Communication control device, communication device, and communication control method

Abstract

A communication control device includes: a selection unit that selects, based on a protection object range, a communication device of a first radio system that is an object for calculating interference imposed by a communication device of a second radio system, the second radio system reusing frequency resources once used by the first radio system, and the protection object range being set above the communication device of the second radio system based on the position of the communication device of the second radio system.

Description

Technical Field

[0001] The present invention relates to a communication control device, a communication device, and a communication control method. Background Art

[0002] The problem that radio resources (wireless resources) that can be allocated to a wireless system (wireless device) are exhausted has emerged. Since all radio bands have been used by existing wireless systems (wireless devices), it is difficult to newly allocate radio resources to wireless systems. In this regard, in recent years, more efficient use of radio resources by using cognitive radio technology has begun to attract attention. In cognitive radio technology, radio resources are generated by using idle radio waves (white spaces) in time and space of existing wireless systems.

[0003] Citation List

[0004] Patent Documents

[0005] Patent Document 1: JP 2016-19134 A

[0006] Non-Patent Documents

[0007] Non-Patent Document 1: WINNF-TS-0247-V1.0.0 CBRS Certified Professional Installer Accreditation Technical Specification.

[0008] Non-Patent Document 2: WINNF-TS-0016-V1.2.1 Signaling Protocols and Procedures for Citizens Broadband Radio Service (CBRS): Spectrum Access System (SAS)-Citizens Broadband Radio Service Device (CBSD) Interface Technical Specification.

[0009] 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.

[0010] 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.

[0011] Non - Patent Document 5: WINNF - TS - 0096 - V1.2.0 Signaling Protocols and Procedures for Citizens Broadband Radio Service (CBRS): Spectrum Access System (SAS) - SAS Interface Technical Specification.

[0012] Non - Patent Document 6: WINNF - TS - 0112 - V1.4.1 Requirements for Commercial Operation in the U.S. 3550 - 3700MHz Citizens Broadband Radio Service Band.

[0013] Non - Patent Document 7: IEEE Std 802.19.1aTM - 2017 "Coexistence Methods for Geo - location Capable Devices Operating under General Authorization".

[0014] Non - Patent Document 8: 47 C.F.R Part 96 Citizens Broadband Radio Service, https: / / www.ecfr.gov / cgi - bin / text - idx?node=pt47.5.96#se47.5.96.

[0015] Non - Patent Document 9: WINNF - TS - 0245 - V1.0.0 Operations for Citizens Broadband Radio Service (CBRS): Priority Access License (PAL) Database Technical Specification.

[0016] Non - Patent Document 10: WINNF - TS - 0061 - V1.2.0 Test and Certification for Citizens Broadband Radio Service (CBRS); Conformance and Performance Test Technical Specification; SAS as Unit Under Test (UUT).

[0017] Non - Patent Document 11: WINNF - SSC - 0008 Spectrum Sharing Committee Policy and Procedure Coordinated Periodic Activities Policy. Summary of the Invention

[0018] Technical Problem

[0019] However, simply using idle radio waves may not necessarily achieve efficient use of radio resources. For example, in order to achieve efficient use of radio resources, it is necessary to effectively allocate idle radio waves to a radio system (radio device). However, in various radio wave usage patterns, it is not easy to effectively allocate idle radio waves.

[0020] In this regard, the present disclosure proposes a communication control device, a communication device, and a communication control method capable of achieving efficient use of radio resources.

[0021] Solution to the Problem

[0022] To solve the above problems, the communication control device according to the present disclosure includes: a selection unit that selects, based on a protection object range, a communication device of a first radio system that is an object for calculating interference imposed by a communication device of a second radio system, where the second radio system secondarily uses frequency resources once used by the first radio system, and the protection object range is set above the communication device of the second radio system based on the position of the communication device of the second radio system. Brief Description of the Drawings

[0023] Figure 1 It is an explanatory diagram illustrating an example of allocating interference margins to respective communication devices constituting a secondary system.

[0024] Figure 2 It is an explanatory diagram illustrating the hierarchical structure in CBRS.

[0025] Figure 3 It is an explanatory diagram illustrating the frequency band of CBRS.

[0026] Figure 4 It is a diagram illustrating a configuration example of a communication system according to an embodiment of the present disclosure.

[0027] Figure 5 It is a diagram illustrating a model in which communication control devices are distributed.

[0028] Figure 6 It is a diagram illustrating a model in which one communication control device centrally controls multiple communication control devices.

[0029] Figure 7 It is a diagram illustrating a configuration example of a terminal device according to an embodiment of the present disclosure.

[0030] Figure 8 It is a diagram illustrating a configuration example of a base station device according to an embodiment of the present disclosure.

[0031] Fig. 9 It is a diagram illustrating a configuration example of a communication control device according to an embodiment of the present disclosure.

[0032] Fig.10 It is a diagram illustrating a configuration example of an agent device according to an embodiment of the present disclosure.

[0033] Fig.11 It is an explanatory diagram illustrating an example of an interference model envisioned in an embodiment of the present disclosure.

[0034] Fig.12 It is an explanatory diagram illustrating another example of an interference model envisioned in an embodiment of the present disclosure.

[0035] Fig.13 It is an explanatory diagram for explaining a primary system protection method of the interference margin batch allocation type.

[0036] Fig.14 It is a diagram illustrating a situation where a remaining interference margin is generated.

[0037] Fig.15 It is a flowchart for explaining a primary system protection method of the interference margin successive allocation type.

[0038] Fig.16 It is a sequence diagram for explaining a registration process.

[0039] Fig.17 It is a sequence diagram for explaining an available spectrum inquiry process.

[0040] Fig.18 It is a sequence diagram for explaining a spectrum utilization grant process.

[0041] Fig.19 It is a state transition diagram for graphically illustrating the permitted state of radio wave transmission.

[0042] Fig. 20 It is a sequence diagram for explaining the spectrum usage notification process.

[0043] Fig.21 It is a sequence diagram for explaining the exchange process of management information.

[0044] Fig. 22 It is a diagram illustrating an example of a device that performs protected object selection and interference control.

[0045] Fig.23 It is a diagram illustrating an example of the communication parameter setting process of the communication device of the secondary system.

[0046] Fig.24 It is a diagram illustrating an example of the protected object selection process of the communication device of the primary system.

[0047] Fig.25 It is a diagram illustrating another example of the communication parameter setting process of the communication device of the secondary system.

[0048] Fig.26 It is a diagram illustrating an example of the protected object selection process for explaining the selection criteria.

[0049] Fig. 27 It is a diagram illustrating an example of setting the protected object range based on the elevation angle.

[0050] Fig.28 It is a diagram illustrating an example of the setting process of the protected object range based on the elevation angle.

[0051] Fig.29 It is a diagram illustrating an example of setting the protected object range based on the elevation angle.

[0052] Fig.30 It is a diagram illustrating an example of the protected object selection process for explaining the comparison between the protected object space and the position of the airborne communication device.

[0053] Fig.31 It is a diagram illustrating an example of setting the protected object range based on the elevation angle and height.

[0054] Fig.32 It is a diagram illustrating an example of the protected object selection process of the protected object range using height.

[0055] Fig.33 It is a diagram illustrating an example of the protected object space of the airborne communication device set according to the growth rate of the cross-sectional area relative to the height.

[0056] Fig.34 It is a diagram illustrating another example of the protected object space of an air communication device set according to the growth rate of the cross-sectional area relative to the height.

[0057] Fig.35 It is a diagram illustrating another example of the protected object space of an air communication device set according to the growth rate of the cross-sectional area relative to the height.

[0058] Fig.36 It is a diagram illustrating an example of the flight path of an air communication device.

[0059] Fig.37 It is a diagram illustrating an example of the correspondence between the time interval of the timing of protected object selection and the start and end points of the timing data of the flight path.

[0060] Fig.38 It is a diagram illustrating an example of the correspondence between the time interval of the timing of protected object selection and the start and end points of the timing data of the flight path.

[0061] Fig.39 It is a diagram illustrating an example of the correspondence between the time interval of the timing of protected object selection and the start and end points of the timing data of the flight path.

[0062] Fig.40 It is a diagram illustrating a model example of the calculation of the interference amount applied from the secondary system to the primary system.

[0063] Fig.41 It is a diagram illustrating an example of the calculation process of the cumulative interference amount.

[0064] Fig.42 It is a diagram illustrating an example of the calculation process of the interference amount to be applied based on the protected object selection result.

[0065] Fig.43 It is a diagram illustrating an example of the calculation process of the interference amount to be applied based on the protected object selection result.

[0066] Fig.44 It is a diagram illustrating an example of the calculation process of the interference amount to be applied based on the protected object selection result.

[0067] Fig.45 It is a diagram illustrating an example of the protected object selection result.

[0068] Fig.46 It is a diagram illustrating an example of the protected object selection result.

[0069] Fig.47 It is a diagram illustrating an example of the protected object selection result.

[0070] Fig.48 It is a diagram illustrating an example of the calculation process for the interference amount applied.

[0071] Fig.49 It is a diagram illustrating an example of the arrangement of reference points.

[0072] Fig.50 It is a diagram illustrating an example of the arrangement of reference points.

[0073] Fig.51 It is a diagram illustrating an example of the arrangement of reference points.

[0074] Fig.52 It is a diagram illustrating an example of the selection process for reference points.

[0075] Fig.53 It is a diagram illustrating an example of the definition of radial lines and reference points in three-dimensional space.

[0076] Fig.54 It is a diagram illustrating an example of the arrangement of reference points.

[0077] Fig.55 It is a diagram illustrating an example of the arrangement of reference points.

[0078] Fig.56 It is a diagram illustrating an example of the arrangement of reference points.

[0079] Fig.57 It is a diagram illustrating an example of the generalization of communication parameters.

[0080] Fig.58 It is a diagram illustrating an example of generalizing the parameter part in path loss calculation.

[0081] Fig.59 It is a diagram illustrating an example of generalizing the arrangement of reference points among multiple communication devices in a secondary system.

[0082] Fig.60 It is a diagram illustrating an example of the calculation process for the interference amount applied considering offline calculation and pre-calculation.

[0083] Fig.61 It is a diagram illustrating an example of a signaling process.

[0084] Fig.62 It is a diagram illustrating an example of a signaling process.

[0085] Fig.63 It is a diagram illustrating an example of a signaling process.

[0086] Fig.64It is a diagram illustrating an example of a signaling process.

[0087] Fig.65 It is a diagram illustrating an example of an application process of communication parameters. Detailed implementation manners

[0088] Based on the accompanying drawings below, embodiments of the present disclosure will be described in detail. Incidentally, in the following various embodiments, the same reference numerals are given to the same parts, and repeated descriptions will be omitted.

[0089] In addition, in this specification and the accompanying drawings, a plurality of components with substantially the same functional configurations can be distinguished by adding different numbers after the same reference numeral. For example, according to needs, a plurality of components with substantially the same functional configurations are distinguished as the air communication device 10A1 and 10A2. In addition, according to needs, a plurality of components with substantially the same functional configurations are distinguished as the ground communication terminal 10B1 and 10B2. For example, according to needs, a plurality of components with substantially the same functional configurations are distinguished as the terminal devices 201 and 202. In addition, according to needs, a plurality of components with substantially the same functional configurations are distinguished as the base station devices 301 and 302. For example, according to needs, a plurality of components with substantially the same functional configurations are distinguished as the communication control devices 401 and 402. However, in the case where it is not necessary to distinguish each of a plurality of components with substantially the same functional configurations, only the same reference numeral may be given. For example, in the case where it is not necessary to distinguish the terminal devices 201 and 202, it is simply referred to as the terminal device 20. In the case where it is not necessary to distinguish the base station devices 301 and 302, it is simply referred to as the base station device 30. In addition, in the case where it is not necessary to distinguish the communication control devices 401 and 402, it is simply referred to as the communication control device 40.

[0090] The present disclosure will be described in the order of the following items.

[0091] 1. Introduction

[0092] 1-1. Control of a wireless system for implementing spectrum sharing

[0093] 1-2. Outline of this embodiment

[0094] 1-3. Terms related to frequency and sharing

[0095] 2. Configuration of the communication system

[0096] 2-1. Overall configuration of the communication system

[0097] 2-2. Configuration of the terminal device

[0098] 2-3. Configuration of the base station device

[0099] 2-4. Configuration of the communication control device

[0100] 2 - 5. Composition of the proxy device

[0101] 3. Interference model

[0102] 4. Primary system protection method

[0103] 4 - 1. Batch allocation type of interference margin

[0104] 4 - 2. Successive allocation type of interference margin

[0105] 5. Explanation of each process

[0106] 5 - 1. Registration process

[0107] 5 - 2. Available spectrum inquiry process

[0108] 5 - 3. Spectrum utilization grant process

[0109] 5 - 4. Spectrum usage notification

[0110] 5 - 5. Supplements to each process

[0111] 5 - 6. Processes regarding terminal devices

[0112] 5 - 7. Processes occurring between communication control devices

[0113] 6. Protection object selection

[0114] 6 - 1. Operation entities for protection object selection and interference control

[0115] 6 - 2. Selection of interference protection objects for air communication devices

[0116] 6 - 3. Interference calculation

[0117] 6 - 4. Reference points for interference calculation

[0118] 6 - 5. Notification and setting of communication parameters

[0119] 7. Variants

[0120] 7 - 1. Variants regarding system composition

[0121] 7 - 2. Other variants

[0122] 8. Conclusion

[0123] 《1. Introduction》

[0124] In recent years, the problem of exhaustion of radio resources (e.g., frequencies) that can be allocated to wireless systems has emerged. However, since all radio bands have been used by existing wireless systems, it is difficult to allocate new radio resources. In this regard, in recent years, more efficient use of radio resources by using cognitive radio technology has begun to attract attention.

[0125] In cognitive radio technology, radio resources are generated by using idle radio waves (white spaces) in terms of time and space of existing wireless systems (e.g., dynamic spectrum sharing (DSA: dynamic spectrum access)). For example, in the United States, the legalization and standardization of the Citizens Broadband Radio Service (CBRS) using spectrum sharing technology are accelerating, aiming to open to the public the Federal use band (3.55 - 3.70 GHz) that overlaps with the 3GPP bands 42 and 43 worldwide.

[0126] Incidentally, cognitive radio technology not only contributes to dynamic spectrum sharing but also to improving the spectrum utilization efficiency of wireless systems. For example, in ETSI EN 303 387 and IEEE 802.19.1 - 2014, coexistence technologies between wireless systems using idle radio waves are defined.

[0127] <1 - 1. Control of Wireless Systems for Implementing Spectrum Sharing>

[0128] Generally, in spectrum sharing, the national regulatory authorities (NRAs) of each country / region are obliged to protect the wireless systems (primary systems) of primary users who are licensed or authorized to use frequency bands. Generally, the allowable interference reference value of the primary system is set by the NRA, and for the wireless systems of secondary users (secondary systems), it is required that the interference caused by sharing is lower than the allowable interference reference value.

[0129] To achieve spectrum sharing, for example, a communication control device (e.g., a frequency management database) controls the communication of the secondary system so as not to cause fatal interference to the primary system. The communication control device is a device that manages the communication of communication devices, etc. For example, the 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 the case of this embodiment, the communication control device corresponds to the communication control device 40 described later. The communication control device 40 will be described in detail later.

[0130] Here, a primary system is, for example, a system (e.g., an existing system) that preferentially uses radio waves in a predetermined frequency band compared to other systems such as a secondary system. In addition, a secondary system is, for example, a system that secondarily uses (e.g., dynamic spectrum sharing) radio waves in the frequency band used by the primary system. The primary system and the secondary system can each be composed of multiple communication devices or can be composed of one communication device. In the communication control device, an allowable interference amount is allocated to one or more communication devices such that the cumulative interference (interference accumulation) of one or more communication devices constituting the secondary system on the primary system does not exceed the allowable interference amount (also referred to as interference margin) of the primary system. At this time, the allowable interference amount can be an interference amount predetermined by the operator of the primary system, a public agency that manages radio waves, etc. In the following description, the term "interference margin" refers to the allowable interference amount. In addition, the accumulation of interference can be referred to as the cumulative applied interference power.

[0131] Figure 1 is an explanatory diagram illustrating an example of allocating the interference margin to each communication device constituting the secondary system. In Figure 1 the example, communication system 1 is the primary system, and communication system 2 is the secondary system. Communication system 1 includes communication device 101, etc. In addition, communication system 2 includes base station devices 301, 302, 303, etc. Incidentally, in Figure 1 the example, communication system 1 only includes one communication device 10, however, communication system 1 can have multiple communication devices 10. In addition, in Figure 1 the example, communication system 2 includes three base station devices 30, however, the number of base station devices 30 included in communication system 2 can be less than or greater than three. In addition, the wireless communication devices included in communication system 2 do not necessarily have to be base station devices. Incidentally, in Figure 1 the example, only one primary system ( Figure 1 communication system 1 in the example) and one secondary system ( Figure 1 communication system 2 in the example) are described, however, multiple primary systems and multiple secondary systems can be provided.

[0132] Each of communication device 101 and base station devices 301, 302, and 303 can transmit and receive radio waves. The allowable interference amount for communication device 101 is I accept . In addition, the interference amounts applied by base station devices 301, 302, and 303 to the predetermined protection point of communication system 1 (primary system) are applied interference amounts I1, I2, and I3, respectively. Here, the protection point is an interference calculation reference point for the protection of communication system 1.

[0133] The communication control device allocates the interference margin I acceptAllocated to a plurality of base station devices 30 such that the interference accumulation ( Figure 1 the received interference I1 + I2 + I3 shown in the figure) for a predetermined protection point of the communication system 1 does not exceed the interference margin I accept . For example, the communication control device allocates the interference margin I accept to each base station device 30 such that each of the interference amounts I1, I2, and I3 applied is I accept / 3. Alternatively, the communication control device allocates the interference margin I accept to each base station device 30 such that each of the interference amounts I1, I2, and I3 applied is I accept / 3 or less. Of course, the method of allocating the interference margin is not limited to this example.

[0134] The communication control device calculates the maximum allowable transmission power (hereinafter referred to as the maximum allowable transmission power) for each base station device 30 based on the allocated interference amount (hereinafter referred to as the allocated interference amount). For example, the communication control device calculates the maximum allowable transmission power of each base station device 30 by reverse calculation from the allocated interference amount based on propagation loss, antenna gain, etc. Subsequently, the communication control device notifies each base station device 30 of the calculated maximum allowable transmission power information.

[0135] <1-2. Summary of this embodiment>

[0136] Due to the evolution of cognitive radio technology, attention is being paid to spectrum sharing (dynamic spectrum access) that shares overlapping frequencies among multiple communication systems with different spectrum usage priorities.

[0137] In spectrum sharing, a method of centrally managing communication parameters such as the frequency band, transmission power, transmission filter, and radio access method to be used by a communication system through a database device can be adopted. In the TV White Spaces in the UK and the US and CBRS in the US, such databases are used in the form of GLDB and SAS.

[0138] One of the functions of the database is to avoid / reduce interference imposed by a low-priority communication system (secondary system, etc.) on a high-priority communication system (primary system, existing system, etc.) within a certain frequency band.

[0139] In the above Patent Document 1, in order to avoid / reduce fatal interference of the database device on the communication device of the primary system, a mechanism for determining whether a secondary system can reuse the frequency preferentially allocated to the primary system in terms of location and space by using the location information (latitude, longitude, altitude, etc.) of the communication device of the primary system, the location information of the communication device of the secondary system, and the assumed radio wave propagation characteristics is disclosed.

[0140] However, in the above Patent Document 1, only the feasibility (OK / NG) of the secondary frequency use of the secondary system is determined, and no more detailed determination is implemented. This means that even in a place / space where spectrum sharing between the secondary system and the primary system can actually be achieved by adjusting the communication parameters of the secondary system, there is a possibility that the operation of the secondary system is not allowed. In other words, there is a concern that the improvement of the utilization efficiency of limited frequency resources will be hindered.

[0141] In this regard, in the present embodiment, the communication control device (e.g., SAS) selects which air communication device of the primary system must be considered as the protection object against the interference from the communication device of the secondary system. Here, "interference" refers to, for example, interference from a single communication device or cumulative interference from multiple communication devices. In addition, the interference to the air communication device is, for example, interference to the communication link from the ground communication device (ground terminal device and ground fixed communication device) of the primary system to the air communication device, or interference from the secondary system to the communication link between air communication devices.

[0142] Here, one of the purposes of selecting the air communication device of the primary system is to control the interference imposed by the communication device of the secondary system on the air communication device of the primary system at or below a predetermined level.

[0143] When the interference is controlled at or below a predetermined level in this way, compared with the above Patent Document 1, the opportunity to achieve spectrum sharing between the secondary system and the primary system is increased, thereby the hindrance to the improvement of the utilization efficiency of limited frequency resources can be suppressed. As a result, the effective use of radio resources is achieved.

[0144] <1-3. Regarding terms related to frequency and sharing>

[0145] Incidentally, in the present embodiment, the primary system (Communication System 1) and the secondary system (Communication System 2) are set in a dynamic spectrum sharing environment. Hereinafter, the present embodiment will be described by taking CBRS established by the Federal Communications Commission (FCC) of the United States as an example. Incidentally, Communication System 1 and Communication System 2 of the present embodiment are not limited to CBRS.

[0146] Figure 2 is an explanatory diagram illustrating the hierarchy in CBRS. As Figure 2As shown in the figure, each user in the frequency band is grouped into one of three groups. Such a group is called a "layer". Each of these three groups has a defined hierarchy consisting of an existing layer, a priority access layer, and a general authorized access layer. In this hierarchy, the priority access layer is above the general authorized access layer, and the existing layer is above the priority access layer. Taking CBRS as an example, the system located in the existing layer (existing system) becomes the primary system, and the systems located in the general authorized access layer and the priority access layer become secondary systems.

[0147] The existing layer is a group of existing users within the shared frequency band. In CBRS, the Department of Defense (DOD), fixed satellite operators, and existing wireless broadband licensees (GWBLs) are defined as existing users. The "existing layer" is not required to avoid or limit interference to the lower-priority "priority access layer" and "general authorized access (GAA) layer". In addition, protect the "existing layer" from interference from the "priority access layer" and the "GAA layer". That is, users in the "existing layer" can use the frequency band regardless of the existence of other groups.

[0148] The priority access layer is a group of users with a license called a priority access license (PAL). The "priority access layer" is required to avoid or suppress interference to the "existing layer" with a higher priority than the "priority access layer", but is not required to avoid or suppress interference to the lower-priority "GAA layer". In addition, the "priority access layer" is not protected from interference from the "existing layer" with a higher priority, but is protected from interference from the lower-priority "GAA layer".

[0149] The general authorized access layer (GAA layer) is a group of all other users who do not belong to the above "existing layer" and "priority access layer". The "GAA layer" is required to avoid or suppress interference to the "existing layer" and "priority access layer" with a higher priority. In addition, the "GAA layer" is not protected from interference from the "existing layer" and "priority access layer" with a higher priority. That is, the "GAA layer" is the "layer" that is legally required for opportunistic spectrum use.

[0150] Incidentally, the hierarchy is not limited to these definitions. CBRS is usually called a three-layer structure, but it can have a two-layer structure. Typical examples include two-layer structures such as licensed shared access (LSA) or television white space (TVWS). LSA has a structure equivalent to the combination of the above "existing layer" and "priority access layer". In addition, TVWS adopts a structure equivalent to the combination of the above "existing layer" and "GAA layer". In addition, there can be four or more layers. Specifically, for example, the intermediate layer corresponding to the "priority access layer" can be further divided by priority. In addition, for example, the "GAA" layer can be divided by priority in the same way.

[0151] Figure 3 It is an explanatory diagram illustrating the frequency band of CBRS. Taking the above CBRS as an example, the primary system includes a military radar system, an existing wireless system, or a fixed satellite service (air-to-ground). Here, the most representative military radar system is a shipborne radar. In addition, the secondary system is a wireless network system composed of base stations and terminals called civilian broadband radio service devices (CBSD) and end-user devices (EUD). The secondary system has a higher priority and defines a priority access license (PAL) for licensed use allowing shared bandwidth and a general authorization access (GAA) equivalent to not requiring a license. Figure 3 Layer 1 shown in the diagram in the middle corresponds to Figure 2 the existing layer shown in the diagram in the middle. In addition, Figure 3 Layer 2 shown in the diagram in the middle corresponds to Figure 2 the priority access layer shown in the diagram in the middle. In addition, Figure 3 Layer 3 shown in the diagram in the middle corresponds to Figure 2 the general authorization access layer shown in the diagram in the middle.

[0152] Incidentally, the primary system (communication system 1) of this embodiment is not limited to Figure 3 the example shown in the diagram in the middle. Other types of wireless systems can be used as the primary system (communication system 1). For example, depending on the country / region / frequency band to which the system is applied, other wireless systems can be used as the primary system. For example, the primary system can be a television broadcast system such as a terrestrial digital video broadcast (DVB-T) system. In addition, the primary system can be a wireless system called a fixed system (FS). In addition, spectrum sharing can be carried out in other frequency bands. For example, typical examples include LSA and TVWS (television white space). In addition, the primary system can be a cellular communication system such as Long-Term Evolution (LTE) or New Radio (NR). In addition, the primary system can be an aeronautical radio system such as an aeronautical radio navigation service (ARNS). Of course, the primary system is not limited to the above wireless systems and can be other types of wireless systems.

