Information processing device, communication device, and communication control method

Abstract

[Problem] To increase frequency utilization efficiency by enabling a mobile communication device to perform secondary use of a frequency. [Solution] An information processing device according to the present disclosure comprises: an acquisition unit that acquires information pertaining to the movement of a communication device that seeks secondary use of a frequency included in a frequency band allocated to a wireless system of interest or in a frequency band adjacent to said frequency band, and information pertaining to a first region for which the communication device seeks secondary use of the frequency; a processing unit that, on the basis of the information pertaining to the movement of the communication device and the information pertaining to the first region, calculates information pertaining to a second region in which the communication device can perform secondary use of the frequency; and a notification unit that notifies the communication device or an intermediate device that acts on behalf of the communication device of the information pertaining to the second region.

Description

Information processing device, communication device, and communication control method

[0001] The present disclosure relates to an information processing device, a communication device, and a communication control method.

[0002] Dynamic spectrum access (DSA) technology is known as a way to resolve the depletion of radio wave resources (frequencies) that can be allocated to wireless systems and to free up necessary radio wave resources. DSA utilizes white space in frequency bands that have already been allocated to specific wireless systems.

[0003] The FCC rules regarding unlicensed use of the 5925-7125 MHz band in the United States were revised on March 8, 2024. This resulted in the creation of a new Very Low Power (VLP) class that does not require an AFC system and can be used both indoors and outdoors (Reference: https: / / www.federalregister.gov / documents / 2024 / 01 / 08 / 2023-28006 / unlicensed-use-of-the-6-ghz-band-and-expanding-flexible-use-in-mid-band-spectrum-between-37-and-24).

[0004] As a result of studies into frequency sharing with existing wireless systems (hereinafter referred to as "existing systems"), it has been decided that VLP devices will be permitted to have a maximum EIRP of 14 dBm and a maximum power flux density (PSD) of -5 dBm / MHz. However, when using certain channel widths, i.e., narrowband channel widths, the maximum EIRP does not reach 14 dBm due to the impact of the maximum PSD regulations (for example, in the case of a 20 MHz channel, which is the narrowest band in the channel definition specified in Wi-Fi 6E, -5 dBm / MHz + 10log10(20 MHz) = 8 dBm < 14 dBm).

[0005] To address this issue, the FCC has proposed a rule change to introduce a new geofencing system similar to the AFC system, define VLP devices (access points) that utilize the geofencing system as geofenced VLPs, and raise the maximum PSD to 1 dBm / MHz. Geofenced VLPs would be able to use a maximum EIRP of 1 dBm / MHz + 10log10(20 MHz) = 14 dBm, even with the same 20 MHz bandwidth (see https: / / docs.fcc.gov / public / attachments / FCC-23-86A1.pdf).

[0006] The role of the geofencing system is to protect existing systems (fixed microwave, radio astronomy observatories, etc.) in the 5925-6425 MHz and 6525-6875 MHz bands, similar to the AFC system, as well as existing systems in the 6425-6525 MHz and 6875-7125 MHz bands. These existing systems in the 6425-6525 MHz and 6875-7125 MHz bands, or services using these existing systems, include the following: - Fixed Satellite Service (earth-to-space) (FSS) - Broadcast Auxiliary Service (BAS) - Cable Television Relay Service (CTRS) (using fixed microwave systems) - Low Power Auxiliary Stations (LPAS) (using wireless microphones, cameras, etc.)

[0007] The geofencing system determines a geofence, which is an area (two-dimensional or three-dimensional area) on a certain frequency channel that allows free secondary use while protecting these businesses and systems, and provides the determined geofence information to a geofenced VLP access point. The geofenced VLP access point uses radio waves in accordance with the acquired geofence information.

[0008] Here, it is assumed that the geofenced VLP access point is mobile on the ground, in the air, or in space, and naturally, if it moves to a location outside the area defined by the geofence, a new geofence must be determined.

[0009] 47 CFR Part 15 Subpart H White Space Devices, available at: https: / / www.ecfr.gov / current / title-47 / chapter-I / subchapter-A / part-15 / subpart-H47 CFR Part 96 Citizens Broadband Radio Service, https: / / www.ecfr.gov / current / title-47 / chapter-I / subchapter-D / part-9647 CFR Part 15 Subpart E Unlicensed National Information Infrastructure Devices, https: / / www.ecfr.gov / current / title-47 / chapter-I / subchapter-A / part-15 / subpart-EETSI EN 303 387 Reconfigurable Radio Systems (RRS); Signalling Protocols and information exchange for Coordinated use of TV White Spaces; Interface between Cognitive Radio System (CRS) and Spectrum Coordinator (SC)IEEE Standard for Information technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Specific requirements-Part 19: Wireless Network Coexistence Methods“LSA Implementation”, CEPT, available at: https: / / www.cept.org / ecc / topics / lsa-implementation FY2021 Report of the New Generation Mobile Communications Systems Committee, Information and Communications Technology Subcommittee, Information and Communications Council, Consultation No. 2038, "Technical Requirements for New Generation Mobile Communications Systems," "Technical Requirements for Mobile Communications Systems in the 2.3 GHz Band," April 2021, New Generation Mobile Communications Systems Committee, available at: https: / / www.soumu.go.jp / main_content / 000745696.pdf; "940660 D02 CPE-CBSD Handshake Procedures v02," Federal Communications Commission Office of Engineering and Technology Laboratory Division, October 2019, available at: https: / / apps.fcc.gov / oetcf / kdb / forms / FTSSearchResultPage.cfm?id=229297&switch=P; "New TARDyS3 Portal and List of Protected Facilities in the 3.5 GHz Band," Federal Communications Commission, available at: https: / / www.fcc.gov / document / new-tardys3-portal-and-list-protected-facilities-35-ghz-band “NTIA Report: Incumbent Informing Capability (IIC) for Time-Based Spectrum Sharing”, National Telecommunications and Information Administration, available at: https: / / www.ntia.gov / report / 2021 / ntia-report-incumbent-informing-capability-iic-time-based-spectrum-sharing"953436 D01 OET Laboratory Services API”, Office of Engineering and Technology, available at: https: / / apps.fcc.gov / oetcf / kdb / forms / FTSSearchResultPage.cfm?id=50070&switch=P“WINNF-TS-0247 CBRS Certified Professional Installer Accreditation Technical Specification”, Wireless Innovation Forum, available at: https: / / winnf.memberclicks.net / assets / CBRS / WINNF-TS-0247.pdf“WINNF-SSC-0010 Signaling Protocols and Procedures for Citizens Broadband Radio Service (CBRS): WInnForum Recognized CBRS Grouping Information”, Wireless Innovation Forum, available at: https: / / winnf.memberclicks.net / assets / CBRS / WINNF-SSC-0010.pdf“WINNF-TS-0112 Requirements for Commercial Operation in the U.S. 3550-3700 MHz Citizens Broadband Radio Service Band”, Wireless Innovation Forum, available at: https: / / winnf.memberclicks.net / assets / work_products / Specifications / WINNF-TS-0112-V1.9.1%20CBRS%20Operational%20and%20Functional%20Requirements.pdfDraft 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.pdfOfcom, “Hybrid sharing: enabling both licensed mobile and Wi-Fi users to access the upper 6 GHz band”, 6 July 2023, version 2, https: / / www.ofcom.org.uk / __data / assets / pdf_file / 0031 / 263776 / condoc-upper-6ghz-review-june23-v2.pdf.

[0010] The present disclosure provides an information processing device, a communication device, and a communication control method that can improve frequency utilization efficiency by enabling secondary use of frequencies for communication devices having mobility.

[0011] The information processing device of the present disclosure includes an acquisition unit that acquires information regarding the movement of a communication device that wishes to make secondary use of a frequency included in a frequency band allocated to a target wireless system or a frequency band adjacent to the frequency band, and information regarding a first region in which the communication device wishes to make secondary use of the frequency; a processing unit that calculates information regarding a second region in which the communication device can make secondary use of the frequency based on the information regarding the movement of the communication device and the information regarding the first region; and a notification unit that notifies the communication device or an intermediate device acting on behalf of the communication device of the information regarding the second region.

[0012] 1 is a diagram showing a system model according to an embodiment of the present disclosure. FIG. 1 is a diagram showing an example where a plurality of information processing devices exist. FIG. 2 is a diagram showing an example where a plurality of information processing devices exist. FIG. 3 is a diagram showing an example where an intermediate device including the functions of a secondary information processing device and a communication device including the functions of a secondary information processing device are connected to an information processing device that is a master information processing device. FIG. 4 is a diagram showing various scenarios for secondary use of frequency bands. FIG. 5 is a diagram showing an example where a communication device and a terminal are connected via their respective wireless interfaces. FIG. 6 is a diagram showing an example where two communication devices are connected to a management interface of an information processing device via their respective management interfaces, thereby enabling transmission and reception of information. FIG. 7 is a diagram showing an example of a signaling flow assuming D2D (Device-to-Device) or V2X (Vehicle-to-Everything) communication between terminals. FIG. 8 is a diagram showing an example of a system configuration including five types of entities and the connection relationships between these entities according to this embodiment. FIG. 9 is a block diagram showing an example of an information processing device and a communication device according to this embodiment. FIG. 10 is an explanatory diagram of a first information processing method. FIG. 11 is an explanatory diagram of a second information processing method. FIG. 12 is an explanatory diagram of a third information processing method. FIG. 13 is a diagram showing an example of calculating a second movable area. 15 additionally showing a first region. FIG. 16 is a diagram showing an example in which a peripheral region overlaps with a first region. FIG. 17 is a flowchart of an example of processing of an information processing method performed by an information processing device. FIG. 18 is a flowchart of an example of processing of a communication control method performed by a communication device. FIG. 19 is a diagram showing an example of a system configuration in which a communication device is equipped with information processing functions that an information processing device has. FIG. 20 is a block diagram of an example of a communication device in the system configuration example of FIG. 21. FIG. 22 is a flowchart of an example of processing of a communication control method performed by a communication device.

[0013] <<1. Typical anticipated scenarios>> <1.1 System model>

[0014] 1 shows a system model according to an embodiment of the present disclosure. As shown in FIG. 1, this system model is composed of the following entities: information processing device 200, communication device 110 (communication devices 110A to 110D), terminal 120, intermediate device 130, information recording device 300, and information notification device 400.

[0015] <1.1.1 Information Processing Device> The information processing device 200 is a device that has the function of determining, granting permission / authorization to use, instructing, and / or managing communication parameters of one or more communication devices 110 in accordance with one or more policies related to frequency usage. The communication parameters may include, for example, one or more frequency channels in a frequency band targeted for secondary use and maximum transmission power associated with the frequency channels. Other parameters related to wireless communication may also be included in the communication parameters. Typically, software and applications capable of executing processing based on the above functions are deployed and operated on the cloud, but for convenience of explanation, these will also be treated as information processing devices.

[0016] The policy may include, for example, a policy related to authorization of secondary band usage in a predetermined frequency band. Examples of the information processing device 200 realized in accordance with such a policy include, for example, a TV White Space Database (TVWSDB) (Non-Patent Document 1) and a Geolocation Database (GLDB) that manage TV white spaces, a Spectrum Access System (SAS) that manages the Citizens Broadband Radio Service (CBRS) (Non-Patent Document 2) in the U.S. 3550-3700 MHz band, and an Automated Frequency Coordination (AFC) (Non-Patent Document 3) that manages the 6 GHz band in the U.S. and Canada. Without being limited to these examples, any entity having a function of determining, notifying, granting permission / authorization, instructing, and / or managing communication parameters of one or more communication devices 110 in accordance with some policy related to authorization of secondary band usage in a predetermined frequency band may be considered to be the information processing device 200. The information processing device 200 may have the functionality to determine communication parameters, authorize / authorize, instruct and / or manage the terminal 120 .

[0017] The policy may include, for example, a coexistence policy between wireless systems in a predetermined frequency band. Coexistence between wireless systems typically refers to a state in which compatibility is achieved when heterogeneous / homogeneous wireless systems with the same frequency usage priority (primary, secondary, etc.), which will be described later, share the same frequency and / or use adjacent frequencies. Examples of the information processing device 200 implemented according to such a policy include, for example, a Spectrum Coordinator (SC) defined in ETSI (European Telecommunications Standards Institute) EN 303 387 (Non-Patent Document 4), a Coexistence Manager (CM) defined in IEEE Std 802.19.1-2018 (Non-Patent Document 5), and a Coexistence Manager (CxM) defined in CBRSA-TS-2001. Without being limited to these examples, an entity having a function of determining communication parameters, granting permission / authorization to use, instructing, and / or managing one or more communication devices 110 in accordance with some wireless system coexistence policy may be considered to be the information processing device 200. The information processing device 200 may have a function of determining communication parameters, granting permission / authorization to use, instructing, and / or managing the terminal 120.

[0018] As shown in Figures 2, 3, and 4, there may be a plurality of information processing devices 200. In the example of Figure 2, there are two information processing devices 200A and 200B, and information can be transmitted and received between the information processing devices 200A and 200B. In the example of Figure 3, there are three information processing devices 200A, 200B, and 200C, and information can be transmitted and received between the information processing devices 200A and 200B and between the information processing devices 200B and 200C. In the example of Figure 4, there are three information processing devices 200A, 200B, and 200C, and information can be transmitted and received between the information processing devices 200A and 200B, between the information processing devices 200B and 200C, and between the information processing devices 200C and 200A.

[0019] As described above, when there are multiple information processing devices 200, various forms of decision-making processes are possible. For example, when there are multiple information processing devices 200 and all of the information processing devices 200 follow at least one identical policy regarding frequency usage, there may be cases where the decision-making results need to be equivalent among the multiple information processing devices 200. Such information processing devices 200 may be provided with a function for synchronizing information held among the information processing devices 200 and executing an equivalent decision-making process among them, for example.

[0020] Furthermore, when there are multiple information processing devices 200 and they have different policies regarding frequency usage, mutual adjustment of decision-making results with other information processing devices may be required depending on the policy. Such an information processing device 200 may have, for example, a function for mutually adjusting, negotiating, or the like with other information processing devices regarding decision-making results. For this purpose, the information processing device 200 may also have a function for communicating with other information processing devices.

[0021] Furthermore, when there are multiple information processing devices 200 and they have different policies regarding frequency usage, depending on the policy, one information processing device (hereinafter referred to as information processing device 200A) may utilize the decision-making result of the other information processing device (hereinafter referred to as information processing device 200B) to make a decision. The information processing device 200A may have a function to share its decision-making result (and associated information, if necessary) with the information processing device 200B. The information processing device 200B may have a function to acquire the decision-making result (and associated information, if necessary) of the information processing device 200A. In this case, the information processing device 200A may be called a master information processing device, and the information processing device 200B may be called a secondary information processing device.

[0022] 5 shows an example in which an intermediate device 130 including the functions of a secondary information processing device and a communication device 110 (the communication device 110 on the right side in the figure) including the functions of a secondary information processing device are connected to an information processing device 200 that is a master information processing device. Note that there are three communication devices under the intermediate device 130. The intermediate device 130 and the communication device 110 on the right side use the functions of their respective secondary information processing devices to obtain decision-making results from the information processing device 200 and make decisions using the obtained decision-making results. For example, a decision may be made with the same content as the obtained decision-making result.

[0023] <1.1.1.1 Target Frequency Band> As described above, in the frequency band that is the target of decision-making by the information processing device 200, under the DSA system, frequency usage priorities may be pre-set and defined for the operator that uses the frequency band and a wireless system that is configured from at least one communication device 110. Typically, as shown in Fig. 6, the following three types of frequency usage priorities may be mixed, and these priorities are also called "tiers." - Incumbent Users - Licensed Secondary Users - License-Exempt Secondary Users

[0024] FIG. 6(A) illustrates a scenario in which a Tier 2 operator with a dedicated license for secondary use makes secondary use of a frequency band in which an existing Tier 1 user exists. In this scenario, priority is given to the use of radio waves by the existing Tier 1 user in the frequency band, and the operation of the existing user's wireless system is not impeded. The Tier 2 secondary user is permitted to emit radio waves from the communication device 110 within the valid range of the dedicated license and within a range that does not cause fatal interference to the existing user's wireless system. When there are multiple operators making secondary use, interference coordination between the secondary user operators may also be a condition for radio wave emission. The scenario in FIG. 6(A) corresponds to, for example, Licensed Shared Access (LSA) (Non-Patent Document 6), which was considered in Europe as a framework for sharing the 2.3 GHz band, and Dynamic Spectrum Sharing (Non-Patent Document 7), which was introduced in Japan for 2.3 GHz band mobile communication systems.

