Overlapping of communication areas

Abstract

A system and method for dynamic spectrum management are disclosed. An information processing system registers a communication device for operation in a shared frequency range. The system performs a frequency grant procedure for the communication device by accessing a database that records interference power values for a defined frequency management region. To protect a first, primary system, the system acquires the active operation area information of the first system and the coverage area information of the registered communication device. The system then determines whether to permit radio wave emission by the communication device based on a comparison between the operation area information and the coverage area information. Radio wave emission may be denied if the communication device's coverage area overlaps with the first system's active operation area, thereby preventing harmful interference.

Description

OVERLAPPING OF COMMUNICATION AREAS

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

[0002] A problem of exhaustion of radio wave resources (frequencies) that can be allocated to a wireless communication system has emerged. Therefore, as means for extracting necessary radio wave resources, a dynamic spectrum access (DSA) technology for utilizing a temporal and spatial white space in a frequency band that has been allocated to a specific wireless communication system is known.

[0003] Further, there is a growing global discussion about opening up a 4400-5000 MHz band (the band n79 of the 3rd Generation Partnership Project (3GPP) (registered trademark)) for mobile communications. In this range, allocation of a range of 4800 to 5000 MHz to a public network or a private network varies depending on a country and region. In addition, a 4400-4800 MHz band is a frequency band to be studied for international mobile telecommunications (IMT, which is a mobile communications system) specification in WRC-27 Agenda Item 1.7.

[0004] 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"Technical Conditions of Mobile Communication System in 2.3 GHz Band" in "Technical Conditions of New-Generation Mobile Communication System", Consultation No. 2038, Report of New-Generation Mobile Communication System Committee, Subcommittee on Information Communication Technology, the Information and Communication Council of MIC, 2021, April 2021, 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 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

[0005] In some countries, a range of 4800 to 5000 MHz is preferentially allocated to communications for public safety (PS) and public protection and disaster relief (PPDR).

[0006] In such a country or region, when the band is to be newly allocated to mobile communication such as the fifth generation (5G), it may be required not to disturb a communication system for the PS / PPDR (hereinafter, also referred to as PS / PPDR), that is, to satisfy a protection requirement of the PS / PPDR.

[0007] In addition, it is considered that the PS / PPDR mainly performs communication temporarily (in particular, in an emergency) and in a specific place / area. For this reason, it is not realistic to perform "static" frequency sharing based on a condition uniformly determined in all countries and regions in the range of 4800 to 5000 MHz.

[0008] As described above, the above-described DSA is known as means for allocating at least a part of a frequency band allocated to a first communication system to a second communication system, that is, as frequency sharing means.

[0009] However, in the above-described DSA, basically, a communication area of the first communication system does not overlap with a communication area of the second communication system. On the other hand, there is a possibility that a communication area of the PS / PPDR overlaps with a communication area of a mobile communication system. In this case, it is difficult to directly apply the DSA according to the related art.

[0010] As described above, even in a communication system to which the DSA according to the related art is difficult to apply, a mechanism capable of implementing frequency sharing is required. That is, a mechanism capable of applying a frequency sharing technology to a communication system to which the frequency sharing technology has not been applied so far is required.

[0011] Therefore, the present disclosure proposes a mechanism capable of applying a frequency sharing technology to a communication system to which the frequency sharing technology has not been applied so far.

[0012] It should be noted that the above-mentioned problem or purpose is only one of a plurality of problems or purposes that can be solved or achieved by a plurality of embodiments disclosed in the present specification.

[0013] A system and method for dynamic spectrum management are disclosed. An information processing system registers a communication device for operation in a shared frequency range. The system performs a frequency grant procedure for the communication device by accessing a database that records interference power values for a defined frequency management region. To protect a first, primary system, the system acquires the active operation area information of the first system and the coverage area information of the registered communication device. The system then determines whether to permit radio wave emission by the communication device based on a comparison between the operation area information and the coverage area information. Radio wave emission may be denied if the communication device's coverage area overlaps with the first system's active operation area, thereby preventing harmful interference.

[0014] Fig. 1 is a diagram illustrating a first specific example of a basic principle of an information processing system according to an embodiment of the present disclosure.Fig. 2 is a diagram illustrating a second specific example of the basic principle of the information processing system according to the embodiment of the present disclosure.Fig. 3 is a diagram illustrating the second specific example of the basic principle of the information processing system according to the embodiment of the present disclosure.Fig. 4 is a diagram illustrating the second specific example of the basic principle of the information processing system according to the embodiment of the present disclosure.Fig. 5 is a diagram illustrating a third specific example of the basic principle of the information processing system according to the embodiment of the present disclosure.Fig. 6 is a diagram illustrating the third specific example of the basic principle of the information processing system according to the embodiment of the present disclosure.Fig. 7 is a diagram illustrating a fourth specific example of a basic principle of a communication system according to the embodiment of the present disclosure.Fig. 8 is a diagram illustrating a configuration example of the entire information processing system according to the embodiment of the present disclosure.Fig. 9 is a block diagram illustrating a configuration example of an information processing device according to the embodiment of the present disclosure.Fig. 10 is a block diagram illustrating a configuration of a communication device according to the embodiment of the present disclosure.Fig. 11 is a diagram illustrating a configuration of a terminal according to the embodiment of the present disclosure.Fig. 12 is a diagram illustrating an example of division of a frequency management target according to the embodiment of the present disclosure.Fig. 13 is a diagram illustrating an example of a grid point according to the embodiment of the present disclosure.Fig. 14 is a diagram illustrating a mapping example of a second communication device according to the embodiment of the present disclosure.Fig. 15 is a diagram illustrating an example of a target region according to the embodiment of the present disclosure.Fig. 16 is a diagram for describing a shared access licence framework established by the UK.Fig. 17 is a diagram illustrating an example of a frequency range according to the embodiment of the present disclosure.Fig. 18 is a diagram for describing an example of determination processing according to the embodiment of the present disclosure.Fig. 19 is a diagram for describing another example of the determination processing according to the embodiment of the present disclosure.Fig. 20 is a diagram for describing another example of the determination processing according to the embodiment of the present disclosure.Fig. 21 is a diagram illustrating an example of a frequency resource used by the second communication device according to the embodiment of the present disclosure.Fig. 22 is a diagram illustrating another example of the frequency resource used by the second communication device according to the embodiment of the present disclosure.Fig. 23 is a sequence diagram illustrating an example of a flow of communication processing according to the embodiment of the present disclosure.Fig. 24 is a diagram illustrating a configuration example of a communication system according to another embodiment of the present disclosure.Fig. 25 is a diagram illustrating an example of an operation area according to another embodiment of the present disclosure.Fig. 26 is a sequence diagram illustrating an example of a flow of communication processing according to another embodiment of the present disclosure.

[0015] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the appended drawings. Note that, in the present specification and the drawings, components having substantially the same functional configuration are provided with the same reference signs, so that an overlapping description of these components is omitted.

[0016] In addition, in the present specification and drawings, similar components of embodiments may be distinguished by adding at least one of different alphabets or different numerals after the same reference sign. However, in a case where it is not necessary to particularly distinguish each of similar components, only the same reference sign is assigned.

[0017] Each of one or more embodiments (including examples, modified examples, and application examples) described below can be implemented independently. On the other hand, at least some of the plurality of embodiments described below may be implemented in combination with at least some of other embodiments as appropriate. The plurality of embodiments can include novel characteristics different from each other. Therefore, the plurality of embodiments can contribute to achieve or solving different purposes or problems, and can exert different effects.

[0018] <<1. Introduction>><1-1. Overview of Dynamic Spectrum Access (DSA)>First, an example of DSA according to a related art will be described. For example, in the United States, a citizens broadband radio service (CBRS) is adopted as a 3550-3700 MHz band sharing framework. In the CBRS, it is required for a spectrum access system (SAS) to protect a shipborne radar.

[0019] According to standards of the Wireless Innovation Forum, WINNF-TS-0112 and WINNF-TS-1020, the following processing is performed as a shipborne radar protection method.- It is assumed that a dynamic protection area (DPA) obtained by dividing a coastal region of the United States is set an aggregated received interference power calculation target area.- For each DPA, grants of a base station (citizens broadband radio service device (CBSD or CBRS device)) that emits radio waves in an area near the DPA are classified into two groups of Keep List and Move List based on an aggregated received interference power calculation result.- When the shipborne radar appears in a certain DPA, continuation of the radio wave emission is permitted for the grant included in the Keep List, and the radio wave emission is stopped or grant cancellation is performed for the grant included in the Move List.

[0020] Similarly to the public safety (PS) / public protection and disaster relief (PPDR) described above, the shipborne radar is also a system that uses radio waves temporarily (particularly at the time of aircraft take-off and landing) and in a specific place / area (for example, a certain DPA). Meanwhile, a place where radio waves are used is limited to a place over the sea.

[0021] In the CBRS, the CBSD is not currently used over the sea. That is, a service coverage of the CBSD and an operation area of the shipborne radar do not overlap with each other.

[0022] Meanwhile, there is a possibility that the PS / PPDR is used on land. That is, there is a possibility that a service coverage of a wireless communication system and an operation area of the PS / PPDR overlap with each other.

[0023] In addition, in the CBRS, the CBSD is managed according to a principle also referred to as all come, all served. On the other hand, in a system that shares a frequency with the PS / PPDR, there is a possibility that the frequency is licensed according to a principle also referred to as first come, first served.

[0024] A mechanism of a shipborne radar protection method (also referred to as DPA protection) is designed based on the principle of all come, all served. Therefore, it is not appropriate to use the shipborne radar protection method as a protection method for other systems (such as the PS / PPDR) as it is.

[0025] Therefore, for example, there is a demand for a method of protecting radio wave emission of a system having a possibility of overlap between an operation area and a service coverage of a wireless communication system, such as the PS / PPDR.

[0026] <1-2. Overview of Proposed Technology>An information processing device according to a proposed technology of the present disclosure includes a control unit. The information processing device can correspond to, for example, a communication management device that manages dynamic frequency sharing.

[0027] The control unit acquires a first frequency range used by a first communication device and first area information related to the first communication device. Here, the first communication device is, for example, a communication device (for example, a base station or a terminal device) included in a protection target system. The first area information can include, for example, information regarding an operation area of the first communication device.

[0028] The control unit determines whether or not to permit start or continuation of radio wave emission by a second communication device. At least a portion of a second frequency range used by the second communication device overlaps with the first frequency range, for example. That is, the second communication device is a communication device (for example, the base station) included in a system that shares at least a part of a frequency of the protection target system.

[0029] For example, the control unit determines whether or not to permit the start or continuation of the radio wave emission by the second communication device according to the first area information and second area information regarding a second communication area. The second area information can include, for example, information regarding a coverage of the second communication device and / or an area (interference area) in which the second communication device can cause interference.

[0030] As a result, for example, the information processing device can compare the operation area of the first communication device with the coverage of the second communication device and / or the interference area and determine permission for the start or continuation of the radio wave emission by the second communication device. For example, the information processing device can permit the second communication device whose coverage does not overlap with the operation area of the first communication device to start or continue the radio wave emission.

[0031] As described above, according to the proposed technology, for example, a mechanism capable of applying a frequency sharing technology to a wireless communication system whose service coverage overlaps with an operation area of a protection target system is implemented.

[0032] <<2. Example of Information Processing System>><2-1. Basic Configuration Example of Information Processing System SYS1>A system model of an information processing system SYS1 according to an embodiment will be described with reference to Fig. 1. Fig. 1 is a diagram illustrating a first specific example of a basic principle of the information processing system SYS1 according to the embodiment of the present disclosure. As illustrated in Fig. 1, the information processing system SYS1 includes the following entities.- Information processing device 200- Communication device 110- Terminal 120- Intermediate device 130- Information recording device 300- Information notification device 400

[0033] (Information Processing Device 200)The information processing device 200 is a device having a function of performing determination, use permission / grant, instruction, and / or management of communication parameters of one or more communication devices 110 according to one or more policies regarding frequency use.

[0034] The communication parameters can include, for example, one or more frequency channels and maximum transmission power associated with the frequency channel in a frequency band that is a secondary use target. In addition, the communication parameters can also include other parameters related to wireless communication.

[0035] Typically, software and applications capable of performing processing based on the above functions are deployed and operated on a cloud, and for convenience of description, the software and applications are also treated as the information processing device 200.

[0036] The policies described above can include, for example, a policy related to authorization of secondary use of a band in a predetermined frequency band. Examples of the information processing device 200 implemented according to the above policy can include the following devices.- TV white space database (TVWSDB) that manages TV white space (see, for example, NPL 1)- Geolocation database (GLDB)- Spectrum access system (SAS) that manages 3550-3700 MHz band citizens broadband radio service (CBRS) (see, for example, NPL 2) in United States;- Automated frequency coordination (AFC) that manages 6 GHz band in United States and Canada (see, for example, NPL 3)

[0037] The present disclosure is not limited to the above example, and an entity having a predetermined function may be regarded as the information processing device 200 according to a certain policy related to the authorization of secondary use of a band in a predetermined frequency band. Examples of the predetermined function include a function of performing determination, notification, use permission / grant, instruction, and / or management of the communication parameters of one or more communication devices 110.

[0038] The information processing device 200 may have a function of performing determination, notification, use permission / grant, instruction, and / or management of the communication parameters for the terminal 120.

[0039] The policies described above can include, for example, a policy of coexistence between wireless systems in a predetermined frequency band. The coexistence between wireless systems typically indicates a state in which compatibility at the time of identical frequency sharing and / or adjacent frequency use between different types / similar types of wireless systems having the same frequency use priority (primary, secondary, or the like) as described below is achieved.

[0040] Examples of the information processing device 200 implemented according to the above policy include the following devices.- Spectrum coordinator (SC) defined in European Telecommunications Standards Institute (ETSI) EN 303 387 (see, for example, NPL 4).- Coexistence manager (CM) defined by IEEE Std 802.19.1-2018 (see, for example, NPL 5)　- Coexistence manager (CxM) defined in CBRSA-TS-2001

[0041] The present disclosure is not limited to the above example, and an entity having a function of performing determination, use permission / grant, instruction, and / or management of the communication parameters of one or more communication devices 110 according to a certain policy of the coexistence between wireless systems may be regarded as the information processing device 200. The information processing device 200 may have a function of performing determination, notification, use permission / grant, instruction, and / or management of the communication parameters for the terminal 120.

[0042] In a case where there are a plurality of information processing devices 200 and all of the information processing devices 200 follow at least one of the same policies regarding frequency use, it may be necessary that the plurality of information processing devices 200 have equivalent decision making results. For example, such information processing devices 200 may have a function of synchronizing held information between the information processing devices 200 and performing an equivalent decision making process in each of the information processing devices 200.

[0043] In a case where there are a plurality of information processing devices 200 and the policies regarding frequency use included therein are different from each other, mutual adjustment of the decision making result with another information processing device 200E may be required depending on the policy. Such an information processing device 200 may have, for example, a function of performing the mutual adjustment of the decision making result, negotiation, and the like with another information processing device 200E. Furthermore, for this purpose, the information processing device 200 may have a function of communicating with another information processing device 200E.

[0044] In a case where there are a plurality of information processing devices 200 and the policies regarding frequency use included therein are different from each other, a decision making result of one information processing device 200-1 may be used for decision making of another information processing device 200-2. The information processing device 200-1 may have a function of sharing the decision making result thereof (and associated information as necessary) with the information processing device 200-2. The information processing device 200-2 may have a function of acquiring the decision making result (and the associated information as necessary) of the information processing device 200-1.

[0045] (Target Frequency Band)The frequency use priority according to the embodiment will be described with reference to Figs. 2 to 4. Figs. 2 to 4 are diagrams illustrating a second specific example of the basic principle of the information processing system SYS1 according to the embodiment of the present disclosure.

[0046] For a frequency band that is a decision making target of the information processing device 200, as described above, the frequency use priority may be configured and defined in advance in the wireless communication system including an operator using the frequency band and at least one communication device 110 according to a DSA framework.

[0047] Typically, as illustrated in Figs. 2 to 4, the following three types of frequency use priorities may be mixed. The priority is also referred to as "tier". In addition, hereinafter, the priority may be referred to as a second priority.- Incumbent users- Licensed secondary users- License-exempt secondary users

[0048] In Fig. 2, for example, in a frequency band with the incumbent user (tier 1), another licensed operator (tier 2) for secondary use performs secondary use of the frequency band. At this time, in the frequency band described above, radio wave usage of the incumbent user of tier 1 is prioritized, and an operation of the wireless communication system of the incumbent user is not hindered.

[0049] For the secondary user of tier 2, the communication device 110 is allowed to emit radio waves within a valid range of the license such that no fatal interference is caused to the wireless communication system of the incumbent user. In a case where there are a plurality of operators that perform the secondary use, interference coordination between the operators that perform the secondary use may also be a condition for the radio wave emission.

[0050] As the example of Fig. 2, for example, a licensed shared access (LSA) (see, for example, NPL 6) studied as a 2.3 GHz band sharing framework in Europe is applicable. Furthermore, as the example of Fig. 2, for example, dynamic frequency sharing (see, for example, NPL 7) introduced for a 2.3 GHz band mobile communication system in Japan is applicable.

[0051] In Fig. 3, for example, in a frequency band with the incumbent user (tier 1), another operator (tier 2) performs secondary use of the same band without the license. At this time, in the frequency band described above, radio wave usage of the incumbent user of tier 1 is prioritized, and an operation of the wireless communication system of the incumbent user is not hindered.

[0052] For the secondary user of tier 2, the communication device 110 is allowed to emit radio waves such that no fatal interference is caused to the wireless communication system of the incumbent user. In the above example, even in a case where there are a plurality of operators that perform the secondary use, interference coordination between the operators that perform the secondary use is not guaranteed. In addition, interference from others basically has to be tolerated.