[0153] The idle radio waves (white space) used by communication system 2 are not limited to the radio waves in the federal use frequency band (3.55 - 3.70 GHz). Communication system 2 can use radio waves in a frequency band different from the federal use frequency band (3.55 - 3.70 GHz) as idle radio waves. For example, when the primary system (communication system 1) is a television broadcast system, communication system 2 can be a system using TV white space as idle radio waves. Here, TV white space refers to the frequency band among the channels allocated to the television broadcast system (primary system) that is not used by the television broadcast system. At this time, the TV white space can be channels not used depending on the region.

[0154] The relationship between communication system 1 and communication system 2 is not limited to the spectrum 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 can be a network coexistence relationship between the same or different wireless systems using the same frequency.

[0155] Generally, in spectrum sharing, an existing system using the target frequency band is called the primary system, and the system of the secondary user is called the secondary system. However, when applying this embodiment to situations other than the spectrum sharing environment, these (primary system and secondary system) can be replaced with systems with other terms. For example, in a HetNet, a macro cell can be the primary system, and a small cell or a relay station can be the secondary system. In addition, a base station can be the primary system, and a relay UE or a vehicle UE that implements D2D or V2X within its coverage area can be the secondary system. The base station is not limited to a fixed base station and can be a portable / mobile base station. In this case, for example, the communication control device provided by the present invention can be set in a base station, a relay station, a relay UE, etc.

[0156] Incidentally, the term "frequency" appearing in the following description can be replaced with other terms. For example, the term "frequency" can be replaced with terms such as "resource", "resource block", "resource element", "channel", "component carrier", "carrier", and "subcarrier", as well as terms with similar meanings. Incidentally, frequency is a kind of radio resource. "Radio resource" can also be replaced with "frequency resource".

[0157] 《2. Configuration of Communication System》

[0158] Next, a communication system 100 according to an embodiment of the present disclosure will be described. The communication system 100 includes communication system 1 and communication system 2. Communication system 1 (the first wireless system) is a wireless communication system that performs wireless communication by using (using once) a predetermined frequency band. In addition, communication system 2 (the second wireless system) is a wireless communication system that performs wireless communication by secondarily using the frequency band used by communication system 1. For example, communication system 2 is a wireless communication system that performs dynamic spectrum sharing of the idle radio waves of communication system 1. Communication system 2 uses a predetermined radio access technology to provide wireless services to users or devices owned by users.

[0159] Here, "using once" means that a certain wireless system (for example, communication system 1) uses the frequency resources specifically allocated to this wireless system or the frequency resources preferentially allocated to this wireless system. In addition, "using secondarily" means that a certain wireless system (for example, communication system 2) uses the frequency resources specifically allocated to another wireless system (communication system 1) or the frequency resources preferentially allocated to another wireless system (communication system 1) with a lower priority than other wireless systems (communication system 1).

[0160] Here, communication systems 1 and 2 can be cellular communication systems, 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, it is assumed that "NR" includes New Radio Access Technology (NRAT) and Further EUTRA (FEUTRA).

[0161] NR is the next-generation (fifth-generation) radio access technology (RAT) of LTE. NR is a radio access technology that can support various use cases including enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low-latency communication (URLLC).

[0162] Incidentally, communication systems 1 and 2 are not limited to cellular communication systems. For example, communication system 2 can be other wireless communication systems, such as a wireless local area network (LAN) system, a television broadcast system, an aeronautical radio system, or a space wireless communication system.

[0163] In this embodiment, it is assumed that communication system 1 is the primary system and communication system 2 is the secondary system. As described above, there can be multiple communication systems 1 and multiple communication systems 2. Incidentally, in Figure 1 the example, communication system 1 is composed of one communication device 10 ( Figure 1 the communication device 101 illustrated in the figure), but as described above, the communication system can be composed of multiple communication devices 10. The configuration of the communication device 10 can be the same as or different from the configuration of the terminal device 20 or the base station device 30 described later.

[0164] <2-1. Overall Configuration of Communication System>

[0165] Communication system 100 generally consists of the following entities:

[0166] Communication devices (e.g., base station devices and proxy devices)

[0167] Terminal devices

[0168] Communication control devices

[0169] Incidentally, in the following description, the entities acting as communication devices are communication device 10, base station device 30, and / or proxy device 50. However, the entities acting as communication devices are not limited to these devices and can be other communication devices (e.g., terminal device 20 and communication control device 40).

[0170] Figure 4 This is a diagram illustrating a configuration example of the communication system 100 according to an embodiment of the present disclosure. As described above, the communication system 100 includes the communication system 1 and the communication system 2. Incidentally, the devices in the figure can also be considered as devices in a logical sense. That is, a part of the devices in the figure can be implemented by virtual machines (VMs), containers, docks, etc. that can be physically implemented on the same hardware.

[0171] As an example of the communication device 10, the communication system 1 includes the air communication devices 10A1 and 10A2, the ground terminal devices 10B1, 10B2, and 10B3, and the ground fixed communication device 10C1. Here, examples of the air communication device 10A include fixed satellite communication devices, mobile satellite communication devices, and drone communication devices. Incidentally, in Figure 4 the example, the communication system 1 includes two air communication devices 10A. However, the number of air communication devices 10A included in the communication system 1 can be less than or more than two. In addition, in Figure 4 the example, the communication system 1 includes three ground communication terminals 10B. However, the number of ground communication terminals 10B included in the communication system 1 can be less than or more than three. In addition, in Figure 4 the example, the communication system 1 includes one ground fixed communication device 10C. However, the number of ground fixed communication devices 10C included in the communication system 1 can be more than one. In Figure 4 the case of the example, each of the air communication devices 10A1 and 10A2, the ground terminal devices 10B1, 10B2, and 10B3, and the ground fixed communication device 10C1 can also be regarded as a communication system 1.

[0172] Examples of the communication system 2 include ground communication systems (such as 4G (LTE) or 5G (NR) cellular systems and wireless LAN systems). However, the communication system 2 can include air communication devices. The communication devices (terminal devices, base station devices, access point devices, etc.) of the communication system 2 communicate with the communication control device (management entity, geographical location database (GLDB), spectrum access system (SAS), etc.) 40 directly or via other communication devices (for example, communication devices within the core network (serving gateway (S-GW), packet gateway (P-GW), mobility management entity (MME), etc.) or communication devices within the Internet (servers, clouds, edges, routers, switches, etc.)).

[0173] The present invention is not limited to this example. The terminal device 20 of the communication system 2 can be a device for wireless backhaul called a customer premise equipment (CPE). In some cases (e.g., during interference calculation), such a terminal device 20 can be regarded as the base station device 30. That is, the CPE has the properties of both the terminal device 20 and the base station device 30.

[0174] The communication system 2 includes a terminal device 20, a base station device 30, a communication control device 40, and a proxy device 50. By operating the devices constituting the communication system 2 (e.g., communication devices such as wireless communication devices) in cooperation with each other, the communication system 2 provides wireless services to users or devices owned by users. The wireless communication device is a device having a wireless communication function, corresponding to Figure 4 the terminal device 20 and the base station device 30 in the example of

[0175] By operating the devices constituting the communication systems 1 and 2 (e.g., communication devices such as wireless communication devices) in cooperation with each other, the communication systems 1 and 2 provide wireless services to users or devices owned by users. The wireless communication device is a device having a wireless communication function. In Figure 4 the example of

[0176]

[0177] Incidentally, the communication control device 40 and the proxy device 50 may have a wireless communication function. In this case, the communication control device 40 and the proxy device 50 can also be regarded as wireless communication devices. In the following description, the wireless communication device can be simply referred to as a communication device. Incidentally, the communication device is not limited to a wireless communication device. For example, a device that does not have a wireless communication function and can only perform wired communication can be regarded as a communication device. Incidentally, in the present embodiment, the concept of "communication device" includes not only portable mobile devices such as portable terminals (e.g., terminal devices), but also devices installed on a structure or a moving body. The structure or the moving body itself can be regarded as a communication device. In addition, the concept of communication device includes not only terminal devices, but also base station devices and relay devices. The communication device is a processing device and an information processing device. The description of "communication device" appearing in the following description can be appropriately replaced with "transmitting device" or "receiving device". Incidentally, in the present embodiment, the concept of "communication" includes "broadcast". In this case, the description of "communication device" can be appropriately replaced with "broadcast device". Of course, the description of "communication device" can be appropriately replaced with "transmitting device" or "receiving device".

[0178] The communication system 2 may include a plurality of terminal devices 20, a plurality of base station devices 30, a plurality of communication control devices 40, and a plurality of proxy devices 50. In Figure 4 the example of Figure 4 as the terminal devices 20, the communication system 2 includes terminal devices 201, 202, 203, 204, etc. In addition, in Figure 4 the example of

[0179] By the way, in the following description, a wireless communication device may be referred to as a wireless system. For example, each of the air communication devices 10A1, 10A2, the ground terminal devices 10B1, 10B2, and 10B3, and the ground fixed communication device 10C1 is a wireless system. In addition, each of the base station devices 301 to 305 is a wireless system. In addition, each of the terminal devices 201 to 204 is a wireless system. By the way, in the following description, one or more communication devices 10 included in the communication system 1 are regarded as the first wireless system. However, each of one or more communication devices 10 included in the communication system 1, or the communication system 1 itself may be regarded as the first wireless system. In addition, in the following description, each of one or more base station devices 30 included in the communication system 2 is regarded as the second wireless system. However, the communication system 2 itself may be regarded as the second wireless system, and each of one or more terminal devices 20 included in the communication system 2 may be regarded as the second wireless system. When the communication control device 40 and the proxy device 50 have a wireless communication function, each communication control device 40 or each proxy device 50 may be regarded as the second wireless system.

[0180] By the way, a wireless system may be a system composed of a plurality of communication devices including at least one wireless communication device. For example, a system composed of one or more air communication devices 10A and one or more subordinate ground communication terminals 10B, or one or more ground fixed communication devices 10C may be regarded as a wireless system. In addition, a system composed of one or more base station devices 30 and one or more subordinate terminal devices 20 may be regarded as a wireless system. In addition, each of the communication systems 1 and 2 may also be regarded as a wireless system. In the following description, a communication system composed of a plurality of communication devices including at least one wireless communication device may be referred to as a wireless communication system, or simply as a communication system. By the way, a system composed of a plurality of communication devices including one wireless communication device may be regarded as the first wireless system or the second wireless system.

[0181] Incidentally, in this embodiment, a system means a collection of multiple components (devices, modules (parts), etc.). At this time, all components constituting the system may be within the same housing, or may not be within the same housing. For example, multiple devices housed in separate housings and connected by wired and / or wireless connections are a system. In addition, a device in which multiple modules are housed in one housing is also a system.

[0182] [Terminal device]

[0183] The terminal device 20 is a communication device having a communication function. The terminal device 20 is generally a communication device such as a smart telephone. The terminal device 20 may be a user terminal such as a mobile telephone, a smart device (smart telephone or tablet computer), a wearable terminal, an Internet of Things (IoT) device, a personal digital assistant (PDA), or a personal computer. The terminal device may be referred to as a user equipment, a user terminal, a user station, a mobile terminal, a mobile station, etc.

[0184] The terminal device 20 can perform sidelink communication with other terminal devices 20. When performing sidelink communication, the terminal device 20 can use an automatic retransmission technique such as hybrid automatic repeat request (ARQ) (HARQ). Incidentally, the wireless communication (including sidelink communication) used by the terminal device 20 can be wireless communication using radio waves, or can be wireless communication using infrared rays or visible light (optical radio).

[0185] The terminal device 20 can be a mobile device. Here, the mobile device is a mobile wireless communication device. At this time, the terminal device 20 can be a wireless communication device installed on a moving body, or can be the moving body itself. For example, the terminal device 20 can be a vehicle moving on a road, such as a car, a bus, a truck, or a motorcycle, or a wireless communication device installed on the vehicle. Incidentally, the moving body can be a mobile terminal, or can be a moving body moving on land (in the narrow sense of the ground), underground, on water, or in water. In addition, the moving body can be a moving body moving within the atmosphere, such as a drone or a helicopter, or can be a moving body moving outside the atmosphere, such as an artificial satellite.

[0186] The terminal device 20 can be connected to multiple base station devices or multiple cells simultaneously for communication. For example, when a base station device supports a communication area via multiple cells (e.g., pCell and sCell), through carrier aggregation (CA) technology, dual connectivity (DC) technology, or multi-connectivity (MC) technology, the multiple cells are bundled together, enabling communication between the terminal device 20 and the base station device 30. Alternatively, through coordinated multi-point transmission and reception (CoMP) technology, the terminal device 20 and multiple base station devices 30 can communicate via cells of different base station devices 30.

[0187] Incidentally, the terminal device 20 does not have to be used by a person. The terminal device 20 can be a machine installed in a factory or a sensor in a building, as in the so-called machine type communication (MTC). In addition, the terminal device 20 can be a machine-to-machine (M2M) device or an Internet of Things (IoT) device. In addition, the terminal device 20 can be a device equipped with a relay communication function, such as represented by device-to-device (D2D) or vehicle-to-everything (V2X). In addition, the terminal device 20 can be a device called a customer premise equipment (CPE) used in wireless backhaul, etc. In addition, the terminal device 20 can be a wireless communication device installed on a moving body, or can be the moving body itself.

[0188] [Base station device]

[0189] The base station device 30 (second wireless system) is a wireless communication device that performs wireless communication with the terminal device 20 or other communication devices (other base station devices 30 and other proxy devices 50). The base station device 30 is a type of communication device. The base station device 30 is, for example, a device corresponding to a radio base station (Node B, eNB, gNB, etc.) or a wireless access point. The base station device 30 can be a wireless relay station. The base station device 30 can be a road base station device, such as a roadside unit (RSU). In addition, the base station device 30 can be an optical extension device called a remote radio head (RRH). In this embodiment, the base station of the wireless communication system can be referred to as the base station device. Incidentally, the radio access technology used by the base station device 30 can be cellular communication technology or wireless LAN technology. Of course, the radio access technology used by the base station device 30 is not limited to these and can be other radio access technologies.

[0190] The base station device 30 does not necessarily have to be fixed and can be installed in a moving object such as a car. In addition, the base station device 30 does not necessarily have to exist on the ground, and the communication device function can be set in an object existing in the air or in space, such as an airplane, a drone, a helicopter, and a satellite, or in an object existing on the sea or in the sea, such as a ship and a submarine. In this case, the base station device 30 can perform wireless communication with other fixed-installed communication devices.

[0191] Incidentally, the concept of base station equipment (also known as a base station) includes not only a donor base station but also a relay base station (also known as a relay station or relay station equipment). The concept of a base station also includes an access point. In addition, the concept of a base station includes not only a structure having the functions of a base station but also equipment installed in the structure.

[0192] The structure is, for example, a building such as an office building, a house, a tower, a station facility, an airport facility, a port facility, or a stadium. Incidentally, the concept of a structure includes not only buildings but also non-building structures such as tunnels, bridges, dams, fences, and iron pillars, as well as facilities such as cranes, doors, and windmills. In addition, the concept of a structure includes not only structures on land (on the ground in the narrow sense) or underground but also water structures such as docks and artificial floating islands, as well as underwater structures such as ocean observation facilities.

[0193] The base station equipment 30 can be a donor station or a relay station. In addition, the base station equipment 30 can be a fixed station or a mobile station. A mobile station is a wireless communication device configured to be movable (e.g., base station equipment). At this time, the base station equipment 30 can be equipment installed on a moving body or can be the moving body itself. For example, a relay station equipment having mobility can be regarded as the base station equipment 30 as a mobile station. In addition, equipment that originally has mobility and has the functions of a base station (at least a part of the functions of a base station equipment), such as a vehicle, a drone, and a smart phone, also corresponds to the base station equipment 30 as a mobile station.

[0194] Here, the moving body can be a mobile terminal such as a smart phone or a mobile phone. In addition, the moving body can be a moving body moving on land (on the ground in the narrow sense) (e.g., vehicles such as cars, bicycles, buses, trucks, motorcycles, trains, and maglev trains), or can be a moving body moving underground (e.g., in a tunnel) (e.g., a subway).

[0195] The moving body can be a moving body moving on water (e.g., ships such as passenger ships, cargo ships, or hovercraft), or can be a moving body moving in water (e.g., submersible ships such as submersibles, submarines, and unmanned submarines).

[0196] The moving body can be a moving body moving in the atmosphere (e.g., aircraft such as airplanes, airships, and drones), or can be a moving body moving outside the atmosphere (e.g., artificial celestial bodies such as artificial satellites, spaceships, space stations, and probes). A moving body moving outside the atmosphere can be called a cosmic moving body.

[0197] The base station device 30 can be a ground base station device (ground station device) installed on the ground. For example, the base station device 30 can be a base station device arranged in a structure on the ground, or can be a base station device installed in a moving body moving on the ground. More specifically, the base station device 30 can 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 30 can be the structure or the moving body itself. "On the ground" is not only on land (in the narrow sense of the ground), but also on the broad ground including underground, above water and in water.

[0198] Incidentally, the base station device 30 is not limited to a ground base station device. The base station device 30 can be a non-ground base station device (non-ground station device) capable of floating in the air or in the universe. For example, the base station device 30 can be an aircraft station device or a satellite station device.

[0199] An aircraft station device is a wireless communication device capable of floating in the atmosphere, such as an aircraft. The aircraft station device can be a device carried on an aircraft or the like, or can be the aircraft itself. Incidentally, the concept of an aircraft includes not only heavy aircraft such as airplanes and gliders, but also light aircraft such as hot air balloons and airships. In addition, the concept of an aircraft includes not only heavy and light aircraft, but also rotary-wing aircraft such as helicopters and gyrocopters. Incidentally, the aircraft station device (or the aircraft carrying the aircraft station device) can be an unmanned aerial vehicle such as a drone.

[0200] Incidentally, the concept of an unmanned aerial vehicle also includes an unmanned aircraft system (UAS) and a tethered UAS. In addition, the concept of an unmanned aerial vehicle includes a light unmanned aircraft system (LTA: UAS lighter than air) and a heavy unmanned aircraft system (HTA: UAS heavier than air). In addition, the concept of an unmanned aerial vehicle also includes a high altitude UAS platform (HAP).

[0201] A satellite station device is a wireless communication device capable of floating outside the atmosphere. The satellite station device can be a device carried on a cosmic moving body such as an artificial satellite, or can be the cosmic moving body itself. The satellite serving as the satellite station device can be any satellite among low earth orbit (LEO) satellites, medium earth orbit (MEO) satellites, geostationary earth orbit (GEO) satellites, and highly elliptical orbit (HEO) satellites. Of course, the satellite station device can be a device carried on a low earth orbit satellite, a medium earth orbit satellite, a geostationary earth orbit satellite, or a highly elliptical orbit satellite.

[0202] As described above, the base station device 30 may be a relay station device. The relay station device is, for example, an aeronautical station or an earth station. The relay station device can be regarded as a kind of the above-mentioned relay device. An aeronautical station is a radio station installed on the ground or on a moving body moving on the ground to communicate with an aeronautical station device. On the other hand, an earth station is a radio 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 can be a small earth station such as a very small aperture terminal (VSAT).

[0203] Incidentally, the earth station can be a VSAT control earth station (also called a master station or a HUB station), or can be a VSAT earth station (also called a slave station). In addition, the earth station can be a radio station installed on a moving body moving on the ground. For example, a shipborne earth station (ESV) is an earth station carried on a ship. In addition, the earth station can also include an aircraft earth station installed on an aircraft (including a helicopter) and communicating with a satellite station. In addition, the earth station can include an aeronautical earth station installed on a moving body moving on the ground and communicating with the aircraft earth station via a satellite station. Incidentally, the relay station device can be a portable mobile radio station communicating with a satellite station or an aircraft station.

[0204] The size of the coverage area of the base station device 30 can also be as large as a macro cell or as small as a pico cell. Of course, the size of the coverage area of the base station device 30 can be extremely small like a femto cell. In addition, in the case where the base station device 30 has beamforming capabilities, a cell or a service area can be formed for each beam.

[0205] The base station device 30 can be used, operated, and / or managed by various entities. For example, it can be envisioned that the base station device 30 is a mobile network operator (MNO), a mobile virtual network operator (MVNO), a mobile virtual network enabler (MVNE), and a neutral host network (NHN) operator, an enterprise, an educational institution (such as a school corporation and a local government education committee), a real estate (such as a building and an apartment) manager, an individual, etc. Of course, the entities using, operating, and / or managing the base station device 30 are not limited to this.

[0206] The base station device 30 can be installed and / or operated by an operator, or can be installed and / or operated by an individual. Of course, the installation / operation entity of the base station device 30 is not limited to this. For example, the base station device 30 can be jointly installed and operated by multiple operators or multiple individuals. In addition, the base station device 30 can be a shared facility used by multiple operators or multiple individuals. In this case, the installation and / or operation of the facility can be carried out by a third party different from the users.

[0207] The base station device 30 operated by an operator is generally connected to the Internet via a core network. In addition, the base station device 30 is operated, managed, and maintained through a function called operation, administration, and maintenance (OA&M). Incidentally, the communication system 2 can, for example, have a network manager that integrally controls the base station devices 30 in the network.

[0208] [Communication control device]

[0209] The communication control device 40 is a device that manages the base station device 30. For example, the communication control device 40 is a device that controls the wireless communication of the base station device 30. For example, the communication control device 40 is a device that determines communication parameters (also called operation parameters) used by the base station device 30 and gives permission or instructions to the base station device 30.

[0210] At this time, the communication control device 40 can be a network manager that integrally controls wireless devices in the network. Taking ETSI EN 303 387 and IEEE 802.19.1-2014 as examples, the communication control device 40 can be a control device that controls radio wave interference between wireless devices, such as a spectrum manager / coexistence manager. In addition, for example, a registration location security server (RLSS) defined in IEEE 802.11-2016 can also be the communication control device 40. In addition, in a spectrum sharing environment, databases (database servers, devices, systems) such as a geographical location database (GLDB) and a spectrum access system (SAS) can also be the communication control device 40.

[0211] Incidentally, when the communication system 2 is a cellular communication system, the communication control device 40 can be a device that constitutes the core network. For example, the core network CN is an evolved packet core (EPC) or a 5G core network (5GC). When the core network is the EPC, the communication control device 40 can, for example, be a device having the function of a mobility management entity (MME). In addition, when the core network is the 5GC, the communication control device 40 can, for example, be a device having the function of an access and mobility management function (AMF). Incidentally, even when the communication system 2 is a cellular communication system, the communication control device 40 does not necessarily have to be a device that constitutes the core network. For example, the communication control device 40 can be a device that acts as a radio network controller (RNC).

[0212] Incidentally, the communication control device 40 may have the function of a gateway. For example, when the core network is an EPC, the communication control device 40 may be a device having the function of a Serving Gateway (S-GW) or a Packet Data Network Gateway (P-GW). In addition, when the core network is 5G, the communication control device 40 may be a device having the function of a User Plane Function (UPF). Incidentally, the communication control device 40 does not necessarily have to be a device constituting the core network. For example, consider a core network of W-CDMA or cdma2000. In this case, the communication control device 40 may be a device acting as a Radio Network Controller (RNC).

[0213] Basically, the control target of the communication control device 40 is the base station device 30, but the communication control device 40 may also control the subordinate terminal devices 20. In addition, the communication control device 40 may control multiple secondary systems. In this case, the communication system 2 may be regarded as a system including multiple secondary systems.

[0214] In addition, there may be multiple communication control devices 40 in one communication system 2. Figure 5 is a diagram illustrating a model in which the communication control devices 40 are distributed. In this case, multiple communication control devices 40 (in the Figure 5 example, the communication control device 401 and the communication control device 402) exchange information on the managed base station devices 30 with each other, and perform calculations for frequency allocation and interference control of necessary frequencies.

[0215] The communication control device 40 may be a master-slave device. Figure 6 is a diagram illustrating a model (so-called master-slave model) in which one communication control device centrally controls multiple communication control devices. In the Figure 6 example, the communication control device 403 is the master communication control device, and the communication control devices 404 and 605 are slave communication control devices. In the case of such a system, the master communication control device may control multiple slave communication control devices and make decisions centrally. In addition, for load balancing, etc., the master communication control device may transfer or revoke decision-making authority for each slave communication control device.

[0216] Incidentally, the communication control device 40 can obtain necessary information for its role from entities other than the terminal device 20, the base station device 30, and the proxy device 50. Specifically, the communication control device 40 can obtain information required for protection, such as the location information of the primary system, from a database (regulatory database) managed and operated by, for example, a national / regional radio wave management agency. Examples of the regulatory database include the Universal Licensing System (ULS) operated by the Federal Communications Commission. Other examples of information required for protection can include out-of-band emission (OOBE) limits, adjacent channel leakage ratio (ACLR), adjacent channel selectivity, fading margin, and / or protection ratio (PR), etc. For these examples, it is preferable to use them when the values are fixedly given by law.

[0217] As another example, it can be envisaged 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 CBRS in the United States. In addition, in the case where the communication device or the 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 the terminal.

[0218] [Proxy device]

[0219] The proxy device 50 (proxy system) is a device that communicates with the communication control device 40 on behalf of one or more communication devices (e.g., the base station device 30). The proxy device 50 is also a type of communication device.

[0220] The proxy device 50 can be a domain proxy (DP) defined in Non-Patent Document 2 etc. Here, the DP refers to an entity that communicates with the SAS on behalf of each of multiple CBSDs or a network composed of multiple CBSDs. Incidentally, 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 on behalf of one or more communication devices. A network manager that integrally controls the base station devices 30 in the network can be regarded as the proxy device 50.

[0221] Incidentally, the proxy system can be composed of one device, or can be composed of multiple devices. The communication between the proxy device 50 and the base station device 30 can be wired communication, or can be wireless communication. Similarly, the communication between the proxy device 50 and the communication control device 40 can be wired communication, or can be wireless communication.