[0025] Figure 6(B) shows a scenario in which another operator (Tier 2) makes secondary use of a frequency band in which an existing user (Tier 1) exists without a dedicated license. In this case, priority is given to the use of radio waves by the existing Tier 1 user in that frequency band, and the operation of the existing user's wireless system is not impeded. Tier 2 secondary users are permitted to emit radio waves from their communication devices 110 to the extent that they do not cause fatal interference to the existing user's wireless system. In this scenario, even if there are multiple operators making secondary use, interference coordination between secondary users is not guaranteed. Furthermore, interference from other operators must generally be tolerated. The scenario in Figure 6(B) applies to TV white spaces and the 6 GHz band (Non-Patent Document 3) in which AFC is introduced.

[0026] FIG. 6(C) illustrates a hybrid scenario of FIGS. 6(A) and 6(B), in which operators with dedicated licenses for secondary use (Tier 2) and operators without dedicated licenses (Tier 3) coexist in a frequency band where existing users (Tier 1) exist, and engage in secondary use of the same band. In this scenario, priority is given to the use of radio waves by existing Tier 1 users in the frequency band, and the operation of the existing users' wireless systems is not impeded. Tier 2 secondary users are permitted to emit radio waves from their communication devices 110 within the scope of their dedicated licenses and to the extent that they do not cause fatal interference to the existing users' wireless systems. When there are multiple operators within Tier 2, interference coordination between secondary users may also be a condition for radio wave emission. Tier 2 users are given priority over Tier 3 users in radio wave use, and Tier 2 wireless systems are not impeded by Tier 3 users. Tier 3 secondary users are permitted to emit radio waves from their communication devices 110 to the extent that they do not cause fatal interference to Tier 1 and Tier 2 wireless systems. Even if there are multiple operators in Tier 3, interference coordination between Tier 3 operators is not necessarily guaranteed. In addition, Tier 3 operators must basically tolerate interference from others. The scenario in Figure 6(C) corresponds to the US 3550-3700 MHz band CBRS (Non-Patent Document 1).

[0027] The information processing device 200 typically makes decisions taking into account the tier configuration that is set and defined in advance by the system. Implementation need not be limited to the above description. For example, the number of tiers may be four or more. Also, for example, the tiers may be further subdivided into the aforementioned tier 2 and tier 3 based on different criteria. Also, for example, the tiers do not necessarily need to be set and defined in advance, but may be dynamically configured by the information processing device 200.

[0028] Hereinafter, unless otherwise specified, the terms "frequency band" and "target frequency band" refer to the frequency band that is the target of decision-making by the information processing device 200.

[0029] <1.1.2 Communication Device> The communication device 110 is a wireless device that has the function of performing wireless communication with the terminal 120 and other communication devices 110, such as a wireless base station (including a base station, a node B, an eNB, a gNB, and their evolved forms) or a wireless access point. Representative examples of wireless interfaces used in wireless communication with the terminal 120 and other communication devices 110 include standard wireless interfaces based on 4G / 5G or their advanced versions specified by 3GPP, and standard wireless interfaces based on wireless LAN specifications specified by IEEE 802.11WG. Other examples include not only any standard wireless interface but also proprietary wireless interfaces. Figure 7 shows an example in which the communication device 110 and the terminal 120 are connected via their respective wireless interfaces. The communication device 110 is connected to the management interface of the information processing device 200 via its own management interface, enabling transmission and reception of information. Communication between the communication device 110 and the information processing device 200 can be either wireless or wired. In the case of wireless communication, the frequency band to be used may be either a frequency band that is not managed by the information processing device 200 or a frequency band that is managed by the information processing device 200 .

[0030] The communication device 110 in the present disclosure has at least the following functions: A function to provide the information processing device 200 with information about the communication device 110 required for decision-making by the information processing device 200 in accordance with one or more policies regarding frequency usage A function to acquire the results of decision-making by the information processing device 200 A function to control its own radio wave emissions and to continuously emit radio waves based on the acquired results of decision-making by the information processing device 200 A function to perform wireless communication with the terminal 120 using the radio waves emitted by the above functions Note that "control of radio wave emission" here may include any processing that affects the emission of radio waves, such as starting emission, stopping emission, temporarily suspending emission, setting / changing transmission power, setting / changing frequency channels, and setting / changing other wireless parameters.

[0031] The communication device 110 in the present disclosure may have a function for acquiring information about the current location for the purpose of the above function. As an example of the function for acquiring information about the current location, any of the following is assumed: - A positioning function using GNSS (Global Navigation Satellite Service) or the like (also called an automated geolocation capability) - An external import function

[0032] The communication device 110 may further be equipped with a function required to configure a distributed antenna system (DAS) and form one cell by combining with a plurality of other communication devices 110. Also, antennas and remote radio heads (RRHs) installed for the purpose of configuring a DAS may be treated as the communication device 110. Regarding the "current location," it is desirable to treat the current location of the antenna / RRH used by the communication device 110 as the location information of the communication device 110, regardless of whether or not a DAS is configured, including in the case of an external antenna.

[0033] The communication device 110 may further include a beamforming or active antenna system function, and may have the ability to create cells or service areas for each formed beam.

[0034] In this disclosure, it is assumed that there are two different types of communication devices 110.

[0035] In the present disclosure, a communication device 110 that can access the information processing device 200 without using a wireless line using the target frequency band is referred to as a “communication device 110A.” Specifically, for example, a communication device 110 that can connect to the Internet via a wired connection can be considered a “communication device 110A.” Furthermore, even if a communication device 110 does not have a wired Internet connection function, it may be considered a “communication device 110A” if it has established a wireless line using a frequency band different from the target frequency band with another communication device 110A. Furthermore, for example, a device such as a smartphone or drone that has a sidelink communication function or a device-to-device wireless connection function typified by tethering, communicates with a base station via a frequency band different from the target frequency band via a backhaul link, and requires the target frequency band via an access link, may be considered a communication device 110A rather than a terminal 120.

[0036] In this disclosure, the communication device 110 that cannot access the information processing device 200 without using a wireless line using the target frequency band is referred to as the "communication device 110B." For example, a wireless relay device that needs to establish a backhaul link using the target frequency band can be considered the "communication device 110B." Furthermore, a device such as a smartphone equipped with a wireless network provisioning function, such as tethering, that uses frequencies requiring permission from the information processing device 200 for both the backhaul link and the access link may also be treated as the "communication device 110B." For example, a CPE-CBSD in the US CBRS corresponds to the communication device 110B in this disclosure. To access a SAS corresponding to the information processing device 200 via backhaul link communication with a BTS-CBSD corresponding to the communication device 110A, a backhaul link communication called a "Handshake procedure" is performed (see Non-Patent Document 8). The communication device 110B may be equipped with a function equivalent to this Handshake procedure for the purpose of accessing the information processing device 200.

[0037] 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 a car. Furthermore, the communication device 110 does not necessarily have to be located on the ground. For example, the communication device 110 may be provided on an object in the air or space, such as an aircraft, a drone, a helicopter, a High Altitude Platform Station (HAPS), a balloon, or a satellite. Furthermore, the communication device 110 may be provided on an object on or under the sea, such as a ship or a submarine. Typically, such a mobile communication device 110 corresponds to the communication device 110B, and secures an access path to the information processing device 200 by wirelessly communicating with the communication device 110A. Naturally, when wireless communication with the communication device 110A is performed in a frequency band outside the management scope of the information processing device 200, even a mobile communication device 110 can be treated as the communication device 110A.

[0038] In this disclosure, unless otherwise specified, the term "communication device 110" encompasses both communication device 110A and communication device 110B and may be interpreted as either one. FIG. 8 shows an example in which communication device 110A and communication device 110B are connected to the management interface of information processing device 200 via their respective management interfaces, thereby enabling transmission and reception of information. Communication device 110A and communication device 110B are connected via their respective wireless interfaces. Communication between communication device 110A and communication device 110B can be either wireless communication or wired communication. In the case of wireless communication, the frequency band used can be either a frequency band not managed by information processing device 200 or a frequency band managed by information processing device 200.

[0039] The communication device 110 may be used, operated, or managed by various operators. For example, operators related to the communication device 110 may include 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 (NHN) operator, a broadcasting operator, an enterprise, an educational institution (such as a school corporation or a local government board of education), a real estate (such as a building or condominium) manager, or an individual. The operators related to the communication device 110 are not particularly limited. The communication device 110A may be a shared facility used by multiple operators. The facilities may be installed, used, operated, and managed by different operators.

[0040] 1.1.3 Intermediate Device The intermediate device 130 is an entity having a function of communicating with the information processing device 200 on behalf of one or more communication devices 110. More specifically, the intermediate device 130 has a function of providing the information processing device 200 with information about the communication device 110 required for the information processing device 200 to make decisions in accordance with one or more policies related to frequency usage, a function of acquiring the results of decisions made by the information processing device 200, and a function of notifying the acquired results of decisions made by the information processing device 200, directly or indirectly, to the communication device 110. Examples of the intermediate device 130 include a DP (Domain Proxy) that proxies access to the SAS in the US CBRS and a Proxy that proxies access to the US 6 GHz band AFC. Typically, software and applications capable of executing processes based on the above functions are provided, but for convenience of explanation, these will also be treated as intermediate devices. Furthermore, with regard to interactions with information processing device 200, descriptions using the term "communication device 110" are also applicable to intermediate device 130 unless otherwise specified.

[0041] 1.1.4 Terminal The terminal 120 is a device that performs wireless communication using a wireless communication service provided by the communication device 110. Typically, a communication device such as a smartphone corresponds to the terminal 120, and is also referred to as a UE (User Equipment), User Terminal, User Station, Mobile Terminal, or Mobile Station. Any device equipped with wireless communication capabilities can also be considered a terminal 120. For example, a device such as a professional camera with wireless communication capabilities can also be considered a terminal 120, even if wireless communication is not its primary purpose. A broadcasting service radio station (FPU: Field Pickup Unit), which transmits television broadcast images from outside the broadcasting station (on-site) to the broadcasting station for sports broadcasts, may also have the functions necessary to function as a terminal 120. The terminal 120 does not necessarily have to be used by a person. For example, in the case of so-called MTC (Machine Type Communication), devices such as factory machinery and sensors installed in buildings may be connected to a network and function as a terminal 120. Furthermore, a device called Customer Premises Equipment (CPE), which is provided to ensure Internet connection, may also have the functions necessary to operate as the terminal 120 .

[0042] Furthermore, the terminal 120 may be provided with a relay communication function, as typified by D2D (Device-to-Device) and V2X (Vehicle-to-Everything).

[0043] 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, drone, helicopter, or satellite, may have the functions necessary for the operation of the terminal 120. Furthermore, an object on or under the sea, such as a ship or submarine, may have the functions necessary for the operation of the terminal 120.

[0044] In this disclosure, unless otherwise specified, the terminal 120 corresponds to an entity where a wireless link using a target frequency band 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 also correspond to the terminal 120, and a device that can correspond to the terminal 120, such as a smartphone, may also correspond to the communication device 110.

[0045] <1.1.5 Information Recording Device> The information recording device 300 is an entity that records one or more types of information used in decision-making performed by the information processing device 200. The information processing device 200 may need to have a function for acquiring information from multiple different information recording devices 300 depending on the type of information.

[0046] The information recording device 300 may be realized as a database that records, for example, license information related to primary system operators in the target frequency band, technical information and / or operational information related to the licensed wireless devices. A typical example of such an information recording device is the Universal Licensing System (ULS) operated by the Federal Communications Commission (FCC). Examples of information necessary for protecting the primary system include location information of the primary system receiver, information related to the receiving antenna (model, gain, height, polarization, feeder loss, etc.), passive site-related information (location, height, back-to-back antenna gain, billboard reflector size, etc.), and other communication parameters. Other information includes the out-of-band emission limit (OOBE), adjacent channel leakage ratio (ACLR), adjacent channel selectivity, fading margin, and protection ratio (PR). In countries and regions where fixed values, acquisition methods, and derivation methods are prescribed by law for the purpose of protecting primary systems, it is advisable to follow the provisions of such law.

[0047] The information recording device 300 may be realized as a database that records information about the communication device 110 that has obtained equipment authorization for radio wave emissions in the target frequency band, for example. If the terminal 120 is also a decision-making target of the information processing device 200, information about the terminal 120 that has obtained equipment authorization may be recorded in the same way. A typical example of such an information recording device is the Equipment Authorization System (EAS) managed by the FCC's Office of Engineering and Technology (OET). Generally, the following information may be recorded as information related to equipment authorization (but is not necessarily limited to these): Equipment authorization identifier (e.g., FCC ID, technical standard conformity certification number, etc.) Equipment model name Equipment class name Emission designator Operating frequency range Transmission power

[0048] The information recording device 300 is, for example, a database that records a radio wave environment map (REM). The REM is a data set that includes information about the radio wave environment in a given area. Typically, the database is constructed using frequency sensing, measurements, etc. The information processing device 200 may acquire the REM recorded in the information recording device 300 and use it for decision-making.

[0049] The information recording device 300 is, for example, a database that records a digital elevation model (DEM). This data can be used when using a model that requires information such as elevation and topography in propagation loss estimation. For example, various data, such as the digital elevation model provided by the Geospatial Information Authority of Japan (GIS) and the 3D Elevation Program (3DEP) dataset provided by the United States Geological Survey (USGS), can be selected and used depending on the country or region in which it is applied.

[0050] The information recording device 300 is, for example, a database that records 3D building data, which can be used to determine whether a path is line-of-sight or non-line-of-sight (LOS / NLOS) in propagation loss estimation.

[0051] Naturally, even if the data is not included in these examples, a database that records data that can be used for decision-making by the information processing device 200 may be treated as the information recording device 300, and the information processing device 200 may be equipped with the function of acquiring information from the database.

[0052] <1.1.6 Information Notification Device> The information notification device 400 is a system that notifies the information processing device 200 of time-varying information used in decision-making by the information processing device 200 in accordance with the state of change.

[0053] The information notification device 400 can be realized, for example, as a radio wave sensing system that detects radio waves from a primary system that uses radio waves non-periodically / non-stationarily. A typical example is the Environmental Sensing Capability (ESC) used in the U.S. CBRS. The ESC detects radio waves from a shipboard radar, which is the primary system, and notifies the SAS of the detection information. The SAS, which is an information processing device, uses the detection information to manage and control the radio wave emission of a CBRS Device (CBSD), which is a communication device.

[0054] The information notification device 400 can be realized, for example, as a portal system that manages activity information of the primary system. As a specific example, in the U.S. Citizens Broadband Radio Service (CBRS), the information notification device 400 can include a calendar-type system called the Informing Incumbent Portal or the Telecommunications Advanced Research and Dynamic Spectrum Sharing System (TARDyS3) (Non-Patent Document 9). Based on the acquired activity information, a protection area called a Dynamic Protection Area (DPA) is activated to protect the primary system. A similar method can also be used to protect the primary system using an equivalent system called Informing Incumbent Capability (IIC) (Non-Patent Document 10).

[0055] <1.1.7 Supplementary Notes> The interfaces between the entities constituting this system model may be wired or wireless. A combination of wired and wireless may also be used. For example, the interface between the information processing device 200 and the communication device 110 may be not only a wired line, but also a wireless interface that uses a frequency band other than the target frequency band. Examples of wireless interfaces that use a frequency band other than the target frequency band include wireless communication lines provided by mobile communication carriers via licensed bands and Wi-Fi communications that use license-exempt bands such as the 2.4 GHz band and the 5 GHz band.

[0056] The entities constituting this system model, except for the communication device 110, the intermediate device 130, and the terminal 120, can all take the form of either or both of physical entities and logical entities (functional blocks). For example, the information processing device 200 may have all of the functions of the information notification device 400 and the information recording device 300. Furthermore, for example, the information notification device 400 may be provided by the terminal 120 or the communication device 110 as a frequency sensing or measurement function. Furthermore, for example, the information notification device 400 and the information recording device 300 may exist separately from those existing as logical entities (functional blocks). This system model is not limited to these examples, and may be modified and applied using all conceivable combinations.

