Communication control device and communication control method

Abstract

The communication control device (40) includes a control unit (44). Based on the usage form and usage location information of the wireless station of the main system, the control unit (44) selects a protection method from a plurality of main system protection methods including a dynamic or static protection method, and then performs protection of the wireless station of the main 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 Art

[0002] In the United States, methods of protecting primary systems such as Citizens Broadband Radio Service (CBRS) using frequency sharing technology are established by laws, standards, and the like.

[0003] Furthermore, in Japan, field pickup units (FPUs) operating in the 2.3 GHz band are considered to be the subject of frequency sharing.

[0004] Citation List

[0005] Non-patent literature

[0006] Non-Patent Document 1: WINNF-TS-0247-V1.0.0 CBRS Certified Professional Installer Accreditation Technical Specification

[0007] 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 TechnicalSpecification

[0008] Non-patent document 3: ECC Report 186, Technical and operational requirements for the operation of white space devices under geo-location approach, CEPT ECC, January 2013

[0009] 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

[0010] Non-patent document 5: WINNF-TS-0096-V1.2.0 Signaling Protocols and Procedures for Citizens Broadband Radio Service (CBRS): Spectrum Access System (SAS)-SASInterface Technical Specification

[0011] Non-Patent Document 6: WINNF-TS-0112-V1.4.1 Requirements for Commercial Operation in the US3550-3700MHz Citizens Broadband Radio Service Band

[0012] Non-patent document 7: Information and Communications Council, (93th) Communication Technology Sectional Meeting, Broadcast System Committee Report Summary of the Invention

[0013] Technical issues

[0014] However, in frequency bands where the wireless system of a field pickup unit (FPU) is the primary system, the primary system protection method used may differ even within the same primary system. Therefore, there is a possibility that the primary system protection method used in related art developed in the United States may not support frequency band sharing within Japan.

[0015] Therefore, the present disclosure proposes a communication control device and a communication control method capable of appropriately protecting a primary system from the influence of a secondary system.

[0016] Solution to the problem

[0017] In order to solve the above problems, according to an embodiment of the present disclosure, a communication control device that provides services that require identity authentication processing includes: a control unit, which is configured to select a protection method from a plurality of main system protection methods including dynamic or static protection methods based on the usage form and usage location information of the wireless station of the main system, and protect the wireless station of the main system based on the selected protection method. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an explanatory diagram illustrating an example of allocating interference margins to respective communication devices constituting a subsystem.

[0019] Figure 2 is a diagram illustrating an overview of the primary system protection method according to the present embodiment.

[0020] Figure 3 This is an explanatory diagram illustrating the hierarchical structure in CBRS.

[0021] Figure 4 This is an explanatory diagram illustrating the frequency band of CBRS.

[0022] Figure 5 is a diagram illustrating a configuration example of a communication system according to an embodiment of the present disclosure.

[0023] Figure 6 is a diagram illustrating a model in which communication control devices are distributedly arranged.

[0024] Figure 7 is a diagram illustrating a model in which one communication control device collectively controls a plurality of communication control devices.

[0025] Figure 8 is a diagram illustrating a configuration example of a base station device according to an embodiment of the present disclosure.

[0026] Figure 9 is a diagram illustrating a configuration example of a terminal device according to an embodiment of the present disclosure.

[0027] Figure 10 is a diagram illustrating a configuration example of a communication control device according to an embodiment of the present disclosure.

[0028] Figure 11 is a diagram illustrating a configuration example of a proxy device according to an embodiment of the present disclosure.

[0029] Figure 12 is an explanatory diagram illustrating an example of an interference model envisioned in an embodiment of the present disclosure.

[0030] Figure 13is an explanatory diagram illustrating another example of an interference model envisaged in the embodiment of the present disclosure.

[0031] Figure 14 This is an explanatory diagram for explaining the interference margin simultaneous distribution type primary system protection method.

[0032] Figure 15 is a diagram illustrating a situation where a residual interference margin occurs.

[0033] Figure 16 This is an explanatory diagram for explaining the interference margin iterative distribution type primary system protection method.

[0034] Figure 17 It is a sequence diagram used to illustrate the registration process.

[0035] Figure 18 is a sequence diagram used to illustrate the process of querying available spectrum.

[0036] Figure 19 It is a sequence diagram used to illustrate the frequency use authorization process.

[0037] Figure 20 is a state transition diagram illustrating a radio wave transmission permission state.

[0038] Figure 21 This is a sequence diagram used to illustrate the frequency usage notification process.

[0039] Figure 22 It is a sequence diagram used to illustrate the process of exchanging management information.

[0040] Figure 23 is a flow chart illustrating the process of protecting a host system.

[0041] Figure 24 is a flowchart illustrating an example of a switching (selection) process of a primary system protection method.

[0042] Figure 25 is a diagram illustrating an example of the positional relationship between the usage position of a master wireless station and the usage areas of other wireless stations.

[0043] Figure 26 is a diagram illustrating an example of the relationship between a method of protecting a master wireless station and its usage time, and a method of protecting other wireless stations and their usage time.

[0044] Figure 27 is a diagram illustrating an example of an occupied frequency band of a master wireless station and occupied frequency bands of other wireless stations.

[0045] Figure 28 is a diagram illustrating an example of an antenna installation range.

[0046] Figure 29 is a diagram illustrating an example of a protection target area of ​​a mobile station.

[0047] Figure 30 is a diagram illustrating an example of a protection target area of ​​a mobile station.

[0048] Figure 31 is a diagram illustrating an example of a protection target area of ​​a fixed station.

[0049] Figure 32 is a diagram illustrating an example of a protection target area of ​​a mobile station.

[0050] Figure 33 It is a diagram illustrating an example of predicted protection target points and protection target areas.

[0051] Figure 34 It is a diagram illustrating an example of predicted protection target points and protection target areas.

[0052] Figure 35 is a diagram illustrating an example of a dynamic protection target area for each area obtained by dividing the entire movement area.

[0053] Figure 36 It is a diagram illustrating an example of setting the antenna direction of a two-dimensional protection target.

[0054] Figure 37 It is a diagram illustrating an example of setting the antenna direction of a three-dimensional protected object.

[0055] Figure 38 It is a diagram illustrating an example of setting the antenna direction of a two-dimensional protection target.

[0056] Figure 39 It is a diagram illustrating an example of setting the antenna direction of a three-dimensional protected object.

[0057] Figure 40 This is a diagram illustrating an example of setting a different protected object antenna direction for each protected point.

[0058] Figure 41 is a diagram illustrating a setting example of a two-dimensional dynamic antenna rotation range.

[0059] Figure 42 It is a diagram illustrating an example of setting the three-dimensional dynamic antenna rotation range.

[0060] Figure 43 is a diagram illustrating an overview (No. 1) of range prediction of antenna parameters.

[0061] Figure 44is a diagram illustrating an overview (No. 2) of range prediction of antenna parameters.

[0062] Figure 45 is a diagram illustrating an overview (No. 3) of range prediction of antenna parameters.

[0063] Figure 46 is a diagram illustrating an overview (No. 4) of range prediction of antenna parameters.

[0064] Figure 47 is a diagram illustrating an overview (No. 5) of range predictions of antenna parameters. DETAILED DESCRIPTION

[0065] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. In the following embodiments, the same parts are represented by the same reference numerals, and their repeated description may be omitted.

[0066] In addition, in this specification and the accompanying drawings, in some cases, multiple components with substantially the same functional configuration are distinguished by appending different numbers after the same reference numerals. In one example, multiple components with substantially the same functional configuration, such as communication control devices 401 and 402, are distinguished as needed. However, unless it is necessary to specifically distinguish each of the multiple components with substantially the same functional configuration, they are simply given the same reference numerals. In one example, unless it is not particularly necessary to distinguish between communication control devices 401 and 402, they are simply referred to as communication control device 40.

[0067] Furthermore, the present disclosure will be described in the order of the items shown below.

[0068] 1. Introduction

[0069] 1-1. Control of Wireless Systems for Frequency Sharing

[0070] 1-2. Overview of this embodiment

[0071] 1-3. Frequency and shared terms

[0072] 2. Communication system composition

[0073] 2-1. Overall structure of the communication system

[0074] 2-2. Base Station Equipment Configuration

[0075] 2-3. Terminal Equipment Configuration

[0076] 2-4. Configuration of Communication Control Equipment

[0077] 2-5. Composition of proxy devices

[0078] 3. Interference Model

[0079] 4. Main system protection method

[0080] 4-1. Interference Margin Simultaneous Distribution

[0081] 4-2. Interference Margin Iterative Allocation Formula

[0082] 5. Description of each process

[0083] 5-1. Registration Process

[0084] 5-2. Available spectrum inquiry process

[0085] 5-3. Frequency Use Permit Process

[0086] 5-4. Frequency Usage Notice

[0087] 5-5. Supplements to each process

[0088] 5-6. About each process of terminal equipment

[0089] 5-7. Processes that occur between communication control devices

[0090] 6. Main system protection

[0091] 6-1. Assumed protection model for the main system

[0092] 6-2. Information about the master wireless station

[0093] 6-3. Main system protection

[0094] 6-4. Considering the antenna rotation range for point / area protection

[0095] 7. Modifications

[0096] 7-1. Modifications related to system configuration

[0097] 7-2. Other Modifications

[0098] 8. Conclusion

[0099] 1. Introduction

[0100] In recent years, due to the growth and diversification of content in wireless environments, where various wireless systems coexist, the problem of a shortage of radio resources (frequencies) that can be allocated to wireless systems has emerged. However, all radio frequency bands are already in use by existing wireless systems, making it difficult to allocate new radio resources. Consequently, there is a growing desire to utilize temporally and spatially unused radio waves (white spaces) in existing wireless systems (dynamic spectrum sharing (DSA)) by using cognitive radio technology to generate the necessary radio resources.

[0101] In recent years, the legalization and standardization of the Citizens Broadband Radio Service (CBRS) in the United States, which utilizes frequency sharing technology, has accelerated with the goal of opening the federally used frequency band (3.55-3.70 GHz) to the public. The federally used frequency band (3.55-3.70 GHz) overlaps with the frequency bands considered 3GPP Bands 42 and 43 worldwide. Furthermore, cognitive radio technology not only facilitates dynamic frequency sharing but also helps improve frequency utilization efficiency in wireless systems. For example, ETSI EN 303 387 and IEEE 802.19.1-2014 specify database-based coexistence technologies between wireless systems.

[0102] Furthermore, Japan's 2019 frequency reorganization included the promotion of dynamic frequency sharing in the 2.3 GHz and 26 GHz bands. Broadcasting services, public services, fixed wireless access systems, airport ground surveillance radars, and low-power data communication systems are already operating in these bands, and there is a possibility that these systems will become subject to frequency sharing.

[0103] <1-1. Control of Wireless System for Frequency Sharing>

[0104] Typically, frequency sharing requires the National Regulatory Agency (NRA) of each country / region to protect the wireless systems of primary users (primary systems) that are licensed or authorized to use the frequency band. Typically, the NRA provides a permissible interference reference value for the primary system, and the wireless systems of secondary users (secondary systems) are required to keep the interference generated by sharing below this permissible interference reference value.

[0105] To achieve frequency sharing, for example, a communication control device (e.g., a frequency management database) controls the communication of the secondary system to prevent fatal interference with the primary system. A communication control device manages, for example, the communication of communication devices. For example, a communication control device is a device (system) for managing radio resources (e.g., frequencies), such as a geographic location database (GLDB) and a spectrum access system (SAS). In this embodiment, the communication control device corresponds to the communication control device 40 described later. Communication control device 40 will be described in detail later.

[0106] Here, a primary system is, for example, a system (e.g., an existing system) that prioritizes the use of radio waves in a predetermined frequency band over other systems, such as a secondary system. In the 2.3 GHz band, the primary system corresponds to the FPU used by broadcasters and the wireless system used in public services. The primary system is not required to avoid or prevent interference with the secondary system. Furthermore, the primary system is protected from interference from the secondary system. In other words, the primary system can use the frequency band regardless of the presence of the secondary system.

[0107] A secondary system is a system that, for example, secondary-uses (e.g., through dynamic frequency sharing) radio waves in the frequency band used by the primary system. This secondary system is required to avoid or prevent interference with the primary system, which has a higher priority. Secondary systems include not only wireless systems operated by licensed operators but also wireless systems freely usable by unlicensed users.

[0108] The primary system and the secondary system may each include multiple communication devices, or may include one communication device. The communication control device allocates the interference allowance to one or more communication devices so that the aggregation of interference (interference aggregation) of the one or more communication devices constituting the secondary system to the primary system does not exceed the interference allowance (also referred to as the interference margin) of the primary system. In this case, the interference allowance may be an interference amount predetermined by the operator of the primary system, a public agency that manages radio waves, or the like. In the following description, the interference margin refers to the interference allowance. In addition, the interference aggregation may be referred to as the aggregated interference power.

[0109] Figure 1 : is an explanatory diagram illustrating an example of allocating interference margins to the respective communication devices constituting the subsystem. Figure 1 In the example, communication system 1 is the primary system and communication system 2 is the secondary system. Communication system 1 includes wireless communication device 101 and the like. In addition, communication system 2 includes base station devices 201, 202, 203 and the like. Note that although Figure 1 In the example of FIG, the communication system 1 includes only one wireless communication device 10, however, the communication system 1 may include a plurality of wireless communication devices 10. Figure 1 In the example of FIG, the communication system 2 includes three base station devices 20, however, the number of base station devices 20 included in the communication system 2 may be less than or greater than three. In addition, the wireless communication devices included in the communication system 2 do not necessarily have to be base station devices. Figure 1 In the example, only one main system is shown ( Figure 1 In the example of communication system 1) and a subsystem ( Figure 1 In the example of the communication system 2), however, a plurality of main systems and a plurality of sub-systems may be provided.

[0110] The wireless communication device 101 and the base station devices 201, 202, and 203 can transmit and receive radio waves. The amount of interference allowed by the wireless communication device 101 is I accept In addition, the interference amounts caused by base station devices 201, 202 and 203 to the predetermined protection points of communication system 1 (primary system) are interference amounts I1, I2 and I3 respectively. Here, the protection point is an interference calculation reference point for protecting communication system 1.

[0111] The communication control device sets the interference margin I acceptis distributed to a plurality of base station devices 20 so that the aggregation of interference to a predetermined protection point of the communication system 1 ( Figure 1 The received interference amount (I1+I2+I3) shown in the diagram does not exceed the interference margin I accept For example, the communication control device sets the interference margin I accept distributed to each base station device 20 so that each of the interference amounts I1, I2, and I3 is I accept / 3. Alternatively, the communication control device will accept distributed to each base station device 20 so that each of the interference amounts I1, I2, and I3 is I accept / 3 or less. Note that the method of allocating the interference margin is not limited to this example.

[0112] The communication control device calculates the maximum transmission power allowed for each base station device 20 (hereinafter referred to as the maximum allowed transmission power) based on the allocated interference amount (hereinafter referred to as the allocated interference amount). For example, the communication control device calculates the maximum allowed transmission power of each base station device 20 by reverse calculation from the allocated interference amount based on propagation loss, antenna gain, etc. The communication control device then notifies each base station device 20 of information about the calculated maximum allowed transmission power.

[0113] <1-2. Overview of this embodiment>

[0114] In primary system protection in related art such as CBRS in the United States, a primary system protection method for each primary system is defined by laws, standards, and the like.

[0115] Meanwhile, while wireless systems such as FPUs are considered eligible for frequency sharing in Japan, even within the same primary system, the presence or absence of movement and usage plans can vary depending on the usage scenario and wireless station type. Consequently, the primary system protection method to be used varies depending on each usage scenario and wireless station type. Related art primary system protection methods lack criteria for selecting a primary system protection method, making them incapable of supporting frequency sharing within Japan.

[0116] Furthermore, the related art assumes only limited situations for primary system protection. For example, it assumes situations where a parameter related to the antenna rotation range of a protected wireless station is given as a value, and where the primary system needs to be protected even if the antenna of a federated incumbent system is pointed in any direction.

[0117] In such situations, a host system such as an FPU assumes that the antenna rotates during planned use, and its parameters fluctuate. Alternatively, parameters related to antenna rotation may change whenever the wireless station is used for unplanned purposes. Consequently, it is necessary to implement host system protection that takes into account the antenna's rotation range during use and the antenna's orientation during emergency use. However, related art host protection systems do not take this into account.

[0118] The communication control device of the present disclosure selects a protection method from among multiple primary system protection methods, including dynamic and static protection methods, based on the usage patterns and usage location information of the primary system wireless stations. The communication control device of the present disclosure then protects the primary system wireless stations based on the selected protection method. Figure 2 is a diagram illustrating an overview of the primary system protection method according to the present embodiment.

[0119] like Figure 2 As shown in the diagram, the communication control device of the present disclosure considers whether the form of use is planned use or unplanned use, as well as the use location information of the wireless station of the main system. Then, in the case where the form of use is planned use, the communication control device of the present disclosure selects static point protection or static area protection as a static protection method as the protection method for the wireless station of the main system. Then, the communication control device of the present disclosure protects the main system based on the selected static point protection or static area protection. On the other hand, in the case where the form of use is unplanned use, the communication control device of the present disclosure selects dynamic point protection or dynamic area protection as a dynamic protection method as the method for protecting the wireless station of the main system. Then, the communication control device of the present disclosure protects the main system based on the selected dynamic point protection or dynamic area protection.

[0120] In this manner, the communication control device of the present disclosure enables the primary system to be appropriately protected from the secondary system.

[0121] <1-3. Frequency and Shared Terms>

[0122] Note that 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. Below, this embodiment will be described using the CBRS, which is legally mandated by the Federal Communications Commission (FCC) in the United States, as an example. Note that communication systems 1 and 2 in this embodiment are not limited to CBRS.

[0123] Figure 3 This is a diagram illustrating the hierarchical structure in CBRS. Figure 3As shown in the diagram, each user in the frequency band is classified into one of three groups. Each group is called a "tier". In each of the three groups, a hierarchical structure including an existing tier (incumbent tier), a priority access tier (priority access tier) and a general authorized access tier (general authorized access tier) is defined. In the hierarchy, the priority access tier (priority access tier) is located above the general authorized access tier (general authorized access tier), and the existing tier (incumbent tier) is located above the priority access tier. In the CBRS as an example, the system located in the existing tier (incumbent system) is the primary system, and the system located in the general authorized access tier and the system located in the priority access tier are secondary systems.

[0124] The incumbent tier is a group of existing users sharing the frequency band. In CBRS, the Department of Defense (DOD), fixed satellite operators, and new conditionally applied excluded radio broadband licensees (Grandfathered Wireless Broadband Licenses (GWBLs)) are identified as incumbent users. The incumbent tier is not required to avoid or prevent interference with the lower priority priority access tier and general authorized access (GAA) tier. In addition, the incumbent tier is protected from interference from the priority access tier and GAA tier. In other words, users in the incumbent tier can use the frequency band without regard to the presence of other groups.

[0125] The priority access layer (priority access layer) is a group of users with a license called a priority access license (PAL). Although the priority access layer is required to avoid or prevent interference with the "incumbent layer" with a higher priority than the "priority access layer", it is not required to avoid or prevent interference with the "GAA layer" with a lower priority. In addition, although the "priority access layer" is not protected from interference with the "incumbent layer" with a higher priority, it is protected from interference with the "GAA layer" with a lower priority. The general authorized access layer (GAA layer) is a group of all other users that do not belong to the "incumbent layer" and "priority access layer" above. The general authorized access layer (GAA layer) is required to avoid or prevent interference with the "incumbent layer" and "priority access layer" with a higher priority. In addition, the "GAA layer" is not protected from interference with the "incumbent layer" and "priority access layer" with a higher priority. In other words, the "GAA layer" is a "layer" that is legally required to utilize frequencies opportunistically.

[0126] Note that the hierarchical structure is not limited to these definitions. Although CBRS is generally referred to as a 3-layer structure, CBRS can have a 2-layer structure. Typical examples are 2-layer structures such as Licensed Shared Access (LSA) and Television Band White Space (TVWS). In LSA, a structure equivalent to the combination of the "incumbent layer" and the "priority access layer" is adopted. In addition, in TVWS, a structure equivalent to the combination of the "incumbent layer" and the "GAA layer" is adopted. In addition, there may be 4 or more layers. Specifically, for example, the middle layer corresponding to the "priority access layer" can be further prioritized. In addition, for example, the "GAA layer" can be prioritized in the same way.

[0127] Figure 4 This is an illustration of the frequency bands of CBRS. Taking the above-mentioned CBRS as an example, the primary system is a military radar system, an existing wireless system (grandfathered wireless system) or a fixed satellite service (space to earth). Here, the military radar system is generally a shipborne radar. In addition, the secondary system is a wireless network system including base stations and terminals called Citizen Broadband Radio Service Devices (CBSD) and End User Devices (EUD). There are also priorities in the secondary system, which define the priority access license (PAL) under which shared frequency bands can be licensed and the general authorized access (GAA) which is equivalent to not requiring a license. Figure 4 Layer 1 (Layer 1) shown in the diagram corresponds to Figure 3 In addition, Figure 4 Layer 2 (Layer 2) shown in the diagram corresponds to Figure 3 In addition, Figure 4 Layer 3 (Layer 3) shown in the diagram corresponds to Figure 3 The general authorization access layer is shown in the figure.

[0128] Note that the main system (communication system 1) of this embodiment is not limited to Figure 4 . Other types of wireless systems may be used as the main system (communication system 1). For example, other wireless systems may be set as the main system according to the country, region, and frequency band to which they are applied. For example, the main system may be a television broadcasting system such as a terrestrial digital video broadcasting (DVB-T) system. In addition, the main system may be a wireless system called a fixed system (FS). In addition, frequency sharing may be performed in other frequency bands. For example, typical examples of the main system include LSA and television band white space (TVWS). In addition, the main system may be a cellular communication system such as long term evolution (LTE) and new radio (NR). In addition, the main system may be an aviation wireless system such as an aeronautical radio navigation service (ARNS). Of course, the main system is not limited to the above-mentioned wireless systems and may be other types of wireless systems.

[0129] In addition, the idle radio waves (white space) to be used by the communication system 2 are not limited to the frequency band of the federal use frequency band (3.55-3.70 GHz). The communication system 2 can secondary use a frequency band different from the federal use frequency band (3.55-3.70 GHz). For example, if the main system (communication system 1) is a television broadcasting system, the communication system 2 can be a system that secondary uses TV white space. Here, TV white space refers to a frequency band that is not used by the television broadcasting system among the frequency channels allocated to the television broadcasting system (main system). In this case, TV white space can be a channel that is not used by the region.

[0130] Furthermore, the relationship between communication system 1 and communication system 2 is not limited to a frequency sharing relationship in which communication system 1 is the primary system and communication system 2 is the secondary system. The relationship between communication system 1 and communication system 2 may be a network coexistence relationship between the same or different wireless systems using the same frequency.

[0131] Typically, in frequency sharing, the existing system using the target frequency band is referred to as the primary system, and the system of the secondary user is referred to as the secondary system. However, in the case of applying the present embodiment to an environment other than a frequency sharing environment, these (primary system and secondary system) may be replaced with systems with other terms. For example, a macro cell in a HetNet may be a primary system, and a small cell or a relay station may be a secondary system. In addition, a base station may be a primary system, and a relay UE or vehicle UE implementing D2D or V2X that exists within its coverage area may be a secondary system. The base station is not limited to a fixed base station and may be a portable / mobile base station. In this 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.

[0132] The term "frequency" in the following description may be replaced with other terms. For example, the term "frequency" may be replaced with terms such as "resource," "resource block," "resource element," "channel," "component carrier," "carrier," and "subcarrier," or terms with similar meanings. Note that frequency is a type of radio resource. "Radio resource" may also be referred to as "frequency resource."

[0133] <<2. Communication System Configuration>>

[0134] The following describes communication system 2 according to this embodiment. Communication system 2 is a wireless communication system that performs wireless communications by secondary use of the frequency band used by communication system 1 (first wireless system). For example, communication system 2 dynamically shares part or all of the frequency band allocated to communication system 1. Communication system 2 provides wireless services to users or devices owned by users using a predetermined radio access technology.

[0135] Here, the communication system 2 may be a cellular communication system such as Wideband Code Division Multiple Access (W-CDMA), Code Division Multiple Access 2000 (CDMA2000), LTE, and NR. In the following description, it is assumed that "LTE" includes LTE-Advanced (LTE-A), LTE-Advanced Pro (LTE-A Pro), and Evolved Universal Terrestrial Radio Access (EUTRA). In addition, NR includes New Radio Access Technology (NRAT) and Further EUTRA (FEUTRA). 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 local area network (LAN) system, a television broadcasting system, an aeronautical wireless system, or a space wireless communication system.

[0136] In this embodiment, the communication system 1 is the primary system and the communication system 2 is the secondary system. As described above, a plurality of communication systems 1 and a plurality of communication systems 2 may be provided. Note that although Figure 1 In the example, the communication system 1 includes a wireless communication device 10 ( Figure 1 1 ), but the communication system 1 may include a plurality of wireless communication devices 10. The configuration of the wireless communication device 10 may be the same as that of the base station device 20 or the terminal device 30 to be described later.