[0053] The example of Fig. 3 corresponds to the TV white space or the 6 GHz band (see, for example, NPL 3) in which the AFC is introduced.

[0054] In Fig. 4, for example, in a frequency band with the incumbent user (tier 1), a licensed operator (tier 2) for secondary use and an unlicensed operator (tier 3) are mixed to perform secondary use of the same band. That is, Fig. 4 illustrates a hybrid example of Figs. 2 and 3.

[0055] At this time, in the frequency band described above, radio wave usage of the incumbent user of tier 1 is prioritized, and an operation of the wireless system of the incumbent user is not hindered. For the secondary user of tier 2, the communication device 110 is allowed to emit radio waves within a valid range of the license such that no fatal interference is caused to the wireless system of the incumbent user. In a case where there are a plurality of operators in tier 2, interference coordination between the operators that perform the secondary use may also be a condition for the radio wave emission.

[0056] Radio wave usage of tier 2 is prioritized over tier 3, and the wireless communication system of tier 2 is not hindered by tier 3. The secondary user of tier 3 is allowed to perform the radio wave emission by the communication device 110 such that no fatal interference is caused to the wireless communication systems of tier 1 and tier 2. Even in a case where there are a plurality of operators in tier 3, interference coordination between the operators of tier 3 is not necessarily guaranteed. In addition, the operators of tier 3 basically have to tolerate interference from others.

[0057] The example of Fig. 4 corresponds to a 3550-3700 MHz band CBRS (see, for example, NPL 1) in the United States.

[0058] Typically, the information processing device 200 performs decision making in consideration of a configuration of the above tier configured and defined in advance in terms of framework. It is not necessary to be limited to the above description content at the time of execution. For example, the number of tiers may be four or more. In addition, for example, as the tiers, tiers obtained by further subdividing tier 2 and tier 3 described above based on another standard may be used. Furthermore, for example, the tier is not necessarily configured / defined in advance, and may be dynamically configured by the information processing device 200.

[0059] Hereinafter, unless otherwise specified, the terms "frequency band" and "target frequency band" refer to a frequency band that is the decision making target of the information processing device 200.

[0060] (Communication Device 110)The communication device 110 is a wireless device having a function of providing a wireless communication service to the terminal 120 and another communication device 110E. Examples of the communication device 110 include a wireless base station (base station, node B, eNB, gNB, or evolution forms thereof) and a radio access point.

[0061] The fourth generation (4G) / fifth generation (5G) defined by the 3rd Generation Partnership Project (3GPP) (registered trademark) can be included as a representative example of a wireless interface used in the wireless communication service with the terminal 120 and another communication device 110E. Alternatively, as representative examples of the wireless interface, an enhanced standard wireless interface and a standard wireless interface based on a wireless LAN specification defined by IEEE 802.11WG can be included. As representative examples of the wireless interface, not only all standard wireless interfaces but also a unique (proprietary) wireless interface can be included.

[0062] The communication device 110 according to the embodiment has at least the following functions.- A function of providing, to the information processing device 200, information regarding the communication device 110 required for decision making performed by the information processing device 200 according to one or more policies regarding frequency use- A function of acquiring a decision making result of the information processing device 200- A function of controlling the radio wave emission thereof and continuously emitting the radio waves based on the acquired decision making result of the information processing device 200- A function of performing wireless communication with the terminal 120 by using the radio waves emitted by the above function

[0063] "Controlling the radio wave emission" here can include any processing that affects the radio wave emission, such as start of the emission, stop of the emission, suspension of the emission, configuration / change of the transmission power, configuration / change of the frequency channel, and configuration / change of other wireless parameters.

[0064] The communication device 110 according to the embodiment may have a function of acquiring information regarding a current location for the purpose of the above function. One of the following functions is assumed as an example of the function of acquiring the information regarding the current location.- A positioning function (also referred to as automated geolocation capability) utilizing a global navigation satellite service (GNSS) or the like- A function of importing the information from the outside

[0065] The communication device 110 may further have functions necessary for forming one cell by configuring a distributed antenna system (DAS) by being combined with a plurality of other communication devices 110E. In addition, an antenna or a remote radio head (RRH) installed for the purpose of the configuration of the DAS may be treated as the communication device 110. As for the above "current location", regardless of the presence or absence of the configuration of the DAS, it is desirable to treat a current location of the antenna / RRH used by the communication device 110 as location information of the communication device 110 even in a case of an external antenna.

[0066] The communication device 110 may further have a function of beamforming or an active antenna system, and may have a function of constructing the cell or a service area for each beam to be formed.

[0067] In the embodiment, it is assumed that there are two different types of communication devices 110. In the embodiment, the communication device 110 that can access the information processing device 200 without using a wireless link using the target frequency band may be referred to as a communication device 110a.

[0068] Specifically, for example, the communication device 110 capable of wired Internet connection can be regarded as the communication device 110a.

[0069] In addition, for example, even in a case where the communication device 110 does not have the wired Internet connection function, if a wireless link using a frequency band different from the target frequency band is constructed between the communication device 110 and another communication device 110E, the communication device 110 may be regarded as the communication device 110a.

[0070] Furthermore, for example, equipment such as a smartphone or a drone which has an inter-equipment wireless connection function represented by a sidelink communication function or tethering and of which a backhaul link performs communication with the base station in a frequency band different from the target frequency band, and an access link requires the target frequency band may be regarded as the communication device 110a instead of the terminal 120.

[0071] In the embodiment, the communication device 110 that cannot access the information processing device 200 without using the wireless link using the target frequency band may be referred to as a communication device 110b. For example, a wireless relay device that needs to construct the backhaul link using the target frequency band can be regarded as the communication device 110b.

[0072] Furthermore, for example, a device that has a wireless network provision function represented by tethering and uses a frequency that requires permission of the information processing device 200 for both the backhaul link and the access link may be treated as the communication device 110b. Examples of such a device include a smartphone.

[0073] For example, a customer premises equipment (CPE)-CBSD in the CBRS of the United States corresponds to the communication device 110b according to the embodiment. Backhaul link communication called a handshake procedure is performed for the purpose of accessing the SAS corresponding to the information processing device 200 via backhaul link communication performed with a base transceiver station (BTS)-CBSD corresponding to the communication device 110a (see, for example, NPL 8). The communication device 110b may have a function corresponding to such a handshake procedure for the purpose of accessing the information processing device 200.

[0074] The communication device 110 is not necessarily fixedly installed. For example, the communication device 110 may be installed in a moving object such as an automobile. Further, the communication device 110 does not necessarily need to exist on the ground. For example, the communication device 110 may be included in an object existing 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, for example, the communication device 110 may be included in an object existing over the sea or under the sea, such as a ship or a submarine. Typically, the mobile communication device 110 as described above corresponds to the communication device 110b and performs the wireless communication with the communication device 110a to secure an access path to the information processing device 200. It is a matter of course that, in a case where the wireless communication is performed with the communication device 110a in a frequency band not to be managed by the information processing device 200, even the mobile communication device 110 can be treated as the communication device 110a.

[0075] In the embodiment, unless otherwise specified, the description of the communication device 110 includes meanings of both the communication device 110a and the communication device 110b, and may be replaced with any one of the communication device 110a and the communication device 110b.

[0076] The communication device 110 can be used, operated, or managed by various operators. For example, the following operators and the like can be assumed as the operators related to the communication device 110.- Mobile network operator (MNO)- Mobile virtual network operator (MVNO)- Mobile network enabler (MNE)- Mobile virtual network enabler (MVNE)- Shared facility operator- Neutral host network (NHN) operator- Broadcasting operator- Enterprise- Education institutions (incorporated schools, municipal education boards, or the like)　- Real estate (buildings, apartments, or the like) manager　- Individuals

[0077] The operators related to the communication device 110 are not particularly limited to the above example. Furthermore, the communication device 110a may be a shared facility used by a plurality of operators. In addition, the operators that perform installation, use, operation, and management of the facility may be different from each other.

[0078] (Intermediate Device 130)The intermediate device 130 is an entity having a function of performing communication 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, to the information processing device 200, the information regarding the communication device 110 required for decision making performed by the information processing device 200 according to one or more policies regarding frequency use. Furthermore, the intermediate device 130 has a function of acquiring the decision making result of the information processing device 200. The intermediate device 130 has a function of directly or indirectly notifying the communication device 110 of the acquired decision making result of the information processing device 200.

[0079] Examples of the intermediate device 130 include a domain proxy (DP) that acts as an access proxy to the SAS in the CBRS of the United States and a proxy that acts as an access proxy to the AFC of the 6 GHz band of the United States. Typically, software and applications capable of performing processing based on the above functions are provided, and for convenience of description, the software and applications are also treated as the intermediate device 130. Furthermore, the description content in which the term "communication device 110" is used regarding interaction with the information processing device 200 is also applicable to the intermediate device 130 unless otherwise specified.

[0080] (Terminal 120)The terminal 120 is a device that performs the wireless communication by the wireless communication service provided by the communication device 110. Typically, communication equipment such as a smartphone corresponds to the terminal 120. The terminal 120 is also referred to as, for example, a user equipment (UE), a user terminal, a user station, a mobile terminal, or a mobile station.

[0081] A device having a wireless communication function can correspond to the terminal 120. For example, equipment such as a business camera having the wireless communication function can also correspond to the terminal 120 even if the wireless communication is not a main application. In addition, a field pickup unit (FPU) that transmits an image for television broadcasting or the like from the outside (site) of a broadcasting station to the broadcasting station in order to perform sports broadcasting or the like may also have a function necessary for operation as the terminal 120.

[0082] Furthermore, the terminal 120 is not necessarily used by a person. For example, equipment such as a sensor installed in a machine of a factory, or a building, like machine type communication (MTC) equipment, may perform network connection to operate as the terminal 120.

[0083] In addition, equipment referred to as customer premises equipment (CPE) provided to secure Internet connection may have the function necessary for operation as the terminal 120.

[0084] Furthermore, as represented by device-to-device (D2D) and vehicle-to-everything (V2X), the terminal 120 may have a relay communication function.

[0085] In addition, similarly to the communication device 110, the terminal 120 does not need to be fixedly installed or exist on the ground. For example, an object existing in the air or space, such as an aircraft, a drone, a helicopter, or a satellite, may have the function necessary for operation as the terminal 120. Furthermore, for example, an object existing over the sea or under the sea, such as a ship or a submarine, may have the function necessary for operation as the terminal 120.

[0086] In the embodiment, unless otherwise specified, the terminal 120 corresponds to an entity that terminates a wireless link using the target frequency band. However, the terminal 120 can operate similarly to the communication device 110 depending on a function of the terminal 120 or an applied network topology. In other words, depending on the network topology, a device that can correspond to the communication device 110 such as the radio access point can correspond to the terminal 120, or a device that can correspond to the terminal 120 such as a smartphone can correspond to the communication device 110.

[0087] (Information Recording Device 300)The information recording device 300 is an entity in which one or more types of information used in the decision making performed by the information processing device 200 are recorded. The information processing device 200 may need to have a function of acquiring the information from a plurality of different information recording devices 300 depending on the type of information.

[0088] The information recording device 300 can be implemented as, for example, a database that records license information related to an operator of a primary system for the target frequency band, technical information and / or operation information of wireless equipment associated with the license.

[0089] As a representative example of such an information recording device 300, there is a universal licensing system (ULS) operated by the Federal Communications Commission (FCC) of the United States.

[0090] As an example of information necessary for protecting the primary system, for example, the following information and the like can be assumed.- Location information of primary system receiver- Information regarding reception antenna (model, gain, height, polarization, feeder loss, or the like)- Passive site-related information (location, height, back-to-back antenna gain, Billboard reflector size, or the like)- Other communication parameters- Out-of-band emission (OOBE) limit- Adjacent channel leakage ratio (ACLR)- Adjacent channel selectivity- Fading margin and protection ratio (PR)

[0091] For the purpose of protecting the primary system, in countries and regions where fixed numerical values, acquisition methods, derivation methods, and the like are defined by laws and regulations, and the like, it is desirable to follow the provisions of the laws and regulations.

[0092] The information recording device 300 can be implemented as, for example, a database that records information regarding the communication device 110 that has acquired equipment authentication related to the radio wave emission in the target frequency band. In a case where the terminal 120 is also the decision making target of the information processing device 200, information regarding the terminal 120 that has acquired the equipment authentication may be recorded in a similar manner.

[0093] As a representative example of such an information recording device, an equipment authorization system (EAS) managed by the Office of Engineering and Technology (OET) of the FCC is known.

[0094] In general, the following information can be recorded as information regarding the equipment authentication, but the information regarding the equipment authentication is not necessarily limited thereto.- Equipment authentication identifier (for example, FCC ID or technical standard conformity certificate number)- Equipment model name- Device class name- Emission designator- Operating frequency range- Transmission power

[0095] The information recording device 300 is, for example, a database that records a radio environment map (REM). The REM is a data set including information about a radio environment in an arbitrary region. Typically, the database is constructed by utilizing frequency sensing, measurement, and the like. The information processing device 200 may acquire the REM recorded in the information recording device 300 and use the REM for the decision making.

[0096] The information recording device 300 is, for example, a database that records a digital elevation model (DEM). In propagation loss estimation, such data can be utilized in a case where a model that requires information such as an elevation and a terrain is used.

[0097] For example, various data such as a digital value elevation model provided by the Geospatial Information Authority of Japan (GIS) and a three-dimensional digital elevation program (3DEP) data set provided by the United States Geological Survey (USGS) can be selected according to an application country / region and used as the DEM.

[0098] The information recording device 300 is, for example, a database that records three-dimensional (3D) building data. The 3D building data can be utilized in the propagation loss estimation, for example, in the case of determining line of sight / non-line of sight (LOS / NLOS).

[0099] It is a matter of course that a database that records data that can be used for the decision making of the information processing device 200 even if the data is not included in the above example may be treated as the information recording device 300. Furthermore, the information processing device 200 may have a function of acquiring information from the above database.

[0100] (Information Notification Device 400)The information notification device 400 is a system that notifies the information processing device 200 of information having time variability among pieces of information used in the decision making performed by the information processing device 200 according to a variation state.

[0101] The information notification device 400 can be implemented as, for example, a radio wave sensing system that detects the radio waves of the primary system that non-periodically / non-steadily performs the radio wave usage. A representative example thereof is an environmental sensing function (environmental sensing capability (ESC)) used in the CBRS of the United States. The ESC detects the radio waves of the shipborne radar as the primary system and notifies the SAS of detection information thereof. The SAS, which is the information processing device, manages and controls the radio wave emission of the CBSD (CBRS device), which is the communication device, by using the detection information.

[0102] The information notification device 400 can be implemented as, for example, a portal system that manages activity information of the primary system. Specific examples of the information notification device 400 can include a calendar-type system called an informing incumbent portal and the telecommunications advanced research and dynamic spectrum sharing system (TARDyS3) (see, for example, NPL 9) in the CBRS of the United States.

[0103] The information notification device 400 enables a protection area called the dynamic protection area (DPA) based on the acquired activity information and protects the primary system. The protection of the primary system can be implemented in a similar manner by an equivalent system called informing incumbent capability (IIC) (see, for example, NPL 10).

[0104] (Supplementary Matters)An interface between the entities included in the above system model may be a wired or wireless interface. In addition, the interface may be a combination of a wired interface and a wireless interface. For example, not only a wired link but also a wireless interface using a frequency band other than the target frequency band may be used as the interface between the information processing device 200 and the communication device 110.

[0105] Examples of the wireless interface using a frequency band other than the target frequency band include a wireless communication link provided by the mobile network operator via a licensed band. Further, examples of the wireless interface include Wi-Fi (registered trademark) communication using a license-exempt band such as a 2.4 GHz band or a 5 GHz band.

[0106] Except for the communication device 110, the intermediate device 130, and the terminal 120, for example, all the entities included in the above system model can take either / both forms of a physical entity and a logical entity (functional block).

[0107] For example, the information processing device 200 may have all 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 the frequency sensing or measurement function.

[0108] 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). The present disclosure is not limited to the above example, and the above system model may be modified and applied by all possible combinations.

[0109] <2-2. Terms>The term "transmission power" appearing in the embodiments may be replaced with the following terms unless otherwise specified.- Power spectral density (PSD)- Equivalent isotropic radiated power (EIRP)　- Total radiated power (TRP)　- Conducted power

[0110] It is a matter of course that the term "transmission power" is not limited thereto and may be used in place of any term representing the transmission power.

[0111] When applied to an embodiment other than a frequency sharing environment, the term "frequency" can be replaced with, for example, another term commonly used by an application destination as described below.- Resource- Resource block- Resource element- Resource Pool- Resource unit- Channel- Subchannel- Component carrier- Carrier- Subcarrier- Bandwidth part (BWP)

[0112] It is also assumed that the term "frequency" may be replaced with another term having an equivalent or similar meaning.

[0113] In addition, as described above, the embodiment is not limited to the frequency sharing environment. In general, in an example of the frequency sharing or secondary use of the frequency, an incumbent system using the target frequency band is referred to as the primary system, and the secondary user is referred to as a secondary system.

[0114] In a case where the embodiment is applied to an environment other than the frequency sharing environment, the systems may be replaced with other terms. For example, a macrocell base station in a heterogeneous network (HetNet) may be the primary system, and a small cell base station or a relay station may be the secondary system.

[0115] Further, the base station may be the primary system, and a relay UE or vehicle UE that implements the D2D or V2X in a coverage of the base station may be the secondary system. The base station is not limited to a fixed type, and may be a portable type or a mobile type. In such a case, for example, the information processing device 200 and an information processing method according to the embodiment may be provided in a core network, the base station, the relay station, the relay UE, or the like.

[0116] <2-3. Basic Processing of Information Processing System SYS1>An example of basic processing of the information processing system SYS1 according to the embodiment will be described using Figs. 5 and 6, tables, and mathematical expressions. The description will be given assuming that the basic processing described here is mainly performed in the communication device 110a from <2-3-1. Registration / Initialization Procedure> to <2-3-5. Supplementary Description of Various Procedures> described below.