[0057] 1.2 Terminology Used in the Present Disclosure Unless otherwise specified, the term "transmission power" used in the present disclosure may be replaced with terms such as equivalent isotropic radiated power (EIRP), total radiated power (TRP), and conducted power. Furthermore, it goes without saying that the term is not limited to these and may be replaced with any term that represents transmission power.

[0058] When the present embodiment is applied to an environment other than a frequency sharing environment, the term "frequency" in the present disclosure is replaced with another term shared in the application environment. For example, it is assumed that the term "frequency" is replaced with a term such as "resource," "resource block," "resource element," "resource pool," "resource unit," "channel," "subchannel," "component carrier," "carrier," "subcarrier," "Bandwidth Part (BWP)," or another term having an equivalent or similar meaning.

[0059] As mentioned above, this embodiment is not limited to a frequency sharing environment. Generally, in a frequency sharing or secondary frequency usage scenario, an existing system using a target frequency band is called a primary system, and a secondary user is called a secondary system. However, when this embodiment is applied to a non-frequency sharing environment, these terms should be replaced with other terms. For example, a macrocell base station in a heterogeneous network (HetNet) may be called a primary system, and a small cell base station or relay station may be called a secondary system. Alternatively, a base station may be called a primary system, and a Relay UE (User Equipment) or Vehicle UE that realizes D2D or V2X within its coverage may be called a secondary system. The base station is not limited to a fixed type, and may be a portable or mobile type. In such a case, for example, the information processing device 200 of this embodiment may be provided in a core network, a base station, a relay station, a Relay UE, or the like.

[0060] <<2. Description of Procedures Assumed in This Embodiment>> Here, basic procedures that can be used when implementing this embodiment will be described. Note that up to <2.5> below, the description will be given assuming that the procedures are implemented mainly in the communication device 110A.

[0061] 2.1 Registration / Initialization Procedure The registration procedure is a procedure for registering information about communication devices 110 that intend to use a frequency band in information processing device 200. It is also called an initialization procedure. Typically, the registration procedure is performed when communication device 110 that intends to use a frequency band notifies information processing device 200 of a registration request including its own device parameters. Alternatively, the registration procedure may be performed when intermediate device 130, representing one or more communication devices 110 that intend to use a frequency band, notifies information processing device 200 of a registration request including device parameters of the one or more communication devices 110.

[0062] 2.1.1 Details of Required Parameters Device parameters refer to, for example, the following information: Information relating to the user of the communication device 110 (hereinafter referred to as user information) Information specific to the communication device 110 (hereinafter referred to as specific information) Information relating to the location of the communication device 110 (hereinafter referred to as location information) Information relating to the antenna of the communication device 110 (hereinafter referred to as antenna information) Information relating to the wireless interface of the communication device 110 (hereinafter referred to as wireless interface information) Legal information relating to the communication device 110 (hereinafter referred to as legal information) Information relating to the installer of the communication device 110 (hereinafter referred to as installer information) Information relating to the group to which the communication device 110 belongs (hereinafter referred to as group information)

[0063] Device parameters are not limited to those described above. Information other than these may also be treated as device parameters. It should be noted that device parameters do not need to be transmitted all at once, but may be transmitted in multiple batches. In other words, multiple registration requests may be transmitted for one registration procedure. In this way, one procedure or one process within a procedure may be performed in multiple batches. The same applies to the procedures described below.

[0064] User information refers to information related to the user of the communication device 110. For example, user information may include a user ID, account name, user name, user contact information, and call sign. The user ID and account name may be generated independently by the user of the communication device 110, or may be issued in advance by the information processing device 200. It is desirable to use a call sign issued by the NRA.

[0065] The user information can be used, for example, for interference resolution. As a specific example, in the frequency usage notification procedure described in <2.5> below, the information processing device 200 may determine whether to suspend use of a frequency currently in use by the communication device 110 and issue an instruction based on the suspension determination, but may still notify a frequency usage notification request for that frequency. In this case, the information processing device 200 may suspect a malfunction of the communication device 110 and contact the user contact information included in the user information to request confirmation of the behavior of the communication device 110. This example is not limited to this example, and when it is determined that the communication device 110 is operating in a manner contrary to the communication control performed by the information processing device 200, the information processing device 200 may contact the communication device 110 using the user information.

[0066] The unique information includes information that can identify the communication device 110, product information of the communication device 110, information related to the hardware or software of the communication device 110, and the like.

[0067] The information that can identify the communication device 110 may include, for example, the manufacturing number (serial number) of the communication device 110 and the ID of the communication device 110. The ID of the communication device 110 may be, for example, an ID that is uniquely assigned by the user of the communication device 110.

[0068] The product information of the communication device 110 may include, for example, an authentication ID, a product model number, information about the manufacturer, etc. An authentication ID is an ID given by a certification body in each country or region, such as an FCC ID in the United States, a CE number in Europe, or a technical standards conformity certificate (Giteki) in Japan. An ID issued by an industry group or the like based on its own certification program may also be considered an authentication ID.

[0069] Such unique information may be used, for example, as an allow list or a deny list. For example, if any information related to an active communication device 110 is included in the deny list, the information processing device 200 may instruct the communication device 110 to suspend frequency usage in the frequency usage notification procedure described in <2.5> below. Furthermore, the information processing device 200 may behave in such a way that it does not lift the suspension of usage until the communication device 110 is removed from the deny list. Furthermore, for example, the information processing device 200 may reject the registration of a communication device 110 included in the deny list. Furthermore, the information processing device 200 may perform operations such as not considering a communication device 110 corresponding to information included in the deny list in the interference calculation of the present disclosure, or only considering a communication device 110 corresponding to information included in the allow list in the interference calculation.

[0070] In this disclosure, the authentication ID may be treated as information related to transmission power. For example, information about FCC-certified equipment can be obtained from the Equipment Authorization System (EAS) database, a type of regulatory database, using an Application Programming Interface (API) (see Non-Patent Document 11). The record includes the RF transmission output power (Power Output) associated with the certification. It is stipulated that if the field "grantNoteId" in each EAS record is "EP," equivalent isotropic radiated power (EIRP) is recorded; otherwise, conducted power is recorded. Therefore, if there is transmission output power information associated with the authentication ID, not limited to an FCC ID, the authentication ID may be treated as equivalent to that information.

[0071] The information about the hardware of the communication device 110 may include, for example, transmission power class information. For example, in the US CBRS, two types of transmission power class information, Category A and Category B, are defined, and the information about the hardware of the communication device 110 that conforms to these definitions may include information about which of the two classes the device belongs to. In addition, TS36.104 and TS 38.104 of the 3GPP (3rd Generation Partnership Project) define several classes of eNodeB and gNodeB, and these definitions may also be used.

[0072] The transmission power class information can be used, for example, for interference calculation. The interference calculation can be performed by using the maximum transmission power specified for each class as the transmission power of the communication device 110.

[0073] The information about the software of the communication device 110 may include, for example, version information and build number of an execution program that describes the processing required for interaction with the information processing device 200. It may also include version information and build number of software for operating as the communication device 110.

[0074] Location information is typically information that can identify the location of the communication device 110. For example, it is coordinate information acquired by a positioning function such as the Global Positioning System (GPS), Beidou, the Quasi-Zenith Satellite System (QZSS), Galileo, or the Assisted Global Positioning System (A-GPS). Typically, the location information may include information related to latitude, longitude, height above ground / sea level, altitude, and positioning error. Alternatively, it may be location information registered in an information management device managed by the National Regulatory Authority (NRA) or its entrusted organization. Alternatively, it may be, for example, coordinates of the X-, Y-, and Z-axes with a specific geographical location as the origin. In addition to such coordinate information, an identifier indicating whether the communication device 110 is located outdoors or indoors may be assigned.

[0075] Furthermore, location uncertainty may be included in the location information. For example, the positioning accuracy information may be provided for both the horizontal plane and the vertical plane, or for either one of them. The positioning accuracy information may be used as a correction value when calculating the distance to an arbitrary point, for example. Furthermore, for example, the positioning accuracy information may also be used as area information in which the communication device 110 may be located. In this case, the positioning accuracy information may be used for processing such as identifying frequency information that can be used within the area indicated by the positioning accuracy information.

[0076] The location information may also be information indicating the area in which the communication device 110 is located. For example, information indicating an area designated by an administrative body, such as a postal code or an address, may be used. Alternatively, the area may be indicated by a set of three or more geographic coordinates. Such information indicating the area may be provided together with the coordinate information.

[0077] Furthermore, when the communication device 110 is located indoors, the location information may also include information indicating the floor of the building on which the communication device 110 is located. For example, the location information may include an identifier indicating the floor number, ground level, or basement. Furthermore, the location information may include information indicating a further enclosed space indoors, such as a room number or room name within the building.

[0078] If the communication device 110 uses an external antenna, it is preferable to use the position information of the external antenna as the position information. In other words, it is preferable to treat the external antenna as the communication device 110.

[0079] Typically, it is desirable that the positioning function be provided by the communication device 110. However, there are cases where the performance of the positioning function does not meet the required accuracy. Furthermore, even if the performance of the positioning function meets the required accuracy, depending on the installation location of the communication device 110, it may not be possible to acquire location information that meets the required accuracy. Therefore, the positioning function may be provided by a device separate from the communication device 110, and the communication device 110 may acquire location-related information from that device. The device having the positioning function may be an available existing device, or may be provided by the installer of the communication device 110. In such cases, it is desirable that the location information measured by the installer of the communication device 110 be written to the communication device 110.

[0080] The antenna information is typically information indicating the performance and configuration of an antenna provided in the communication device 110. Typically, the information may include, for example, information such as the antenna installation height, tilt angle (Downtilt), horizontal direction (Azimuth), boresight, antenna peak gain, and antenna model.

[0081] The antenna information may also include information about the beams that can be formed, such as beam width, beam pattern, and analog or digital beamforming capabilities.

[0082] The antenna information may also include information regarding the performance and configuration of MIMO (Multiple Input Multiple Output) communication. For example, information such as the number of antenna elements and the maximum number of spatial streams (or the number of MIMO layers) may be included. Furthermore, information regarding the codebook to be used and weight matrix information may also be included. Examples of weight matrix information include a unitary matrix, a ZF (Zero-Forcing) matrix, and an MMSE (Minimum Mean Square Error) matrix, which can be obtained by SVD (Singular Value Decomposition), EVD (Eigen Value Decomposition), BD (Block Diagonalization), or the like. Furthermore, if the communication device 110 has a function such as MLD (Maximum Likelihood Detection) that requires nonlinear calculations, information indicating the function may be included in the antenna information.

[0083] The antenna information may also include ZoD (Zenith of Direction, Departure). ZoD is a type of radio wave arrival angle. Note that the ZoD may not be notified from the communication device 110, but may be estimated by another communication device 110 from radio waves radiated from the antenna of the communication device 110 and notified. In this case, the communication device 110 may be a device operating as a base station or an access point, a device performing D2D communication, or a moving relay base station. The ZoD may be estimated by a radio wave arrival direction estimation technique such as MUSIC (Multiple Signal Classification) or ESPRIT (Estimation of Signal Propagation via Rotation Invariance Techniques). The ZoD may also be used by the information processing device 200 as measurement information.

[0084] The radio interface information typically refers to information indicating the radio interface technology provided by the communication device 110. For example, the radio interface information may include identifier information indicating technologies used in GSM, CDMA2000, UMTS, E-UTRA, E-UTRA NB-IoT, 5G NR, 5G NR NB-IoT, or further next-generation cellular systems. It may also include identifier information indicating LTE (Long Term Evolution) / 5G-compliant derivative technologies such as MultiFire, LTE-U (Long Term Evolution - Unlicensed), and NR-U (NR-Unlicensed). It may also include identifier information indicating standard technologies such as MAN (Metropolitan Area Network) technologies such as WiMAX and WiMAX2+, and IEEE 802.11-based wireless LANs. It may also include identifier information indicating XGP (Extended Global Platform) and sXGP (Shared XGP). It may also be identifier information for communication technologies for LPWA (Local Power, Wide Area). It may also include identifier information indicating proprietary radio technologies. The version or release number of the technical specifications that define these technologies may also be included as air interface information.

[0085] The radio interface information may also include information about frequency bands supported by the communication device 110. For example, the frequency band information may be represented by an upper limit frequency, a lower limit frequency, a center frequency, a bandwidth, a 3GPP Operating Band number, or a combination of at least two of these. Furthermore, information about one or more frequency bands may be included in the radio interface information.

[0086] The frequency band information supported by the communication device 110 may further include information indicating the capabilities of bandwidth extension technologies such as carrier aggregation (CA) and channel bonding. For example, information on bands that can be combined may be included. Regarding carrier aggregation, information on bands to be used as primary component carriers (PCCs) and secondary component carriers (SCCs) may also be included. The information may also include the number of component carriers (CC count) that can be simultaneously aggregated.

[0087] The frequency band information supported by the communication device 110 may further include information indicating a combination of frequency bands supported by dual connectivity and multi-connectivity. Information on other communication devices 110 that cooperate to provide dual connectivity and multi-connectivity may also be provided. In subsequent procedures, the information processing device 200 may make a decision on communication control disclosed in this embodiment, taking into account other communication devices 110 with which it has a cooperative relationship.

[0088] The frequency band information supported by the communication device 110 may also include information indicating frequency usage priority and tier, such as PAL and GAA.

[0089] The radio interface information may also include modulation scheme information supported by the communication device 110. For example, representative examples include information indicating primary modulation schemes such as FSK (Frequency Shift Keying), n-ary PSK (Phase Shift Keying, where n is a power of 2, such as 2, 4, or 8), and n-ary QAM (Quadrature Amplitude Modulation, where n is a power of 4, such as 4, 16, 64, 256, or 1024). The radio interface information may also include information indicating secondary modulation schemes such as OFDM (Orthogonal Frequency Division Multiplexing), Scalable OFDM, DFT-s-OFDM (DFT spread OFDM), GFDM (Generalized Frequency Division Multiplexing), and FBMC (Filter Bank Multi Carrier).

[0090] The radio interface information may also include information about error correction codes, such as capabilities of Turbo codes, Low Density Parity Check (LDPC) codes, Polar codes, erasure correction codes, and the like, as well as information about the coding rate to be applied.

[0091] Alternatively, the modulation method information and the information on the error correction code can be expressed as an MCS (Modulation and Coding Scheme) index.

[0092] The radio interface information may also include information indicating functions specific to each wireless technical specification supported by the communication device 110. For example, a typical example is Transmission Mode (TM) information defined in LTE. In addition, if a specific function has two or more modes, the radio interface information may include TM information. Furthermore, if the communication device 110 supports a function that is not required by the specification even if the technical specification does not include two or more modes, the radio interface information may also include information indicating the supported function.

[0093] The radio interface information may also include information on radio access technologies (RATs) supported by the communication device 110. For example, information indicating time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), power division multiple access (PDMA), code division multiple access (CDMA), sparse code multiple access (SCMA), interleave division multiple access (IDMA), spatial division multiple access (SDMA), carrier sense multiple access / collision avoidance (CSMA / CA), and carrier sense multiple access / collision detection (CSMA / CD) may be included. Note that TDMA, FDMA, and OFDMA are classified as orthogonal multiple access (OMA). PDMA, CDMA, SCMA, IDMA, and SDMA are classified as non-orthogonal multiple access (NOMA). A typical example of PDMA is a method realized by combining Superposition Coding (SPC) and Successive Interference Canceller (SIC). CSMA / CA and CSMA / CD are classified as opportunistic access methods.

[0094] When the radio interface information includes information indicating an opportunistic access method, the radio interface information may further include information indicating details of the access method. As a specific example, the radio interface information may include information indicating whether the access method is Frame Based Equipment (FBE) or Load Based Equipment (LBE) defined in ETSI EN 301 598.

[0095] When the radio interface information indicates an LBE, it may further include information specific to the LBE, such as a Priority Class.

[0096] The radio interface information may also include information related to duplex modes supported by the communication device 110. Representative examples include information related to methods such as frequency division duplex (FDD), time division duplex (TDD), and full duplex (FD).

[0097] When TDD is included as the radio interface information, the radio interface information may include information on the TDD frame structure used or supported by the communication device 110. Furthermore, information on the duplex mode may be included for each frequency band indicated by the frequency band information.

[0098] When the FD is included as the radio interface information, information on the interference power detection level may be included.

[0099] The radio interface information may also include information about transmit diversity techniques supported by the communication device 110. For example, space time coding (STC) may be included.

