according to (3). (43) The control unit is A moving range of a first wireless station, which is a mobile station, is calculated based on communication quality when a second wireless station, which is a fixed station, receives a signal from the first wireless station, the calculated moving range is set as a protection target area of ​​the first wireless station, and range prediction of antenna parameters of the second wireless station is performed based on the protection target area. The communication control device according to (1). (44) The control unit is Assuming that a first wireless station is located at a protection point set within a protection area of ​​the first wireless station, a movement range of the second wireless station is predicted based on communication quality when the first wireless station receives a signal from the second wireless station, and a range prediction of antenna parameters of the first wireless station is performed based on the predicted movement range. The communication control device according to (1). (45) The control unit is A moving range of a second wireless station is predicted based on a moving range, a protected area, or a protected point of a first wireless station, protection points are set within the predicted moving range, and range prediction of antenna parameters of the second wireless station is performed based on the moving range, the protected area, or the protected point of the first wireless station for each set protection point. The communication control device according to (1). (46) The control unit is A moving range of the first wireless station is newly calculated for each of the protection points, and then range prediction of the antenna parameters is performed. The communication control device according to (45). (47) The control unit is When the antenna height value of the first wireless station given as a planned use is a range, regardless of whether the protection target of the first wireless station is a protection target point or a protection target area, protection points are set not only in the horizontal direction but also in the altitude direction, and a range prediction of the antenna parameters of the first wireless station is performed for each set protection point based on the protection target area or movement range of the second wireless station. The communication control device according to (1). [Explanation of symbols]

[0489] 1, 2 Communication System 10 Wireless communication devices 20 Base station equipment 30 Terminal Equipment 40 Communication control device 50 Proxy Device 60 File Server 21, 31, 41, 51 Wireless communication section 22, 32, 42, 52 storage section 23, 43, 53 Network Communication Department 24, 34, 44, 54 Control section 33 Input / output section 211, 311 Receiving processing unit 211a Radio receiving unit 211b Demultiplexer 211c demodulator 211d Decoding section 212, 312 Transmission processing unit 212a Encoding section 212b Modulation section 212c Multiplex section 212d Radio transmitter 213, 313 Antenna 241, 441, 541 Acquisition Department 242 Setting section 243 Transmitter 244 Wireless communication control section 442 Judgment section 443 Notification Department 444 Communication Control Unit 542 First transmitter 543 Second Transmission Unit

Claims

1. a control unit that selects one of a plurality of protection methods for the primary system, including dynamic or static protection methods, based on the usage pattern and usage location information of the radio stations of the primary system, and protects the radio stations of the primary system based on the selected protection method. Equipped with The control unit is When the wireless station is in planned use, one of the static protection methods is selected and implemented, and when the wireless station is in unplanned use, one of the dynamic protection methods is selected and implemented. Communications control device.

2. The control unit is Selecting and implementing point protection based on a protection target point of the wireless station determined based on the utilization location information of the wireless station; Selecting and implementing area protection based on a protection target area of ​​the wireless station, which is determined based on the utilization location information of the wireless station. The communication control device according to claim 1 .

3. The control unit is When the protection target point and the protection target area are not included in the usage schedule of the wireless station, and when the protection target point and the protection target area are newly set, the protection target point and the protection target area are predicted. The communication control device according to claim 2.

4. The control unit is The protected point and the protected area are predicted based on usage location information of a second wireless station different from a first wireless station which is a wireless station of the primary system. The communication control device according to claim 3.

5. The control unit is Calculating communication quality when the signal of the first wireless station is received by the second wireless station based on utilization location information of the second wireless station, and predicting the protection target point and the protection target area based on the calculated communication quality. The communication control device according to claim 4.

6. The control unit is Predicting the protected points and the protected area based on antenna information of an antenna used by the second wireless station. The communication control device according to claim 4.

7. The control unit is The protected point and the protected area are predicted based on utilization location information of a third wireless station of a wireless system different from the primary system. The communication control device according to claim 3.

8. The control unit is Based on utilization location information of the third wireless station, a communication quality when a signal of the third wireless station is received by a first wireless station which is a wireless station of the primary system is calculated, and based on the calculated communication quality, utilization location information of the third wireless station is predicted, and the predicted location information is used as the protected point or the protected area. The communication control device according to claim 7.

9. The control unit is Using the utilization location information of the third wireless station as utilization location information of a fourth wireless station which is a wireless station of the primary system, a communication quality of a signal from a fifth wireless station which is a wireless station of the primary system received by the fourth wireless station is calculated, and the protected point and the protected area of ​​the fifth wireless station are predicted based on the calculated communication quality. The communication control device according to claim 8.

10. The control unit is The protection target area is divided according to a certain criterion to determine a plurality of areas as dynamic protection target areas. The communication control device according to claim 2.

11. The control unit is The dynamic protection target area is determined by dividing the protection target area into a plurality of areas using a parameter set based on the utilization detection accuracy of the wireless station. The communication control device according to claim 10.

12. The control unit is The dynamic protection target area is determined by dividing the protection target area into a plurality of areas using parameters that are set based on the detection accuracy of the primary system and the position information accuracy of the primary system. The communication control device according to claim 11.

13. The control unit is The dynamic protection target area is determined by dividing the protection target area into a plurality of areas using parameters that are set based on fluctuations in the accuracy of the location information due to the surrounding environment. The communication control device according to claim 12.

14. The control unit is Determining the dynamic protected areas of different sizes in the same area The communication control device according to claim 10.

15. The control unit is The dynamic protection area is determined by dividing the protection area into a plurality of areas using parameters that are set based on the accuracy of a positioning function of a wireless station of a wireless system different from the primary system. The communication control device according to claim 10.

16. The control unit is The entire moving area of ​​the wireless station is divided into a plurality of regions, and a protection target area set for a wireless station to communicate in each divided region is determined as the dynamic protection target area. The communication control device according to claim 10.

17. The control unit is By setting the direction of the antenna to be protected at regular intervals within the rotation range of the antenna being used in the wireless station, point protection or area protection is performed. The communication control device according to claim 2.

18. The control unit is Dynamic point protection or dynamic area protection is performed using a dynamic antenna rotation range obtained by dividing the possible antenna rotation range of the wireless station antenna according to a certain criterion. The communication control device according to claim 2.

19. selecting one of a plurality of protection methods for the primary system, including a dynamic or static protection method, based on a usage pattern and usage location information of the wireless stations of the primary system, and implementing protection of the wireless stations of the primary system based on the selected protection method; When the wireless station is in planned use, one of the static protection methods is selected and implemented, and when the wireless station is in unplanned use, one of the dynamic protection methods is selected and implemented. Communications control method.

Images