COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND INFORMATION PROCESSING DEVICE

Abstract

Provided is a device that performs processing for guaranteeing protection of a protection system in a case where a communication device, such as an access point, that executes wireless communication determines the frequency or the like to be used in said wireless communication. A communication system according to one aspect of the present disclosure comprises: a plurality communication devices that execute wireless communication by using a frequency of a specified frequency band; and an information processing device that records information relating to interference by the plurality of communication devices with respect to a protection system in the specified frequency band. Each of the communication devices estimates wireless communication interference with respect to the protection system by executing, prior to the execution of wireless communication, a single interference estimation for the protection system. In addition, the communication devices execute wireless communication if an interference limit value for the protection system is not exceeded by the sum of: the cumulative interference, obtained from the information, with respect to the protection system by the plurality of communication devices prior to the execution of single interference estimation; and the interference estimated by the execution of the single interference estimation.

Description

[Technical field]

[0001] The present disclosure relates to a communication system, a communication device, and an information processing device. [Background technology]

[0002] The problem of exhaustion of radio wave resources (e.g., frequencies) that can be allocated to wireless systems has surfaced due to the increase in wireless environments where a variety of wireless systems coexist and the enrichment of content provided via wireless. However, all frequency bands are used by existing wireless systems, making it difficult to allocate new radio wave resources. As a result, "Dynamic Spectrum Access (DSA)," which utilizes cognitive radio technology to utilize white space in time and space among frequency bands already allocated to specific wireless systems, is rapidly gaining attention as a means of generating the necessary radio wave resources. [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] FCC (Federal Communications Commissions), "Unlicensed Use of the 6 GHz Band Notice of Proposed Rulemaking ET Docket No. 18-295; GN Docket No. 17-183", October 2, 2018, "https: / / docs.fcc.gov / public / attachments / DOC-354364A1.pdf" [Non-Patent Document 2] WI-FI ALLIANCE, "6 GHz Update", August 9, 2019, "https: / / ecfsapi.fcc.gov / file / 10812984812495 / WFA%20Ex%20Parte%20-%20August%209%20Meeting.pdf" [Non-Patent Document 3] ETSI(European Telecommunications Standards Institute),"TR 103 231 V1.1.1 White Space Devices (WSD); Wireless Access Systems operating in the 470 MHz to 790 MHz TV broadcast band; Information on weblistings of TV White Space Databases (TVWSDBs)", February, 2014, https: / / www.etsi.org / deliver / etsi_tr / 103200_103299 / 103231 / 01.01.01_60 / tr_103231v010101p.pdf [Non-Patent Document 4] CEPT ECC, "ECC Report 186 Technical and operational requirements for the operation of white space devices under geo-location approach", January 2013," https: / / www.ecodocdb.dk / download / 124023a2-73ee / ECCREP186.PDF" [Non-Patent Document 5] Wireless Innovation Forum, "WINNF-TS-0112-V1.9.0 Requirements for Commercial Operation in the US 3550-3700 MHz Citizens Broadband Radio Service Band", December 2019,"https: / / winnf.memberclicks.net / assets / CBRS / WINNF-TS-0112.pdf" Summary of the Invention [Problem to be solved by the invention]

[0004] The 6 GHz band is currently attracting attention as a new shared band. The US Federal Communications Commission (FCC) has announced that it will open up a new frequency band from 5,925 to 7,125 MHz for unlicensed use. The European Conference of Postal and Telecommunications Administrations is also considering sharing the frequency band from 5,925 to 6,425 MHz. It has also been revealed that the Wi-Fi Alliance (WFA) has established the AFC Task Group with a view to sharing the 6 GHz band. The AFC Task Group is considering a model that has not been much considered in previous discussions on frequency sharing.

[0005] FIG. 1 shows a model called Embedded AFC. This model is one of the models being considered by the AFC Task Group. In dynamic spectrum sharing, each access point provides a wireless communication service that enables communication between terminals by wirelessly communicating with terminals (Clients). In this model, each access point calculates available frequencies to execute the wireless communication service, and selects a channel to be used from among the available frequencies. Therefore, since the network side that uses the frequencies to execute the wireless communication service determines the frequency to be used, this model can be said to be a network-driven spectrum sharing type model.

[0006] However, such a model does not provide an adequate mechanism for protecting the primary system that is the target of protection in dynamic spectrum sharing. For example, in the US's CBRS (Citizens Broadband Radio Service), a typical example of dynamic spectrum sharing, there is a server called SAS (Spectrum Access System) that manages radio wave usage and is managed by the CBRS organization. The SAS determines the communication parameters of each wireless communication service for all access points at once. This prevents interference with the primary system from exceeding the allowable limit.

[0007] On the other hand, in the case of Embedded AFC, the network side that uses the frequency determines the frequency, so in order to prevent interference in the primary system from exceeding the allowable value, each access point needs to exchange information and determine communication parameters such as transmission power. In other words, different operators that provide different wireless communication services need to directly contact each other. This, for example, gives rise to security concerns. In addition, the timing at which each access point determines the communication parameters varies, so there is a risk that the primary system will not be sufficiently protected.

[0008] Therefore, the present disclosure provides a device or the like that performs processing to ensure protection of a protection system when a communication device that performs wireless communication, such as an access point, itself determines a frequency to be used for the wireless communication. [Means for solving the problem]

[0009] A communication system according to one aspect of the present disclosure includes a plurality of communication devices that perform wireless communication using frequencies in a specific frequency band, and an information processing device that records information regarding interference of the plurality of communication devices with a protection system in the specific frequency band. The communication devices perform single interference estimation with the protection system before performing wireless communication to estimate interference of the wireless communication with the protection system. Also, when a sum of cumulative interference of the plurality of communication devices with the protection system before performing single interference estimation obtained from the information and interference estimated by performing single interference estimation does not exceed a limit value of interference with the protection system, the communication devices perform wireless communication.

[0010] This ensures protection of the primary system while the communication devices themselves decide the frequencies to be used for wireless communication. Also, there is no need for communication devices to exchange information with each other to protect the primary system, which is also excellent in terms of security.

[0011] the communication device transmits to the information processing device a value of the interference estimated by performing the single interference estimation; the information processing device authorizes the execution of the wireless communication when a sum of cumulative interference to the protection system caused by each communication device authorized to execute the wireless communication and interference estimated by executing the single interference estimation does not exceed a limit value of interference to the protection system; The communication device receives authorization to execute the wireless communication and executes the wireless communication. The communication system may also have the above configuration.

[0012] The communication device includes: Acquiring the information from the information processing device; confirming whether a sum of a cumulative interference to the protection system of the plurality of communication devices before the execution of the single interference estimation obtained from the information and an interference estimated by the execution of the single interference estimation does not exceed a limit value of interference to the protection system; if the confirmation is obtained, performing the wireless communication using the setting value used for the single interference estimation; The communication system may also have the above configuration.

[0013] The single interference estimation is to estimate interference to the protection system caused only by wireless communication of a communication device that executes the single interference estimation.