[0117] <2-3-1. Registration / Initialization Procedure>A registration procedure is a procedure for registering, in the information processing device 200, the information regarding the communication device 110 that intends to use the frequency band. The registration procedure may be referred to as an initialization procedure.

[0118] Typically, the registration procedure is performed when the communication device 110 that intends to use the frequency band notifies the information processing device 200 of a registration request including a device parameter thereof.

[0119] Furthermore, the intermediate device 130 as a representative of one or more communication devices 110 that intend to use the frequency band notifies the information processing device 200 of the registration request including the device parameters of the one or more communication devices 110 described above, whereby the registration procedure may be performed.

[0120] (Details of Required Parameters)The device parameter indicates, for example, the following information.- Information regarding a user of the communication device 110 (hereinafter, also referred to as "user information")- Information unique to the communication device 110 (hereinafter, also referred to as "unique information")- Information regarding the location of the communication device 110 (hereinafter, also referred to as "location information")- Information regarding the antenna included in the communication device 110 (hereinafter, also referred to as "antenna information")- Information regarding the wireless interface included in the communication device 110 (hereinafter, also referred to as "wireless interface information")- Legal information regarding the communication device 110 (hereinafter, also referred to as "legal information")- Information regarding an installer of the communication device 110 (hereinafter, also referred to as "installer information")- Information regarding a group to which the communication device 110 belongs (hereinafter, also referred to as "group information")

[0121] The device parameter is not limited to the above information, and information other than the above information may be treated as the device parameter. The device parameter does not need to be transmitted once, and may be transmitted a plurality of times. That is, a plurality of registration requests may be transmitted for one registration procedure. In this manner, one procedure or one step of processing in one procedure may be performed a plurality of times. The same applies to procedures described below.

[0122] The user information is information regarding the user of the communication device 110. For example, a user ID, an account name, a user name, a user contact address, a call sign, and the like can be assumed as the user information. The user ID and the account name may be independently generated by the user of the communication device 110 or may be issued in advance by the information processing device 200. As the call sign, it is desirable to use a call sign issued by a national regulatory authority (NRA).

[0123] The user information can be used for interference resolution, for example. As a specific example, the information processing device 200 can perform use stop determination for the frequency being used by the communication device 110 in a frequency use notification procedure described in <2-3-5. Supplementary Description of Various Procedures> described below, and can issue an instruction based on the use stop determination. As described above, even in a case where the information processing device 200 issues the instruction based on the use stop determination, a notification of a frequency use notification request for the above frequency can be performed thereafter.

[0124] In this case, the information processing device 200 can suspect a failure of the communication device 110 and can notify the user contact address included in the user information of a behavior confirmation request for the communication device 110.

[0125] The present disclosure is not limited to the above example, and in a case where it is determined that the communication device 110 is performing an operation against communication control performed by the information processing device 200, the information processing device 200 can make a notification using the user information.

[0126] The unique information is information that can specify the communication device 110, product information of the communication device 110, information regarding hardware or software of the communication device 110, or the like.

[0127] Examples of the information that can specify the communication device 110 can include a manufacturing number (serial number) of the communication device 110, an ID of the communication device 110, and the like. The ID of the communication device 110 may be uniquely assigned by the user of the communication device 110, for example.

[0128] Examples of the product information of the communication device 110 can include an authentication ID, a product model number, information regarding a manufacturer, and the like. The authentication ID is, for example, an ID assigned from an authentication institution in each country or region, such as an FCC ID in the United States, a CE number in Europe, and a technical standard conformity certificate in Japan. An ID issued by an industry association or the like based on a unique authentication program may also be regarded as the authentication ID.

[0129] The unique information represented above can be used, for example, in an application of an allowlist or a denylist or disallowlist. For example, it is assumed that any information regarding the communication device 110 in operation is included in the denylist or disallowlist. In this case, the information processing device 200 can instruct the communication device 110 in operation to stop the frequency use in the frequency use notification procedure described in <2-3-5. Supplementary Description of Various Procedures> described below.

[0130] Furthermore, the information processing device 200 can take a behavior of not canceling a use stop measure until the communication device 110 in operation is removed from the denylist or disallowlist. Furthermore, for example, the information processing device 200 can deny the registration of the communication device 110 included in the denylist or disallowlist.

[0131] Furthermore, for example, the information processing device 200 can performs an operation of not considering the communication device 110 corresponding to information included in the denylist or disallowlist in interference calculation according to the embodiment. Alternatively, the information processing device 200 can perform an operation of considering only the communication device 110 corresponding to information included in the allowlist in the interference calculation.

[0132] In the embodiment, the authentication ID may be treated as information regarding the transmission power. For example, for an equipment authorization system (EAS) database that can be regarded as a type of information recording device, information regarding a device that has acquired FCC authentication can be obtained by using an application programming interface (API) (see, for example, NPL 11).

[0133] The record includes RF transmission power output associated with the authentication. In each record of the EAS, it is specified that the equivalent isotropic radiated power (EIRP) is recorded in a case where a field "grantNoteId" is "EP", and the conducted power is recorded otherwise. Therefore, the authentication ID is not limited to the FCC ID, and in a case where transmission power output information to be associated with the authentication ID exists, the authentication ID may be treated as being equivalent to the information.

[0134] Examples of the information regarding the hardware of the communication device 110 can include transmission power class information. For example, two types of classes, Category A and Category B, are defined as the transmission power class information in the CBRS of the United States. Furthermore, the information regarding the hardware of the communication device 110 conforming to the above definition can include information indicating which of the above two types of classes the information belongs to.

[0135] In addition, in TS 36.104 and TS 38.104 of the 3rd Generation Partnership Project (3GPP), some eNodeB and gNodeB classes are defined. The definition thereof can also be used as the information regarding the hardware of the communication device 110.

[0136] The transmission power class information can be used, for example, in an application of the interference calculation. The interference calculation can be performed using the maximum transmission power defined for each class as the transmission power of the communication device 110.

[0137] Example of the information regarding the software of the communication device 110 can include version information, a build number, and the like of an execution program in which processing necessary for interaction with the information processing device 200 is described. Furthermore, the information regarding the software of the communication device 110 may include version information, a build number, and the like of software for operation as the communication device 110.

[0138] The location information is typically information capable of specifying the location of the communication device 110. For example, the location information is coordinate information obtained by the positioning function. Representative examples of the positioning function include a global positioning system (GPS), Beidou, a quasi-zenith satellite system (QZSS), Galileo, and an assisted global positioning system (A-GPS).

[0139] Typically, the location information can include information regarding latitude, longitude, a ground level / sea level, altitude, and a positioning error. Alternatively, for example, the location information may be location information registered in an information management device managed by a national regulatory authority (NRA) or its agency. Alternatively, for example, the location information may be coordinates of an X axis, a Y axis, and a Z axis with a specific geographical location as an origin. In addition to such coordinate information, an identifier indicating whether the communication device 110 is present outdoors or indoors can be added to the location information.

[0140] Further, the location information may include positioning accuracy information (location uncertainty). For example, both or one of a horizontal plane and a vertical plane can be provided as the positioning accuracy information. The positioning accuracy information can be used as a correction value, for example, when calculating a distance to an arbitrary point. Furthermore, for example, the positioning accuracy information can also be used as region information in which there is a possibility that the communication device 110 is located. In this case, the positioning accuracy information is used for processing of specifying frequency information that can be used in a region indicated by the positioning accuracy information.

[0141] Furthermore, the location information may be information indicating a region where the communication device 110 is located. For example, information indicating a region determined by an administration, such as a postal code or an address, may be used. Furthermore, for example, the region may be indicated by a set of three or more geographic coordinates. These pieces of information indicating the region may be provided together with the coordinate information.

[0142] Furthermore, in a case where the communication device 110 is located indoors, information indicating a floor of a building where the communication device 110 is located can also be included in the location information. For example, identifiers indicating the number of stories, the ground, the underground, and the like can be included in the location information. Furthermore, for example, information indicating a further closed space inside the building, such as a room number and a room name in the building, can be included in the location information.

[0143] In a case where the antenna used by the communication device 110 is the external antenna, it is desirable to use location information of the external antenna as the location information. In other words, it is desirable to treat the external antenna as the communication device 110.

[0144] Typically, the positioning function is desirably provided by the communication device 110. However, performance of the positioning function does not have to meet the required accuracy. In addition, even in a case where the performance of the positioning function satisfies the required accuracy, the location information that satisfies the required accuracy cannot necessarily be acquired depending on an installation location of the communication device 110 in some cases.

[0145] Therefore, a device different from the communication device 110 may have the positioning function, and the communication device 110 may acquire the information regarding the location from the device. The device having the positioning function may be an available existing device and may be installed by the installer of the communication device 110. In such a case, it is desirable that the location information measured by the installer of the communication device 110 is written in the communication device 110.

[0146] The antenna information is typically information indicating performance, a configuration, and the like of the antenna included in the communication device 110. Typically, information such as an antenna installation height, a tilt angle (downtilt), a horizontal orientation (azimuth), a boresight, an antenna peak gain, and an antenna model can be included.

[0147] The antenna information can also include information regarding a formable beam. For example, information such as a beam width, a beam pattern, and an analog or digital beamforming capability can be included.

[0148] In addition, the antenna information can also include information regarding performance and a configuration of multiple input multiple output (MIMO) communication. For example, information such as the number of antenna elements and the maximum number of spatial streams (or the number of MIMO layers) can be included.

[0149] In addition, codebook information to be used, weight matrix information, and the like can also be included. Examples of the weight matrix information include a unitary matrix, a zero-forcing (ZF) matrix, and a minimum mean square error (MMSE) matrix. These are obtained by singular value decomposition (SVD), eigen value decomposition (EVD), block diagonalization (BD), or the like.

[0150] Furthermore, in a case where the communication device 110 has a function such as maximum likelihood detection (MLD) that requires nonlinear calculation, information indicating the provided function may be included in the antenna information.

[0151] The antenna information may include a zenith of direction (departure) (ZoD). The ZoD is a type of a radio wave arrival angle. The ZoD may be estimated by another communication device 110E from the radio waves emitted from the antenna of the communication device 110 and reported instead of being reported from the communication device 110. In this case, the communication device 110 may be a device that operates as the base station or an access point, a device that performs D2D communication, a moving relay base station, or the like.

[0152] The ZoD can be estimated by a radio wave arrival direction estimation technology such as multiple signal classification (MUSIC) or estimation of signal propagation via rotation invariance techniques (ESPRIT). Furthermore, the ZoD can be used by the information processing device 200 as measurement information.

[0153] The wireless interface information is typically information indicating a wireless interface technology provided in the communication device 110. For example, identifier information indicating a technology used in global system for mobile communications (GSM), CDMA2000, universal mobile telecommunication system (UMTS), evolved universal terrestrial radio access (E-UTRA), E-UTRA narrowband Internet of Things (NB-IoT), 5G New Radio (NR), 5G NR NB-IoT, or a further next generation cellular system can be included as the wireless interface information.

[0154] The wireless interface information can also include identifier information indicating a derivative technology based on Long Term Evolution (LTE) / 5G, such as MulteFire, Long Term Evolution-Unlicensed (LTE-U), or NR-Unlicensed (NR-U).

[0155] The wireless interface information can also include identifier information indicating a standard technology such as a metropolitan area network (MAN) such as worldwide interoperability for microwave access (WiMAX) or WiMAX2+, or a wireless local area network (LAN) of the IEEE 802.11 series. In addition, the wireless interface information may be identifier information indicating an extended global platform (XGP) or a shared XGP (sXGP). The wireless interface information may be identifier information of a communications technology for low power, wide area (LPWA).

[0156] Identifier information indicating a proprietary wireless technology can also be included. The wireless interface information can also include a version number or a release number of a technical specification that defines these technologies as the wireless interface information.

[0157] The wireless interface information can also include frequency band information supported by the communication device 110. For example, the frequency band information can 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. In addition, one or more pieces of frequency band information can be included in the wireless interface information.

[0158] As the frequency band information supported by the communication device 110, information indicating a capability of a band extension technology such as carrier aggregation (CA) or channel bonding can also be included in the wireless interface information. For example, band information or the like that can be combined can be included in the wireless interface information.

[0159] Furthermore, for the carrier aggregation, information regarding a band desired to be used as a primary component carrier (PCC) or a secondary component carrier (SCC) can also be included in the wireless interface information. In addition, the number of component carriers (the number of CCs) that can be aggregated at the same time can also be included in the wireless interface information.

[0160] As the frequency band information supported by the communication device 110, information indicating a combination of frequency bands supported by dual connectivity and multi connectivity may be further included in the wireless interface information. In addition, information regarding another communication device 110E that cooperatively provides the dual connectivity and the multi connectivity may also be provided to the information processing device 200. The information processing device 200 may determine the communication control according to the embodiment in consideration of another communication device 110E having a cooperative relationship or the like in the subsequent procedure.

[0161] In addition, as the frequency band information supported by the communication device 110, information indicating the frequency use priority and the tier such as priority access license (PAL) or general authorized access (GAA) may be included in the wireless interface information.

[0162] The wireless interface information can also include modulation scheme information supported by the communication device 110. For example, as a representative example, information indicating a primary modulation scheme such as frequency shift keying (FSK), n-value phase shift keying (PSK), where n is a multiplier of 2, such as 2, 4, or 8), or n-value quadrature amplitude modulation (QAM), where n is a multiplier of 4, such as 4, 16, 64, 256, or 1024) can be included. In addition, information indicating a secondary modulation scheme such as orthogonal frequency division multiplexing (OFDM), scalable OFDM, DFT spread OFDM (DFT-s-OFDM), generalized frequency division multiplexing (GFDM), or filter bank multi carrier (FBMC) can be included in the wireless interface information.

[0163] The wireless interface information can also include information regarding an error correcting code. For example, capabilities and coding rate information to be applied such as a turbo code, a low density parity check (LDPC) code, a polar code, and an erasure correction code can be included in the wireless interface information.

[0164] The modulation scheme information and the information regarding the error correcting code can also be expressed by a modulation and coding scheme (MCS) index as another aspect.

[0165] The wireless interface information can also include information indicating a function specific to each wireless technical specification supported by the communication device 110. For example, as a representative example, there is transmission mode (TM) information defined in the LTE.

[0166] In addition, those having two or more modes for a specific function can be included in the wireless interface information like the TM information described above. In addition, in the technical specification, even when there are not two or more modes, in a case where the communication device 110 supports a function that is not essential in the specification, information indicating the supported function can also be included in the wireless interface information.

[0167] The wireless interface information can also include radio access technology (RAT) information 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), carrier sense multiple access / collision detection (CSMA / CD), or the like can be included in the wireless interface information.

[0168] The TDMA, the FDMA, and the OFDMA are classified as orthogonal multiple access (OMA). The PDMA, the CDMA, the SCMA, the IDMA, and the SDMA are classified as non-orthogonal multiple access (NOMA). A representative example of the PDMA is a method implemented by a combination of superposition coding (SPC) and successive interference canceller (SIC). The CSMA / CA and the CSMA / CD are classified as opportunistic access.

[0169] In a case where the wireless interface information includes information indicating the opportunistic access, information indicating details of an access scheme may be further included. As a specific example, information indicating frame based equipment (FBE) or load based equipment (LBE) defined in EN 301 598 of the ETSI is included in the wireless interface information.

[0170] In a case where the wireless interface information indicates the LBE, the wireless interface information may further include LBE-specific information such as a priority class.

[0171] In addition, the wireless interface information can also include information regarding a duplex mode supported by the communication device 110. As a representative example, information regarding a scheme such as frequency division duplex (FDD), time division duplex (TDD), or full duplex (FD) can be included in the wireless interface information.

[0172] In a case where the TDD is included as the wireless interface information, TDD frame structure information used or supported by the communication device 110 can be added. In addition, the information regarding the duplex mode may be included in the wireless interface information for each frequency band indicated by the frequency band information.

[0173] In a case where the FD is included as the wireless interface information, information regarding an interference power detection level may be included in the wireless interface information.

[0174] The wireless interface information can also include information regarding a transmission diversity method supported by the communication device 110. For example, space time coding (STC) or the like may be included in the wireless interface information.

[0175] The wireless interface information can also include guardband information. For example, information regarding a guardband size predetermined for the wireless interface can be included in the wireless interface information. Alternatively, for example, information regarding a guardband size desired by the communication device 110 may be included in the wireless interface information.

[0176] Regardless of the above aspects, the wireless interface information may be provided for each frequency band.

[0177] The legal information is typically information regarding regulations that the communication device 110 must comply with, which are defined by a radio wave administration agency or equivalent agencies in each country or region, authentication information acquired by the communication device 110, or the like.

[0178] Typically, for example, upper limit value information of out-of-band emission, information regarding a blocking characteristic of a receiver, and the like can be included in the legal information as the information regarding the regulations. Typically, as the authentication information, for example, type approval information, legal / regulatory information serving as a standard for the acquisition of the authentication, and the like can be included in the legal information.

[0179] The type approval information corresponds to, for example, the FCC ID of the United States, the technical standard conformity certificate of Japan, and the like. The legal / regulatory information corresponds to, for example, an FCC regulation number of the United States, an ETSI harmonized standard number of Europe, and the like.

[0180] In the legal information, for information regarding numerical values, those defined in the specification of the wireless interface technology may be substituted. The specification of the wireless interface technology corresponds to, for example, 3GPP TS 36.104 or TS 38.104. An adjacent channel leakage ratio (ACLR) is defined therein.

[0181] The information processing device 200 may derive and use the upper limit value of the out-of-band emission by using the ACLR defined in the specification instead of the upper limit value information of the out-of-band emission. Furthermore, if necessary, the information processing device 200 may use the ACLR itself as the upper limit value information of the out-of-band emission.