[0137] <2-1. Overall Structure of Communication System>

[0138] The communication system 2 generally includes the following entities.

[0139] Communication equipment (e.g., base station equipment or proxy equipment)

[0140] terminal equipment

[0141] Communication control equipment

[0142] Note that although in the following description, the entity acting as a communication device is envisioned as a base station device 20 and / or a proxy device 50, the entity acting as a communication device is not limited to the base station device 20 and the proxy device 50, and may be other communication devices (for example, a terminal device 30 and a communication control device 40).

[0143] Figure 5 The figure illustrates an example of the configuration 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 an agent device 50. The communication system 2 provides wireless services to users or devices owned by users by cooperating with the respective devices (e.g., communication devices such as wireless communication devices). A wireless communication device is a device having a wireless communication function. Figure 5In the example, corresponds to the base station device 20 and the terminal device 30.

[0144] Note that the communication control device 40 and the proxy device 50 may have wireless communication capabilities. In this case, the communication control device 40 and the proxy device 50 may also be considered wireless communication devices. In the following description, wireless communication devices may be simply referred to as communication devices. Note that communication devices are not limited to wireless communication devices. For example, devices that do not have wireless communication capabilities and are only capable of wired communication may also be considered communication devices.

[0145] The communication system 2 may include a plurality of base station devices 20, a plurality of terminal devices 30, a plurality of communication control devices 40, and a plurality of proxy devices 50. Figure 5 In the example shown in FIG, communication system 1 includes base station devices 201, 202, 203, 204, 205, etc. as base station devices 20. Furthermore, communication system 2 includes terminal devices 301, 302, 303, 304, etc. as terminal devices 30. Furthermore, communication system 1 includes communication control devices 401 and 402 as communication control devices 40.

[0146] Note that in the following description, wireless communication devices may be referred to as wireless systems. For example, wireless communication device 10 and each of base station devices 201-205 constitute a wireless system. Furthermore, each of terminal devices 301-304 constitutes a wireless system. Note that although communication system 1 is referred to as the first wireless system in the following description, each of the one or more communication devices 10 included in communication system 1 may be considered the first wireless system. Furthermore, although each of the one or more base station devices 20 included in communication system 2 is referred to as the second wireless system in the following description, communication system 2 itself may be considered the second wireless system, or each of the one or more terminal devices 30 included in communication system 2 may be considered the second wireless system. If communication control device 40 and proxy device 50 have wireless communication capabilities, each communication control device 40 or each proxy device 50 may be considered the second wireless system.

[0147] Note that a wireless system can be a system that includes multiple communication devices, each of which includes at least one wireless communication device. For example, a system that includes one or more base station devices 20 and one or more terminal devices 30 under the base station devices can be considered a wireless system. In addition, each of communication system 1 and communication system 2 can be considered a wireless system. In the following description, a communication system that includes multiple communication devices (including at least one wireless communication device) can be referred to as a wireless communication system, or can be simply referred to as a communication system. Note that a system that includes multiple communication devices (including at least one wireless communication device) can be considered a first wireless system or a second wireless system.

[0148] [Base station equipment]

[0149] 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 and 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 corresponding to a wireless base station (base station, node B, eNB, gNB, etc.) or a radio access point. The base station device 20 can be a wireless relay station. The base station device 20 can be a base station device on the road, such as a roadside unit (RSU). In addition, the base station device 20 can be an optical fiber system called a remote radio head (RRH). In addition, the base station device 20 can be a receiving station of a field pickup unit (FPU). In this embodiment, the base station of the wireless communication system can be referred to as a base station device. Note that the radio access technology used by the base station device 20 can be a cellular communication technology or a wireless LAN technology. In addition, the radio access technology used by the base station device 20 is not limited to these and can be other radio access technologies.

[0150] Base station device 20 does not necessarily need to be stationary and can be installed on a mobile object such as a car. Furthermore, base station device 20 does not necessarily need to be located on the ground and can be configured to function as a communication device for an object in the air or space (such as an airplane, drone, helicopter, or satellite) or an object at sea or underwater (such as a ship or submarine). In this case, base station device 20 can wirelessly communicate with other fixed communication devices.

[0151] Base station device 20 may have a large coverage area, such as a macro cell, or a small coverage area, such as a pico cell. Of course, base station device 20 may have an extremely small coverage area, such as a femto cell. Furthermore, if base station device 20 has beamforming capabilities, it may form a cell or service area for each beam.

[0152] Base station device 20 may be utilized, operated, and / or managed by various entities. For example, it is conceivable that base station device 20 may be a mobile network operator (MNO), a mobile virtual network operator (MVNO), a mobile virtual network provider (MVNE), a neutral host network (NHN) operator, a broadcaster, a business, an educational institution (such as an educational institution and a local government education committee), a real estate manager (such as a building or apartment), an individual, etc. Of course, the entities that utilize, operate, and / or manage base station device 20 are not limited to these.

[0153] Base station equipment 20 may be installed and / or operated by a single operator or by an individual. Of course, the entity that installs and operates base station equipment 20 is not limited to this. For example, base station equipment 20 may be collaboratively installed and operated by multiple operators or individuals. Furthermore, base station equipment 20 may be a shared facility used by multiple operators or individuals. In this case, the facility may be installed and / or operated by a third party distinct from the user.

[0154] The base station equipment 20, which is operated by an operator, is generally connected to the Internet via a core network. Furthermore, the base station equipment 20 is operated, managed, and maintained through a function called operations, administration, and maintenance (OA&M). Note that in the communication system 2, for example, a network manager may exist that integrally controls the base station equipment 20 in the network.

[0155] Note that the concept of a base station includes an access point and a wireless relay station (also referred to as a relay device). In addition, the concept of a base station includes not only a structure having the function of a base station, but also equipment installed in the structure. Examples of structures include buildings, such as office buildings, houses, towers, station facilities, airport facilities, port facilities, and stadiums. In addition, the concept of a structure includes not only buildings, but also non-building structures such as tunnels, bridges, dams, walls, and steel columns, or facilities such as cranes, doors, and windmills. In addition, the concept of a structure includes not only structures on the ground (on land in a narrow sense) or underground, but also structures on the water such as docks and artificial floating islands (super-large floating structures), or structures in the water such as ocean observation facilities.

[0156] In addition, the base station can be a base station (mobile station) configured to be movable. In this case, the base station (mobile station) can be a wireless communication device installed in a mobile body, or it can be the mobile body itself. In addition, the mobile body can be a mobile body that moves on the ground (land in a narrow sense) (for example, vehicles such as cars, buses, trucks, trains and linear motor traction locomotives), or a mobile body that moves underground (for example, in a tunnel) (for example, a subway). Of course, the mobile body can be a mobile terminal such as a smart phone. In addition, the mobile body can be a mobile body that moves on the water (for example, ships such as passenger ships, cargo ships and hovercrafts), or a mobile body that moves underwater (for example, submersible ships such as submersibles, submarines and unmanned submarines). In addition, the mobile body can be a mobile body that moves in the atmosphere (for example, aircraft such as airplanes, airships and drones), or a space mobile body that moves outside the atmosphere (for example, artificial celestial bodies such as artificial satellites, spacecraft, space stations and space probes).

[0157] [Terminal device]

[0158] The terminal device 30 is a communication device with communication capabilities. It is typically a communication device such as a smartphone. It can be a user terminal such as a mobile phone, a smart device (smartphone or tablet), a wearable terminal, a personal digital assistant (PDA), or a personal computer. Furthermore, the terminal device 30 can be a motorcycle equipped with communication equipment such as an FPU, a mobile relay vehicle, or the like. The terminal device 30 can be referred to as user equipment, user terminal, user station, mobile terminal, or mobile station, among others.

[0159] Note that the terminal device 30 does not have to be a terminal device used by a person. The terminal device 30 may be a sensor installed in a machine or building in a factory, as in the so-called machine type communication (MTC). In addition, the terminal device 30 may be a machine-to-machine (M2M) device or an Internet of Things (IoT) device. In addition, the terminal device 30 may be a device with a relay communication function as represented by device-to-device (D2D) and vehicle-to-everything (V2X). In addition, the terminal device 30 may be equipment called user premises equipment (CPE) for wireless backhaul, etc. In addition, the terminal device 30 may be a wireless communication device installed in a mobile body, or may be the mobile body itself.

[0160] Furthermore, the terminal device 30 does not necessarily need to be on the ground, and may be an object in the air or in space, such as an aircraft, a drone, a helicopter, or a satellite, or an object on or in the sea, such as a ship or a submarine.

[0161] [Communication control equipment]

[0162] 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 the wireless communications of the base station device 20. For example, the communication control device 40 determines the communication parameters (also called operating parameters) used by the base station device 20 and issues permissions or instructions to the base station device 20. In this case, the communication control device 40 may be a network manager that integrally controls the wireless devices in the network. Taking ETSI EN 303 387 or IEEE 802.19.1-2014 as an example, the communication control device 40 may be a control device that controls radio wave interference between wireless equipment, such as a spectrum manager / coexistence manager. Furthermore, for example, a registered location security server (RLSS) defined in IEEE 802.11-2016 may also function as the communication control device 40. Furthermore, in a frequency sharing environment, databases (database servers, devices, systems) such as a geographic location database (GLDB) and a spectrum access system (SAS) may also function as the communication control device 40. Basically, the control target of the communication control device 40 is the base station device, however, the communication control device 40 can control the terminal device 30 controlled by the base station device 20 .

[0163] Note that a plurality of communication control devices 40 may exist in one communication system 2 . Figure 6 is a diagram illustrating a model in which the communication control apparatuses 40 are distributedly arranged. In this case, a plurality of communication control apparatuses 40 (in Figure 6 In the case of the example, the communication control device 401 and the communication control device 402 mutually exchange information on the managed base station device 20, and allocate necessary frequencies or perform calculations for interference control.

[0164] Furthermore, the communication control device 40 may be a master-slave device. Figure 7 1 is a diagram illustrating a model in which one communication control device centrally controls a plurality of communication control devices (so-called master-slave model). Figure 7 In the example, communication control device 403 is the master communication control device, and communication control devices 404 and 405 are slave communication control devices. In such a system, the master communication control device can control multiple slave communication control devices to centrally make decisions. Furthermore, for load distribution (load balancing), the master communication control device can delegate or relinquish decision-making authority to each slave communication control device.

[0165] Note that the communication control device 40 can also obtain necessary information from entities other than the base station device 20, the terminal device 30, and the proxy device 50 to complete its tasks. Specifically, the communication control device 40 can obtain information required for protection, such as the location information of the main system, from a database (regulatory database) managed and operated by a national or regional radio management agency. An example of a regulatory database is the Universal License System (ULS) operated by the Federal Communications Commission of the United States. Other examples of information required for protection may include, for example, out-of-band emission limits (OOBE), adjacent channel leakage ratio (ACLR), adjacent channel selectivity, fading margin, and / or protection ratio (PR). For these examples, it is preferred to use numerical values ​​when these numerical values ​​are fixedly given by law.

[0166] Furthermore, the communication control device 40 can obtain detailed specifications and usage schedule information for the wireless stations (master wireless stations) of the master system from a wireless station specifications database and a wireless station usage schedule database. The wireless station specifications database, into which the specifications of the master wireless station are entered, and the wireless station usage schedule database, into which the usage schedule information is entered, may be managed and operated by a broadcaster, public service agency, or the like, acting as the operator of the master system. Furthermore, in addition to the broadcaster, public service agency, or the like, acting as the operator of the master system, the wireless station specifications database and the wireless station usage schedule database may also be managed and operated by the operator of the communication control device, an administrative agency, a third-party organization, or the like. The operator of the master system stores various information about the master wireless stations before they are actually used. Furthermore, this database can operate as a single database. Furthermore, obtaining various information does not always require access to a database; for example, the operator of the master system can directly input information into the communication control device 40 using HTTP request / response methods.

[0167] Furthermore, as another example, it is conceivable that the communication control device 40 obtains radio wave sensing information from a radio wave sensing system installed and operated to detect radio waves in the primary system. As a specific example, the communication control device 40 can obtain radio wave detection information of the primary system from a radio wave sensing system such as the Environmental Sensing Capability (ESC) in the United States' CBRS. Furthermore, if the communication device or terminal has a sensing function, the communication control device 40 can obtain radio wave detection information of the primary system from the communication device or terminal.

[0168] Furthermore, the operator of the host system can directly notify the communication control device 40 of the use of the wireless station without performing radio wave sensing. In this case, the operator of the host system can provide notification of use by writing information such as the time and location of use into a database such as a wireless station use schedule database. Furthermore, it is also conceivable that the operator of the host system directly inputs to the communication control device 40 using HTTP request / response or the like.

[0169] [Proxy device]

[0170] The proxy device 50 (proxy system) is a device that communicates with the communication control device 40 as an agent (representative) of one or more communication devices (for example, the base station device 20). The proxy device 50 is also a type of communication device. The proxy device 50 may be a domain proxy (DP) defined in non-patent document 2, etc. Here, DP refers to an entity that communicates with the SAS on behalf of each of a plurality of CBSDs or a network including a plurality of CBSDs. Note that the proxy device 50 is not limited to the DP defined in non-patent document 2, as long as the proxy device has the function of communicating with the communication control device 40 as an agent (representative) of one or more communication devices. The network manager that integrally controls the base station devices 20 in the network can be regarded as the proxy device 50.

[0171] The interface between entities can be wired or wireless. For example, as an interface between a communication control device and a communication device, not only a wired line but also a wireless interface that does not rely on frequency sharing can be used. In this case, the wireless interface can be, for example, a wireless interface provided by a mobile communication company via a licensed frequency band, a wireless interface using an existing unlicensed frequency band (for example, a wireless interface using Wi-Fi communication), etc.

[0172] Next, the configuration of each device constituting the communication system 2 will be described in detail.

[0173] <2-2. Configuration of Base Station Equipment>

[0174] First, the configuration of base station apparatus 20 will be explained. Figure 8: is a diagram illustrating an example of the configuration of a 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 according to 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 may be a base station device installed in a mobile body that moves 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 the ground (land in a narrow sense), but also to the ground in a broad sense including underground, above water, and in water. The base station device 20 is a type of communication device.

[0175] Note that base station device 20 is not limited to a ground station device. For example, base station device 20 may be a base station device (non-ground station device) that moves or floats in the air or in space. In this case, base station device 20 may be an aircraft station device or a satellite station device.

[0176] An aircraft station can be equipment carried on an aircraft, etc., or it can be the aircraft itself. The concept of aircraft includes not only heavy aircraft such as airplanes and gliders, but also light aircraft such as hot air balloons and airships. The concept of aircraft also includes rotary-wing aircraft such as helicopters and gyroplanes. Note that aircraft station equipment (or the aircraft carrying aircraft station equipment) can be a manned aircraft or an unmanned aircraft such as a drone.

[0177] The satellite station device may be a device carried on a space mobile object such as an artificial satellite, or may be the space mobile object itself. The satellite serving as the satellite station device may be any of a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, and a highly elliptical orbit (HEO) satellite. It is understood that the satellite station device may be a device carried on a low earth orbit satellite, a medium earth orbit satellite, a geosynchronous orbit satellite, or a highly elliptical orbit satellite.

[0178] In addition, the base station device 20 can be a relay station device. In one example, the relay station device is an aircraft station or an earth station. The relay station device can be considered as a type of the above-mentioned relay device. An aircraft station is a wireless station installed on the ground or installed on a mobile object moving on the ground to communicate with an aircraft station device. In addition, an earth station is a wireless station located on the earth (including in the air) to communicate with a satellite station device. The earth station can be a large earth station or a small earth station such as a very small aperture terminal (VSAT). In addition, the earth station can be a VSAT control earth station (also known as a master station or a hub station) or a VSAT earth station (also known as a slave station). In addition, the earth station can be a wireless station installed in a mobile object moving on the ground. In one example, an example of an earth station carried on a ship includes a shipborne earth station (ESV). In addition, the earth station can include an aircraft earth station installed in an aircraft (including a helicopter) and communicating with a satellite station. In addition, the earth station can include an aeronautical earth station installed in a mobile object moving on the ground and communicating with the aircraft earth station via a satellite station. Additionally, the relay station device may be a portable mobile station that communicates with a satellite station or an aircraft station.

[0179] 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. Figure 8 The configuration shown in the diagram is a functional configuration, and its hardware configuration may be different from that shown in the diagram. In addition, the functions of the base station device 20 can be distributed and implemented in multiple physically separated devices.

[0180] The wireless communication unit 21 is a wireless communication interface for wireless communication with other communication devices (e.g., the terminal device 30, the communication control device 40, the 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 can support multiple radio access schemes. For example, the wireless communication unit 21 can support both NR and LTE. The wireless communication unit 21 can also support other cellular communication schemes such as W-CDMA and CDMA2000. In addition to cellular communication schemes, the wireless communication unit 21 can also support wireless LAN communication schemes. Of course, the wireless communication unit 21 can only support one radio access scheme.

[0181] 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 multiple reception processing units 211, multiple transmission processing units 212, and multiple antennas 213. Furthermore, if the wireless communication unit 21 supports multiple radio access schemes, the various components of the wireless communication unit 21 may be configured to separately support each radio access scheme. For example, if the base station device 20 is compatible with both NR and LTE, the reception processing unit 211 and the transmission processing unit 212 may be configured separately for NR and LTE.

[0182] The reception processing unit 211 processes an uplink signal received via the antenna 213. The reception processing unit 211 includes a wireless receiver 211a, a demultiplexer 211b, a demodulator 211c, and a decoder 211d.

[0183] Wireless receiver 211a downconverts the uplink signal, removes unnecessary frequency components, controls the amplification level, performs orthogonal demodulation, converts it into a digital signal, removes the guard interval, and uses a fast Fourier transform to extract the frequency domain signal. For example, assume that the radio access scheme of base station device 20 is a cellular communication scheme such as LTE. In this case, demultiplexer 211b separates the signal output from wireless receiver 211a into an uplink channel such as the Physical Uplink Shared Channel (PUSCH) or the Physical Uplink Control Channel (PUCCH) and an uplink reference signal. Demodulator 211c demodulates the received signal by applying a modulation scheme such as binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK) to the modulation symbols of the uplink channel. The modulation scheme used by demodulator 211c can be 16-bit quadrature amplitude modulation (QAM), 64-QAM, or 256-QAM. Decoder 211d decodes the coded bits of the demodulated uplink channel. The decoded uplink data and uplink control information are output to the control unit 24 .

[0184] The transmission processing unit 212 performs transmission processing of downlink control information and downlink data. The transmission processing unit 212 includes an encoder 212a, a modulator 212b, a multiplexer 212c, and a wireless transmission unit 212d.

[0185] Encoder 212a encodes the downlink control information and downlink data input from control unit 24 using coding schemes such as block coding, convolutional coding, and turbo coding. Modulator 212b modulates the coded bits output from encoder 212a using a predetermined modulation scheme such as BPSK, QPSK, 16QAM, 64QAM, and 256QAM. Multiplexer 212c multiplexes the modulation symbols and downlink reference signals for each channel and arranges the result in predetermined resource elements. Wireless transmission unit 212d performs various signal processing on the signal from multiplexer 212c. In one example, wireless transmission unit 212d performs conversion to the time domain using fast Fourier transform, adds a guard interval, generates a baseband digital signal, converts it to an analog signal, performs quadrature modulation, up-converts, removes unnecessary frequency components, and performs power amplification. The signal generated by transmission processing unit 212 is transmitted via antenna 213.

[0186] The storage unit 22 is a data read / write storage device such as DRAM, SRAM, flash memory, and hard disk. The storage unit 22 functions as a storage device of the base station device 20. The storage unit 22 stores information such as desired transmission power, operating parameters, and owned resource information.

[0187] The desired transmission power information is information on transmission power that the base station apparatus 20 requests from the communication control apparatus 40 as information on transmission power required to transmit radio waves.

[0188] The operating parameter is information (e.g., setting information) related to the radio wave transmission operation of the base station device 20. For example, the operating parameter is information about the maximum value of the transmission power (maximum allowed transmission power) allowed for the base station device 20. Of course, the operating parameter is not limited to information about the maximum allowed transmission power.

[0189] Furthermore, the owned resource information is information related to the radio resources owned by base station apparatus 20. For example, the owned resource information is information regarding the radio resources currently available to base station apparatus 20. For example, the owned resource information is information regarding the amount of interference margin owned, allocated from communication control apparatus 40 to base station apparatus 20. The information regarding the amount of ownership may be resource block-based information, as will be described later. In other words, the owned resource information may be information regarding the resource blocks owned by base station apparatus 20 (e.g., the amount of resource blocks owned).

[0190] 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 local area network (LAN) interface such as a network interface card (NIC). The network communication unit 23 may be a Universal Serial Bus (USB) interface including a USB host controller, a USB port, or the like. Furthermore, the network communication unit 23 may be a wired interface or a wireless interface. The network communication unit 23 functions as the network communication device of the base station device 20. The network communication unit 23 communicates with other devices under the control of the control unit 24.

[0191] The control unit 24 is a controller that controls the various components of the base station device 20. The control unit 24 is composed of a processor such as a central processing unit (CPU) and a microprocessor (MPU). In one example, the control unit 24 implements its functions by executing various programs stored in a storage device within the base station device 20 using a random access memory (RAM) or the like as a work area. In addition, the control unit 24 can be configured as an integrated circuit such as an application-specific integrated circuit (ASIC) and a field-programmable gate array (FPGA). Each of the CPU, MPU, ASIC, and FPGA can be considered a controller.

[0192] like Figure 8 As shown in the diagram, the control unit 24 includes an acquisition unit 241, a setting unit 242, a sending unit 243 and a wireless communication control unit 244. The various blocks (acquisition unit 241 to wireless communication control unit 244) that constitute the control unit 24 are functional blocks that indicate the functions of the control unit 24. These functional blocks can be software blocks or hardware blocks. For example, each of the above functional blocks can be a software module implemented by software (including microprograms), or can be a circuit block on a semiconductor chip (bare die). Of course, each functional block can be a processor or an integrated circuit. The method of constructing the functional blocks is arbitrary. Note that the control unit 24 can be composed of functional units different from the above functional blocks.

[0193] Each block constituting the control unit 24 (the acquisition unit 241 to the wireless communication control unit 244 ) can operate, for example, as follows.

[0194] For example, the transmitting unit 243 requests a grant from the communication control device 40 and transmits information related to the granted usage mode to the communication control device 40. The communication control device 40 includes an acquiring unit that acquires information related to the granted usage mode of the radio waves used by the communication device using the radio waves in the frequency band used for the first wireless communication, and a processing unit that performs processing related to the grant based on the information related to the granted usage mode. Then, the wireless communication control unit 244 controls the wireless communication unit 21 based on the grant given from the communication control device 40 in response to the request for the grant.

[0195] The operations of the respective blocks (the acquisition unit 241 to the wireless communication control unit 244 ) constituting the control unit 24 will be described later.

[0196] <2-3. Terminal Equipment Configuration>

[0197] Next, the configuration of the terminal device 30 will be described. Figure 9 This diagram illustrates an example configuration of a terminal device 30 according to an embodiment of the present disclosure. The terminal device 30 is a communication device that wirelessly communicates 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 wireless communication device) includes not only base stations and proxy devices, but also terminal devices. The communication device (or wireless communication device) can be rephrased as a wireless system.

[0198] The terminal device 30 includes a wireless communication unit 31, a storage unit 32, an input / output unit 33, and a control unit 34. Figure 9 The configuration shown in the diagram is a functional configuration, and its hardware configuration may be different from that shown in the diagram. In addition, the functions of the terminal device 30 may be distributed and implemented in multiple physically separated components.

[0199] The wireless communication unit 31 is a wireless communication interface for wireless communication 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 radio access schemes. For example, the wireless communication unit 31 supports both NR and LTE. The wireless communication unit 21 can also support other radio access schemes such as W-CDMA and CDMA2000.

[0200] 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 multiple reception processing units 311, multiple transmission processing units 312, and multiple antennas 313. Furthermore, if the wireless communication unit 31 supports multiple radio access schemes, the various components of the wireless communication unit 31 may be configured to support each radio access scheme separately. For example, the reception processing unit 311 and the transmission processing unit 312 may be configured separately for LTE and NR. The configuration of the reception processing unit 311 and the transmission processing unit 312 is similar to that of the reception processing unit 211 and the transmission processing unit 212 of the base station device 20.

[0201] The storage unit 32 is a data read / write storage device such as DRAM, SRAM, flash memory, and hard disk. The storage unit 32 functions as a storage device of the terminal device 30.

[0202] The input / output unit 33 is a user interface for exchanging information with the user. In one example, the input / output unit 33 is an operating device for the user to perform various operations, such as a keyboard, a mouse, an operating key, and a touch panel. In addition, the input / output unit 33 is a display device such as a liquid crystal display (LCD) and an organic electroluminescent (EL) display. The input / output unit 33 can be an acoustic device such as a speaker and a buzzer. In addition, the input / output unit 33 can be a lighting device such as a light emitting diode (LED) lamp. The input / output unit 33 plays the role of the input / output device (input device, output device, operating device, or notification device) of the terminal device 30.