[0014] In another aspect of the present disclosure, an estimation unit that estimates interference of the wireless communication with a protection system in a specific frequency band by performing a single interference estimation with the protection system in the specific frequency band before performing wireless communication using a frequency of the specific frequency band; a wireless communication unit that performs the wireless communication when a sum of cumulative interferences of a plurality of communication devices to the protection system before the execution of the single interference estimation and interferences estimated by the execution of the single interference estimation does not exceed a limit value of interference to the protection system; A communication device is provided comprising:

[0015] a transmission unit that transmits a value of the interference estimated by executing the single interference estimation to a predetermined information processing device; an acquisition unit that acquires authorization to execute the wireless communication from the information processing device when a sum of a cumulative interference of the plurality of communication devices with respect to the protection system before the execution of the single interference estimation and an interference estimated by the execution of the single interference estimation does not exceed a limit value of interference with the protection system; Further equipped with The wireless communication unit receives authorization to execute the wireless communication and executes the wireless communication. The communication device may also have the above configuration.

[0016] an acquisition unit that acquires information regarding interference of the plurality of communication devices with the protection system; Further equipped with The wireless communication unit includes: confirming whether a sum of a cumulative interference to the protection system of the plurality of communication devices before the execution of the single interference estimation obtained from the information and an interference estimated by the execution of the single interference estimation does not exceed a limit value of interference to the protection system; if the confirmation is obtained, performing the wireless communication using the setting value used for the single interference estimation; The communication device may also have the above configuration.

[0017] In another aspect of the present disclosure, an acquisition unit that acquires information about interference estimated by single interference estimation performed by each of a plurality of communication devices that perform wireless communication using frequencies in a specific frequency band, against a protection system in the specific frequency band; an authorization unit that authorizes the execution of the wireless communication when a sum of a cumulative interference to the protection system caused by each communication device authorized to execute the wireless communication and an interference estimated by executing the single interference estimation does not exceed a limit value of interference to the protection system; a storage unit configured to store, when the execution of the wireless communication is authorized, the interference estimated by the execution of the single interference estimation as interference to the protection system; An information processing device comprising: [Brief description of the drawings]

[0018] [Figure 1] A diagram showing a model called Embedded AFC. [Diagram 2] FIG. 1 is a diagram showing a system model according to an embodiment of the present disclosure. [Diagram 3] FIG. 4 is a diagram showing an example of a communication sequence. [Figure 4] FIG. 13 is a diagram showing an example of calculation of an Exclusion Zone. [Diagram 5] FIG. 1 is a diagram for explaining area protection. [Figure 6] A diagram showing an example of conversion to a JSON object format. [Figure 7] FIG. 11 is a diagram showing another example of a communication sequence. [Figure 8] FIG. 2 is a diagram showing an example of components of a communication device and an assistance server. [Figure 9] FIG. 1 is a diagram showing an example of a system in which a proxy server acts as a proxy for communication with an assistance server. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] 2 is a diagram showing a system model according to an embodiment of the present disclosure. The system model according to the present embodiment is represented by a communication network 100, and includes a communication device 110, a terminal 120, a regulatory database 130, and an assistance server 140.

[0020] This embodiment is a communication system for performing wireless communication using frequencies in a specific frequency band. The wireless communication is performed by a plurality of communication devices 110, and each communication device 110 performs wireless communication with a terminal 120 under its control, thereby enabling communication between the terminals 120. In addition, the frequency used in the wireless communication is determined by the wireless communication network side, specifically, by the communication device 110. Therefore, so to speak, this embodiment performs network-driven spectrum sharing. In this disclosure, a process for determining the frequency will be described.

[0021] The communication network 100 includes at least a primary system and a secondary system. The primary system is a system (protection system) that is to be protected in a specific frequency band, and it is desired to suppress interference from other systems to a predetermined limit value or less. The secondary system means a system that is not a primary system. The primary system and the secondary system are configured by the communication device 110, or by the communication device 110 and the terminal 120. Various communication systems can be treated as the primary system or the secondary system, but in this embodiment, the primary system is a wireless system that uses a specific frequency band, and the secondary system is a wireless system that shares a part or all of the frequency band. That is, this system model will be described as a model of a communication system related to dynamic spectrum sharing (DSA: Dynamic Spectrum Access). It should be noted that this system model is not limited to a system related to dynamic spectrum sharing.

[0022] In dynamic spectrum sharing, typically, a communication control device such as a geolocation database (GLDB) or a spectrum access system (SAS) exists that supervises radio wave usage and determines the frequency to be used. However, as described above, in this embodiment, the frequency to be used is determined by the communication device 110, and therefore, in this disclosure, the description is given assuming that the communication control device does not exist. However, the communication control device may be included in the communication network 100, and the processing other than that performed by the communication device 110 in this embodiment may be performed by the communication control device.

[0023] In this description, terms of a specific system such as CBRS in the United States may be used to facilitate understanding, but when the contents of this disclosure are applied to another system, those terms should be read by replacing them with terms in the other system. In addition, the frequency band is not limited to a specific band such as the 6 GHz band.

[0024] A description of each of the components (entities) of communication network 100 is provided below.

[0025] As described above, the communication device 110 is a wireless device that provides a wireless communication service that enables communication between the terminals 120. Typically, a wireless base station (Base Station, Node B, eNB, gNB, etc.), a wireless access point (WAP: Wireless Access Point), etc., correspond to the communication device 110. In addition, the communication device 110 may be a wireless relay device, or may be a radio extension device called a Remote Radio Head (RRH).

[0026] In the following description, unless otherwise specified, the communication device 110 will be described as an entity that constitutes a secondary system.

[0027] The coverage (communication area) provided by the communication device 110 may be of various sizes, ranging from a large one such as a macrocell to a small one such as a picocell. A plurality of communication devices 110 may form one cell, such as a distributed antenna system (DAS). In addition, if the communication device 110 has a beamforming capability, a cell or a service area may be formed for each beam.

[0028] The communication device 110 does not necessarily have to be fixed. For example, the communication device 110 may be installed on a moving object such as an automobile. Also, the communication device 110 does not necessarily have to be on the ground. For example, the communication device 110 may be provided on an object that exists in the air or space, such as an aircraft, a drone, a helicopter, a High Altitude Platform Station (HAPS), a balloon, a satellite, etc. Also, the communication device 110 may be provided on an object that exists on or under the sea, such as a ship, a submarine, etc.

[0029] The communication device 110 may be used, operated, or managed by various operators. For example, a mobile network operator (MNO), a mobile virtual network operator (MVNO), a mobile network enabler (MNE), a mobile virtual network enabler (MVNE), a shared facility operator, a neutral host network operator (NHN), a broadcasting operator, an enterprise, an educational institution (a school corporation, a board of education of each local government, etc.), a real estate (a building, an apartment, etc.) manager, an individual, etc. may be assumed as operators related to the communication device 110. Note that operators related to the communication device 110 are not particularly limited. Also, the communication device 110 may be a shared facility used by a plurality of operators. Also, the operators who install, use, operate, and manage the facility may be different from each other.

[0030] The communication device 110 operated by a carrier is typically connected to the Internet via a core network, and is operated, managed, and maintained by a function called OA&M (Operation, Administration & Maintenance).