[0182] Furthermore, the information processing device 200 may use adjacent channel selectivity (ACS) instead of the blocking characteristic. In addition, the ACS and the blocking characteristic may be used in combination, or an adjacent channel interference ratio (ACIR) may be used. In general, the ACIR has a relationship with the ACLR and the ACS as in the following Expression (1). In addition, the following Expression (1) uses true value expression and may also be expressed by logarithmic expression.

[0183]

[0184] The installer information can include information that can specify a person (installer) who has installed the communication device 110, unique information associated with the installer, and the like. Typically, the installer information can include information regarding a person who is responsible for the location information of the communication device 110, such as a certified professional installer (CPI) (see, for example, NPL 12) in the CBRS of the United States.

[0185] In the CPI, a certified professional installer registration ID (CPIR-ID) and a CPI name are disclosed. Furthermore, as the unique information associated with the CPI, for example, a mailing address or contact address, an e-mail address, a telephone number, a public key identifier (PKI), or the like is disclosed. The present disclosure is not limited thereto, and other information regarding the installer may be included in the installer information as necessary.

[0186] The group information can include information regarding a communication device group to which the communication device 110 belongs. Specifically, for example, information group information regarding the same or equivalent type of groups as WINNF-SSC-0010 (see, for example, NPL 13) can be included. Furthermore, for example, in a case where a communication operator manages the communication devices 110 in units of groups according to an operation policy thereof, information regarding the group can be included in the group information.

[0187] The information listed so far may be estimated by the information processing device 200 from other information provided from the communication device 110 without the communication device 110 providing the information to the information processing device 200. Specifically, for example, the guardband information can be estimated from the wireless interface information.

[0188] Guardband information estimation processing according to the embodiment will be described with reference to Figs. 5 and 6. Figs. 5 and 6 are diagrams illustrating a third specific example of the basic principle of the information processing system SYS1 according to the embodiment of the present disclosure.

[0189] In a case where the wireless interface used by the communication device 110 is the E-UTRA or the 5G NR, the information processing device 200 can estimate the guardband information based on a transmission bandwidth specification of the E-UTRA, a transmission bandwidth specification of the 5G NR, and Tables 1 to 4 below. The transmission bandwidth specification of the E-UTRA is described, for example, in TS 36.104 of the 3GPP illustrated in Fig 5. The transmission bandwidth specification of the 5G NR is described in TS 38.104 of the 3GPP illustrated in Fig 6. The following Tables 1 to 4 are described in TS 38.104.

[0190]

[0191]

[0192]

[0193]

[0194] In other words, it is sufficient if the information processing device 200 can acquire the information listed so far, and the communication device 110 is not necessarily required to provide the information to the information processing device 200. Furthermore, the intermediate device 130 (for example, a network manager) that bundles the plurality of communication devices 110 is not required to provide the information to the information processing device 200.

[0195] Providing the information to the information processing device 200 by the communication device 110 or the intermediate device 130 is merely means for information provision in the embodiment. The information listed so far means information that can be necessary for the information processing device 200 to normally complete the above procedure, and the means for information provision does not matter. For example, in WINNF-TS-0061, such a method is called multi-step registration and allowed.

[0196] In addition, it is a matter of course that the information listed so far can be selectively applied according to regulatory / legal frameworks and technical specifications of an application country / application region.

[0197] (Supplementary Description of Required Parameters)In the registration procedure, in some cases, it is assumed that not only the communication device 110 but also the device parameters related to the terminal 120 are required to be registered in the information processing device 200. In such a case, the term "communication device" in the above description of <2-3-1. Registration / Initialization Procedure> may be replaced with the term "terminal" or an equivalent term. In addition, a parameter specific to the "terminal" that is not described in <2-3-1. Registration / Initialization Procedure> may also be treated as the required parameter in the registration procedure. Examples of the parameter specific to the "terminal" include a UE category defined in the 3GPP.

[0198] (Details of Registration Processing)As described above, the communication device 110 representing the wireless communication system that intends to use the frequency band generates the registration request including the device parameter and notifies the information processing device 200 of the registration request.

[0199] Here, in a case where the device parameter includes the installer information, the communication device 110 may perform falsification prevention processing or the like on the registration request by using the installer information. In addition, a part of or the entirety of the information included in the registration request may be subjected to encryption processing. 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 secret key corresponding to the public key. Examples of a target of the encryption include sensitive information such as the location information.

[0200] The ID and the location information of the communication device 110 can be disclosed, and the information processing device 200 can hold in advance the ID and the location information of the main communication device 110 existing in the coverage thereof. In such a case, the information processing device 200 can acquire the location information from the ID of the communication device 110 that has transmitted the registration request. Therefore, the location information does not need to be included in the registration request.

[0201] Furthermore, it is also conceivable that the information processing device 200 returns a necessary device parameter to the communication device 110 that has transmitted the registration request, and in response to reception of the device parameter, the communication device 110 transmits the registration request including the device parameter necessary for registration. In this manner, the information included in the registration request may vary depending on circumstances.

[0202] Furthermore, in a case where the communication device 110 is a mobile type, it is not necessary to register the location information in the information processing device 200 depending on a regulation of a target country / region. Therefore, it is sufficient if necessary functions are provided for the provision of the location information according to the regulation of the target country / region.

[0203] After receiving the registration request, the information processing device 200 performs registration processing for the communication device 110, and makes a registration response according to a processing result. In a case where there is no shortage or abnormality in information necessary for the registration, the information processing device 200 records the information in an internal or external storage device and notifies of normal completion. Otherwise, the information processing device 200 notifies of a registration failure. In a case where the registration is normally completed, the information processing device 200 may assign the ID to each communication device 110 and notify of the ID information at the time of making a response. In a case where the registration fails, the communication device 110 may notify of the corrected registration request again. Furthermore, the communication device 110 may change the registration request and try the registration procedure until normal completion.

[0204] The registration procedure may be performed even after the registration is normally completed. Specifically, for example, in a case where the location information is changed beyond a predetermined reference due to movement / accuracy improvement or the like, the registration procedure can be performed again for the purpose of initialization. The predetermined reference is typically determined by the legal framework in each country or region. For example, in the TV white space regulation 47 C.F.R Part 15 Subpart H (see, for example, NPL 1) in the United States, it is required that equipment using a Mode II personal / portable white space device, that is, an available frequency, performs the registration again in a case where the location thereof is changed by 100 meters or more.

[0205] <2-3-2. Available Frequency Information Query Procedure (Available Spectrum Query Procedure)>An available frequency information query procedure is a procedure in which the communication device 110 that intends to use the frequency band inquires the information processing device 200 about information regarding an available frequency. The available frequency information query procedure does not necessarily need to be performed. Furthermore, the intermediate device 130 that performs an inquiry 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 has generated the registration request. Typically, the procedure is started when the communication device 110 that performs the inquiry notifies the information processing device 200 of a query request including the information that can specify the communication device 110.

[0206] Here, the available frequency information is typically information indicating a frequency estimated to be available for the secondary use by the communication device 110 without causing the fatal interference to the primary system.

[0207] The available frequency information is determined, for example, based on a secondary use prohibited area called an exclusion zone. Specifically, for example, in a case where the communication device 110 is installed in the secondary use prohibited area provided for the purpose of protecting the primary system using a frequency channel F1, the communication device 110 is not notified of the frequency channel F1 as an available channel.

[0208] The available frequency information can also be determined, for example, by the degree of interference with the primary system. Specifically, for example, in a case where it is determined that the fatal interference is caused to the primary system even outside the secondary use prohibited area, the corresponding frequency channel is not reported as the available channel in some cases. An example of a specific calculation method is described below.

[0209] Further, as described above, there can be a frequency channel that is not reported as being available due to a condition other than a primary system protection requirement. Specifically, for example, in order to avoid the interference that may occur between the communication devices 110 in advance, a frequency channel that is being used by another communication device 110E present in the vicinity of the communication device 110 is not reported as the available channel in some cases. In this manner, the available frequency information configured in consideration of the interference with another communication device 110E may be configured as, for example, "frequency information recommended to be used" and provided together with the available frequency information. That is, the "frequency information recommended to be used" is desirably a subset of the available frequency information.

[0210] Even in the case of affecting the primary system, if the influence can be avoided by reducing the transmission power, the same frequency as that of the primary system or the neighboring communication device 110 can be reported as the available channel. In such a case, typically, allowable maximum transmission power is included in the available frequency information. The allowable maximum transmission power is typically expressed by the EIRP, but is not necessarily limited thereto, and may be provided by, for example, a combination of the conducted power and an antenna gain. Furthermore, the antenna gain may be set to an allowable peak gain for each spatial direction.

[0211] (Details of Required Parameters)As the information that can specify the wireless communication system that intends to use the frequency band, for example, the unique information registered at the time of the registration procedure, the ID information described above, and the like can be assumed.

[0212] A query request can also include query requirement information. The query requirement information can include, for example, information indicating a frequency band whose availability is desired to be known. Further, for example, transmission power information can also be included. For example, the communication device 110 can include the transmission power information in a case where it is desired to know only information regarding a frequency at which desired transmission power can be used. The query requirement information does not necessarily need to be included in the query request.

[0213] Furthermore, in a case where the communication device 110 is a mobile type, the query requirement information can include geofence information. That is, the available frequency information can be queried anywhere in a geographical region / space indicated by the geofence information.

[0214] The information indicating the frequency band can also include information indicating a format of the available frequency information. In the IEEE 802.11 standard, a channel number is defined for each band. For example, a flag for requesting for availability of a channel defined in the wireless interface technical specification may be included. As another format, a flag for requesting for availability of a unit frequency range instead of the defined channel may be included. In a case where a unit frequency is 1 MHz, the available frequency information is requested for each frequency range of 1 MHz. In a case where this flag is used, the desired unit frequency information may be included with the flag.

[0215] The query request can also include a measurement report. The measurement report includes a result of measurement performed by the communication device 110 and / or the terminal 120. Some or all of the measurement results may be represented by raw data or may be represented by processed data. For example, standardized metrics represented by reference signal received power (RSRP), reference signal strength indicator (RSSI), and reference signal received quality (RSRQ) can be used for the measurement.

[0216] (Details of Available Frequency Evaluation Processing)After receiving the query request, the information processing device 200 evaluates the available frequency based on the query requirement information. For example, as described above, the available frequency can be evaluated in consideration of the primary system, the secondary use prohibited area thereof, and the presence of the neighboring communication device 110.

[0217] 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 derived secondary use prohibited area. For example, in a case where maximum transmission power PMaxTx(dBm)and the minimum transmission power PMinTx(dBm)) are defined, it is possible to calculate a range of a separation distance between the primary system and the secondary system from the following Expression (2) and determine the secondary use prohibited area.

[0218]

[0219] In Expression (2), ITh(dBm)is allowable interference power (a limit value of the allowable interference power), d is a distance between a predetermined reference point and the communication device 110, and PL()(dB) is a function of a propagation loss. As a result, frequency availability can be determined according to a positional relationship between the primary system and the communication device 110. Furthermore, in a case where the transmission power information or power range information desired to be used by the communication device 110 is supplied as a request, the frequency availability can be determined by calculating PL-1(PTx(dBm)-ITh(dBm)) and comparing with the above range expression.

[0220] The information processing device 200 may derive allowable maximum transmission power information at a given frequency (channel) as the available frequency information. Typically, the allowable maximum transmission power PMaxTx(dBm)is calculated using allowable interference power information in the primary system or a protection zone thereof, location information of the reference point for calculating an interference power level experienced by the primary system, the registration information of the communication device 110, and a propagation loss estimation model. Specifically, as an example, the allowable maximum transmission power is calculated by the following Expression (3).

[0221]

[0222] Although an antenna gain in a transceiver is not included in Expression (3), the antenna gain in the transceiver may be included according to an expression method of the allowable maximum transmission power (for example, the EIRP and the conducted power) or a reference point of received power (for example, an antenna input point and an antenna output point). Further, a safety margin or the like for compensating for variation due to fading may be included. In addition, a feeder loss may be considered as necessary. In addition, it is possible to similarly calculate an adjacent channel by adding the adjacent channel leakage ratio (ACLR) and the maximum value of the out-of-band emission.

[0223] In addition, Expression (3) is described based on the assumption that the single communication device 110 is an interference source (single station interference). For example, in a case where it is necessary to consider aggregated interference from the plurality of communication devices 110 at the same time, a correction value may be added. Specifically, for example, the correction value can be determined based on three types (fixed / predetermined, flexible, and flexible minimized) of interference margin methods (for example, see NPL 4).

[0224] The allowable interference power information itself is not necessarily directly available as in Expression (3). For example, in a case where a required signal power-to-interference power ratio (signal-to-interference ration (SIR)), a signal-to-interference plus noise ratio (SINR), or the like of the primary system is available, the SIR and the SINR may be converted into the allowable interference power and used. Such conversion processing is not limited to such processing, and may be applied to processing of other procedures.

[0225] Although Expression (3) is expressed using logarithms, it is a matter of course that the equation may be converted into a true number and used in implementation. In addition, all parameters in logarithmic notation according to the embodiment may be appropriately converted into true numbers and used.

[0226] Further, in a case where the above transmission power information is included in the query requirement information, it is possible to evaluate the available frequency by a method different from the above-described method. Specifically, for example, in a case where it is assumed that the desired transmission power indicated by the transmission power information is used, when an estimated amount of interference is less than the allowable interference power in the primary system or the protection zone thereof, it is determined that the frequency channel is available, and the communication device 110 is notified of the frequency channel.

[0227] Furthermore, for example, similarly to an area of the REM, in a case where an area or space in which the communication device 110 can use the frequency band is determined in advance, the available frequency information may be simply derived based on only the coordinates (the coordinates of the X axis, the Y axis, and the Z axis of the communication device 110) included in the location information of the communication device 110. Furthermore, for example, even in a case where a lookup table that associates the coordinates of the location of the communication device 110 with the available frequency information is prepared, the available frequency information may be derived based on only the location information of the communication device 110. As described above, there are various methods for determining the available frequency, and the method is not limited to the above example.

[0228] Furthermore, in a case where the information processing device 200 acquires the information about the capability of the band extension technology such as the carrier aggregation (CA), the channel bonding, or the like as the frequency band information supported by the communication device 110, the information processing device 200 may include an available combination, a recommended combination, or the like thereof in the available frequency information.

[0229] Furthermore, in a case where the information processing device 200 acquires the information about the combination of the frequency bands supported by the dual connectivity and the multi connectivity as the frequency band information supported by the communication device 110, the information processing device 200 may include information regarding the available frequency, the recommended frequency, and the like in the available frequency information for the dual connectivity and the multi connectivity.

[0230] In addition, in the case of providing the available frequency information for the band extension technology as described above, when an imbalance of the maximum allowable transmission power occurs between the plurality of frequency channels, the available frequency information may be provided after adjusting the maximum allowable transmission power of each frequency channel. For example, from the perspective of primary system protection, the maximum allowable transmission power of each frequency channel may match the allowable maximum transmission power of the frequency channel having a low maximum power spectral density (PSD).

[0231] The evaluation of the available frequency does not necessarily need to be performed after the query request is received. For example, after the normal completion of the above-described registration procedure, the information processing device 200 may independently perform the evaluation without the query request. In such a case, the REM and the lookup table described above as an example, or an information table similar thereto may be created.

[0232] The evaluation may also be performed on the frequency use priority such as the PAL or GAA. For example, in a case where the registered device parameter or the query requirement includes information regarding the frequency use priority, it may be determined whether or not the frequency use is possible based on the priority, and the notification may be made. Furthermore, for example, in a case where information (for example, cluster list) regarding the communication device 110 that performs high priority use (for example, PAL) is registered in the information processing device 200 in advance by the user, the evaluation may be performed based on the information (see, for example, NPL 3).

[0233] After the evaluation of the available frequency is completed, the information processing device 200 notifies the communication device 110 of the evaluation result.

[0234] The communication device 110 may select a desired communication parameter by using the evaluation result received from the information processing device 200. In a case where <2-3-3. Frequency Use Grant Procedure> described below is not adopted, the communication device 110 may start radio wave transmission using the selected desired communication parameter as the communication parameter.

[0235] <2-3-3. Frequency Use Grant Procedure (Spectrum Grant Procedure)>The frequency use grant procedure is a procedure for the communication device 110 that intends to use the frequency band to obtain a grant for the secondary use of the frequency from the information processing device 200. Typically, the procedure is started when the communication device 110 notifies the information processing device 200 of a frequency use grant request including the information that can specify the communication device 110. In addition, the intermediate device 130 as a representative of one or more communication devices 110 that intend to use the frequency band notifies the information processing device 200 of the frequency use grant request including the information that can specify one or more communication devices 110 described above, whereby the frequency use grant procedure may be performed. As described above, the available frequency information query procedure is not essential. Therefore, the frequency use grant procedure may be performed next to the available frequency information query procedure, or may be performed next to the registration procedure. In addition, the "spectrum grant" may be referred to as a "grant".

[0236] In the embodiment, it is assumed that at least the following two types of frequency use grant request methods can be used.- Designation method- Flexible method

[0237] The designation method is a request method in which the communication device 110 designates the desired communication parameter and requests the information processing device 200 to permit operation based on the desired communication parameter. The desired communication parameter includes, but is not particularly limited to, the frequency channel desired to be used, the maximum transmission power, and the like. For example, wireless-interface-technology-specific parameters (for example, the modulation scheme and the duplex mode) may be specified. In addition, information indicating the frequency use priority / tier such as the PAL and GAA may be included.

[0238] The flexible method is a request method in which the communication device 110 designates only a requirement related to the communication parameter and requests the information processing device 200 to designate the communication parameter that can be permitted for the secondary use while satisfying the designated requirement. Examples of the requirement related to the communication parameter include, but are not particularly limited to, a bandwidth, desired maximum transmission power, and desired minimum transmission power. For example, wireless-interface-technology-specific parameters (for example, the modulation scheme and the duplex mode) may be specified. Specifically, for example, one or more TDD frame structures may be selected in advance and reported.