[0222] Incidentally, the communication device replaced (represented) by the proxy device 50 is not limited to the base station device 30, and may be, for example, the terminal device 20. In the following description, one or more communication devices (e.g., one or more base station devices 30) replaced (represented) by the proxy device 50 may be referred to as subordinate communication devices (e.g., subordinate base station devices 30).

[0223] Next, the configurations of the respective devices included in the communication system 100 will be specifically described.

[0224] <2-2. Configuration of the Terminal Device>

[0225] Next, the configuration of the terminal device 20 will be described. Figure 7 FIG. is a diagram illustrating an example of the configuration of the terminal device 20 according to an embodiment of the present disclosure. The terminal device 20 is a communication device that wirelessly communicates with the base station device 30 and / or the communication control device 40. Incidentally, in the present embodiment, the concept of a communication device (or a wireless communication device) includes not only base station devices and proxy devices, but also terminal devices. A communication device (or a wireless communication device) may be referred to as a wireless system.

[0226] The terminal device 20 includes a wireless communication unit 21, a storage unit 22, an input / output unit 23, and a control unit 24. Incidentally, Figure 7 The configuration shown in the figure is a functional configuration, and the hardware configuration may be different therefrom. In addition, the functions of the terminal device 20 may be distributed and implemented in a plurality of physically separated configurations.

[0227] The wireless communication unit 21 is a wireless communication interface that wirelessly communicates with other communication devices (e.g., the base station device 30 and other terminal devices 20). The wireless communication unit 21 operates under the control of the control unit 24. The wireless communication unit 21 supports one or more wireless access methods. For example, the wireless communication unit 21 supports both NR and LTE. The wireless communication unit 21 may support other wireless access methods, such as W-CDMA and cdma2000.

[0228] The wireless communication unit 21 includes a reception processing unit 211, a transmission processing unit 212, and an antenna 213. The wireless communication unit 21 may include a plurality of reception processing units 211, a plurality of transmission processing units 212, and a plurality of antennas 213. Incidentally, in the case where the wireless communication unit 21 supports multiple wireless access methods, each unit of the wireless communication unit 21 may be configured separately for each wireless access method. For example, the reception processing unit 211 and the transmission processing unit 212 may be configured separately for LTE and NR. The configurations of the reception processing unit 211 and the transmission processing unit 212 are the same as those of the reception processing unit 311 and the transmission processing unit 312 of the base station device 30 described later.

[0229] The storage unit 22 is a storage device capable of reading and writing data, such as a dynamic random access memory (DRAM), a static RAM (SRAM), a flash memory, and a hard disk. The storage unit 22 functions as a storage device of the terminal device 20.

[0230] The input / output unit 23 is a user interface for exchanging information with the user. For example, the input / output unit 23 is an operation device for the user to perform various operations, such as a keyboard, a mouse, operation keys, and a touch panel. Alternatively, the input / output unit 23 is a display device such as a liquid crystal display and an organic electroluminescence display (organic EL display). The input / output unit 23 may be an audio device such as a speaker and a buzzer. In addition, the input / output unit 23 may be a lighting device such as a light-emitting diode (LED) lamp. The input / output unit 23 functions as an input / output device (input device, output device, operation device, or notification device) of the terminal device 20.

[0231] The control unit 24 is a controller that controls each unit of the terminal device 20. For example, the control unit 24 is implemented by a processor such as a central processing unit (CPU) or a microprocessor unit (MPU). For example, when the processor executes various programs stored in the storage device inside the terminal device 20 by using a RAM or the like as a work area, the control unit 24 is implemented. Incidentally, the control unit 24 may be implemented by an integrated circuit such as an application specific integrated circuit (ASIC) and a field programmable gate array (FPGA). Any one of the CPU, MPU, ASIC, and FPGA may be regarded as a controller. Incidentally, the control unit 34 may have each functional block of the control unit of the base station device 30.

[0232] As Figure 7 shown in the illustration in the figure, the control unit 24 includes a selection unit 241, a calculation unit 242, a determination unit 243, a setting unit 244, and a wireless communication control unit 246. Each block (selection unit 241 to setting unit 244 and wireless communication control unit 246) constituting the control unit 24 is a functional block indicating the function of the control unit 24. These functional blocks may be software blocks or may be hardware blocks. For example, each of the above functional blocks may be a software module implemented by software (including microprogram) or a circuit block on a semiconductor chip (die). Of course, each functional block may be a processor or an integrated circuit. The method of constituting the functional blocks is arbitrary. Incidentally, the control unit 24 may be constituted by functional units different from the above functional blocks.

[0233] The operations of the selection unit 241, calculation unit 242, and determination unit 243 that constitute the control unit 24 may be the same as the operations of the respective blocks of the selection unit 441, calculation unit 442, and determination unit 443 that constitute the control unit 44 of the communication control device 40. In this case, the description of "terminal device 20" that appears in the following description may be appropriately replaced with "communication control device 40". Similarly, the descriptions of "control unit 24", "selection unit 241", "calculation unit 242", and "determination unit 243" that appear in the following description may be appropriately replaced with "control unit 44", "selection unit 441", "calculation unit 442", and "determination unit 443". In addition, the control unit 24 does not necessarily have to include all of the selection unit 241, calculation unit 242, and determination unit 243. The control unit 24 includes some or all of the blocks of the selection unit 241, calculation unit 242, and determination unit 243 distributed between the control unit 34 of the base station device 30 and the control unit 44 of the communication control device 40.

[0234] The operations of the setting unit 244 and the wireless communication control unit 246 that constitute the control unit 24 may be the same as the operations of the respective blocks of the setting unit 344 and the wireless communication control unit 346 that constitute the control unit 34 of the base station device 30. In this case, the description of "terminal device 20" that appears in the following description may be appropriately replaced with "base station device 30". Similarly, the descriptions of "control unit 24", "setting unit 244", and "wireless communication control unit 246" that appear in the following description may be appropriately replaced with "control unit 34", "setting unit 344", and "wireless communication control unit 346".

[0235] The operations of the respective blocks that constitute the control unit 24 will be described later.

[0236] <2-3. Configuration of Base Station Device>

[0237] Next, the configuration of the base station device 30 will be described. Figure 8 is a diagram illustrating an example of the configuration of the base station device 30 according to an embodiment of the present disclosure. The base station device 30 is a communication device (wireless system) that wirelessly communicates with the terminal device 20 under the control of the communication control device 40. The base station device 30 is an information processing device.

[0238] The base station device 30 includes a wireless communication unit 31, a storage unit 32, a network communication unit 33, and a control unit 34. Incidentally, Figure 8 the configuration shown in the diagram is a functional configuration, and the hardware configuration may be different. In addition, the functions of the base station device 30 can be distributed and implemented in multiple physically separated devices.

[0239] The wireless communication unit 31 is a wireless communication interface that wirelessly communicates with other communication devices (e.g., the terminal device 20, the communication control device 40, the proxy device 50, and other base station devices 30). The wireless communication unit 31 operates under the control of the control unit 34. The wireless communication unit 31 can support multiple wireless access methods. For example, the wireless communication unit 31 can support both NR and LTE. The wireless communication unit 31 can support other cellular communication methods, such as W-CDMA and cdma2000. In addition, in addition to cellular communication methods, the wireless communication unit 31 can also support a wireless LAN communication method. Of course, the wireless communication unit 31 can support only one wireless access method.

[0240] 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 can include multiple reception processing units 311, multiple transmission processing units 312, and multiple antennas 313. Incidentally, in the case where the wireless communication unit 31 supports multiple wireless access methods, each unit of the wireless communication unit 31 can be configured separately for each wireless access method. For example, when the base station device 30 supports NR and LTE, the reception processing unit 311 and the transmission processing unit 312 can be configured separately for NR and LTE.

[0241] The reception processing unit 311 processes the uplink signal received via the antenna 313. The reception processing unit 311 includes a wireless reception unit 311a, a demultiplexing unit 311b, a demodulation unit 311c, and a decoding unit 311d.

[0242] For the uplink signal, the wireless reception unit 311a performs downconversion, removal of unnecessary frequency components, control of the amplification level, quadrature demodulation, conversion into a digital signal, removal of the guard interval, extraction of the frequency-domain signal using the fast Fourier transform, etc. For example, assume that the wireless access method of the base station device 30 is a cellular communication method such as LTE. At this time, the demultiplexing unit 311b separates uplink channels such as the physical uplink shared channel (PUSCH) and the physical uplink control channel (PUCCH) and uplink reference signals from the signal output from the wireless reception unit 311a. The demodulation unit 311c demodulates the received signal for the modulation symbols of the uplink channel by using modulation methods such as binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK). The modulation method used by the demodulation unit 311c can be 16 quadrature amplitude modulation (QAM), 64QAM, or 256QAM. The decoding unit 311d performs decoding processing on the encoded bits of the demodulated uplink channel. The decoded uplink data and uplink control information are output to the control unit 34.

[0243] The transmission processing unit 312 performs transmission processing of downlink control information and downlink data. The transmission processing unit 312 includes an encoding unit 312a, a modulation unit 312b, a multiplexing unit 312c, and a wireless transmission unit 312d.

[0244] The encoding unit 312a encodes the downlink control information and downlink data input from the control unit 34 by using encoding methods such as block coding, convolutional coding, and turbo coding. The modulation unit 312b modulates the encoded bits output from the encoding unit 312a by using predetermined modulation methods such as BPSK, QPSK, 16QAM, 64QAM, and 256QAM. The multiplexing unit 312c multiplexes the modulation symbols of each channel and the downlink reference signal, and arranges the result in a predetermined resource element. The wireless transmission unit 312d performs various signal processes on the signal from the multiplexing unit 312c. For example, the wireless transmission unit 312d performs processes such as conversion to the time domain by fast Fourier transform, addition of a guard interval, generation of a baseband digital signal, conversion to an analog signal, quadrature modulation, up-conversion, removal of redundant frequency components, and power amplification. The signal generated by the transmission processing unit 312 is transmitted from the antenna 313.

[0245] The storage unit 32 is a storage device that can read and write data, such as DRAM, SRAM, flash memory, and a hard disk. The storage unit 32 functions as a storage device of the base station device 30. The storage unit 32 stores desired transmission power information, operation parameters, owned resource information, and the like.

[0246] The desired transmission power information is information about the transmission power requested by the base station device 30 from the communication control device 40, as information about the transmission power required for transmitting radio waves.

[0247] The operation parameters are information about the radio wave transmission operation of the base station device 30 (e.g., setting information). For example, the operation parameters are information about the maximum value of the transmission power allowed in the base station device 30 (maximum allowable transmission power). Of course, the operation parameters are not limited to the information about the maximum allowable transmission power.

[0248] The owned resource information is information about the owned wireless resources of the base station device 30. For example, the owned resource information is information about the wireless resources currently available to the base station device 30. For example, the owned resource information is information about the amount of interference margin allocated to the base station device 30 from the communication control device 40. The information about the amount can be information about each resource block described later. That is, the owned resource information can be information about the resource blocks owned by the base station device 30 (e.g., resource block holdings).

[0249] The network communication unit 33 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 30). For example, the network communication unit 43 is a local area network (LAN) interface such as a network interface card (NIC). The network communication unit 33 can be a USB interface composed of a universal serial bus (USB) host controller, a USB port, etc. In addition, the network communication unit 33 can be a wired interface or a wireless interface. The network communication unit 33 functions as the network communication device of the base station device 30. The network communication unit 33 communicates with other devices under the control of the control unit 34.

[0250] The control unit 34 is a controller that controls each unit of the base station device 30. The control unit 34 is implemented by a processor such as a CPU and an MPU, for example. For example, when the processor executes various programs stored in the storage device inside the base station device 30 using the RAM, etc. as a work area, the control unit 34 is implemented. Incidentally, the control unit 34 can be implemented by an integrated circuit such as an ASIC or an FPGA. Any one of the CPU, MPU, ASIC, and FPGA can be regarded as a controller.

[0251] As Figure 8 As shown in the illustration in the middle figure, the control unit 34 includes a selection unit 341, a calculation unit 342, a determination unit 343, a setting unit 344, a notification unit 345, and a wireless communication control unit 346. Each block (selection unit 341 to wireless communication control unit 346) constituting the control unit 34 is a functional block indicating the functions of the control unit 34. 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 microprogram) or a circuit block on a semiconductor chip (die). Of course, each functional block can be a processor or an integrated circuit. The method of constituting the functional blocks is arbitrary. Incidentally, the control unit 34 can be constituted by functional units different from the above functional blocks.

[0252] The operations of the selection unit 341, calculation unit 342, determination unit 343, and notification unit 345 that constitute the control unit 34 can be the same as the operations of the respective blocks of the selection unit 441, calculation unit 442, determination unit 443, and notification unit 445 that constitute the control unit 44 of the communication control device 40. In this case, the description of "base station device 30" appearing in the following description can be replaced with "communication control device 40". Similarly, the descriptions of "control unit 34", "selection unit 341", "calculation unit 342", "determination unit 343", and "notification unit 345" appearing in the following description can be appropriately replaced with "control unit 44", "selection unit 441", "calculation unit 442", "determination unit 443", and "notification unit 445". In addition, the control unit 34 does not necessarily have to include all of the selection unit 341, calculation unit 342, and determination unit 343. The control unit 34 includes some or all of the blocks of the selection unit 341, calculation unit 342, and determination unit 343 distributed between the control unit 24 of the terminal device 20 and the control unit 44 of the communication control device 40.

[0253] The operations of the respective blocks that constitute the control unit 34 will be described later.

[0254] <2-4. Configuration of Communication Control Device>

[0255] The communication control device 40 is a device that controls the wireless communication of the base station device 30. The communication control device 40 can control the wireless communication of the terminal device 20 via the base station device 30 or directly. The communication control device 40 is an information processing device.

[0256] Fig. 9 is a diagram illustrating an example of the configuration 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. Incidentally, Fig. 9 the configuration illustrated in the figure is a functional configuration, and the hardware configuration may be different. In addition, the functions of the communication control device 40 can be distributed and implemented in a plurality of physically separated configurations. For example, the communication control device 40 can be constituted by a plurality of server devices.

[0257] The wireless communication unit 41 is a wireless communication interface that wirelessly communicates with other communication devices (e.g., the terminal device 20, the base station 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 41 supports one or more wireless access methods. For example, the wireless communication unit 41 supports both NR and LTE. The wireless communication unit 41 may support other wireless access methods such as W-CDMA and cdma2000. The configuration of the wireless communication unit 41 is similar to that of the wireless communication unit 31 of the base station device 30.

[0258] The storage unit 42 is a storage device that can read and write data, such as DRAM, SRAM, flash memory, and hard disks. The storage unit 42 serves as the storage device of the communication control device 40. The storage unit 32 stores the operation parameters of each of the multiple base station devices 30 that make up the communication system 2. Incidentally, the storage unit 42 may store the resource information owned by each of the multiple base station devices 30 that make up the communication system 2. As described above, the owned resource information is information about the wireless resources owned by the base station device 30.

[0259] The network communication unit 43 is a communication interface for communicating with other devices (e.g., the base station device 30, 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 33 may be a LAN interface such as a NIC. In addition, the network communication unit 63 may be a USB interface composed of a USB host controller, a USB port, etc. In addition, the network communication unit 43 may be a wired interface or a wireless interface. The network communication unit 43 serves as the communication device of the communication control device 40. The network communication unit 43 communicates with the terminal device 20, the base station device 30, and the proxy device 50 under the control of the control unit 44.

[0260] The control unit 44 is a controller that controls each unit of the communication control device 40. The control unit 44 is implemented by a processor such as a CPU and an MPU, for example. For example, when the processor executes various programs stored in the storage device inside the communication control device 40 by using a RAM, etc. as a work area, the control unit 44 is implemented. Incidentally, the control unit 44 may be implemented by an integrated circuit such as an ASIC or an FPGA. Any one of the CPU, MPU, ASIC, and FPGA can be regarded as a controller.

[0261] As Fig. 9As shown in the figure, the control unit 44 includes a selection unit 441, a calculation unit 442, a determination unit 443, and a notification unit 445. Each of the selection unit 441, the calculation unit 442, the determination unit 443, and the notification unit 445 that make up the control unit 44 is a functional block indicating 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 microprogram) or a circuit block on a semiconductor chip (die). Of course, each functional block can be a processor or an integrated circuit. The method of constituting the functional blocks is arbitrary. Incidentally, the control unit 44 can be constituted by functional units different from the above functional blocks.

[0262] The operations of the respective blocks that make up the control unit 44 will be described later.

[0263] <2-5. Configuration of the proxy device>

[0264] Next, the configuration of the proxy device 50 will be described. Fig.10 It is a diagram illustrating an example of the configuration of the proxy device 50 according to an embodiment of the present disclosure. The proxy device 50 is a communication device that communicates with the base station device 30 and the communication control device 40. The proxy device 50 is an information processing device.

[0265] The proxy device 50 includes a wireless communication unit 51, a storage unit 52, a network communication unit 53, and a control unit 54. Incidentally, Fig.10 The configuration shown in the figure is a functional configuration, and the hardware configuration may be different therefrom. In addition, the functions of the proxy device 50 can be distributed and implemented in a plurality of physically separated configurations.

[0266] The wireless communication unit 51 is a wireless communication interface that wirelessly communicates with other communication devices (for example, the terminal device 20, the base station device 30, the communication control device 40, and other proxy 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 wireless access methods. For example, the wireless communication unit 51 supports both NR and LTE. The wireless communication unit 51 can support other wireless access methods such as W-CDMA and cdma2000. The configuration of the wireless communication unit 51 is similar to the configuration of the wireless communication unit 31 of the base station device 30.

[0267] The storage unit 52 is a storage device that can read and write data, such as DRAM, SRAM, flash memory, and hard disk. The storage unit 52 serves as the storage device of the proxy device 50. The storage unit 52 stores the desired transmission power information, operation parameters, resource information owned, etc. of each subordinate base station device 30.

[0268] The network communication unit 53 is a communication interface for communicating with other devices (e.g., the base station device 30, the communication control device 40, and other proxy devices 50). For example, the network communication unit 53 is a LAN interface such as a NIC. The network communication unit 53 may be a USB interface composed of a USB host controller, a USB port, etc. In addition, the network communication unit 53 may be a wired interface or a wireless interface. The network communication unit 53 functions as the network communication device of the proxy device 50. The network communication unit 53 communicates with other devices under the control of the control unit 54.

[0269] The control unit 54 is a controller that controls each unit of the proxy device 50. The control unit 54 is implemented by a processor such as a CPU and an MPU, for example. For example, when the processor executes various programs stored in the storage device inside the proxy device 50 using a RAM or the like as a work area, the control unit 54 is implemented. Incidentally, the control unit 54 may be implemented by an integrated circuit such as an ASIC or an FPGA. Any one of the CPU, MPU, ASIC, and FPGA can be regarded as a controller.

[0270] As Fig.10 As shown in the diagram in the middle figure, the control unit 54 includes a selection unit 541, a calculation unit 542, a determination unit 543, and a notification unit 545. Each block (selection unit 541 to notification unit 545) constituting the control unit 54 is a functional block indicating the function of the control unit 54. These functional blocks may be software blocks or may be hardware blocks. For example, each of the above functional blocks may be a software module implemented by software (including microprogram) or a circuit block on a semiconductor chip (die). Of course, each functional block may be a processor or an integrated circuit. The method of constituting the functional blocks is arbitrary. Incidentally, the control unit 54 may be constituted by functional units different from the above functional blocks.

[0271] The operations of each block of the selection unit 541, the calculation unit 542, the determination unit 543, and the notification unit 545 constituting the control unit 54 may be the same as the operations of each block of the selection unit 441, the calculation unit 442, the determination unit 443, and the notification unit 445 constituting the control unit 44 of the communication control device 40. In this case, the description of "proxy device 50" appearing in the following description may be appropriately replaced with "communication control device 40". Similarly, the descriptions of "control unit 54", "selection unit 541", "calculation unit 542", "determination unit 543", and "notification unit 545" appearing in the following description may be appropriately replaced with "control unit 44", "selection unit 441", "calculation unit 442", "determination unit 443", and "notification unit 445".

[0272] The operations of the respective blocks constituting the control unit 54 will be described later.

[0273] 《3. Interference Model》

[0274] Next, the interference model assumed in this embodiment will be described. Fig.11 is an explanatory diagram illustrating an example of the interference model assumed in an embodiment of the present disclosure. Incidentally, the description of the base station device 30 appearing in the following description can be replaced with words indicating other communication devices having a wireless communication function.

[0275] Fig.11 The interference model illustrated in the figure is applied, for example, to the case where the primary system has a service area. In Fig.11 the example, the communication system 1 (primary system) is a wireless communication system having a service area. This service area is, for example, the protection area of the communication system 1. A plurality of interference calculation reference points (hereinafter referred to as protection points) are set in the protection area. The protection points are set, for example, by an operator of the communication system 1, a public institution that manages radio waves, etc. (hereinafter referred to as the manager). For example, the manager can divide the protection area into a grid pattern and use the center of a predetermined grid as the protection point. The method of determining the protection points is arbitrary. The interference margin for each protection point is set by the manager or the like. Fig.11 illustrates the interference imposed on the protection points by the plurality of base station devices 30 constituting the communication system 2 (secondary system). The communication control device 40 of the communication system 2 controls the transmission power of the plurality of base station devices 30 so that the cumulative interference at each protection point does not exceed the set interference margin.

[0276] Fig.12 is an explanatory diagram illustrating another example of the interference model assumed in an embodiment of the present disclosure. For example, when the primary system only performs reception, the interference model illustrated in Fig.12 the figure is applied. In Fig.12 the example, the communication system 1 (primary system) has a ground-fixed communication device 10C1 as the communication device 10. The ground-fixed communication terminal 10C1 is, for example, the receiving antenna of a satellite ground station. The communication control device 40 of the communication system 2 uses the position of this receiving antenna as the protection point and controls the transmission power of the plurality of base station devices 30 so that the cumulative interference at this point does not exceed the interference margin.

[0277] 《4. Primary System Protection Method》

[0278] Next, the primary system protection method will be described. As described above, the primary system protection method can be divided into the following two types, for example.

[0279] (1) Interference Margin Batch Allocation Type

[0280] (2) Interference margin successive allocation type

[0281] Incidentally, examples of the primary system protection method of the interference margin batch allocation type include, for example, the method disclosed in Non-Patent Document 3 (e.g., the method for calculating the maximum allowable EIRP). In addition, examples of the primary system protection method of the interference margin successive allocation type include, for example, the successive allocation process (IAP: Successive Allocation Process) disclosed in Non-Patent Document 6.

[0282] Hereinafter, the "interference margin batch allocation type" primary system protection method and the "interference margin successive allocation type" primary system protection method will be described. Incidentally, the description of the base station device 30 appearing in the following description can be replaced with words indicating other communication devices having a wireless communication function.

[0283] <4-1. Interference margin batch allocation type>

[0284] First, the primary system protection method of the interference margin batch allocation type will be described. Fig.13 This is an explanatory diagram for explaining the primary system protection method of the interference margin batch allocation type. As described above, in the interference margin batch allocation type, 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. In Fig.13 the example, the allowable interference threshold of the primary system is I accept . This threshold can be an actual threshold, or can be a value set by considering a certain margin (e.g., protection ratio) from the actual threshold in consideration of calculation errors and interference fluctuations.

[0285] In the primary system protection method of the interference margin batch allocation type, interference control means determining the transmission power (EIRP, conducted power + antenna gain, etc.) of the wireless device so as not to exceed the allowable interference threshold. At this time, when there are multiple base station devices 30 and each base station device 30 does not exceed the allowable interference threshold, the interference power received in the communication system 1 (primary system) may exceed the allowable interference threshold. In this regard, based on the number of base station devices 30 registered in the communication control device 40, the interference margin (allowable interference amount) is "allocated".

[0286] For example, in Fig.13 the example, the total number of base station devices 30 is 5. Then, the I acceptThe allowable interference amount of 1 / 5. Since the base station device 30 itself cannot recognize this allocated amount, the base station device 30 recognizes this allocated amount through the communication control device, or obtains the transmission power determined based on this allocated amount. Since the communication control device cannot recognize the number of radio devices managed by other communication control devices, the total number can be recognized and the allowable interference amount can be allocated by mutually exchanging information. For example, in the communication control device 401, 3I is allocated accept The allowable interference amount of 1 / 5.

[0287] Incidentally, in this method, the interference margin unused by the base station device 30 can be the remaining interference margin. Fig.14 is a diagram illustrating a case where the remaining interference margin is generated. Fig.14 Illustrates the total interference amount set for each of the two communication control devices 40 (communication control devices 401 and 402). In addition, Fig.14 Illustrates the interference amount (applied interference amount) applied by a plurality of base station devices 30 (base station devices 301 to 305) controlled by the two communication control devices 40 to a predetermined protection point of the communication system 1. The interference amount obtained by subtracting the interference amount of the base station device 30 from the total interference amount of each of the two communication control devices 40 is the remaining interference margin. In the following description, the excess interference amount is referred to as the remaining interference margin. The remaining interference margin can be referred to as the remaining interference amount.

[0288] <4-2. Successive Allocation Type of Interference Margin>

[0289] Next, the primary system protection method of the successive allocation type of interference margin will be described. As described above, in the successive allocation type of interference margin, 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. Fig.15 is an explanatory diagram for explaining the primary system protection method of the successive allocation type of interference margin. In the successive allocation type of interference margin, for example, each of the plurality of base station devices 30 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 30 from the communication control device 40 as information about the transmission power required for transmitting radio waves. In Fig.15 this example, the base station devices 301 to 304 respectively hold the desired transmission power information A to D. The communication control device 40 respectively allocates the interference amounts A to D to the base station devices 301 to 304 based on the desired transmission power information A to D.