[0031] In order to determine the frequencies to be used, the communication device 110 is assumed to have the functions of a server that supervises radio wave usage, such as a GLDB (Geolocation database) or SAS (Spectrum Access System), in typical dynamic frequency sharing, and performs the following processing.

[0032] For example, the communication device 110 accesses the regulatory database 130 and acquires information related to protection of the primary system, such as the primary service, the exclusion zone, etc. Also, the communication device 110 stores and records the information (information preservation).

[0033] Examples of information necessary for protecting the primary system include location information of the primary system, communication parameters of the primary system, out-of-band emission limit (OOBE (Out-of-Band Emission) Limit), adjacent channel leakage ratio (ACLR), adjacent channel selectivity, fading margin, protection ratio (PR), etc. In areas where fixed values, acquisition methods, derivation methods, etc. are prescribed by laws and regulations in order to protect the primary system, it is desirable to use the information prescribed by the laws and regulations as information necessary for protecting the primary system.

[0034] For example, the communication device 110 enforces an Exclusion Zone. The Exclusion Zone is also called a secondary use prohibited area, and is used to determine available frequencies. Specifically, for example, when the communication device 110 is installed in a secondary use prohibited area that is provided for the purpose of protecting a primary system that uses frequency channel F1, the communication device 110 excludes the frequency channel F1 from available channels based on the Exclusion Zone.

[0035] For example, the communication device 110 calculates operational parameters for the wireless communication it provides, such as available frequencies, maximum allowable transmission power, etc., that do not cause harmful interference to the primary service. The communication device 110 may also calculate the available range of the communication parameters.

[0036] Furthermore, the communication device 110 in this embodiment executes the following processes, which will be described in detail later. Single-entry interference estimation - Single station interference map generation (for Area Protection) Sending the results of the single station interference estimation to the assistance server 140 - Retrieval of protection criteria map (PCM) from assistance server 140 -Determining communication parameters based on protection criteria maps etc.

[0037] In this embodiment, the frequency to be used is determined by the communication device 110, but in some cases, such as in an emergency, the frequency may be determined by a radio wave usage supervision server. Therefore, the communication device 110 may also be provided with a conventional function required when radio wave usage is managed by a radio wave usage supervision server.

[0038] The terminal 120 (User Equipment, User Terminal, User Station, Mobile Terminal, Mobile Station, etc.) is a device that performs wireless communication by a wireless communication service provided by the communication device 110. Typically, a communication device such as a smartphone corresponds to the terminal 120. Any device equipped with a wireless communication function can correspond to the terminal 120. For example, a device such as a commercial camera having a wireless communication function can also correspond to the terminal 120 even if wireless communication is not its main purpose. In addition, a communication device that transmits data to the terminal 120, such as a broadcasting business wireless station (FPU: Field Pickup Unit) that transmits images for television broadcasting from outside (on-site) to a broadcasting station to perform sports representation, etc., also corresponds to the terminal 120. In addition, the terminal 120 does not necessarily have to be used by a person. For example, a device such as a factory machine or a sensor installed in a building may be connected to a network and operate as the terminal 120, as in the so-called MTC (Machine Type Communication). Furthermore, a device called Customer Premises Equipment (CPE), which is provided to ensure an Internet connection, may act as the terminal 120.

[0039] In addition, the terminal 120 may be provided with a relay communication function, as typified by D2D (Device-to-Device) and V2X (Vehicle-to-Everything).

[0040] Similarly to the communication device 110, the terminal 120 does not need to be fixed or located on the ground. For example, an object in the air or space, such as an aircraft, a drone, a helicopter, or a satellite, may operate as the terminal 120. For example, an object on the sea or in the sea, such as a ship or a submarine, may operate as the terminal 120.

[0041] In this disclosure, unless otherwise specified, the terminal 120 corresponds to an entity where a wireless link using a frequency provided by a wireless access point terminates. However, depending on the functions provided by the terminal 120 and the network topology applied, the terminal 120 may operate in the same manner as the communication device 110. In other words, depending on the network topology, a device that can correspond to the communication device 110, such as a wireless access point, may correspond to the terminal 120, and a device that can correspond to the terminal 120, such as a smartphone, may correspond to the communication device 110.

[0042] The regulatory database 130 is a database that records information necessary for protection, such as the location information of the primary system, and is managed or operated by a national or regional radio regulatory agency (NRA: National Regulatory Authority). Usually, the communication device 110 obtains information necessary for protection of the primary system from the regulatory database 130 and executes the above-mentioned process using the information.

[0043] Examples of the regulatory database 130 include the Universal Licensing System (ULS) and the International Bureau Filing system (IBFS) operated by the Federal Communications Commission (FCC). In addition, a database that records communication devices 110 and terminals 120 that have received conformity certification, such as the Equipment Authorization System (EAS) managed by the Office of Engineering and Technology (OET) of the FCC, also corresponds to the regulatory database 130. In addition, a website of a public organization from which a kml file describing a protected area can be downloaded, such as the National Telecommunications and Information Administration (NTIA), also corresponds to the regulatory database 130.

[0044] The communication device 110 obtains information used to protect the primary system from such regulatory database 130. In order to adequately protect the primary system regardless of country, region, etc., it is preferable that the following information be obtainable as information necessary for protecting the primary system: The type of radio of the primary system. For example, it may be information indicating a fixed satellite, a core radio system, etc. Information on frequency usage -Transmission power information Location information such as latitude and longitude Antenna information such as gain, height, antenna type, etc. · Information on the Exclusion Zone. The Exclusion Zone can be expressed, for example, as a kml file, a polygon, a distance, a plane, or space. - Information on the protected point or area. The information can be expressed as latitude, longitude, kml file, polygon, plane / space, etc. Installation area information of the communication device 110 that is the target of interference calculation. For example, it can be expressed as a kml file, a polygon, a separation distance, a plane, a space, and the like. Information about protection criteria, which can be expressed as, for example, Carrier-to-Interference-plus-Noise Ratio (C / I), Carrier-to-Noise Ratio (C / N), Signal-to-Noise Ratio (SNR), Signal-to-Interference-plus-Noise Ratio (SINR), Protection Ratio (PR), maximum allowable interference power, etc. Fading margin Propagation model Clutter and Terrain Information

[0045] The communication device 110 may acquire information other than the above, or may acquire information from a database other than the regulatory database 130. For example, a regulatory requirement may be set for the communication device 110. In such a case, a database server that stores information related to the regulatory requirement may be set apart from the regulatory database 130. In such a case, the communication device 110 may acquire information related to the regulatory requirement from a database server other than the regulatory database 130. The regulatory requirement may include, for example, an out-of-band emission limit (OOBE), an adjacent channel leakage ratio (ACLR), an adjacent channel selectivity, and a blocking characteristic.