[0239] Similarly to the query request, the frequency use grant request may also include the measurement report in either the designation method or the flexible method. The measurement report includes a result of measurement performed by the communication device 110 and / or the terminal 120. The measurement may be represented by raw data or processed data. For example, standardized metrics represented by reference signal received power (RSRP), reference signal strength indicator (RSSI), and reference signal received quality (RSRQ) can be used for the measurement.

[0240] Method information used by the communication device 110 may be registered in the information processing device 200 at the time of the registration procedure of <2-3-1. Registration / Initialization Procedure> described above.

[0241] (Details of Frequency Use Grant Processing)After receiving the frequency use grant request, the information processing device 200 performs frequency use grant processing based on the frequency use grant request method. For example, it is possible to perform the frequency use grant processing in consideration of the primary system, the secondary use prohibited area, the presence of the neighboring communication device 110, and the like by using the method described in <2-3-2. Available Frequency Information Query Procedure> described above.

[0242] In a case where the flexible method is used, the allowable maximum transmission power information may be derived using the method described above (details of the available frequency evaluation processing). Typically, the allowable maximum transmission power is calculated using the allowable interference power information in the primary system or the protection zone thereof, the location information of the reference point for calculating the interference power level experienced by the primary system, the registration information of the communication device 110, and the propagation loss estimation model. Specifically, as an example, the allowable maximum transmission power is calculated by Expression (3).

[0243] Furthermore, as described above, Expression (3) is described based on the assumption that the single communication device 110 is the interference source. For example, in a case where it is necessary to consider the aggregated interference from the plurality of communication devices 110 at the same time, the correction value may be added. Specifically, for example, the correction value can be determined based on three types (fixed / predetermined, flexible, and flexible minimized) of methods.

[0244] The information processing device 200 can use various propagation loss estimation models in the frequency use grant procedure, the available frequency evaluation processing for the available frequency information query request, and the like. In a case where the model is designated for each application, it is desirable to use the designated model. For example, in WINNF-TS-0112, a propagation loss model such as extended Hata (eHATA) or irregular terrain model (ITM) is adopted for each application (see, for example, NPL 3). It is a matter of course that the propagation loss model is not limited thereto.

[0245] There are also propagation loss estimation models that require information regarding a radio wave propagation path. The information regarding the radio wave propagation path can include, for example, information indicating the line of sight (LOS) and / or non-line of sight (NLOS), terrain information (for example, undulation or sea level), and environmental information (for example, urban, suburban, rural, or open sky). When using the propagation loss estimation model, the information processing device 200 may estimate the above information from the already acquired registration information of the communication device 110 or information of the primary system. Alternatively, in a case where there is a parameter designated in advance, it is desirable to use the designated parameter.

[0246] In a case where the propagation loss estimation model is not designated in a predetermined application, the propagation loss estimation model may be selectively used as necessary. For example, when estimating interference power for another communication device 110, a model with lower calculated loss, such as a white space loss model, can be used, and when estimating the coverage of the communication device 110, a model with higher calculated loss can be used.

[0247] In addition, in a case where the designated propagation loss estimation model is used, as an example, it is possible to perform the frequency use grant processing by evaluating an interference risk. Specifically, for example, when an interference amount estimated on the assumption that the desired transmission power indicated by the transmission power information is used is less than the allowable interference power in the primary system or the protection zone thereof, it is determined that the use of the frequency channel can be permitted, and the communication device 110 is notified of the determination.

[0248] In any one of the designated method and the flexible method, similarly to the query request, the evaluation may be performed for the frequency use priority such as the PAL or GAA. For example, in a case where the registered device parameter or the query requirement includes the information regarding the frequency use priority, it may be determined whether or not the frequency use is possible based on the frequency use priority, and the notification may be made. Furthermore, for example, in a case where the information regarding the communication device 110 that performs the high priority use (for example, PAL) is registered in the information processing device 200 in advance by the user, the evaluation may be performed based on the information. For example, the information regarding the communication device 110 is referred to as the cluster list (see, for example, NPL 14).

[0249] In addition, in any one of the above calculations, when the location information of the communication device 110 is used, the frequency availability may be determined by correcting the location information or the coverage using the positioning accuracy information (location uncertainty).

[0250] The frequency use grant processing does not necessarily need to be performed in response to the reception of the frequency use grant request. For example, after the normal completion of the registration procedure described above, the information processing device 200 may independently perform the processing without the frequency use grant request. Furthermore, for example, the frequency use grant processing may be performed at regular intervals. In such a case, the REM and the lookup table described above, or the information table similar thereto may be created. As a result, the frequency that can be permitted is determined only by the location information, so that the information processing device 200 can quickly make a response after receiving the frequency use grant request.

[0251] <2-3-4. Frequency Use Notification / Authorization / Heartbeat (Spectrum Use Notification / Authorization / Heartbeat)>A frequency use notification / authorization procedure is a procedure in which the wireless communication system using the frequency band notifies the information processing device 200 of the frequency use based on the communication parameter allowed to be used in the frequency use grant procedure. The communication device 110 that makes the frequency use notification as a representative of the wireless communication system may be the same as or different from the communication device 110 that has performed the procedures so far. Typically, the communication device 110 transmits, to the information processing device 200, a notification message including the information that can specify the communication device 110.

[0252] The frequency use notification is desirably periodically made until the frequency use is denied from the information processing device 200. In this case, the frequency use notification / authorization procedure is also referred to as heartbeat.

[0253] After receiving the frequency use notification, the information processing device 200 may determine whether or not the start or continuation of the frequency use (in other words, the radio wave transmission at the permitted frequency) is possible. Examples of the determination method include confirmation of frequency use information of the primary system. Specifically, it is possible to determine permission or denial of the start or continuation of the frequency use (the radio wave transmission at the permitted frequency) based on a change in the used frequency of the primary system, a change in a frequency use status of the primary system in which the radio wave usage is not steady (for example, the shipborne radar of the CBRS of the United States), or the like. If the start or continuation is permitted, the communication device 110 may start or continue the frequency use (the radio wave transmission at the permitted frequency).

[0254] After receiving the frequency use notification, the information processing device 200 may instruct the communication device 110 to reconfigure the communication parameter. Typically, the reconfiguration of the communication parameter can be instructed in a response of the information processing device 200 to the frequency use notification. For example, information regarding the recommended communication parameter (hereinafter, referred to as recommended communication parameter information) can be provided. The communication device 110 to which the recommended communication parameter information has been provided desirably performs the frequency use grant procedure of <2-3-3. Frequency Use Grant Procedure> described above again by using the recommended communication parameter information.

[0255] <2-3-5. Supplementary Description of Various Procedures>Various procedures described above do not necessarily need to be individually implemented as described below. For example, two different procedures may be implemented in a manner in which a third procedure with roles of the two different procedures is substituted for the two different procedures. Specifically, for example, the registration request and the available frequency information query request may be integrally reported. Furthermore, for example, the frequency use grant procedure and the frequency use notification may be integrally performed. It is a matter of course that three or more procedures may be integrally performed in addition to a combination of the frequency use grant procedure and the frequency use notification. In addition, as described above, one procedure may be separately performed a plurality of times.

[0256] In addition, the expression "acquisition" or an expression equivalent thereto in the embodiment does not necessarily mean that the acquisition is performed according to the procedure described in the embodiment. For example, although it is described that the location information of the communication device 110 is used in the available frequency evaluation processing, it is not always necessary to use the information acquired in the registration procedure, and in a case where the location information is included in an available frequency inquiry procedure request, the location information may be used. In other words, the procedure for the acquisition described in the embodiment is an example, and the acquisition by other procedures is also allowed within the scope of the embodiment and within the scope of technical feasibility.

[0257] Furthermore, the information described as being possibly included in the response from the information processing device 200 to the communication device 110 may be actively reported from the information processing device 200 by a push method if possible. As a specific example, the available frequency information, the recommended communication parameter information, the radio wave transmission continuation denial notification, and the like may be reported by the push method.

[0258] <2-3-6. Various Procedures for Terminal>The description has been made mainly on the assumption of the processing in the communication device 110a. However, in some embodiments, not only the communication device 110a but also the terminal 120 and the communication device 110b can operate under the control of the information processing device 200. That is, processing in which the communication parameter is determined by the information processing device 200 is assumed. Even in such a case, basically, various procedures described in <2-3-1. Registration / initialization procedure> to <2-3-5. Supplementary Description of Various Procedures> described above can be used. However, unlike the communication device 110a, the terminal 120 and the communication device 110b need to use the frequency managed by the information processing device 200 for the backhaul link, and cannot perform the radio wave transmission without permission. Therefore, it is desirable to start backhaul communication for the purpose of accessing the information processing device 200 only after detecting the radio waves or an authorization signal transmitted by the communication device 110a (the communication device 110 capable of providing the wireless communication service, or a master communication device 110 of a master-secondary system).

[0259] On the other hand, the terminal 120 and the communication device 110b can also have allowable communication parameters configured for the purpose of the primary system protection under the control of the information processing device 200. However, the information processing device 200 cannot know the location information and the like of the devices in advance. The devices are also likely to have mobility. That is, the location information is dynamically updated. In a case where the location information is changed by a certain amount or more, re-registration in the information processing device 200 may be required in some cases depending on the laws and regulations.

[0260] In an operation form of a TVWS defined by the Office of communication (Ofcom) in consideration of such various use forms, operation forms, and the like of the terminal 120 and the communication device 110, the following two types of communication parameters are defined (see, for example, NPL 15).- Generic operational parameters- Specific operational parameters

[0261] The generic operational parameter is a communication parameter defined as a "parameter that can be used by all slave white space devices (WSDs) located within a coverage area of a predetermined master WSD (corresponding to the communication device 110)". As a feature, the generic operational parameter is calculated by the WSDB without using the location information of the slave WSD.

[0262] The generic operational parameter can be provided by unicast or broadcast from the communication device 110 that is already permitted to transmit the radio waves from the information processing device 200. For example, a broadcast signal represented by a contact verification signal (CVS) defined in FCC Part 15 Subpart H can be used. Alternatively, the generic operational parameter may be provided by a broadcast signal specific to the wireless interface. As a result, the terminal 120 and the communication device 110b can treat the generic operational parameter as the communication parameter used for the radio wave transmission for the purpose of accessing the information processing device 200.

[0263] The specific operational parameter is a communication parameter defined as a "parameter that can be used by a specific slave WSD". In other words, the specific operational parameter is a communication parameter calculated using the device parameter of the slave WSD corresponding to the terminal 120. As a feature, the specific operational parameter is calculated by the white space database (WSDB) using the location information of the slave WSD.

[0264] In addition, a CPE-CBSD handshake procedure adopted in the CBRS can be regarded as another form of the procedure related to the terminal 120 (see, for example, NPL 8). The CPE-CBSD does not have a wired backhaul link and accesses the Internet via the BTS-CBSD. Therefore, the permission for the radio wave transmission in the CBRS band cannot be acquired from the SAS without a special regulation or procedure. The CPE-CBSD handshake procedure allows the CPE-CBSD to perform the radio wave transmission with the same maximum EIRP and minimum necessary duty cycle as those of the terminal (EUD) until the permission for the radio wave transmission is acquired from the SAS. Accordingly, the communication device 110b configures transmission EIRP to the maximum EIRP of the terminal and then performs the wireless communication with the communication device 110a at the minimum necessary duty cycle, thereby constructing a link for acquiring the permission for the radio wave transmission from the information processing device 200. After the permission for the radio wave transmission is acquired, it is possible to use up to the maximum EIRP defined by the communication device within the range of the permission.

[0265] <2-3-7. Procedure Occurring between Information Processing Devices 200>(Information Exchange)The information processing device 200 can exchange management information with another information processing device 200. At least the following information is desirably exchanged.- Information regarding the communication device 110- Area information- Protection target system information

[0266] The information regarding the communication device 110 includes at least the registration information and communication parameter information of the communication device 110 operating under the permission of the information processing device 200. The registration information of the communication device 110 having no permitted communication parameter may be included.

[0267] The registration information of the communication device 110 is typically a device parameter of the communication device 110 registered in the information processing device 200 in the above-described registration procedure. Not all the pieces of registered information are necessarily exchanged. For example, information that may correspond to personal information does not need to be exchanged. Furthermore, when the registration information of the communication device 110 is exchanged, the registration information may be encrypted and exchanged, or the information may be exchanged after making a content of the registration information ambiguous. For example, information converted into a binary value or information signed using an electronic signature mechanism may be exchanged.

[0268] The communication parameter information of the communication device 110 is typically information regarding the communication parameter currently used by the communication device 110. At least information indicating the used frequency and the transmission power is desirably included. Other communication parameters may be included.

[0269] The area information is typically information indicating a predetermined geographical region. The information can include the area information with various attributes in various manners.

[0270] For example, the area information may include protection zone information of the communication device 110 serving as a high-priority secondary system, such as PAL protection area (PPA) in WINNF-TS-0112 (see, for example, NPL 14). The area information in this case can be expressed by, for example, a set of three or more coordinates indicating the geographical location. Furthermore, for example, in a case where a plurality of information processing devices 200 can refer to a common external database, the area information is expressed by a unique ID, and the actual geographical region can be referred to from the external database using the above ID.

[0271] Furthermore, for example, information indicating the coverage of the communication device 110 may be included. The area information in this case can also be expressed by, for example, a set of three or more coordinates indicating the geographical location. Furthermore, for example, the coverage is assumed to be a circle centered on the geographical location of the communication device 110, the coverage can also be expressed by information indicating a size of a radius. Furthermore, for example, in a case where a plurality of information processing devices 200 can refer to a common external database in which the area information is recorded, the information indicating the coverage is expressed by a unique ID, and the actual coverage can be referred to from the external database using the ID.

[0272] Furthermore, as another aspect, information regarding an area section determined in advance by an administration or the like can be included. Specifically, for example, it is possible to indicate a certain region by indicating an address. Furthermore, for example, a license area or the like can be similarly expressed.

[0273] Furthermore, as still another aspect, the area information does not necessarily have to express a planar area, and may express a three-dimensional space. For example, the area information may be expressed using a spatial coordinate system. In addition, for example, information indicating a predetermined closed space, such as the number of stories, a floor number, or a room number of a building may be used.

[0274] The protection target system information is, for example, information regarding the wireless communication system treated as the protection target, such as the above incumbent tier. Examples of a situation in which the information must be exchanged include a situation in which cross-border coordination is required. It is entirely conceivable that different protection targets exist for the same band between neighboring countries or regions. In such a case, the protection target system information can be exchanged between the information processing devices 200 in different countries or regions to which the information processing devices 200 belong as necessary.

[0275] As another aspect, the protection target system information can include information regarding a secondary licensee and information regarding a wireless system operated by the secondary licensee. The secondary licensee is specifically a lessee of the license, and for example, it is assumed that the secondary licensee borrows the PAL from an owner and operates the wireless communication system owned by the secondary licensee. In a case where the information processing device 200 independently performs rent management, the information regarding the secondary licensee and the information regarding the wireless communication system operated by the secondary licensee can be exchanged with another information processing device 200 for the purpose of protection.

[0276] The pieces of information can be directly or indirectly exchanged between the information processing devices 200 regardless of a decision making topology applied to the information processing device 200.

[0277] The pieces of information can be exchanged in various manners. An example thereof will be described below.- ID designation method- Period designation method- Region designation method- Dump method

[0278] The ID designation method is a method in which information corresponding to an ID assigned in advance to specify information managed by the information processing device 200 is acquired by using the ID. For example, it is assumed that the first information processing device 200-1 manages a communication device 110 called "ID: AAA". At this time, the second information processing device 200-2 designates "ID: AAA" for the first information processing device 200-1 and transmits an information acquisition request. After receiving the request, the first information processing device 200-1 performs information search for "ID: AAA", and reports information regarding the communication device 110 with "ID: AAA", for example, registration information communication parameter information, as a response.

[0279] The period designation method is a method in which information satisfying a predetermined condition can be exchanged in a specified period.

[0280] Examples of the predetermined condition include the presence or absence of information update. For example, in a case where the acquisition of the information regarding the communication device 110 in a specific period is designated by a request, the registration information of the communication device 110 newly registered within the specific period can be reported as a response. In addition, the registration information of the communication device 110 whose communication parameter has been changed within the specific period or the information regarding the communication parameter can also be reported as a response.

[0281] Examples of the predetermined condition include whether or not the information has been recorded by the information processing device 200. For example, in a case where the acquisition of the information regarding the communication device 110 in a specific period is designated in the request, the registration information or the information regarding the communication parameter recorded by the information processing device 200 within the specific period can be reported as a response. In a case where the information is updated within the specific period, the latest information within the specific period can be reported. Alternatively, an update history may be reported for each information.

[0282] In the region designation method, a specific region is designated, and the information regarding the communication device 110 belonging to the designated region is exchanged. For example, in a case where the acquisition of the information regarding the communication device 110 in the specific region is designated in the request, the registration information of the communication device 110 installed in the designated region or the information regarding the communication parameter can be reported as a response.

[0283] The dump method is a method of providing all the pieces of information recorded in the information processing device 200. At least the information regarding the communication device 110 and the area information are desirably provided by the dump method.

[0284] The above description of the information exchange between the information processing devices 200 is entirely based on a pull method. That is, the information corresponding to the parameter designated in the request is provided as a response, and the information exchange between the information processing devices 200 can be implemented by, for example, an HTTP GET method. However, the information exchange is not limited to the pull method, and the information may be actively provided to another information processing device 200 by the push method. The push method can be implemented by, for example, an HTTP POST method.