[0100] The radio interface information may also include guard band information. For example, the radio interface information may include information about a guard band size predetermined for the radio interface. Alternatively, the radio interface information may include information about a guard band size desired by the communication device 110.

[0101] Regardless of the above aspect, the radio interface information may be provided for each frequency band.

[0102] The legal information typically refers to information about regulations that the communication device 110 must comply with, as determined by radio regulatory agencies or equivalent agencies in each country or region, and certification information that the communication device 110 has acquired. The regulatory information typically includes, for example, information about upper limits on out-of-band emissions and information about the blocking characteristics of the receiver. The certification information typically includes, for example, type approval information and regulatory information that serves as the basis for obtaining certification. Examples of type approval information include an FCC ID in the United States and a technical standards compliance certificate in Japan. Examples of regulatory information include an FCC regulation number in the United States and an ETSI Harmonized Standard number in Europe.

[0103] For legal information related to numerical values, those specified in the radio interface technology specifications may be used instead. Examples of radio interface technology specifications include 3GPP TS 36.104 and TS 38.104. These specifications specify the adjacent channel leakage ratio (ACLR). Instead of the upper limit information for out-of-band emissions, the ACLR specified in the specifications may be used to derive the upper limit for out-of-band emissions. If necessary, the ACLR itself may also be used. Alternatively, the adjacent channel selectivity (ACS) may be used instead of the blocking characteristics. These may also be used together, or the adjacent channel interference ratio (ACIR) may be used. Generally, the ACIR has the following relationship with the ACLR and ACS: Although equation (1) uses a true value representation, it may be expressed in a logarithmic representation.

[0104] The installer information may include information that can identify the person who installed the communication device 110 (the installer), unique information linked to the installer, and the like. Typically, the installer information may include information about the individual who is responsible for the location information of the communication device 110, known as the Certified Professional Installer (CPI) (Non-Patent Document 12) in the U.S. CBRS. The CPI discloses a Certified Professional Installer Registration ID (CPIR-ID) and a CPI name. Furthermore, unique information linked to the CPI may include, for example, a mailing address or contact address, an email address, a telephone number, a PKI (Public Key Identifier), and the like. Other information related to the installer may also be included in the installer information as needed, without being limited to these.

[0105] The group information may include information about the communication device group to which the communication device 110 belongs. Specifically, for example, information about groups of the same or similar type as those disclosed in WINNF-SSC-0010 (Non-Patent Document 13) may be included. Also, for example, if a telecommunications carrier manages the communication devices 110 on a group-by-group basis according to its own operation policy, information about the group may be included in the group information.

[0106] The information listed up to this point may not be provided by the communication device 110 to the information processing device 200, but may be inferred by the information processing device 200 from other information provided by the communication device 110. Specifically, for example, guard band information can be inferred from radio interface information. When the radio interface used by the communication device 110 is E-UTRA or 5G NR, the guard band information can be inferred based on the E-UTRA transmission bandwidth specifications described in 3GPP TS36.104, the 5G NR transmission bandwidth specifications described in 3GPP TS38.104, and the table described in TS38.104 shown below.

[0107] In other words, it is sufficient for the information processing device 200 to acquire the information listed above; it is not necessary for the communication device 110 to provide this information to the information processing device 200. Furthermore, an intermediate device (e.g., a network manager) that bundles multiple communication devices 110 does not necessarily need to provide this information to the information processing device 200A. Providing information from the communication device 110 or an intermediate device to the information processing device 200 or 200A is merely one means of providing information in this embodiment. The information listed above is information that may be necessary for the information processing device 200 to successfully complete this procedure, and the means of providing the information does not matter. For example, WINNF-TS-0061 allows this method, calling it Multi-Step Registration.

[0108] Naturally, the information listed above can be selectively applied depending on the regulations / legal systems and technical specifications of the applicable country or region.

[0109] <2.1.1.1 Supplementary Information on Required Parameters> In some cases, it is expected that during the registration procedure, device parameters related to not only the communication device 110 but also the terminal 120 will be required to be registered in the information processing device 200. In such cases, the term "communication device" in the description given in <2.1.1> may be replaced with "terminal" or a term equivalent thereto. Furthermore, parameters specific to "terminal" that are not mentioned in <2.1.1> may also be treated as required parameters in the registration procedure. For example, the UE (User Equipment) Category defined by 3GPP may be mentioned.

[0110] <2.1.2 Details of Registration Process> As described above, the communication device 110 representing the wireless system that intends to use the frequency band generates a registration request including device parameters and notifies the information processing device 200 of the request.

[0111] Here, if the device parameters include installer information, the communication device 110 may use the installer information to perform processing such as tamper-proofing on the registration request. Furthermore, some or all of the information included in the registration request may be encrypted. Specifically, for example, a unique public key may be shared in advance between the communication device 110 and the information processing device 200, and the communication device 110 may encrypt information using a private key corresponding to the public key. Sensitive information such as location information may be encrypted, for example.

[0112] It is possible that the ID and location information of the communication device 110 are publicly available, and the information processing device 200 previously stores the IDs and location information of the main communication devices 110 present within its coverage area. In such cases, the information processing device 200 can obtain the location information from the ID of the communication device 110 that sent the registration request, so the location information does not need to be included in the registration request. It is also possible that the information processing device 200 replies with the necessary device parameters to the communication device 110 that sent the registration request, and in response, the communication device 110 sends a registration request including the device parameters necessary for registration. In this way, the information included in the registration request may vary depending on the situation.

[0113] Furthermore, if the communication device 110 is mobile, depending on the regulations of the target country or region, it is not necessary to register the location information in the information processing device 200. Therefore, to provide the location information, it is sufficient to have the necessary functions according to the regulations of the target country or region.

[0114] After receiving the registration request, the information processing device 200 performs registration processing for the communication device 110 and returns a registration response according to the processing results. If there is no missing information or abnormality required for registration, the information processing device 200 records the information in an internal or external storage device and notifies the communication device 110 of successful completion. Otherwise, it notifies the communication device 110 of a failed registration. If the registration is successful, the information processing device 200 may assign an ID to each communication device 110 and notify the communication device 110 of the ID information in the response. If the registration fails, the communication device 110 may re-notify a modified registration request. The communication device 110 may also modify the registration request and attempt to repeat the registration procedure until the registration is successful.

[0115] The registration procedure may be executed even after successful completion of registration. Specifically, for example, if the location information changes beyond a predetermined standard due to movement, accuracy improvement, or the like, the registration procedure may be executed again for the purpose of initialization. The predetermined standard is typically determined by the legal system of each country or region. For example, the U.S. TV White Space Regulations 47 CFR Part 15 Subpart H (Non-Patent Document 1) requires that Mode II personal / portable white space devices, i.e., devices using open frequencies, must re-register if their location changes by 100 meters or more.

[0116] 2.2 Available Spectrum Query Procedure The available spectrum information query procedure is a procedure in which a communication device 110 that intends to use a frequency band queries the information processing device 200 for information on available frequencies. Note that it is not necessary to perform the available frequency information query procedure. Furthermore, the intermediate device 130 that makes the query on behalf of one or more communication devices 110 that intend to use the frequency band may be the same as or different from the communication device 110 that generated the registration request. Typically, the procedure is initiated when the communication device 110 making the query notifies the information processing device 200 of a query request that includes information that can identify the communication device 110.

[0117] Here, the available frequency information typically refers to information indicating frequencies that are estimated to be available for secondary use by the communication device 110 without causing fatal interference to the primary system.

[0118] The available frequency information is determined based on, for example, a secondary use prohibited area called an Exclusion Zone. Specifically, for example, if the communication device 110 is installed in a secondary use prohibited area that is established for the purpose of protecting a primary system that uses frequency channel F1, the frequency channel F1 is not notified to the communication device 110 as an available channel.

[0119] The available frequency information can be determined, for example, by the degree of interference with the primary system. Specifically, even if a frequency channel is outside the secondary use prohibited area, if it is determined that the frequency channel will cause fatal interference with the primary system, the frequency channel may not be notified as an available channel. An example of a specific calculation method is described in <2.2.2> below.

[0120] Furthermore, as described above, there may be frequency channels that are not notified as available due to conditions other than the primary system protection requirements. Specifically, for example, in order to prevent interference that may occur between communication devices 110 in advance, a frequency channel that is being used by another communication device 110 located in the vicinity of the communication device 110 may not be notified as an available channel. In this way, available frequency information that is set in consideration of interference with other communication devices 110 may be set as, for example, "recommended use frequency information" and provided together with the available frequency information. In other words, it is desirable that the "recommended use frequency information" be a subset of the available frequency information.

[0121] Even if it would have an impact on the primary system, if the impact can be avoided by reducing the transmission power, the same frequency as that of the primary system or a nearby communication device 110 may be notified as an available channel. In such a case, the available frequency information typically includes maximum allowable transmission power information. The maximum allowable transmission power is typically expressed in EIRP. However, this does not necessarily have to be limited to this, and may be provided as a combination of conducted power and antenna gain, for example. Furthermore, the allowable peak gain of the antenna gain may be set for each spatial direction.

[0122] <2.2.1 Details of Required Parameters> Information that can identify a wireless system that is going to use a frequency band can be, for example, unique information registered during the registration procedure, the above-mentioned ID information, or the like.

[0123] The inquiry request may also include inquiry requirement information. The inquiry requirement information may include, for example, information indicating a frequency band for which availability is desired. The inquiry requirement information may also include, for example, transmission power information. The communication device 110 making the inquiry may include transmission power information when, for example, it only wants to know frequency information for which a desired transmission power can be used. The inquiry requirement information does not necessarily have to be included in the inquiry request.

[0124] Additionally, if the communication device 110 is mobile, the query requirement information may include geofence information, i.e., available frequency information may be queried anywhere within the geographic region / space indicated by the geofence information.

[0125] The information indicating the frequency band may also include information indicating the format of the available frequency information. In the IEEE 802.11 standard, a channel number is specified for each band. For example, a flag indicating whether or not availability of a channel specified in such an air interface technical specification is requested may be included. As another format, a flag indicating whether or not availability of a unit frequency range is requested rather than a specified channel may be included. If the unit frequency is 1 MHz, available frequency information is requested for each 1 MHz frequency range. When this flag is used, the desired unit frequency information may be enclosed in the flag.

[0126] The inquiry request may also include a measurement report. The measurement report includes the results of measurements performed by the communication device 110 and / or the terminal 120. Some or all of the measurement results may be represented as raw data or processed data. For example, standardized metrics such as RSRP (Reference Signal Received Power), RSSI (Reference Signal Strength Indicator), and RSRQ (Reference Signal Received Quality) may be used for the measurements.

[0127] <2.2.2 Details of Available Frequency Evaluation Process> After receiving an inquiry request, the information processing device 200 evaluates available frequencies based on the inquiry requirement information. For example, as described above, it is possible to evaluate available frequencies taking into consideration the primary system, its secondary use prohibited area, and the presence of nearby communication devices 110.

[0128] The information processing device 200 may derive the secondary use prohibited area in advance or after receiving the request, and evaluate the available frequency based on the secondary use prohibited area. For example, MaxTx(dBm) and minimum transmit power P MinTx(dBm) is defined, it is possible to determine the secondary use prohibited area by calculating the range of the separation distance between the primary system and the secondary system using the following formula: I Th(dBm)is the allowable interference power (limit value of the allowable interference power), d is the distance between a predetermined reference point and the communication device 110, and PL() (dB) is a function of propagation loss. This allows frequency availability to be determined according to the positional relationship between the primary system and the communication device 110. In addition, if the communication device 110 provides information on the transmission power or power range it wishes to use in the request, PL -1 (P Tx(dBm) -I Th(dBm) ) and compare it with the range formula to determine frequency availability.

[0129] The information processing device 200 may derive maximum allowable transmission power information at a given frequency (channel) as available frequency information. Typically, the maximum allowable transmission power information is calculated using allowable interference power information in the primary system or its protection zone, position information of a reference point for calculating the interference power level suffered by the primary system, registration information of the communication device 110, and a propagation loss estimation model. Specifically, as an example, the maximum allowable transmission power information is calculated using the following formula: Although equation (2) does not include the antenna gain of the transmitter / receiver, it may include the antenna gain of the transmitter / receiver depending on the expression method of the maximum allowable transmission power (EIRP, conducted power, etc.) and the reference point of the received power (antenna input point, antenna output point, etc.). A safety margin to compensate for fluctuations due to fading may also be included. Feeder loss may also be taken into account as necessary. Similar calculations can be made for adjacent channels by taking into account the adjacent channel leakage ratio (ACRL) and the maximum out-of-band radiation value.

[0130] Furthermore, equation (2) is written based on the assumption that a single communication device 110 is the interference source (single-station interference). For example, if it is necessary to consider the cumulative interference (aggregated interference) from multiple communication devices 110 at the same time, a correction value may be added. Specifically, for example, the correction value may be determined based on the three types of interference margin allocation methods (Fixed / Predetermined, Flexible, Flexible Minimized) disclosed in Non-Patent Document 4 (ECC Report 186).

[0131] It should be noted that, as in equation (2), the tolerable interference power information itself is not necessarily directly usable. For example, when the required signal-to-interference power ratio (SIR), SINR (Signal to Interference Plus Noise Ratio), etc. of the primary system are available, they may be converted into the tolerable interference power and used. It should be noted that such conversion processing is not limited to this processing, and may also be applied to processing of other procedures.

[0132] Although Equation (2) is expressed using logarithms, it may be converted to antilogarithms in practice. Furthermore, all parameters expressed in logarithmic notation in the present disclosure may be converted to antilogarithms as appropriate.

[0133] Furthermore, when the aforementioned transmission power information is included in the inquiry requirement information, it is possible to evaluate the available frequencies by a method other than the above-described method. Specifically, for example, assuming that the desired transmission power indicated by the transmission power information is used, if the estimated interference amount is lower than the allowable interference power in the primary system or its protection zone, the frequency channel is determined to be available and this is notified to the communication device 110.

[0134] Furthermore, for example, in the case where an area or space in which communication device 110 can use a frequency band is predetermined, similar to the REM area, available frequency information may be derived based solely on coordinates included in the location information of communication device 110 (X-axis, Y-axis, and Z-axis coordinates or latitude, longitude, and height above ground of communication device 110). Also, for example, even in the case where a lookup table that associates the location coordinates of communication device 110 with available frequency information is prepared, the available frequency information may be derived based solely on the location information of communication device 110. As such, there are various methods for determining available frequencies, and they are not limited to the examples of the present disclosure.

[0135] In addition, if the information processing device 200 has acquired information about the capabilities of bandwidth extension technologies such as carrier aggregation (CA) and channel bonding as frequency band information supported by the communication device 110, the information processing device 200 may include available combinations of these, recommended combinations, etc. in the available frequency information.

[0136] In addition, when the information processing device 200 acquires information about the combination of frequency bands supported by Dual Connectivity and Multi Connectivity as frequency band information supported by the communication device 110, the information processing device 200 may include information such as available frequencies and recommended frequencies for Dual Connectivity and Multi Connectivity in the available frequency information.

[0137] Furthermore, when providing available frequency information for the above-described bandwidth extension technology, if an imbalance in maximum allowable transmission power occurs among multiple frequency channels, the available frequency information may be provided after adjusting the maximum allowable transmission power of each frequency channel. For example, from the viewpoint of protecting the primary system, the maximum allowable transmission power of each frequency channel may be adjusted to the maximum allowable transmission power of a frequency channel with a low maximum allowable power flux density (PSD: Power Spectral Density).

[0138] The evaluation of available frequencies does not necessarily have to be performed after receiving an inquiry request. For example, the information processing device 200 may perform the evaluation independently without a query request after the above-described registration procedure has been successfully completed. In such a case, the REM or lookup table shown as an example above, or an information table similar thereto, may be created.

[0139] In addition, evaluation may also be performed on radio wave usage priority such as PAL or GAA. For example, if registered device parameters or query requirements include information on radio wave usage priority, whether frequency usage is possible may be determined based on the priority and notified. Furthermore, for example, as disclosed in Non-Patent Document 3, if a user has previously registered information (called a Cluster List in Non-Patent Document 3) on the communication device 110 that will perform high-priority usage (e.g., PAL) in the information processing device 200, evaluation may be performed based on that information.

[0140] After the evaluation of the available frequencies is completed, the information processing device 200 notifies the communication device 110 of the evaluation result.