[0290] 《5. Explanation of Each Process》

[0291] Next, each process that occurs between the entities of the communication system 2 will be described. Incidentally, the description of the base station device 30 that appears in the following description can be replaced with words indicating other communication devices having a wireless communication function.

[0292] <5-1. Registration process>

[0293] The registration process is a process for registering device parameters related to the base station device 30 in the communication control device 40. Generally, the base station device 30 or one or more communication systems including a plurality of base station devices 30 notify the communication control device 40 of a registration request including device parameters, thereby starting the registration process. The registration request can be sent by a communication system (for example, a proxy system such as the proxy device 50) that represents (acts on behalf of) one or more base station devices 30.

[0294] In the following description, it is assumed that the communication system representing (acting on behalf of) a plurality of base station devices 30 is the proxy device 50. However, the words of the proxy device 50 that appear in the following description can be replaced with words indicating a communication system that represents (acts on behalf of) other communication devices, such as a proxy system.

[0295] (Details of required parameters)

[0296] The device parameters refer to, for example, the following information.

[0297] Information specific to the communication device

[0298] Location information

[0299] Antenna information

[0300] Wireless interface information

[0301] Legal information

[0302] Installer information

[0303] In implementation, information other than these can be regarded as device parameters.

[0304] The information specific to the communication device includes information that can identify the base station device 30, information about the hardware of the base station device 30, etc. For example, it can include a serial number, a product model, etc.

[0305] The information that can identify the base station device 30 refers to communication device user information, communication device serial numbers, etc. For example, a user ID, a call signal, etc. can be considered as communication device user information. The user ID can be generated independently by the communication device user, or can be issued in advance by the communication control device 40.

[0306] Information about the hardware of the base station device 30 may include, for example, transmission power level information, manufacturer information, etc. In the transmission power level information, for example, two levels, Class A and Class B, are defined in FCC C.F.R Part 96, and any information may be included. In addition, some levels of eNodeB and gNodeB are defined in 3GPP TS 36.104 and TS 38.104, and these levels may also be used.

[0307] Information about the software of the base station device 30 may include, for example, version information and build numbers of the execution programs that describe the processes required for interacting with the communication control device 40. In addition, version information and build numbers of the software that functions as the base station device 30 may also be included.

[0308] Information about the location is generally information that can identify the geographical location of the base station device 30. For example, this information is coordinate information obtained through positioning functions represented by the Global Positioning System (GPS), Beidou, Quasi-Zenith Satellite System (QZSS), Galileo, and Assisted Global Positioning System (A-GPS). Generally, information about latitude, longitude, altitude, and positioning error may be included. Or, for example, this information may be location information registered in an information management device managed by a national regulatory agency (NRA) or its entrusted agency. Or, for example, this information may be the coordinates of the X-axis, Y-axis, and Z-axis with a specific geographical location as the origin. In addition, an identifier indicating outdoor / indoor may be given together with such coordinate information.

[0309] Information about the location may be information indicating the area where the base station device 30 is located. For example, information determined by the government such as postal codes and addresses may be used. In addition, for example, the area may be indicated by a set of three or more geographical coordinates. Such information indicating the area may be provided together with the above coordinate information.

[0310] In the information about the location, when the base station device 30 is located indoors, information indicating the floor of the building may be added. For example, the number of floors, an identifier indicating above / below ground, etc. may be added. In addition, for example, information indicating a further enclosed space indoors, such as room numbers and room names within the building, may be added.

[0311] Preferably, the positioning function is generally provided by the base station device 30. However, depending on the performance of the positioning function and the installation location, it is not always possible to obtain location information that meets the required accuracy. Thus, the positioning function may be used by the installer. In this case, it is preferable to write the location information measured by the installer into the base station device 30.

[0312] Antenna information generally refers to information indicating the performance, composition, etc. of the antennas included in the base station device 30. Generally, for example, it may include information such as antenna installation height, tilt angle (Downtilt), horizontal azimuth angle, line of sight, antenna peak gain, and antenna model.

[0313] Antenna information may also include information about the beams that can be formed. For example, it may include information such as beam width, beam pattern, and analog / digital beamforming capabilities.

[0314] Antenna information may include information about the performance and composition of multiple-input multiple-output (MIMO) communication. For example, it may include information such as the number of antenna elements and the maximum number of spatial streams. In addition, it may also include codebook information to be used, weight matrix information (unitary matrix, zero-forcing (ZF) matrix, minimum mean square error matrix obtained through singular value decomposition (SVD), eigenvalue decomposition (EVD), block diagonalization (BD), etc.). In addition, in the case of providing maximum likelihood detection (MLD) etc. that requires non-linear calculations, information indicating this may be included.

[0315] Antenna information may include the vertical transmit direction (ZoD). ZoD is an angle of arrival of radio waves. ZoD can be estimated by other base station devices 30 based on the radio waves transmitted from the antennas of the base station device 30. In this case, the base station device 30 can be a terminal device acting as a base station or an access point, a device for D2D communication, a mobile relay base station, etc. ZoD can be estimated by radio wave arrival direction estimation techniques such as multiple signal classification (MUSIC) or estimation of signal parameters via rotational invariance techniques (ESPRIT). ZoD can be used by the communication control device 40 as measurement information.

[0316] Radio interface information generally refers to information indicating the radio interface technology included in the base station device 30. For example, it includes identifier information indicating the technologies used in GSM (registered trademark), CDMA2000, UMTS, E-UTRA, 5G new radio (5G NR), or the next-generation cellular system, LTE-based derivative technologies such as MulteFire and LTE-Unlicensed (LTE-U), metropolitan area networks (MAN) such as WiMAX and WiMAX2+, and standard technologies such as IEEE 802.11 wireless LAN. The version number or release number of the technical specifications defining these technologies can also be added. It does not necessarily have to be a standard technology and may include information indicating a proprietary radio technology.

[0317] The radio interface information may also include information about the frequency bands supported by the base station device 30. For example, it may be represented by one or more combinations of an upper limit frequency and a lower limit frequency, one or more combinations of a center frequency and a bandwidth, or one or more 3GPP operating band numbers, etc.

[0318] The information about the frequency bands supported by the base station device 30 may also include information about the capabilities of carrier aggregation (CA) and channel binding. For example, it may include information about the frequency bands that can be combined. In addition, carrier aggregation may include information about the bandwidths desired to be used as the primary component carrier (PCC) or secondary component carriers (SCC). In addition, the number of CCs that can be aggregated simultaneously may also be included.

[0319] As the information about the frequency bands supported by the base station device 30, it may include information indicating the priorities of radio wave usage such as PAL and GAA.

[0320] The radio interface information may also include information about the modulation methods supported by the base station device 30. For example, as typical examples, it may include information indicating primary modulation methods such as frequency shift keying (FSK), n-value phase shift keying (PSK) (n is 2, 4, 8, etc.), and n-value quadrature amplitude modulation (QAM) (n is 4, 16, 64, 256, etc.), and information indicating secondary modulation methods such as orthogonal frequency division multiplexing (OFDM), DFT-spread OFDM (DFT-s-OFDM), and filter bank multicarrier (FBMC).

[0321] The radio interface information may also include information about error correction codes. For example, it may include capabilities such as Turbo codes, low-density parity-check (LDPC) codes, and polar codes, or the code rate information to be applied.

[0322] As another aspect, the information about the modulation method or the information about the error correction code may also be represented by a modulation and coding scheme (MCS) index.

[0323] The radio interface information may include information indicating the functions specific to each radio technology supported by the base station device 30. For example, typical examples include the transmission mode (TM) information defined by LTE. In addition to this, like the above-mentioned TM, those having two or more modes for a specific function may be included in the radio interface information. In addition, in the technical specifications, even if there are not two or more modes, in the case where the base station device 30 supports a function that is not necessary according to the specifications, information indicating that function may be included.

[0324] The radio interface information may also include information on the radio access methods (RAT: Radio Access Technology) supported by the base station device 30. For example, it may include information indicating orthogonal multiple access (OMA) such as time division multiple access (TDMA), frequency division multiple access (FDMA), and orthogonal frequency division multiple access (OFDMA), non-orthogonal multiple access (NOMA) such as power division multiple access (PDMA, a typical example is a method implemented through a combination of superposition coding (SPC) and successive interference cancellation (SIC)), code division multiple access (CDMA), sparse code multiple access (SCMA), interleaved division multiple access (IDMA), space division multiple access (SDMA), and opportunistic access such as carrier sense multiple access with collision avoidance (CSMA / CA) and carrier sense multiple access with collision detection (CSMA / CD).

[0325] The radio interface information may also include information on the duplex mode supported by the base station device 30. For example, as a typical example, it may include frequency division duplex (FDD), time division duplex (TDD), or full duplex (FD). In the case where TDD is included as the radio interface information, information on the TDD frame structure used / supported by the base station device 30 may be added. In addition, for each frequency band indicated by the above frequency band information, information on the duplex mode may be included.

[0326] The radio interface information may also include information on the transmit diversity method supported by the base station device 30. For example, it may include space-time coding (STC).

[0327] The radio interface information may also include guard band information. For example, it may include information on the guard band size determined by the standard. Or, for example, it may include information on the guard band size desired by the base station device 30.

[0328] Generally, the legal information is information on the regulations that the base station device 30 must comply with established by the radio wave management agencies or equivalent institutions in each country / region, the certification information obtained by the base station device 30, etc. Generally, the information on the above regulations may include, for example, information on the upper limit value of out-of-band emissions and information on the blocking characteristics of the receiver. Generally, the above certification information may include type approval information (FCC ID, technical standard compliance certificate, etc.), and regulatory information as the basis for obtaining certification (such as FCC rule numbers and ETSI harmonization standard numbers).

[0329] The information on numerical values in the legal information can be replaced with the information specified in the radio interface technology standard. For example, instead of the information on the upper limit value of out-of-band emission, by using the adjacent channel leakage ratio (ACLR), the upper limit value of out-of-band emission can be obtained and used. In addition, the ACLR itself can be used when necessary. In addition, instead of the blocking characteristic, the adjacent channel selectivity (ACS) can be used. In addition, these can be used together, or the adjacent channel interference ratio (ACIR) can be used.

[0330] The installer information may include information that can identify the person (installer) who installs the base station device 30, specific information associated with the installer, and the like. For example, as the information that can identify the installer, Non-Patent Document 2 discloses the Certified Professional Installer Registration ID (CPIR-ID) and the CPI name. In addition, as the specific information associated with the installer, for example, the contact address (mailing / contact address), e-mail address, telephone number, public key identifier (PKI), etc. are disclosed. The present invention is not limited thereto, and other information about the installer can be included when necessary.

[0331] [Supplement of Required Parameters]

[0332] During the registration process, depending on the embodiment, it is envisaged that in the communication control device 40, not only the device parameters of the base station device 30 but also the device parameters of the terminal device 20 are required to be registered. In this case, in the above description (details of the required parameters), the term "communication device" can be replaced with the term "terminal device" or an equivalent term for application. In addition, parameters specific to the "terminal device" that are not described in the above (details of the required parameters) can also be regarded as required parameters during the registration process. For example, it may include the user equipment (UE) category defined by 3GPP, etc.

[0333] [Details of Registration Process]

[0334] Fig.16 is a sequence diagram for explaining the registration process. The base station device 30 or one or more communication systems including a plurality of base station devices 30 generate a registration request message (step S11) by using the above device parameters and notify the communication control device 40 (step S12). The proxy device 50 can generate and / or notify the message.

[0335] Here, when the device parameters include the installer information, by using this information, processing such as tamper prevention processing of the registration request can be performed. In addition, part or all of the information included in the registration request can be encrypted. Specifically, for example, a process can be performed in which the installer-specific public key is shared in advance between the installer and the communication control device 40, and the installer encrypts the information using the private key. Examples of the encryption object include security-sensitive information such as location information.

[0336] Regarding location information, as disclosed in Non-Patent Document 2, for example, the installer can directly write the location information into the communication control device 40.

[0337] After receiving the registration request, the communication control device 40 performs the registration process of the base station device 30 (step S13), and returns a registration response according to the processing result (step S14). When 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 normal completion. Otherwise, the communication control device 40 notifies registration failure. In the case of normal registration completion, the communication control device 40 can allocate IDs to the respective communication devices and notify the ID information in the attached state at the time of response. In the case of registration failure, generally, the base station device 30, one or more communication systems including a plurality of base station devices 30, or its operator (such as a mobile network operator and an individual) or installer corrects the registration request, etc., and attempts the registration process until normal completion.

[0338] Incidentally, the registration process can be executed multiple times. Specifically, for example, in the case where the change in location information exceeds a predetermined standard due to movement / improvement in accuracy, the registration process can be executed again. The predetermined standard is generally set by a legal system. For example, in 47 C.F.R Part 15, in the case where the location information changes by 100 meters or more, Mode II personal / portable white space devices must access the database again.

[0339] <5-2. Available Spectrum Inquiry Process>

[0340] The available spectrum inquiry process is a process in which the base station device 30 or the proxy device 50 queries the communication control device 40 about information on available frequencies. Generally, the base station device 30 or the proxy device 50 starts this process by notifying the communication control device 40 of an inquiry request, which includes information capable of identifying the relevant base station device 30 (or the base station device 30 subordinate to the relevant proxy device 50).

[0341] (1) Example 1

[0342] Here, the available frequency information is generally information indicating frequencies that can be safely used for secondary use without causing fatal interference to the primary system at the location of the relevant base station device 30 (or the base station device 30 subordinate to the relevant proxy device 50). For example, in the case where the base station device 30 is installed in a secondary use prohibited area such as an exclusion zone to protect the primary system using a frequency channel called F1, for the base station device 30, the frequency channel called F1 will not be notified as an available channel.

[0343] (2) Example 2

[0344] For example, even outside the secondary use prohibited area, in the case where a fatal interference is determined to be imposed on the primary system, the relevant frequency channel may not be notified as an available channel.

[0345] (3) Example 3

[0346] In the available frequency information, there may be frequency channels that are not notified as available even under conditions other than the primary system protection requirements of Example 2. Specifically, for example, in order to avoid possible interference between base station devices 30 in advance, other base station devices 30 located near the relevant base station device 30 (or base station devices 30 under the relevant proxy device 50) may not notify the frequency channels in use as available channels.

[0347] (4) Example 4

[0348] Even in these cases (Example 2 and 3), the same frequency as that of the primary system or the nearby base station device 30 may be notified as an available channel. In such a case, the maximum allowable transmission power information is generally included in the available frequency information. The maximum allowable transmission power is generally expressed as the equivalent isotropically radiated power (EIRP). The maximum allowable transmission power is not necessarily limited to this. For example, it can be provided as a combination of the antenna power (conducted power) and the antenna gain. Feeder loss can also be included. In addition, in the antenna gain, the allowable peak gain can be set for each spatial direction.

[0349] [Details of required parameters]

[0350] As information for identifying the base station device 30, for example, information specific to the communication device registered during the registration process, ID information described in the above (Details of the registration process), etc. can be envisaged.

[0351] The inquiry request may also include inquiry requirement information. The inquiry requirement information can include, for example, information indicating the frequency band for which it is desired to know whether it is available. Additionally, for example, it can include transmission power information. For example, in the case where it is desired to know only the information related to the frequencies that can use the desired transmission power, the base station device 30 or the proxy device 50 can include the transmission power information. It is not necessary to include the inquiry requirement information.

[0352] The inquiry request may also include a measurement report. The measurement report includes the results of measurements performed by the base station device 30 and / or the terminal device 20. For example, the measurement report can include the processed information, as well as the raw data. For example, standardized metrics represented by the reference signal received power (RSRP), reference signal strength indication (RSSI), and reference signal received quality (RSRQ) can be used.

[0353] [Details of the available frequency evaluation process]

[0354] Fig.17 It is a sequence diagram for explaining the available spectrum inquiry process. The base station device 30 or the proxy device 50 generates an inquiry request (step S21), and the inquiry request includes information capable of identifying the relevant base station device 30 (or the base station device 30 subordinate to the relevant proxy device 50), and notifies the communication control device 40 (step S22).

[0355] After receiving the inquiry request, the communication control device 40 evaluates the available frequencies based on the inquiry requirement information (step S23). For example, as described in Examples 1 to 3 above, the available frequencies can be evaluated in consideration of the primary system, its secondary use prohibited area, and the presence of nearby base station devices 30.

[0356] As described in Example 4 above, the communication control device 40 can derive the maximum allowable transmission power information. Generally, the calculation is performed by using information on the allowable interference power in the primary system or its protection area, information on the calculation reference point of the interference power level applied to the primary system, the registration information of the base station device 30, and the propagation loss estimation model. Specifically, for example, the calculation is performed using the following formula.

[0357] P MaxTx(dBm) =I Th(dBm) +PL(d) (dB) (1)

[0358] Here, P MaxTx(dBm) is the maximum allowable transmission power, I Th(dBm) is the allowable interference power, d is the distance between the reference point and the base station device 30, and PL(d) (dB) is the propagation loss at the distance d. Although the antenna gain in the transmitter / receiver is not explicitly shown in this formula, depending on the maximum allowable transmission power representation method (EIRP, conducted power, etc.) or the received power reference point (antenna input point, antenna output point, etc.), the antenna gain can be included. In addition, a safety margin for compensating for fluctuations caused by fading, etc. can be included. In addition, feeder loss, etc. can be considered when necessary.

[0359] In addition, the above formula is described based on the assumption that a single base station device 30 is the interference source. For example, in the case where the cumulative interference from multiple base station devices 30 must be considered simultaneously, a correction value can be added. Specifically, for example, the correction value can be determined based on the three (fixed / predetermined, flexible, and flexible minimization) interference margin methods disclosed in Non-Patent Document 3.

[0360] Incidentally, although the above formula is expressed using logarithms, in practice, the formula can of course also be used in the state of being converted to the mantissa. In addition, all the parameters of the logarithmic notation described in this embodiment can be appropriately converted to the base for use.

[0361] (1) Method 1

[0362] In addition, as described in the above section (details of required parameters), when the transmission power information is included in the inquiry request information, the available frequency can be evaluated by a method different from the above method. Specifically, for example, when it is assumed to use the desired transmission power indicated by the transmission power information, if the estimated interference amount is less than the allowable interference power in the primary system or its protected area, it is determined that the relevant frequency channel is available and it is notified to the base station device 30 (or the proxy device 50).

[0363] (2) Method 2

[0364] Although examples of calculating the frequency band usage conditions based on the above other system-related information have been described, the present disclosure is not limited to such examples. For example, like a radio environment map (REM) area, when the area / space where the base station device 30 can use the shared frequency band is predetermined, the available frequency information can be derived only based on the above position-related information and the above height-related information. In addition, for example, even when a lookup table for associating the position and height with the available frequency information is prepared, the available frequency information can be derived only based on the position-related information and the height-related information.

[0365] The evaluation of the available frequency does not necessarily need to be performed after receiving the inquiry request. For example, after the above registration process is normally completed, the communication control device 40 can operate independently without an inquiry request. In this case, the communication control device 40 can create a REM or a lookup table illustrated in Method 2, or an information table similar to them.

[0366] In either of the two methods, the radio wave usage priority such as PAL or GAA can be evaluated. For example, when the registered device parameters or the inquiry request includes information about the radio wave usage priority, it can be determined whether the spectrum usage is feasible based on the relevant priority and the result can be notified. In addition, for example, as disclosed in Non-Patent Document 2, when information (referred to as Cluser List in Non-Patent Document 2) about the base station device 30 that a user uses with high priority (e.g., PAL) is registered in the communication control device 40 in advance, the evaluation can be performed based on this information.

[0367] After completing the evaluation of available frequencies, the communication control device 40 notifies the base station device 30 (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 30 can select desired communication parameters.

[0368] <5-3. Spectrum Utilization Grant Process>

[0369] The spectrum utilization grant process is a process in which the base station device 30 obtains a secondary spectrum utilization grant from the communication control device 40. Generally, after the normal completion of the registration process, the base station device 30 or one or more communication systems including a plurality of base station devices 30 start the spectrum utilization grant process by notifying the communication control device 40 of a spectrum utilization grant request, which includes information capable of identifying the relevant base station device 30. This notification can be made by the proxy device 50. Incidentally, "after the normal completion of the registration process" also means that it is not always necessary to perform the available spectrum information inquiry process.

[0370] In the present invention, it is envisaged that at least the following two spectrum utilization grant request methods can be used.

[0371] Designated Method

[0372] Flexible Method

[0373] The designated method is a request method in which the base station device 30 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 an operation based on the desired communication parameters. It is not always necessary to be limited to these parameters, and parameters specific to radio interface technology (modulation method, duplex mode, etc.) can be designated. In addition, information indicating the priority of radio wave use such as PAL and GAA can be included.

[0374] The flexible method is a request method in which the base station device 30 only designates requirements related to communication parameters, and requests the communication control device 40 to designate communication parameters that satisfy the relevant requirements and permit secondary use permission. The requirements related to communication parameters can include bandwidth, desired maximum transmission power, or desired minimum transmission power. It is not always necessary to be limited to these parameters, and parameters specific to radio interface technology (modulation method, duplex mode, etc.) can be designated. Specifically, for example, one or more in the TDD frame configuration can be pre-selected and notified.

[0375] Either of the two methods may include a measurement report. The measurement report includes the results of measurements performed by the terminal device 20 and / or the base station device 30. For example, the measurement report may include processed information, as well as raw data. For example, standardized metrics represented by reference signal received power (RSRP), reference signal strength indication (RSSI), and reference signal received quality (RSRQ) may be used.

[0376] [Details of Spectrum Utilization Grant Processing]

[0377] Fig.18 is a sequence diagram for illustrating the spectrum utilization grant process. The base station device 30 or one or more communication systems including a plurality of base station devices 30 generate a spectrum utilization grant request (step S31), and the spectrum utilization grant request includes information capable of identifying the relevant base station device 30 and notifies the communication control device 40 (step S32). The proxy device 50 may generate and / or notify the request. The spectrum utilization grant request is acquired, for example, by the acquisition unit of the communication control device 40.

[0378] After acquiring the spectrum utilization grant request, the communication control device 40 performs spectrum utilization grant processing based on the spectrum utilization grant request method (step S33). For example, the communication control device 40 may perform spectrum utilization grant processing by using the methods described in Examples 1 to 3 of <5-2. Available Spectrum Inquiry Process>, taking into account the primary system, its secondary use prohibited area, and the presence of nearby base station devices 30.

[0379] In the case of using a flexible method, the communication control device 40 may derive the maximum allowable transmission power information by using the method described in Example 4 of <5-2. Available Spectrum Inquiry Process>. Generally, the communication control device 40 calculates the maximum allowable transmission power by using information on the allowable interference power in the primary system or its protected area, information on the calculation reference point of the interference power level applied to the primary system, the registration information of the base station device 30, and a propagation loss estimation model. For example, the communication control device 40 calculates the maximum allowable transmission power using the following formula (2).

[0380] P MaxTx(dBm) =I Th(dBm) +PL(d) (dB) (2)

[0381] Here, P MaxTx(dBm) is the maximum allowable transmission power, I Th(dBm) is the allowable interference power, d is the distance between the reference point and the base station device 30, and PL(d) (dB)is the propagation loss at distance d. Although the antenna gains in the transmitter / receiver are not explicitly shown in this formula, the formula can be modified and used in terms of the maximum allowable transmit power representation methods (EIRP, conducted power, etc.) or the receive power reference points (antenna input point, antenna output point, etc.). In addition, a safety margin for compensating for fluctuations caused by fading can be included. Further, feeder losses can be considered when necessary.

[0382] In addition, the above formula is described based on the assumption that a single base station device 30 is the interference source. For example, when the cumulative interference from multiple base station devices 30 must be considered simultaneously, a correction value can be added. Specifically, for example, the correction value can be determined based on three (fixed / predetermined, flexible, and flexible minimization) methods disclosed in Non-Patent Document 3.

[0383] Various models can be used as the propagation loss estimation model. When a model is specified for each use, it is preferable to use the specified model. For example, in Non-Patent Document 6, for each use, propagation loss models such as the extended Hata (eHATA) or the irregular terrain model (ITM) are adopted. Of course, when practicing the present invention, the propagation loss model need not be limited thereto.

[0384] When no model is specified for a predetermined use, the model can be selectively used as needed. As a specific example, for example, selective use can be made such that when estimating the interference power applied to other base station devices 30, an aggressive model such as the free space loss model is used, while when estimating the coverage area of the base station device 30, a conservative model is used.

[0385] When using the specified method, the spectrum utilization grant process can be performed by using the method described in Method 1 of <5-2. Available Spectrum Inquiry Process>. Specifically, for example, when it is assumed that the desired transmit power indicated by the transmit power information is used, when the estimated interference amount is less than the allowable interference power in the primary system or its protected area, it is determined that the use of the relevant frequency channel can be granted, and the base station device 30 (or the proxy device 50) is notified.

[0386] In either of the two methods, the priority of radio wave usage such as PAL or GAA can be evaluated. For example, when the registered device parameters or the inquiry requirements include information about the priority of radio wave usage, it can be determined whether spectrum usage is feasible based on the relevant priority, and the result can be notified. In addition, for example, as disclosed in Non-Patent Document 2, in the case where information about the base station device 30 that the user uses with high priority (e.g., PAL) is registered in the communication control device 40 in advance (referred to as Cluser List in Non-Patent Document 2), the evaluation can be performed based on this information.

[0387] The spectrum utilization grant process does not necessarily have to be performed when a request is received. For example, after the above registration process is normally completed, the communication control device 40 can operate independently without a spectrum utilization grant request. In addition, for example, the spectrum utilization grant determination process can be performed at regular intervals. In this case, a REM or a lookup table exemplified in Method 2 of <5-2. Available Spectrum Inquiry Process> or an information table similar to them can be created.