[0285] (Command / Request Procedure)The information processing devices 200 may issue a command or make a request with each other. Specifically, as an example, the reconfiguration of the communication parameter of the communication device 110 can be cited. For example, in a case where it is determined that a first communication device 110-1 managed by the first information processing device 200-1 receives a large amount of interference from a second communication device 110-2 managed by the second information processing device 200-2, the first information processing device 200-1 may request the second information processing device 200-2 to change the communication parameter of the second communication device 110-2.

[0286] Another example is the reconfiguration of the area information. For example, in a case where incompletion is found in calculation of coverage information and the protection zone information regarding the second communication device 110-2 managed by the second information processing device 200-2, the first information processing device 200-1 may request the second information processing device 200-2 to reconfigure the area information. In addition, the area information reconfiguration request may be made for various reasons.

[0287] <2-3-8. Information Transmission Means>The notification (signaling) between the entities described above can be implemented via various media. It is a matter of course that the notification is not limited thereto.

[0288] (Signaling between Information Processing Device 200 and Communication Device 110)The notification from the communication device 110 to the information processing device 200 may be performed, for example, in an application layer. For example, the notification may be performed using a hypertext transfer protocol (HTTP). The signaling can be performed by describing required parameters in a message body of the HTTP according to a predetermined manner. Furthermore, in a case where the HTTP is used, the notification from the information processing device 200 to the communication device 110 is also performed according to an HTTP response mechanism.

[0289] (Signaling between Communication Device 110 and Terminal 120)The E-UTRA or 5G NR will be described as an example. The notification from the communication device 110 to the terminal 120 may be performed by using, for example, at least one of radio resource control (RRC) signaling, system information (SI), and downlink control information (DCI). In addition, examples of a downlink physical channel 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 the notification may be performed using at least one of the downlink physical channels.

[0290] 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). Alternatively, the notification may be performed using an uplink physical channel (physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH), or physical random access channel (PRACH)).

[0291] The signaling is not limited to the physical layer signaling described above and may be performed in a higher layer. For example, at the time of execution in the application layer, the signaling may be performed by describing the required parameters in the message body of the HTTP according to a predetermined manner.

[0292] (Signaling between Terminals 120)The E-UTRA or 5G NR will be described as an example with reference to Fig. 7. Fig. 7 is a diagram illustrating a fourth specific example of a basic principle of the communication system according to the embodiment of the present disclosure. Fig. 7 illustrates an example of a flow of signaling in a case where the D2D or vehicle-to-everything (V2X), which is communication between the terminals 120, is assumed as the communication of the secondary system. The D2D or V2X which is communication between the terminals 120 may be performed using a physical sidelink channel (physical sidelink control channel (PSCCH), physical sidelink shared channel (PSSCH), or physical sidelink broadcast channel (PSBCH)).

[0293] In the example of Fig. 7, the information processing device 200-1 as a master calculates the communication parameter and notifies the communication device 110-1 including a secondary information processing device 200-3 of the calculated communication parameter. At this time, the information processing device 200-1 may determine and report a value of the communication parameter, or may determine and report a condition indicating a range or the like of the communication parameter. The communication device 110-1 acquires the communication parameter and configures the communication parameter to be used by the communication device 110-1. Then, the communication parameter for the terminal 120 (not illustrated) subordinate to the communication device 110-1 is reported to the terminal 120. Each terminal 120 subordinate to the communication device 110 acquires and configures the communication parameter for the terminal 120. Then, the communication with another terminal 120 is performed.

[0294] Furthermore, in the example of Fig. 7, the information processing device 200-1 as the master calculates the communication parameter and notifies the intermediate device 130 including the secondary information processing device 200-2 of the calculated communication parameter. At this time, the information processing device 200-1 may determine and report a value of the communication parameter, or may determine and report a condition indicating a range or the like of the communication parameter. The intermediate device 130 acquires the communication parameter and notifies the communication device 110-2, a communication device 110-3, and a communication device 110-4 of the communication parameter. The communication device 110-2, the communication device 110-3, and the communication device 110-4 acquire the communication parameter, and configure the communication parameters to be used by the communication device 110-2, the communication device 110-3, and the communication device 110-4. Then, the communication parameters for the communication device 110-2, the communication device 110-3, and the terminal 120 (not illustrated) subordinate to the communication device 110-4 are reported to the terminal 120. Each of the terminals 120 subordinate to the communication device 110-2, the communication device 110-3, and the communication device 110-4 acquires and configures the communication parameter for the terminal 120. Then, the communication with another terminal 120 is performed.

[0295] The communication parameter in a case where a target frequency channel for frequency sharing is used in sidelink (direct communication between the terminals 120) may be reported, acquired, or configured in association with the resource pool for sidelink in the target frequency channel. The resource pool is a radio resource for sidelink configured by a specific frequency resource or time resource. Examples of the frequency resource include the resource block and the component carrier. Examples of the time resource include a radio frame, a subframe, a slot, and a mini-slot. In a case where the resource pool is configured in the target frequency channel for frequency sharing, the resource pool is configured in the terminal 120 by the communication device 110 based on at least one of the RRC signaling, the system information, and the downlink control information. Then, the communication parameter to be applied in the resource pool and sidelink is also configured in the terminal 120 by the communication device 110 based on at least one of the RRC signaling, the system information, and the downlink control information from the communication device 110 to the terminal 120. The notification of the configuration of the resource pool and the notification of the communication parameter to be used in sidelink may be performed simultaneously or individually.

[0296] <<3. Overall Configuration Example of Information Processing System>>A configuration example of the entire information processing system SYS1 will be described with reference to Fig. 8. Fig. 8 is a diagram illustrating the configuration example of the entire information processing system SYS1 according to the embodiment of the present disclosure. Fig. 8 illustrates the configuration example of the information processing system SYS1 including the primary system in addition to the secondary system.

[0297] Here, the primary system is an incumbent system in a certain frequency band, and preferentially uses the frequency band. The primary system includes a first communication device 110P and a first terminal 120P (a first terminal 120P_1 and a first terminal 120P_2 in the example of Fig. 8).

[0298] The secondary system includes the communication devices 110-1 to 110-3 and terminals 120-1 to 120-5. The communication device 110 included in the secondary system is also referred to as a second communication device 110S in order to be distinguished from the first communication device 110P included in the primary system. Similarly, the terminal 120 included in the secondary system is also referred to as a second terminal 120S in order to be distinguished from the first terminal 120P included in the primary system.

[0299] Fig. 8 illustrates a configuration in which the primary system includes one first communication device 110P and two first terminals 120P, but the number of first communication devices 110P and the number of first terminals 120P is not limited to those in the example of Fig. 8. For example, there may be a plurality of first communication devices 110P. Furthermore, the number of first terminals 120P may be one or three or more.

[0300] Similarly, the number, configuration, and the like of each device included in the secondary system are not limited to the example of Fig. 8. For example, the communication device 110-4 and terminals 120-6 and 120-7 illustrated in Fig. 1 may be included in the secondary system.

[0301] The information notification device 400 performs communication with the device (the first communication device 110P and / or the first terminal 120P) in the primary system. The information notification device 400 notifies the information processing device 200 of information regarding the frequency use of the first communication device 110P and / or the first terminal 120P. Such a notification may be made periodically or irregularly.

[0302] In Fig. 8, the first communication device 110P and / or the first terminal 120P is not directly connected to the information notification device 400. This means that means by which the information notification device 400 acquires the information regarding the frequency use of the first communication device 110P and / or the first terminal 120P is not limited, that is, the information notification device 400 may acquire the information using any means.

[0303] The information processing device 200 instructs the second communication device 110S and / or the second terminal 120S to perform the secondary use of the frequency band used by the primary system by using the information or the like acquired from the primary system via the information notification device 400. The second communication device 110S and / or the second terminal 120S performs the secondary use of the frequency band according to the instruction from the information processing device 200.

[0304] <3-1. Configuration Example of Information Processing Device>Fig. 9 is a block diagram illustrating a configuration example of the information processing device 200 according to the embodiment of the present disclosure. The information processing device 200 includes a communication unit 210, a storage unit 220, and a control unit 230. Note that the configuration illustrated in Fig. 9 is a functional configuration, and a hardware configuration may be different from the configuration. Further, the functions of the information processing device 200 may be distributed to and implemented in a plurality of physically separated components.

[0305] The communication unit 210 is a communication interface for performing communication with another device. The communication unit 210 may be a network interface or may be an equipment connection interface. For example, the communication unit 210 may be a local area network (LAN) interface such as a network interface card (NIC), or may be a universal serial bus (USB) interface including a USB host controller, a USB port, and the like. Further, the communication unit 210 may be a wired interface or a wireless interface. The communication unit 210 functions as communication means of the information processing device 200. The communication unit 210 performs communication with the communication device 110 under the control of the control unit 230.

[0306] The storage unit 220 is a storage device, from which data can be read and in which data can be written, such as a dynamic random access memory (DRAM), a static random access memory (SRAM), a flash memory, or a hard disk.

[0307] The control unit 230 is a controller that controls each unit of the information processing device 200. The control unit 230 is implemented by, for example, a processor such as a central processing unit (CPU) or a micro processor unit (MPU). For example, the control unit 230 is implemented in a manner in which the processor executes various programs stored in the storage device inside the information processing device 200 by using a RAM or the like as a work area. Note that the control unit 230 may be implemented by an integrated circuit such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA). The CPU, the MPU, the ASIC, and the FPGA can all be regarded as the controller.

[0308] <3-2. Configuration Example of Communication Device>The communication device 110 is a wireless communication device (wireless system) that performs wireless communication with another wireless communication device. The communication device 110 may wirelessly communicate with the terminal 120 via the relay station, or may directly wirelessly communicate with the terminal 120. The communication device 110 is a type of information processing device. If the communication device 110 is movable, the communication device 110 is also a type of "movable communication device" of the present embodiment.

[0309] The communication device 110 may be, for example, a device corresponding to the wireless base station (node B, eNB, gNB, 6GNB, or the like) or the radio access point. The communication device 110 may be a wireless relay station. Furthermore, the communication device 110 may be an optical feeder device which is called a remote radio head (RRH). The communication device 110 may also be a reception station such as a field pickup unit (FPU). Furthermore, the communication device 110 may be an integrated access and backhaul (IAB) donor node or IAB relay node that provides a radio access link and a radio backhaul link by time division multiplexing, frequency division multiplexing, or spatial division multiplexing. Here, a description will be given assuming that the communication device 110 is a wireless base station.

[0310] A radio access technology used by the communication device 110 may be a cellular communication technology. The radio access technology used by the communication device 110 may be a wireless LAN technology. The radio access technology used by the communication device 110 may be a low power wide area (LPWA) communication technology. However, the radio access technology used by the communication device 110 is not limited thereto, and may be another radio access technology. The wireless communication used by the communication device 110 may be wireless communication using millimeter waves or wireless communication using terahertz waves. Further, the wireless communication used by the communication device 110 may be wireless communication using radio waves or (optical) wireless communication using infrared rays or visible light. Further, the communication device 110 may be capable of non-orthogonal multiple access (NOMA) communication with the terminal 120. Here, the NOMA communication is communication (transmission, reception, or both) using a non-orthogonal resource. The communication device 110 may be able to perform the NOMA communication with another communication device 110.

[0311] The communication devices 110 may be able to communicate with each other via a base station-core network interface (for example, NG interface or S1 interface). This interface may be either a wired interface or a wireless interface. Furthermore, the communication device 110 may be able to communicate with another base station (another communication device 110) via an inter-base station interface (for example, Xn Interface, X2 Interface, or F1 Interface). This interface may be either a wired interface or a wireless interface.

[0312] The concept of the base station (also referred to as a base station device) includes not only a donor base station but also a relay base station (also referred to as a relay station). For example, the relay base station may be any one of an RF repeater, a smart repeater, and an intelligent surface. Further, the concept of the base station includes not only a structure having the function of the base station, but also a device installed in the structure.

[0313] The structure is, for example, a building such as a high-rise building, a house, a steel tower, a station facility, an airport facility, a port facility, an office building, a school building, a hospital, a factory, a commercial facility, or a stadium. Note that the concept of the structure includes not only a building, but also a non-building structure such as a tunnel, a bridge, a dam, a fence, or a steel column, and a facility such as a crane, a gate, or a windmill. In addition, the concept of the structure includes not only a structure on land (on the ground in a narrow sense) or in the ground, but also a structure on the water, such as a landing stage or Mega-Float, or a structure underwater such as an oceanographical observation facility. The base station can be rephrased as the information processing device.

[0314] The communication device 110 may be a donor station or a relay station. Furthermore, the communication device 110 may be a fixed station or a mobile station. The mobile station is a wireless communication device (for example, the base station) configured to be movable. Here, the communication device 110 may be a device installed on a mobile body, or may be the mobile body itself. For example, a relay station having mobility can be regarded as the communication device 110 as the mobile station. In addition, a device that originally has mobility, such as a vehicle, an unmanned aerial vehicle (UAV) typified by a drone, or a smartphone, and has the function of the base station (at least a part of the function of the base station) also corresponds to the communication device 110 as the mobile station.

[0315] Here, the mobile body may be a mobile terminal such as a smartphone or a mobile phone. The mobile body may be a mobile body (for example, a vehicle such as an automobile, a bicycle, a bus, a truck, a motorcycle, a train, or a linear motor car) that moves on land (on the ground in a narrow sense), or may be a mobile body (for example, subway) that moves in the ground (for example, in a tunnel). Further, the mobile body may be a mobile body (for example, a vessel such as a passenger ship, a cargo ship, or a hovercraft) that moves on the water, or may be a mobile body (for example, a submersible boat such as a submersible, a submarine, or an unmanned underwater vehicle) that moves underwater. The mobile body may be a mobile body that moves in the atmosphere (for example, an aircraft such as an airplane, an airship, or a drone).

[0316] Furthermore, the communication device 110 may be a ground base station (ground station) installed on the ground. For example, the communication device 110 may be a base station arranged in a structure on the ground, or may be a base station installed in a mobile body moving on the ground. The communication device 110 may be an antenna installed in a structure such as a building and a signal processing device connected to the antenna. The communication device 110 may be a structure or a mobile body itself. The phrase "on the ground" not only means on land (on the ground in a narrow sense), but also means in the ground, on the water, and underwater in a broad sense. The communication device 110 is not limited to a ground base station. In a case where the communication system is a satellite communication system, the communication device 110 may be an aircraft station. From the perspective of a satellite station, an aircraft station located on the earth is a ground station.

[0317] The communication device 110 is not limited to a ground station. The communication device 110 may be a non-ground base station device (non-ground station) capable of floating in the air or space. The communication device 110 may be an aircraft station or a satellite station.

[0318] As described above, the communication device 110 may be a relay station. The relay station is, for example, an aviation station or an earth station. The relay station device can be regarded as a type of the above-described relay device. The aviation station is a radio station installed on the ground or on a mobile body moving on the ground to perform communication with the aircraft station device. Further, the earth station is a radio station located on the earth (including in the air) to perform communication with the satellite station device. The earth station may be a large earth station or a small earth station such as a very small aperture terminal (VSAT).

[0319] The earth station may be a VSAT control earth station (also referred to as a master station or a HUB station) or a VSAT earth station (also referred to as a slave station). Further, the earth station may be a radio station installed in a mobile body that moves on the ground. Examples of an earth station mounted on a vessel can include earth stations on board vessels (ESV). Further, the earth station may also include an aircraft earth station installed on an aircraft (including a helicopter) and performing communication with a satellite station. Further, the earth station may include an aeronautical earth station that is installed in a mobile body that moves on the ground and performs communication with an aircraft earth station via a satellite station. Note that the relay station device may be a portable mobile radio station that performs communication with a satellite station or an aircraft station.

[0320] A size of the coverage of the communication device 110 may be relatively large like a macro cell or may be relatively small like a pico cell. The size of the coverage of the communication device 110 may be extremely small like a femtocell. The communication device 110 may have a beamforming function. The communication device 110 may form a cell or a service area for each beam. In addition or alternatively, the communication device 110 may have a function of delivering a desired wave to a pinpoint at a predetermined point by further considering distance information from the antenna of the communication device 110 in addition to beamforming for giving directivity to a beam. This function may be called beam focusing or point forming.

[0321] Fig. 10 is a block diagram illustrating a configuration of the communication device 110 according to the embodiment of the present disclosure. The communication device 110 includes a wireless communication unit 111, a storage unit 112, and a control unit 113. However, the configuration illustrated in Fig. 10 is a functional configuration, and a hardware configuration may be different from the configuration. Further, the functions of the communication device 110 may be distributed to and implemented in a plurality of physically separated components.

[0322] The wireless communication unit 111 is a signal processing unit for wirelessly communicating with another wireless communication device. The wireless communication unit 111 is controlled by the control unit 113. The wireless communication unit 111 supports one or more radio access schemes. The wireless communication unit 111 may support at least one of the NR, the LTE, and the sixth generation (6G). The wireless communication unit 111 may support W-CDMA, cdma2000, and the like in addition to the NR, the LTE, and the 6G. Furthermore, the wireless communication unit 111 may support an automatic retransmission technology such as hybrid automatic repeat request (HARQ).

[0323] The wireless communication unit 111 includes a transmission processing unit 1111, a reception processing unit 1112, and an antenna 1113. The wireless communication unit 111 may include a plurality of transmission processing units 1111, a plurality of reception processing units 1112, and a plurality of antennas 1113. In a case where the wireless communication unit 111 supports a plurality of radio access schemes, each unit of the wireless communication unit 111 can be individually configured for each radio access scheme. For example, the transmission processing unit 1111 and the reception processing unit 1112 may be individually configured for each of the LTE, the NR, and the 6G. The antenna 1113 may be implemented by a plurality of antenna elements, for example, a plurality of patch antennas. The wireless communication unit 111 may have a beamforming function. For example, the wireless communication unit 111 may have a polarization beamforming function (or a polarization beamforming function using dual polarization in polarization directions of 45 degrees and -45 degrees from a vertical direction) using vertically polarized waves (V-polarized waves) and horizontally polarized waves (H-polarized waves).