[0203] The control unit 34 is a controller that controls the various components of the terminal device 30. For example, the control unit 34 is configured by including a processor such as a CPU or an MPU. In one example, the control unit 34 implements its functions by executing various programs stored in a storage device within the terminal device 30 using RAM or the like as a workspace. Furthermore, the control unit 34 can be configured as an integrated circuit such as an ASIC or FPGA. Each of the CPU, MPU, ASIC, and FPGA can be considered a controller.

[0204] <2-4. Configuration of Communication Control Device>

[0205] The communication control device 40 is a device that controls wireless communications of the base station device 20. The communication control device 40 can control wireless communications of the terminal device 30 directly or via the base station device 20. The communication control device 40 may be a network manager that integrally controls wireless devices in the 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 geographic location database (GLDB) or a spectrum access system (SAS).

[0206] Note that if the communication system 2 is a cellular communication system, the communication control device 40 can be a device that constitutes a core network. The core network CN is, for example, an evolved packet core (EPC) or a 5G core network (5GC). If the core network is an EPC, the communication control device 40 can be, for example, a device that functions as a mobility management entity (MME). In addition, if the core network is a 5GC, the communication control device 40 can be, for example, a device that functions as an access and mobility management function (AMF). Note that even in the case where the communication system 2 is a cellular communication system, the communication control device 40 does not necessarily have to be a device that constitutes a core network. For example, the communication control device 40 can be a device that functions as a radio network controller (RNC).

[0207] Furthermore, the communication control device 40 may function as a gateway. In one example, if the core network is an EPC, the communication control device 40 may function as a serving gateway (S-GW) or a fractional data network gateway (P-GW). Furthermore, if the core network is a 5GC, the communication control device 40 may function as a user plane function (UPF). Furthermore, the communication control device 40 is not necessarily a device that constitutes the core network. For example, assuming that the core network is a W-CDMA or CDMA 2000 core network, the communication control device 40 may function as a radio network controller (RNC).

[0208] Furthermore, the communication control device 40 may be a system that controls a plurality of subsystems. In this case, the communication system 2 may be regarded as a system including a plurality of subsystems.

[0209] Figure 10 1 is a diagram illustrating 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. In addition, Figure 10The configuration shown in the diagram is a functional configuration, and its hardware configuration may be different from that shown in the diagram. In addition, the functions of the communication control device 40 can be distributed and implemented in multiple physically separate components. In one example, the communication control device 40 can be composed of multiple server devices.

[0210] The wireless communication unit 41 is a wireless communication interface for wireless communication with other communication devices (e.g., the base station device 20, the terminal device 30, the 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 radio access schemes. For example, the wireless communication unit 31 supports both NR and LTE. The wireless communication unit 31 can also support other radio access schemes 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.

[0211] The storage unit 42 is a data read / write storage device such as a DRAM, SRAM, flash memory, and hard disk. The storage unit 22 functions as a storage device for the base station device 20. The storage unit 22 stores operating parameters for each of the multiple base station devices 20 that constitute the communication system 2. Note that the storage unit 22 may also store owned resource information for each of the multiple base station devices 20 that constitute the communication system 2. As described above, owned resource information is information related to the radio resources owned by the base station device 20. Note that the communication control device 40 may store this information in the file server 60.

[0212] The network communication unit 43 is a communication interface for communicating with other devices (e.g., 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 local area network (LAN) interface such as a network interface card (NIC). Alternatively, the network communication unit 43 may be a USB interface including a Universal Serial Bus (USB) host controller, a USB port, or the like. Furthermore, the network communication unit 43 may be a wired interface or a wireless interface. The network communication unit 43 functions as a communication device for 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.

[0213] The control unit 44 is a controller that controls the various components of the communication control device 40. The control unit 44 is configured by including a processor such as a CPU and an MPU. In one example, the control unit 44 implements its functions by executing various programs stored in a storage device within the communication control device 40 using RAM or the like as a workspace. Furthermore, the control unit 44 can be configured as an integrated circuit such as an ASIC or FPGA. Each of the CPU, MPU, ASIC, and FPGA can be considered a controller. For example, the control unit 44 controls operations related to authorization by communicating with the base station device 20, the terminal device 30, and the proxy device 50 via the network communication unit 43.

[0214] like Figure 10 As shown in the diagram, the control unit 44 includes an acquisition unit 441, a determination unit 442, a notification unit 443 and a communication control unit 444. The various blocks (acquisition unit 441 to communication control unit 444) that constitute the control unit 44 are functional blocks that indicate the functions of the control unit 44. These functional blocks can be software blocks or hardware blocks. For example, each of the above functional blocks can be a software module implemented by software (including microprograms), or can be a circuit block on a semiconductor chip (bare die). Of course, each functional block can be a processor or an integrated circuit. The method of constructing the functional blocks is arbitrary. Note that the control unit 44 can be composed of functional units different from the above functional blocks.

[0215] Each block (acquisition unit 441 to communication control unit 444 ) constituting the control unit 44 can operate as follows, for example.

[0216] The acquisition unit 441 is a processing unit that acquires various information in operations related to, for example, grants by communicating with the base station device 20, the terminal device 30, and the proxy device 50. For example, the acquisition unit 441 acquires information on a usage pattern related to a grant for a second wireless system that secondarily uses the frequency band used by the first wireless system.

[0217] 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 the predicted movement area 301 in which the terminal device 30 is predicted to move.

[0218] Determination unit 442 is a processing unit that responds to a request (such as a frequency use permission or frequency use notification) from a second wireless system for secondary use of the frequency band used by the first wireless system, performs frequency use permission processing and area determination processing, and determines whether the second wireless system can secondary use the frequency band (details will be described later). For example, determination unit 442 determines whether 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 acquisition unit 441.

[0219] The notification unit 443 is a processing unit that notifies the terminal device 30 of a response corresponding to the determination result of the determination unit 442 in response to a request (such as a frequency use permission and a frequency use notification) from the second wireless system for secondary use of the frequency band used by the first wireless system (details will be described later). For example, as a response, the notification unit 443 notifies the terminal device 30 of whether the terminal device 30 can perform secondary use of the primary system as determined by the determination unit 442.

[0220] 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 use notification and the like (details will be described later).

[0221] The operations of the respective blocks (acquisition unit 441 to communication control unit 444 ) constituting the control unit 44 will be described later.

[0222] In addition, the control unit 44 functions as a processing unit configured to select a protection method from a plurality of main system protection methods including dynamic or static protection methods based on the usage form and usage location information of the wireless station of the main system, and protect the wireless station of the main system based on the selected protection method.

[0223] For example, the control unit 44 selects a static protection method and performs the static protection method when the wireless station is used for planned use, and selects a dynamic protection method and performs the dynamic protection method when the wireless station is used for unplanned use.

[0224] For example, the control unit 44 selects point protection and performs point protection based on the protection object point of the wireless station determined according to the usage location information of the wireless station, and selects area protection and performs area protection based on the protection object area of ​​the wireless station determined according to the usage location information of the wireless station.

[0225] In addition, when the protection object point and the protection object area are not included in the use schedule of the wireless station, and when the protection object point and the protection object area are reset, the control unit 44 functions as a processing unit for predicting the protection object point and the protection object area.

[0226] For example, the control unit 44 predicts the protection target point and the protection target area based on the use position information of the second wireless station different from the first wireless station which is the wireless station of the master system.

[0227] For example, the control unit 44 calculates the communication quality when the second wireless station receives the signal of the first wireless station based on the use position information of the second wireless station, and predicts the protection target point and the protection target area based on the calculated communication quality.

[0228] For example, the control unit 44 predicts the protection target point and the protection target area based on the antenna information of the antenna to be used at the second wireless station.

[0229] For example, the control unit 44 predicts the protection target point and the protection target area based on the use position information of the third wireless station of the wireless system different from the main system.

[0230] For example, based on the usage location information of the third wireless station, control unit 44 calculates the communication quality when the first wireless station, acting as a wireless station of the primary system, receives the signal from the third wireless station. Based on the calculated communication quality, control unit 44 predicts the usage location information of the third wireless station and uses the predicted location information as a protected point or protected area.

[0231] For example, the control unit 44 uses the usage location information of the third wireless station as the usage location information of the fourth wireless station, which is a wireless station of the master system, to calculate the communication quality when the fourth wireless station receives a signal from the fifth wireless station, which is a wireless station of the master system. Based on the calculated communication quality, the control unit 44 predicts the protection target point and the protection target point of the fifth wireless station.

[0232] For example, the control unit 44 predicts the use position information of the wireless station of the primary system based on the antenna information of the antenna to be used by the third wireless station.

[0233] In addition, the control unit 44 functions as a processing unit configured to determine a plurality of areas obtained by dividing the protection target area according to a certain criterion as dynamic protection target areas.

[0234] For example, the control unit 44 determines a dynamic protection target area obtained by dividing the protection target area into a plurality of areas using parameters set based on the detection accuracy of use of wireless stations.

[0235] For example, the control unit 44 determines a dynamic protection target area obtained by dividing the protection target area into a plurality of areas using parameters set based on the detection accuracy of the main system and the accuracy of the position information of the main system.

[0236] For example, the control unit 44 determines a dynamic protection target area obtained by dividing the protection target area into a plurality of areas using parameters set based on fluctuations in the accuracy of position information caused by the surrounding environment.

[0237] For example, the control unit 44 determines a dynamic protection target area obtained by dividing the protection target area into a plurality of areas using parameters set based on arrangement information of the detection units of the detection master system.

[0238] For example, the control unit 44 determines dynamic protection target areas having different sizes in the same area.

[0239] For example, the control unit 44 determines a dynamic protection target area obtained by dividing the protection target area into a plurality of areas using parameters set based on the accuracy of the positioning function of a wireless system different from the main system.

[0240] For example, the control unit 44 divides the entire movement area of ​​the wireless station into a plurality of areas, and determines the protection target area set for the wireless station as the communication target in each divided area as the dynamic protection target area.

[0241] Furthermore, the control unit 44 functions as a processing unit that determines a protection target point or protection target area by setting the protection target antenna direction at regular intervals within the rotation range of the antenna being used by the wireless station.

[0242] For example, the control unit 44 sets the two-dimensional direction of the antenna to be protected by dividing the horizontal range in which the antenna rotates during use by a certain angle.

[0243] For example, the control unit 44 sets the three-dimensional direction of the antenna to be protected by dividing the horizontal range and the elevation range of the antenna during use into certain angles.

[0244] For example, the control unit 44 predicts the rotation range of the antenna being used by using the protection target area or protection target point of the wireless station serving as the communication partner.

[0245] For example, the control unit 44 sets the angle formed by two tangent lines drawn from the wireless station to the protection target area of ​​the wireless station as the communication partner as the range in the horizontal direction of rotation of the antenna in use.

[0246] For example, the control unit 44 projects the protection target area of ​​the wireless station as the communication partner onto a sphere centered on the wireless station of the primary system, and sets the projection area on the sphere to the horizontal range and elevation angle range that the antenna can obtain during use.

[0247] For example, the control unit 44 changes the interval when setting the direction of the antenna to be protected according to the computing capability of the communication control device.

[0248] In addition, the control unit 44 functions as a processing unit configured to select dynamic point protection or dynamic area protection using a dynamic antenna rotation range obtained by dividing the rotation range that the antenna of the wireless station can take according to a certain criterion.

[0249] For example, the control unit 44 sets a plurality of protection target antenna directions within the dynamic antenna rotation range.

[0250] For example, the control unit 44 divides the available horizontal range into predetermined angles to set a two-dimensional dynamic antenna rotation range.

[0251] For example, the control unit 44 sets a three-dimensional dynamic antenna rotation range by dividing the horizontal range and the elevation range of the antenna during use into certain angles.

[0252] For example, the control unit 44 sets the dynamic antenna rotation range by using the antenna rotation range that can be used, which is predicted from information on other wireless stations that can become communication partners.

[0253] For example, the control unit 44 sets the dynamic antenna rotation range by using parameters set based on the detection accuracy of the antenna direction during use of the wireless station.

[0254] For example, the control unit 44 sets the dynamic antenna rotation range by using a parameter set based on the detection accuracy of the antenna direction by the detection unit that detects the antenna direction.

[0255] For example, the control unit 44 sets two or more dynamic antenna rotation ranges having different division sizes as the antenna rotation ranges that may be used.

[0256] <2-5. Configuration of Proxy Device>

[0257] Next, the configuration of the proxy device 50 will be described. Figure 11This figure illustrates an example configuration of a 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 as a proxy (representative) of one or more base station devices 20. For example, the proxy device 50 is a domain proxy (DP) that acts on behalf of (represents) multiple CBSDs.

[0258] Note that the proxy system may include 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.

[0259] Note that the communication device that the proxy device 50 replaces (represents) is not limited to the base station device 20, and may be, for example, the terminal device 30. In the following description, one or more communication devices (e.g., one or more base station devices 20) that the proxy device 50 replaces (represents) may be referred to as subordinate communication devices (e.g., subordinate base station devices 20).

[0260] The agent device 50 includes a wireless communication unit 51, a storage unit 52, a network communication unit 53, and a control unit 54. Figure 10 The configuration shown in the diagram is a functional configuration, and its hardware configuration may be different from that shown in the diagram. In addition, the functions of the agent device 50 can be distributed and implemented in multiple physically separated components.

[0261] The wireless communication unit 51 is a wireless communication interface for wireless communication with other communication devices (e.g., the base station device 20, the terminal device 30, the communication control device 40, and other agent devices 50). The wireless communication unit 51 operates under the control of the control unit 54. The wireless communication unit 51 supports one or more radio access schemes. For example, the wireless communication unit 31 supports both NR and LTE. The wireless communication unit 51 can also support other radio access schemes such as W-CDMA and CDMA2000.

[0262] The storage unit 52 is a data read / write storage device such as a DRAM, SRAM, flash memory, or hard disk. The storage unit 52 serves as a storage device for the proxy device 50. The storage unit 52 can store information such as the expected transmission power, operating parameters, and owned resource information of each subordinate base station device 20.

[0263] 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). In one example, the network communication unit 53 is a LAN interface such as a NIC. The network communication unit 53 may be a USB interface including a USB host controller, a USB port, or the like. Furthermore, the network communication unit 53 may be a wired interface or a wireless interface. The network communication unit 53 functions as the network communication means of the proxy device 50. The network communication unit 53 communicates with other devices under the control of the control unit 54.

[0264] The control unit 54 is a controller that controls the various components of the proxy device 50. The control unit 54 is composed of a processor such as a central processing unit (CPU) and a microprocessor (MPU). In one example, the control unit 54 implements its functions by executing various programs stored in a storage device within the proxy device 50 using a random access memory (RAM) or the like as a workspace. Furthermore, the control unit 54 can be configured as an integrated circuit such as an application-specific integrated circuit (ASIC) or a field-programmable gate array (FPGA). Each of the CPU, MPU, ASIC, and FPGA can be considered a controller.

[0265] like Figure 11 As shown in the diagram, the control unit 54 includes an acquisition unit 541, a first sending unit 542, and a second sending unit 543. The various blocks (acquisition unit 541 to second sending unit 543) constituting the control unit 54 are functional blocks that indicate the functions of the control unit 54. These functional blocks may be software blocks or hardware blocks. For example, each of the above functional blocks may be a software module implemented by software (including microprograms), or a circuit block on a semiconductor chip (bare die). Of course, each functional block may be a processor or an integrated circuit. The method of constituting the functional blocks is arbitrary. Note that the control unit 54 may be constituted by functional units different from the above functional blocks.

[0266] Each block (acquisition unit 541 to second transmission unit 543 ) constituting the control unit 54 can operate, for example, as follows.

[0267] 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 granted usage pattern. The first transmission unit 542 then notifies the subordinate communication device (e.g., base station device 20) of information related to the grant granted by the communication control device 40 based on the request for grant. The communication control device 40 includes an acquisition unit and a processing unit. The acquisition unit acquires information related to the usage pattern of the secondary use of the frequency band used by the communication device using radio waves in the frequency band used for the first wireless communication. The processing unit performs processing related to the grant based on the information related to the authorized usage pattern.

[0268] Note that the operations of the various blocks (acquisition unit 541 to second transmission unit 543) constituting control unit 54 may be the same as the operations of the various blocks (acquisition unit 241 to transmission unit 243) constituting control unit 24 of base station device 20. For example, acquisition unit 541 may be the same as acquisition unit 241, while first transmission unit 542 and second transmission unit 543 may be the same as transmission unit 243. In the following description, the description of acquisition unit 241 may be replaced with acquisition unit 541, and the description of transmission unit 243 may be replaced with first transmission unit 542 and second transmission unit 543.

[0269] <<3. Interference Model>>

[0270] Next, an interference model assumed in this embodiment will be described. Figure 12 1 is an explanatory diagram illustrating an example of an interference model envisioned in the embodiment of the present disclosure. Note that the description of the base station device 20 in the following description may be replaced with a word indicating another communication device having a wireless communication function.

[0271] Figure 12 The interference model shown in the diagram is applied, for example, to the case where the primary system has a service area. Figure 12 In the example, communication system 1 (primary system) is a wireless communication system having a service area. This service area is, for example, the protection area of ​​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 communication system 1 or a public agency that manages radio waves (hereinafter referred to as the administrator). For example, the administrator may divide the protection area into a grid shape and set the center of a predetermined grid as a protection point. The protection points are determined using any method. The interference margin for each protection point is set by the administrator or the like. Figure 12The diagram illustrates interference caused to the protection points by multiple base station devices 20 constituting communication system 2 (subsystem). Communication control device 40 of communication system 2 controls the transmission power of multiple base station devices 20 so that the aggregate interference at each protection point does not exceed the set interference margin.

[0272] Figure 13 is an explanatory diagram illustrating another example of an interference model envisaged in the embodiment of the present disclosure. Figure 13 The interference model shown in the diagram is applied, for example, to the case where the primary system is only receiving. Figure 13 In the example shown in FIG2 , communication system 1 (primary system) includes a receiving antenna serving as wireless communication device 102. Wireless communication device 102 is, for example, a receiving antenna of a satellite ground station. Communication control device 40 of communication system 2 sets the location of the receiving antenna as a protection point and controls the transmission power of multiple base station devices 20 so that the aggregated interference at this point does not exceed the interference margin.

[0273] <<4. Main System Protection Method>>

[0274] Next, the main system protection method will be described. As described above, the main system protection method can be divided into the following two types, for example.

[0275] (1) Interference margin simultaneous allocation

[0276] (2) Interference margin iterative allocation formula

[0277] Note that examples of the interference margin simultaneous allocation primary system protection method include, for example, the method disclosed in Non-Patent Document 3 (e.g., the method for calculating the maximum allowable EIRP). Furthermore, examples of the interference margin iterative allocation primary system protection method include, for example, the iterative allocation process (IAP) disclosed in Non-Patent Document 6.

[0278] The following describes the "interference margin simultaneous allocation" primary system protection method and the "interference margin iterative allocation" primary system protection method. Note that the description of the base station device 20 in the following description can be replaced with words indicating other communication devices having wireless communication functions.

[0279] <4-1. Interference Margin Simultaneous Allocation Method>

[0280] First, the interference margin simultaneous distribution type primary system protection method will be described. Figure 14 This is an explanatory diagram for explaining the interference margin simultaneous allocation method for protecting the primary system. As described above, in the interference margin simultaneous allocation method, the communication control device 40 calculates the maximum allowable transmission power of the secondary system by using "a value uniquely obtained based on the positional relationship between the protection reference point of the primary system and the secondary system" as a reference value. Figure 14In the example, the allowed interference threshold of the main system is I accept The threshold value may be an actual threshold value, or may be a value set by taking a certain margin (eg, protection ratio) from the actual threshold value in consideration of calculation errors and interference variations.

[0281] In the interference margin simultaneous allocation primary system protection method, interference control involves determining the transmit power (EIRP, conducted power + antenna gain, etc.) of wireless devices so as not to exceed the permissible interference threshold. In this case, if there are a large number of base station devices 20 and the transmit power is determined not to exceed the permissible interference threshold, the interference power received in communication system 1 (primary system) may exceed the permissible interference threshold. Thus, the interference margin (permissible interference amount) is "allocated" based on the number of base station devices 20 registered with communication control device 40.

[0282] For example, in Figure 14 In the example of FIG, the total number of base station devices 20 is 5. Therefore, the number of base station devices 20 is allocated separately. accept The base station device 20 itself cannot recognize the allocated amount, so the base station device 20 recognizes the allocated amount through the communication control device 40, or obtains the transmission power determined based on the allocated amount. The communication control device 40 cannot recognize the number of wireless devices managed by other communication control devices 40, so the communication control device 40 can recognize the total number by exchanging information with each other and allocate the allowed interference amount. For example, in the communication control device 401, 3I is allocated. accept / 5 of the allowed interference amount.

[0283] Note that in this method, the interference margin not used by the base station apparatus 20 may be the residual interference margin. Figure 15 is a diagram illustrating a situation where a residual interference margin occurs. Figure 15 The diagram illustrates the total interference amount set in each of the two communication control devices 40 (communication control devices 401, 402). Figure 15 The diagram illustrates the amount of interference (interference amount) caused by multiple base station devices 20 (base station devices 201-205) under the management of two communication control devices 40 to a predetermined protection point of communication system 1. The interference amount obtained by subtracting the interference amount of base station device 20 from the total interference amount of the two communication control devices 40 is the residual interference margin. In the following description, the excess interference amount is referred to as the residual interference margin. The residual interference margin can also be rephrased as the residual interference amount.

[0284] <4-2. Interference Margin Iterative Allocation Formula>

[0285] Next, the interference margin iterative allocation primary system protection method will be described. As described above, in the interference margin iterative allocation method, the communication control device 40 calculates the maximum allowable transmission power of the secondary system by using the "desired transmission power of the secondary system" as a reference value. Figure 16 : This is an explanatory diagram for explaining the interference margin iterative allocation type primary system protection method. In the interference margin iterative allocation type, for example, each of the plurality of base station devices 20 stores the desired transmission power information in the storage unit 22. The desired transmission power information is information about the transmission power requested by the base station device 20 to the communication control device 40 as information on the transmission power required to transmit radio waves. Figure 16 In the example of , base station devices 201 to 204 respectively hold desired transmission power information A to D. Communication control device 40 distributes interference amounts A to D to base station devices 201 to 204 based on the desired transmission power information A to D, respectively.

[0286] <<5. Description of each process>>

[0287] Next, description will be given of various processes that may occur between entities of the communication system 2. Note that the description of the base station device 20 in the following description may be replaced with words indicating other communication devices having a wireless communication function.

[0288] <5-1. Registration Process>

[0289] The registration process is a process for registering device parameters related to base station device 20 and the like with communication control device 40. Generally, the registration process is initiated when one or more communication systems, including base station device 20 or a plurality of base station devices 20, notify communication control device 40 of a registration request containing device parameters. The registration request may be sent by a communication system (e.g., a proxy system such as proxy device 50) that replaces (represents) one or more base station devices 20.

[0290] Although in the following description, it is assumed that the communication system that replaces (represents) the multiple base station devices 20 is the proxy device 50, the term proxy device 50 in the following description can be replaced with a term indicating a communication system that replaces (represents) other communication devices, such as a proxy system.

[0291] (Details of required parameters)

[0292] The device parameters refer to the following information, for example.

[0293] Communication device-specific information

[0294] Location information

[0295] Antenna information

[0296] Wireless interface information

[0297] Legal Information

[0298] Installer Information

[0299] In implementation, information other than these may be considered device parameters.

[0300] The information specific to the communication device is information that can specify the base station device 20, information related to the hardware of the base station device 20, etc. For example, a serial number, a product model, etc. may be included.

[0301] The information that can identify the base station device 20 indicates the communication device user information, the communication device serial number, etc. For example, the user ID, call sign, etc. can be considered as the communication device user information. The user ID can be uniquely generated by the communication device user or can be issued in advance by the communication control device 40.

[0302] Information related to the hardware of base station device 20 may include, for example, transmit power class information, manufacturer information, and the like. For example, FCC CFR Part 96 defines two transmit power class information: Class A and Class B, and either type of information may be included. Furthermore, 3GPP TS 36.104 and TS 38.104 define certain classes of eNodeBs and gNodeBs, which may also be used.

[0303] The information related to the software of the base station device 20 may include, for example, version information, build numbers, etc. related to an execution program that describes the processing required for interaction with the communication control device 40. In addition, the version information, build numbers, etc. of the software that functions as the base station device 20 may also be included.