[0141] The communication device 110 may select desired communication parameters using the evaluation results received from the information processing device 200. If a spectrum grant procedure (described later) is not adopted, the communication device 110 may start radio wave transmission using the selected desired communication parameters as communication parameters.

[0142] 2.3 Spectrum Grant Procedure The spectrum grant procedure is a procedure through which a communication device 110 that wishes to use a frequency band is granted permission for secondary use of the frequency by the information processing device 200. Typically, the procedure is initiated when the communication device 110 notifies the information processing device 200 of a spectrum grant request including information that can identify the communication device 110. Alternatively, the spectrum grant procedure may be performed when the intermediate device 130, representing one or more communication devices 110 that wish to use the frequency band, notifies the information processing device 200 of a spectrum grant request including information that can identify the one or more communication devices 110. As described above, the available frequency information inquiry procedure is not required. Therefore, the spectrum grant procedure may be performed after the available frequency information inquiry procedure or after the registration procedure. Furthermore, "spectrum use authority" may also be called a "grant."

[0143] In this embodiment, it is assumed that at least the following two types of frequency use authorization request methods can be used: a designated method; and a flexible method.

[0144] The designation method is a request method in which the communication device 110 designates desired communication parameters and requests permission to operate based on the desired communication parameters from the information processing device 200. The desired communication parameters include, but are not limited to, a desired frequency channel and maximum transmission power. For example, parameters specific to the wireless interface technology (such as modulation method and duplex mode) may be designated. Furthermore, information indicating frequency usage priority / tier, such as PAL and GAA, may also be included.

[0145] The flexible method is a request method in which the communication device 110 specifies only requirements related to communication parameters and requests the information processing device 200 to specify communication parameters that satisfy the requirements and allow secondary use. The requirements related to communication parameters include, but are not limited to, bandwidth, desired maximum transmission power, and desired minimum transmission power. For example, parameters specific to the wireless interface technology (such as modulation method and duplex mode) may be specified. Specifically, for example, one or more TDD frame structures may be selected in advance and notified.

[0146] Similar to the inquiry request, the frequency authorization request may also include a measurement report, regardless of whether it is a designated method or a flexible method. The measurement report includes the results of measurements performed by the communication device 110 and / or the terminal 120. The measurements may be represented as raw data or processed data. For example, standardized metrics such as RSRP (Reference Signal Received Power), RSSI (Reference Signal Strength Indicator), and RSRQ (Reference Signal Received Quality) may be used for the measurements.

[0147] The method information used by the communication device 110 may be registered in the information processing device 200 during the registration procedure described in <2.1>.

[0148] <2.3.1 Details of Frequency Use Authorization Granting Process> After receiving a frequency use authorization granting request, the information processing device 200 performs frequency use authorization granting process based on the frequency use authorization granting request method. For example, by using the method described in <2.2>, it is possible to perform frequency use authorization granting process taking into consideration the primary system, secondary use prohibited areas, the presence of nearby communication devices 110, etc.

[0149] When the flexible method is used, the maximum allowable transmission power information may be derived using the method described in <2.2.2>. Typically, the maximum allowable transmission power information is calculated using information on the allowable interference power in the primary system or its protection zone, location information of a reference point for calculating the interference power level suffered by the primary system, registration information of the communication device 110, and a propagation loss estimation model. Specifically, as an example, the maximum allowable transmission power information is calculated using the above formula (2).

[0150] Furthermore, as described above, equation (2) is written based on the assumption that a single communication device 110 is the interference source. For example, if it is necessary to consider the cumulative interference (aggregated interference) from multiple communication devices 110 at the same time, a correction value may be added. Specifically, the correction value may be determined based on the three types of methods (Fixed / Predetermined, Flexible, Flexible Minimized) disclosed in Non-Patent Document 4 (ECC Report 186).

[0151] The information processing device 200 can use various propagation loss estimation models in procedures for granting frequency use authorization, available frequency evaluation processing in response to available frequency information inquiry requests, etc. If a model is specified for each application, it is desirable to use the specified model. For example, Non-Patent Document 3 (WINNF-TS-0112) adopts propagation loss models such as Extended Hata (eHATA) and Irregular Terrain Model (ITM) for each application. Naturally, propagation loss models are not limited to these.

[0152] Some propagation loss estimation models require information about the radio wave propagation path. The information about the radio wave propagation path may include, for example, information indicating whether the radio wave propagation path is line of sight (LOS: Line of Sight and / or NLOS: Non Line of Sight), topographical information (e.g., undulations, elevation above sea level), and environmental information (e.g., urban, suburban, rural, open sky). When using the propagation loss estimation model, the information processing device 200 may estimate this information from the registration information of the communication device 110 and information about the primary system that have already been acquired. Alternatively, if there are pre-specified parameters, it is desirable to use those parameters.

[0153] When a propagation loss estimation model is not specified for a specific application, different models may be used as needed. For example, when estimating the interference power to other communication devices 110, a model that calculates a small loss, such as a free space loss model, may be used, but when estimating the coverage of the communication device 110, a model that calculates a large loss may be used.

[0154] Furthermore, when a specified propagation loss estimation model is used, it is possible to perform a frequency usage authorization process by evaluating an interference risk, for example. Specifically, for example, when the amount of interference estimated assuming that a desired transmission power indicated in the transmission power information is used is lower than the allowable interference power in the primary system or its protection zone, it is determined that use of the frequency channel is permissible, and this is notified to the communication device 110.

[0155] In both the designated method and the flexible method, radio wave usage priority such as PAL or GAA may also be evaluated, as with the inquiry request. For example, if the registered device parameters or inquiry requirements include information regarding radio wave usage priority, whether frequency usage is possible may be determined based on the priority and notified. Also, for example, if a user has previously registered information about a communication device 110 that will use a high priority (e.g., PAL) in the information processing device 200, evaluation may be performed based on that information. For example, information about the communication device 110 is called a Cluster List (Non-Patent Document 14).

[0156] Furthermore, in any of the above calculations, when using location information of the communication device, location uncertainty may be used to determine frequency availability by correcting the location information or coverage.

[0157] The frequency use authorization process does not necessarily have to be triggered by the reception of a frequency use authorization request. For example, the information processing device 200 may perform the frequency use authorization process independently after the above-described registration procedure is successfully completed, without a frequency use authorization request. Alternatively, the frequency use authorization process may be performed periodically, for example. In such a case, the above-described REM, a lookup table, or a similar information table may be created. This allows the permissible frequencies to be determined using only the location information, so the information processing device 200 can quickly return a response after receiving a frequency use authorization request.

[0158] 2.4 Spectrum Use Notification / Authorization / Heartbeat The spectrum use notification / authentication procedure is a procedure in which a wireless system using a frequency band notifies the information processing device 200 of the use of a frequency based on communication parameters whose use is authorized in a spectrum use authorization procedure. The communication device 110 that performs the spectrum use notification on behalf of the wireless system may be the same as or different from the communication device 110 that performed the previous procedures. Typically, the communication device 110 notifies the information processing device 200 of a notification message including information that can identify the communication device 110.

[0159] It is desirable that the frequency usage notification be performed periodically until the use of the frequency is rejected by the information processing device 200. In this case, the frequency usage notification / authentication procedure is also called a heartbeat.

[0160] After receiving the frequency usage notification, the information processing device 200 may determine whether to start or continue frequency usage (in other words, radio wave transmission at the permitted frequency). For example, one method of determination is to check frequency usage information of the primary system. Specifically, it is possible to determine whether to permit or deny the start or continuation of frequency usage (radio wave transmission at the permitted frequency) based on a change in the frequency used by the primary system, a change in the frequency usage status of a primary system that does not regularly use radio waves (for example, a U.S. CBRS shipboard radar), and the like. If the start or continuation is permitted, the communication device 110 may start or continue frequency usage (radio wave transmission at the permitted frequency).

[0161] After receiving the frequency usage notification, the information processing device 200 may instruct the communication device 110 to reconfigure the communication parameters. Typically, the reconfiguration of the communication parameters may be instructed in the information processing device 200's response to the frequency usage notification. For example, information on recommended communication parameters (hereinafter, recommended communication parameter information) may be provided. It is desirable that the communication device 110 that has been provided with the recommended communication parameter information again performs the frequency use authorization procedure described in <2.4> using the recommended communication parameter information.

[0162] <2.5 Supplementary Information on Procedures> As will be described below, the above procedures do not necessarily need to be implemented individually. For example, two different procedures may be realized by substituting a third procedure that fulfills the roles of the two different procedures. Specifically, for example, a registration request and an available frequency information inquiry request may be notified together. Also, for example, a frequency use authorization procedure and a frequency use notification may be performed together. Naturally, this is not limited to these combinations, and three or more procedures may be performed together. Furthermore, as described above, one procedure may be performed separately multiple times.

[0163] Furthermore, the term "acquire" or equivalent terms in this disclosure do not necessarily mean that the information is acquired according to the procedure described in this disclosure. For example, although it is described that the location information of the communication device 110 is used in the available frequency evaluation process, it does not necessarily mean that the information acquired in the registration procedure is used; if the location information is included in the available frequency inquiry procedure request, that location information may also be used. In other words, the acquisition procedure described in this disclosure is an example, and acquisition by other procedures is also permitted within the scope of this disclosure and within the scope of technical feasibility.

[0164] Furthermore, the information that has been described as being included in the response from the information processing device 200 to the communication device 110 may be actively notified by the information processing device 200 using a push method, if possible. As a specific example, available frequency information, recommended communication parameter information, a notification of refusal to continue radio wave transmission, and the like may be notified using a push method.

[0165] <2.6 Procedures Related to Terminals> Up to this point, the explanation has been given assuming processing mainly by the communication device 110A. However, depending on the embodiment, not only the communication device 110A but also the terminal 120 and communication device 110B may operate under the management of the information processing device 200. That is, a scenario is assumed in which communication parameters are determined by the information processing device 200. Even in such a case, it is basically possible to use the procedures described in <2.1> to <2.4>. However, unlike the communication device 110A, the terminal 120 and communication device 110B must use frequencies managed by the information processing device 200 for the backhaul link and cannot transmit radio waves independently. Therefore, it is desirable to start backhaul communication for the purpose of accessing the information processing device 200 only after detecting radio waves or an authorization signal transmitted by the communication device 110A (a communication device 110 capable of providing wireless communication services, or a master communication device 110 in a master-secondary configuration).

[0166] On the other hand, since the terminals and the communication device 110B are under the management of the information processing device 200, allowable communication parameters may be set for the terminals and the communication device 110B in order to protect the primary system. However, the information processing device 200 cannot know the location information of these devices in advance. Furthermore, these devices are likely to have mobility. In other words, their location information is dynamically updated. Depending on the legal system, if the location information changes by more than a certain amount, re-registration to the information processing device 200 may be required.

[0167] Taking into consideration the various usage patterns and operational patterns of the terminals 120 and communication devices 110, the TVWS operational pattern (Non-Patent Document 15) defined by the UK Office of Communication (Ofcom) defines the following two types of communication parameters: Generic operational parameters Specific operational parameters

[0168] Generic operational parameters are communication parameters defined in Non-Patent Document 5 as "parameters that can be used by any slave WSD located within the coverage area of ​​a predetermined master WSD (corresponding to the communication device 110)." A feature of these parameters is that they are calculated by the WSDB without using location information of the slave WSDs.

[0169] The generic operational parameters may be provided by unicast or broadcast from the communication device 110 that has already been permitted to transmit radio waves from the information processing device 200. For example, a broadcast signal such as a Contact Verification Signal (CVS) defined in Part 15 Subpart H of the FCC Rules in the United States may be used. Alternatively, the generic operational parameters may be provided by a broadcast signal specific to the wireless interface. This allows the terminal 120 and the communication device 110B to handle the generic operational parameters as communication parameters to be used for radio wave transmission for the purpose of accessing the information processing device 200.

[0170] Specific operational parameters are communication parameters defined as "parameters that can be used by a specific slave WSD (White Space Device)." In other words, they are communication parameters calculated using the device parameters of the slave WSD corresponding to the terminal 120. A feature of these parameters is that they are calculated by a WSDB (White Space Database) using the location information of the slave WSD.

[0171] The CPE-CBSD Handshake Procedure (Non-Patent Document 8) adopted by CBRS can be considered another form of terminal procedure. CPE-CBSDs do not have a wired backhaul line and access the Internet via BTS-CBSDs. Therefore, they cannot obtain permission to transmit radio waves in the CBRS band from the SAS without special regulations and procedures. The CPE-CBSD Handshake Procedure allows CPE-CBSDs to transmit radio waves at the same maximum EIRP and minimum required duty cycle as the terminal (EUD) until permission to transmit radio waves is obtained from the SAS. Accordingly, the communication device 110B sets its transmission EIRP to the terminal's maximum EIRP and communicates wirelessly with the communication device 110A at the minimum required duty cycle, thereby establishing a line for obtaining permission to transmit radio waves from the information processing device 200. After obtaining permission to transmit radio waves, the communication device can use up to the maximum EIRP specified for the communication device within the permitted range.

[0172] <2.7 Procedures occurring between information processing devices> <2.7.1 Information exchange> The information processing device 200 can exchange management information with other information processing devices 200. It is desirable that at least the following information be exchanged: Information related to the communication device 110 Area information System information to be protected

[0173] The information related to the communication device 110 includes at least registration information and communication parameter information of the communication device 110 that is operating with permission of the information processing device 200. Registration information of the communication device 110 that does not have permitted communication parameters may also be included.

[0174] The registration information of the communication device 110 typically refers to the device parameters of the communication device 110 that are registered in the information processing device 200 in the registration procedure described above. It is not necessary for all registered information to be exchanged. For example, information that may be considered personal information does not necessarily need to be exchanged. Furthermore, when exchanging the registration information of the communication device 110, the registration information may be encrypted and exchanged, or the content of the registration information may be obfuscated before being exchanged. For example, information converted into binary values ​​or information signed using a digital signature mechanism may be exchanged.

[0175] The communication parameter information of the communication device 110 typically refers to information related to the communication parameters currently being used by the communication device 110. It is desirable that the information includes at least information indicating the frequency to be used and the transmission power. Other communication parameters may also be included.

[0176] Area information typically refers to information that indicates a predetermined geographical area, and this information may include area information with various attributes in various forms.

[0177] For example, the area information may include protection area information of the communication device 110 that is a high-priority secondary system, such as the PAL Protection Area (PPA) disclosed in WINNF-TS-0112 (Non-Patent Document 14). In this case, the area information may be expressed, for example, as a set of three or more coordinates indicating a geographical location. Furthermore, for example, if multiple information processing devices 200 can reference a common external database, the area information may be expressed by a unique ID, and the actual geographical area may be referenced from the external database using that ID.

[0178] Furthermore, for example, information indicating the coverage of the communication device 110 may be included. In this case, the area information may also be expressed, for example, as a set of three or more coordinates indicating a geographical position. Furthermore, for example, assuming that the coverage is a circle centered on the geographical position of the communication device 110, the area information may also be expressed as information indicating the size of the radius. Furthermore, for example, if multiple information processing devices 200 can refer to a common external database that records area information, the information indicating the coverage may be expressed by a unique ID, and the actual coverage may be referenced from the external database using the ID.

[0179] In another aspect, the information may include information about area divisions predetermined by the government, etc. Specifically, for example, a certain area can be indicated by indicating an address. For example, license areas can also be expressed in a similar manner.

[0180] In yet another aspect, the area information does not necessarily need to represent a planar area, but may represent a three-dimensional space. For example, it may be represented using a spatial coordinate system. Furthermore, information indicating a predetermined closed space, such as the number of floors in a building, floor number, or room number, may be used.

[0181] The protected system information is information about a wireless system that is treated as a protected target, such as the incumbent tier described above. For example, situations in which this information needs to be exchanged include situations where cross-border coordination is required. It is quite conceivable that different protected targets exist in the same band between neighboring countries or regions. In such cases, the protected system information can be exchanged between information processing devices 200 belonging to different countries or regions as needed.

[0182] In another aspect, the protected system information may include information on the secondary licensee and information on the wireless system operated by the secondary licensee. A secondary licensee is specifically a lessee of a license. For example, it is assumed that the secondary licensee rents a PAL from the licensee and operates the wireless system that the secondary licensee owns. When the information processing device 200 independently manages the rental, the information on the secondary licensee and information on the wireless system operated by the secondary licensee may be exchanged with other information processing devices for the purpose of protection.