[0388] After the spectrum utilization grant process is completed, the communication control device 40 notifies the base station device 30 of the determination result (step S34).

[0389] <5-4. Spectrum Usage Notification / Heartbeat>

[0390] The spectrum usage notification is a process in which the base station device 30 or the proxy device 50 notifies the communication control device 40 of the spectrum usage based on the communication parameters approved for use in the spectrum utilization grant process. Generally, the base station device 30 or the proxy device 50 starts this process by notifying the communication control device 40 of a notification message including information that can identify the relevant base station device 30.

[0391] It is desirable to perform this process regularly until the use of the frequency is rejected by the communication control device 40. When this process is normally completed, the base station device 30 can start or continue radio wave transmission. For example, if the grant status is "granted", then due to the success of this process, the grant status changes to "authorized". In addition, if the grant status is "authorized", then due to the failure of this process, the grant status changes to "granted" or "idle".

[0392] Here, the grant is an authorization for the radio wave transmission given by the communication control device 40 (e.g., SAS) to the base station device 30 (e.g., CBSD). The grant can be referred to as a permission to use radio resources (frequency resources). For example, this grant is described in Non-Patent Document 2. In Non-Patent Document 2, the signaling protocol between the database (SAS) for spectrum sharing in the 3550 - 3700 MHz band used in the United States and the base station (CBSD) is standardized. In this standard, the permission for radio wave transmission given by the SAS to the CBSD is called a "grant". The operation parameters received in the grant are defined by both the maximum allowable EIRP (equivalent isotropic radiated power) and the frequency channel. That is, in order to transmit radio waves using multiple frequency channels, the CBSD needs to obtain multiple grants from the SAS.

[0393] In the grant, a status indicating the permission status of radio wave transmission is defined. Fig.19 It is a state transition diagram illustrating the permission status of radio wave transmission. Fig.19 In it, the granted state indicates a state where a grant is held but radio wave transmission is prohibited, and the authorized state indicates a state where radio wave transmission is permitted based on the operation parameter values defined in the grant. These two states transition according to the result of the heartbeat process defined in the same standard.

[0394] In the following description, the spectrum usage notification can be referred to as a heartbeat request or simply as a heartbeat. In addition, the transmission interval of the heartbeat request can be referred to as the heartbeat interval. Incidentally, the description of the heartbeat request or heartbeat appearing in the following description can be appropriately replaced with other descriptions indicating "a request for starting or continuing radio wave transmission". Similarly, the heartbeat interval can be replaced with other descriptions indicating the transmission interval of the spectrum usage notification (e.g., transmission interval).

[0395] Fig. 20 It is a sequence diagram for explaining the spectrum usage notification process. The base station device 30 or one or more communication systems including multiple base station devices 30 generate a notification message containing information capable of identifying the relevant base station device 30 (step S41) and notify the communication control device 40 (step S42). The proxy device 50 can generate and / or notify this message.

[0396] After receiving the spectrum usage notification, the communication control device 40 can determine whether to permit the start / continuation of radio wave transmission (step S43). Examples of the determination method include checking the spectrum usage information of the primary system. Specifically, based on changes in the usage frequency of the primary system, changes in the spectrum usage status of a primary system with unstable radio wave usage (e.g., shipborne radar), etc., the permission or rejection of the start / continuation of radio wave transmission can be determined.

[0397] When the determination process is completed, the communication control device 40 notifies the base station device 30 (or the proxy device 50) of the determination result (step S44).

[0398] In this process, a reconfiguration command for communication parameters can be issued from the communication control device 40 to the base station device 30 (or the proxy device 50). Generally, this can be executed in response to the spectrum usage notification. For example, recommended communication parameter information can be provided.

[0399] <5-5. Supplements for each process>

[0400] Here, as described below, each process does not necessarily have to be executed separately. For example, by replacing a third process that serves the functions of two different processes, the above two different processes can be implemented. Specifically, for example, a registration request and an available frequency information inquiry request can be notified integrally. In addition, for example, the spectrum utilization grant process and the spectrum usage notification can be executed integrally. Of course, the combination is not limited to this, and it can be a combination of three or more processes. In addition, the above processes can be executed separately.

[0401] When applying this embodiment for the purpose of sharing the spectrum with an existing system, it is advisable to select and use an appropriate process among various processes or equivalent processes based on the radio laws related to the relevant frequency band in the country / region where the technology of this embodiment is implemented. For example, when in a specific country / region, it is necessary to register a communication device in order to use a specific frequency band, it is advisable to execute the above registration process.

[0402] The expression "acquire information" in this embodiment or an equivalent expression does not necessarily mean acquiring information according to the above process. For example, although it is described that the location information of the base station device 30 is used in the available spectrum evaluation process, it is not always necessary to use the information acquired in the registration process. When the location information is included in the available frequency inquiry process request, the 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.

[0403] The push notification can include information in the response from the communication control device 40 to the base station device 30 (or the proxy device 50) shown in the above process. As a specific example, available frequency information, recommended communication parameter information, a radio wave transmission continuation rejection notification, etc. can be pushed.

[0404] <5-6. Processes regarding the terminal device>

[0405] For the terminal device 20, basically, each process described in <5-1> to <5-4> can be used. However, different from the base station device 30, the terminal device 20 has mobility. That is, the location information is updated dynamically. According to regulations, when the location information changes to a certain extent or more, re-registration with the communication control device 40 may be required. In this regard, in the operating mode defined by the Office of Communications (Ofcom) (see Non-Patent Document 4), the following two communication parameters are defined.

[0406] Specific operating parameters

[0407] General operating parameters

[0408] In this non-patent document, the specific operating parameters are defined as "operating parameters specific to a specific white space device (WSD)". In other words, the specific operating parameters are communication parameters calculated by using the device parameters of the WSD corresponding to the terminal device 20. As a feature, the specific operating parameters are calculated by the white space database (WSDB) by using the location information of the WSD.

[0409] Based on such a feature, it is envisioned that the specific operating parameters are suitable for the terminal device 20 with low mobility or fixed installation.

[0410] In this non-patent document, the general operating parameters are defined as "operating parameters that can be used by any WSD located within the coverage area of a predetermined primary WSD (corresponding to the base station device 30)". As a feature, the general operating parameters are calculated by the WSDB without using the location information of the WSD.

[0411] Based on such a feature, it is envisioned that the general operating parameters are suitable for the terminal device 20 with high mobility.

[0412] This information of the terminal device 20 can be provided from the base station device 30 through unicast / broadcast. For example, a broadcast signal represented by a contact confirmation signal defined in FCC Regulation Part 15 Subpart H can be used. Or, this information can be provided through a broadcast signal specific to the radio interface. Specifically, for example, this information can be provided through the physical broadcast channel (PBCH), NR-PBCH, etc. used in LTE and 5G NR.

[0413] <5-7. Processes occurring between communication control devices>

[0414] [Information exchange]

[0415] The communication control device 40 can exchange management information with other communication control devices 40. Fig.21 is a sequence diagram for explaining the process of exchanging management information. In Fig.21 In the example, communication control device 401 and communication control device 402 exchange information. Of course, the communication control devices that exchange information are not limited to these two, namely communication control device 401 and communication control device 402.

[0416] During the exchange process of management information, it is preferable to exchange at least the following information.

[0417] Communication device registration information

[0418] Communication device communication parameter information

[0419] Area information

[0420] The communication device registration information is generally the device parameters of the base station device 30 registered in the communication control device 40 during the registration process. Not all registration information needs to be exchanged. For example, information corresponding to personal information does not need to be exchanged. In addition, when exchanging communication device registration information, encrypted / obfuscated information can be exchanged. For example, information converted into binary values or information signed using an electronic signature mechanism can be exchanged.

[0421] The communication device communication parameter information is generally information related to the communication parameters currently used by the base station device 30. It is preferable to include at least information indicating the operating frequency and transmission power. Other communication parameters can also be included.

[0422] The area information generally indicates information about a predetermined geographical area. This information can include area information of various attributes in various ways.

[0423] For example, it can include protection area information of the base station device 30 such as the PAL protection area (PPA) disclosed in Non-Patent Document 5 as a high-priority secondary system. In this case, the area information can be represented, for example, by a set of three or more geographical location coordinates. In addition, for example, when multiple communication control devices 40 can refer to a common external database, the area information can be represented by an ID indicating relevant information.

[0424] For example, it can include information indicating the coverage area of the base station device 30. In this case, the area information can be represented, for example, by a set of three or more geographical location coordinates. In addition, for example, imagining a circle with the geographical location of the base station device 30 as the origin, the area information can also be represented by information indicating the radius size. In addition, for example, when multiple communication control devices 40 can refer to a common external database, the area information can be represented by an ID indicating relevant information.

[0425] As another aspect, information regarding zoning predetermined by a government or the like may be included. Specifically, for example, a certain area may be indicated by specifying an address. In addition, for example, a permitted area or the like may be represented in the same manner.

[0426] As another aspect, the area information does not necessarily have to represent a planar area and may represent a three-dimensional space. For example, it may be represented using a spatial coordinate system. In addition, for example, information indicating a predetermined enclosed space, such as the number of floors, floors, or room numbers of a building, may be used.

[0427] This information can be exchanged in various ways. Examples thereof are shown below.

[0428] ID Specifying Method

[0429] Period Specifying Method

[0430] Area Specifying Method

[0431] Dump Method

[0432] The ID specifying method is a method of obtaining information corresponding to the above ID by using an ID pre-allocated for identifying the information managed by the communication control device 40. For example, it is assumed that the communication control device 401 manages a base station device 30 having an ID: AAA. At this time, the communication control device 402 specifies the ID: AAA for the communication control device 401 and makes an information acquisition request. After receiving this request, the communication control device 401 searches for the ID: AAA information and notifies the registration information and communication parameter information of the corresponding base station device 30 through a response.

[0433] In the period specifying method, a specific period is specified, and information satisfying a predetermined condition within that period can be exchanged.

[0434] Examples of the predetermined condition include whether the information has been updated. For example, when acquiring communication device information within a specific period specified in a request, the registration information of a newly registered base station device 30 within the said period, or the registration information and communication parameter information of a base station device 30 whose communication parameters have changed, may be notified in the response.

[0435] Examples of the predetermined condition include whether the communication control device 40 is recording. For example, when acquiring communication device information within a specific period specified in a request, the registration information and communication parameter information of a base station device 30 recorded by the communication control device 40 within the relevant period may be notified in the response. In addition, the latest information within the relevant period may be notified. Or, the update history of each piece of information may be notified.

[0436] In the area designating method, a specific area is designated and information belonging to the relevant area is exchanged. For example, when the acquisition of communication device information within a specific area is designated in a request, the registration information and communication parameter information of the base station device 30 installed in the relevant area can be notified in the response.

[0437] The dump method is a method of providing all the information recorded by the communication control device 40. It is preferable to provide at least information about the base station device 30 and area information through the dump method.

[0438] All the explanations so far about the information exchange between the communication control devices 40 are based on the pull method. That is, it is a form of responding with information corresponding to the parameters specified in the request. For example, the exchange can be achieved by the HTTP GET method. However, the present invention is not necessarily limited to the pull method, and information can be actively provided to other communication control devices 40 through the push method. The push method can be achieved, for example, by the HTTP POST method.

[0439] [Command / Request Process]

[0440] The communication control devices 40 can execute commands and / or requests with each other. Specifically, as an example, the reconfiguration of the communication parameters of the base station device 30 can be mentioned. For example, in the case where it is determined that the base station device 301 managed by the communication control device 401 is severely interfered with by the base station device 304 managed by the communication control device 402, the communication control device 401 can request the communication control device 402 to change the communication parameters of the base station device 304.

[0441] Another example is the reconfiguration of area information. For example, in the case where it is seen that the calculation of the coverage area information and protected area information of the base station device 304 managed by the communication control device 402 is inappropriate, the communication control device 401 can request the communication control device 402 to reconfigure the relevant area information. In addition to this, the reconfiguration of area information can also be requested for various reasons.

[0442] 《6. Selection of Protection Object》

[0443] Next, the selection of the protection object will be described.

[0444] <6-1. Operating Entity of Protection Object Selection>

[0445] Fig. 22FIG. is an example diagram illustrating an apparatus that performs protection object selection and interference control. This protection object selection and interference control is performed by a communication control device 40. That is, the communication control device 40 controls the communication parameters of the communication devices in the secondary system, such as the terminal device 20 and the base station device 30. Alternatively, this protection object selection and interference control is selected and performed by the communication devices in the secondary system. Alternatively, the device that performs protection object selection and the device that performs interference control can be separate.

[0446] Fig.23 FIG. is an example diagram illustrating a communication parameter setting process of the communication devices in the secondary system. In Fig.23 the example, examples are described where the same device performs protection object selection and interference control (corresponding to the cases of Examples 1 and 2 in Fig. 22 ). For example, Fig.23 each step of the process illustrated in the figure in Fig. 22 is performed by the communication control device 40 or the communication devices in the secondary system (the terminal device 20 and the base station device 30). Here, as an example, Example 1 illustrated in the figure in

[0447] is described, and the description is made by unifying the operation subject of the process as the communication control device 40. Fig.23 As illustrated in the figure in

[0448] when it is the timing for performing interference calculation (Step S101: Yes), the selection unit 441 of the communication control device 40 selects a protection object of the communication device 10 in the primary system (Step S102). Subsequently, the calculation unit 441 of the communication control device 40 performs an interference calculation on the communication device of the protection object selected in Step S102 (Step S103). Incidentally, when it is not the timing for performing interference calculation (Step S101: No), the process proceeds to Step S106.

[0449] Fig.24 FIG. is an example diagram illustrating a protection object selection process of the communication device 10 in the primary system. In Fig.24 the example, examples are described where different devices perform protection object selection and interference control (corresponding to the cases of Examples 3 and 4 in Fig. 22 ). Here, as an example, the figure in Fig. 22Example 3 shown in the diagram is described below with the operating entity of the process being the communication control device 40.

[0450] As Fig.24 shown in the diagram, when it is time to perform protection object selection (step S201: Yes), the selection unit 441 of the communication control device 40 selects the protection object of the communication device 10 of the primary system (step S202). Subsequently, the notification unit 445 of the communication control device 40 notifies other devices, in this example, communication devices of the secondary system such as the terminal device 20 and the base station device 30, of information related to the result of the protection object selection in step S202 (step S203), and then the process ends.

[0451] Fig.25 is a diagram illustrating another example of the communication parameter setting process of the communication devices of the secondary system. In Fig.25 the example, examples are described where different devices perform protection object selection and interference control (corresponding to Fig. 22 Examples 3 and 4 in Fig. 22 shown in the diagram) are described. Here, as an example, Example 4 shown in

[0452] As Fig.25 shown in the diagram, the base station device 30 receives information about the result of the protection object selection from other devices (the terminal device 20 and the communication control device 40) (step S301). At this time, when it is time to perform interference calculation (step S302: Yes), the calculation unit 342 of the base station device 30 performs interference calculation on the communication device of the protection object received in step S301 (step S303). Incidentally, when it is not time to perform interference calculation (step S302: No), the process proceeds to step S306.

[0453] Subsequently, the determination unit 343 of the base station device 30 determines the communication parameters of the communication devices of the secondary system such as the terminal device 20 and the base station device 30 (step S304). Subsequently, the setting unit 344 of the base station device 30 sets the communication parameters in the storage unit 32, and the notification unit 345 of the base station device 30 notifies other base station devices 30, subordinate terminal devices 20, etc. of the communication parameters (step S305). After that, the base station device 30 waits for the next time to perform interference calculation (step S306).

[0454] Incidentally, in Figure 23-25In [the system], protection object selection, interference control, and communication parameter setting can be executed when a predetermined timing condition is satisfied. In addition, the predetermined timing condition can be changed depending on whether the primary system includes an air communication device. When protection object selection and interference control are performed by different devices, the device that performs protection object selection notifies the other device of the selection result or information about the selection result. For example, the other device is a device that performs interference control or sets the communication parameters of the communication device of the secondary system.

[0455] <6-2. Selection of Interference Protection Object of Air Communication Device>

[0456] In this embodiment, when the secondary system selects the communication device 10 of the primary system to be protected, the selection unit 441 of the communication control device 40, etc., switches the selection criteria depending on whether the target primary system includes the air communication device 10A.

[0457] Fig.26 is a diagram illustrating an example of a protection object selection process for explaining the selection criteria. Here, as an example, the operating entity of the process is described as the communication control device 40. As Fig.26 shown in the diagram in [the figure], when the target primary system includes the air communication device 10A (step S401: Yes), the selection unit 441 of the communication control device 40 applies the protection object selection criteria for the air communication device 10A to the air communication device 10A (step S402).

[0458] In addition, when the primary system does not include the air communication device 10A (step S401: No), or for communication devices other than the air communication device 10A in the primary system that includes the air communication device 10A, the following processing is performed. That is, the selection unit 441 of the communication control device 40 applies the protection object selection criteria that are not for the air communication device 10A (step S403).

[0459] In this embodiment, the protection object range for selecting the air communication device 10A is set above the communication devices of the secondary system such as the terminal device 20 or the base station device 30 with reference to the positions of the communication devices of the secondary system. The "above" mentioned here is not limited to directly above the communication devices of the secondary system. For example, it is the air in the normal direction of the horizontal plane where the communication devices of the secondary system are located. For example, it can include a predetermined range of the horizontal plane and the air above the normal direction of the predetermined range of the horizontal plane, and the predetermined range of the horizontal plane includes positions on the horizontal plane where the communication devices of the secondary system are located. In addition, the present invention is not limited to the normal direction of the horizontal plane, and a space whose boundary is formed by a line that forms an acute angle with the horizontal plane is also included in the air above.

[0460] In the present embodiment, as an example of the protection object selection criteria for the air communication device 10A, the position of the air communication device 10A (elevation angle (elevation angle from the ground surface or the secondary communication device), height (distance from the ground surface or the secondary system communication device), etc.) is used. In addition, the object frequency channel and the surrounding terrain are also included in the protection object selection criteria. In such a setting of the protection object selection criteria, the protection object selection is performed by the selection unit 441 of the communication control device 40, or the communication devices of the secondary system such as the terminal device 20 and the base station device 30.

[0461] When setting the range of the protection object based on the elevation angle, it is advisable to consider the surrounding environment of the communication device 10 of the primary system and the communication devices of the secondary system such as the terminal device 20 and the base station device 30. As the surrounding environment, for example, whether the link between the communication devices is line of sight (LOS) or non-line of sight (NLOS), and whether the terrain is indoor, urban, suburban, rural, or open sky, etc. are included in the protection object selection criteria. As a result of including these, the angle of the elevation angle is set.

[0462] Some examples of the situation where the surrounding environment is reflected in the elevation angle setting are described. Here, as the definition of the elevation angle, the vertex direction, for example, the normal direction of the horizontal plane where the base station device 30 is set is set to 0°, the horizontal direction is set to 90°, and the ground direction is set to 180°. In the case of this definition, the range of the protection object becomes wider as the elevation angle increases. Incidentally, the elevation angle can be defined in other ways (0°, 90°, 180°, etc.), so it should be noted that the magnitude of the elevation angle and the size of the protection object space may change according to the definition.

[0463] For example, in the case of considering LOS and NLOS, when the elevation angle for LOS is set to θ LOS , and the elevation angle for NLOS is set to θ NLOS , it is advisable that θ NLOS ≤θ LOS . One of the reasons is that in the LOS environment, radio waves are more likely to propagate, so the protection object space is set wider to increase the possibility of appropriate interference protection. In the case of LOS, the elevation angle value can be set by adding a predetermined real value θ' to the NLOS value (θ LOS =θ + θ', θ'≥0), multiplying the NLOS value by a predetermined real value α (θ LOS =α*θ', α≥1), etc.

[0464] When considering the terrain, it is advisable to set the elevation angle to a larger value as the terrain changes to indoor, urban, suburban, rural, and open sky. That is, it is advisable that θ 室内 ≤θ 市区 ≤θ 郊区 ≤θ乡村 ≤ θ 开放天空 This is also because in an open-sky terrain, radio waves are more easily propagated, so the protected object space is set wider to increase the possibility of appropriate interference protection. In addition, similar to the setting of the LOS and NLOS values described above, the elevation angle can be set by adding or multiplying a predetermined real number to / by a predetermined (standard) elevation angle.

[0465] When setting the elevation angle range, the target frequency of spectrum sharing between the primary system and the secondary system can also be included in the protected object selection criteria. For example, when there is a relationship of f1 ≤ f2 for frequencies, it is advisable to set θ f1 ≥ θ f2 .

[0466] When setting the elevation angle, an upper limit value or a lower limit value of the elevation angle value can be set. Thus, it becomes simple to roughly exclude the airborne communication device 10A outside the protected object range (protected object space).

[0467] For the airborne communication device 10A outside this elevation angle, the objects can be roughly screened so as not to be included in the protected objects. Regarding the setting of the upper limit value of the tangent line with the ground surface, it is advisable to consider the heights of the communication devices of the secondary system such as the terminal device 20 and the base station device 30.

[0468] Regarding the upper limit value and the lower limit value, the setting method or the set value can vary depending on the surrounding environment. For example, similar to the previous LOS / NLOS and terrain, for the upper limit value and the lower limit value, an appropriate range can be set by setting the size relationship. In addition, it is advisable that the upper limit value is equal to or less than the elevation angle of the tangent line with the ground surface.

[0469] Fig. 27 is a diagram illustrating an example of setting the protected object range based on the elevation angle. In Fig. 27 the example, the elevation angle θ LOS is indicated by a dotted line, while the elevation angle θ NLOS is indicated by a dashed line. These elevation angles θ LOS and the elevation angle θ NLOS can be set, for example, according to the process illustrated in Fig.28 .

[0470] Fig.28 is a diagram illustrating an example of the process of setting the protected object range based on the elevation angle. Here, as an example, the operation main body of the process is described as the communication control device 40. As illustrated in Fig.28 , the selection unit 441 of the communication control device 40 determines the parameters for setting the protected object range based on the information about the surrounding environment and the information about the target frequency (step S501).

[0471] Subsequently, the selection unit 441 of the communication control device 40 sets the upper limit value or the lower limit value of the elevation angle according to the parameter determined in step S501 (step S502). Then, the selection unit 441 of the communication control device 40 sets the value of the elevation angle of the protection object within the range that does not violate the upper limit value or the lower limit value set in step S502 (step S503).

[0472] As a result of step S503, when obtaining the elevation angle θ Fig. 27 illustrated in the figure LOS or the elevation angle θ NLOS the following protection object selection results are obtained. For example, when selecting a protection object based on the position and elevation angle θ LOS of the air communication device 10A, among the air communication devices 10A1 to 10A8 of the air communication device 10A, 4 air communication devices 10A, namely 10A3 to 10A6, are selected as protection objects. On the other hand, for example, when selecting a protection object based on the position and elevation angle θ NLOS of the air communication device 10A, the air communication devices 10A3 and 10A6 are not selected, and 2 air communication devices 10A, namely the air communication devices 104 A and 105 A are selected as protection objects.

[0473] Fig.29 is a diagram illustrating an example of setting a protection object range based on the elevation angle. In the Fig.29 example, an example of setting the upper limit value θ UpperLimit to the elevation angle of the tangent to the ground surface is described. As shown by the double-dashed line in Fig.29 , by setting the upper limit value θ UpperLimit , before using the elevation angle θ LOS or the elevation angle θ NLOS to select a protection object, 2 air communication devices 10A, namely 10A1 and 10A6 among the air communication devices 10A1 to 10A6, can be excluded from the protection objects. Thus, the efficiency of selecting a protection object is improved.

[0474] Set the range based on the elevation angle in a form including the above determination. For example, when viewed from a communication device of a secondary system such as the terminal device 20 or the base station device 30, the same elevation angle range within 360° horizontally can be used as the protection object space. That is, in the Fig.29 example, it is a three-dimensional conical range. In addition, the elevation angle can be further adjusted in the horizontal direction. For example, the elevation angle can be adjusted according to the direction where there are high-rise buildings or the direction where there are no high-rise buildings (decrease the elevation angle in the direction where there are buildings around, and increase the elevation angle in the direction where there are no buildings around). The horizontal adjustment can be performed at a predetermined horizontal angle, for example, every 1° or every 10°.

[0475] After setting the protected object space, the selection unit 441 of the communication control device 40 selects the air communication device 10A to be protected from among the air communication devices of the primary system such as the base station device 30 based on this range. The air communication device 10A selected in this way can be a single unit or multiple units.

[0476] In this embodiment, for example, the selection unit 441 of the communication control device 40 can change the determination of whether selection is possible depending on whether the position (or flight path) of the target air communication device 10A can be acquired.

[0477] Fig.30 FIG. is an example diagram showing a protected object selection process that illustrates a comparison between the added protected object space and the position of the air communication device. Here, as an example, the operating entity of the process is described as the communication control device 40.

[0478] As Fig.30 shown in the figure, in the case where the position of the air communication device 10A cannot be acquired (step S601: No), the selection unit 441 of the communication control device 40 includes the air communication device 10A in the protected object (step S604). This is because there is insufficient information to determine whether to protect by comparing with the protected object space.

[0479] On the other hand, in the case where the position of the air communication device 10A can be acquired (step S601: Yes), the selection unit 441 of the communication control device 40 compares the acquired position with the above-set protected object space (step S603).

[0480] Here, as a result of the comparison in step S603, in the case where the position is included in the set protected object space (conical range or a range equivalent to a conical shape) (step S603: Yes), the selection unit 441 of the communication control device 40 includes the air communication device 10A in the protected object (step S604). On the other hand, in the case where the position is not included in the protected object space (step S603: No), the selection unit 441 of the communication control device 40 does not include the air communication device 10A in the protected object (step S605).