[0304] The information related to the location is generally information that can specify the geographical location of the base station device 20. For example, the information related to the location is coordinate information obtained by a positioning function represented by the Global Positioning System (GPS), Beidou, Quasi-Zenith Satellite System (QZSS), Galileo or Assisted Global Positioning System (A-GPS). Generally, information related to latitude, longitude, altitude and positioning error can be included. Alternatively, for example, the information related to the location can be location information registered in an information management device managed by a national regulatory agency (NRA) or its delegated agency. Alternatively, for example, the coordinates of the X-axis, Y-axis and Z-axis with a specific geographical location as the origin can be used. In addition, an identifier indicating outdoor / indoor can be provided together with such coordinate information.

[0305] Furthermore, the location-related information may be information indicating the area where the base station device 20 is located. For example, government-defined information such as a postal code and an address may be used. Furthermore, for example, an area may be indicated by a set of three or more geographic coordinates. Information indicating these areas may be provided along with the coordinate information.

[0306] Furthermore, if base station device 20 is located indoors, information indicating the floor of the building may be provided as part of the location-related information. For example, the floor number, an identifier indicating aboveground / underground location, etc., may be provided. Furthermore, for example, information indicating further enclosed spaces within the building, such as room numbers and names within the building, may be provided.

[0307] Typically, the positioning function is preferably provided at base station device 20. However, depending on the performance of the positioning function or the installation location, it may not always be possible to obtain position information that meets the required accuracy. Therefore, the positioning function may be used by the installer. In such cases, it is preferable to write the position information measured by the installer into base station device 20.

[0308] Antenna information is generally information indicating the performance, configuration, etc. of the antenna provided at the base station device 20. Generally, information such as antenna installation height, tilt angle (downtilt angle), horizontal direction (azimuth angle), aiming (boresight), antenna peak gain, and antenna model may be included.

[0309] The antenna information may also include information about the beams that can be formed, such as beam width, beam pattern, and analog / digital beamforming capabilities.

[0310] The antenna information may also include information related to the performance and configuration of multiple-input, multiple-output (MIMO) communications. For example, it may include information such as the number of antenna elements and the maximum number of spatial streams. Furthermore, it may include codebook information to be used, weight matrix information (unitary matrix obtained by singular value decomposition (SVD), eigenvalue decomposition (EVD), block diagonalization (BD), etc., zero-forcing (ZF) matrix, or minimum mean square error (MMSE) matrix), etc. Furthermore, in the case of including maximum likelihood detection (MLD) requiring nonlinear calculations, information indicating MLD, etc., may also be included.

[0311] Antenna information may include the vertical transmission angle (ZoD). ZoD is a type of radio wave angle of arrival. ZoD can be estimated by other base station devices 20 based on radio waves transmitted from the antennas of base station device 20. In this case, base station device 20 may be a terminal device functioning as a base station or access point, a device performing D2D communication, a mobile relay base station, or the like. ZoD can be estimated using radio wave direction of arrival estimation techniques such as Multiple Signal Classification (MUSIC) or Signal Propagation Estimation with Rotational Invariance Technique (ESPRIT). ZoD information can be used by communication control device 40 as measurement information.

[0312] The wireless interface information generally refers to information indicating the wireless interface technology of the base station device 20. For example, the wireless interface information includes identifier information indicating a standard technology, such as a technology used in GSM (registered trademark), CDMA 2000, UMTS, E-UTRA, 5G New Radio (5GNR), or a next-generation cellular system, a derivative technology compliant with LTE such as MulteFire or LTE-Unlicensed (LTE-U), a metropolitan area network (MAN) such as WiMAX or WiMAX2+, or an IEEE 802.11 wireless LAN. In addition, the version number or release number of the technical specifications defining these technologies may also be provided. The technology included in the wireless interface information does not necessarily have to be a standard technology and may include information indicating a proprietary wireless technology.

[0313] In addition, the wireless interface information may also include frequency band information supported by the base station device 20. For example, the frequency band information may be represented by one or more combinations of upper and lower frequency limits, one or more combinations of center frequency and bandwidth, or one or more 3GPP operating band numbers.

[0314] The frequency band information supported by the base station device 20 may also include information on carrier aggregation (CA) or channel bonding capabilities. For example, the frequency band information may include information about frequency bands that can be combined. In addition, the carrier aggregation may also include information about the frequency bands that are expected to be used as primary component carriers (PCCs) or secondary component carriers (SCCs). The carrier aggregation may also include the number of CCs that can be aggregated simultaneously.

[0315] The frequency band information supported by the base station apparatus 20 may also contain information indicating radio wave usage priority such as PAL and GAA.

[0316] The wireless interface information may also include modulation scheme information supported by the base station device 20. For example, as a typical example, the wireless interface information may include information indicating primary modulation schemes such as frequency shift keying (FSK), n-value phase shift keying (PSK) (where n is 2, 4, 8, etc.), and n-value quadrature amplitude modulation (QAM) (where n is 4, 16, 64, 256, etc.), and information indicating secondary modulation schemes such as orthogonal frequency division multiplexing (OFDM), DFT-spread OFDM (DFT-s-OFDM), and filter bank multi-carrier (FBMC).

[0317] The wireless interface information may also include information related to error correction codes. For example, the wireless interface information may include capabilities such as turbo codes, low-density parity check (LDPC) codes, and polar codes, and code rate information to be applied.

[0318] As another aspect, the modulation scheme information and the information related to the error correction code may also be represented by a modulation and coding scheme (MCS) index.

[0319] Furthermore, the wireless interface information may also include information indicating functions specific to each wireless technology supported by base station device 20. For example, a typical example is the Transmission Mode (TM) information defined in LTE. Furthermore, as with the aforementioned TM, functions that have two or more modes may be included in the wireless interface information. Furthermore, if, in the technical specifications, base station device 20 supports a function that is not required by the specifications even if there are fewer than two modes, the wireless interface information may also include information indicating this fact.

[0320] In addition, the wireless interface information may also include radio access technology (RAT) information supported by the base station device 20. For example, the wireless interface information may include information indicating orthogonal multiple access (OMA) schemes such as time division multiple access (TDMA), frequency division multiple access (FDMA), and orthogonal frequency division multiple access (OFDMA), non-orthogonal multiple access (NOMA) schemes such as power division multiple access (PDMA, a typical example is a technology achieved by a combination of superposition coding (SPC) and a successive interference canceller (SIC)), code division multiple access (CDMA), sparse code multiple access (SCMA), interleaved multiple access (IDMA), and spatial division multiple access (SDMA), or opportunistic access schemes such as carrier sense multiple access / collision avoidance (CSMA / CA) and carrier sense multiple access / collision detection (CSMA / CD).

[0321] Furthermore, the wireless interface information may also include information related to the duplex mode supported by base station device 20. As a typical example, the wireless interface information may include frequency division duplex (FDD), time division duplex (TDD), and full duplex (FD). If TDD is included as wireless interface information, TDD frame configuration information to be used / supported by base station device 20 may be provided. Furthermore, information related to the duplex mode may be included for each frequency band indicated by the frequency band information.

[0322] The wireless interface information may also include information on a transmission diversity method supported by the base station device 20. For example, the wireless interface information may include space-time coding (STC) and the like.

[0323] In addition, the wireless interface information may also include guard band information. For example, the wireless interface information may include information related to the guard band size defined in the standard. Alternatively, for example, the wireless interface information may include information related to the guard band size expected by base station device 20.

[0324] Legal information generally includes information related to regulations established by radio wave regulatory agencies or equivalent organizations in various countries and regions that base station device 20 must comply with, as well as certification information obtained by base station device 20. Information related to these regulations may generally include, for example, information on upper limits for out-of-band emissions and information related to receiver blocking characteristics. Certification information may generally include, for example, type approval information (such as FCC ID and technical standard compliance certificate), and legal / regulatory information that serves as the standard for obtaining certification (for example, FCC regulation numbers, ETSI harmonized standard numbers, etc.).

[0325] Within legal information, information defined in the wireless interface technology specifications can replace information related to numerical values. For example, instead of information on the upper limit of out-of-band emissions, the upper limit of out-of-band emissions can be derived and used by using the adjacent channel leakage ratio (ACLR). Furthermore, the ACLR itself can be used if necessary. Furthermore, the adjacent channel selectivity (ACS) can be used instead of the blocking characteristic. Furthermore, these can be used in combination, or the adjacent channel interference ratio (ACIR) can be used.

[0326] The installer information may include information that can specify the person (installer) who installed the base station device 20, unique information associated with the installer, and the like. For example, Non-Patent Document 2 discloses a Certified Professional Installer Registration ID (CPIR-ID) and a CPI name as information that can specify the installer. Furthermore, Non-Patent Document 2 discloses, for example, a contact address (mailing / contact address), an email address, a telephone number, and a public key identifier (PKI) as unique information associated with the installer. The present invention is not limited to this, and other information related to the installer may be included as necessary.

[0327] [Supplement of required parameters]

[0328] During the registration process, depending on the embodiment, it is envisaged that not only the device parameters related to the base station device 20 but also the device parameters related to the terminal device 30 are required to be registered in the communication control device 40. In this case, the term "communication device" in the above description (Details of Required Parameters) can be replaced with the term "terminal device" or an equivalent term. In addition, parameters specific to the "terminal device" that are not described in the above (Details of Required Parameters) can also be regarded as required parameters in the registration process. For example, examples of the parameters may include user equipment (UE) categories defined in 3GPP.

[0329] [Details of registration process]

[0330] Figure 17 This is a sequence diagram for explaining the registration process. One or more communication systems, including base station device 20 or multiple base station devices 20, generate a registration request message using device parameters (step S11) and notify communication control device 40 of the registration request message (step S12). Proxy device 50 can generate and / or notify this message.

[0331] Here, if the device parameters include installer information, this information can be used to prevent tampering with the registration request. Furthermore, some or all of the information included in the registration request can be encrypted. Specifically, for example, a process can be performed in which a public key unique to the installer is shared between the installer and the communication control device 40 in advance, and the installer encrypts the information using a private key. Examples of encrypted information include security-sensitive information such as location information.

[0332] Furthermore, as disclosed in Non-Patent Document 2, for example, the installer may directly write the position information into the communication control device 40 .

[0333] After receiving the registration request, the communication control device 40 performs the registration process of the base station device 20 (step S13) and returns a registration response according to the processing result (step S14). If the information required for registration is not missing or there is no abnormality, the communication control device 40 records the information in the storage unit 42 and notifies the normal completion. Otherwise, the communication control device 40 notifies the failure of the registration. In the case of normal completion of the registration, the communication control device 40 can assign an ID to each communication device and notify the communication device of the ID information by attaching the ID information in the response. In the case of registration failure, generally, one or more communication systems including the base station device 20 or multiple base station devices 20, or their operators (for example, mobile communication companies or individuals) or installers correct the registration request, etc., and try the registration process until the registration is completed normally.

[0334] In addition, the registration request may include information specific to the communication device in the device parameters, and other information may be obtained from a wireless station specification database storing wireless station information of the subsystem. The wireless station specification database may be managed and operated by a radio management agency, a subsystem operator, or other third-party organization.

[0335] Note that the registration process can be performed multiple times. Specifically, for example, if the change in location information exceeds a predetermined standard due to movement or increased accuracy, the registration process can be performed again. The predetermined standard is generally established by the legal system. For example, under 47 CFR Part 15, if the location information changes by 100 meters or more, a Mode II personal / portable white space device is required to access the database again.

[0336] <5-2. Available Spectrum Query Process>

[0337] The available spectrum inquiry process is a process in which base station device 20, proxy device 50, etc., queries communication control device 40 for information related to available frequencies. Generally, this process begins when base station device 20, proxy device 50, etc. notifies communication control device 40 of a query request containing information that can specify base station device 20 (or a base station device 20 under proxy device 50).

[0338] (1)Example 1

[0339] Here, the available spectrum information generally refers to information indicating frequencies that can be safely used for secondary use without causing fatal interference to the primary system at the location of the base station device 20 (or the base station device 20 under the proxy device 50). For example, in a case where the base station device 20 is located in a secondary use prohibited area such as an exclusion zone in order to protect the primary system using the frequency channel F1, the frequency channel F1 is not notified to the base station device 20 as an available channel.

[0340] Furthermore, the available spectrum information may include the time at which the frequency channel becomes available calculated based on the usage schedule information (usage plan) of the master wireless station acquired from the above-mentioned wireless station specification database or wireless station usage schedule database.

[0341] (2)Example 2

[0342] Furthermore, for example, in the case where it is determined that fatal interference is caused to the primary system even outside the secondary use prohibited area, there is a case where the frequency channel is not notified to the base station apparatus 20 as an available channel.

[0343] (3)Example 3

[0344] Depending on conditions other than the primary system protection requirements of Example 2, the available spectrum information may include frequency channels that are not notified to base station device 20 as available channels. Specifically, for example, to prevent possible interference between base station devices 20, frequency channels currently being used by other base station devices 20 located near base station device 20 (or base station devices 20 under proxy device 50) may not be notified to base station device 20 as available channels.

[0345] (4)Example 4

[0346] Even in cases corresponding to these situations (Example 2, Example 3), the same frequency as that of the main system or the neighboring base station device 20 can be notified to the base station device 20 as an available channel. In such a case, the maximum allowable transmit power information is generally included in the available spectrum information. The maximum allowable transmit power is generally expressed in equivalent isotropically radiated power (EIRP). The maximum allowable transmit power is not necessarily limited to this. For example, it can be provided by a combination of antenna power (conducted power) and antenna gain. Feeder loss can also be included. In addition, for the antenna gain, the allowable peak gain can be set for each spatial direction.

[0347] [Details of required parameters]

[0348] As information that can specify the base station device 20, for example, information specific to the communication device registered at the time of the registration process, the ID information explained in the above (Details of Registration Process), and the like can be conceived.

[0349] The query request may also include query request information. The query request information may, for example, include information indicating the frequency band for which availability is desired. Furthermore, the query request may also include, for example, transmit power information. For example, if only frequencies with a desired transmit power are desired, base station device 20 or proxy device 50 may include transmit power information in the query request. Furthermore, for example, the query request may include information related to the time at which the availability of the corresponding frequency band is desired. A query request does not necessarily need to include query request information.

[0350] In addition, the query 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, it may include not only raw data but also processed information. For example, standardized indicators represented by reference signal received power (RSRP), reference signal strength indicator (RSSI), and reference signal received quality (RSRQ) may be used.

[0351] [Details of available frequency evaluation processing]

[0352] Figure 18This is a sequence diagram illustrating the available spectrum query process. Base station device 20 or proxy device 50 generates a query request (step S21) containing information that specifies base station device 20 (or a base station device 20 under proxy device 50), and notifies communication control device 40 of the query request (step S22).

[0353] After receiving the query request, the communication control device 40 evaluates the available frequencies based on the query request information (step S23). For example, as described above in Examples 1 to 3, the communication control device 40 may evaluate the available frequencies taking into account the presence of the primary system, its secondary use prohibited area 303, and the base station device 20 nearby.

[0354] As described above in Example 4, the communication control device 40 can derive the maximum allowable transmit power information. Generally, the maximum allowable transmit power is calculated using the allowable interference power information in the primary system or its protected area, the reference point information for calculating the interference power level caused to the primary system, the registration information of the base station device 20, and a propagation loss estimation model. Specifically, as an example, the maximum allowable transmit power is calculated using the following mathematical expression:

[0355] P MaxTx(dBm) =I Th(dBm) +PL(d) (dB) (1)

[0356] Here, P MaxTx(dBm) is the maximum allowed transmit power, I Th(dBm) is the allowed interference power, d is the distance between the reference point and the base station device 20, PL(d) (dB) is the propagation loss at distance d. Although this mathematical expression does not explicitly specify the antenna gain at the transceiver, it may be included based on the method used to express the maximum allowable transmit power (EIRP, conducted power, etc.) or the reference point for received power (antenna input point, antenna output point, etc.). Furthermore, a safety margin to compensate for variations due to fading may be included. Furthermore, feeder line losses and other factors may be considered as necessary.

[0357] Furthermore, the above mathematical expressions are described based on the assumption that a single base station device 20 is the interference source. For example, in the case where the aggregated interference from multiple base station devices 20 must be considered simultaneously, a correction value may be considered. Specifically, for example, the correction value may be determined based on the three interference margin schemes disclosed in Non-Patent Document 3 (fixed / predetermined, flexible, and flexible minimization).

[0358] Note that although the above mathematical expressions are expressed using logarithms, they can of course be converted into real numbers and used in practice. In addition, all parameters in the logarithmic notation described in this embodiment can be appropriately converted into numbers and used.

[0359] (1) Method 1

[0360] Furthermore, as described in the aforementioned section (Details of Required Parameters), when the transmission power information is included in the query request information, a method different from the above method may be used to evaluate available frequencies. Specifically, for example, assuming the desired transmission power indicated by the transmission power information is used, when the estimated amount of interference is less than the permissible interference power in the primary system or its protected area, the frequency channel is determined to be available, and the base station device 20 (or proxy device 50) is notified of the frequency channel.

[0361] (2) Method 2

[0362] Although an example of calculating frequency band usage conditions based on other system-related information has been described, the present disclosure is not limited to such an example. For example, in a manner similar to the area of ​​a radio environment map (REM), when the area / space where base station device 20 can use the shared frequency band is predetermined, available spectrum information can be derived based solely on position-related information and altitude-related information. Furthermore, for example, even when a lookup table is prepared in which position and altitude are associated with available spectrum information, available spectrum information can be derived based solely on position-related information and altitude-related information.

[0363] It is not necessary to evaluate available frequencies only after receiving a query request. For example, after the above-described registration process is normally completed, the communication control device 40 may evaluate available frequencies independently without a query request. In such a case, the communication control device 40 may create the REM or lookup table illustrated in Method 2, or an information table similar thereto.

[0364] In any method, it is also possible to evaluate the radio wave usage priority such as PAL or GAA. For example, when information related to the radio wave usage priority is included in the registered device parameters or query request, it is possible to determine whether the frequency can be used based on the priority, and the determination result can be notified. In addition, for example, as disclosed in Non-Patent Document 2, when information related to the base station device 20 that performs high-priority use (such as PAL) from the user is registered in the communication control device 40 in advance (in Non-Patent Document 2, referred to as a cluster list), it is possible to perform an evaluation based on this information.

[0365] 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). By using the evaluation result received from the communication control device 40, the base station device 20 can select a desired communication parameter.

[0366] <5-3. Frequency Use Permit Process (Spectrum Grant Process)>

[0367] The frequency use permission process is a process for base station device 20 and the like to receive secondary frequency use permission from communication control device 40. Generally, after the registration process has completed normally, this process begins by notifying communication control device 40 of a frequency use permission request, which includes information that can specify base station device 20, via one or more communication systems including base station device 20 or a plurality of base station devices 20. This notification can be made by proxy device 50. Note that "after the registration process has completed normally" also means that the available spectrum inquiry process does not necessarily have to be performed.

[0368] In this embodiment, it is envisaged that at least the following two frequency use permission request schemes may be used.

[0369] Designated plan

[0370] Flexible solutions

[0371] The designation scheme is a request scheme in which the base station device 20 designates at least the frequency band to be used and the maximum transmission power as desired communication parameters and requests the communication control device 40 to permit operation based on the desired communication parameters. The parameters are not necessarily limited to these parameters, and parameters specific to the wireless interface technology (such as the modulation scheme and duplex mode) can be specified. In addition, information indicating the priority of radio wave use such as PAL and GAA can be included.

[0372] The flexible scheme is a request scheme in which base station device 20 only specifies requirements related to communication parameters and requests communication control device 40 to specify communication parameters that both meet these requirements and can be used secondary. Requirements regarding communication parameters may include bandwidth, desired maximum transmit power, or desired minimum transmit power. Parameters are not necessarily limited to these parameters; parameters specific to the radio interface technology (such as modulation scheme and duplex mode) may be specified. Specifically, for example, one or more TDD frame configurations may be preselected and notified.

[0373] In any manner, a measurement report may be included. The measurement report includes the results of measurements performed by the base station device 20 and / or the terminal device 30. For example, it may include not only raw data but also processed information. For example, standardized indicators represented by reference signal received power (RSRP), reference signal strength indicator (RSSI), and reference signal received quality (RSRQ) may be used.

[0374] [Details of frequency use license processing]

[0375] Figure 19 This is a sequence diagram for explaining the frequency use permission process. One or more communication systems, including base station device 20 or multiple base station devices 20, generate a frequency use permission request containing information that can specify base station device 20 (step S31) and notify communication control device 40 of the frequency use permission request (step S32). Proxy device 50 can generate and / or notify this request. The frequency use permission request is acquired by, for example, acquisition unit 441 of communication control device 40.

[0376] After receiving the frequency use permission request, the communication control device 40 performs frequency use permission processing based on the frequency use permission request scheme (step S33). For example, the communication control device 40 can perform frequency use permission processing by using the method described in Examples 1 to 3 of <5-2. Available Spectrum Inquiry Process>, taking into account the presence of the primary system, its secondary use prohibited area 303, and the nearby base station device 20.

[0377] When using the flexible scheme, the communication control device 40 can derive the maximum allowable transmit power information using the method described in Example 4 of <5-2. Available Spectrum Inquiry Procedure>. Generally, the communication control device 40 calculates the maximum allowable transmit power by using the allowable interference power information in the primary system or its protected area, the calculation reference point information of the interference power level of the interference caused to the primary system, the registration information of the base station device 20, and the propagation loss estimation model. For example, the communication control device 40 calculates the maximum allowable transmit power using the following expression (2).

[0378] P MaxTx(dBm) =I Th(dBm) +PL(d) (dB) (2)

[0379] Here, P MaxTx(dBm) is the maximum allowed transmit power, I Th(dBm) is the allowed interference power, d is the distance between the reference point and the base station device 20, PL(d) (dB) is the propagation loss at distance d. Although this mathematical expression does not explicitly indicate the antenna gain at the transceiver, it can be used after being modified to reflect the maximum allowable transmit power (EIRP, conducted power, etc.) or the reference point for received power (antenna input point, antenna output point, etc.). Furthermore, a safety margin to compensate for variations due to fading may be included. Furthermore, feeder line losses, etc., may be considered as necessary.

[0380] Furthermore, the above mathematical expressions are described based on the assumption that a single base station device 20 is the interference source. For example, in the case where the aggregated interference from multiple base station devices 20 must be considered simultaneously, a correction value may be considered. Specifically, for example, the correction value may be determined based on the three schemes disclosed in Non-Patent Document 3 (fixed / predetermined, flexible, and flexible minimization).

[0381] Various models can be used as propagation loss estimation models. When a model is specified for each application, it is preferable to use the specified model. For example, in Non-Patent Document 6, propagation loss models such as the extended Hata (eHATA) or the irregular terrain model (ITM) are used for each application. Of course, when implementing the present invention, the propagation loss model is not necessarily limited to this.

[0382] In the intended use, if no model is specified, a model can be selectively used as needed. As a specific example, for example, an aggressive model such as the free space loss model can be selectively used when estimating the interference power with other base station devices 20, while a conservative model can be selectively used when estimating the coverage range of base station device 20.

[0383] Furthermore, when using a designated scheme, frequency use permission processing can be performed using the method described in Method 1 of <5-2. Available Spectrum Inquiry Procedure>. Specifically, for example, assuming that the desired transmission power indicated by the transmission power information is permitted to be used, when the estimated amount of interference is less than the permissible interference power in the primary system or its protected area, it is determined that the frequency channel is available, and the base station device 20 (or the proxy device 50) is notified of the frequency channel.

[0384] In any method, it is also possible to evaluate the radio wave usage priority such as PAL or GAA. For example, when information related to the radio wave usage priority is included in the registered device parameters or query request, it is possible to determine whether the frequency can be used based on the priority, and the determination result can be notified. In addition, for example, as disclosed in Non-Patent Document 2, when information related to the base station device 20 that performs high-priority use (such as PAL) from the user is registered in the communication control device 40 in advance (in Non-Patent Document 2, referred to as a cluster list), it is possible to perform an evaluation based on this information.

[0385] Frequency use permission processing does not necessarily need to be performed upon receipt of a request. For example, after the above-described registration process has completed normally, the communication control device 40 may independently perform this processing without a frequency use permission request. Furthermore, for example, the frequency use permission determination process may be performed periodically. In such cases, the REM or lookup table illustrated in Method 2 of <5-2. Available Spectrum Query Process>, or similar information tables, may be created.

[0386] After completing the frequency use permission process, the communication control device 40 notifies the base station device 20 of the determination result (step S34).

[0387] <5-4. Frequency Usage Notification (Spectrum Usage Notification / Heartbeat)>

[0388] Frequency usage notification is a process in which base station device 20, proxy device 50, or the like notifies communication control device 40 of frequency usage based on communication parameters permitted for use in the frequency usage permission process. Generally, this process begins when base station device 20 or proxy device 50 notifies communication control device 40 of a notification message containing information that can specify base station device 20.

[0389] This process is preferably performed periodically until the use of the frequency is rejected by the communication control device 40. When this process is completed normally, the base station device 20 can start or continue radio wave transmission. For example, if the granted status is Granted, the granted status changes to Authorized as a result of the success of this process. Alternatively, if the granted status is Authorized, the granted status changes to Granted or Idle as a result of the failure of this process.