[0183] These pieces of information can be exchanged directly or indirectly between the information processing devices 200 regardless of the decision-making topology applied to the information processing devices 200 .

[0184] This information can be exchanged using various methods, some of which are shown below: ID specification method Period specification method Area specification method Dump method

[0185] The ID specification method is a method of acquiring information corresponding to an ID that is assigned in advance to identify information managed by the information processing device 200. For example, assume that a communication device 110 with ID:AAA is managed by the first information processing device 200. In this case, the second information processing device 200 issues an information acquisition request to the first information processing device 200 by specifying ID:AAA. After receiving the request, the first information processing device 200 searches for information on ID:AAA and notifies information about the communication device 110 with ID:AAA, such as registration information and communication parameter information, in a response.

[0186] The period designation method is a method in which information that satisfies predetermined conditions can be exchanged during a specified period.

[0187] The predetermined condition may be, for example, whether or not information has been updated. For example, if the request specifies acquisition of information related to the communication device 110 during a specific period, the response may include registration information of the communication device 110 that was newly registered during the specific period. Furthermore, the response may also include registration information or communication parameter information of the communication device 110 whose communication parameters have been changed during the specific period.

[0188] An example of the predetermined condition is whether or not the information has been recorded by the information processing device 200. For example, if a request specifies acquisition of information related to the communication device 110 during a specific period, the registration information or communication parameter information recorded by the information processing device 200 during that period may be notified in the response. If the information has been updated during that period, the latest information for that period may be notified. Alternatively, an update history may be notified for each piece of information.

[0189] In the area designation method, a specific area is designated, and information on the communication devices 110 belonging to that area is exchanged. For example, when a request designates acquisition of information on the communication devices 110 in a specific area, registration information or communication parameter information on the communication devices 110 installed in that area may be notified in a response.

[0190] The dump method is a method of providing all information recorded by the information processing device 200. It is desirable that at least the information related to the communication device 110 and the area information be provided by the dump method.

[0191] The above description of information exchange between information processing devices 200 is based on the pull method. That is, the response is information corresponding to parameters specified in a request, which can be realized by an HTTP GET method, for example. However, the method does not need to be limited to the pull method, and information may be actively provided to other information processing devices 200 by a push method. The push method can be realized by an HTTP POST method, for example.

[0192] 2.7.2 Command / Request Procedure The information processing devices 200 may issue commands or requests to each other. Specifically, one example is reconfiguration of communication parameters of the communication devices 110. For example, when it is determined that a first communication device 110 managed by the first information processing device 200 is receiving significant interference from a second communication device 110 managed by the second information processing device 200, the first information processing device 200 may request the second information processing device 200 to change the communication parameters of the second communication device 110.

[0193] Another example is reconfiguration of area information. For example, if an error is found in the calculation of coverage information or protection area information related to the second communication device 110 managed by the second information processing device 200, the first information processing device 200 may request the second information processing device 200 to reconfigure the area information. In addition to this, a request for reconfiguration of area information may be made for various other reasons.

[0194] 2.8 Means of Information Transmission The signaling between the entities described above can be realized through various media, and of course, the implementation is not limited to these.

[0195] <2.8.1 Signaling between Information Processing Device 200 and Communication Device 110> Notification from the communication device 110 to the information processing device 200 may be performed, for example, at the application layer. For example, it may be performed using HTTP (Hyper Text Transfer Protocol). Signaling can be performed by describing required parameters in the HTTP message body according to a predetermined format. Furthermore, when HTTP is used, notification from the information processing device 200 to the communication device 110 is also performed according to the HTTP response mechanism.

[0196] <2.8.2 Signaling Between Communication Device 110 and Terminal 120> This description will be given taking E-UTRA or 5G NR as an example. Notification from the communication device 110 to the terminal 120 may be performed using, for example, at least one of Radio Resource Control (RRC) signaling, System Information (SI), and Downlink Control Information (DCI). Also, examples of downlink physical channels include a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Broadcast Channel (PBCH), an NR-PDCCH, an NR-PDSCH, and an NR-PBCH, and at least one of these may be used.

[0197] The notification from the terminal 120 to the communication device 110 may be performed using, for example, Radio Resource Control (RRC) signaling or uplink control information (UCI), or may be performed using uplink physical channels (PUCCH: Physical Uplink Control Channel, PUSCH: Physical Uplink Shared Channel, PRACH: Physical Random Access Channel).

[0198] Signaling may be performed not only in the physical layer but also in a higher layer. For example, when performing signaling in the application layer, required parameters may be written in the HTTP message body in a predetermined format.

[0199] <2.8.3 Signaling Between Terminals 120> This description will be given taking E-UTRA or 5G NR as an example. FIG. 9 shows an example of a signaling flow assuming D2D (Device-to-Device) or V2X (Vehicle-to-Everything) communication between terminals 120 as secondary system communication. D2D or V2X communication between terminals 120 may be performed using a physical sidelink channel (PSCCH: Physical Sidelink Control Channel, PSSCH: Physical Sidelink Shared Channel, PSBCH: Physical Sidelink Broadcast Channel). The information processing device 200 calculates communication parameters (T101) and notifies the communication device 110 (T102). The information processing device 200 may determine and notify values ​​of the communication parameters, or may determine and notify conditions indicating ranges of the communication parameters, etc. The communication device 110 acquires the communication parameters and sets the communication parameters to be used by the communication device 110 itself (T103). Then, the communication device 110 determines communication parameters for the terminals 120 under its control and notifies the terminals 120 (T104). Each terminal 120 under its control acquires and sets the communication parameters for the terminal 120 (T105). Then, communication with other terminals 120 is carried out (T106).

[0200] When a frequency channel subject to frequency sharing is used in a sidelink (direct communication between terminals 120), communication parameters may be notified, acquired, or configured in association with a sidelink resource pool within the frequency channel. The resource pool is radio resources for the sidelink configured using specific frequency resources or time resources. Examples of frequency resources include resource blocks and component carriers. Examples of time resources include radio frames, subframes, slots, and mini-slots. When a resource pool is configured within a frequency channel subject to frequency sharing, the communication device 110 configures the resource pool in the terminal 120 based on at least one of RRC signaling, system information, and downlink control information. The communication device 110 also configures the resource pool and communication parameters to be applied in the sidelink in the terminal 120 based on at least one of RRC signaling, system information, and downlink control information transmitted from the communication device 110 to the terminal 120. The notification of the resource pool configuration and the notification of the communication parameters to be used in the side link may be simultaneous or separate.

[0201] <<3. Representative Embodiment of the Present Invention>> FIG. 10 shows an example system configuration including five types of entities and the connection relationships between these entities in this embodiment. This configuration example assumes a Centralized Geofencing System in which an information processing device 200 centrally manages multiple communication devices 110. The five types of entities include an information recording device 300, an information processing device 200, four communication devices 110, four terminals 120, and an intermediate device 130. The number of each entity is merely an example, and other numbers may be used. An entity other than that shown, such as the information notification device 400 of FIG. 1, may also be added. Here, the communication device 110 is assumed to be a Geofenced VLP access point. The terminal 120 is assumed to be a Geofenced VLP client device. Since the details of each entity have been described above, the configuration and operation of each entity will be described here to the extent necessary to explain the representative embodiment of the present invention.

[0202] The information recording device 300 is an entity that records or stores information about a device or system (target wireless system or primary system) that is to be protected from radio interference. The protected system has a higher priority than the communication device 110 for using the frequency band (target frequency band) assigned to the protected system. The information recording device 300 may also store information about communication devices that make secondary use of frequencies in the target frequency band.

[0203] The information processing device 200 manages information regarding the secondary use of frequencies included in a target frequency band allocated to a system to be protected. The frequencies included in the target frequency band correspond to, for example, part or all of the frequency band in the target frequency band. The information processing device 200 has an information processing function for determining, in response to a request from a subordinate communication device 110, information regarding a geographical area that can be freely used secondary by the communication device 110 as geofence information. The geographical area is a two-dimensional area (area) or a three-dimensional area (space). The geofence information includes, for example, information specifying the area available for secondary use, the frequencies available for secondary use, and the maximum transmission power that can be transmitted at the frequencies. The information processing device 200 transmits the determined geofence information to the communication device 110 directly or via the intermediate device 130. This embodiment deals with a case in which the frequencies used secondary by the communication device 110 are included in the target frequency band allocated to the system to be protected. However, this embodiment can also be applied to a case in which the frequencies to be used secondary are included in a frequency band adjacent to the target frequency band (i.e., a frequency band that interferes with the target frequency band).

[0204] The communication device 110 is an entity that performs communication by secondary use of frequencies in the target frequency band of the protected system in a secondary usable area based on the geofence information. In this embodiment, the communication device 110 has mobility. That is, the communication device 110 is capable of moving in a two-dimensional area or a three-dimensional area. The communication device 110 can be mounted on a mobile object such as an automobile, an aircraft, a drone, a helicopter, a satellite, a ship, or a submarine.

[0205] The terminal 120 is an entity that communicates with the communication device 110 using a frequency that can be used by the communication device 110 (for example, a frequency that is included in the target frequency band of the protected system and that can be used for secondary purposes). In this embodiment, the terminal 120 is assumed to have mobility. The terminal 120 is assumed to be, but is not limited to, a device that can be owned or carried by a user, such as a smartphone.

[0206] Intermediate device 130 is an entity that accesses information processing device 200 on behalf of one or more communication devices 110. For simplicity, intermediate device 130 will be omitted from the following description; however, by replacing "communication device" with "intermediate device" in the description of communication device 110, operation in which intermediate device 130 acts on behalf of communication device 110 is also possible.

[0207] [Regarding Information Processing Functions of Information Processing Device 200] The information processing function of the information processing device 200 is characterized in that it determines information about a second region (also called a geofence) to be used by the communication device 110 in the first region, based on information about the movement of the communication device 110 and information about a geographic region (first region) in which the communication device 110 desires to implement secondary frequency usage. More specifically, it determines a range in which the communication device 110 can move (a region in which the communication device 110 may be present) based on information about the movement of the communication device 110 and information about the first region in which the communication device 110 desires to implement secondary frequency usage, and determines information about a geofence (second region) based on the specified region. The first region and the second region are two-dimensional or three-dimensional geographic regions. A two-dimensional region is also called an area, and a three-dimensional region is also called a space.

[0208] (Information Regarding the First Region) Information regarding the first region includes information indicating at least a two-dimensional or three-dimensional geographical region, and may further include information regarding a frequency desired to be used (frequency-related information) as an option.

[0209] - Information indicating a geographic area The information indicating a geographic area includes at least one of the following information [1] to [3]. [1] A polygon consisting of three or more coordinates. As an example, in the case of a two-dimensional geographic area (area), the coordinates include information on longitude and latitude, and in the case of a three-dimensional geographic area (space), the coordinates also include height information. [2] A combination of a center and a radius. It is desirable to also include information indicating whether it is cylindrical or spherical. If not included, either a cylindrical or spherical shape will be treated as the default. [3] Information equivalent to an identifier indicating an area or space, such as an address or building name.

[0210] Frequency-related information The frequency-related information includes at least one of the following information [1] and [2]. [1] Frequency band information indicating the frequency channel and / or frequency range desired to be used in the geographical area. If frequency band information is not included, it is also possible to target all frequency channels and / or all frequency ranges in the target frequency band. [2] Information indicating the transmission power desired to be used in the geographical area (transmission power information). The transmission power information may be a desired transmission power value or a limited range of transmission power that is operationally acceptable.

[0211] (Information about movement) Information about the movement of the communication device 110 may include at least any of the following information [1] and [2]. [1] Information about the movement speed. Examples include the absolute speed and maximum speed of the communication device 110. [2] Information about the position. Examples include current position information and maximum speed of the communication device 110.

[0212] (Information on the Second Space) Information on the second space includes at least information indicating a two-dimensional or three-dimensional geographical area where secondary frequency usage is permitted, and may further include, as an option, information on the frequencies, etc., for which secondary frequency usage is permitted (frequency-related information). - Information indicating a geographical area Information indicating a geographical area includes at least any of the following information [1] to [3]. [1] A polygon consisting of three or more coordinates. For example, in the case of a two-dimensional geographical area (area), the coordinates include information on longitude and latitude, and in the case of a three-dimensional geographical area (space), the coordinates also include altitude information. [2] A combination of a center and a radius. It is desirable to also include information indicating whether the shape is cylindrical or spherical. If not included, either a cylindrical or spherical shape is treated as the default. [3] Information equivalent to an identifier indicating an area or space, such as an address or building name.

[0213] Frequency-related information Frequency-related information includes at least one of the following information [1] and [2]: [1] Frequency band information indicating the frequency channels and / or frequency ranges available in the geographical area; [2] Information on the maximum allowable transmission power associated with the frequency channels and / or frequency ranges (transmission power information). It is also possible to treat the geographical area as an Exclusion Zone where secondary frequency usage is prohibited by not including transmission power information or frequency band information, or by specifying the maximum allowable level as 0 mW.

[0214] 11 is a block diagram showing an example of an information processing device 200 and a communication device 110 according to this embodiment. The information processing device 200 includes a communication unit 210, a processing unit 220, an information acquisition unit 230, a notification unit 240, and a communication unit 250. The communication device 110 includes a communication unit 111, a notification unit 112, an information acquisition unit 113, a control unit 114, and a communication unit 115.

[0215] (Information processing device 200) The communication unit 210 in the information processing device 200 communicates with the information recording device 300 via wired or wireless communication. When performing wireless communication, the communication unit 210 is equipped with at least one antenna. The communication unit 210 includes a transmitting unit that transmits data or information to the information recording device 300 and a receiving unit that receives data or information from the information recording device 300.

[0216] The information acquisition section 230 in the information processing device 200 acquires information necessary for the information processing performed by the processing section 220 from at least one of the information recording device 300 and the communication device 110 .

[0217] Examples of information acquired from the communication device 110 include information related to the movement of the communication device 110 (e.g., information indicating the current location and speed) and information related to a first region in which the communication device 110 desires to make secondary use of a frequency (e.g., information indicating a geographic region in which the communication device 110 desires to make secondary use of a frequency, frequency-related information indicating a frequency and transmission power desired for secondary use, etc.). Such information may be acquired or received in the form of a request (inquiry request) for secondary use of a frequency from the communication device 110.

[0218] Examples of information acquired from the information recording device 300 include information about the system to be protected, information about the environment in which the communication device 110 moves (e.g., geographical environment such as topography), information about the environment in which the system to be protected is installed, and legal and policy information regarding radio wave use. The information about the system to be protected includes, for example, the frequency band allocated to the system to be protected (the target frequency band), the frequency (or frequency bands) actually used within the frequency band, the period (time) during which the frequency will be used, the installation location of the system to be protected, and specification information about the system to be protected (e.g., the number of antennas, their installation locations and orientations, maximum transmission power, etc.). The information about the system to be protected may further include information about the frequencies and transmission powers permitted for secondary use by other communication devices in the target frequency band, and may further include the permitted period (time).

[0219] The processing unit 220 in the information processing device 200 uses information acquired by the information acquisition unit 230 to perform information processing according to an information processing method (first to third information processing methods described later) according to this embodiment, thereby calculating or generating information regarding a geographical area (second area) in which secondary frequency usage by the communication device 110 is available. For example, the processing unit 220 determines the geographical area (second area) in which secondary frequency usage by the communication device 110 is available as a geofence. The second area (geofence) may be a part of the first area described above. Then, based on the determined second area, the processing unit 220 determines frequencies available for secondary usage by the communication device 110, allowable transmission power (e.g., maximum transmission power), and the like, and generates information regarding the second area based on the results of these determinations. The generated information regarding the second area includes, for example, information identifying the geographical area (second area) in which secondary frequency usage is available, and frequency-related information indicating frequencies available for secondary usage, allowable transmission power, and the like.

[0220] Here, the processing unit 220 determines the secondarily available frequency and the allowable transmission power, for example, so that the interference power imparted to the protected system is equal to or less than the allowable interference power (interference margin). If there is another communication device that secondarily uses the frequency, the processing unit 220 determines the secondarily available frequency and the allowable transmission power so that the sum of the interference power imparted from the other communication device and the communication device 110 is equal to or less than the interference margin. If the communication device 110 notifies the processing unit 220 of its desired frequency to be used in information related to the first region, the processing unit 220 may determine whether the desired frequency is available, and if available, may determine the desired frequency as the secondarily available frequency. If the desired frequency is not available or has not been notified, the processing unit 220 may arbitrarily determine a secondarily available frequency for the communication device 110. Regarding transmission power, if the communication device 110 notifies the processing unit 220 of its desired transmission power to be used in information related to the first region, the processing unit 220 may determine whether the desired transmission power is available, and if available, may determine the desired transmission power as the secondarily available transmission power. If the desired transmission power is not available or has not been notified, the processing unit 220 may arbitrarily determine a second available transmission power.