[0481] Incidentally, in Fig.30In the process, in step S601 of the process, replace "position" with "flight path". In step S601, it can be determined whether the flight path of the air communication device 10A is known, and whether the degree of reliability of the flight path information is above a predetermined threshold. In the case of making such a determination, when the flight path is known and the degree of reliability of the flight path information is equal to or higher than the predetermined threshold, the process proceeds to the branch of step S601: Yes. In addition, in the case where the flight path of the air communication device 10A is unknown or the degree of reliability of the flight path information is lower than the predetermined threshold, the process proceeds to the branch of step S601: No. Examples of such cases where the position and path cannot be obtained include cases like drones that cannot be predicted where they will fly. In addition, it includes cases where both the position and path are not public, like communication devices for military use.

[0482] In the present embodiment, as Fig.30 a variant of the process illustrated in the figure, the selection unit 441 of the communication control device 40 may include the altitude of the air communication device 10A (or the distance between the secondary communication device and the air communication device 10A) in the protection object selection criteria. For example, the selection unit 441 of the communication device 40 includes air communication devices with an altitude (distance) lower (closer) than a predetermined value as protection object candidates, and sets the air communication devices that further enter the protection object space based on the elevation angle among the candidates as protection objects. Thus, the computational amount of interference control in the subsequent stage can be reduced.

[0483] Fig.31 is a diagram illustrating an example of setting the protection object range based on the elevation angle and altitude. In Fig.31 the example, together with the elevation angle θ LOS and the elevation angle θ NLOS the boundary of the protection object range based on altitude is indicated by a double-dot dash line. As Fig.31 illustrated in the figure, when only using the elevation angle θ LOS or the elevation angle θ NLOS to select protection objects, 4 air communication devices 10A among the air communication devices 10A1 to 10A8, namely the air communication devices 10A3 to 10A6, are selected as protection objects. On the other hand, as Fig.31 shown by the double-dot dash line in the figure, when the boundary of the protection object range based on altitude is further used for the selection of protection objects, the air communication devices 10A3 and 10A4 existing outside the boundary of the protection object range based on altitude can be excluded from the protection objects.

[0484] Fig.32 is a diagram illustrating an example of the protection object selection process of the protection object range using altitude. Here, as an example, the operating entity of the process is described as the communication control device 40.

[0485] As Fig.32 shown in the illustration in the middle, in the case where the position of the airborne communication device 10A cannot be acquired (step S701: No), the selection unit 441 of the communication control device 40 includes the airborne communication device 10A in the object to be protected (step S705). This is because there is insufficient information to determine whether to protect by comparing with the protected object space.

[0486] On the other hand, in the case where the position of the airborne communication device 10A can be acquired (step S701: Yes), the selection unit 441 of the communication control device 40 determines whether the height of the airborne communication device 10A is lower than a predetermined value, in other words, whether the airborne communication device 10A is close (step S702).

[0487] At this time, in the case where the height of the airborne communication device 10A is lower than the predetermined value (step S702: Yes), the selection unit 441 of the communication control device 40 compares the acquired position with the protected object space set above (step S703).

[0488] Here, as a result of the comparison in step S703, in the case where the position is included in the set protected object space (conical range or a range equivalent to a conical shape) (step S704: Yes), the selection unit 441 of the communication control device 40 includes the airborne communication device 10A in the object to be protected (step S705). In addition, in the case where the height of the airborne communication device 10A is equal to or greater than the predetermined value, or in the case where the position is not included in the protected object space (step S702: No or step S704: No), the selection unit 441 of the communication control device 40 does not include the airborne communication device 10A in the object to be protected (step S706).

[0489] As an example, a conical space or a space equivalent to a conical shape is set as the protected object space. However, the protected object space is not limited to this. For example, as another variant, a space that extends from the ground in the vertex direction and in which, when comparing the cross-sectional area obtained by truncating the space at a certain height and the cross-sectional area obtained by truncating at another height, the cross-sectional area obtained by truncating at a higher height is larger can be set as the protected object space. In this case, the space becomes different from a pure conical shape, so there may be cases not restricted by the setting of the protected object space based on the elevation angle. However, in this embodiment, instead of the elevation angle, the protected object space can be set based on the growth rate of the cross-sectional area with respect to the height. Assume that the cross-sectional area grows proportionally to the height, the growth rate per unit height is β (β≥1), and instead of the elevation angle, the value of β is adjusted. The magnitude of the elevation angle θ can be replaced by the magnitude of the growth rate β.

[0490] Fig.33This is a diagram illustrating an example of the protected object space of an airborne communication device set according to the growth rate of the cross-sectional area relative to the height (β≥1). As Fig.33 As shown in the diagram in the middle, for three different heights h1, h2, and h3 (h1 < h2 < h3), three cross-sectional areas S1, S2, and S3 are illustrated. It is preferable to have the relationship S1 ≤ S2 ≤ S3 as the relationship among these three cross-sectional areas, and relationships such as S2 = (h2 - h1) * β * S1, S3 = (h3 - h1) * β * S1.

[0491] As another embodiment regarding the protected object space, a protected object space in which the cross-sectional area decreases as the height increases (β≤1) can be adopted. This means that the number of primary system communication devices to be protected decreases as the height increases (the distance from the secondary system communication device on the ground increases). From the perspective of the elevation angle, this situation means that the elevation angle is a function of the height of the communication device 10 of the primary system, and the elevation angle to be considered decreases as the height increases.

[0492] Fig.34 This is a diagram illustrating yet another example of the protected object space of an airborne communication device set according to the growth rate of the cross-sectional area relative to the height (β≤1). As Fig.34 As shown in the diagram in the middle, for three different heights h1, h2, and h3 (h1 > h2 > h3), three cross-sectional areas S1, S2, and S3 are illustrated. The relationship among these three cross-sectional areas is S1 ≤ S2 ≤ S3, but the individual cross-sections do not have to be similar.

[0493] As another embodiment, a space in which the cross-sectional area of the protected object space is constant (β = 1) regardless of the height can be adopted. From the perspective of the elevation angle, this situation also means that the elevation angle is a function of the height of the communication device 10 of the primary system, and the elevation angle to be considered decreases as the height increases.

[0494] Fig.35 This is a diagram illustrating another example of the protected object space of an airborne communication device set according to the growth rate of the cross-sectional area relative to the height (β = 1). As Fig.35 As shown in the diagram in the middle, for the same heights h1, h2, and h3 (h1 = h2 = h3), three cross-sectional areas S1, S2, and S3 are illustrated. The relationship among these three cross-sectional areas is S1 = S2 = S3, but the individual cross-sections do not have to be similar.

[0495] When comparing Fig.34 the example of the protected object space shown in the diagram in the middle and Fig.35 the example of the protected object space shown in the diagram in the middle, Fig.34 the example of the protected object space shown in the diagram in the middle has a smaller elevation angle relative to the height.

[0496] In this embodiment, when determining whether it is included in the protected object space, the selection unit 441 of the communication control device 40 may also include the flight path of the aerial communication device 10A in the protected object selection criteria. Here, examples of information on the flight path of the aerial communication device include the speed, direction, orbit, etc. of the aerial communication device 10A.

[0497] Fig.36 is a diagram illustrating an example of the flight path of the aerial communication device 10A. As Fig.36 shown in the diagram, the selection unit 441 of the communication control device 40 may include the aerial communication device 10A located in the protected object space at a certain time as a protected object. It can be said that this is a measure to more reliably protect the aerial communication device 10A, such as a geostationary orbit satellite communication device, a geostationary earth orbit (GEO) and a geosynchronous orbit (GSO), which seems stationary from the ground. In addition, in the case where there is an aerial communication device that seems to move from the ground, it can be said that this is a measure to more reliably protect the seemingly moving aerial communication device 10A. Examples of such an aerial communication device 10A correspond to low earth orbit satellite communication devices, low earth orbit (LEO), medium earth orbit satellite communication devices, medium earth orbit (MEO), aircraft (airplanes, aircraft, and flying vehicles), and drones.

[0498] Here, for example, the start and end points of the time series data of the coordinates included in the flight path to be compared with the protected object space correspond to the respective time intervals in the case of the aerial communication device to be protected that is selected at a certain timing and selected at the next selected timing.

[0499] Fig.37 is a diagram illustrating an example of the correspondence between the time interval of the timing of protected object selection and the start and end points of the time series data of the flight path. In Fig.37 the example, an example is shown in which the time interval of the timing of protected object selection matches the time interval of the start and end points of the time series data of the flight path to be compared with the protected object space. For example, at the timing of protected object selection at time t0, the time series data of the flight path from time t0 to time t1 is compared with the protected object space.

[0500] In addition, the selection unit 441 of the communication control device 40 may set the interval between the start and end points of the time series data of the flight path to be greater than the time interval of the timing of protected object selection. Fig.38 and 39 is a diagram illustrating an example of the correspondence between the time interval of the timing of protected object selection and the start and end points of the time series data of the flight path. In Fig.38In the example, an example is described in which the end point of the timing data of the flight path to be compared with the protected object space is set after the latter selection timing among the two protected object selection timings. In addition, in Fig.39 In the example, an example is described in which the start point of the timing data of the flight path to be compared with the protected object space is set before the former selection timing among the two protected object selection timings, and the end point of the timing data of the flight path is set after the latter selection timing among the two protected object selection timings. This is also a measure to reliably protect the moving air communication device 10A.

[0501] On the contrary, in order to reduce the number of communication devices 10 of the primary system to be protected and reduce the complexity of interference calculation, at least one of the start point or the end point in the above time can be set narrower than the interval of the protected object selection timing. In this case, this is not always desirable from the perspective of appropriately protecting the primary system, but in some cases, priority is given to reducing the complexity of interference calculation.

[0502] <6-3. Interference calculation>

[0503] In the present embodiment, the calculation unit 442 of the communication control device 40 calculates the amount of interference imposed on the communication device 10 of the primary system from the communication devices of the secondary system such as the terminal device 20 and the base station device 30 based on the result of the protected object selection selected by the selection unit 441.

[0504] Fig.40 is a diagram illustrating a model example of the calculation of the amount of interference imposed from the secondary system to the primary system. Fig.40 The solid line shown in indicates the interference imposed on the protected object communication device selected as a result of the protected object selection. For example, the results of the protected object selections of the base station device 301 and the terminal device 201 are the air communication devices 10A1, 10A2, and 10A3. In addition, the results of the protected object selections of the base station device 302 and the terminal device 202 are the air communication devices 10A2, 10A3, and 10A4. In addition, the results of the protected object selections of the base station device 303 and the terminal device 203 are the air communication devices 10A3, 10A4, and 10A5. As Fig.40 As illustrated in the figure, depending on the communication devices of the secondary system such as the terminal device 20 and the base station device 30, the selection results of the protected object communication devices may be different. That is, when there is a relationship between the terminal device 20 and the base station device 30, among the terminal devices 20 connected to the same base station device 30, the communication devices that are the same as the communication devices included in the protected objects of the base station device 30 can be regarded as protected objects.

[0505] Fig.41This is a diagram illustrating an example of the calculation process of the cumulative interference amount. Here, as an example, the operating entity of the process is described as the communication control device 40. As Fig.41 As shown in the diagram, the calculation unit 442 of the communication control device 40 selects one of the communication devices 10 in the primary system (step S801).

[0506] Subsequently, the calculation unit 442 of the communication control device 40 selects one of the communication devices in the secondary system such as the terminal device 20 and the base station device 30 (step S802). Then, the calculation unit 442 of the communication control device 40 calculates the interference amount applied from the secondary system communication device selected in step S802 to the communication device 10 in the primary system selected in step S801 (step S803).

[0507] After that, the calculation unit 442 of the communication control device 40 calculates the cumulative interference amount for the communication device 10 in the primary system selected in step S801 by summing up the interference amounts applied from all the predetermined secondary system communication devices (step S804).

[0508] Fig.42 This is a diagram illustrating an example of the calculation process of the interference amount applied based on the protection object selection result. Here, as an example, the operating entity of the process is described as the communication control device 40. As Fig.42 As shown in the diagram, when the object primary communication device 10 is included in the protection object space of the object secondary communication device (step S901: Yes), the calculation unit 442 of the communication control device 40 performs the following processing.

[0509] That is, the calculation unit 442 of the communication control device 40 performs a detailed interference amount calculation considering the radio wave propagation characteristics (step S902). In other words, an interference amount calculation with a larger amount of calculation than step S904 described later, such as calculating parameters, is performed.

[0510] On the other hand, when the object primary communication device 10 is not included in the protection object space of the object secondary communication device (step S901: No), the calculation unit 442 determines whether to calculate the interference for the communication device 10 in the object primary system (step S903).

[0511] Here, examples of the conditions in step S903 include the height of the communication device 10 of the primary system. For example, in the case where the height is lower than a predetermined height, interference is calculated. In this case, it is preferable that the predetermined height is greater than (higher than) the height defining the protected object area (space). Further, another example of the condition in step S903 is the distance between the communication device 10 of the primary system and the communication devices of the secondary system such as the terminal device 20 and the base station device 30. For example, in the case where the distance is less than a predetermined value, interference is calculated. Further, another example of the condition in step S903 is the angular relationship between the communication device 10 of the primary system and the communication devices of the secondary system such as the terminal device 20 and the base station device 30. For example, in the case where the angle is within a predetermined angle range starting from the half-value angle of the antenna directivity of the communication device of the secondary system or the communication device 10 of the primary system, interference is calculated. Further, in the case where the angle is within a predetermined angle range, interference is calculated. In this case, it is preferable that the predetermined angle is greater than (wider than) the elevation angle defining the protected object space. Further, another example of the condition in step S903 is the position of the communication device 10 of the primary system or the communication device of the secondary system. For example, in the case where the position is within a predetermined country / region, interference is calculated.

[0512] Subsequently, in the case of calculating the interference for the communication device 10 of the target primary system (step S903: Yes), the calculation unit 442 of the communication control device 40 performs the following processing.

[0513] That is, the calculation unit 442 of the communication control device 40 performs a rough interference amount calculation considering the radio wave propagation characteristics, or an interference amount calculation without considering the radio wave propagation characteristics (step S904). In other words, an interference amount calculation with a smaller amount of calculation than that in step S902 described later, such as calculation parameters, is performed.

[0514] In the case of not calculating the interference for the communication device 10 of the target primary system (step S903: No), the calculation unit 442 of the communication control device 40 sets the interference amount to 0 (step S905).

[0515] As described above, in Fig.42 the examples, different interference calculations are performed for each branch of step S901 and further for each branch of step S903.

[0516] Fig.43 is a diagram illustrating an example of a calculation flow of the applied interference amount based on the protection object selection result. Here, as an example, the operation subject of the flow is described as the communication control device 40. As Fig.43As shown in the figure, when the object primary communication device 10 is included in the protected object space of the object secondary communication device (step S1001: Yes), the calculation unit 442 of the communication control device 40 performs the following processing.

[0517] That is, the calculation unit 442 of the communication control device 40 performs a fine interference amount calculation considering the radio wave propagation characteristics (step S1002). In other words, an interference amount calculation with a larger amount of calculation than step S1004 described later is performed, such as an interference amount calculation of calculation parameters.

[0518] On the other hand, when the object primary communication device 10 is not included in the protected object space of the object secondary communication device (step S1001: No), the calculation unit 442 determines whether to calculate the interference on the communication device 10 of the object primary system (step S1003).

[0519] Subsequently, when calculating the interference on the communication device 10 of the object primary system (step S1003: Yes), the calculation unit 442 of the communication control device 40 performs a fine interference amount calculation considering the radio wave propagation characteristics (step S1002).

[0520] When not calculating the interference on the communication device 10 of the object primary system (step S1003: No), the calculation unit 442 of the communication control device 40 performs the following processing. That is, the calculation unit 442 of the communication control device 40 performs a rough interference amount calculation considering the radio wave propagation characteristics, or an interference amount calculation without considering the radio wave propagation characteristics (step S1004). In other words, an interference amount calculation with a smaller amount of calculation than step S1002 described later is performed, such as an interference amount calculation of calculation parameters.

[0521] When not calculating the interference on the communication device 10 of the object primary system (step S903: No), the calculation unit 442 of the communication control device 40 sets the interference amount to 0 (step S905).

[0522] In this way, in Fig.43 In the example of, when a positive result is obtained in the branch of step S901 or the branch of step S903, a fine calculation is performed.

[0523] Fig.44 is a diagram illustrating an example of the calculation process of the applied interference amount based on the protected object selection result. Here, as an example, the operation subject of the process is described as the communication control device 40. As Fig.44 As shown in the figure, when the object primary communication device 10 is included in the protected object space of the object secondary communication device (step S1101: Yes), the calculation unit 442 of the communication control device 40 performs the following processing.

[0524] That is, the calculation unit 442 of the communication control device 40 performs a detailed interference amount calculation that takes into account radio wave propagation characteristics (step S1102). In other words, an interference amount calculation with a larger amount of calculation than that in step S1103 described later is performed, for example, an interference amount calculation of calculation parameters.

[0525] On the other hand, when the target primary communication device 10 is not included in the protected object space of the target secondary communication device (step S1101: No), the calculation unit 442 performs the following processing. That is, the calculation unit 442 of the communication control device 40 performs a rough interference amount calculation that takes into account radio wave propagation characteristics, or an interference amount calculation that does not take into account radio wave propagation characteristics (step S1103). In other words, an interference amount calculation with a smaller amount of calculation than that in step S1102 described later is performed, for example, an interference amount calculation of calculation parameters.

[0526] In this way, in Fig.44 the example of, one of the detailed calculation and the rough calculation is selected in the branch of step S901.

[0527] The cumulative interference amount for the communication device p of a certain primary system is calculated by the following formula (3) (expressed as a true value or a linear value):

[0528]

[0529] Here, I p,s indicates the interference amount applied from the communication devices of the secondary system such as the terminal device 20 and the base station device 30 to the communication device p of the primary system. In addition, S p indicates the set of secondary system communication devices to be considered when calculating the interference applied to the communication device p of the primary system.

[0530] When represented in a paged manner, the cumulative interference amount is calculated by the following formula (4) (the meanings of the variables are the same as above except for the units).

[0531]

[0532] For I p,s , this calculation varies depending on the relationship between the communication device of the primary system and the communication devices of the secondary system. For example, when the communication device 10 of the primary system is included in the protected object of the communication devices of the secondary system, an interference amount calculation that takes into account radio wave propagation characteristics, characteristics of the communication devices, etc. is performed. This interference amount calculation corresponds to the interference amount calculations performed in step S902, step S1002, and step S1102 illustrated in Figure 42-44 . For example, this is calculated by the following formula (5) (expressed as a direct value or a linear value).

[0533] I p,s = L p,s (env, f, x p , y p , z p , x s , y s , z s ) A p (x p , y p , z p , x s , y s , z s ) A s (x p , y p , z p , x s , y s , z s ) (5)

[0534] Here, L p,s () indicates a model of radio wave propagation characteristics between the communication device of the secondary system and the communication device of the primary system (e.g., path loss, path gain, etc.). In addition, f indicates the target frequency. In addition, x, y, and z indicate the location information of the communication device (e.g., longitude, latitude, altitude, etc.). In addition, env represents a variable / index indicating the surrounding environment, terrain, air / ground, etc. In addition, A() indicates the antenna characteristics of the communication device (e.g., directivity, gain, etc.). In addition, P T,s indicates the transmission power of the communication device of the secondary system.

[0535] When represented in pages, the cumulative interference amount is calculated using the following formula (6) (the meanings of the variables are the same as above except for the units).

[0536] I dBm,p,s = L dB,p,s (env, f, x p , y p , z p , x s , y s , z s ) + A dB,p (x p , y p , z p , x s , y s , z s ) + A dB,s (x p , y p , z p , x s , y s,z s (6)

[0537] When the communication device of the primary system is not included in the protected object, a simpler interference amount calculation can be adopted compared with the case where the communication device is included. For example, an interference amount calculation that takes into account in detail the radio wave propagation characteristics and the characteristics of the communication device is performed. This interference amount calculation corresponds to the interference amount calculation performed in steps S904, S1004, and S1103 illustrated in Figure 42-44 . As an example, as described below, the interference amount can be set to 0. Or, the communication device s of the target secondary system can be excluded from the set S.

[0538] I p,s = 0

[0539] I dBm,p,s = -∞

[0540] Or, as described below, the interference amount can be calculated as a fixed amount.

[0541] I p,s = I C

[0542] I dBm,p,s = I dBm,C

[0543] Or, as shown in the following formulas (7) and (8), the interference amount can be calculated without considering the antenna characteristics.

[0544] I p,s = L p,s (env,f,x p ,y p ,z p ,x s ,y s ,z s )P Tx,s (7)

[0545] I dBm,p,s = L dB,p,s (env,f,x p ,y p ,z p ,x s ,y s ,z s ) + P dBm,Tx,s (8)

[0546] Fig.45 is a diagram illustrating an example of the protected object selection result. Fig.45 Illustrated in Fig.42The results of the selection of the protected objects among the aerial communication devices 10A1 to 10A selected in the decision branches of steps S901 and S903 of the process shown in the diagram. In addition, 13 The diagram illustrates the elevation boundary line L1 and the height boundary line H1 of the protected object space used in the determination of step S901 of the process. In addition, Fig.45 The diagram illustrates the elevation boundary line L2 and the distance boundary line H2 used to determine whether to perform the rough interference amount calculation in step S903 of the process. Fig.45

[0547] As Fig.45 shown in the legend of Fig.42 In the process shown in the diagram, among the aerial communication devices 10A1 to 10A 13 the aerial communication devices 10A6 and 10A9 located within the elevation boundary line L1 and the height boundary line H1 are selected as protected objects. These aerial communication devices 10A6 and 10A9 undergo a fine interference amount calculation. In addition, in Fig.42 the process shown in the diagram, among the aerial communication devices 10A1 to 10A 13 the aerial communication devices 10A1, 10A4, 10A7, 10A 10 , 10A 11 and 10A 12 located within the elevation boundary line L2 or the distance boundary line D1 and outside the elevation boundary line L1 and the height boundary line H1 are selected as protected objects. These aerial communication devices 10A1, 10A4, 10A7, 10A 10 , 10A 11 and 10A 12 undergo a fine interference amount calculation. For the other aerial communication devices 10A2, 10A3, 10A8 and 10A 13 the interference amount is set to 0.

[0548] Fig.46 is a diagram illustrating an example of the protected object selection result. Fig.46 The diagram illustrates the elevation boundary line L1 and the height boundary line H1 of the protected object space used in the determination of step S1001 of the process. In addition, Fig.43 The diagram illustrates the results of the selection of the protected objects among the aerial communication devices 10A1 to 10A selected in the decision branches of steps S1001 and S1003 of the process shown in the diagram. In addition, 13 Fig.46 The diagram illustrates the elevation boundary line L1 and the height boundary line H1 of the protected object space used in the determination of step S1001 of the process. In addition, Fig.46 The diagram illustrates the elevation boundary line L2 and the distance boundary line H2 used to determine whether to perform the rough interference amount calculation in step S1003 of the process.

[0549] As Fig.46 shown in the legend of Fig.43 in the process illustrated in the figure, among the air communication devices 10A1 to 10A 13 among them, the air communication devices 10A6, 10A9, 10A1, 10A4, 10A7, 10A 10 , 10A 11 and 10A 12 are selected as the objects to be protected. These air communication devices 10A6, 10A9, 10A1, 10A4, 10A7, 10A 10 , 10A 11 and 10A 12 undergo fine interference amount calculation. The interference amounts of the air communication devices 10A other than these are set to 0.

[0550] Fig.47 is a diagram illustrating an example of the protection object selection result. Fig.47 Illustrates the result of the selection of the protection objects of the air communication devices 10A1 to 10A selected in the determination branch of step S1101 of the process illustrated in Fig.44 the figure. In addition, 13 illustrates the elevation boundary line L1 and the height boundary line H1 of the protection object space used in the determination of step S1101 of the process. As Fig.47 shown in the legend of Fig.47 in the process illustrated in Fig.44 the figure, among the air communication devices 10A1 to 10A 13 among them, the air communication devices 10A6 and 10A9 located within the elevation boundary line L1 and the height boundary line H1 are selected as the protection objects. These air communication devices 10A6 and 10A9 undergo fine interference amount calculation. The interference amounts of the air communication devices 10A other than these are set to 0.

[0551] Fig.48 is a diagram illustrating an example of the calculation process of the applied interference amount. Here, as an example, the operation main body of the process is described as the communication control device 40. As Fig.48As shown in the figure, when the primary system includes the air communication device 10A (step S1201: Yes), the calculation unit 442 of the communication control device 40 applies the interference calculation for the air communication device to the air communication device 10A (step S1202). After that, the calculation unit 442 of the communication control device 40 applies the interference calculation not for the air communication device to the communication devices other than the air communication device 10A, that is, the ground communication terminal 10B and the ground fixed communication device 10C (step S1203). Incidentally, when the primary system does not include the air communication device 10A (step S1201: No), the calculation unit 442 of the communication control device 40 skips the process of step S1202 and executes the process of step S1203.

[0552] <6-4. Reference Points for Interference Calculation>

[0553] When calculating the applied interference as described above, it is necessary to calculate the amount of applied interference for each position of the communication device 10 in the primary system. Since the positions of the communication devices 10 in the primary system are basically continuous values, the amount of calculation will increase significantly with the number of communication devices.