[0390] Here, the grant is permission given by the communication control device 40 (e.g., SAS) to the base station device 20 (e.g., CBSD) or the like for radio wave transmission. The grant can also be referred to as permission to use radio resources (frequency resources). For example, the grant is described in non-patent document 2. In non-patent document 2, a signaling protocol between a frequency shared database (SAS) and a base station (CBSD) for the United States at 3550 to 3700 MHz is standardized. In this standard, the permission for radio wave transmission given by the SAS to the CBSD is called a "grant." The operating parameters allowed in the grant are defined by the maximum permitted equivalent isotropic radiated power (IERP) and the frequency channel. In other words, in order to use multiple frequency channels for radio wave transmission, the CBSD needs to obtain multiple grants from the SAS.

[0391] In the grant, a status indicating a status in which radio wave transmission is permitted is defined. Figure 20 is a state transition diagram illustrating a radio wave transmission permission state. Figure 20In the IEEE 802.11a standard, the "Granted" state indicates that a grant is granted but radio transmission is prohibited, while the "Authorized" state indicates that radio transmission is permitted based on the operational parameter values ​​defined in the grant. These two states transition based on the results of the heartbeat process defined in the same standard.

[0392] In the following description, a frequency usage notification may be referred to as a heartbeat request or simply a heartbeat. Furthermore, the transmission interval of a heartbeat request may be referred to as a heartbeat interval. Note that the descriptions of a heartbeat request or heartbeat appearing in the following description can be appropriately replaced with other descriptions indicating "a request to start or continue radio wave transmission." Similarly, the heartbeat interval can be replaced with other descriptions indicating the transmission interval of a frequency usage notification (e.g., a transmission interval).

[0393] Figure 21 This is a sequence diagram illustrating the frequency usage notification process. One or more communication systems including base station device 20 or multiple base station devices 20 generate a notification message containing information that can specify base station device 20 (step S41) and notify communication control device 40 of the notification message (step S42). Proxy device 50 can generate and / or notify this message.

[0394] After receiving the frequency usage notification, the communication control device 40 can determine whether to allow the start / continue of radio wave transmission (step S43). Examples of the determination method include confirming the frequency usage information of the main system. Specifically, the permission or rejection of the start / continue of radio wave transmission can be determined based on changes in the main system's frequency of use, changes in the frequency usage status of a main system with unstable radio wave usage (e.g., a shipborne radar), etc.

[0395] After completing the determination process, the communication control device 40 notifies the base station device 20 (or the proxy device 50 ) of the determination result (step S44 ).

[0396] In this process, a command to reconfigure communication parameters can be issued from the communication control device 40 to the base station device 20 (or the proxy device 50). Generally, this command can be issued in response to a frequency usage notification. For example, communication parameter information to be recommended can be provided.

[0397] <5-5. Supplementary information for each process>

[0398] As will be described below, each process does not necessarily need to be implemented separately. For example, by replacing a third process with one that performs the functions of two different processes, the two different processes can be implemented. Specifically, for example, a registration request and an available spectrum inquiry request can be notified in one process. Furthermore, for example, a frequency use permission process and a frequency use notification process can be performed in one process. Of course, the combinations are not limited to these; three or more processes may be combined. Furthermore, the above processes can be performed separately.

[0399] Furthermore, when this embodiment is applied for the purpose of sharing frequencies with existing systems, it is preferable to select and use an appropriate procedure or an equivalent procedure based on the radio laws related to the frequency band in the country or region where the technology of this embodiment is implemented. For example, when a communication device must be registered in order to use a specific frequency band in a specific country or region, it is preferable to perform the registration procedure.

[0400] Furthermore, the phrase "acquiring information" or an equivalent expression in this embodiment does not necessarily mean that the information is acquired according to the above-described process. For example, although the description of using the location information of base station device 20 in the available frequency evaluation process does not necessarily mean that the information acquired during the registration process must always be used, and if the location information is included in the available frequency query process request, that location information can be used. In other words, this means that within the scope described in this embodiment and within the scope of technical feasibility, the described parameters can be included in other processes.

[0401] Furthermore, information included in the response from the communication control device 40 to the base station device 20 (or the proxy device 50) or the like described in the above-described process may be sent as a push notification. Specifically, available spectrum information, recommended communication parameter information, a notification of rejection of continued radio wave transmission, and the like may be sent as push notifications.

[0402] <5-6. About each process of terminal equipment>

[0403] For terminal device 30, the various procedures described in <5-1> to <5-4> can basically be used. However, unlike base station device 20, terminal device 30 has mobility. In other words, location information is dynamically updated. Depending on the legal system, if the location information changes by a certain amount or more, there may be cases where re-registration with communication control device 40 is required. Therefore, the operating form defined by the Communications Authority (Ofcom) (see Non-Patent Document 4) defines the following two communication parameters.

[0404] Specific operating parameters

[0405] General operating parameters

[0406] In this non-patent document, specific operating parameters are defined as "operating parameters specific to a particular slave white space device (WSD)." In other words, the specific operating parameters are communication parameters calculated using the device parameters of the slave WSD corresponding to the terminal device 30. Characteristically, the specific operating parameters are calculated by a white space database (WSDB) using the location information of the slave WSD.

[0407] In accordance with such characteristics, it is envisaged that specific operating parameters are suitable for low-mobility or fixed-installation terminal devices 30 .

[0408] In this non-patent document, universal operating parameters are defined as "operating 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)." As a characteristic, universal operating parameters are calculated by the WSDB without using the location information of the slave WSD.

[0409] According to such features, it is envisioned that the universal operating parameters are suitable for the terminal device 30 with high mobility.

[0410] Information about the terminal device 30 can be provided from the base station device 20 via unicast / broadcast. For example, a broadcast signal represented by the Contact Verification Signal (CVS) defined in FCC rule Part 15 Subpart H can be used. Alternatively, the general operating parameters can be provided via a broadcast signal specific to the wireless interface. Specifically, for example, the general operating parameters can be provided via the Physical Broadcast Channel (PBCH) or NR-PBCH used in LTE or 5GNR.

[0411] <5-7. Processes Occurring Between Communication Control Devices>

[0412] [Information Exchange]

[0413] The communication control device 40 can exchange management information with other communication control devices 40 . Figure 22 It is a sequence diagram used to illustrate the process of exchanging management information. Figure 22 In the example of FIG5 , the communication control device 401 and the communication control device 402 exchange management information (step S51). Of course, the communication control devices that exchange information are not limited to the communication control device 401 and the communication control device 402.

[0414] During the management information exchange process, it is preferred that at least the following information be exchanged.

[0415] Communication equipment registration information

[0416] Communication equipment communication parameter information

[0417] Regional Information

[0418] Communication device registration information generally refers to the device parameters of the base station device 20 registered with the communication control device 40 during the registration process. Not all registration information needs to be exchanged. For example, information corresponding to personal information may not need to be exchanged. Furthermore, when exchanging communication device registration information, encrypted and obfuscated information may be exchanged. For example, information converted to binary values ​​or signed using an electronic signature mechanism may be exchanged.

[0419] The communication parameter information of the communication device is generally information related to the communication parameters currently used by the base station device 20. The communication parameter information of the communication device preferably includes at least information indicating the used frequency and transmission power. The communication parameter information of the communication device may include other communication parameters.

[0420] Regional information generally refers to information indicating a predetermined geographical area and may include regional information of various attributes in various aspects.

[0421] For example, this information may include protection area information of the base station device 20 serving as a high-priority secondary system, such as the PAL protection area (PPA) disclosed in Non-Patent Document 5. The area information in this case can be represented by a set of three or more geographical location coordinates, for example. Furthermore, for example, if multiple communication control devices 40 can reference a common external database, this information can be represented by an ID indicating the information.

[0422] Furthermore, for example, information indicating the coverage area of ​​base station device 20 may be included. In this case, the area information may also be represented by, for example, a set of three or more geographic location coordinates. Furthermore, for example, assuming a circle with the geographic location of base station device 20 as the origin, the area information may be represented by information indicating the radius of the circle. Furthermore, for example, if multiple communication control devices 40 can reference a common external database, this information may be represented by an ID indicating the information.

[0423] In addition, as another aspect, information related to regional divisions predetermined by a management department, etc. may also be included. Specifically, for example, a certain area may be indicated by indicating an address. In addition, for example, a permitted area may be indicated in a similar manner.

[0424] Furthermore, as another aspect, the area information does not necessarily need to represent a planar area, but may represent a three-dimensional space. For example, the area may be represented using a spatial coordinate system. Furthermore, for example, information indicating a predetermined enclosed space, such as the number of floors, floors, and room numbers of a building, may be used.

[0425] This information can be exchanged in various ways, examples of which are described below.

[0426] ID Assignment Scheme

[0427] Time period designation plan

[0428] Regional Designation Scheme

[0429] Dump solution

[0430] The ID designation scheme is a scheme for acquiring information corresponding to an ID previously assigned to specify information to be managed by communication control device 40. For example, assume that communication control device 401 manages base station device 20 with ID: AAA. In this case, communication control device 402 designates ID: AAA to communication control device 401 and issues an information acquisition request. After receiving this request, communication control device 401 searches for information with ID: AAA and, in response, notifies the corresponding base station device 20 of its registration information and communication parameter information.

[0431] In the period designation scheme, a specific period is designated, and information satisfying predetermined conditions can be exchanged during the period.

[0432] Examples of predetermined conditions include whether information has been updated. For example, when acquiring communication device information within a specific time period is requested, registration information about base station devices 20 newly registered within the specified time period, or registration information about base station devices 20 whose communication parameters have changed and information about the communication parameters may be notified in response.

[0433] Examples of predetermined conditions include whether or not communication control device 40 is recording information. For example, when a request specifies acquisition of communication device information within a specific period, the communication control device 40 may provide notification of the registration information and communication parameters of base station device 20 recorded during that specific period. Furthermore, the latest information within that period may be provided. Alternatively, the update history may be provided for each piece of information.

[0434] In the area designation scheme, a specific area is designated and information pertaining to that area is exchanged. For example, when acquiring information about communication devices within a specific area designated by a request, the registration information and communication parameter information of the base station devices 20 installed in that area can be notified in response.

[0435] The dump scheme is a scheme for providing all information recorded by the communication control device 40. It is preferable to provide at least information related to the base station device 20 and area information by the dump scheme.

[0436] The above description of information exchange between communication control devices 40 is based on a pull scheme. In other words, the information exchange, as an example, takes the form of responding with information corresponding to parameters specified in a request, and can be implemented using the HTTP GET method. However, the present invention is not limited to a pull scheme; information can be proactively provided to other communication control devices 40 using a push scheme. A push scheme can be implemented, for example, using the HTTP POST method.

[0437] [Command / Request Process]

[0438] Communication control devices 40 can mutually execute commands and / or requests. Specifically, as an example, the communication parameters of base station device 20 are reconfigured. For example, if communication control device 401 determines that base station device 201 managed by communication control device 401 is experiencing significant interference from base station device 204 managed by communication control device 402, communication control device 401 can request communication control device 402 to change the communication parameters of base station device 204.

[0439] As another example, area information may be reconfigured. For example, if a flaw is discovered in the calculation of coverage information and protection area information related to base station device 204 managed by communication control device 402, communication control device 401 may request communication control device 402 to reconfigure area information. In addition to this, reconfiguration of area information may be requested for various reasons.

[0440] <<6. Main System Protection>>

[0441] Next, main system protection according to an embodiment of the present disclosure will be described. Hereinafter, FPU operated by a broadcasting company in Japan will be described as an example, however, main system protection according to an embodiment of the present disclosure is not limited to FPU.

[0442] For example, wireless systems for public affairs in the 2.3 GHz band, satellite mobile communication services or broadband mobile radio access systems in the 2.6 GHz band, 5 GHz band radio access systems, dedicated short range communications (DSRC), amateur radio, 5.8 GHz band image transmission systems, FPUs using microwave bands near 5 to 7 GHz, studio to transmitter link (STL) / transmitter to transmitter link (TTL) / transmitter to studio link (TSL) for video transmission, 6 GHz fixed wireless systems for telecommunications services, mobile satellite uplinks (C band), 26 GHz band fixed wireless access (FWA), airport ground surveillance radars, 25 GHz band low-power data communication systems, satellite uplinks (Ka band), image transmission (public affairs) using the 40 GHz band, wireless systems for public affairs and general business using the 40 GHz band, and FPUs using the 40 GHz band may also be protected by the main system.

[0443] <6-1. Assumed protection model for the main system>

[0444] In the description of the FPU, wireless stations that transmit video will be referred to as FPU transmitting stations, while wireless stations that receive video will be referred to as FPU receiving stations. Note that while in current FPUs, only the FPU receiving station needs to be protected from subsystems, in the advanced FPU solutions currently under discussion, the FPU receiving station will send control signals to the transmitting station. Therefore, the FPU transmitting station will also need to be protected from subsystems. In the embodiments of this disclosure, protection of the FPU transmitting station will also be described.

[0445] As the usage model of the FPU according to the embodiment, the following six operation models disclosed in Non-Patent Document 7 are assumed. Of course, the usage model of the FPU is not limited to these six models.

[0446] Model 1: Transmission from the OB van to the receiving base station with a transmission distance of 50 km (fixed relay)

[0447] Model 2: Transmission from the OB van to the receiving base station with a transmission distance of 10 km (mobile relay)

[0448] Model 3: Transmission from the broadcast vehicle to the receiving base station within a short urban area, with a transmission distance of approximately 3 km (mobile relay)

[0449] Model 4: Transmission from an OB van to a helicopter, with a transmission distance of approximately 2 km (mobile relay)

[0450] Model 5: When carrying equipment, the transmission distance to the nearest broadcast vehicle is up to 1 km (mobile relay)

[0451] Model 6: From motorcycle to OB van, transmission distance up to 1 km (mobile relay)

[0452] In all of the above models, the FPU transmitting / receiving station can be temporarily installed during use. Therefore, the location information of the FPU transmitting / receiving station may change each time it is used. Note that Models 1-3 may also include FPU receiving stations that are permanently installed in buildings, on mountains, etc. Hereinafter, the former are referred to as mobile stations, while the latter are referred to as fixed stations.

[0453] Furthermore, the FPU usage models envisioned in this paper include two types of usage: scheduled FPU use at predetermined locations and times, and unplanned use. The former corresponds to the use of models 1-6 for information programs, sports broadcasts, and the like, where specific locations and times of use of the radio station, pre-approved by the broadcaster, can be used for interference calculations. On the other hand, the latter, envisioned in models 1 and 5, requires that specific locations and times of use are known only in advance, making it impossible to implement specific usage scheduling for primary system protection.

[0454] Among the above-mentioned usage models, Models 1 and 5 mainly assume unplanned usage for news programs, etc. Note that planned usage is assumed in all of Models 1 to 6.

[0455] Table 1 below is an example of usage location information for each usage model and each usage form. In addition, of course, the information to be provided varies depending on the host system and its operator, and is therefore not limited to the information listed in Table 1 below.

[0456] Table 1

[0457]

[0458] One difference between FPU and the main system envisioned in related technologies such as CBRS and TVWS is that wireless stations can be moved, so for each usage model, the usage location is either a point or an area. Furthermore, in the case of unplanned use, the information indicating the usage location is simply a candidate area. In the embodiments of the present disclosure, information provided by the main system is analyzed, and the method for protecting the main system is switched according to the usage model and usage form.

[0459] Another feature is that the antenna of the communicating wireless station can move in response to the movement of the wireless station. For example, in the planned use of models 2 to 6, there is a possibility that the receiving station's antenna will rotate as the transmitting station moves, making it necessary to protect the entire rotation range. In the unplanned use of models 1 and 5, if the transmitting station detects that the transmitting station is in the candidate area, there is a possibility that the receiving station's antenna will point in that direction, making it necessary to protect the receiving station's antenna so that it faces anywhere within the antenna's rotation range.

[0460] <6-2. Information about the master wireless station>

[0461] As detailed specifications and usage schedule information of the master wireless station required to protect the master system, information input to the wireless station specification database or wireless station usage schedule database, or information input to the communication control device 40 through HTTP request / response, etc. is used.

[0462] <6-2-1. Detailed specifications of the master wireless station>

[0463] The detailed specifications of the master wireless station used in interference calculation may include, for example, the following information.

[0464] · Ability to specify wireless station information

[0465] Wireless station user information

[0466] Wireless station hardware information

[0467] Antenna information

[0468] Wireless interface information

[0469] Location information

[0470] Legal Information

[0471] The information capable of specifying an individual wireless station may include a serial number, a product model, a manufacturing number, manufacturer information, and the like.

[0472] As wireless station user information, it is possible to conceive of a user ID of the host system, a call sign, etc. The user ID may be generated independently by the wireless station user, or may be issued in advance by the communication control device 40. In the case of FPU, the wireless station user is a broadcaster operating the FPU.

[0473] Wireless station hardware information may include, for example, the installation information of the master wireless station. Contemplated wireless stations for the FPU include fixed receiving stations permanently installed in buildings or on hills, fixed receiving stations installed only during events, mobile transmitting / receiving stations mounted on broadcast vehicles, portable transmitting stations that can be carried by people, and transmitting stations installed in small vehicles such as motorcycles. Therefore, the installation information preferably includes information that can distinguish between these stations. For example, possible information may include an identifier for distinguishing between transmitting and receiving stations and an identifier indicating whether a station is mobile.

[0474] Antenna information generally refers to information indicating the performance, configuration, etc. of an antenna installed in a communication device. Generally, it may include information such as antenna installation height, tilt angle (downtilt angle), horizontal direction (azimuth angle), elevation angle (elevation angle), aiming (boresight), antenna peak gain, and antenna model.

[0475] In the case of FPU, there is a possibility that the antenna's installation height, tilt (downtilt), horizontal direction (azimuth), elevation (elevation), aiming (boresight), etc. may change during use, so this information can be given as a range of values.

[0476] Wireless interface information generally refers to information indicating the wireless interface technology configured in a communication device. In the case of FPU, the wireless interface information preferably includes the wireless station's compliance with the ARIB standard, examples of which include support for the Advanced FPU scheme, subframe length, modulation scheme, spatial multiplexing scheme, occupied frequency bandwidth (full mode, half mode), error correction code, and antenna power.

[0477] Location information generally specifies the geographic location of the master wireless station. Coordinate information may include latitude, longitude, altitude, and positioning error. Alternatively, for example, coordinates along the X, Y, and Z axes may be used, with a specific geographic location as the origin.

[0478] This location information can be input by the user of the master wireless station into the database or communication control device 40. The input location information is preferably coordinate information acquired by the user of the master wireless station using a positioning function. Alternatively, the master wireless station can input location information acquired by a positioning function installed on the master wireless station itself.

[0479] Furthermore, in cases where location information is not available, such as when the master wireless station is installed only when in use, location information does not necessarily need to be included in the detailed specifications. In such cases, location information is preferably included in the master wireless station's usage schedule information. In the case of fixed wireless stations, location information may be included in the detailed specifications.

[0480] Legal information generally includes information related to regulations established by radio wave regulatory agencies or equivalent bodies in various countries and regions that communications equipment must comply with, as well as certification information obtained by communications equipment. Information related to these regulations may typically include, for example, upper limits for out-of-band emissions and information related to receiver blocking characteristics. Certification information may typically include, for example, type approval information (such as FCC IDs and technical standards certificates of compliance), and legal / regulatory information that serves as the standard for obtaining certification (e.g., FCC regulation numbers, ETSI harmonized standard numbers, etc.).

[0481] <6-2-2. Using Scheduling Information>

[0482] As the usage schedule information for primary system protection, two types of usage patterns of the primary system are assumed: schedule information of planned usage and a priori information of unplanned usage.

[0483] The scheduling information for planned use and the prior information for unplanned use preferably include the following elements.

[0484] · Ability to specify wireless station information

[0485] Wireless station user information

[0486] · The identifier of the wireless station of the communicating party

[0487] Use dispatch identification information

[0488] Usage form information

[0489] Usage time

[0490] Use of location information

[0491] Antenna information during use

[0492] The information that can specify the wireless station and the wireless station user information may include information similar to the wireless station detailed specifications.

[0493] The communication partner identifier is information used to identify the communication partner's wireless station when the communication partner's wireless station is pre-determined in the usage schedule. This information is primarily entered into the database or communication control device 40 by the primary system user in advance according to the planned wireless station usage schedule. It may include information such as a serial number, product model, manufacturing number, and manufacturer information that can specify a single wireless station.

[0494] As the use schedule identification information, it is conceivable to use an ID that can specify the use schedule, etc. This ID may be generated independently by the wireless station user, or may be issued in advance by the communication control device 40 .

[0495] The usage pattern information may include information for distinguishing whether the usage pattern is planned use or unplanned use.

[0496] Usage times are used to specify the times during which the master wireless station will be used as part of a planned usage schedule and can only be included in the planned usage schedule information. This information primarily represents the times during which the user intends to use the wireless station as part of a planned usage schedule and is pre-entered into a database or communication control device by the master system user. Typically, this information consists of a pair of usage start and end times. The number of time pairs included in the same usage schedule does not necessarily have to be a single pair; multiple time periods can be included. Furthermore, the dates of multiple time periods included in the same usage schedule can differ from one another. Furthermore, schedules can include not only start and end times, but also repetitive schedules with dates, hours, minutes, seconds, and so on.

[0497] The usage location information is information used to specify the geographical location where the master wireless station is to be used. This information primarily refers to the location and area where the wireless station will be deployed during planned use, or the location or area where the wireless station may be deployed during unplanned use. This information is pre-entered by the master system user into the database or communication control device 40.

[0498] In the case of FPU, the position of the mobile station changes with each use schedule, so that each use schedule requires position information. In addition, depending on the operation mode of FPU, the wireless station is used while moving, so an area can be input as the use position information.

[0499] Furthermore, a mobile station mounted on a broadcast vehicle, motorcycle, person, helicopter, etc. is moving even during transmission, so it is preferable to input an area as the usage position information. For example, an area can be indicated by a set of three or more geographic coordinates.

[0500] Furthermore, in the case where the master wireless station is mounted on an object that moves in the air such as a helicopter, a three-dimensional space can be specified as the usage position information.

[0501] Furthermore, the usage location information may be a set of three or more geographical coordinates representing a dynamic protection area (DPA) described in Non-Patent Document 6, or a set of geographical points representing usage candidate locations.

[0502] Furthermore, in the case where the usage location information including the DPA is described in a database outside the communication control device 40 , the usage location information may be represented by an ID indicating the information.

[0503] The communication control device 40 protects the main system based on the information on the point and the area contained in the use position information.

[0504] Antenna information during use specifies the antenna specifications for the master wireless station during planned use and the assumed antenna specifications for unplanned use. This information primarily includes antenna installation height, tilt (downtilt), horizontal direction (azimuth), elevation (elevation), and aiming (boresight). It is pre-entered by the master system user into the database or communication control device 40.

[0505] In the FPU, etc., the antenna installation height, tilt angle (downtilt angle), horizontal direction (azimuth angle), elevation angle (elevation angle), aiming (boresight), etc. are set for each usage schedule, or the antenna installation height, tilt angle (downtilt angle), horizontal direction (azimuth angle), elevation angle (elevation angle), aiming (boresight), etc. change during use, so that this information can be given as a range of values.

[0506] Furthermore, in the case where the antenna information is described in a database outside the communication control device 40, the use position information may be represented by an ID indicating the information.

[0507] The communication control device 40 protects the main system based on the antenna information during use.

[0508] <6-2-3. Differences in Usage Scheduling Information Between Planned and Unplanned Use>

[0509] As described in (6-2-2. Use schedule information), the accuracy of information that can be used for aggregate interference power evaluation is different between the use schedule information planned for use and the use schedule information unplanned for use.

[0510] The planned usage schedule information is pre-entered by the primary wireless station user, such as a broadcaster. This information includes the correct location or area where the primary wireless station will be used, as well as the antenna information used during use, in addition to the time of use. By using this pre-registered, accurate usage schedule information, aggregate interference power can be estimated, eliminating the need to make large margins for protected points / areas and protected antenna information, thereby increasing the chances of using the secondary wireless station.

[0511] On the other hand, the usage schedule information for unplanned use does not pre-specify the usage time and does not provide accurate usage location information. It only indicates the possible points and areas of use, antenna information, etc., and does not provide accurate usage schedule information in advance. This requires margins for protected points / areas, protected antenna information, etc. when evaluating aggregated interference power. Consequently, the opportunity to use the secondary wireless station may be reduced compared to planned use.

[0512] The purpose of providing usage scheduling information for unplanned use is to reliably protect the main wireless station through the aggregated interference power evaluation with a margin even in a case where the aggregated interference power evaluation using correct information cannot be completed due to a short time from notifying the correct usage location of the main wireless station to actually using the main wireless station.

[0513] <6-3. Main System Protection>

[0514] The main system protection according to the embodiment of the present disclosure is performed by the communication control device 40 according to Figure 23 The process shown in the diagram is carried out. Figure 23 is a flow chart illustrating the process of protecting a host system.