[0221] Notification unit 240 in information processing device 200 notifies or transmits information about the second area generated by processing unit 220 to communication device 110 (or intermediate device 130 acting on behalf of communication device 110). This information may be transmitted to communication device 110 as a response to an inquiry request from communication device 110.

[0222] Communication unit 250 in information processing device 200 communicates with communication device 110 (or intermediate device 130) via wired or wireless communication. When performing wireless communication, communication unit 250 is equipped with at least one antenna. Communication unit 250 includes a transmitting unit that transmits data or information to communication device 110 (or intermediate device 130) and a receiving unit that receives data or information from communication device 110 (or intermediate device 130).

[0223] (Communication device 110) Communication unit 111 in communication device 110 communicates with information processing device 200 (or intermediate device 130) via wired or wireless communication. When performing wireless communication, communication unit 111 is equipped with at least one antenna. Communication unit 111 includes a transmitting unit that transmits data or information to information processing device 200 and a receiving unit that receives data or information from information processing device 200.

[0224] The notification unit 112 generates a request for secondary use of the frequency (inquiry request) and transmits it to the information processing device 200 (or an intermediate device acting on behalf of the communication device 110) via the communication unit 111. The inquiry request includes information regarding the movement of the communication device 110 and information regarding a first region in which the communication device 110 desires to make secondary use of frequencies included in the frequency band allocated to the protected system (or a frequency band adjacent to the frequency band). The timing for generating and transmitting the inquiry request and the content of the generated inquiry request may be determined based on, for example, a movement schedule of the communication device 110, or may be determined based on instruction information from outside (for example, a user or an administrator).

[0225] In response to the inquiry request, the information acquisition unit 113 acquires, from the information processing device 200 (or the intermediate device 130), information about the second area in which secondary use of frequencies is possible, which is generated by the information processing device 200.

[0226] The control unit 114 controls the emission of radio waves from the communication unit 115 based on the information about the second area acquired by the information acquisition unit 113. For example, the control unit 114 detects whether the communication device 110 is present in the second area based on the location information of the communication device 110, and if the communication device 110 is present in the second area, controls the operating frequency and transmission power of the communication unit 115 according to the information about the second area. Specifically, the information about the second area includes information about frequencies and transmission power available in the second area, and when the control unit 114 detects that the communication device 110 is located in the second area, it controls the operating frequency and transmission power to values ​​indicated in the information about the second area. The control unit 114 may have a function to detect the location of the communication device 110 using a location detection function such as GPS.

[0227] Note that, when the control unit 114 detects that the communication device 110 is located in the second area, it may transmit a request for permission to use the frequency to the information processing device 200 via the notification unit 240, and may start actual use of the frequency only when it receives a notification indicating permission to use the frequency from the information processing device 200. In this case, the processing unit 220 of the information processing device 200 determines whether or not use of the frequency inquired about by the communication device 110 is permissible, for example, by calculating the amount of interference with the protected system, and determining that the use is permissible if the amount of interference is equal to or less than an allowable value. The processing unit 220 notifies the communication device 110 of the determination result of whether or not use is permissible via the notification unit 240.

[0228] The communication unit 115 in the information processing device 200 wirelessly communicates with the terminals 120 within its coverage area. The communication unit 115 includes at least one antenna. The communication unit 115 includes a transmitting unit that transmits data or information to the terminals 120 and a receiving unit that receives data or information from the terminals 120.

[0229] The control unit 114 controls or manages communication with the terminal 120 within the coverage area. The control unit 114 determines a frequency to be used by the terminal 120 within a range of frequencies determined by the information processing device 200 as available for secondary use, and wirelessly communicates with the terminal 120 at the determined frequency.

[0230] Each block of the information processing device 200 and the communication device 110 shown in FIG. 11 may be configured with a hardware circuit, software (programs, etc.), or both. The information processing device 200 and the communication device 110 may also be provided with a block not shown, such as a storage unit that stores data or information necessary for processing performed by each device. In this case, the storage unit of the information processing device 200 may store some or all of the information stored in the information recording device 300 instead of or together with the information recording device 300. The storage unit may be configured with any storage device, such as a memory device, a magnetic storage device, or an optical disk. The processing of each block of the information processing device 200 and the communication device 110 may be realized by reading a program stored in the storage unit and having a processor execute the program.

[0231] Hereinafter, several examples of the information processing method according to the present disclosure will be described.

[0232] [First Information Processing Method] Assume that the information processing device 200 performs a process of updating or registering information about an existing system (protected system) stored in the information recording device 300, such as information related to secondary use of a target frequency band, with the latest information at periodic times (update times). For example, updates are performed once every 24 hours, once every 6 hours, once every hour, once every 10 minutes, etc. This update process causes the latest information to be reflected (enabled) in the communication device 110, enabling the communication device 110 to operate in accordance with the latest information. For example, if information about a second region for the communication device 110 is generated or updated by calculation by the information processing device 200, this information is registered or updated in the next update process, enabling the communication device 110 to actually use the frequency secondary with the content of the information about the second region. More specifically, the information about the second region is updated on the communication device 110 side (the information about the second region becomes enabled) only when the communication device 110 accesses the information processing device 200 after the periodic process. In this way, basically, every time the periodic processing is performed, the information relating to the second area for the communication device 110 needs to be updated again in the information recording device 300 for the period thereafter (for example, the period up to the next update processing). Based on the assumptions described above, the details of the first information processing method will be described.

[0233] FIG. 12 is an explanatory diagram of the first information processing method. The relationship between the communication device 110 and the first area A11 is shown. The first area A11 is a three-dimensional area (space). At a certain point in time (t11), the communication device 110 is located at a current position P11, which is located outside the first area A11. Here, the first area A11 is a three-dimensional geographical area (space). Assume a situation in which the communication device 110, while located at the current position P11, desires to implement secondary frequency usage in the first area A11.

[0234] At this time, the communication device 110 transmits a request (inquiry request) to the information processing device 200 to perform secondary frequency usage in the first area A11. The inquiry request includes information about the movement of the communication device 110 and information about the first area A11 for which the communication device 110 desires secondary usage. Assume that the distance between the first area A11 and the current position P11 is d [m], and the movement speed of the communication device 110 is v [m / h]. The units of distance and speed are merely examples, and other units are also possible.

[0235] If the remaining time (predetermined time) from this time t11 until the next periodic process is Δt [h], the communication device 110 can move to the first area A11 within the remaining time until the next periodic process and start secondary frequency usage within the first area A11 if the following inequality is satisfied: v×Δt is the distance that the communication device 110 can move during Δt. "×" represents multiplication. d < v×Δt (3)

[0236] If the above inequality (3) is not satisfied, it is considered that the communication device 110 will not be able to arrive at the first area A11 by the time of the next periodic processing, and therefore there is no or little need to perform processing to calculate the second area that allows the communication device 110 to perform secondary frequency usage.

[0237] When the information processing device 200 receives an inquiry request from the communication device 110, it checks whether the above inequality (3) is satisfied. If the above inequality (3) is satisfied, the information processing device 200 performs calculations on an area (second area) in which the frequency can be used for secondary use, for example, within the first area A11, and generates information about the second area. The information processing device 200 transmits the generated information about the second area to the communication device 110. If the inequality (3) is not satisfied, the information processing device 200 rejects the inquiry request for secondary frequency use. By performing such processing, it is possible to avoid calculations of information about the second area and reduce the load associated with information processing.

[0238] Δt (predetermined time) does not necessarily have to be the remaining time until the next periodic processing. As described above, the information regarding the first area is updated on the communication device 110 side (the information regarding the first area becomes valid) only when the communication device 110 accesses the information processing device 200 after the periodic processing, so Δt may be set taking into account the access timing of the communication device 110 after the periodic processing. In other embodiments described later, although description thereof is omitted, Δt can also be set in a similar manner.

[0239] Furthermore, since inequality (3) above applies when the communication device 110 moves in a straight line (shortest distance) from the current position P11 to the first area A11, it can be applied in locations where there are no obstacles on the path of the communication device 110 (such as in the sky or on the sea). However, on the ground, the presence of buildings, roads, rivers, etc. typically prevents the communication device 110 from moving directly in the shortest distance. Therefore, when map information including roads, air routes, etc. is available, the information processing device 200 may determine the time required to move to the first area A11 by taking into account the roads and air routes that are actually available. The map information may be stored in, for example, a memory unit of the information processing device 200. The same applies to other embodiments described below.

[0240] As described above, according to the first information processing method, the information processing device 200 determines whether the communication device 110 can reach the first area A11 within a predetermined time, and if it cannot reach the first area A11, rejects the inquiry request for secondary frequency use, thereby avoiding the calculation of information related to the second area and reducing the load associated with information processing.

[0241] [Second Information Processing Method] Fig. 13 is an explanatory diagram of the second information processing method. The positional relationship between a current position P21 of the communication device 110 and a first area A21 is shown. At a certain point in time (t21), the communication device 110 is located at the current position P21, and the current position P21 is contained within the first area A21. The first area A21 is a three-dimensional area (space).

[0242] At this time, the communication device 110 transmits a request (inquiry request) to the information processing device 200 to implement secondary usage of frequencies in the first area A21. The inquiry request includes information about the movement of the communication device 110 and information about the first area A21 for which the communication device 110 desires secondary usage. The movement speed of the communication device 110 (included in the information about the movement of the communication device 110) is assumed to be v [m / h]. The unit is merely an example, and other units are also possible.

[0243] If the time from time t21 to the next periodic processing is Δt [h], the range in which the communication device 110 can move is a space within a sphere of radius L21 (movable area A22) centered on the current position P21. The length of radius L21 is v×t [m]. Therefore, the area (space) of the first area A21 outside the movable area A22 is an area where secondary use of frequencies is not actually performed or is unlikely to be performed, and performing calculations related to secondary available frequencies, etc. for that area is likely to impose a significant load.

[0244] Therefore, the information processing device 200 defines the second region as the common area between the movable region A22, which is a space within a sphere with a radius of v×t [m], and the first region A21, and performs calculations of secondary available frequencies, transmission power, etc. in the second region. By performing such processing, it is possible to avoid calculations related to a region of the first region A21 where secondary use of frequencies is not actually performed or is unlikely to be performed (for example, calculations of secondary available frequencies in the region), thereby reducing the load related to information processing.

[0245] [Third Information Processing Method] When determining a second area (geofence) in which the communication device 110 is allowed to make secondary use of a frequency, the information processing device 200 determines the geofence while also taking into consideration the mobility of the terminal 120. This describes a method of determining a geofence by applying the above-described first information processing method and second information processing method and taking into consideration the mobility of both the communication device 110 and the terminal 120. Note that the information processing device 200 does not manage the frequency usage of the terminal 120, and the frequency usage of the terminal 120 is managed by the communication device 110 (it is assumed that the communication device 110 can permit the terminal 120 within its coverage to use a frequency within a range that the communication device 110 can use).

[0246] FIG. 14 is an explanatory diagram of the third information processing method. At a certain time (t31), the communication device 110 is located at a current position P31. The current position P31 is contained within a first region, as in the case of the second information processing method. However, the first region is not shown in the figure for simplicity (see FIG. 17 , described later). As in the case of the second information processing method, when the time (predetermined time) from time t31 to the next periodic processing is Δt [h], the range in which the communication device 110 can move is a space within a sphere (first movable region A32) with a radius L31 centered on the current position P31. The length of the radius L31 is v×t [m].

[0247] The communication device 110 has a coverage C31 corresponding to the reachable range of radio waves and can communicate with a terminal 120 present within the coverage C31. The terminal 120 can basically communicate with the communication device 110 no matter where it is located as long as it is within the coverage C31. In other words, the terminal 120 can move so as to stay within the coverage while communicating with the communication device 110. In the third information processing method, a range in which the terminal 120 communicating with the communication device 110 may be present is identified as a second movable area A34 (see FIG. 15 ) according to a range in which the communication device 110 can move (a first movable area A32), and an area common to the second movable area and the first area is determined as a second area (geofence).

[0248] 15 shows an example of calculating the second movable area A34. The coverage C31'' when the communication device 110 is located at the outer edge of the range of the first movable area A32 is calculated, and the range that includes the calculated multiple coverage areas C31'' is defined as the second movable area A34.

[0249] The information processing device 200 determines an area where the second movable area A34 and the first area (not shown in FIG. 15) overlap as the second area (geofence).

[0250] FIG. 16 shows an example in which a first area A31 is added to FIG. 15. However, the notation of coverage C31'' is omitted for the sake of visibility. The first area A31 and the second movable area A34 partially overlap. This overlapping area is determined as the second area.

[0251] In this way, by determining a geofence based on the second movable area A34, it is possible to determine a geofence that takes into consideration the mobility of both the communication device 110 and the terminal 120. The information processing device 200 generates information about the second area by determining a frequency, a transmission power, and the like that can be used secondarily for the geofence (second area) determined in this way.

[0252] The coverage of the communication device 110 is preferably determined based on the maximum transmission power based on the hardware capabilities and regulatory limits of the communication device 110, and the minimum receiving sensitivity of the terminal 120. However, since calculating the coverage for a three-dimensional area (space) imposes a large computational load, a radius may be determined and a sphere or circle having that radius may be defined as the coverage. Alternatively, a shape may be defined in advance and the defined shape may be treated as the coverage.

[0253] The effects of the third information processing method will be described. The space outside the first movable area A32 and inside the second movable area A34 is defined as the outer circumferential area A35 (see FIG. 15 ). In this case, the available frequencies (secondarily available frequencies in the target frequency band) may differ between the area of ​​the first area that overlaps the first movable area A32 and the area that overlaps the outer circumferential area A35. On the other hand, it is desirable for the terminal 120 to be able to continue using the same frequency (frequency channel) with the communication device 110. Therefore, determining a common available frequency between the area of ​​the first area that overlaps the first movable area A32 and the area that overlaps the outer circumferential area A35 is considered to have beneficial effects for both the communication device 110 and the terminal 120. For example, the communication device 110 does not need to switch the frequency for the terminal 120 depending on whether the terminal 120 is located in the first movable area A32 or the outer circumferential area A35, which facilitates frequency management for the terminal 120. Furthermore, unnecessary loads can be reduced, and power consumption of the communication device 110 and the terminal 120 can be reduced.

[0254] In addition, if only the outer peripheral area A35 overlaps with the first area, it can be assumed that the communication device 110 cannot reach the first area and only the terminal 120 can reach the first area, so the information processing device 200 may reject a request from the communication device 110 to inquire about the implementation of secondary frequency usage.

[0255] 17 shows an example in which only the outer circumferential area A35 overlaps with the first area 31 A. In the situation shown in FIG. 17, the information processing device 200 may reject a request from the communication device 110 to inquire about the implementation of secondary frequency usage.

[0256] 18 is a flowchart of an example of processing of an information processing method performed by the information processing device 200. The information acquisition unit 230 receives a request for secondary use of a frequency (inquiry request) from the communication device 110 via the communication unit 250 (S101). The inquiry request includes information about the movement of the communication device 110 and information about a first region in which the communication device 110 desires secondary use of the frequency. The information acquisition unit 230 acquires information (e.g., information about the protected system) necessary for information processing performed by the processing unit 220 from the information recording device 300 (S102). The processing unit 220 determines a geographical region (second region) in which secondary use of the frequency by the communication device 110 is permitted as a geofence using the information acquired by the information acquisition unit 230, information about the movement of the communication device 110, and information about the first region in which the communication device 110 desires secondary use of the frequency, and determines a frequency that can be used secondary, an allowable transmission power (e.g., maximum transmission power), etc. (S103). The processing unit 220 generates or calculates information about the second area based on the result of the determination (S103). The notification unit 240 transmits the information about the second area generated by the processing unit 220 to the communication device 110 as a response to the inquiry request (S104).