[0046] Also, in a case where a communication system is implemented across many countries, such as in Europe, the assistance server 140 and the regulatory database 130 may be provided for each country. In that case, a server that provides information for finding the database for each country may be prepared separately. The collection of information is described as a global database, and the server is described as a database discovery server. If there is a database discovery server, the communication device 110 may first access the database discovery server to obtain information for accessing the assistance server 140 or the regulatory database 130 in the country or region to which the communication device 110 belongs, such as a uniform resource locator (URL). For example, if it is possible to obtain a public list (Weblisting information) indicating the regulatory database 130 that can be referenced for each regulatory domain, such as ETSI TR 103 231, the regulatory database 130 may be accessed based on the list. In that case, the database discovery server may not be necessary.

[0047] Note that the information used to protect the primary system may not be obtained directly from the regulatory database 130 or the like. For example, an administrator of the communication network 100 may obtain the information from the regulatory database 130 and distribute it to each communication device 110. Therefore, communication between the regulatory database 130 and the communication device 110 is not necessarily performed. Therefore, in FIG. 2, the connection line (link) between the communication device 110 and the regulatory server 130 is shown by a dotted line.

[0048] The assistance server 140 is a server (information processing device) for assisting the processing of the communication device 110 that enables the protection of the primary system and the use of a specific frequency band for the secondary system. The assistance server 140 eliminates the need for communication between the communication devices 110.

[0049] The assistance server 140 of this embodiment executes the following processes, which will be described in detail later. Eligibility Check of the communication device 110 Decision on authorization of radio wave transmission (wireless communication) of the communication device 110 based on the protection standard map Recording information about interference with communication equipment (e.g. protection criteria maps) Providing information on interference with communication devices (e.g. protection standard maps)

[0050] The assistance server 140 differs from conventional radio wave usage supervision servers in dynamic spectrum sharing, such as a TVWS database (TVWSDB), a geolocation database (GLDB), and a Spectrum Access System (SAS), in the following points. Do not register the location information of the communication device 110 ·Do not perform cumulative interference calculation and interference margin allocation

[0051] The system model of this embodiment is configured by the entities as described above, and allows the terminals 120 under the control of each communication device 110 to communicate with each other via radio waves provided by the communication device 110, that is, wireless communication. However, communication between other entities may be wired or wireless.

[0052] Next, a description will be given of a series of processes executed to start wireless communication of communication device 110. Fig. 3 is a diagram showing an example of a communication sequence. The processes executed in each entity will be described with reference to Fig. 3.

[0053] Note that the processing of each communication device 110 is performed independently for each communication device 110. The assistance server 140 that communicates with each communication device 110 performs processing by considering only one communication device 110 that is currently communicating, without considering multiple communication devices 110 at the same time. In other words, the assistance server 140 responds to the communication devices 110 on a first-come, first-served basis. Therefore, in FIG. 3, it is assumed that one communication device 110 is communicating.

[0054] First, a procedure for verifying the eligibility of the communication device 110 is performed. This procedure is for checking whether the communication device 110 is qualified to use the target frequency band. The processes from T101 to T103 in FIG. 3 are included in this procedure.

[0055] The communication device 110 transmits an Eligibility Check Request to the assistance server 140 to request confirmation of eligibility (T101). The communication device 110 transmits information to be confirmed by the assistance server 140 together with the eligibility confirmation request. The information may be predetermined, or the assistance server 140 that has received the eligibility confirmation request may request the information from the communication device 110.

[0056] It is preferable to use a secure method such as HTTPS (HTTP plus TLS) for the eligibility confirmation request. The client certificate used in HTTPS is also subject to confirmation in the eligibility confirmation process.

[0057] Upon receiving the eligibility check request, the assistance server 140 performs an eligibility check process (T102). Items checked in the eligibility check process include, for example, the following:

[0058] The assistance server 140 checks whether the authentication has been passed. Specifically, it checks whether the communication device 110 has been certified by a public institution or the like. Examples of such certification include an FCC ID, a CE mark indicating that the device meets European safety standards, a technical standard conformity certification number, a construction design certification number, and a notification number for self-confirmation of technical standard conformity. Note that there are no particular limitations on the notation (e.g., new notation, old notation, etc.), form (e.g., batch number, barcode, etc.) of these.

[0059] The assistance server 140 also checks whether the assistance server 140 satisfies security requirements, for example, whether a client certificate required for access is authentic.

[0060] The information to be confirmed is not limited to the above, and may be information regarding devices included in the communication apparatus 110 (base station), for example.

[0061] If no abnormality is detected in the eligibility confirmation process, the assistance server 140 issues an Eligibility ID as an ID (Identifier) ​​indicating that the eligibility confirmation process has been completed normally.

[0062] It is preferable that the Eligibility ID is recorded in the assistance server 140 as registration information related to the communication device 110. For example, in the subsequent processing, when the communication device 110 having the Eligibility ID transmits the Eligibility ID to the assistance server 140, the assistance server 140 can omit or simplify the Eligibility Check.

[0063] The assistance server 140 may encrypt the eligibility ID using a private key. In this case, even if the eligibility ID is not recorded in the assistance server 140, the eligibility check after issuing the eligibility ID can be simplified. This is because when a request including the eligibility ID is received, the eligibility ID that can be decoded using the private key can be recognized as a legitimate ID.

[0064] In the procedures that follow, an eligibility check using the eligibility ID for communication device 110 may also be performed, but this will not be described below.

[0065] After completing the eligibility check process, the assistance server 140 returns an eligibility check response to the communication device 110 (T103). If the eligibility check process is completed normally, an Eligibility ID is returned. However, if the eligibility check process is not completed normally because the eligibility check request is incomplete or an abnormality is detected in the eligibility check process, it is preferable to return a response code indicating the reason for the unsuccessful completion. If an abnormality is detected in the client certificate, an HTTP status code (e.g., 400 Bad Request, 403 Forbidden, etc.) may be returned instead of a response code.

[0066] Next, a procedure is performed to obtain information necessary for protecting the primary system. This procedure includes the processes T201 and T202 in Figure 3.

[0067] The communication device 110 transmits a data retrieval request to the regulatory database 130 (T201). In response to the data retrieval request, the regulatory database 130 transmits requested data, i.e., information necessary for protecting the primary system described above, to the communication device 110 (T202). This puts the communication device 110 in a state where it can execute procedures for protecting the primary system.

[0068] The communication device 110 holds information necessary for protecting the primary system. Therefore, if there is no need to update this information, the steps T201 and T202 may be omitted. For example, the information necessary for protecting the primary system may be updated periodically. The period may be set appropriately, and may be set in units of seconds, minutes, hours, days, weeks, months, or the like.

[0069] Next, the procedure for protecting the primary system is carried out. This procedure includes the processes from T301 to T305 in Figure 3.

[0070] The communication device 110 performs single-station interference estimation processing based on information necessary for protecting the primary system (T301). The single-station interference estimation processing is interference estimation based on the assumption that a single communication device 110 is an interference source. In other words, interference to the primary system caused only by wireless communication of the communication device that performs the single-station interference estimation is estimated.

[0071] In reality, the primary system receives interference from multiple wireless communications using the same frequency. That is, it is necessary to consider the aggregated interference from each communication device 110. This aggregated interference is calculated based on the result of single-station interference estimation of each communication device 110.