[0515] First, the communication control device 40 acquires usage schedule information input to the database and the communication control device by the operator of the main system (step S61 ), and confirms whether there is usage schedule information to be evaluated (step S62 ).

[0516] If the acquired usage schedule information includes a new usage schedule or an existing usage schedule has been updated, the communication control device 40 performs processing related to primary system protection. For example, by comparing the information with a usage schedule having the same ID as the previously acquired usage schedule, it is possible to determine whether the existing usage schedule has been updated.

[0517] In the case where the communication control device 40 determines that there is usage schedule information to be evaluated (step S62; Yes), a primary system protection method is selected by using the usage schedule information (step S63). In addition, an algorithm for primary system protection may be selected.

[0518] The communication control device 40 performs primary system protection using the primary system protection method selected at step S63 (step S64 ), and stores the result in a database or the like (step S65 ).

[0519] Note that when the main system protection method is selected and implemented, the various information contained in the usage scheduling can be used as is, or the usage scheduling information of other wireless stations can be used to predict the usage scheduling information of the corresponding wireless station, and then the usage scheduling information of the corresponding wireless station can be used.

[0520] Subsequently, the communication control device 40 determines whether the usage form is planned usage (step S66 ).

[0521] When the communication control device 40 determines that the usage form is planned usage (step S66; Yes), the scheduler is set at the designated scheduled usage time (step S67). As a result, the communication control device 40 can determine the start of the use of the primary system.

[0522] Subsequently, the communication control device 40 determines whether there is scheduling information that has not been evaluated (step S68). In the case where the communication control device 40 determines that there is scheduling information that has not been evaluated (step S68; Yes), the processing returns to the process of step S62. On the other hand, in the case where the communication control device 40 determines that there is scheduling information that has not been evaluated (step S68; No), Figure 23 The process shown in the diagram ends.

[0523] In the above-mentioned step S62, in the case where the communication control device 40 determines that there is no usage schedule information to be evaluated (step S62; No), Figure 23 The process shown in the diagram ends.

[0524] Finally, the communication control device 40 stores the result of the primary system protection in a database, etc. This information can be read at the start of use of the primary system, and can include information on secondary wireless stations that need to stop radio waves or change parameters.

[0525] Note that primary system protection does not necessarily need to be performed for all wireless stations individually. Primary system protection can be performed while calculating by treating wireless stations with a shorter transmission distance as the same wireless station, or by treating two or more adjacent wireless stations as a single wireless station. Furthermore, if there are wireless stations with the same parameters, the evaluation results can be shared.

[0526] <6-3-1. Point Protection and Area Protection>

[0527] Depending on the protection object, the main system protection is roughly divided into point protection and area protection.

[0528] In point protection, the location where the wireless station is installed itself becomes the object of protection. In CBRS, as disclosed in Non-Patent Document 6, the Fixed Satellite Service (FSS) or the like becomes the object of point protection.

[0529] As point protection algorithms used in CBRS, there are methods such as iterative allocation processing (IAP) in which a margin of interference with a primary wireless station is allocated to secondary wireless stations, and a method in which a list of secondary wireless stations to be stopped is created by calculating the aggregate interference power from the secondary wireless stations. Of course, other point protection algorithms can also be used.

[0530] Note that the latter method is used to reduce the out-of-band interference of the FSS to within a predetermined value, and the list is called a clear list, and the secondary wireless stations included in the list are prohibited from using the corresponding channels for communication.

[0531] A similar algorithm can also be used when one or more wireless stations are available. Upon detecting the use of a primary wireless station, or upon notification of its use by a pre-defined scheduler, a frequency usage notification can be used to request that a secondary wireless station stop using radio waves or change parameters. In embodiments of the present disclosure, this type of point protection is referred to as dynamic point protection.

[0532] In regional protection, the entire coverage area of ​​fixed wireless stations, or the entire range where wireless stations are likely to exist, is protected. In CBRS, as disclosed in Non-Patent Document 6, regional protection targets include the coverage area of ​​Grandfathered Wireless Broadband Licenses (GWBLs) or Primary Access Licenses (PALs), as well as areas where federal incumbent systems such as shipborne radars are likely to move.

[0533] Multiple interference calculation reference points (hereinafter referred to as protection points) are set within the area to be protected, and the protection points need to be protected from the influence of the secondary system. Although any method can be used as a method for setting protection points, for example, the interior of the protection area can be divided into a grid shape, and the center of a predetermined grid can be set as a protection point. In CBRS, all intersections of the grid for every two latitude and longitude angles are set as protection points.

[0534] Although in CBRS, in order to protect the protection point, the stop lists of the IAP and the secondary wireless stations are calculated in a manner similar to point protection, the area protection algorithm used in the present invention is not limited thereto.

[0535] In addition, in CBRS, the area where the federal incumbent system may move is defined as a dynamic protection area (DPA). The DPA is obtained by dividing the area assumed to be used by the federal incumbent system into multiple areas. A plurality of protection points are set in each DPA in a manner similar to the usual protection object area, and a list of wireless stations that need to be stopped (mobile list) is created by calculating the aggregate interference from the secondary wireless station to all protection points within each DPA. When the use of the primary wireless station in the DPA is detected by the Environmental Sensing Capability (ESC) sensor, or the use of the primary wireless station is notified by a preset scheduler, the secondary wireless stations included in the mobile list are requested to stop the radio waves through the frequency use notification.

[0536] Furthermore, in the DPA of CBRS, the use of the primary system requires the anonymity of the sensor location information.

[0537] Although DPA in CBRS is only used when creating a mobility list, IAP can also be implemented by using DPA to instruct secondary wireless stations to change parameters.

[0538] In the present invention, region protection using DPA is distinguished as dynamic region protection.

[0539] Additionally, as another primary system protection, a simple inside-outside determination such as the exclusion zone in CBRS can be performed.

[0540] By using the usage schedule information, these types of primary system protection are periodically performed at arbitrary intervals. These results are stored in a database, etc., and when a scheduler, sensor, database, etc. actually detects the use of the primary wireless station, these types of information are notified to the secondary wireless station through frequency usage permission processing or frequency usage notification.

[0541] Note that the interval for protecting the primary system may be determined by the communication control device alone, or may be determined by the user of the primary system, the radio regulatory agency of each country or region, or an agency equivalent thereto.

[0542] In addition, when protecting the main system, if it is determined that the calculation cannot be completed in time before the scheduled usage time input into the usage scheduling information for planned use, it is not necessary to perform interference calculation, and the result of the main system protection processing performed by using the usage scheduling information for unplanned use can be used to protect the main wireless station.

[0543] <6-3-2. Main System Protection Method Selection Process>

[0544] In the primary system protection in CBRS, for each primary system, the protection method is determined by standards and laws, such as point protection for FSS, area protection for GBWL and PAL, and regional protection using DPA for military equipment such as shipborne radar.

[0545] On the other hand, in a main system with mobility of wireless stations envisioned in Japan, the communication control device 40 itself needs to switch and use the following two methods: a method in which point / area protection such as FSS, GWBL and PAL of CBRS is performed by a scheduler, and a method in which a dynamic protection point area such as DPA is set to protect the corresponding point or area when use is detected by a sensor, etc.

[0546] In CBRS, such a primary system is not envisioned, so that the communication control device 40 cannot autonomously determine, switch, and use the primary system protection method.

[0547] In the embodiment of the present disclosure, the communication control device 40 autonomously determines the primary system protection method by acquiring the usage schedule information of the wireless station from the primary system side and determining information included in the usage schedule information.

[0548] Specifically, the communication control device 40 (control unit 44) selects the primary system protection method according to the usage form of the wireless station provided from the primary system, usage location information, etc. Note that other usage schedule information may be used.

[0549] Even in the presence of multiple usage purposes of wireless stations in the same primary system and multiple usage schedules of the same wireless station, primary system protection such as aggregate interference power evaluation can be performed.

[0550] Figure 24 An example of a switching (selection) flow of the primary system protection method of the communication control device 40 is illustrated. Figure 24 is a flowchart illustrating an example of a switching (selection) process of a primary system protection method. Figure 24 The flow illustrated in FIG. 4 is executed by the control unit 44 of the communication control device 40 .

[0551] exist Figure 24In the example illustrated in FIG, the control unit 44 selects one protection method from a plurality of primary system protection methods including a dynamic or static protection method based on the usage form and usage location information of the primary wireless station, and protects the primary wireless station based on the selected protection method.

[0552] In addition, Figure 24 In the example illustrated in FIG, the control unit 44 selects a static protection method and performs the static protection method when the wireless station is used for planned use, and selects a dynamic protection method and performs the dynamic protection method when the wireless station is used for unplanned use.

[0553] In addition, Figure 24 In the example shown in the diagram, the control unit 44 selects point protection and performs point protection based on the protection object point of the wireless station determined according to the usage location information of the wireless station, and selects area protection and performs area protection based on the protection object area of ​​the wireless station determined according to the usage location information of the wireless station.

[0554] First, the communication control device 40 determines whether the usage form is planned usage or unplanned usage (step S71 ).

[0555] When the communication control device 40 determines that the use form is planned use (step S71; planned use), the communication control device 40 determines whether information of a point to be used or information of an area is included in the use position information (step S72).

[0556] When the communication control device 40 determines that the information of the point to be used is included in the use position information (step S72; point to be used), the point is point protected (step S73), and then the process ends. Figure 24 The process is shown in the diagram.

[0557] On the other hand, in the case where the communication control device 40 determines that the use location information includes information on the area information to be used (step S72; use area), the communication control device 40 performs area protection on the area (step S74), and then ends the process. Figure 24 The process is shown in the diagram.

[0558] In the case of FPU, examples of wireless stations that are subject to point protection include FPU transmission / reception stations of model 1, reception stations of models 2, 3, 4, and 6, etc. On the other hand, wireless stations that are subject to area protection include FPU transmission / reception stations of models 2 to 6, reception station of model 4, etc.

[0559] At the time of this selection, by using the usage location information of other wireless stations, the usage location information of the corresponding wireless station can be predicted, and after selecting the main system protection method using this information, point protection or area protection can be performed.

[0560] Furthermore, when the communication control device 40 determines that the form of use is unplanned use (step S71; unplanned use), the communication control device 40 determines whether the use location information includes information about a candidate use point or information about a candidate use area (step S75). A candidate use point is given in the use location information as a point that may be used. A candidate use area is given in the use location information as an area that may be used, such as a DPA.

[0561] When the communication control device 40 determines that the information on the candidate point to be used is included in the use position information (step S75; use candidate point), dynamic point protection is performed on the point (step S76), and then the process ends. Figure 24 The process is shown in the diagram.

[0562] On the other hand, in the case where the communication control device 40 determines that the use location information contains information on a plurality of use candidate areas such as DPA (step S75; use candidate area), the communication control device 40 performs dynamic area protection on the area (step S77), and then ends the process. Figure 24 The process is shown in the diagram.

[0563] Note that when making this selection, the communication control device can predict points where the corresponding wireless station may be used or candidate areas of use such as DPA by using usage location information of other wireless stations, etc., and can perform dynamic point protection or dynamic area protection after selecting the main system protection method using this information.

[0564] <6-3-3. Supplementary information on usage form and usage location>

[0565] The communication control device 40 can implement both static and dynamic protection based on usage patterns. For example, in the case of a usage pattern in which scheduled and unscheduled use alternate during the use of the master wireless station, the communication control device 40 can pre-calculate both static and dynamic protection methods and switch between them during the use of the master wireless station. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that switches between static and dynamic protection methods when the usage pattern switches between scheduled and unscheduled use.

[0566] Furthermore, the communication control device 40 can implement both point protection and area protection based on the usage location information. For example, if the usage location information indicates that the master wireless station switches between fixed use and mobile use, the communication control device 40 can pre-calculate both area protection and point protection, and switch between area protection and point protection during the master wireless station's use. In this case, when the usage location information switches between fixed use and mobile use, the control unit 44 of the communication control device 40 functions as a processing unit that switches between point protection and area protection.

[0567] Furthermore, the communication control device 40 does not necessarily need to switch between point protection and area protection, or between dynamic point protection and dynamic area protection, solely based on whether the primary wireless station's used location information is a point or an area. For example, if the accuracy of the primary wireless station's used location information itself, or the accuracy of the interference power from the secondary wireless station predicted based on the used location information, is low, the primary wireless station's protected point can be expanded to a protected area, and point protection can be switched to area protection to more reliably protect 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 based on the accuracy of the used location information or the accuracy of the interference power from the secondary wireless station predicted based on the used location information.

[0568] The accuracy of the usage location information of the master wireless station can be included in the detailed specifications or usage scheduling information of the master wireless station, for example. In addition, the accuracy of the interference power can be given in advance as a priori information, or can be predicted based on environmental data such as the terrain near the usage location. For example, in a case where the prediction accuracy of the propagation loss is reduced by predicting the surrounding environment based on map data, the communication control device 40 can switch from point protection to area protection. In addition, at the usage location of the application, when predicting the direction of the antenna of the protection object to be described later, if an extremely narrow range is calculated as the rotation range of the antenna, or the range cannot be calculated, the communication control device 40 can determine that the accuracy of the calculation result is likely to be low, and can switch the point protection to the area protection. Note that the switching criterion is not limited to this, and parameters related to the usage form and usage location information or values ​​calculated using parameters can be used as switching criterion.

[0569] Note that the extended protected area can be set, for example, within a certain distance from the actual location of use. This distance can be predetermined by law or regulation, or provided by the operator, management agency, or third-party organization of the host system. Furthermore, different values ​​can be specified depending on the surrounding environment.

[0570] Furthermore, if an abnormality is found in the result after calculation using point protection, the communication control device 40 can similarly switch from point protection to area protection and perform calculation again. For example, consider a case where the number of master wireless stations allowed to be used, their ratio to the total number, or the transmission power of a master wireless station is greater than or equal to a specified value.

[0571] Furthermore, the communication control device 40 may use the usage area of ​​other master wireless stations for area protection. Figure 25 : is a diagram illustrating an example of the positional relationship between the use position of the master wireless station and the use areas of other wireless stations. Figure 25 As shown in the diagram, even if the location of a master wireless station 1 used at a certain point is included in the usage area of ​​another master wireless station 2, and the usage times of the two master wireless stations overlap, master wireless station 1 can also use the usage area of ​​master wireless station 2 for area protection. In this case, if a calculation result is calculated for master wireless station 2, that result can be used to protect master wireless station 1. Conversely, if a calculation result is not calculated for master wireless station 2, the result for master wireless station 1 can be used to protect master wireless station 2. In this case, when the location of a first wireless station (e.g., master wireless station 1) is included in the usage area of ​​a second wireless station (e.g., master wireless station 2), and the usage times of the first and second wireless stations overlap, the control unit 44 of the communication control device 40 functions as a processing unit that performs area protection for the first wireless station using the usage area of ​​the second wireless station.

[0572] Furthermore, the communication control device 40 may switch the protection method based on the usage time of the master wireless station. Figure 26 : is a diagram illustrating an example of the relationship between a method of protecting a master wireless station and its usage time and a method of protecting other wireless stations and their usage time. Figure 26 As shown in the diagram, if the usage time of master wireless station 1 is not completely included in the usage time of master wireless station 2, the communication control device 40 can perform both point protection and area protection for master wireless station 1. For example, the communication control device 40 can perform area protection during the period when master wireless station 1 and master wireless station 2 are both in use. After the use of master wireless station 2 ends, while master wireless station 1 is still in use, the area protection can be switched to point protection. Of course, the reverse operation is also possible. In this case, 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 (e.g., master wireless station 1) to area protection using the second wireless station's usage area when the usage time of the first wireless station (e.g., master wireless station 1) overlaps with the usage time of the second wireless station (e.g., master wireless station 2).

[0573] Furthermore, even when the occupied frequency bands of the master wireless station 1 and the master wireless station 2 do not match, area protection using the area used by the master wireless station 2 can be performed. Figure 27 : is a diagram illustrating an example of an occupied frequency band of a master wireless station and an example of occupied frequency bands of other wireless stations. Figure 27 As shown in the diagram, when master wireless station 1 and master wireless station 2 use adjacent frequency channels, and a secondary wireless station uses a combination of these two channels as a secondary, the communication control device 40 can replace the point protection of master wireless station 1 with the area protection of master wireless station 2. In this case, 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 a first wireless station (e.g., master wireless station 1) and a second wireless station (e.g., master wireless station 2) use different frequency channels and there is a secondary wireless station using a frequency channel that partially overlaps with these two frequency channels.

[0574] Furthermore, the usage location information may include the antenna's installation location. In other words, the usage location information may include the height position. If the master wireless station is known to have moved or the antenna's installation location has been adjusted during installation, the antenna's installation location may be given as a range rather than a fixed value. Figure 28 : is a diagram illustrating an example of an antenna installation range. In the case where the installation position of the antenna is given as a range, that is, the use position information of the height direction is given as a range, as shown in FIG. Figure 28 As shown in the diagram, the communication control device 40 can set protection points at regular intervals in both the horizontal and vertical directions, and perform interference calculations for primary protection at each protection point. In this case, when the use location information is given as ranges in the horizontal and vertical directions, the control unit 44 of the communication control device 40 functions as a processing unit that performs interference calculations for primary protection at each protection point set in the horizontal and vertical directions. This type of primary protection can also be included in area protection. On the other hand, when the use location information is given as fixed values ​​in both the horizontal and vertical directions, the primary protection is point protection. In this case, switching between point protection and area protection can be performed according to the criteria described above.

[0575] Although static point / area protection is described above, these methods are also applicable to dynamic point / area protection.

[0576] <6-3-4. Supplementary information on point protection and area protection for planned use>

[0577] If the usage location information is not included in the usage schedule, or if the communication control device itself wishes to re-define the point or area to be protected, the communication control device 40 can use the usage location information or antenna information of other wireless stations that are the target of communication to predict the point or area to be protected, thereby selecting and implementing the primary system protection method. In this case, if the protection target point or area is not included in the wireless station usage schedule, or if the protection target point or area is to be re-determined, the control unit 44 of the communication control device 40 functions as a processing unit for predicting the protection target point or area.

[0578] Cases where a point or area is not included in the usage location information may include cases where the operator of the main system cannot provide the usage location information because the operator of the main system does not want to provide the usage location of the wireless station in advance, or the usage location is not known until before use, as in unplanned use.

[0579] For example, an area within a certain distance from a point where a wireless station serving as a communication target of a certain wireless station A is arranged may be set as a protection target area for the wireless station A. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that predicts a protection target point and a protection target area based on usage position information of a second wireless station different from a first wireless station serving as a wireless station of the master system.

[0580] In addition, for example, Figure 29 As shown in the diagram, by using the position information of the fixed station 200, an area that satisfies a required value of a carrier to interference and noise ratio (CINR) when the fixed station 200 receives a signal from the mobile station 300 at an arbitrary point is calculated, and the area that satisfies the required value can be set as a protection target area PA1 of the mobile station 300. For example, an area that satisfies a maximum distance D1 that can satisfy the required CINR can be set as the protection target area. Specifically, as an example, a range of coordinates (x, y) that satisfies the following expression (1) is set as the protection target area. Figure 29 In the example shown in the diagram, the control unit 44 of the communication control device 40 functions as a processing unit that calculates the communication quality (e.g., CINR) when the second wireless station receives a signal from the first wireless station (e.g., the fixed station 200) based on the use position information of the second wireless station (e.g., the mobile station 300), and predicts the protection target point and protection target area based on the calculated communication quality. Note that Figure 29 is a diagram illustrating an example of a protection target area of ​​a mobile station.

[0581] P Tx(dBm) -L(x,y) (dB) -I mean(dBm) >γTh(dB) (1)

[0582] Furthermore, the protection target area may be a range where the reception power from a certain mobile station satisfies a predetermined value at the fixed station. Specifically, as an example, a range of coordinates (x, y) satisfying the following expression (2) is set as the protection target area.

[0583] P Tx(dBm) -L(x,y) (dB) >P Rx,Th(dB) (2)

[0584] Furthermore, a range in which a signal from a fixed station satisfies a desired CINR or reception power may be set as a protection target area of ​​a mobile station.

[0585] The coordinates (x, y) in this case do not have to be a continuous range, but can be a set of protection points. In addition, the coordinates can be three-dimensional coordinates taking into account the antenna height.

[0586] Furthermore, the area in which the mobile station used in this case is used can be used as position information to predict the protection target area. For example, all positions of the mobile station 300b where the signal from the mobile station 300b always satisfies the required communication quality at the mobile station 300a (the mobile station 300a moves within a certain usage area (for example, usage area UA1)) can be set as the protection target area of ​​the mobile station 300b. Figure 30 As shown in the diagram, the maximum distance D2 that meets the required CINR and the required received power can be set as the protection object. Figure 30 As shown in the diagram, a range in which a signal from a mobile station 300a moving within a certain usage area (for example, usage area UA1) satisfies the required communication quality at the mobile station 300b can be set as a protection target range PA2 of the mobile station 300b. Figure 30 In the example shown in the diagram, the control unit 44 of the communication control device 40 functions as a processing unit that calculates the communication quality (e.g., CINR or received power) when the second wireless station receives the signal of the first wireless station (e.g., mobile station 300a) based on the use position information of the second wireless station (e.g., mobile station 300b), and predicts the protection target point and protection target area based on the calculated communication quality. Note that Figure 30 is a diagram illustrating an example of a protection target area of ​​a mobile station.

[0587] In the case where the area where the mobile station 300a is to be used can be specified but the location of the fixed station (200a or 200b) is unknown, as shown in FIG. Figure 31As shown in the diagram, the protection target area PA3 of the fixed station (200a or 200b) can be predicted based on the area (e.g., the use area UA1) where the mobile station 300a is to be used. For example, the range in which the signal from the mobile station 300a satisfies the required CINR or received power can be set as the protection target area of ​​the fixed station (200a or 200b). Note that Figure 31 is a diagram illustrating an example of a protection target area of ​​a fixed station.

[0588] Note that these protected areas (see Figures 29 to 31 ) Set a certain margin.

[0589] Furthermore, a protection target area can be predicted with reference to the creation of a PPA as described in Non-Patent Document 6.

[0590] Furthermore, when information about the range R1 of rotation of the antenna of the fixed station 200 or the mobile station 300a is given, as shown in FIG. Figure 32 As shown in the diagram, the protection target area PA4 of the mobile station 300b can be defined. In this case, the antenna rotation range can be a three-dimensional range that takes into account not only the azimuth and the boresight, but also the antenna installation height and the downtilt angle. In addition, the antenna rotation range with a certain margin can be set as the protection target area. Figure 32 In the example shown in the diagram, the control unit 44 of the communication control device 40 functions as a processing unit that predicts the protection target point and protection target area of ​​the primary system (for example, the mobile station 300b) based on the antenna information of the antenna to be used at the second wireless station (for example, the fixed station 200 or the mobile station 300a). Note that Figure 32 is a diagram illustrating an example of a protection target area of ​​a mobile station.

[0591] Furthermore, the protection object point / area of ​​the master wireless station can be estimated using information on wireless stations of different wireless systems.

[0592] For example, a range within a certain distance from the location of a fixed station of a wireless system EX1 can be set as the movement range of a mobile station of system EX1, and this movement range can be set as the protection target area for a mobile station of wireless system EX2, which is located alongside the mobile station of system EX1. In this case, control unit 44 of communication control device 40 functions as a processing unit that predicts the protection target point and protection target area of ​​the primary system (e.g., a mobile station of wireless system EX2) based on the use location information of a third wireless station of a wireless system different from the primary system (e.g., a fixed station of wireless system EX1).

[0593] For example, Figure 33As shown in the diagram, by calculating the required CINR at the fixed station 200 of the wireless system EX1, the movement range of the mobile station 300a_for_EX1 of the system EX1 can be predicted, and this movement range can be set as the protection target area PA5_for_300b of the mobile station 300b_for_EX2 of the wireless system EX2 arranged side by side with the mobile station 300a_for_EX1 of the system EX1. Note that Figure 33 FIG is a diagram illustrating an example of a protection target area of ​​a mobile station. Figure 33 In the example shown in the diagram, the control unit 44 of the communication control device 40 functions as a processing unit that calculates the communication quality when the first wireless station (e.g., the fixed station 200), which serves as the wireless station of the main system, receives the signal of the third wireless station based on the use location information of the third wireless station (e.g., the mobile station 300a), predicts the use location information of the third wireless station based on the calculated communication quality, and uses the predicted location information as a protection target point or protection target area for the wireless station of the main system (e.g., the mobile station 300b of the wireless system EX2). Note that Figure 33 It is a diagram illustrating an example of predicted protection target points and protection target areas.

[0594] For example, the wireless system EX1 may be a TSL for video transmission from an FPU receiving station to a studio of a broadcasting station, or a microwave FPU using a 5.7 GHz band, and the wireless system EX2 may be a 2.3 GHz FPU receiving station.

[0595] Furthermore, the antenna information when using a wireless station of another wireless system can be used to predict the location of the wireless station being used for communication, and this location can be set as the protection target point / area for the primary wireless station. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that predicts the location information of the wireless station of the primary system based on the antenna information of the antenna to be used by the third wireless station.