[0324] The transmission processing unit 1111 performs transmission processing for the downlink control information and downlink data. For example, the transmission processing unit 1111 codes the downlink control information and the downlink data input from the control unit 113 by using a coding method such as block coding, convolutional coding, or turbo coding. Here, coding with a polar code and coding with a low density parity check code (LDPC code) may be performed. Then, the transmission processing unit 1111 modulates the coded bit by a predetermined modulation scheme such as binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), 16-quadrature amplitude modulation (QAM), 64-QAM, or 256-QAM. In this case, signal points on constellation do not necessarily have to be equidistant. The constellation may be non-uniform constellation (NUC). Then, the transmission processing unit 1111 multiplexes a modulation symbol of each channel and a downlink reference signal, and maps them to a predetermined resource element. Then, the transmission processing unit 1111 performs various types of signal processing on the multiplexed signal. For example, the transmission processing unit 1111 performs processing such as conversion into the frequency domain by fast Fourier transform, addition of a guard interval (cyclic prefix), generation of a baseband digital signal, conversion into an analog signal, quadrature modulation, up-conversion, removal of extra frequency components, or power amplification. A signal generated by the transmission processing unit 1111 is transmitted from the antenna 1113.

[0325] The reception processing unit 1112 processes an uplink signal received via the antenna 1113. For example, the reception processing unit 1112 performs, on the uplink signal, down-conversion, removal of an unnecessary frequency component, a control of an amplification level, quadrature demodulation, conversion into a digital signal, removal of a guard interval (cyclic prefix), extraction of a frequency domain signal by fast Fourier transform, and the like. Then, the reception processing unit 1112 separates an uplink channel such as a physical uplink shared channel (PUSCH) or physical uplink control channel (PUCCH) and an uplink reference signal from a signal subjected to these steps of processing. Further, the reception processing unit 1112 performs demodulation of a reception signal for a modulation symbol of the uplink channel by using a modulation scheme such as binary phase shift keying (BPSK) or quadrature phase shift keying (QPSK). The modulation scheme used for the demodulation may be 16-quadrature amplitude modulation (QAM), 64-QAM, or 256-QAM. In this case, signal points on constellation do not necessarily have to be equidistant. The constellation may be non-uniform constellation (NUC). Then, the reception processing unit 1112 performs decoding processing on a coded bit of the demodulated uplink channel. Decoded uplink data and uplink control information are output to the control unit 113.

[0326] The antenna 1113 is an antenna device that mutually converts a current and a radio wave. The antenna 1113 may be implemented by one antenna element, for example, one patch antenna. Furthermore, the antenna 1113 may be implemented by a plurality of antenna elements (for example, a plurality of patch antennas). In a case where the antenna 1113 is implemented by a plurality of antenna elements, the wireless communication unit 111 may have a beamforming function. The wireless communication unit 111 may be configured to generate a directional beam by controlling directivity of a radio signal using the plurality of antenna elements. The antenna 1113 may be a dual-polarized antenna. In a case where the antenna 1113 is a dual-polarized antenna, the wireless communication unit 111 may use the vertically polarized waves (V-polarized waves) and the horizontally polarized waves (H-polarized waves) (or the dual polarization in the polarization directions of 45 degrees and -45 degrees from the vertical direction) when transmitting the radio signal. The wireless communication unit 111 may control the directivity of the radio signal transmitted using the vertically polarized waves and the horizontally polarized waves (or the dual polarization in the polarization directions of 45 degrees and -45 degrees from the vertical direction). Furthermore, the wireless communication unit 111 may transmit and receive a spatially multiplexed signal via a plurality of layers including a plurality of antenna elements.

[0327] The storage unit 112 is a storage device, from and in which reading and writing can be performed, such as a DRAM, an SRAM, a flash memory, or a hard disk.

[0328] The control unit 113 is a controller that controls each unit of the communication device 110. The control unit 113 controls the wireless communication unit 111 to perform the wireless communication with another wireless communication device. The control unit 113 may be implemented by a processor such as a CPU or an MPU. For example, the control unit 113 is implemented in a manner in which the processor executes various programs stored in the storage device inside the communication device 110 by using a RAM or the like as a work area. The control unit 113 may be implemented by an integrated circuit such as an ASIC or a FPGA. Furthermore, the control unit 113 may be implemented by a graphics processing unit (GPU). The CPU, the MPU, the ASIC, the FPGA, and the GPU can all be regarded as the controller. The control unit 113 may be implemented by a plurality of physically separated objects. For example, the control unit 113 may include a plurality of semiconductor chips.

[0329] In some embodiments, the communication device 110 may be implemented by a set of a plurality of physical or logical devices. As an example, the communication device 110 of the present embodiment may be distinguished into a plurality of devices such as a baseband unit (BBU) and a radio unit (RU). The communication device 110 may be interpreted as a set of the plurality of devices. In addition, the base station may be either the BBU or the RU, or may be both. The BBU and the RU may be connected by a predetermined interface (for example, an enhanced common public radio interface (eCPRI)).

[0330] The RU may be rephrased as a remote radio unit (RRU) or a radio dot (RD). The RU may correspond to a gNB distributed unit (gNB-DU) described below. The BBU may correspond to a gNB central unit (gNB-CU) described below. The RU may be a device integrally formed with an antenna. The antenna of the communication device 110 (for example, the antenna integrally formed with the RU) may adopt an advanced antenna system and support MIMO (for example, FD-MIMO) or beamforming. The antenna of the communication device 110 may include, for example, 64 transmission antenna ports and 64 reception antenna ports.

[0331] The antenna mounted on the RU may be an antenna panel implemented by one or more antenna elements, and the RU may be mounted with one or more antenna panels. The RU may be equipped with two types of antenna panels, a horizontally polarized antenna panel and a vertically polarized antenna panel. The RU may be equipped with two types of antenna panels, that is, a right-hand circularly polarized antenna panel and a left-hand circularly polarized antenna panel, or an antenna panel with the polarization direction of 45 degrees from the vertical direction and an antenna panel with the polarization direction of -45 degrees from the vertical direction. A plurality of antennas having the plurality of polarization directions may be mounted on one antenna panel. The RU may form and control an independent beam for each antenna panel.

[0332] The plurality of communication devices 110 may be connected to each other. One or more communication devices 110 may be included in a radio access network (RAN). At this time, the communication device 110 may be simply referred to as a RAN, a RAN node, an access network (AN), an AN node, or the like. The RAN in the LTE may be referred to as an enhanced universal terrestrial RAN (EUTRAN). The RAN in the NR may be referred to as an NGRAN. In addition, the RAN in the 6G may be referred to as a 6GRAN. The RAN in the W-CDMA (UMTS) may be referred to as a UTRAN.

[0333] The communication device 110 in the LTE may be referred to as an evolved node B (eNodeB) or an eNB. At this time, the EUTRAN includes one or more eNodeBs (eNBs). Further, the communication device 110 in the NR may be referred to as a gNodeB or a gNB. At this time, the NGRAN includes one or more gNBs. A base station in the 6G may be referred to as a 6GNodeB, a 6gNodeB, a 6GNB, or a 6gNB. At this time, the 6GRAN includes one or more 6GNBs. The EUTRAN may include a gNB (en-gNB) connected to the core network (EPC) in the communication system (EPS) of the LTE. The NGRAN may include an ng-eNB connected to the core network (5GC) in the 5G communication system (5GS).

[0334] In a case where the communication device 110 is an eNB, a gNB, a 6GNB, or the like, the communication device 110 may be referred to as 3GPP access. In addition, in a case where the communication device 110 is a radio access point, the communication device 110 may be referred to as a non-3GPP access. Furthermore, the communication device 110 may be an optical feeder device which is called a remote radio head (RRH). In addition, in a case where the communication device 110 is a gNB, the communication device 110 may be a combination of the gNB-CU and the gNB-DU described above, or may be any one of the gNB-CU and the gNB-DU.

[0335] Here, the gNB-CU hosts a plurality of higher layers (for example, the radio resource control (RRC), service data adaptation protocol (SDAP), and packet data convergence protocol (PDCP)) in an access stratum for communication with the UE. On the other hand, the gNB-DU hosts a plurality of lower layers (for example, radio link control (RLC), medium access control (MAC), and physical layer (PHY)) in the access stratum. That is, among messages / information to be described below, the RRC signaling (semi-static notification) may be generated by the gNB-CU, while an MAC control element (MAC CE) or DCI (dynamic notification) may be generated by the gNB-DU. Alternatively, in an RRC configuration (semi-static notification), for example, some configurations such as IE:cellGroupConfig may be generated by the gNB-DU, and the remaining configurations may be generated by the gNB-CU. These configurations may be transmitted and received through the F1 interface described below.

[0336] The communication device 110 may be configured to be able to perform communication with another base station. In a case where the plurality of communication devices 110 are eNBs or a combination of an eNB and an en-gNB, the communication devices 110 may be connected by the X2 interface. In a case where the plurality of communication devices 110 are gNBs or a combination of a gn-eNB and a gNB, the communication devices 110 may be connected by the Xn interface. In a case where the plurality of communication devices 110 are a combination of a gNB-CU and a gNB-DU, the communication devices 110 may be connected by the F1 interface described above. A message / information (for example, the RRC signaling, the MAC control element (MAC CE), or the downlink control information (DCI)) described below may be transmitted among the plurality of communication devices 110 via, for example, the X2 interface, the Xn interface, or the F1 interface.

[0337] A cell provided by the communication device 110 may be called a serving cell. The concept of the serving cell includes a primary cell (PCell) and a secondary cell (SCell). In a case where the dual connectivity is provided to the terminal 120, the PCell and zero or one or more SCells provided by a master node (MN) may be referred to as a master cell group. Examples of the dual connectivity include EUTRA-EUTRA dual connectivity, EUTRA-NR dual connectivity (ENDC), EUTRA-NR dual connectivity with 5GC, NR-EUTRA dual connectivity (NEDC), and NR-NR dual connectivity. Further, examples of the dual connectivity include NR-6G dual connectivity and 6G-NR dual connectivity.

[0338] The serving cell may include a primary secondary cell or a primary SCG Cell (PSCell). In a case where the dual connectivity is provided to the terminal 120, the PSCell and zero or one or more SCells provided by a secondary node (SN) are referred to as a secondary cell group (SCG). Unless specially configured (for example, the PUCCH on the SCell), the PUCCH is transmitted by the PCell and the PSCell, not by the SCell. A radio link failure is detected by the PCell and the PSCell, and is not detected (does not have to be detected) by the SCell. Since the PCell and the PSCell have a special role in the serving cell as described above, the PCell and the PSCell are also called special cells (SpCells).

[0339] One downlink component carrier and one uplink component carrier may be associated with one cell. A system bandwidth corresponding to one cell may be divided into a plurality of bandwidth parts (BWPs). Here, one or more BWPs may be configured for the terminal 120 and one bandwidth part may be used for the terminal 120 as an active BWP. Radio resources that can be used by the terminal 120, such as a frequency band, numerology (subcarrier spacing), and slot configuration, may be different for each cell, each component carrier, or each BWP.

[0340] <3-3. Configuration of Terminal>The terminal 120 is a communication device (wireless system) that performs wireless communication with another device. The terminal 120 is a type of information processing device.

[0341] The terminal 120 of the present embodiment is typically a mobile communication device. The mobile communication device is a movable wireless communication device (that is, a portable / mobile wireless communication device). For example, the mobile communication device is a flyable communication device (flying communication device). Alternatively, the mobile communication device is a communication device (traveling communication device) capable of traveling on the ground. In the following description, not only the mobile wireless communication device but also the portable wireless communication device is referred to as the mobile communication devices.

[0342] In a case where the terminal 120 is the mobile communication device, the terminal 120 may be a wireless communication device installed in the mobile body or may be the mobile body itself. The terminal 120 may be a vehicle that moves on a road, such as an automobile, a bus, a truck, or a motorcycle, or a wireless communication device mounted on the vehicle. The mobile body may be a mobile terminal, or may be a mobile body that moves on land (on the ground in a narrow sense), in the ground, on water, or under water. Furthermore, the mobile body may be a mobile body that moves inside the atmosphere, such as an aircraft, an airship, a balloon, or a helicopter, or may be a mobile body that moves outside the atmosphere, such as an artificial satellite. The mobile body may be an unmanned aerial vehicle (UAV) such as a drone. Furthermore, the terminal 120 may be a wireless communication device mounted on the mobile body.

[0343] The terminal 120 may be another non-ground communication device (non-ground station). The non-ground communication device is a communication device capable of floating in the air or space. At this time, the terminal 120 may be an aircraft station or a satellite station.

[0344] The aircraft station is a wireless communication device capable of floating in the atmosphere, such as an aircraft. The aircraft station may be a device mounted on an aircraft or the like, or may be the aircraft itself. The concept of the aircraft includes not only a heavy aircraft such as an airplane or a glider, but also a light aircraft such as a balloon or an airship. The concept of the aircraft includes not only the heavy aircraft and the light aircraft, but also a rotary-wing aircraft such as a helicopter or an autogyro. The aircraft station (or the aircraft on which the aircraft station is mounted) may be an unmanned aircraft such as a drone.

[0345] The concept of the unmanned aircraft also includes an unmanned aircraft system (UAS) and a tethered UAS. The concept of the unmanned aircraft includes a Lighter than Air UAS (LTA) and a Heavier than Air UAS (HTA). The concept of the unmanned aircraft also includes high altitude UAS platforms (HAPs).

[0346] The satellite station is a satellite station capable of floating outside the atmosphere. The satellite station may be a device mounted on a space mobile body such as an artificial satellite, or may be the space mobile body itself. The space mobile body is a mobile body that moves outside the atmosphere. Examples of the space mobile body include artificial bodies such as artificial satellites, spacecraft, space stations, and probes. A satellite that serves as the satellite station may be any one of a low earth orbiting (LEO) satellite, a medium earth orbiting (MEO) satellite, a geostationary earth orbiting (GEO) satellite, or a highly elliptical orbiting (HEO) satellite. The satellite station may be a device mounted on the LEO satellite, the MEO satellite, the GEO satellite, or the HEO satellite.

[0347] In addition, any form of information processing device (computer) can be adopted as the terminal 120. For example, the terminal 120 may be a mobile terminal such as a mobile phone, a smart device (smartphone or tablet), a personal digital assistant (PDA), or a notebook personal computer (PC). Furthermore, the terminal 120 may be an imaging device (for example, a camcorder) having a communication function. Furthermore, the terminal 120 may be a motorcycle, a moving relay vehicle, or the like on which the communication equipment such as the field pickup unit (FPU) is mounted. Furthermore, the terminal 120 may be a wearable device such as a smart watch.

[0348] Furthermore, the terminal 120 may be an xR device such as an augmented reality (AR) device, a virtual reality (VR) device, or a mixed reality (MR) device. At this time, the xR device may be a glasses-type device such as AR glasses or MR glasses, or may be a head-mounted device such as a VR head-mounted display. In a case where the terminal 120 is the xR device, the terminal 120 may be a standalone device including only a user wearing portion (for example, an eyeglass portion). Furthermore, the terminal 120 may be a terminal interlocking device including the user wearing portion (for example, the eyeglass portion) and a terminal portion (for example, the smart device) interlocked with the portion.

[0349] The terminal 120 is not limited to the movable communication device (portable / mobile communication device). The terminal 120 may be a fixed communication device installed in a structure. The terminal 120 may be a sensor installed in a machine of a factory or a building like so-called machine type communication (MTC). In the example of Fig. 7, the terminal 120 is the fixed communication device.

[0350] Furthermore, the terminal 120 may be a machine-to-machine (M2M) device or an Internet of Things (IoT) device. Furthermore, the terminal 120 may be a device having the relay communication function as represented by the D2D and vehicle-to-everything (V2X). Further, the terminal 120 may be equipment that is called customer premises equipment (CPE) used in a radio backhaul or the like. In addition, the communication device 110 described below can also be regarded as a type of the terminal 120. If the communication function is provided, the information processing device 200 described below can also be regarded as a type of the terminal 120.

[0351] The terminal 120 may be capable of the non-orthogonal multiple access (NOMA) communication with the communication device 110. The terminal 120 may be able to use an automatic retransmission technology such as the hybrid automatic repeat request (HARQ) when communicating with other devices. The terminal 120 may be capable of sidelink communication with another terminal 120. The terminal 120 may be able to use the automatic retransmission technology such as the HARQ when performing the sidelink communication. The terminal 120 may be able to perform the NOMA communication when performing the sidelink communication with another terminal 120. The terminal 120 may be capable of low power wide area (LPWA) communication with another wireless communication device such as the communication device 110. The wireless communication used by the terminal 120 may be wireless communication using millimeter waves. The wireless communication used by the terminal 120 includes the sidelink communication, may be wireless communication using radio waves, or may be (optical) wireless communication using infrared rays or visible light.

[0352] The terminal 120 may be able to perform communication by being connected to the plurality of communication devices 110 or a plurality of cells at the same time. In a case where one communication device 110 supports a communication area via the plurality of cells (for example, the pCell or sCell), the plurality of cells can be bundled to perform communication between the communication device 110 and the terminal 120 by using a carrier aggregation (CA) technology, a dual connectivity (DC) technology, a multi-connectivity (MC) technology, or the like. Alternatively, the terminal 120 and the plurality of communication devices 110 may perform communication with each other by a coordinated multi-point transmission and reception (CoMP) technology through the cells of different communication devices 110.

[0353] The terminal 120 may be a relay terminal that relays communication to a remote terminal. The terminal 120 may be referred to as a user equipment, a user terminal, a user station, a mobile terminal, a mobile station, or the like. The terminal 120 may be referred to as, for example, an MTC UE, an NB-IoT UE, or a Cat.M UE. In addition, the terminal 120 may be referred to as a client device.