[0072] At this time, a correction value may be added. For example, the correction value may be determined based on the three types of interference margin methods (Fixed / Predetermined, Flexible, Flexible Minimized) disclosed in ECC Report 186 of the European Conference of Postal and Telecommunications Administrations (CEPT).

[0073] In the single station interference estimation process, first, the communication device 110 determines desired communication parameters, that is, communication parameters to be used in the wireless communication service to be provided to the terminal 120. The communication parameters to be determined include at least the frequency range and maximum transmission power to be used. The communication device 110 may determine the frequency range, etc., by utilizing information acquired from a regulatory database.

[0074] The communication device 110 determines the frequency range of the communication parameters based on the obtained exclusion zone information. Specifically, the communication device 110 checks whether the location of the communication device 110 (i.e., its own location) is within the exclusion zone, and if it is within the exclusion zone, determines the frequency range of the communication parameters to be outside the frequency range associated with the exclusion zone.

[0075] If the exclusion zone is not provided, the communication device 110 calculates the exclusion zone. The exclusion zone can be calculated by applying a known calculation model, for example, a calculation method of the PAL Protection Area (PPA) disclosed in Non-Patent Document 5. Naturally, the applicable calculation method is not limited to this method. FIG. 4 is a diagram showing an example of calculation of the exclusion zone. In the example of FIG. 4, an exclusion zone in a core system (fixed system) in the 6 GHz band is shown. In addition, in the example of FIG. 4, six exclusion zones are shown, but the antennas used in each exclusion zone are different as shown in FIG. 4.

[0076] Furthermore, the communication device 110 determines the frequency range to be used based on information on the interference calculation target area associated with each primary system. Specifically, the communication device 110 checks whether its own position is within the interference calculation target area associated with each primary system, and if it is within the interference calculation target area, determines a frequency range other than the frequency range associated with the interference calculation target area as the frequency range of the communication parameters.

[0077] In addition, even if a frequency range overlaps a part or all of the frequency range associated with the interference calculation target area, it may be set as the frequency range of the communication parameters. For example, when the maximum transmission power is reduced, the interference calculation target area is reduced, so that the current maximum transmission power is within the interference calculation target area, but the reduced maximum transmission power may be outside the interference calculation target area.

[0078] The communication parameters may be determined based on an available range estimated by an available range estimation process based on a protection standard map, which will be described later.

[0079] After the communication parameters are determined, the communication device 110 performs single station interference estimation. However, in the above-mentioned frequency range determination, the communication device 110 can recognize whether it is a target of interference calculation. If it is not a target of interference calculation, it is not necessary to perform the single station interference estimation described below.

[0080] Note that the protection of the primary system includes point protection and area protection. Point protection is to protect a specific protection point such as a receiving antenna from interference. Point protection requires that the magnitude of interference (inflicted interference) caused by the communication device 110 to the protection point be equal to or less than a reference value. Therefore, the inflicted interference at the protection point is estimated. Area protection is to protect a specific protection area from interference. Specifically, area protection requires that the magnitude of interference at multiple protection points provided within the protection area be equal to or less than a limit value. Therefore, the inflicted interference at the multiple protection points is estimated.

[0081] 5 is a diagram explaining area protection. The area surrounded by a solid line indicates the protection area 200 of the primary system. Dotted lines (grid) are drawn in a lattice pattern within the protection area, and the intersections of the dotted lines are regarded as protection points 201. Interference calculation is performed at each protection point 201, and if the interference value at each protection point 201 is equal to or less than a limit value, it is regarded as being protected.

[0082] For example, when considering interference in terms of interference power, when performing point protection for a primary system m, the interference power of a secondary system s (that is, the interference power of a communication device 110 belonging to the secondary system s) may be calculated by the following formula.

number

[0083] Although the above formula is expressed in logarithms, formulas and values ​​expressed in antilogarithms may be used. The same applies to the following formulas.

[0084] If point protection must be implemented for multiple primary systems, single station interference estimation is performed for each primary system. The interference power of a secondary system s to multiple primary systems in point protection is expressed by a set expression (vector) as shown in the following equation. In the following equation, the total number of primary systems is M.

number

[0085] On the other hand, when area protection is performed for the primary system m, the interference power of the secondary system s to a point p within the protection area of ​​the primary system m is calculated by the following equation.

number

[0086] In addition, the propagation loss L s,m、p , the receiving antenna gain of the primary system G Rx、m、p For the calculation of the propagation loss L, a reference value specified in advance may be used. s,m、p The height of the receiving antenna required for the calculation may be used as the reference value.

[0087] The interference power of the secondary system s to each point in the protection area of ​​the primary system m is expressed as a set expression as shown in the following equation. In the following equation, the total number of protection points is P.

number

[0088] It should be noted that the above set representation, i.e., the set showing the interference power of the secondary systems for each point within the protection area, is referred to as a single station interference map.

[0089] When area protection is performed for multiple primary systems, single station interference estimation is performed for each primary system, as in the case of point protection. The interference power of the secondary system s to multiple primary systems in area protection is expressed as a set with sets as components, as shown in the following equation.

number

[0090] The interference power of the secondary system s can also be expressed by a set expression such as the following equation: In the following equation, the interference power of the secondary system s in both point protection and area protection can be expressed.

number

[0091] After the single station interference estimation process, an interference information notification (Estimated Interference Notification) is performed (T302). In other words, the communication device 110 notifies the user of the generated single station interference map, etc. The determined communication parameters are transmitted to the assistance server 140. Note that the single station interference map is usually converted into a format suitable for the communication protocol before being transmitted. For example, it may be converted into a JSON (JavaScript Object Notation) object format. FIG. 6 is a diagram showing an example of conversion into a JSON object format. Note that "..." in FIG. 6 <omitted>..." does not follow the JSON description rules and indicates that some information has been omitted.

[0092] In addition, an ID for identifying a protected entity, such as a protection point or a protection area, corresponding to the single station interference map is enclosed in the transmission of the single station interference map so that the assistance server 140 can recognize the protected entity. Also, an ID for identifying the communication device 110, which is a secondary system, may be enclosed.

[0093] Additionally, the transmission of the single station interference map preferably includes information indicating whether this transmission is a first-time transmission, i.e., to inform the assistance server 140 whether the transmission is for the first registration of the single station interference map or for updating the single station interference map.

[0094] For example, in the conversion example of FIG. 6, an "update" field is shown, and the value of the "update" field indicates whether or not it is an update notification of the single station interference map. When the value of the "update" field is True, it indicates an update notification, and when it is False, it indicates a new notification. Note that the "update" field does not have to be of Boolean type, and may be of string type or the like to indicate various states.

[0095] The assistance server 140 that has received the interference information notification executes authorization processing (Authorization) based on the single station interference map from the communication device 110 (T303).

[0096] The authorization process by the assistance server 140 refers to judging whether the communication device 110 can use radio waves without causing harmful interference to the primary system based on the stored information on interference of the communication device, and deciding whether to authorize radio wave use based on the judgment result. In the present disclosure, the authorization process is executed in the following steps.

[0097] First, the assistance server 140 extracts a protection reference map related to the single station interference map notified by the interference information notification from among a plurality of protection reference maps stored. That is, the assistance server 140 selects a protection reference map to be used in the current authorization process. Specifically, the assistance server 140 extracts a protection reference map that is the same protected entity and the same protected parameter as the notified single station interference map.