[0596] Furthermore, the point / area to be used by the master wireless station and the antenna information during use can be predicted using the position information and antenna information when using other systems, and through the prediction, the protection target point / area of ​​the master wireless station as the communication target can be estimated.

[0597] In addition, for example, Figure 34As shown in the diagram, by calculating the required CINR at the fixed station 200 of the wireless system EX1, the moving range of the mobile station 300a of the wireless system EX1 can be predicted, and this moving range can be set as the protection target area PA6_for_300b of the mobile station 300b of the wireless system EX2. And by calculating the required CINR at the mobile station 300b of the wireless system EX2, the protection target point / area PA7_for_300c of the mobile station 300c of the wireless system EX2 can be predicted. Figure 34 In the example illustrated in FIG, the control unit 44 of the communication control device 40 functions as a processing unit that calculates the communication quality of the fourth wireless station receiving a signal from the fifth wireless station (mobile station 300c), which is also a wireless station of the master system, by using the use location information of the third wireless station (for example, the mobile station 300a) as the use location information of the fourth wireless station (mobile station 300b), which is also a wireless station of the master system, and predicts the protection target point and protection target area of ​​the fifth wireless station based on the calculated communication quality. Note that Figure 34 It is a diagram illustrating an example of predicted protection target points and protection target areas.

[0598] Furthermore, even when using location information that already includes points or areas, such prediction methods can be used in combination. For example, in order to increase communication opportunities for the subsystem, the communication control device 40 can use more accurate protection target points / areas when making predictions.

[0599] <6-3-5. Supplementary information regarding point protection / area protection for unplanned use>

[0600] At the FPU receiving station in Model 1 of the FPU, points that may be used can be included in the usage location information, allowing dynamic point protection to be implemented for these points. Furthermore, at the FPU transmitting station in Model 1 and the transmitting / receiving station in Model 5, information about areas that may be used, such as DPA, can be provided, allowing dynamic area protection to be implemented for these areas.

[0601] Furthermore, in order to increase opportunities for using the secondary system, reliably protect the primary system, etc., the communication control device 40 may independently generate a DPA by dividing the protection target area into a plurality of areas according to a certain criterion.

[0602] The case where the communication control device 40 independently generates a DPA is not necessarily limited to the case where a DPA is not provided by the use schedule information, etc. For example, this case corresponds to the case where the use location information is predicted by a method similar to that in <6-3-4.> described above. Furthermore, even in the case where the use schedule information itself includes a DPA, the communication control device 40 can independently determine to newly create a DPA in order to increase the chances of using the secondary system and reliably protect the primary system.

[0603] In addition to being pre-set by the operator of the main system, public service agencies, etc., the parameters required for the communication control device to generate DPA (such as area segmentation size) can also be pre-set by management agencies, third-party agencies, etc., and can be obtained from usage scheduling information in external databases, main systems, etc.

[0604] In addition, regardless of whether these parameters are provided, the communication control device 40 can independently set parameters such as the area division size by using information such as the hardware performance and layout status of each communication device of the main system and the sub-system and the sensors used to detect the main system, the surrounding environment and the protection requirements.

[0605] For example, in order to more reliably protect the primary system, parameters such as the area division size required for generating a DPA for the communication control device 40 may be determined according to the detection accuracy of the use of the primary system. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that determines a DPA obtained by dividing the protection target area into a plurality of areas using parameters set based on the detection accuracy of the use of the wireless station.

[0606] For example, the DPA segment size can be determined based on the accuracy of the position information of the sensor or master wireless station. For example, if the positioning accuracy of the GPS or other positioning functions installed in the master wireless station is insufficient, by increasing the DPA segment size or allowing DPA overlap to provide a margin, the DPA can be set to ensure reliable protection even if the position of the sensor or master wireless station shifts. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that determines the DPA obtained by dividing the protection target area into multiple areas using parameters set based on the detection accuracy of the master system and the accuracy of the master system's position information.

[0607] Furthermore, for example, the division size of the DPA may be determined by reflecting the fluctuation in the detection accuracy of the primary system caused by the terrain and the surrounding environment such as buildings. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that determines the DPA obtained by dividing the protection target area into a plurality of areas using parameters set based on the fluctuation in the accuracy of the position information caused by the surrounding environment.

[0608] Furthermore, for example, different sizes of DPAs can be set in different areas based on the arrangement of sensors (example detection units) used to detect the use of the main system. In areas where sensors are densely arranged, a small DPA can be set, while in areas where sensors are sparsely arranged, a large DPA can be set. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that determines the DPAs obtained by dividing the protection target area into multiple areas using parameters set based on the arrangement information of the detection units detecting the main system.

[0609] In addition, for example, in a case where the main system usage detection accuracy can be ensured to be high, such as when the main wireless station has a high-precision positioning function and the location information is included in the usage notification of the main system, a grid containing only one protection point can be set as a DPA.

[0610] For example, to reduce the number of secondary wireless stations required to stop radio waves or change parameters due to detection of primary system use, and to increase the chance of using the secondary system, the DPA segmentation size can be set as small as possible within the scope of meeting the protection criteria.

[0611] Furthermore, two or more DPAs of different sizes can be set in the same area, and the DPA most suitable for detecting the use of the primary system can be selected to control the secondary system. For example, if the accuracy of the position information notified to the primary system is insufficient, a DPA of the largest possible size can be selected from multiple DPAs to fully protect the primary system even with the accuracy achieved. In this case, the control unit 44 of the communication control device 40 functions as a processing unit for determining the use of DPAs of different sizes in the same area.

[0612] Furthermore, the DPA segment size can be determined based on information about secondary wireless stations. For example, if the accuracy of the positioning function, such as GPS, installed on the secondary wireless station is insufficient, by increasing the DPA segment size or providing a margin by allowing DPAs to overlap, the DPA can be set to provide reliable protection even if the position of the secondary wireless station shifts. Accuracy can be determined not only by the performance of hardware such as sensors and positioning functions, but also by the terrain and surrounding environment such as buildings. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that determines the DPA obtained by dividing the protection target area into multiple areas using parameters set based on the accuracy of the positioning function of wireless stations of a wireless system different from the primary system.

[0613] In addition, if Figure 35As shown in the diagram, the entire mobile area of ​​the mobile station 300 can be divided into multiple areas (for example, areas MA1 to MA3), and the range in which the signal from the mobile station 300 to the fixed station 200 meets the required value can be calculated within each mobile area, and these ranges can be used as the DPA corresponding to the fixed station. In other words, the DPAs for each mobile area can overlap. In the division of the mobile area, the size can be changed according to the position of the mobile station 300 and the detection accuracy of the signal. Figure 35 In the example shown in the diagram, the control unit 44 of the communication control device 40 functions as a processing unit that divides the entire mobile area of ​​a wireless station (e.g., mobile station 300) into a plurality of areas and determines the protected area set for the wireless station (e.g., fixed station 200) serving as the communication target in each divided area as a DPA. Note that Figure 35 is a diagram illustrating an example of a dynamic protection target area for each of respective areas obtained by dividing the entire movement area.

[0614] <6-4. Point / area protection considering the antenna rotation range>

[0615] In the point / area protection of CBRS, it is envisioned that parameters related to the antenna rotation range of the wireless station to be protected (for example, downtilt angle, elevation angle, and azimuth angle) are given as values, as in the earth station of the fixed satellite service, or that there is no problem even if the antenna is pointed in any direction, as in the federal incumbent system.

[0616] On the other hand, at a main system such as an FPU, it is envisioned that each time a wireless station is used, parameters such as the downtilt angle, elevation angle, and azimuth angle of the antenna change, or that the antenna rotates during use and parameters such as the downtilt angle, elevation angle, and azimuth angle vary.

[0617] In an embodiment of the present disclosure, dynamic point / area protection is performed by using point / area protection that assumes changes in parameters such as downtilt, elevation, and azimuth due to rotation of the antenna of the wireless station during planned use, as well as parameters such as antenna direction notified at the time of unplanned use of the master wireless station.

[0618] <6-4-1. Point / area protection considering antenna rotation during planned use>

[0619] Based on specified criteria, multiple protected antenna directions are set within the rotational range of the currently used antenna, obtained from antenna information collected during use. This system then implements point or area protection, assuming the primary wireless station's antenna is facing the corresponding protected antenna direction, and instructs secondary wireless stations to implement primary system protection in all protected antenna directions. This ensures reliable protection of the primary system, even against rotational antennas during use.

[0620] For example, Figure 36 As shown in the diagram, when the range of the azimuth angle Azi_R1 in which the antenna rotates during use is given as the antenna information during use, the circle on the horizontal plane centered on the position P1 of the antenna is divided at each constant angle △θ within the range of the azimuth angle. Then, the direction from the center of the circle (i.e., the antenna position P1) to the center of each range of the divided circle is set as the protected object antenna direction PAD1. Point protection or area protection is performed in each set protected object antenna direction. Figure 36 In the example shown in the diagram, the control unit 44 of the communication control device 40 functions as a processing unit for determining a protected point or protected area by setting the protected antenna direction at regular intervals within the rotation range of the antenna currently in use at the wireless station. Furthermore, the control unit 44 functions as a processing unit for setting the protected antenna direction in two dimensions by dividing the range of the azimuth angle within which the antenna rotates during use by a fixed angle. Note that Figure 36 This is a diagram illustrating an example of setting the two-dimensional protection target antenna direction.

[0621] Furthermore, when the antenna information during use is given as the ranges of the downtilt angle and the azimuth angle Dt_R1 and Azi_R2, as shown in FIG. Figure 37 As shown in the diagram, a sphere with a given downtilt angle and azimuth angle range centered on the antenna position P2 is divided into constant angles Δφ and Δθ to create a three-dimensional grid. Then, the direction from the center of the sphere (i.e., the antenna position P2) to the center of each grid is set as the protected antenna direction PAD2. Figure 37 In the example shown in the diagram, the control unit 44 of the communication control device 40 functions as a processing unit that sets the three-dimensional direction of the protected object antenna by dividing the range of the azimuth angle and the range of the downtilt angle that the antenna rotates during use by a certain angle. Note that Figure 37 This is a diagram illustrating an example of setting the three-dimensional protection target antenna direction.

[0622] As an example of providing antenna information during use within a range of values, it is assumed that Models 2 to 6 of the FPU are used as planned use.

[0623] Furthermore, the range of antenna parameters such as downtilt, azimuth, and boresight during use can be predicted using the protected point and area of ​​the wireless station serving as the communication partner, antenna information during use, and the like, and the protected antenna direction can be set within this 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 being used, using the protected area or protected point of the wireless station serving as the communication partner.

[0624] For example, Figure 38 As shown in the diagram, 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 straight lines intersect at the position of wireless station B is set as the azimuth angle range Azi_R3 during use. The protected antenna direction described above can be set within the azimuth angle range Azi_R3. Figure 38 In the example shown in the diagram, the control unit 44 of the communication control device 40 functions as a processing unit that sets the angle formed by two tangent lines drawn from the wireless station to the protection target area of ​​the wireless station serving as the communication partner as the range of the azimuth angle of the antenna in use. Note that Figure 38 This is a diagram illustrating an example of setting the two-dimensional protection target antenna direction.

[0625] In addition, the range of downtilt angles and azimuth angles that the antenna can take during use can be estimated three-dimensionally. For example, the range of downtilt angles and azimuth angles that the antenna can take can be estimated based on the protected area of ​​the communication object. Figure 39 As shown in the diagram, the protection target area PA_WSA of wireless station A is projected onto a sphere centered on the antenna position P4_WSB of wireless station B. By setting the projection area on the sphere to the ranges of downtilt angles Dt_R2 and azimuth angles that the antenna of wireless station B can take during use, the protection target antenna direction can be set. Figure 39 In the example shown in the diagram, the control unit 44 of the communication control device 40 functions as a processing unit that projects the protection target area of ​​the wireless station that will become the communication partner onto a sphere centered on the wireless station of the primary system, and sets the projected area on the sphere as the range of azimuth and downtilt angles that the antenna can assume during use. Note that Figure 39 This is a diagram illustrating an example of setting the three-dimensional protection target antenna direction.

[0626] Furthermore, even when using existing antenna information, the direction of the antenna to be protected can be estimated in combination. For example, in situations where the communication partner is a wireless station operating in a complex area, by estimating antenna parameters more accurately than the pre-provided range, the primary system can be protected with greater precision, while also increasing communication opportunities for the secondary system.

[0627] Furthermore, the various parameters of the antenna do not necessarily have to be independent. For example, the range of values ​​of the azimuth angle can be given by a function using the value of the downtilt angle as an independent variable.

[0628] Furthermore, the protection target of the wireless station may be an area instead of a point. In this case, the primary system protection is performed after setting the protection target antenna direction for each protection point set within the protection target area.

[0629] All protection points within the same protection object area do not need to have the same protection object antenna information, and different protection object antenna directions can be set for each protection point. Figure 40 As shown in the diagram, at the protection points (pp1 to pp3) within the protection target area PA_WSA of wireless station A, the protection target antenna direction can be set in the direction where wireless station B exists (for example, the direction of the straight line connecting the protection points and the antenna position P5_WSA). In addition, the protection target antenna direction can have parameters other than azimuth. Wireless station B does not necessarily have to be a fixed station. Note that Figure 40 This is a diagram illustrating an example of setting a different protected object antenna direction for each protected point.

[0630] The angle when setting the antenna direction of the protected object can be predetermined by law, etc. according to the required accuracy of the main system protection, or can be provided by the operator of the main system, public service agency, management agency, third-party agency, etc.

[0631] Furthermore, the angle used to set the target antenna direction can be changed depending on the computing power of the communication control device 40. For example, if the communication control device 40 has high computing power, the target antenna direction can be set at an angle smaller than the preset angle. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that changes the interval used to set the target antenna direction according to the computing power of the communication control device 40.

[0632] <6-4-2. Dynamic point / area protection considering antenna directions notified during unplanned use>

[0633] The communication control device 40 performs dynamic point / area protection by using a dynamic antenna rotation range (hereinafter, dynamic antenna rotation is referred to as "DARR" as appropriate) obtained by dividing the antenna rotation range that can be used by the antenna of the wireless station to be protected based on a certain criterion, thereby instantaneously protecting the antenna direction notified when it is used unscheduled. In this case, 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 obtained by dividing the antenna rotation range that can be used by the antenna of the wireless station based on a certain criterion.

[0634] 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 use is actually detected, the communication control device 40 issues instructions to the secondary wireless stations in accordance with the instruction list corresponding to the DARR containing the notified antenna direction.

[0635] Furthermore, when creating a list of secondary wireless stations, the communication control device 40 can set multiple protected antenna directions in the DARR in a manner similar to that used in the plan, and then perform dynamic point / area protection. In this case, the control unit 44 of the communication control device 40 functions as a processing unit for setting multiple protected antenna directions in the DARR.

[0636] Furthermore, when DARR is used for dynamic area protection, DARR is set for each DPA, thereby creating a list of secondary wireless stations for each combination of DPA and DARR. Note that a common DARR may be used for all DPAs, or different DARRs may be used.

[0637] In addition, DARR can be provided as antenna information during use using scheduling information, or DARR preset by a management agency, a third-party agency, etc., and an operator of the main system, a public service agency, etc. can be obtained from an external database, etc.

[0638] Note that, in the case where the DARR is not provided and the usable antenna rotation range is contained in the antenna information during use, the communication control device 40 itself can generate the DARR based on the given antenna rotation range.

[0639] For example, Figure 41As shown in the diagram, the communication control device 40 can imagine a circle on the horizontal plane centered on the antenna (position P6_PWS) of the wireless station of the primary system, and can divide the range of azimuth angles Azi_R5 that the wireless station may use when it is not used in a planned manner into multiple ranges, and these ranges can be set as DARR (for example, DARR1 to DARR3). In DARR, the above-mentioned protection object antenna direction can be set, and an instruction list for the secondary wireless station can be created so that the primary system protection is achieved for all protection object antenna directions in DARR. Figure 41 In the example shown in the diagram, the control unit 44 of the communication control device 40 functions as a processing unit that sets a two-dimensional DARR by dividing the range of azimuth angles of antennas that can be used by a certain angle. Note that Figure 41 It is a diagram illustrating an example of setting a two-dimensional dynamic antenna rotation range.

[0640] In addition, for example, Figure 42 As shown in the diagram, the communication control device 40 can imagine a sphere centered on the antenna (position P7_PWS) of the wireless station of the primary system, and can set DARR by dividing the ranges of azimuth and downtilt angles Dt_R3 and Azi_R6 that the primary wireless station may take when used unplanned into several three-dimensional areas on the sphere. In each DARR, the above-mentioned protection target antenna direction can be set, and a list of instructions for the secondary wireless station can be created so that primary system protection is achieved for all protection target antenna directions in the DARR. Figure 42 In the example shown in the diagram, the control unit 44 of the communication control device 40 functions as a processing unit for setting three-dimensional DARR by dividing the range of azimuth angles and downtilt angles that the antenna of the wireless station of the primary system can take into account by a certain angle. Note that Figure 42 It is a diagram illustrating an example of setting a three-dimensional dynamic antenna rotation range.

[0641] Furthermore, in the case where the antenna rotation range that can be used as the antenna during use does not include information, similar to the case of planned use, the antenna rotation range that can be used can be estimated based on information on the use positions of other wireless stations that can become communication partners, and then used to set the DARR. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that sets the DARR using the estimated antenna rotation range that can be used based on information on other wireless stations that can become communication partners.

[0642] Furthermore, in situations other than those where the DARR cannot be acquired or where the antenna rotation range is not available, the communication control device 40 can also independently generate the DARR. For example, in order to increase the chances of using the secondary system and reliably protect the primary system, the communication control device 40 can independently determine and newly set the DARR.

[0643] In addition to being predetermined by the operator of the main system, public service agencies, etc., the parameters required for setting DARR, such as the segmentation size of DARR, can also be pre-set by management agencies, third-party agencies, etc., and can be obtained from usage scheduling information in external databases, main systems, etc.

[0644] In addition, regardless of whether these parameters are provided, the communication control device 40 can independently set parameters such as the segmentation size of DARR by using information such as the hardware performance and layout status of each communication device of the main system and the sub-system and the sensors used to detect the main system, the surrounding environment, and the protection requirements.

[0645] For example, in order to more reliably protect the primary system, parameters such as the segment size required for generating DARR for the communication control device 40 may be determined based on the detection accuracy of the antenna direction when the primary wireless station is in use. In this case, the control unit 44 of the communication control device 40 sets the use of the DARR processing unit using the parameters set based on the detection accuracy of the antenna direction when the wireless station is in use.

[0646] For example, the DARR segment size can be determined based on the sensor's antenna direction detection accuracy. For example, if the sensor's estimation accuracy of the primary wireless station's antenna direction is low, a margin can be provided by increasing the DARR segment size or overlapping the DARR with other DARRs. This allows for reliable protection of the primary system even if the detected antenna direction deviates. In this case, 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 antenna direction detection accuracy of the sensor that detects the antenna direction.

[0647] In addition, when the detection accuracy of the antenna direction of the main wireless station can be ensured to be high, for example, when the correct antenna direction when using the main wireless station is notified from the operator of the main system, the communication control device 40 can set a DARR that only includes one protected object antenna direction.

[0648] Furthermore, in order to increase the chances of using the secondary system, the communication control device 40 may set the division size of the DARR as small as possible within a range that satisfies a predetermined protection criterion.

[0649] Furthermore, the communication control device 40 can set two or more DARRs with different segmentation sizes within the possible antenna rotation range, select the most suitable DARR for detecting the use of the primary system, and control the secondary system. For example, if the detection accuracy of the antenna direction simultaneously notifying the primary system is insufficient, a DARR with the largest possible segmentation size can be selected from multiple DARRs, and instructions can be issued to the secondary wireless station to ensure that the primary system can be fully protected even with this accuracy. In this case, the control unit 44 of the communication control device 40 functions as a processing unit for setting two or more DARRs with different segmentation sizes within the possible antenna rotation range.

[0650] Furthermore, when the antenna direction notified in the primary system usage detection is given as a range, the communication control device 40 can issue an instruction to the secondary wireless station using a list of two or more DARRs that can cover the range. Furthermore, when the notified antenna direction includes multiple values, the instruction can be issued to the secondary wireless station using a list of two or more DARRs including multiple values.

[0651] Furthermore, if the antenna direction is not notified during detection of the use of the master system, the communication control device 40 can use the positional relationship between the master wireless stations to predict the antenna direction of the communicating master wireless station. In this case, even if an error occurs in the prediction result, the influence of the error can be minimized by providing an appropriate margin.

[0652] <6-4-3. Prediction of Antenna Parameter Range>

[0653] The method for predicting the range of antenna parameters varies depending on whether the wireless station location information provided in the usage schedule is a point or an area. An example of a method for predicting the range of antenna parameters will be described below. Note that the following description will use an example in which the communication control device 40 predicts the range of antenna parameters for a certain wireless station X using the protected point or area of ​​wireless station Y, the communication partner.

[0654] The communication control device 40 can predict the protection target point or area of ​​wireless station Y based on the reception quality of the signal transmitted from wireless station Y at wireless station X and the reception quality of the signal transmitted from wireless station Y at wireless station X, and then can predict the range of the antenna parameters of wireless station X using the obtained protection target point or area of ​​wireless station Y. Note that Figure 43 is a diagram illustrating an overview (No. 1) of predictions of a range of antenna parameters.

[0655] For example, Figure 43As shown in the diagram, the communication control device 40 can calculate the mobile range TAα_WSY of the wireless station Y in which the reception CINR when the wireless station X, which is a fixed station, receives a signal from the wireless station Y, which is a mobile station, satisfies a required value, and can set the mobile range TAα_WSY as the protection target area of ​​the wireless station Y. In addition, assuming that the antenna of the wireless station X can face the direction of the wireless station Y existing in any one of the protection target areas, the communication control device 40 can predict the antenna parameters within the range (for example, Figure 43 The range PMRα shown in the diagram is changed. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that calculates the movement range of the first wireless station (e.g., wireless station Y), based on the communication quality when the second wireless station (e.g., wireless station X), which is a fixed station, receives a signal from the first wireless station (e.g., wireless station Y), sets the calculated movement range as the protection target area for the first wireless station, and predicts the range of the antenna parameters of the second wireless station based on the protection target area. Note that, based on the assumption that the antenna of wireless station X always faces the direction of wireless station Y, the maximum value of the gain of the antenna of wireless station X required for calculating the reception CINR can be used.

[0656] Furthermore, the wireless station X that is the prediction target at this time does not necessarily have to be a fixed station, and may be a mobile station that provides a usage location within a certain range, or a fixed station that provides location information as an area. Figure 44 is a diagram illustrating an overview of the prediction of the range of antenna parameters (No. 2). In this case, Figure 44As shown in the diagram, assuming wireless station X is located at a protection point PPXβ set within wireless station X's protection target area PAβ_WSX (or movement range TAβ_WSX), the communication control device 40 can predict wireless station Y's movement range TAβ_WSY based on the reception quality (communication quality) when wireless station X receives a signal from wireless station Y. Furthermore, the communication control device 40 can predict the range PMRβ of wireless station X's antenna parameters based on the movement range TAβ_WSY. In this case, assuming a first wireless station is located at a protection point set within the protection target area of ​​the first wireless station (e.g., wireless station X), the control unit 44 of the communication control device 40 functions as a processing unit that predicts the movement range of a second wireless station (e.g., wireless station Y) based on the communication quality when the first wireless station receives a signal from the second wireless station, and predicts the range of the first wireless station's antenna parameters based on the predicted movement range. This operation can be performed independently for each protection point set within wireless station X's movement range, and the range of wireless station X's antenna parameters varies for each protection point. The range of the antenna parameters of wireless station X based on the movement range of wireless station Y can be predicted by a process similar to the method of predicting the range of the antenna parameters of wireless station A based on the protection target point or area of ​​wireless station B described in <6-4-1.>.

[0657] Note that even in the case where the moving range and protection object area of ​​wireless station Y are given in advance from an external entity as a usage schedule, the communication control device 40 can newly predict the moving range of wireless station Y by calculating, for each protection point, the range within and outside the moving range and protection object area where the reception quality is equal to or higher than a certain level, and can predict the range of antenna parameters of wireless station X for each protection point based on the newly predicted moving range.