[0554] Therefore, in the present embodiment, in order to suppress the increase in the amount of calculation, the calculation unit 442 of the communication control device 40 calculates the amount of applied interference by using the positions of discretely arranged reference points (reference points, protection points, interference protection points, hereinafter referred to as reference points), rather than the positions of actual communication devices. In addition, when the arrangement of the reference points is set to be specific to each communication device of the secondary system such as the terminal device 20 and the base station device 30, the interference calculation can be further simplified.

[0555] Fig.49 is a diagram illustrating an example of the arrangement of reference points. Fig.49 Schematically illustrates a top view in the case where the reference points are arranged in a grid pattern. Fig.49 In, there are communication devices (candidate interference sources for the primary system) 30 of the secondary system and three air communication devices (communication devices that may be interfered with by the communication devices of the secondary system) 10A1 to 10A3. When accurately calculating the amount of applied interference, the interference amount calculation is performed using the actual positions (latitude, longitude, altitude, etc.) where the air communication devices 10A exist. On the other hand, in the present embodiment, the positions of the air communication devices 10A are mapped to the reference points arranged according to a predetermined rule ( Fig.49any one of the black squares in), and use the position (latitude, longitude, altitude, etc.) of the mapped reference point to calculate the amount of interference applied to the position of the air communication device 10A. An example of a reference point obtained by mapping the position of the air communication device 10A can be a reference point having the shortest distance (nearest distance) from the actual position of the air communication device 10A. (The relationship indicated by the red arrow in the figure can be imagined). In addition, a plurality of reference points for mapping the air communication device 10A can be set. For example, the position can be mapped to a reference point having a distance that is not the shortest but equivalent to the shortest (quasi-shortest distance). The position can be mapped to N reference points in ascending order of distance. For the communication device p of the primary system, the number of reference points to be mapped is set to N RP,p ( RP,p ( Fig.49 corresponding to N RP,p = 4). Incidentally, the arrangement of the reference points can be composed of a finite number of reference points. In this case, as illustrated in the upper right part of Fig.49 , the communication device of the primary system may be located farther outside the arrangement of the reference points. In this case, the number of reference points to be mapped may be less than a predetermined value.

[0556] For example, for the air communication device 10A1, the air communication device 10A1 is mapped to the reference point G 11 ~ G 14 that is the reference point G with the shortest distance from the air communication device 10A1 among them. In addition, for the air communication device 10A2, the air communication device 10A2 is mapped to the reference point G 14 ~ G 21 that is the reference point G with the shortest distance from the air communication device 10A2 among them. 24 For example, for the air communication device 10A3, the air communication device 10A3 is mapped to the reference point G3 with the shortest distance from the air communication device 10A3. 21 . Incidentally, for the example of the air communication device 10A3, the air communication device 10A3 is mapped to the reference point G3 with the shortest distance from the air communication device 10A3.

[0557] Fig.50 is a diagram illustrating another arrangement example of the reference points. Fig.50 The schematic diagram illustrates a top view in the case of radially arranging reference points from the base station device 30. Similar to Fig.49 , in Fig.50 , there are communication devices (candidate interference sources for the primary system) 30 of the secondary system and three air communication devices (communication devices that may be interfered with by the communication devices of the secondary system) 10A1 to 10A3. In Fig.50 's example, reference points are arranged at equal intervals on all the radial lines. Additionally, in Fig.50 's example, like Fig.40Similar to the example, mapping of the air communication device 10A is possible. For example, for the air communication device 10A1, the air communication device 10A1 is mapped to the reference point G 11 and G 12 which is the reference point G with the shortest distance to the air communication device 10A1 in 12 In addition, for the air communication device 10A2, the air communication device 10A2 is mapped to the reference point G 21 ~G 24 which is the reference point G with the shortest distance to the air communication device 10A2 in 24 In addition, for the air communication device 10A3, the air communication device 10A3 is mapped to the reference point G 31 ~G 34 which is the reference point G with the shortest distance to the air communication device 10A3 in 34 .

[0558] In Fig.50 the example, reference points are arranged at equal intervals on all radial lines. However, for each radial line, the arrangement of the reference points can also be non-uniform.

[0559] Fig.51 is a diagram illustrating another example of the arrangement of reference points. As Fig.51 illustrated in the figure, when the reference points are arranged non-uniformly for each radial line, for each radial line, the reference point with the shortest distance to the base station device 30 may be different. This is because when the reference points are arranged radially, the density of the reference points decreases as the distance from the center (in this example, the base station device 30) increases. Thus, the difference between the interference amount calculated at the reference point and the actual interference amount applied to the air communication device 10A may increase as the distance from the center increases. Therefore, the arrangement of the reference points on each radial line is non-uniform, and for each radial line, the shortest distance of the reference point to the communication device of the secondary system such as the base station device 30 is different. Thus, even in the part far from the communication device of the secondary system, the decrease in the density of the reference points can be alleviated. In addition, when considering concentric circles centered on the base station device 30, the reference points can be arranged at all intersections of a certain concentric circle and the radial lines. Or, the reference points can be arranged only on a part of the intersections of the concentric circle and the radial lines.

[0560] Fig.52 is a diagram illustrating an example of the selection process of the reference points. Here, as an example, the operating entity of the process is described as the communication control device 40. As Fig.52As shown in the figure, the calculation unit 442 of the communication control device 40 sets the number NRP of reference points to be mapped (step S1301). Subsequently, the calculation unit 442 of the communication control device 40 increments the loop counter n (step S1302).

[0561] Then, the following steps S1304 and S1305 are executed until the loop counter n is incremented to the number NRP of reference points (step S1303: Yes). That is, in step S1304, the calculation unit 442 of the communication control device 40 selects the nth shortest distance reference point. Then, in step S1305, the calculation unit 442 of the communication control device 40 increments the loop counter n, and the process returns to the process of step S1303. After that, when the loop counter n is incremented to the number NRP of reference points (step S1303: No), the process ends.

[0562] Even when the reference points are arranged in a three-dimensional space, this embodiment is applicable. For example, when the reference points are arranged in the air, the communication device of the secondary system of the base station device 30 is set as the center, and the outer boundary line of the protected object area formed by the elevation angle is set as the outer edge where the reference points are arranged. In the protected object area, the reference points can be arranged on the rays passing through the center. In addition, the reference points do not necessarily have to be arranged in the air and can be arranged on a horizontal plane.

[0563] When considering the mapping of the reference point with the shortest distance and the reference point with the quasi-shortest distance, in the Fig.49 example and Fig.50 example, the plane surrounded by multiple (for example, 3 or 4 or more) reference points is described. However, when imagining a planar space (the plane is surrounded by multiple (for example, 4 or 5 or more) reference points, and the reference points surrounding the space are set as the reference points with the shortest distance and the quasi-shortest distance), this embodiment can also be applied. In addition, when considering the shape of the earth and latitude, longitude, and altitude, Fig.49 the auxiliary line of the dotted line shown in the figure may not be a straight line. Even in this case, this embodiment can be applied.

[0564] Fig.53 is a diagram illustrating an example of the definition of the radial straight line (thick dotted line) and the reference point (black square) in a three-dimensional space. Fig.53 The origin shown in the figure corresponds to the position of the base station device 30 or the transmission point (antenna point) of the base station device 30, for example. As Fig.53As shown in the figure, in the case of Euclidean space, the radial line and the reference point can be defined by x, y, and z coordinates. Alternatively, the radial line and the reference point can be defined by the distance (R in the figure), the angle on the horizontal plane (θ in the figure), and the angle on the vertical plane (φ in the figure). Incidentally, in the example of Fig.53 , Euclidean space (plane) is assumed in the definition. However, in terms of position information, various representational differences such as latitude, longitude, and altitude can occur in addition to Euclidean space. Regarding the conversion of the representation of this position information, for example, after obtaining the distance between two points represented as latitude and longitude by the Vincenty formula or the like (e.g., the position of the air communication device 10A and the position of the reference point, and the positions of two different communication devices), conversion to the desired representation form of the position information can be performed.

[0565] In the present embodiment, it is preferable to set the arrangement of the reference points for each communication device of the secondary system such as the terminal device 20 and the base station device 30. Fig.54 and 55 are diagrams illustrating examples of the arrangement of the reference points. Fig.54 Illustrates an example of arranging the reference points in a grid pattern for each of the terminal device 20 and the base station device 30. In addition, Fig.55 Illustrates an example of arranging the reference points radially for each of the terminal device 20 and the base station device 30. In Fig.54 the example of Fig.55 and the example of

[0566] For each communication device of the secondary system such as the terminal device 20 and the base station device 30, the arrangement interval of the reference points can be different. For example, the arrangement interval can be changed according to the transmission power or the maximum transmission power capacity of the communication devices of the secondary system such as the terminal device 20 and the base station device 30. In the case where the transmission power and the maximum transmission power are as large as those of the base station, it can be expected that the influence of the interference amount applied is large, so it is preferable to make the arrangement interval of the reference points short. In addition, for example, in the case where the required accuracy of the position information of the communication devices of the secondary system is specified in advance by law or the like, the travel distance required for the re-registration process to the communication control device 40, etc., these values can be used to determine the arrangement interval of the reference points. In addition, in the case where the transmission power and the maximum transmission power are as small as those of the terminal device 20, the arrangement interval of the reference points can be wide. Here, in the case of arranging the reference points radially, the following settings can be exemplified as a method of making the arrangement interval of the reference points short (wide).

[0567] 1) Increase (decrease) the number of radial lines

[0568] 2) Increase (decrease) the number of reference points for each radial line

[0569] 3) Make the interval between reference points of each radial line short (wide)

[0570] In this embodiment, in the case of radially arranging reference points, in the calculation of the amount of interference applied from the communication device of the secondary system to the reference points, the calculation amount can be reduced and the calculation can be simplified. Fig.56 is a diagram illustrating an example of the arrangement of reference points. As Fig.56 shown in the diagram, for reference points arranged in the same radial shape, for example, 3 reference points G p it is possible to make some of the communication parameters of the secondary system and the primary system for interference calculation general. That is, the same radial line serves as a geographical constraint, so that the advantage of generalizing the communication parameters can be obtained.

[0571] Fig.57 is a diagram illustrating an example of the generalization of communication parameters. In Fig.57 it, the antenna directivity gain of a communication device of a secondary system such as the base station device 30 is generalized. The antenna directivity gain is determined by directions (horizontal plane angle, vertical plane angle, etc.), so that for reference points G p1 on the same radial line, p2 G p3 and G, the same gain value can be assumed.

[0572] Regarding the generalization of communication parameters in the calculation of the applied interference amount, it is preferable to generalize the communication parameters on the communication device side of a secondary system such as the base station device 30, including the above antenna directivity gain. In addition to the antenna directivity gain of the communication device of the secondary system, examples include the position (latitude, longitude, altitude, etc.) of the communication device of the secondary system, the transmission power of the communication device of the secondary system, etc. In this embodiment, by generalizing at least a part of the communication parameters in the same radial shape, the calculation of the applied interference amount can be simplified.

[0573] Conversely, it is difficult to generalize communication parameters. Examples include the antenna directivity gain of the communication device 10 in the primary system, the position of the communication device 10 in the primary system (latitude, longitude, altitude, etc.), the path loss model and path loss variable factors (shadowing, log-normal fading, slow fading, fast fading, multipath fading, etc.) between the communication device 10 in the primary system and secondary system communication devices such as the terminal device 20 and the base station device 30, the noise power of the primary system, the allowable interference amount of the primary system communication device, the allowable SINR, the allowable SIR, the allowable INR, etc. For these communication parameters, even for reference points with the same radiation pattern, it is advisable to use values for each reference point rather than generalizing the communication parameters. However, in the case where a communication device in a certain secondary system is mapped to multiple reference points, the communication parameters can be generalized for the reference points to which the target secondary system communication device is mapped. In addition, in the case where parameters (such as fading margin) for compensating these fluctuations are set, the parameters can be regarded as common communication parameters.

[0574] Regarding the path loss assumed when calculating the interference amount applied, in some cases, the communication parameters can be partially generalized. Fig.58 It is a diagram illustrating an example of partially generalizing the parameters during path loss calculation. For example, as Fig.58 shown in the diagram, assume a model as shown in the following formula, and define the path loss L (true value or linear value, L ≤ 1) for the distance d.

[0575] L = L F d -α

[0576] Here, L F indicates a predetermined value determined by the surrounding environment, frequency, etc. In addition, α indicates an attenuation coefficient determined by the surrounding environment, frequency, etc. Here, assume that the distances between different reference points (referred to as a and b) on the same radial line and the radial center are d a and d b , and the path loss of each reference point is calculated using the following formulas (9) and (10).

[0577]

[0578]

[0579] When the distances d a and d b between these reference points and the center can be referenced by a certain distance d0, using the ratio of the reference distances (β corresponds to this ratio), for example, d a = β a * d0 and d b = βb When represented by *d0, the above path loss can be expressed by the following formulas (11) to (13).

[0580]

[0581]

[0582]

[0583] In the above formula, L common is the common path loss component on the same radial straight line, which can be calculated in advance for the surrounding environment, frequency, and reference distance. In addition, since β can also be determined in advance according to the layout rule of the reference points on the radial straight line, β －α can also be calculated in advance.

[0584] In this embodiment, by arranging reference points for each communication device of the secondary system, the calculation of the interference amount applied is simplified. On the other hand, in this embodiment, reference points can also be arranged for each communication device 10 of the primary system. In this case, the communication devices of the secondary system are mapped to the reference points, rather than mapping the communication device 10 of the primary system to the reference points as described above. In addition, when the reference points are arranged radially, its center is the communication device 10 of the primary system.

[0585] By generalizing the arrangement of reference points among multiple communication devices (and communication devices of the primary system) of the secondary system, the calculation of the interference amount applied can be simplified. Fig.59 is a diagram illustrating an example of generalizing the arrangement of reference points among multiple communication devices of the secondary system. Fig.59 Illustrates an example of generalizing the arrangement of reference points among communication devices of the secondary system such as base station device 301 and base station device 302. In the case of generalizing the arrangement of reference points, in addition to mapping the air communication devices 10A1 to 10A3 to the reference points, base station device 301 and base station device 302 are also mapped to the reference point positions instead of the actual positions. As for the mapping method, similar to the communication device 10 of the primary system, it is preferable to map to one or more reference points including the shortest distance or quasi-shortest distance.

[0586] After the reference point mapping is completed, the interference is calculated based on the positions of the communication devices of the secondary system and the positions of the reference points to which the communication devices of the primary system are mapped. Alternatively, the positions of the communication devices of the primary system and the positions of the reference points to which the communication devices of the secondary system are mapped can be used. However, the following will be described based on the former.

[0587] In the calculation of the above formula (5), in this embodiment, the position of the target communication device of the primary system is not the actual position (xp , y p , z p ), but the position of the reference point (x p,RP,n , y p,RP,n , z p,RP,n ), where n is the reference point number in the case of mapping to multiple reference points.

[0588] In the case of radially arranging the reference points, the values of the communication parameters can be generalized as described in Fig.56 and 57 . In the case of generalizing the antenna directivity gain of the communication device of the secondary system, for the same radial reference point, the value of As(x p,RP,n , y p,RP,n , z p,RP,n , x S , y S , z S ) in the above formula (5) is the same. This means that when the antenna characteristics of the communication device of the secondary system are known in advance (for example, obtained as the capability information of the communication device of the secondary system, the antenna characteristics can be known in advance), and the arrangement of the radial lines (horizontal plane angle and vertical plane angle) is determined by a predetermined rule, the calculation can be performed in advance (offline) without considering the execution timing of the calculation of the interference amount applied. For example, assume that the number of radial lines is N rad , and it is sufficient to calculate the N rad antenna directivity gains of the communication device of the secondary system.

[0589] The (partial) generalization of the communication parameters in this embodiment can also be applied to the calculation of path loss as described in reference Fig.58 . Through this (partial) generalization, the path loss factor depending on the distance can be calculated in advance offline. In particular, here, the reference distance can be set as the distance of the reference point on the target radial line where the distance from the center is the shortest.

[0590] Fig.60 An example of the calculation process of the interference amount applied considering the above offline calculation and pre-calculation is illustrated. Fig.60 is a diagram illustrating an example of the calculation process of the interference amount applied considering the offline calculation and pre-calculation. Here, as an example, the operating entity of the process is described as the communication control device 40.

[0591] As Fig.60As shown in the figure, first, the calculation unit 442 of the communication control device 40 sets the arrangement of reference points (grid pattern, radial pattern, etc.) (step S1401). Next, the calculation unit 442 of the communication control device 40 determines whether the information and parameter values required for offline calculation and pre-calculation are sufficient (step S1402). Such information can be obtained, for example, from the capability information of the secondary system communication device and the capability information of the primary system communication device.

[0592] At this time, when the information and parameter values required for offline calculation and pre-calculation are insufficient (step S1402: No), the calculation unit 442 of the communication control device 40 sends a request for notifying the required information to the communication device of the secondary system or the communication device of the primary system (step S1403). Subsequently, when the information and parameter values required for offline calculation and pre-calculation are collected and the timing for performing offline calculation and pre-calculation arrives (step S1404), the calculation unit 442 of the communication control device 40 performs offline calculation and pre-calculation of the antenna directivity gain, distance-related elements of path loss, etc. as described above (step S1405). These calculation results can be stored, for example, in the form of a look-up table (LUT) or in a database format such as SQL.

[0593] Next, when the timing for calculating the amount of interference applied to the communication device of the primary system (and the reference point to which the communication device of the primary system is mapped) arrives (step S1407: Yes), the calculation unit 442 of the communication control device 40 performs the calculation of the amount of interference applied. Here, when there are the results of offline calculation and pre-calculation (step S1408: Yes), the calculation unit 442 of the communication control device 40 performs the calculation of the amount of interference applied by using the calculation results (step S1409). On the other hand, when there are no results of offline calculation and pre-calculation (step S1408: No), the calculation unit 442 of the communication control device 40 individually performs the calculation of the amount of interference applied for each primary system communication device or reference point (step S410).

[0594] In addition, when it is necessary to calculate the cumulative amount of interference applied (step S1411: Yes), the calculation unit 441 of the communication control device 40 calculates the cumulative amount of interference applied from the secondary system communication device (step S1412). Examples of the necessary conditions for calculating the cumulative amount of interference applied include the presence, operation, and communication requests of multiple secondary systems or multiple communication devices of the secondary system.

[0595] After the calculation of the interference amount to be applied or the cumulative interference is completed, the determination unit 443 of the communication control device 40 calculates the communication parameters (e.g., transmission power, allowable transmission power, maximum transmission power, used frequency channel, and directivity pattern) of the communication devices of the secondary system based on the calculation result (step S1413). Subsequently, the notification unit 445 of the communication control device 40 notifies the communication devices of the target secondary system, such as the base station device 30, of the calculation result (step S1414).

[0596] After calculating the cumulative interference amount described above, the determination unit 443 of the communication control device 40 calculates the communication parameters of the communication devices of the secondary system, such as the terminal device 20 and the base station device 30, so that the interference amount satisfies a predetermined standard. For example, as an example of the standard, as shown in the following formula (14), for all communication devices 10 of the target primary system, the communication parameters are calculated so that the cumulative interference amount is equal to or less than a predetermined interference amount threshold I th,p .

[0597]

[0598] Examples of the communication parameters include the transmission power P of the communication devices of the secondary system Tx,s and the maximum transmission power P Tx,Max,s , or transmission power-related parameters equivalent thereto.

[0599] <6-5. Notification and Setting of Communication Parameters>

[0600] In the present embodiment, as described above, after obtaining the communication parameters to be used by the communication devices of the secondary system, the notification unit 445 of the communication control device 40 actually notifies them to the communication devices of the secondary system. On the other hand, the setting unit 244 of the terminal device 20 and the setting unit 344 of the base station device 30 set the notified communication parameters in the storage unit 22 or the storage unit 32.

[0601] Fig.61 is a diagram illustrating an example of the signaling process. Fig.61 An example of the case where the communication control device 40 performs the selection of the protection target and the interference calculation of the air communication device 10A is illustrated. In addition, in Fig.61 's example, it is assumed that the terminal device 20 is connected to the base station device 30 through random access or handover.

[0602] As Fig.61 illustrated in the diagram, the terminal device 20 notifies the connected destination base station device of the information about the capabilities of the terminal device 20 itself (step S1501). In response to this, the base station device 30 acquires the information about the capabilities notified in step S1501 from the terminal device 20 (step S1502).

[0603] Examples of the information on capabilities here include the frequency bands that the terminal can use, frequency channel numbers, carrier aggregation capabilities, dual-connection (multi-connection) capabilities, and the number of MIMO antennas (including the number of antenna panels). In addition, examples of the information on capabilities include the terminal category, buffer size, maximum transmission power, minimum transmission power, QoS class (quality of service class), location information (latitude, longitude, altitude, etc.) of the terminal device 20, and the mobility of the terminal device.

[0604] The notification from the terminal device 20 to the base station device 30 can be performed, for example, using a part of radio resource control (RRC) signaling or uplink control information (UCI). In addition, the notification can be performed using an uplink physical channel (physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH), or physical random access channel (PRACH)).

[0605] The base station device 30 notifies the communication control device 40 of the information on the capabilities of the subordinate terminal devices and the base station device itself (step S1503). On the other hand, the communication control device 40 acquires the information on capabilities from the base station device 30 (step S1504).

[0606] In addition to the same information as that of the terminal, examples of the information on the capabilities of the base station device further include the number of terminal devices that can be connected, the number of currently connected terminal devices, and the maximum number of frequency channels or cells that can be provided to the terminal devices. In addition, examples of the information on the capabilities of the base station device include the QoS class that can be provided to the terminal device 20, the location information (latitude, longitude, altitude, etc.) of the base station device, and the mobility (fixed, portability, speed, etc.) of the base station device 30.

[0607] The base station device 30 notifies the communication control device 40 of a request for spectrum sharing (step S1505). On the other hand, the communication control device 40 acquires the request from the base station device 30 (step S1506). Here, examples of the request include the number of required frequency channels (including the frequency channels targeted for sharing with the primary system spectrum), frequency channel numbers, the total sum of frequency bandwidths, and the required transmission power.

[0608] The communication control device 40 acquires information on the communication device 10 of the primary system (step S1507). Examples of such acquisition sources include databases prepared by countries / regions, government departments, government agencies, and equivalent organizations. In addition, for example, when the information on the communication device 10 of the primary system is pre-specified by laws or the like, the pre-recorded information can be extracted. Examples of such information on the communication device 10 of the primary system include the location information (latitude, longitude, altitude, ground / air, etc.) of the communication device, the mobility and flight (movement) path of the communication device, the service area of the primary system (latitude, longitude, altitude, etc. of the service area), the allowable interference amount of the communication device, the allowable signal-to-interference ratio (SIR), the allowable signal-to-interference-plus-noise ratio (SINR), the allowable carrier-to-noise ratio (CIR), the allowable carrier-to-interference-plus-noise ratio (CINR), and the allowable interference-to-noise ratio (INR).

[0609] The selection unit 441 of the communication control device 40 sets the interference protection target space of the primary system according to the above criteria or the like (step S1508). Here, by using information such as the location information and mobility of the communication device 10 of the primary system and the communication device of the secondary system, and the requested frequency channel, the surrounding environment and terrain are determined, and the interference protection target space is set.

[0610] The selection unit 441 of the communication control device 40 selects the protected object communication device 10 of the primary system by using the interference protection target space set in step S1508 and the acquired information such as the location, mobility, and path of the communication device 10 of the primary system (step S1509).

[0611] The selection unit 441 of the communication control device 40 calculates (estimates) the amount of interference exerted from the communication device of the secondary system to the protected object communication device 10 of the primary system selected in step S1509 (step S1510).

[0612] The determination unit 443 of the communication control device 40 determines the communication parameters to be used by the communication device of the secondary system of the present invention described above based on the calculation (estimation) result of the interference amount exerted (step S1511). Then, the notification unit 445 of the communication control device 40 notifies the communication parameters to the base station device 30 (step S1512). If the request for spectrum sharing includes desired communication parameters, then the result of the comparison with the "communication parameters to be used by the communication device" determined can be notified to the communication device of the secondary system.

[0613] The base station device 30 obtains communication parameters to be used by the base station device 30 from the communication control device 40 (step S1513). In this way, in the case where the secondary system is a cellular system, at least one of the base station device and the terminal device obtains communication parameters from the communication management device. Here, from the perspective of simplifying signaling, an example in which the base station device 30 obtains communication parameters is given. However, the terminal device 20 may obtain communication parameters. In addition, in the case where the secondary system is a wireless LAN, at least one of the access point (AP) device and the station (STA) device obtains communication parameters from the communication control device 40. Similar to the case of the cellular system, it is preferable that the AP device obtains communication parameters.

[0614] The setting unit 344 of the base station device 30 sets the communication parameters of the device itself based on the communication parameters obtained through the notification (step S1514).

[0615] The notification unit 345 of the base station device 30 notifies the subordinate terminal device (STA device) 20 of the communication parameters (step S1515). The terminal device 20 obtains the communication parameters notified from the base station device 30 (step S1516).

[0616] Here, the base station device 30 may notify and specify the communication parameters obtained from the communication control device 40 as they are, or may send a notification with changes for the terminal device 20. For example, in the case of obtaining the value of the maximum transmission power from the communication control device 40, the base station device 30 may notify a value smaller than the notified maximum transmission power value as the maximum transmission power of the terminal device 20 within the range not exceeding the notified maximum transmission power value. Alternatively, the transmission power of the terminal device 20 may be controlled so as not to exceed the notified maximum transmission power.

[0617] The notification from the base station device 30 to the terminal device 20 can be performed by using at least a part of the RRC signaling, the system information (SI), and the downlink control information (DCI). In addition, the notification can be performed by using at least a part of the downlink physical channels (physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH), and physical broadcast channel (PBCH)). In addition, the notification can be performed as signaling of the upper layer. In addition, for such a notification, at least one frequency channel among the frequency channels for spectrum sharing and the frequency channels not for spectrum sharing is used.