[0098] The protection criteria map is a type of information on interference of communication devices, and is a map showing the current values ​​of parameters to be protected in a protected entity. For example, in the case where the maximum allowable interference power level of a protection point is not exceeded, the protection criteria map shows the cumulative value (cumulative interference power) of interference power caused by communication devices 110 that have been approved for use so far. That is, in this case, the protection criteria map can also be called a cumulative interference power map. When a minimum C / I is specified, the protection criteria map is a map of C / I caused by communication devices 110 that have been approved for use so far.

[0099] The assistance server 140 updates the protection reference map based on the notified single station interference map. For example, in order not to exceed the maximum allowable interference power level, the assistance server 140 adds the value indicated in the single station interference map notified by the interference information notification to the current value of the protection reference map. Note that it is preferable to generate a temporary protection reference map by duplicating the stored protection reference map and update the temporary protection reference map.

[0100] If no communication device 110 has been authorized for use, a new protection standard map is generated. Alternatively, the protection standard map in the initial state may be updated. The values ​​of all elements of the protection standard map in the initial state, in other words, the initial values ​​of all elements of the protection standard map, are 0.

[0101] Based on the protection criteria map updated in this way, the assistance server 140 judges whether to authorize radio wave transmission based on desired communication parameters for the communication device 110 that notified the interference information notification. Note that thresholds (limit values) for judgment, such as the maximum allowable interference power level and the minimum C / I, are assumed to be determined before executing this authorization process, for example, when the primary system is registered.

[0102] For example, if the cumulative interference power in the updated protection standard map exceeds a predetermined limit value at any protection point within the protection area, the assistance server 140 may determine not to approve the communication parameters desired by the communication device 110 that notified the interference information notification, and may otherwise determine to approve them.

[0103] In this way, the assistance server 140 authorizes the communication device 110 that has issued the current interference information notification to execute wireless communication if the sum of the cumulative interference with the primary system caused by each communication device 110 that has been authorized to execute wireless communication and the interference estimated by the single interference estimation included in the current interference information notification does not exceed the limit value of interference with the primary system.

[0104] If it is determined that the communication parameters are not to be approved, the assistance server 140 returns the updated protection reference map to the state before the update. If the temporary protection reference map is updated, the temporary protection reference map can simply be deleted. If it is determined that the communication parameters are to be approved, the assistance server 140 stores the updated protection reference map as is. If the temporary protection reference map is updated, the stored protection reference map is replaced with the updated temporary protection reference map. In this way, the values ​​of the parameters to be protected in the stored protection reference map are updated, and processing can be performed for the next communication device that has notified the interference information notification.

[0105] Additionally, the assistance server 140 may also record a single station interference map for each communication device 110 in addition to the protection criteria map.

[0106] The assistance server 140 notifies the authorization result as a response to the interference information notification (T304). The content of the response differs depending on the authorization result.

[0107] If it is determined that the desired communication parameters are not approved, the assistance server 140 may simply reject the use of the desired communication parameters by creating a rejection response indicating this to the communication device 110.

[0108] Alternatively, assistance server 140 may calculate an adjustment value for a communication parameter and transmit the adjustment value together with a rejection response. In this case, use of the desired communication parameter is rejected, but if the adjustment value for the communication parameter is acceptable to communication device 110, communication device 110 can use the shared frequency. For example, the adjustment value for the transmission power can be the excess of the cumulative interference power from the maximum allowable interference power level. In this case, communication device 110 that has received the adjustment value needs to transmit the adjustment value to the access server as the desired transmission power value.

[0109] Alternatively, the assistance server 140 may send the adjustment value of the communication parameter together with the authorization response, rather than together with the rejection response. The authorization response is authorization on the premise that the transmission power is set as the adjustment value. In this case, the communication device 110 that receives the adjustment value does not need to send the adjustment value to the access server as the desired transmission power value. Also, in this case, the access server updates the protection criteria map based on the adjustment value of the communication parameter.

[0110] In addition, after transmitting an authorization result to communication device 110 indicating that the desired communication parameters are not authorized, if the desired communication parameters are received again from communication device 110, and the single-station interference map previously notified by communication device 110 is recorded, assistance server 140 may perform authorization processing based on the difference between the previous and current single-station interference maps.

[0111] The communication device 110 that receives the authorization result executes a process based on the response content. The process content also differs depending on the response content.

[0112] If a rejection response is received without an adjustment value, communication device 110 changes the desired communication parameters, and then executes the single-station interference recording process again to notify interference information. That is, the processes from T301 to T304 are performed again.

[0113] If a rejection response is received together with the adjustment value, the communication device 110 determines whether to accept the received adjustment value. Based on the determination, the communication device 110 changes the desired communication parameters and executes the single station interference recording process again. In this case, the processes from T301 to T304 are executed again.

[0114] When an authorization response is received, the communication device 110 sets the communication parameters (T305). However, when an adjustment value is received together with the authorization response, the communication device 110 sets the communication parameters based on the received adjustment value. When an authorization response is received without an adjustment value, the communication device 110 sets the desired communication parameters as they are as the communication parameters.

[0115] By performing the process according to the communication sequence of FIG. 3, it is possible to protect the primary system from the cumulative interference of the communication devices 110 while avoiding communication between the communication devices 110.

[0116] 3, the assistance server 140 holds information on cumulative interference such as a protection reference map, and therefore authorizes communication of the communication device 110 based on the cumulative interference. However, it is also possible for the communication device 110 to obtain the information on cumulative interference and check whether or not communication parameters can be used.

[0117] Fig. 7 is a diagram showing another example of a communication sequence. The example in Fig. 7 is the same as the example in Fig. 3 up until the communication device 110 acquires information required for protecting the primary system (T202), but the subsequent processing is partially different.

[0118] The communication device 110 transmits a request (Inquiry Request) for a protection standard map to the assistance server 140 (T401). The assistance server 140 executes a search (PCM search) for a protection standard map based on the request (T402). This extracts a protection standard map corresponding to the request from among a plurality of protection standard maps. That is, information on accumulated interference of the communication device 110 having the same protection entity, utilization frequency, etc. is acquired. Then, the assistance server 140 transmits the extracted protection standard map to the communication device 110 as a reply (Inquiry Response) to the request (T403).

[0119] For example, the communication device 110 may include a protected entity ID in the request, in which case the assistance server 140 retrieves the protection criteria map for that protected entity ID.

[0120] Also, for example, the communication device 110 may include location information of the communication device 110 in the request. In this case, the assistance server 140 recognizes a protected entity based on the location information and extracts a protection criteria map for the recognized protected entity.

[0121] Alternatively, the communication device 110 may request all protection criteria maps. In this case, the assistance server 140 generates and returns dump files related to all protection criteria maps. Since the size of the dump file may be enormous, the response may include information on resources for downloading the dump file, such as a uniform resource identifier (URI) or URL, instead of the dump file.

[0122] The communication device 110 performs a usability check process based on the received protection standard map (T404). That is, the communication device 110 checks whether the desired communication parameters are usable.