[0658] In addition, in the case where the protection target area or point of the wireless station X is not given in the use schedule or the like, the communication control device 40 can predict the range of the antenna parameters using a method to be described below. Note that Figure 45 is a diagram illustrating an overview of the predictions for the range of antenna parameters (No. 3). Note that Figure 46 4 is a diagram illustrating an overview of the prediction of the range of antenna parameters. In the case where the protection target area or point of the wireless station X is not given in the use schedule, etc., as shown in FIG. Figure 45As shown in the diagram, the communication control device 40 can use the method described in <6-3-4.> to predict the moving range TAγ_WSX of the wireless station X based on the moving range TAγ_WSY of the wireless station Y, the protection object area or the protection object point, and can set the protection point PPXγ therein, and then for each protection point, the moving range, protection object area or protection object point of the wireless station Y can be used to predict the range PMRγ of the antenna parameters of the wireless station X. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that predicts the moving range of the second wireless station (for example, the wireless station X) based on the moving range, protection object area or protection object point of the first wireless station (for example, the wireless station Y), sets the protection point in the predicted moving range, and then for each protection point, predicts the range of the antenna parameters of the second wireless station based on the moving range, protection object area or protection object point of the first wireless station. In addition, as Figure 46 As shown in the diagram, the communication control device 40 can predict the range PMRδ of the antenna parameters of the wireless station X after newly calculating the movement range TAδ_WSY of the wireless station Y for each protection point. In this case, the control unit 44 of the communication control device 40 functions as a processing unit that newly calculates the movement range of the first wireless station for each protection point and then predicts the range of the antenna parameters.

[0659] In the case where the value of the antenna height of the wireless station X given as the usage schedule is within the range, the communication control device 40 can predict the range of the antenna parameter using the method to be described below. Note that Figure 47 5 is a diagram illustrating an overview of the prediction of the range of antenna parameters. When the value of the antenna height of the wireless station X given as the usage schedule is within the range (e.g., Figure 47 In the case of the range AHR shown in the diagram, if Figure 47 As shown in the diagram, regardless of whether the protection target of the wireless station X is a point or an area, the communication control device 40 can set the protection point not only in the horizontal direction but also in the height direction (for example, Figure 47 ) shown in the diagram, and the range of antenna parameters can be predicted for each protection point in a manner similar to the case where the value of the antenna height is not within the range. In this case, when the value of the antenna height of the first wireless station (for example, wireless station X) given as the usage schedule is within the 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 height direction, and predicts the range of antenna parameters for each set protection point, regardless of whether the protection object of the first wireless station is a protection object point or a protection object area. In a manner similar to the case where the value of the antenna height is not within the range, the moving range of the wireless station X can be arbitrarily predicted (for example, Figure 47The moving range TAε_WSX) and the protection target area (eg, Figure 47 The mobile range PA ε_WSX shown in the diagram, and the mobile range of wireless station Y (for example, Figure 47 (The range of movement TAε_WSY is shown in the diagram in the figure). When the range of movement is predicted, after setting the horizontal protection point in the predicted area, the height protection point can be set. Note that if the antenna height is not specified as a usage schedule, regulations, laws, main operators, etc. may determine a common value or range of antenna height for each master wireless station, and this common value or range can be used.

[0660] Furthermore, although the above description describes the prediction of the antenna rotation range in the case of static point / area protection, these methods are also applicable to the case of dynamic point / area protection.

[0661] <<7. Modifications>>

[0662] The above-described embodiments are examples, and various modifications and applications are possible.

[0663] <7-1. Modifications related to system configuration>

[0664] The communication control device 40 of this embodiment is not limited to the devices described in the above embodiments. For example, the communication control device 40 may be a device having functions other than the base station device 20 that controls secondary use of the frequency band in which frequency sharing is performed. For example, a network manager may have the functions of the communication control device 40 of this embodiment. In this case, the network manager may be, for example, a centralized baseband unit (C-BBU) having a network structure called a centralized radio access network (C-RAN), or a device including a C-BBU. In addition, a base station (including an access point) may have the functions of a network manager. These devices (such as a network manager) may also be regarded as the communication control device 40.

[0665] In the above embodiment, communication system 1 is the first wireless system, and base station device 20 is the second wireless system. However, the first and second wireless systems 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). Note that the wireless system described in this embodiment is not limited to a system consisting of multiple devices; the term "device," "terminal," etc. may be substituted as appropriate.

[0666] Furthermore, in the above embodiment, the communication control device 40 is a device belonging to the communication system 2. However, this device does not necessarily belong to the communication system 2. The communication control device 40 may be a device outside 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 the devices that constitute the communication system 2. Furthermore, multiple subsystems (communication systems 2) may exist. In this case, the communication control device 40 may manage multiple subsystems. In this case, each subsystem can be considered a second wireless system.

[0667] Furthermore, in frequency sharing, the existing system using the target frequency band is typically referred to as the primary system, while the secondary user is referred to as the secondary system. However, other terms can be used interchangeably. A macro cell in a heterogeneous network (HetNET) can be the primary system, while a small cell or relay station can be the secondary system. Furthermore, a base station can be the primary system, while relay UEs or vehicle UEs implementing D2D or vehicle-to-everything (V2X) within its coverage area can be the secondary system. Base stations are not limited to fixed base stations and can also be portable or mobile.

[0668] Furthermore, the interface between entities may be a wired interface or a wireless interface. For example, the interface between entities (communication devices, communication control devices, or terminal devices) in this embodiment may be a wireless interface that is not subject to frequency sharing. Examples of wireless interfaces that are not subject to frequency sharing include wireless interfaces provided by mobile communication companies via licensed frequency bands, wireless LAN communications using existing unlicensed frequency bands, and the like.

[0669] <7-2. Other Modifications>

[0670] The control device for controlling the wireless communication device 10, the base station device 20, the terminal device 30, the communication control device 40, or the proxy device 50 of this embodiment may be configured as a dedicated computer system or a general-purpose computer system.

[0671] For example, a program for executing the above-described operations is stored in a computer-readable recording medium such as an optical disc, semiconductor memory, magnetic tape, or floppy disk and distributed. Then, for example, by installing the program on a computer and executing the above-described processing, a control device is constructed. In this case, the control device may be an external device (e.g., a personal computer) of the wireless communication device 10, base station device 20, terminal device 30, communication control device 40, or proxy device 50. Furthermore, the control device may be an internal device (e.g., control unit 24, control unit 34, control unit 44, or control unit 54) of the wireless communication device 10, base station device 20, terminal device 30, communication control device 40, or proxy device 50.

[0672] In addition, the communication program mentioned above can be stored in a disk device in a server device on a network such as the Internet in a manner so that it can be downloaded to a computer. In addition, the above functions can be realized by cooperation between an operating system (OS) and application software. In this case, the other parts except the OS can be stored in a medium for delivery, or the other parts except the OS can be stored in a server device and downloaded to the computer.

[0673] Furthermore, among the processes described in the above embodiments, all or part of the processes described as being performed automatically may be performed manually, or all or part of the processes described as being performed manually may be performed automatically using known methods. Furthermore, unless otherwise specified, the processes, specific terms, and information including various data and parameters disclosed in the specification and drawings may be optionally modified. In one example, the various information illustrated in the various drawings is not limited to the information illustrated.

[0674] Furthermore, the components of the various devices illustrated in the drawings are conceptual in function and are not necessarily physically configured as shown. In other words, the specific form of distribution or integration of the various devices is not limited to the examples shown in the drawings; all or part of the devices may be functionally or physically distributed or integrated based on arbitrary units, depending on various loads and usage conditions.

[0675] Furthermore, appropriate combinations between the above-described embodiments are possible within the scope of not contradicting the details of the processing. In addition, the order of the respective steps illustrated in the sequence diagram or flowchart of this embodiment can be appropriately changed.

[0676] 8. Conclusion

[0677] As described above, according to an embodiment of the present disclosure, the communication control device 40 selects a protection method from a plurality of primary system protection methods, including dynamic or static protection methods, based on the usage pattern and usage location information of the wireless stations of the primary system. The communication control device 40 then protects the wireless stations of the primary system based on the selected protection method.

[0678] As a result, for example, in an FPU operated by a broadcasting company in Japan, the main system can be appropriately protected from the influence of the sub-system.

[0679] For example, one of the differences between FPU and the primary system envisioned in related technologies such as CBRS and TVWS is that wireless stations can be moved, so for each usage model, the usage location is either a point or an area. Furthermore, there are two types of usage, and the information indicated as the usage location in the case of unplanned use is simply a candidate area. In an embodiment of the present disclosure, the communication control device 40 can analyze the information provided by the primary system and switch the method of protecting the primary system according to the usage model and usage form. As a result, the primary system can be appropriately protected from the influence of the secondary system.

[0680] In addition, in the FPU, it is also a feature that the antenna of the wireless station serving as the communication partner can move in response to the movement of the wireless station. For example, in the planned use of the above-mentioned models 2 to 6, there is a possibility that the antenna of the receiving station rotates as the transmitting station moves, etc., making it necessary to protect the entire rotation range. In the unplanned use of the above-mentioned models 1 and 5, when the transmitting station detects that the transmitting station is used in the candidate area, there is a possibility that the antenna of the receiving station points in that direction, making it necessary to protect the antenna of the receiving station so as to face anywhere within the rotation range of the antenna. In an embodiment of the present disclosure, the communication control device 40 can implement point / area protection that takes into account the rotation of the antenna during planned use, and dynamic point / area protection that takes into account the antenna direction notified at the time of unplanned use. As a result, the main system can be appropriately protected from the influence of the secondary system.

[0681] Although various embodiments of the present disclosure have been described above, the technical scope of the present disclosure is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present disclosure. In addition, components in different embodiments and modifications can be appropriately combined.

[0682] In addition, the effects of the various embodiments described in this specification are merely examples and do not limit the disclosure herein, and other effects not described herein may also be achieved.

[0683] Furthermore, the present technology can take the following configurations.

[0684] (1) A communication control device comprising:

[0685] A control unit selects a protection method from a plurality of protection methods of the main system including dynamic or static protection methods based on the usage form and usage location information of the wireless station of the main system, and implements protection of the wireless station of the main system based on the selected protection method.

[0686] (2) The communication control device according to (1) above,

[0687] wherein the control unit

[0688] When the wireless station is in planned use, a static protection method is selected and implemented, and when the wireless station is in unplanned use, a dynamic protection method is selected and implemented.

[0689] (3) The communication control device according to (2) above,

[0690] wherein the control unit

[0691] Based on the protection target point of the wireless station determined according to the usage location information of the wireless station, point protection is selected and implemented;

[0692] Based on the protection target area of ​​the wireless station determined based on the usage location information of the wireless station, area protection is selected and implemented.

[0693] (4) The communication control device according to (3) above,

[0694] In which, when the protection object point and the protection object area are not included in the use schedule of the wireless station, and when the protection object point and the protection object area are newly set, the control unit predicts the protection object point and the protection object area.

[0695] (5) The communication control device according to (4) above,

[0696] wherein the control unit

[0697] The protection target point and the protection target area are predicted based on the use position information of a second wireless station different from a first wireless station serving as a wireless station of the master system.

[0698] (6) The communication control device according to (5) above,

[0699] wherein the control unit

[0700] The communication quality when the second wireless station receives the signal of the first wireless station is calculated based on the use position information of the second wireless station, and the protection target point and the protection target area are predicted based on the calculated communication quality.

[0701] (7) The communication control device according to (5) above,

[0702] wherein the control unit

[0703] The protection target point and the protection target area are predicted based on antenna information of an antenna used by the second wireless station.

[0704] (8) The communication control device according to (4) above,

[0705] wherein the control unit

[0706] The protection target point and the protection target area are predicted based on the use position information of a third wireless station of a wireless system different from the primary system.

[0707] (9) The communication control device according to (8) above,

[0708] wherein the control unit

[0709] Based on the usage location information of the third wireless station, the communication quality when the first wireless station, which is the wireless station of the main system, receives the signal of the third wireless station is calculated, and based on the calculated communication quality, the usage location information of the third wireless station is predicted, and the predicted location information is used as the protected object point or the protected object area.

[0710] (10) The communication control device according to (9) above,

[0711] wherein the control unit

[0712] By using the usage location information of the third wireless station as the usage location information of the fourth wireless station as the wireless station of the main system, the communication quality of the signal received by the fourth wireless station from the fifth wireless station as the wireless station of the main system is calculated, and the protection object point and the protection object area of ​​the fifth wireless station are predicted based on the calculated communication quality.

[0713] (11) The communication control device according to (8) above,

[0714] wherein the control unit

[0715] The use position information of the wireless station of the primary system is predicted based on the antenna information of the antenna used by the third wireless station.

[0716] (12) The communication control device according to (3) above,

[0717] wherein the control unit

[0718] A plurality of areas obtained by dividing the protection target area according to a certain criterion are determined as dynamic protection target areas.

[0719] (13) The communication control device according to (12) above,

[0720] wherein the control unit

[0721] A dynamic protection target area is determined, the dynamic protection target area being obtained by dividing the protection target area into a plurality of areas using a parameter set based on usage detection accuracy of the wireless station.

[0722] (14) The communication control device according to (13) above,

[0723] wherein the control unit

[0724] A dynamic protection target area is determined, the dynamic protection target area being obtained by dividing the protection target area into a plurality of areas using parameters set based on the detection accuracy of the main system and the position information accuracy of the main system.

[0725] (15) The communication control device according to (14) above,

[0726] wherein the control unit

[0727] A dynamic protection target area is determined, the dynamic protection target area being obtained by dividing the protection target area into a plurality of areas using parameters set based on a variation in the accuracy of the position information caused by a surrounding environment.

[0728] (16) The communication control device according to (13) above,

[0729] wherein the control unit

[0730] A dynamic protection target area is determined, the dynamic protection target area being obtained by dividing the protection target area into a plurality of areas using parameters set based on configuration information of a detection unit that detects the main system.

[0731] (17) The communication control device according to (12) above,

[0732] wherein the control unit

[0733] The dynamic protection object areas with different sizes are determined in the same area.

[0734] (18) The communication control device according to (12) above,

[0735] wherein the control unit

[0736] A dynamic protection target area is determined, the dynamic protection target area being obtained by dividing the protection target area into a plurality of areas using parameters set based on positioning function accuracy of wireless stations of a wireless system different from the primary system.

[0737] (19) The communication control device according to (12) above,

[0738] wherein the control unit

[0739] The entire movement area of ​​the wireless station is divided into a plurality of areas, and a protection target area set for the wireless station as a communication target in each of the divided areas is determined as the dynamic protection target area.

[0740] (20) The communication control device according to (3) above,

[0741] wherein the control unit

[0742] Point protection or area protection is implemented by setting the direction of the antenna to be protected at regular intervals within the rotation range of the antenna being used by the wireless station.

[0743] (21) The communication control device according to (20) above,

[0744] wherein the control unit

[0745] The two-dimensional direction of the antenna to be protected is set by dividing the range of the horizontal direction in which the antenna rotates during use by a certain angle.

[0746] (22) The communication control device according to (21) above,

[0747] wherein the control unit

[0748] The three-dimensional direction of the antenna to be protected is set by dividing the range of the horizontal direction and the range of the elevation angle of the antenna during rotation at a certain angle.

[0749] (23) The communication control device according to (20) above,

[0750] wherein the control unit

[0751] The rotation range of the antenna being used is estimated using the protection target area or protection target point of the wireless station serving as the communication partner.

[0752] (24) The communication control device according to (23) above,

[0753] The control unit

[0754] An angle formed by two tangent lines drawn from the wireless station to the protection target area of ​​the wireless station serving as the communication partner is set as a range of the horizontal direction of rotation of the antenna in use.

[0755] (25) The communication control device according to (23) above,

[0756] The control unit

[0757] The protection target area of ​​the wireless station as the communication partner is projected onto a sphere centered on the wireless station of the primary system, and the projection area on the sphere is set as the range of horizontal directions and elevation angles that the antenna can adopt during use.

[0758] (26) The communication control device according to (20) above,

[0759] wherein the control unit

[0760] According to its own computing capability, the interval when setting the antenna direction of the protected object is changed.

[0761] (27) The communication control device according to (3) above,

[0762] wherein the control unit

[0763] Dynamic point protection or dynamic area protection is implemented using a dynamic antenna rotation range obtained by dividing the rotation range that the antenna of the wireless station can adopt according to a certain criterion.

[0764] (28) The communication control device according to (27) above,

[0765] wherein the control unit

[0766] A plurality of protected object antenna directions are set within the dynamic antenna rotation range.

[0767] (29) The communication control device according to (27) above,

[0768] wherein the control unit

[0769] The two-dimensional dynamic antenna rotation range is set by dividing the range of horizontal directions of the usable antenna into predetermined angles.

[0770] (30) The communication control device according to (27) above,

[0771] wherein the control unit

[0772] The three-dimensional dynamic antenna rotation range is set by dividing the horizontal direction range and the elevation angle range of the antenna during use into predetermined angles.

[0773] (31) The communication control device according to (27) above,

[0774] wherein the control unit

[0775] The dynamic antenna rotation range is set using a possible antenna rotation range that is estimated based on information about other wireless stations that may become communication partners.

[0776] (32) The communication control device according to (27) above,

[0777] wherein the control unit

[0778] The dynamic antenna rotation range is set using parameters set based on the detection accuracy of the antenna direction when the wireless station is in use.

[0779] (33) The communication control device according to (32) above,

[0780] wherein the control unit

[0781] The dynamic antenna rotation range is set using parameters set based on the detection accuracy of the antenna direction by a detection unit that detects the antenna direction.

[0782] (34) The communication control device according to (27) above,

[0783] wherein the control unit

[0784] The dynamic antenna rotation range is set to have two or more different division sizes in the possible antenna rotation range. (35)

[0786] A communication control method,

[0787] Based on the usage form and usage location information of the wireless station of the main system, a protection method is selected from a plurality of main system protection methods including dynamic or static protection methods, and protection of the wireless station of the main system is implemented based on the selected protection method.

[0788] (36) The communication control device according to (2) above,

[0789] When the usage form is switched between planned usage and unplanned usage, the control unit switches and implements a static protection method and a dynamic protection method.

[0790] (37) The communication control device according to (3) above,

[0791] When the usage location information is switched between fixed usage and mobile usage, the control unit switches and implements the switching between the point protection and the area protection.

[0792] (38) The communication control device according to (3) above,

[0793] wherein the control unit

[0794] Switching between the point protection and the area protection is performed and implemented based on the accuracy of the used location information or the accuracy of the interference power from the secondary wireless station predicted based on the used location information.

[0795] (39) The communication control device according to (3) above,

[0796] When the usage location of the first wireless station is included in the usage area of ​​the second wireless station and the usage times of the first wireless station and the second wireless station overlap, the control unit implements the area protection of the usage area of ​​the second wireless station for the first wireless station.

[0797] (40) The communication control device according to (3) above,

[0798] During the period when the use time of the first wireless station overlaps with the use time of the second wireless station, the point protection of the first wireless station is switched to the area protection using the use area of ​​the second wireless station and implemented.

[0799] (41) The communication control device according to (3) above,

[0800] In which, when the first wireless station and the 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 control unit switches the point protection of the first wireless station to the area protection of the second wireless station.

[0801] (42) The communication control device according to (3) above,

[0802] When the use position information is given as ranges in the horizontal direction and the height direction, the control unit performs interference calculation for the main protection for each protection point set in the horizontal direction and the height direction.

[0803] (43) The communication control device according to (1) above,

[0804] wherein the control unit

[0805] Based on the communication quality when the second wireless station, which is a fixed station, receives a signal from the first wireless station, which is a mobile station, the moving range of the first wireless station is calculated, the calculated moving range is set as the protection object area of ​​the first wireless station, and the range prediction of the antenna parameters of the second wireless station is implemented based on the protection object area.

[0806] (44) The communication control device according to (1) above,

[0807] In which, it is assumed that the first wireless station is arranged at a protection point set within the protection object area of ​​the first wireless station, and the control unit predicts the moving range of the second wireless station based on the communication quality when the first wireless station receives a signal from the second wireless station, and implements the range prediction of the antenna parameters of the first wireless station based on the predicted moving range.

[0808] (45) The communication control device according to (1) above,

[0809] wherein the control unit

[0810] The moving range of the second wireless station is predicted based on the moving range, protection object area or protection object point of the first wireless station, and protection points are set in the predicted moving range. Then, for each set protection point, range prediction of the antenna parameters of the second wireless station is implemented based on the moving range, protection object area or protection object point of the first wireless station.

[0811] (46) The communication control device according to (45) above,

[0812] wherein the control unit

[0813] For each of the protection points, the moving range of the first wireless station is recalculated, and then the range prediction of the antenna parameters is performed.

[0814] (47) The communication control device according to (1) above,

[0815] In which, when the value of the antenna height of the first wireless station given as the usage schedule is within the range, the control unit sets the protection point not only in the horizontal direction but also in the height direction, regardless of whether the protection object of the first wireless station is a protection object point or a protection object area, and for each set protection point, implements the range prediction of the antenna parameters of the first wireless station according to the protection object area or the moving range of the second wireless station.

[0816] Reference Signs List

[0817] 1,2 Communication System

[0818] 10 Wireless communication equipment

[0819] 20 base station equipment

[0820] 30 terminal devices

[0821] 40 Communication control equipment

[0822] 50 proxy devices

[0823] 60 File Server

[0824] 21,31,41,51 Wireless communication unit

[0825] 22, 32, 42, 52 memory cells

[0826] 23,43,53 Network Communication Unit

[0827] 24,34,44,54 control units

[0828] 33 Input / Output Units

[0829] 211,311 receiving processing unit

[0830] 211a Wireless Receiver

[0831] 211b demultiplexer

[0832] 211c demodulator

[0833] 211d decoder

[0834] 212,312 Sending Processing Units

[0835] 212a encoder

[0836] 212b modulator

[0837] 212c Multiplexer

[0838] 212d Wireless Transmitter Unit

[0839] 213,313 antennas

[0840] 241,441,541 Acquisition Units

[0841] 242 Setting Unit

[0842] 243 Sending Unit

[0843] 244 Wireless Communication Control Unit

[0844] 442 Judgment Unit

[0845] 443 Notification Unit

[0846] 444 Communication Control Unit

[0847] 542 First sending unit

[0848] 543 Second sending unit

Claims

1. A communication control device, comprising: a control unit configured to select one protection method from a plurality of primary system protection methods including a dynamic or static protection method based on the usage form and usage location information of the wireless station of the primary system, and protect the wireless station of the primary system based on the selected protection method, The control unit is further configured to: When the wireless station is used for planned use, a static protection method is selected and performed, while when the wireless station is used for unplanned use, a dynamic protection method is selected and performed.

2. The communication control device according to claim 1, wherein the control unit Selecting a point protection based on the protection target point of the wireless station determined based on the use position information of the wireless station and performing the point protection, and Based on the protection target area of ​​the wireless station determined based on the usage position information of the wireless station, area protection is selected and performed.

3. The communication control device according to claim 2, in, When the protection target point and the protection target area are not included in the use schedule of the wireless station, and when the protection target point and the protection target area are newly set, the control unit Predict protected areas and points.

4. The communication control device according to claim 3, wherein the control unit The protection target point and the protection target area are predicted based on the use position information of the second wireless station different from the first wireless station as the wireless station of the master system.

5. The communication control device according to claim 4, wherein the control unit The communication quality when the second wireless station receives the signal of the first wireless station is calculated based on the use position information of the second wireless station, and the protection object point and the protection object area are predicted based on the calculated communication quality.

6. The communication control device according to claim 4, wherein the control unit Based on the antenna information of the antenna to be used by the second wireless station, a protection object point and a protection object area are predicted.

7. The communication control device according to claim 3, wherein the control unit The protection target point and the protection target area are predicted based on the use position information of the third wireless station of the wireless system different from the main system.

8. The communication control device according to claim 7, wherein the control unit Based on the usage location information of the third wireless station, the communication quality when the first wireless station, which serves as the wireless station of the main system, receives the signal of the third wireless station is calculated, the usage location information of the third wireless station is predicted based on the calculated communication quality, and the predicted location information is used as a protection object point or protection object area.

9. The communication control device according to claim 8, wherein the control unit By using the usage location information of the third wireless station as the usage location information of the fourth wireless station as the wireless station of the main system, the communication quality of the signal received by the fourth wireless station from the fifth wireless station as the wireless station of the main system is calculated, and the protection object point and protection object area of ​​the fifth wireless station are predicted based on the calculated communication quality.

10. The communication control device according to claim 2, wherein the control unit A plurality of areas obtained by dividing the protection target area according to a certain criterion are determined as dynamic protection target areas.

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

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

13. The communication control device according to claim 12, wherein the control unit A dynamic protection target area is determined, the dynamic protection target area being obtained by dividing the protection target area into a plurality of areas using parameters set based on fluctuations in the accuracy of position information caused by the surrounding environment.

14. The communication control device according to claim 10, wherein the control unit Dynamic protection object areas with different sizes are determined in the same area.

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

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

17. The communication control device according to claim 2, wherein the control unit Point protection or area protection is performed by setting the direction of the antenna to be protected at regular intervals within the rotation range of the antenna currently in use by the wireless station.

18. The communication control device according to claim 2, wherein the control unit Dynamic point protection or dynamic area protection is performed using a dynamic antenna rotation range obtained by dividing the rotation range of the antenna that can be adopted by the antenna of the wireless station according to a certain rule.

19. A communication control method, comprising: selecting a protection method from a plurality of main system protection methods including a dynamic or static protection method based on the usage form and usage location information of the wireless station of the main system, and protecting the wireless station of the main system based on the selected protection method, The communication control method further includes: When the wireless station is used for planned use, a static protection method is selected and performed, while when the wireless station is used for unplanned use, a dynamic protection method is selected and performed.

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