[0257] 19 is a flowchart of an example of a communication control method performed by the communication device 110. The notification unit 112 generates a request for secondary use of a frequency (inquiry request) and transmits it to the information processing device 200 via the communication unit 111. The inquiry request includes information about the movement of the communication device 110 and information about a first region in which the communication device 110 desires to use a frequency included in a frequency band allocated to the protected system (or a frequency band adjacent to the frequency band) for secondary use (S201). The information acquisition unit 113 acquires, from the information processing device 200, information about a second region in which the frequency is available for secondary use, generated by the information processing device 200, as a response to the inquiry request (S202). The control unit 114 controls the operating frequency and transmission power of the communication unit 115 based on the information about the second region acquired by the information acquisition unit 113 and the location information of the communication device 110 (S203). As an example, when the control unit 114 detects that the communication device 110 is located in the second area, it starts using the frequency indicated in the information about the second area and controls the communication device 110 to emit radio waves at the transmission power indicated in the information.

[0258] As described above, according to this embodiment, a geofence (second area) is determined based on information about the movement of a communication device and information about a first area in which the communication device desires to implement secondary frequency usage, thereby enabling secondary frequency usage for a mobile communication device, thereby improving frequency usage efficiency.

[0259] (Other embodiments) In the configuration example shown in Figure 10, the information processing device 200 exists as a single, independent entity, but it is also possible to configure each communication device 110 to have the information processing functions that the information processing device 200 has, and to remove the information processing device 200 as a single entity.

[0260] FIG. 20 shows an example of a system configuration in which the information processing function 200'' provided in the information processing device 200 is provided in the communication device 110. The communication device 110'' is a communication device equipped with the information processing function 200'' that executes at least one of the first to third information processing methods described above. In this example, there is no intermediate device 130, but the intermediate device 130 may be present between the information recording device 300 and the communication device 110''.

[0261] FIG. 21 is a block diagram of an example of a communication device 110″ in the system configuration example of FIG. 20. The communication device 110″ includes a communication unit 111A, a processing unit 116A, an information acquisition unit 113A, a control unit 114A, and a communication unit 115A. The processing unit 116A and the information acquisition unit 113A constitute an information processing function 200″.

[0262] The communication unit 111A communicates with the information recording device 300 (or the intermediate device 130) via wired or wireless communication. When performing wireless communication, the communication unit 111A is equipped with at least one antenna. The communication unit 111A includes a transmitting unit that transmits data or information to the information recording device 300 and a receiving unit that receives data or information from the information recording device 300.

[0263] The information acquisition unit 113A acquires information necessary for the information processing performed by the processing unit 116A from the information recording device 300. Examples of the information acquired from the information recording device 300 are the same as the examples of the information acquired by the information acquisition unit 230 of the information processing device 200.

[0264] The processing unit 116A in the information processing device 200 performs information processing according to the information processing method (first to third information processing methods) according to the present embodiment, using information acquired by the information acquisition unit 113A, information related to the movement of the communication device 110'', and information related to a first area in which the communication device 110'' desires secondary use of the frequency. As an example of information processing, the processing unit 116A determines, as a geofence, a geographical area (second area) in which secondary use of the frequency by the communication device 110'' is permitted, and determines a frequency that can be used secondarily and an allowable transmission power (for example, maximum transmission power), etc. Based on the result of the determination, the processing unit 116A generates or calculates information related to the second area.

[0265] The communication unit 115A wirelessly communicates with the terminal 120 within its coverage area. The communication unit 115A includes at least one antenna. The communication unit 115A includes a transmitting unit that transmits data or information to the terminal 120 and a receiving unit that receives data or information from the terminal 120.

[0266] The control unit 114A controls the operating frequency and transmission power of the communication unit 115A based on the information about the second area acquired by the information acquisition unit 113A and the location information of the communication device 110". As an example, the information about the second area includes information about the frequency and transmission power available in the second area, and when the control unit 114A detects that the communication device 110" is located in the second area, the control unit 114A controls the operating frequency and transmission power based on the values ​​indicated in the information about the second area.

[0267] FIG. 22 is a flowchart of an example of processing of a communication control method performed by the communication device 110″. The information acquisition unit 113A acquires information necessary for information processing performed by the processing unit 116A from the information recording device 300 (S301). The processing unit 116A uses the information acquired by the information acquisition unit 113A, information related to the movement of the communication device 110″, and information related to a first area in which the communication device 110″ desires secondary use of frequencies to determine a geographical area (second area) in which secondary use of frequencies by the communication device 110″ is permitted as a geofence, and determines a frequency that can be used secondarily and an allowable transmission power (e.g., maximum transmission power), etc. (S302). The processing unit 116A generates or calculates information related to the second area based on the result of the determination (same S302). The control unit 114A controls the operating frequency and transmission power of the communication unit 115A based on the information about the second area acquired by the information acquisition unit 113A and the location information of the communication device 110'' (S303).

[0268] As described above, according to this embodiment, a geofence (second area) is determined based on information about the movement of a communication device and information about a first area in which the communication device desires to implement secondary frequency usage, thereby enabling secondary frequency usage for a mobile communication device, thereby improving frequency usage efficiency.

[0269] 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 spirit of the present disclosure. Such modifications, substitutions, omissions, etc. are also included within the scope of the present disclosure, as well as within the scope of the inventions described in the claims and their equivalents.

[0270] Furthermore, the effects of the present disclosure described in this specification are merely examples, and other effects may also be present.

[0271] The present disclosure may also be configured as follows. [Item 1] An information processing device comprising: an acquisition unit that acquires information related to the movement of a communication device that wishes to make secondary use of a frequency included in a frequency band allocated to a target wireless system or a frequency band adjacent to the frequency band, and information related to a first region in which the communication device wishes to make secondary use of the frequency; a processing unit that calculates information related to a second region in which the communication device is allowed to make secondary use of the frequency, based on the information related to the movement of the communication device and the information related to the first region; and a notification unit that notifies the communication device or an intermediate device acting on behalf of the communication device of the information related to the second region. [Item 2] The information processing device according to Item 1, wherein the processing unit identifies a range in which the communication device can move within a predetermined time based on the information related to the movement of the communication device, and calculates information related to the second region based on a region in which the identified range overlaps with the first region. [Item 3] The information processing device according to Item 2, wherein the information related to the movement of the communication device includes information related to a movement speed of the communication device. [Item 4] The information processing device according to Item 3, wherein the information related to the movement of the communication device includes information related to an environment in which the communication device moves. [Item 5] The information processing device according to any one of items 2 to 4, wherein the processing unit determines whether the communication device can reach the first area within the predetermined time, and if the communication device cannot reach the first area, does not calculate information about the second area. [Item 6] The information processing device according to any one of items 2 to 5, wherein the processing unit calculates a range in which a terminal communicating with the communication device may be present based on information about a coverage area in which the communication device can communicate and a range in which the communication device can move within the predetermined time, and calculates information about the second area based on an area in which the range in which the terminal may be present overlaps with the first area. [Item 7] The information processing device according to any one of items 2 to 6, wherein the predetermined time is the remaining time until an update time is performed at which a process of updating the information about the target wireless system is performed in an information recording device that stores information about the target wireless system.[Item 8] The information processing device of any one of items 1 to 7, wherein the information regarding the second area includes information that identifies the second area and information regarding at least the frequencies available to the communication device in the second area. [Item 9] A communication device comprising: a notification unit that notifies the information processing device or an intermediate device acting on behalf of the communication device of information regarding movement of the communication device and information regarding a first area in which the communication device desires secondary use of frequencies included in a frequency band allocated to a target wireless system or a frequency band adjacent to the frequency band; an acquisition unit that acquires information regarding the second area in which the frequencies are available for secondary use from the information processing device or the intermediate device; and a control unit that controls the frequencies used by the communication device based on the information regarding the second area. [Item 10] The communication device of item 9, wherein the information regarding the second area includes information regarding frequencies available in the second area, and the control unit starts using the frequencies when the communication device is located in the second area. [Item 11] A communication device comprising: a processing unit that calculates information about a second area in which secondary use of the frequency is possible, based on information about the movement of the communication device and information about a first area in which secondary use of frequencies included in a frequency band allocated to a target wireless system or a frequency band adjacent to the frequency band is desired; and a control unit that controls the frequency to be used, based on the information about the second area. [Item 12] The communication device according to Item 11, wherein the processing unit specifies a range in which the communication device can move within a predetermined time, based on information about the movement of the communication device, and calculates information about the second area based on an area in which the specified range overlaps with the first area. [Item 13] The communication device according to Item 12, wherein the information about the movement of the communication device includes information about a movement speed of the communication device. [Item 14] The communication device according to Item 13, wherein the information about the movement of the communication device includes information about an environment in which the communication device moves.[Item 15] The communication device according to any one of items 12 to 14, wherein the processing unit determines whether the communication device can reach the first area within the predetermined time, and if the communication device cannot reach the first area, does not calculate information about the second area. [Item 16] The communication device according to any one of items 12 to 15, wherein the processing unit calculates a range in which a terminal communicating with the communication device may be present based on information about coverage in which the communication device can communicate and the range in which the communication device can move, and calculates information about the second area based on an area in which the range in which the terminal may be present overlaps with the first area. [Item 17] The communication device according to any one of items 12 to 16, wherein the predetermined time is a period until an update time at which a process of updating the information about the target wireless system is performed in an information recording device that stores information about the target wireless system. [Item 18] The communication device according to any one of Items 11 to 17, wherein the information regarding the second area includes information for identifying the second area and information regarding at least the frequencies out of frequencies and transmission powers available to the communication device in the second area. [Item 19] An information processing method comprising: acquiring information regarding movement of a communication device that desires to make secondary use of a frequency included in a frequency band allocated to a target wireless system or a frequency band adjacent to the frequency band, and information regarding a first area in which the communication device desires secondary use of the frequency; calculating information regarding a second area in which the communication device is able to make secondary use of the frequency based on the information regarding the movement of the communication device and the information regarding the first area; and notifying the communication device or an intermediate device acting on behalf of the communication device of the information regarding the second area. [Item 20] A communication control method comprising: notifying an information processing device or an intermediate device acting on behalf of the communication device of information related to movement of the communication device and information related to a first area in which secondary use of frequencies included in a frequency band allocated to a target wireless system or a frequency band adjacent to the frequency band is desired; obtaining information related to a second area in which the frequencies are available for secondary use from the information processing device or the intermediate device; and controlling frequencies used by the communication device based on the information related to the second area.[Item 21] A communication control method comprising: calculating information about a second area in which the frequencies can be used for secondary purposes based on information about the movement of a communication device and information about a first area in which the communication device desires secondary use of frequencies included in a frequency band allocated to a target wireless system or a frequency band adjacent to the frequency band; and controlling frequencies used by the communication device based on the information about the second area.

[0272] DESCRIPTION OF SYMBOLS 110 Communication device 110″ Communication device 111 Communication unit 111A Communication unit 112 Notification unit 116A Processing unit 113 Information acquisition unit 113A Information acquisition unit 114 Control unit 114A Control unit 115 Communication unit 115A Communication unit 120 Terminal 130 Intermediate device 200 Information processing device 200″ Information processing function 200A Information processing device 200B Information processing device 200C Information processing device 210 Communication unit 220 Processing unit 230 Information acquisition unit 240 Notification unit 250 Communication unit 300 Information recording device 400 Information notification device A11, A21, A31 First area A22 Movable area A32 First movable area A34 Second movable area A35 Outer periphery area

Claims

1. An information processing device comprising: an acquisition unit that acquires information regarding the movement of a communication device that wishes to make secondary use of a frequency included in a frequency band allocated to a target wireless system or a frequency band adjacent to said frequency band, and information regarding a first region in which said communication device wishes to make secondary use of said frequency; a processing unit that calculates information regarding a second region in which said frequency can be made available for secondary use by said communication device based on the information regarding the movement of said communication device and the information regarding the first region; and a notification unit that notifies said communication device or an intermediate device acting on behalf of said communication device of the information regarding the second region.

2. The information processing device according to claim 1, wherein the processing unit identifies a range in which the communication device can move within a predetermined time based on information regarding the movement of the communication device, and calculates information regarding the second area based on an area where the identified range overlaps with the first area.

3. The information processing device according to claim 2, wherein the information relating to the movement of the communication device includes information relating to the movement speed of the communication device.

4. The information processing device according to claim 3, wherein the information relating to the movement of the communication device includes information relating to the environment in which the communication device moves.

5. The information processing device according to claim 2, wherein the processing unit determines whether the communication device can reach the first area within the predetermined time, and if the communication device cannot reach the first area, does not calculate information regarding the second area.

6. The information processing device of claim 2, wherein the processing unit calculates a range in which a terminal communicating with the communication device may exist based on information regarding the coverage in which the communication device can communicate and the range in which the communication device can move within the specified time, and calculates information regarding the second area based on an area in which the range in which the terminal may exist overlaps with the first area.

7. The information processing device according to claim 2, wherein the predetermined time is the time remaining until an update time when a process for updating the information relating to the target wireless system is performed in an information recording device that stores information relating to the target wireless system.

8. The information processing device according to claim 1, wherein the information relating to the second area includes information identifying the second area and information relating to at least the frequencies and transmission powers available to the communication device in the second area.

9. A communication device comprising: a notification unit that notifies an information processing device or an intermediate device acting on behalf of the communication device of information regarding the movement of the communication device and information regarding a first area in which secondary use of frequencies included in a frequency band allocated to a target wireless system or a frequency band adjacent to the frequency band is desired; an acquisition unit that acquires information regarding a second area in which the frequencies are available for secondary use from the information processing device or the intermediate device; and a control unit that controls the frequencies used by the communication device based on the information regarding the second area.

10. The communication device according to claim 9, wherein the information about the second area includes information about frequencies available in the second area, and the control unit starts using the frequencies when it detects that the communication device is located in the second area.

11. A communication device comprising: a processing unit that calculates information about a second area in which secondary use of the frequencies is possible, based on information about the movement of the communication device and information about a first area in which secondary use of frequencies included in a frequency band allocated to a target wireless system or a frequency band adjacent to the frequency band is desired; and a control unit that controls the frequencies to be used based on the information about the second area.

12. The communication device described in claim 11, wherein the processing unit identifies a range in which the communication device can move within a predetermined time based on information regarding the movement of the communication device, and calculates information regarding the second area based on an area where the identified range overlaps with the first area.

13. The communication device according to claim 12, wherein the information relating to the movement of the communication device includes information relating to a movement speed of the communication device.

14. The communication device according to claim 13, wherein the information relating to the movement of the communication device includes information relating to an environment in which the communication device moves.

15. The communication device according to claim 12, wherein the processing unit determines whether the communication device can reach the first region within the predetermined time, and if not, does not calculate information regarding the second region.

16. The communication device described in claim 12, wherein the processing unit calculates a range in which a terminal communicating with the communication device may exist based on information regarding the coverage area in which the communication device can communicate and the range in which the communication device can move, and calculates information regarding the second area based on an area in which the range in which the terminal may exist overlaps with the first area.

17. The communication device according to claim 12, wherein the predetermined time is a period until an update time when a process for updating the information relating to the target wireless system is performed in an information recording device that stores information relating to the target wireless system.

18. The communication device according to claim 11, wherein the information relating to the second area includes information identifying the second area and information relating to at least the frequencies and transmission powers available to the communication device in the second area.

19. An information processing method comprising: acquiring information regarding the movement of a communication device that wishes to make secondary use of a frequency included in a frequency band allocated to a target wireless system or a frequency band adjacent to said frequency band; and obtaining information regarding a first region in which said communication device wishes to make secondary use of said frequency; calculating information regarding a second region in which said communication device can make secondary use of said frequency based on the information regarding the movement of said communication device and the information regarding the first region; and notifying the information regarding the second region to said communication device or an intermediate device acting on behalf of said communication device.

20. A communication control method comprising: notifying an information processing device or an intermediate device acting on behalf of said communication device of information regarding the movement of said communication device and information regarding a first area in which secondary use of frequencies included in a frequency band allocated to a target wireless system or a frequency band adjacent to said frequency band is desired; obtaining information regarding a second area in which said frequencies are available for secondary use from said information processing device or said intermediate device; and controlling the frequencies used by said communication device based on the information regarding the second area.

21. A communication control method comprising: calculating information regarding a second area in which the frequencies can be used for secondary purposes based on information regarding the movement of a communication device and information regarding a first area in which the communication device desires secondary use of frequencies included in a frequency band allocated to a target wireless system or a frequency band adjacent to the first area; and controlling the frequencies used by the communication device based on the information regarding the second area.

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