[0123] Specifically, the communication device 110 uses the received protection criteria map to calculate an interference margin, i.e., an allowable amount of interference. It is possible to calculate the allowable amount of interference as the difference between the cumulative interference value indicated by the protection criteria map and the limit value of the cumulative interference. The communication device 110 estimates the amount of interference with desired communication parameters by performing single-station interference estimation, and if the interference falls within the allowable amount of interference, it is determined that the communication device 110 is available. Note that the communication device 110 may calculate the available range of the communication parameters by changing the values ​​of the communication parameters, for example.

[0124] For example, an example of a method for calculating the range of applicable transmission power in a frequency range associated with a protected entity will be described. In this method, the path loss L total The interference margin is I margin and the upper limit of the transmission power is P MaxEirp Then, the following inequality holds:

number

number

[0125] In the above description, the communication device 110 calculates the allowable interference amount from the protection standard map, but the assistance server 140 may calculate the allowable interference amount and transmit it to the communication device 110. In this case, the assistance server 140 may adjust the value of the allowable interference amount in advance, taking into account the presence of multiple communication devices 110.

[0126] The communication device 110 sets communication parameters from the available range calculated in this way (T305). In this case, the interference limit value set for the primary system is not exceeded. Therefore, as in the example of FIG. 3, the wireless communication may be started without the authorization of the assistance server 140, although the wireless communication may be started without the authorization of the assistance server 140, unlike the example of FIG. 3. That is, the communication device 110 checks whether the sum of the interference estimated by the execution of the single interference estimation by itself and the cumulative interference of the multiple communication devices before the execution of the single interference estimation obtained from the interference information from the assistance server 140 does not exceed the interference limit value for the primary system, and when the confirmation is obtained, the wireless communication may be performed using the setting value used for the single interference estimation.

[0127] Regardless of whether authorization from the assistance server 140 is required, the communication device 110 notifies the assistance server 140 of interference due to the communication parameters to be used (T302), similarly to the example in FIG. 3. This is to cause the protection reference map stored by the assistance server 140 to be updated based on the notification contents. Note that the communication device 110 may update the protection reference map and transmit the updated protection reference map to the assistance server 140. The assistance server 140 may simply replace the protection reference map stored therein with the received protection reference map.

[0128] Also, a situation may be assumed in which there are multiple assistance servers 140. In that case, if there is no problem with information exchange between the assistance servers 140, it is preferable that the multiple assistance servers 140 exchange information and have a common protection standard map between the assistance servers 140.

[0129] In order to facilitate multiple assistance servers 140 having a common protection reference map, it is preferable that the single station interference map estimated by the communication device 110 is recorded only in a specific (preferably one) assistance server 140. It is also preferable that each assistance server 140 separately records the protection reference map calculated for the communication device 110 it manages and the protection reference map generated by multiple assistance servers 140 in cooperation with each other.

[0130] For example, each assistance server 140 may store a protection criteria map PCM for the communication device 110 that it manages. self to the other assistance servers 140. As a result, each assistance server 140 receives the protection criteria map PCM for the communication device 110 under the control of the assistance server 140 from the other assistance servers 140. other Each assistance server 140 receives the common protection criteria map PCM common can be calculated using the following formula:

number

[0131] As described above, in the present disclosure, before the communication device 110 executes wireless communication, it executes single interference estimation for the primary system to estimate interference. Also, when the sum of the interference and the cumulative interference of the multiple communication devices for the primary system before the execution of the single interference estimation, which is obtained from the interference information recorded by the assistance server 140, does not exceed a limit value, the wireless communication is executed. This makes it possible to sufficiently protect the primary system. Also, since information is not exchanged between the communication devices 110, security problems can be prevented.

[0132] The components of each device are provided to execute the above-mentioned processes. Fig. 8 is a diagram showing an example of components of the communication device 110 and the assistance server 140. In the example of Fig. 8, the communication device 110 includes a transmission unit 111, an acquisition unit 112, an estimation unit 113, a wireless communication unit 114, and an antenna 115. The assistance server 140 includes a transmission unit 141, an acquisition unit 142, an authorization unit 143, and a storage unit 144.

[0133] The transmitting unit 111 of the communication device 110 transmits an eligibility confirmation request (T101), an interference information notification (T302), and a PCM request request (T401) to the assistance server 140, as shown in Figs. 3 and 7. The acquiring unit 112 of the communication device 110 acquires (receives) an eligibility confirmation response (T103), an authorization result (T304), and a PCM request response (T403) from the assistance server 140. The estimating unit 113 is responsible for a single interference estimation process (T301) and an availability confirmation process (T404), and executes each process included in these processes. When authorization is received, the wireless communication unit 114 sets communication parameters (T305) to execute wireless communication, and radio waves for the wireless communication are emitted from the antenna 115.

[0134] The transmitting unit 141 of the assistance server 140 transmits the eligibility confirmation response (T103), the authorization result (T304), and the PCM request response (T403). The acquiring unit 142 of the assistance server 140 receives the eligibility confirmation request (T101), the interference information notification (T302), and the PCM request (T401). The authorization unit controls the authorization process (T303) and executes each process included in the authorization process. The storage unit stores the protection standard map. The cumulative interference value calculated by the authorization unit is recorded in the protection standard map (the value is updated) every time authorization process is performed for each communication device 110. By storing the record, it becomes possible to determine whether or not the upper limit value of interference will be exceeded in the current authorization process. The storage unit also controls the PCM search (T402).

[0135] 8 can be realized by known communication devices, software running on a computer, etc., and therefore details are omitted. For example, a PCM search can be realized by software having a database function.

[0136] Note that the example in FIG. 8 shows components responsible for executing the processes described above, and components related to other processes are omitted.

[0137] In the above description, the communication device 110 communicates directly with the assistance server 140. However, in reality, an agent server such as a proxy server or a network manager may handle communications with the assistance server 140 on behalf of the communication device 110.

[0138] Fig. 9 is a diagram showing an example of a system in which a proxy server acts as a proxy for communication with assistance server 140. Note that regulatory database 130 is omitted. In the example of Fig. 9, communication device 110 and assistance server 140 do not communicate directly with each other, but communicate via the proxy server.

[0139] 3 and 7. In other words, the proxy server may control communication device 110. For example, communication device 110 may receive an instruction to set communication parameters from the proxy server and execute wireless communication with the settings, and the proxy server may perform other processes. When the proxy server receives an adjustment value together with the authorization response, the proxy server may instruct communication device 110 to set communication parameters based on the received adjustment value. When the proxy server receives an authorization response without an adjustment value, the proxy server may instruct communication device 110 to set the desired communication parameters as communication parameters as they are.

[0140] In this way, the proxy server is also considered to be the communication device 110 because it takes on part of the processing of the communication device 110 .

[0141] 9, communication with the regulatory database 130 may be performed by the proxy server or by the communication device 110. However, when the proxy server executes single-station interference estimation, the proxy server communicates with the regulatory database 130. As described above, if the proxy server has information necessary for protecting the primary system, communication with the regulatory database 130 does not have to be performed.