[0618] The setting unit 244 of the terminal device 20 sets the communication parameters of the device itself based on the communication parameters obtained through the notification (step S1517). Subsequently, communication is performed with other communication devices of the secondary system (in the case of uplink communication, the base station device 30 is the communication partner, and in the case of downlink communication, the terminal device 20 is the communication partner). For example, the radio communication control unit 346 of the base station device 30 controls the radio communication unit 31 to communicate with the terminal device 20, and the radio communication control unit 246 of the terminal device 20 controls the radio communication unit 21 to communicate with the base station device 30 (steps S1518 and step S1519). This communication is performed by using a frequency channel targeted for spectrum sharing.

[0619] Fig.62 is a diagram illustrating an example of a signaling process. Fig.62 Illustrate an example in which the protection object selection and interference calculation are performed by the communication devices of the secondary system. For example, in the case of being performed by the communication devices of the secondary system, from the perspective of computing power or the notification and setting of communication parameters after the calculation, it is preferable that the communication device is a base station device or an access point device. Here, as an example, an example in which the base station device 30 also serves as the communication control device 40 is given. Incidentally, information about the capabilities of the terminal device 20 is used by the base station device 30 itself. Information about the communication devices of the primary system is obtained from a database prepared by a country / region, government department, government agency, and equivalent organizations, or from the communication control device 40 or the like.

[0620] As Fig.62 As illustrated in the figure, the terminal device 20 notifies the connected destination base station device of information about the capabilities of the terminal device 20 itself (step S1601). In response to this, the base station device 30 obtains the information about the capabilities notified in step S1601 from the terminal device 20 (step S1602).

[0621] The base station device 30 obtains information about the communication device 10 of the primary system (step S1603). Examples of the source of this acquisition include a database prepared by a country / region, government department, government agency, and equivalent organizations. In addition, for example, when the information about the communication device 10 of the primary system is specified in advance by law or the like, the pre-recorded information can be extracted.

[0622] The selection unit 341 of the base station device 30 sets the interference protection object space of the primary system according to the above criteria and the like (step S1604). The selection unit 341 of the base station device 30 selects the protected object communication device 10 of the primary system by using the interference protection object space set in step S1604 and the obtained information, such as the position, mobility, and path of the communication device 10 of the primary system (step S1605).

[0623] The calculation unit 342 of the base station device 30 calculates (estimates) the amount of interference applied from the communication device of the secondary system to the protected object communication device of the primary system selected in step S1605 (step S1606).

[0624] Based on the calculation (estimation) result of the applied interference amount, the determination unit 343 of the base station device 30 determines the communication parameters to be used by the communication device of the secondary system as described above (step S1607). Then, the setting unit 344 of the base station device 30 sets its own communication parameters based on the communication parameters obtained through notification (step S1608).

[0625] Subsequently, the notification unit 345 of the base station device 30 notifies the subordinate terminal device (STA device) 20 of the communication parameters (step S1609). The terminal device 20 obtains the communication parameters notified from the base station device 30 (step S1610).

[0626] The setting unit 244 of the terminal device 20 sets its own communication parameters based on the communication parameters obtained through notification (step S1611). Subsequently, communication is performed with other communication devices of the secondary system (in the case of uplink communication, the base station device 30 is the communication partner, and in the case of downlink communication, the terminal device 20 is the communication partner). For example, the wireless communication control unit 346 of the base station device 30 controls the wireless communication unit 31 to communicate with the terminal device 20, and the wireless communication control unit 246 of the terminal device 20 controls the wireless communication unit 21 to communicate with the base station device 30 (step S1612 and step S1613). This communication is performed by using a frequency channel targeted for spectrum sharing.

[0627] Fig.63 is a diagram illustrating an example of a signaling process. Fig.63 Illustrates an example in which the selection of the protected object and the interference calculation of the present invention are performed by different devices. As an example of different devices, the communication control device 40 performs the selection of the protected object, while the base station device 30 performs the interference calculation (and the calculation of the communication parameters of the communication device of the secondary system). The execution devices can have the opposite relationship.

[0628] In Fig.63 In the case of the example, the notification unit 445 of the communication control device 40 notifies the base station device of the secondary system of the information regarding the result of performing the selection of the protected object (step S1701). The process up to step S1701 is the same as the sequence illustrated in Fig.61 the figure.

[0629] The base station device 30 obtains information on the result of the protected object selection from the communication control device 40 (step S1702). Examples of information on the result of the protected object selection include the location information (latitude, longitude, altitude, ground / air, etc.) of the communication device, the mobility and flight (movement) path of the communication device, the service area of the primary system (latitude, longitude, altitude, etc. of the service area), the allowable interference amount of the communication device, the allowable signal-to-interference ratio (SIR), the allowable signal-to-interference-plus-noise ratio (SINR), and the allowable interference-to-noise ratio (INR). The subsequent processing is the same as that Fig.62 shown in the sequence illustrated in the figure.

[0630] Fig.64 is a diagram illustrating an example of the signaling process. Fig.64 The figure illustrates an example of the signaling process in the case of communication as a secondary system, assuming device-to-device communication, device-to-device (D2D), and vehicle-to-everything (V2X). In addition, in Fig.64 in order to avoid duplication with the above description, an example is given from the perspective of the communication control device 40 calculating the calculation parameters of the communication device of the secondary system.

[0631] As Fig.64 shown in the figure, the determination unit 443 of the communication control device 40 determines the communication parameters of the communication device of the secondary system (step S1802). After that, the notification unit 445 of the communication control device 40 notifies the base station device 30 of the communication parameters (step S1802).

[0632] The base station device 30 obtains the communication parameters to be used by the base station device 30 from the communication control device 40 (step S1803). The setting unit 344 of the base station device 30 sets the communication parameters of its own device based on the communication parameters obtained through the notification (step S1804).

[0633] The notification unit 345 of the base station device 30 notifies the subordinate terminal devices 201 and 202 of the communication parameters (step S1805A and step S1805B).

[0634] Device-to-device communication, D2D, and V2X can be performed by using physical sidelink channels (physical sidelink control channel (PSCCH), physical sidelink shared channel (PSSCH), and physical sidelink broadcast channel (PSBCH)).

[0635] When the object frequency channel for spectrum sharing is used for the sidelink, communication parameters can be notified, obtained, and set in a form associated with the sidelink resource pool in the object frequency channel. The resource pool is a sidelink radio resource set by specific frequency resources (e.g., resource blocks and component carriers) and time resources (e.g., radio frames, subframes, time slots, and mini-slots). When setting a resource pool within a frequency channel targeted for spectrum sharing, it is set using at least one of RRC signaling, system information, or downlink control information from the base station device to the terminal device. Subsequently, the communication parameters to be applied in the resource pool and the sidelink are also set using at least one of RRC signaling, system information, or downlink control information from the base station device to the terminal device. The notification of the resource pool setting and the notification of the communication parameters to be used in the sidelink can be simultaneous or separate.

[0636] The terminal devices 201 and 202 obtain the communication parameters notified from the base station device 30 (step S1806A and step S1806B).

[0637] The setting units 244 of the terminal devices 201 and 202 set the communication parameters of their own devices based on the communication parameters obtained through the notification (step S1807A and step S1807B). Then, the wireless communication control units 246 of the terminal devices 201 and 202 control the wireless communication units to communicate with other terminal devices 20 (step S1808A and step S1808B). This communication is performed by using the frequency channel targeted for spectrum sharing.

[0638] Incidentally, in the case of communicating by using a frequency channel targeted for spectrum sharing and a frequency channel not targeted for spectrum sharing (e.g., carrier aggregation, dual connectivity, multi-connectivity, and channel bonding), at least some of the communication parameters used in each frequency channel can be different from each other. For example, for a frequency channel targeted for spectrum sharing and a frequency channel not targeted for spectrum sharing, the maximum transmission power and the value of the transmission power can be set to different values.

[0639] Fig.65 It is a diagram illustrating an example of the application process of communication parameters. Fig.65 It illustrates an example of a frequency channel targeted for spectrum sharing or a frequency channel not targeted for spectrum sharing. For example, in terms of the maximum transmission power and the transmission power, it is preferable that the value used in the frequency channel targeted for spectrum sharing is smaller than the value used in the frequency channel not targeted for spectrum sharing. In addition, the maximum transmission power and the transmission power used in the frequency channel targeted for spectrum sharing can be notified, obtained, and set in the form of a difference from the maximum transmission power and the transmission power used in the frequency channel not targeted for spectrum sharing.

[0640] Here, as an example, the operation subject of the process is described as the terminal device 20. As Fig.65 shown in the diagram, the setting unit 244 of the terminal device 20 acquires a notification of communication parameters from the base station device 30 (step S1901).

[0641] Here, in the case of using a frequency channel targeted for spectrum sharing (step S1902: Yes), the setting unit 244 of the terminal device 20 determines whether to use the frequency channel targeted for spectrum sharing as a sidelink (step S1903). Incidentally, in the case of not using a frequency channel targeted for spectrum sharing (step S1902: No), the process jumps to the process of step S1906.

[0642] At this time, in the case of using the frequency channel targeted for spectrum sharing as a sidelink (step S1903: Yes), the setting unit 244 of the terminal device 20 applies the sidelink communication parameters calculated, notified, and set in consideration of information on the primary system in the communication using this frequency channel (step S1904). Incidentally, in the case of not using the frequency channel targeted for spectrum sharing as a sidelink (step S1903: No), the process jumps to the process of step S1905.

[0643] After that, the setting unit 244 of the terminal device 20 applies the uplink and downlink communication parameters calculated, notified, and set in consideration of information on the primary system in the communication using this frequency channel (step S1905).

[0644] In the case of using a frequency channel not targeted for spectrum sharing (step S1906: Yes), the setting unit 244 of the terminal device 20 applies the communication parameters calculated, notified, and set without considering information on the primary system in the communication using this frequency channel (step S1907). Incidentally, in the case of not using a frequency channel not targeted for spectrum sharing (step S1906: No), the process of step S1907 is skipped.

[0645] 《7. Variation Examples》

[0646] The above embodiments describe various examples, and various modifications and applications are possible.

[0647] <7-1. Variation Examples Regarding System Configuration>

[0648] The communication control device 40 of this embodiment is not limited to the device described in the above embodiment. For example, the communication control device 40 may be a device having functions other than controlling the base station device 30 that reuses the frequency band in which spectrum sharing is performed. For example, a network manager may include the functions of the communication control device 40 of this embodiment. At this time, the network manager may be, for example, a centralized baseband unit (C-BBU) having a network configuration 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 network managers) may also be regarded as communication control devices.

[0649] Incidentally, in the above embodiment, the communication system 1 is the first wireless system, and the base station device 30 is the second wireless system. However, the first wireless system and the second wireless system are not limited to this example. For example, the first wireless system may be a communication device (e.g., the wireless communication device 10), and the second wireless system may be a communication system (communication system 2). Incidentally, the wireless system appearing in this embodiment is not limited to a system composed of multiple devices, and may be appropriately replaced with "device", "terminal", etc.

[0650] In the above embodiment, the communication control device 40 is assumed to be a device belonging to the communication system 2, but it does not necessarily have to be a device belonging to the communication system 2. The communication control device 40 may be an external device of the communication system 2. The communication control device 40 may indirectly control the base station device 30 via the devices constituting the communication system 2 instead of directly controlling the base station device 30. In addition, there may be multiple secondary systems (communication system 2). At this time, the communication control device 40 may manage multiple secondary systems. In this case, each secondary system may be regarded as the second wireless system.

[0651] Incidentally, generally, in spectrum sharing, the existing system using the target frequency band is called the primary system, and the secondary user is called the secondary system. However, the primary system and the secondary system may be replaced with other terms. The macro cell in a heterogeneous network (HetNET) may be the primary system, and the small cell or relay station may be the secondary system. In addition, the base station may be the primary system, and the relay UE or vehicle UE that implements D2D or vehicle-to-everything (V2X) within its coverage area may be the secondary system. The base station is not limited to a fixed base station and may be a portable / mobile base station.

[0652] The interface between entities can be a wired interface or a wireless interface. For example, the interfaces between the entities (communication devices, communication control devices, or terminal devices) that appear in this embodiment can be wireless interfaces that do not depend on spectrum sharing. Examples of wireless interfaces that do not depend on spectrum sharing include wireless interfaces provided by mobile network operators via licensed frequency bands, and wireless LAN communications using existing unlicensed frequency bands.

[0653] <7-2. Other Variants>

[0654] The control device for controlling the wireless communication device 10, terminal device 20, base station device 30, communication control device 40, or proxy device 50 of this embodiment can be implemented by a dedicated computer system or can be implemented by a general-purpose computer system.

[0655] The program for performing the above operations is stored in a computer-readable recording medium such as an optical disc, semiconductor memory, magnetic tape, and floppy disk and distributed. Then, for example, by installing the program in a computer and executing the above processing, the control device is constituted. At this time, the control device can be an external device (e.g., a personal computer) of the wireless communication device 10, terminal device 20, base station device 30, communication control device 40, or proxy device 50. The control device can 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, terminal device 20, base station device 30, communication control device 40, or proxy device 50.

[0656] The communication program can be stored in a disk device included in a server device on a network such as the Internet for downloading to a computer or the like. In addition, the above functions can be realized by the cooperation between an operating system (OS) and application software. In this case, the part other than the OS can be stored in a medium and distributed, or the part other than the OS can be stored in a server device for downloading to a computer or the like.

[0657] Among the processes described in the above embodiments, all or part of the processes described as being performed automatically can be performed manually, or all or part of the processes described as being performed manually can be performed automatically by known methods. In addition, unless otherwise specified, the processing procedures, specific names, and information including various data and parameters described in the above specification and drawings can be arbitrarily changed. For example, the various information illustrated in each drawing is not limited to the information illustrated.

[0658] Each component of each device shown in the drawings is a functional concept and does not necessarily have to be physically configured as shown. That is, the specific form of the distribution and integration of each device is not limited to the form shown in the drawings, and all or part of the device can be configured to be functionally or physically distributed and integrated in any unit according to various loads, usage conditions, etc.

[0659] In areas where the processed content is not mutually contradictory, the above embodiments can be appropriately combined. In addition, the order of each step shown in the sequence diagram or flowchart of this embodiment can be changed as appropriate.

[0660] 《8. Conclusion》

[0661] As described above, according to an embodiment of the present disclosure, the communication control device 40 selects which air communication device of the primary system must be considered as the protection target against interference from the communication device of the secondary system.

[0662] In the air communication device of the primary system selected in this way, the interference from the communication device of the secondary system to the air communication device of the primary system is controlled at a predetermined level or lower.

[0663] As a result, compared with the above Patent Document 1, the opportunity to achieve spectrum sharing between the secondary system and the primary system is improved, so that the hindrance to the improvement of the utilization efficiency of limited frequency resources can be suppressed. As a result, effective use of radio resources is achieved.

[0664] Although the 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 changes can be made without departing from the gist of the present disclosure. In addition, the components in different embodiments and modified examples can be appropriately combined.

[0665] The effects in each of the embodiments described in this specification are only examples and are not limited, and there may be other effects.

[0666] Incidentally, this technology can also be configured as follows.

[0667] (1) A communication control device includes: a selection unit that selects, based on a protection target range, a communication device of a first wireless system that is an object for calculating interference imposed by a communication device of a second wireless system, where the second wireless system secondarily uses frequency resources that are primarily used by the first wireless system, and the protection target range is set above the communication device of the second wireless system based on the position of the communication device of the second wireless system.

[0668] (2) The communication control device according to (1), wherein

[0669] The selection unit sets the boundary of the protected object range based on the elevation angle, and the elevation angle is based on the position of the communication device of the second wireless system.

[0670] (3) The communication control device according to (2), wherein

[0671] The selection unit sets the protected object range based on the surrounding environment of the communication device of the second wireless system.

[0672] (4) The communication control device according to (2), wherein

[0673] The selection unit sets the protected object range based on the frequency resources reused by the second wireless system.

[0674] (5) The communication control device according to (2), wherein

[0675] The selection unit sets the elevation angle within a predetermined upper limit value or within a range not deviating from a predetermined lower limit value.

[0676] (6) The communication control device according to (2), wherein

[0677] The selection unit sets the protected object range based on the position, moving speed, or flight path of the communication device of the first wireless system.

[0678] (7) The communication control device according to (6), wherein

[0679] The flight path includes time-series data on the coordinates of the communication device of the first wireless system, and

[0680] The selection unit sets the start point and end point of the time-series data of the coordinates to be compared with the protected object range based on the time interval for calculating interference.

[0681] (8) The communication control device according to (1), further comprising:

[0682] A calculation unit that calculates the amount of interference or the cumulative amount of interference applied by the communication device of the second wireless system to the communication device of the first wireless system.

[0683] (9) The communication control device according to (8), wherein

[0684] The calculation unit calculates the amount of interference using different calculation methods according to whether the communication device of the first wireless system is included in the protected object range.

[0685] (10) The communication control device according to (9), wherein

[0686] The parameter for calculating the interference amount for the communication device of the first wireless system included in the scope of the protected object is more than the parameter for calculating the interference amount for the communication device of the first wireless system not included in the scope of the protected object.

[0687] (11) The communication control device according to (10), wherein

[0688] The calculation unit calculates the interference amount for the communication device of the first wireless system included in the scope of the protected object by using the radio wave propagation characteristics or antenna characteristics between the communication device of the first wireless system and the communication device of the second wireless system, and does not use the radio wave propagation characteristics or antenna characteristics between the communication device of the first wireless system and the communication device of the second wireless system to calculate the interference amount for the communication device of the first wireless system not included in the scope of the protected object.

[0689] (12) The communication control device according to (8), further comprising:

[0690] A determination unit that determines the communication parameter of the communication device of the second wireless system based on the interference amount or cumulative interference amount calculated by the calculation unit.

[0691] (13) The communication control device according to (8), wherein

[0692] The calculation unit sets a reference point for calculating the interference applied to the communication device of the first wireless system for each communication device of the second wireless system, and calculates the interference amount applied to the communication device of the first wireless system.

[0693] (14) The communication control device according to (13), wherein

[0694] The reference point is arranged on a straight line starting from the communication device of the second wireless system.

[0695] (15) The communication control device according to (13), wherein

[0696] The reference points are arranged at equal intervals on a straight line starting from the communication device of the second wireless system.

[0697] (16) The communication control device according to (13), wherein

[0698] The reference points are arranged at different intervals on a straight line starting from the communication device of the second wireless system.

[0699] (17) The communication control device according to (13), wherein

[0700] The reference point having the shortest distance to the communication device of the second wireless system varies according to a straight line.

[0701] (18) The communication control device according to (12) further includes:

[0702] A notification unit that notifies other communication devices of the second wireless system of the communication parameters determined by the determination unit.

[0703] (19) A communication device includes: a selection unit that selects, based on a protection object range, a communication device of a first wireless system as an object for calculating interference imposed by a communication device of a second wireless system, where the second wireless system re-uses frequency resources once used by the first wireless system, and the protection object range is set over the communication device of the second wireless system based on the position of the second wireless system.

[0704] (20) The communication device according to (19), wherein

[0705] The selection unit sets a boundary of the protection object range based on an elevation angle, and the elevation angle is based on the position of the communication device of the second wireless system.

[0706] (21) The communication device according to (19) further includes:

[0707] A calculation unit that calculates an interference amount or an accumulated interference amount imposed by the communication device of the second wireless system on the communication device of the first wireless system.

[0708] (22) A communication control method for causing a computer to execute: selecting, based on a protection object range, a communication device of a first wireless system as an object for calculating interference imposed by a communication device of a second wireless system, where the second wireless system re-uses frequency resources once used by the first wireless system, and the protection object range is set over the communication device of the second wireless system based on the position of the second wireless system.

[0709] (23) The communication control method according to (22), wherein

[0710] The selection unit sets a boundary of the protection object range based on an elevation angle, and the elevation angle is based on the position of the communication device of the second wireless system.

[0711] (24) The communication control method according to (22), wherein

[0712] A calculation unit is also provided, which calculates the amount of interference or the cumulative amount of interference imposed by the communication device of the second wireless system on the communication device of the first wireless system.

[0713] List of Reference Numerals

[0714] 1, 2 Communication systems

[0715] 10 Communication device

[0716] 20 Terminal device

[0717] 30 Base station device

[0718] 40 Communication control device

[0719] 50 Agent device

[0720] 21, 31, 41, 51 Wireless communication unit

[0721] 22, 32, 42, 52 Storage unit

[0722] 23 Input / output unit

[0723] 33, 43, 53 Network communication unit

[0724] 24, 34, 44, 54 Control unit

[0725] 211, 311 Reception processing unit

[0726] 212, 312 Transmission processing unit

[0727] 241, 341, 441, 541 Selection unit

[0728] 242, 342, 442, 542 Calculation unit

[0729] 243, 343, 443, 543 Determination unit

[0730] 244, 344 Setting unit

[0731] 345, 445, 545 Notification unit

[0732] 246, 346 Wireless communication control unit

Claims

1. A communication control device, comprising: A selection unit that, when an air communication device of a first wireless system is within the protected object range, selects the air communication device of the first wireless system that is the object for calculating the interference imposed by a communication device of a second wireless system. The second wireless system re-uses the frequency resources once used by the first wireless system. The protected object range is set above the communication device of the second wireless system based on the position of the communication device of the second wireless system, and the selection unit sets the boundary of the protected object range based on height, where the height is based on the position of the communication device of the second wireless system. where the protected object range is in a space where the cross-sectional area obtained by truncating at a higher height is larger.

2. The communication control device according to claim 1, wherein the selection unit sets the boundary of the protected object range based on the elevation angle, where the elevation angle is based on the position of the communication device of the second wireless system.

3. The communication control device according to claim 2, wherein the selection unit sets the protected object range based on the surrounding environment of the communication device of the second wireless system.

4. The communication control device according to claim 2, wherein the selection unit sets the protected object range based on the frequency resources re-used by the second wireless system.

5. The communication control device according to claim 2, wherein the selection unit sets the elevation angle within a predetermined upper limit value or within a range not deviating from a predetermined lower limit value.

6. The communication control device according to claim 2, wherein the selection unit sets the protected object range based on the position, moving speed, or flight path of the air communication device of the first wireless system.

7. The communication control device according to claim 6, wherein the flight path includes time-series data regarding the coordinates of the air communication device of the first wireless system, and the selection unit sets the start and end points of the time-series data of the coordinates to be compared with the protected object range based on the time interval for calculating the interference.

8. The communication control device according to claim 1, further comprising: A calculation unit that calculates the amount of interference or the cumulative amount of interference imposed by the communication device of the second wireless system on the air communication device of the first wireless system.

9. The communication control device according to claim 8, wherein the calculation unit calculates the amount of interference using different calculation methods according to whether the air communication device of the first wireless system is included in the protected object range.

10. The communication control device according to claim 9, wherein the parameters for calculating the amount of interference for the air communication device of the first wireless system included in the protected object range are more than the parameters for calculating the amount of interference for the air communication device of the first wireless system not included in the protected object range.

11. The communication control device according to claim 10, wherein The calculation unit calculates the amount of interference on the air communication device of the first wireless system included within the protected object range using the radio wave propagation characteristics or antenna characteristics between the air communication device of the first wireless system and the communication device of the second wireless system, and does not calculate the amount of interference on the air communication device of the first wireless system not included within the protected object range using the radio wave propagation characteristics or antenna characteristics between the air communication device of the first wireless system and the communication device of the second wireless system.

12. The communication control device according to claim 8, further comprising: a determination unit that determines communication parameters of the communication device of the second wireless system based on the amount of interference or cumulative amount of interference calculated by the calculation unit.

13. The communication control device according to claim 8, wherein the calculation unit sets a reference point for calculating the interference applied to the air communication device of the first wireless system for each communication device of the second wireless system, and calculates the amount of interference applied to the air communication device of the first wireless system.

14. The communication control device according to claim 13, wherein the reference point is arranged on a straight line starting from the communication device of the second wireless system.

15. The communication control device according to claim 13, wherein the reference points are arranged at equal intervals on a straight line starting from the communication device of the second wireless system.

16. The communication control device according to claim 13, wherein the reference points are arranged at different intervals on a straight line starting from the communication device of the second wireless system.

17. The communication control device according to claim 13, wherein the reference point having the shortest distance to the communication device of the second wireless system varies according to the straight line.

18. The communication control device according to claim 12, further comprising: a notification unit that notifies other communication devices of the second wireless system of the communication parameters determined by the determination unit.

19. A communication device, comprising: a selection unit that, when the air communication device of the first wireless system is within the protected object range, selects the air communication device of the first wireless system as the object for calculating the interference applied by the communication device of the second wireless system, the second wireless system re-uses the frequency resources once used by the first wireless system, the protected object range is set above the communication device of the second wireless system based on the position of the second wireless system, and the selection unit sets the boundary of the protected object range based on height, the height being based on the position of the communication device of the second wireless system, wherein the protected object range is in a space where the cross-sectional area obtained by truncating at a higher height is larger.

20. A communication control method for causing a computer to execute: when an air communication device of a first wireless system is within a protected object range, selecting, based on the protected object range, the air communication device of the first wireless system that is an object for calculating interference imposed by a communication device of a second wireless system, where the second wireless system re-uses frequency resources once used by the first wireless system, the protected object range is set above the communication device of the second wireless system based on the position of the second wireless system, and setting a boundary of the protected object range based on height, the height being based on the position of the communication device of the second wireless system, where the protected object range is in a space where the cross-sectional area obtained by truncating at a higher height is larger.

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