[0142] In addition, in the interference information notification, the proxy server may adjust the value of the result of single-station interference based on the number of communication devices 110 managed, and notify the assistance server 140. In addition, when instructing communication parameters of the communication devices 110, the proxy server may adjust the communication parameters taking into account the number of communication devices 110, etc.

[0143] The above-described embodiment shows an example for realizing the present disclosure, and the present disclosure can be implemented in various other forms. For example, various modifications, substitutions, omissions, or combinations thereof are possible without departing from the gist of the present disclosure. Such modifications, substitutions, omissions, etc. are also included in the scope of the present disclosure, as well as in the scope of the invention and its equivalents described in the claims.

[0144] For example, the processes performed by the assistance server 140 may be performed by multiple servers. For example, the eligibility check process and the authorization process may be performed by separate servers.

[0145] Furthermore, the processing procedures described in the present disclosure, such as the above-mentioned communication sequence, may be regarded as a method having a series of these procedures. Alternatively, they may be regarded as a program for causing a computer to execute the series of these procedures, or as a recording medium for storing the program. The type of recording medium is not particularly limited, as it does not affect the embodiment of the present disclosure.

[0146] The present disclosure can also be configured as follows. [1] A plurality of communication devices that perform wireless communication using frequencies in a specific frequency band; an information processing device that records information regarding interference of the plurality of communication devices with a protection system in the specific frequency band; Equipped with The communication device includes: performing a single interference estimation for the protection system prior to performing the wireless communication to estimate interference of the wireless communication with the protection system; When a sum of a cumulative interference to the protection system of the plurality of communication devices before the execution of the single interference estimation obtained from the information and an interference estimated by the execution of the single interference estimation does not exceed a limit value of interference to the protection system, the wireless communication is performed. Communication systems. [2] the communication device transmits to the information processing device a value of the interference estimated by performing the single interference estimation; the information processing device authorizes the execution of the wireless communication when a sum of cumulative interference to the protection system caused by each communication device authorized to execute the wireless communication and interference estimated by executing the single interference estimation does not exceed a limit value of interference to the protection system; The communication device receives authorization to execute the wireless communication and executes the wireless communication. A communication system as described in [1]. [3] The communication device includes: Acquiring the information from the information processing device; confirming whether a sum of a cumulative interference to the protection system of the plurality of communication devices before the execution of the single interference estimation obtained from the information and an interference estimated by the execution of the single interference estimation does not exceed a limit value of interference to the protection system; When the confirmation is obtained, the wireless communication is performed using the setting value used for the single interference estimation. [2] A communication system according to the present invention. [4] The single interference estimation is to estimate interference to the protection system caused only by wireless communication of the communication device that executes the single interference estimation. A communication system according to any one of [1] to [3]. [5] an estimation unit that estimates interference of the wireless communication with a protection system in a specific frequency band by performing a single interference estimation with the protection system in the specific frequency band before performing wireless communication using a frequency of the specific frequency band; a wireless communication unit that performs the wireless communication when a sum of cumulative interferences of a plurality of communication devices to the protection system before the execution of the single interference estimation and interferences estimated by the execution of the single interference estimation does not exceed a limit value of interference to the protection system; A communication device comprising: [6] a transmission unit that transmits a value of the interference estimated by executing the single interference estimation to a predetermined information processing device; an acquisition unit that acquires authorization to execute the wireless communication from the information processing device when a sum of a cumulative interference of the plurality of communication devices with respect to the protection system before the execution of the single interference estimation and an interference estimated by the execution of the single interference estimation does not exceed a limit value of interference with the protection system; Further equipped with The wireless communication unit receives permission to perform the wireless communication and performs the wireless communication. [5] A communication device according to the present invention. [7] an acquisition unit that acquires information regarding interference of the plurality of communication devices with the protection system; Further equipped with The wireless communication unit includes: confirming whether a sum of a cumulative interference to the protection system of the plurality of communication devices before the execution of the single interference estimation obtained from the information and an interference estimated by the execution of the single interference estimation does not exceed a limit value of interference to the protection system; When the confirmation is obtained, the wireless communication is performed using the setting value used for the single interference estimation. [5] A communication device according to the present invention. [8] The single interference estimation is to estimate an interference value caused only by wireless communication of a communication device that executes the single interference estimation, to the protection system. A communication device according to any one of [5] to [7]. [9] an acquisition unit that acquires information about interference estimated by single interference estimation performed by each of a plurality of communication devices that perform wireless communication using frequencies in a specific frequency band, against a protection system in the specific frequency band; an authorization unit that authorizes the execution of the wireless communication when a sum of a cumulative interference to the protection system caused by each communication device authorized to execute the wireless communication and an interference estimated by executing the single interference estimation does not exceed a limit value of interference to the protection system; a storage unit configured to store, when the execution of the wireless communication is authorized, the interference estimated by the execution of the single interference estimation as interference to the protection system; An information processing device comprising:

[10] The single interference estimation is to estimate an interference value caused only by wireless communication of a communication device that executes the single interference estimation, to the protection system. [9] An information processing device according to the present invention. [Explanation of symbols]

[0147] 100 Communication Network 110 Communication equipment 111 Transmitter of communication device 112 Acquisition unit of communication device 113 Estimation Department 114 Wireless Communication Department 115 Antenna 120 terminals 130 Regulatory Database 140 Assistance server (information processing device) 141 Assistance Server Transmitter 142 Assistance Server Acquisition Section 143 Licensing Department 144 Storage section 200 Protected Area 201 Protection Points< / omitted>

Claims

1. A plurality of communication devices that perform wireless communication using frequencies in a specific frequency band; an information processing device that records information regarding interference of the plurality of communication devices with a protection system in the specific frequency band; Equipped with The communication device includes: performing a single interference estimation for the protection system prior to performing the wireless communication to estimate interference of the wireless communication with the protection system; Acquiring the information from the information processing device; confirming whether a sum of a cumulative interference to the protection system of the plurality of communication devices before the execution of the single interference estimation obtained from the information and an interference estimated by the execution of the single interference estimation does not exceed a limit value of interference to the protection system; if the confirmation is obtained, performing the wireless communication using the setting value used for the single interference estimation; Communication systems.

2. The single interference estimation is to estimate interference to the protection system caused only by wireless communication of the communication device performing the single interference estimation. The communication system according to claim 1 .

3. an estimation unit that estimates interference of the wireless communication with a protection system in a specific frequency band by performing a single interference estimation with the protection system in the specific frequency band before performing wireless communication using a frequency of the specific frequency band; An acquisition unit that acquires information regarding interference of a plurality of communication devices with the protection system; confirming whether a sum of a cumulative interference to the protection system of the plurality of communication devices before the execution of the single interference estimation obtained from the information and an interference estimated by the execution of the single interference estimation does not exceed a limit value of interference to the protection system; if the confirmation is obtained, performing the wireless communication using the setting value used for the single interference estimation; A wireless communication unit; A communication device comprising:

4. The single interference estimation is to estimate an interference value caused only by wireless communication of a communication device performing the single interference estimation, to the protection system. The communication device according to claim 3.

Images