[0354] In the present embodiment, unless otherwise specified, the terminal 120 corresponds to an entity that terminates the wireless link using the frequency that requires permission of the information processing device 200. However, the terminal 120 can perform an operation equivalent to that of the communication device depending on a function of the terminal 120 or an applied network topology. In other words, when the technology disclosed in the present embodiment is implemented, the communication device 110 may be referred to as the terminal 120 or the terminal 120 may be referred to as the communication device 110 according to the network topology.

[0355] Fig. 11 is a diagram illustrating a configuration of the terminal 120 according to the embodiment of the present disclosure. The terminal 120 includes a wireless communication unit 121, a storage unit 122, and a control unit 123. The configuration illustrated in Fig. 11 is a functional configuration, and a hardware configuration may be different from the configuration. Further, the functions of the terminal 120 may be distributed to and implemented in a plurality of physically separated components.

[0356] The wireless communication unit 121 is a signal processing unit for wirelessly communicating with another wireless communication device. The wireless communication unit 121 is controlled by the control unit 123. The wireless communication unit 121 supports one or more radio access schemes. The wireless communication unit 121 may correspond to at least one of the NR, the LTE, and the 6G. The wireless communication unit 121 may support the W-CDMA, the cdma2000, and the like in addition to the NR, the LTE, and the 6G. Furthermore, the wireless communication unit 121 may support the automatic retransmission technology such as the hybrid automatic repeat request (HARQ).

[0357] The wireless communication unit 121 may be configured to be communicable using the radio access technology (wireless communication scheme) other than the LTE, the NR, and the 6G. For example, the wireless communication unit 121 may be configured to be compatible with Wi-Fi (registered trademark) and Bluetooth (registered trademark). Furthermore, the terminal 120 may be configured to be communicable using the low power wide area (LPWA) communication. In addition, the terminal 120 may be configured to be communicable using the wireless communication with a proprietary standard.

[0358] Here, the LPWA communication is wireless communication that enables low-power wide-range communication. For example, the LPWA radio is Internet of Things (IoT) wireless communication using specified low power radio (for example, 920 MHz band) or an industry-science-medical (ISM) band. The LPWA communication used by the terminal 120 may conform to an LPWA standard. Examples of the LPWA standard include ELTRES, ZETA, SIGFOX, LoRaWAN, and NB-Iot. It is a matter of course that the LPWA standard is not limited thereto, and may be other LPWA standards.

[0359] The wireless communication unit 121 includes a transmission processing unit 1211, a reception processing unit 1212, and an antenna 1213. The wireless communication unit 121 may include a plurality of transmission processing units 1211, a plurality of reception processing units 1212, and a plurality of antennas 1213. In a case where the wireless communication unit 121 supports a plurality of radio access schemes, each unit of the wireless communication unit 121 can be individually configured for each radio access scheme. For example, the transmission processing unit 1211 and the reception processing unit 1212 may be individually configured for each of the LTE, the NR, and the 6G. The antenna 1213 may be implemented by a plurality of antenna elements, for example, a plurality of patch antennas. The wireless communication unit 121 may have a beamforming function. For example, the wireless communication unit 121 may have the polarization beamforming function (or the polarization beamforming function using the dual polarization in the polarization directions of 45 degrees and -45 degrees from the vertical direction) using the vertically polarized waves (V-polarized waves) and the horizontally polarized waves (H-polarized waves).

[0360] The storage unit 122 is a storage device, from and in which reading and writing can be performed, such as a DRAM, an SRAM, a flash memory, or a hard disk. The storage unit 122 functions as storage means of the terminal 120.

[0361] The control unit 123 is a controller that controls each unit of the terminal 120. The control unit 123 controls the wireless communication unit 121 to perform the wireless communication with another wireless communication device. The control unit 123 may be implemented by a processor such as a CPU or an MPU. Specifically, the control unit 123 is implemented in a manner in which the processor executes various programs stored in the storage device inside the terminal 120 by using a RAM or the like as a work area. The control unit 123 may be implemented by an integrated circuit such as an ASIC or a FPGA. The CPU, the MPU, the ASIC, and the FPGA can all be regarded as the controller. The control unit 123 may be implemented by a GPU. The CPU, the MPU, the ASIC, the FPGA, and the GPU can all be regarded as the controller. The control unit 123 may be implemented by a plurality of physically separated objects. For example, the control unit 123 may include a plurality of semiconductor chips.

[0362] <<4. Preliminary Preparation>><4-1. Division of Frequency Management Target Region>The information processing device 200 performs division processing for a frequency management target as preliminary preparation for frequency management. The division processing is performed in advance by the information processing device 200, for example, before the registration procedure of the second communication device 110S is performed.

[0363] Fig. 12 is a diagram illustrating an example of the division of the frequency management target according to the embodiment of the present disclosure. In the example of Fig. 12, the information processing device 200 grids a region (corresponding to a target region of Fig. 12) that is the frequency management target.

[0364] Here, the "target region" may be the entire national land of a country / region that is the frequency management target of the information processing system SYS1. Alternatively, the "target region" may be determined based on a predetermined administrative district.

[0365] In addition, the division of the target region is not necessarily performed by regular gridding. For example, a region in which fluctuation of a received power level becomes large based on an empirical rule or the like due to an influence of terrain, structures, or the like may be divided by a finer grid than other regions. Further, the target region does not need to be divided into a grid such as squares. For example, the target region may be divided into any shape as long as an aggregated interference power database described below can be created.

[0366] <4-2. Creation and Initialization of Aggregated Interference Power Database>The aggregated interference power database (aggregated interference power DB) is a database that records a calculated value of aggregated received interference power (also referred to as aggregated interference power) at a grid point configured according to the division processing for the "target region". The aggregated interference power DB is created and initialized in the information recording device 300 by the information processing device 200, for example.

[0367] Fig. 13 is a diagram illustrating an example of the grid point according to the embodiment of the present disclosure. In Fig. 13, for example, the information processing device 200 divides the target region into M*N grid points, and calculates the aggregated interference power for each grid point (for example, points P1 to P3). The grid points for which the information processing device 200 calculates the aggregated interference power are not limited to the points P1 to P3. For example, the information processing device 200 can calculate the aggregated interference power for all the grid points included in the target region.

[0368] The aggregated interference power DB records a calculated value of the aggregated interference power for each frequency that the incumbent system (corresponding to the primary system) may use. For example, in a case where a grid obtained by dividing the target region includes M*N grid points, the calculated value recorded in the aggregated interference power DB can be described as the following Expression (4) using a matrix.

[0369]

[0370] CIncumbentrepresents an identifier of a frequency channel that the incumbent system may use. Imn(CIncumbent)(mW)represents a calculated value (unit: mW) of the aggregated received interference power at grid coordinates (m,n) in the frequency channel CIncumbent(m is equal to or more than 1 and equal to or less than M, and n is equal to or more than 1 and equal to or less than N).

[0371] In principle, an initial value at the time of constructing the database is zero (Imn(CIncumbent)(mW)= 0). A case where the initial value is set to a value other than zero will be described below.

[0372] <<5. Step and Procedure>>Hereinafter, a step and / or a procedure performed by the information processing system SYS1 according to the embodiment of the present disclosure will be described. The description of the same processing as the processing described in <2-3. Basic Processing of Information Processing System SYS1> or the like will be omitted.

[0373] In the information processing system SYS1 according to the present embodiment, as described above, at least the following process is performed until the radio wave emission from the second communication device 110S is started.- Registration procedure- Frequency use grant procedure- Frequency use notification / authorization / heartbeat procedure

[0374] <5-1. Information Processing for Frequency Use Grant>For example, in the frequency use grant procedure, the information processing device 200 performs determination processing for an allocated frequency based on the aggregated interference power DB and update processing for the aggregated interference power DB. The determination processing and the update processing only need to be performed at the latest stage of the frequency use grant procedure, and do not have to necessarily be performed in the frequency use grant procedure. For example, a part or all of the steps of processing described here may be performed as a part of registration permission determination at the stage of the registration procedure.

[0375] For example, the second communication device 110S may be mapped in the "target region" by performing the registration procedure on the information processing device 200 by the second communication device 110S.

[0376] Fig. 14 is a diagram illustrating a mapping example of the second communication device 110S according to the embodiment of the present disclosure. For example, when the second communication device 110S performs the registration procedure, the information processing device 200 can map the second communication device 110S to the target region divided into the grid.

[0377] Fig. 15 is a diagram illustrating an example of the target region according to the embodiment of the present disclosure. As illustrated in Fig. 15, the target region to which the second communication device 110S is mapped can be divided into, for example, the following three areas.- Coverage area R10- Interference area R20- Non-interference area R30

[0378] (Coverage Area R10)The coverage area R10 is a communication service area coverage provided by the second communication device 110S. The second communication device 110S provides the communication service to the second terminal 120S in the coverage area R10.

[0379] In Fig. 15, the coverage area R10 is illustrated as a circle for convenience, but the actual coverage area R10 can have various shapes.

[0380] For example, in a case where a range covered by the license is designated in advance by a licensing rule or the like, it is desirable that the area is treated as the communication service area coverage, that is, the coverage area R10.

[0381] Fig. 16 is a diagram for describing a shared access licence framework established by the Ofcom in the UK. As illustrated in Fig. 16, in the Shared Access Licence framework established by the Ofcom in the UK, a range covered by the licence is defined. A framework equivalent to the framework illustrated in Fig. 16 is defined not only in the UK but also in many countries and regions as the range covered by the license.

[0382] Furthermore, the coverage area R10 may be an area where it is expected that sufficient signal power for providing the communication service can be obtained. "Obtaining sufficient signal power" means that, for example, an estimated value of the received power level when the second terminal 120S receives the radio waves emitted by the second communication device 110S is equal to or larger than a predetermined value.

[0383] (Interference Area R20)The interference area R20 is an area where there is a possibility that interference of the second communication device 110S occurs. By considering the interference area R20, it is expected to contribute to the information processing device 200 managing the aggregated interference power so as not to exceed an allowable value of the primary system outside the coverage area R10.

[0384] The interference area R20 that manages the aggregated interference power is, for example, a region where the sufficient signal power from the second communication device 110S cannot be obtained. In the interference area R20, the aggregated interference power can be generated by aggregation with a signal emitted by another second communication device 110S that is installed and deployed later.

[0385] By considering the aggregated interference power of the interference area R20, the information processing device 200 can manage the radio wave emission of the second communication device 110S so as not to cause interference of the allowable value or more to the first communication device 110P and / or the first terminal 120P.

[0386] The interference area R20 is desirably a region where the second terminal 120S can receive the radio waves emitted by the second communication device 110S with constant signal power. That is, in the interference area R20, the second terminal 120S cannot receive the radio waves from the second communication device 110S with sufficient signal power, but can receive the radio waves with constant signal power.

[0387] In the present embodiment, the information processing device 200 calculates single station interference power (Im',n'(mW)) for a grid point (a black circle in Fig. 15) in the interference area R20. The information processing device 200 performs the frequency use grant and the update processing for the aggregated interference power DB based on a result of calculating the single station interference power.

[0388] The single station interference power (Im',n'(mW)) is replaced with the following Expression (5).

[0389]

[0390] PMaxEirp(dBm)is the maximum EIRP of the second communication device 110S. Lm',n'(dB)represents a propagation loss between the second communication device 110S and a grid point (m',n'). GRx(dB)represents an assumed value of a reception antenna gain for the first communication device 110P and / or the first terminal 120P.

[0391] An allowable value of the first communication device 110P and / or the first terminal 120P is ITh(mW). At this time, in a case where the condition shown in the following Expression (6) is satisfied, the information processing device 200 determines that the frequency use grant can be performed for the second communication device 110S for a frequency channel CIncumbent,xfor the first communication device 110P and / or the first terminal 120P.

[0392]

[0393] x represents a channel index, and X frequency channels are configured in advance, that is, channelization is defined.

[0394] In a case where the condition of Expression (6) is not satisfied for the frequency channel CIncumbent,x, the information processing device 200 may lower a transmission power value used in the calculation of the single station interference power (Im',n'(mW)) by a predetermined value P(dB)and perform the condition determination again.

[0395] That is, the information processing device 200 updates PMaxEirp(dBm)based on the following Expression (7) to determine whether or not the frequency use grant can be performed.

[0396]

[0397] Alternatively, in a case where the condition of Expression (6) is not satisfied for the frequency channel CIncumbent,x, the information processing device 200 may perform the calculation in a similar manner for another frequency channel C'Incumbent,xand determine whether or not the frequency use grant can be performed.

[0398] When performing the calculation for another frequency channel C'Incumbent,x, it is desirable to recalculate Im',n'(mW)strictly for each frequency channel. For example, in a case where a difference between the calculated values due to a frequency dependence of an estimated value of the propagation loss has a magnitude that causes no problem even if the difference is ignored, the information processing device 200 may determine whether or not the frequency use grant can be performed by using the same Im',n'(mW)even for another frequency channel.

[0399] The condition determination described herein may be applied to the registration procedure and / or an available frequency query procedure. For example, when the registration request is received in the registration procedure, the information processing device 200 may perform the above condition determination for all the frequency channels.

[0400] The information processing device 200 may deny registration in a case where Inequation (6) is not satisfied for all the frequency channels. That is, the information processing device 200 permits the registration in a case where Inequation (6) is satisfied for at least one frequency channel.

[0401] For example, the information processing device 200 may perform calculation similar to the above-described calculation in the available frequency query procedure, and generate the available frequency information so as to include all the frequency channels satisfying Inequation (6). For example, the information processing device 200 can provide the generated available frequency information to the second communication device 110S.

[0402] Here, for example, it is assumed that the frequency use grant request is transmitted from the second communication device 110S to the information processing device 200 by a designation method for designating the transmission power, the frequency range, and the like. In this case, the information processing device 200 calculates Im',n'(mW)based on the designated transmission power.

[0403] Furthermore, the information processing device 200 performs the determination of Conditional Expression (6) for the frequency channel CIncumbent,xincluded in the designated frequency range (freq,startor more and freq,stopor less). In a case where a plurality of frequency channels are included in the designated frequency range, the information processing device 200 performs determination using Conditional Expression (6) for all the included frequency channels.

[0404] Fig. 17 is a diagram illustrating an example of the frequency range according to the embodiment of the present disclosure. For example, in a case where the frequency range is not designated, the information processing device 200 uses frequency channels CIncumbent,1to CIncumbent,6as target frequency channels for the condition determination to perform determination of the frequency use grant or the like.

[0405] On the other hand, in a case where the frequency range is designated by the second communication device 110S, the information processing device 200 uses the frequency channel CIncumbent,xat least partially overlapping with the designated frequency range as the target frequency channel for the condition determination to perform determination of the frequency use grant or the like.

[0406] In the example of Fig. 17, the frequency range from freq,startto freq,stopis designated. In this case, the information processing device 200 performs the determination of the frequency use grant by using the frequency channels CIncumbent,2to CIncumbent,6excluding the frequency channel CIncumbent,1as the target frequency channels for the condition determination. That is, in the example of Fig. 17, the index x of the frequency channel for which the information processing device 200 performs the determination of the frequency use grant is 2 or more and 6 or less.

[0407] In a case where the designated frequency range partially overlaps with a certain frequency channel, the information processing device 200 desirably performs the above condition determination in consideration of the partial overlapping. In the example of Fig. 17, the frequency channel CIncumbent,5partially overlaps with the designated frequency range.

[0408] Alternatively, the information processing device 200 may perform the condition determination on the assumption that the entire frequency channel CIncumbent,5is included in the designated frequency range without considering the partial overlapping.

[0409] It is assumed that the frequency use grant request is transmitted from the second communication device 110S to the information processing device 200 in a flexible manner. In this case, the information processing device 200 specifies a frequency channel CIncumbent,availsatisfying Conditional Expression (6). The information processing device 200 derives a communication parameter conforming to a requirement information included in the request based on the specified frequency channel CIncumbent,avail. Examples of the communication parameter derived by the information processing device 200 include the frequency range and the maximum transmission power.

[0410] For example, it is also conceivable that the information processing device 200 approves the frequency use grant request as a result of the information processing regardless of the designation method or the flexible method described above. In this case, the information processing device 200 performs the update processing for the aggregated interference power DB.

[0411] In the update processing, the information processing device 200 updates the calculated value of the aggregated interference power at each grid point for the frequency channel CIncumbent,xbased on the following Expression (8). The frequency channel CIncumbent,xhere is included in the frequency range determined to be allocated to the second communication device 110S.

[0412]

[0413] For example, in Fig. 17, it is assumed that the information processing device 200 determines the range from freq,startto freq,stopas the frequency range to be allocated to the second communication device 110S. In this case, the information processing device 200 performs the update processing for the aggregated interference power DB for the frequency channels with the indexes x of 2, 3, 4, 5, and 6.

[0414] The information processing device 200 according to the present embodiment desirably acquires and holds in advance information regarding a region corresponding to the coverage area R10. The information may be held by the information processing device 200 or may be held by the information recording device 300.

[0415] For example, Fig. 15 and the like illustrate a scenario in which no other second communication device 110S exists around the second communication device 110S. However, in practice, there is also a scenario in which another second communication device 110S exists around the second communication device 110S. In this case, the information processing device 200 is required to perform protection processing of protecting the second communication device 110S already having use authorization from the second communication device 110S (hereinafter, also referred to as a subsequent second communication device 110S) that requests for acquisition of the use authorization later.

[0416] In order to perform the protection processing, the information processing device 200 desirably acquires and holds in advance the information regarding the region corresponding to the coverage area R10 of the second communication device 110S.

[0417] The information processing device 200 may treat the region corresponding to the coverage area R10 as the exclusion zone applied to the subsequent second communication device 110S. The information processing device 200 may separately construct the aggregated interference power DB for the coverage area R10 of the second communication device 110S for the purpose of interference coordination between the second communication devices 110S.

[0418] <5-2. Information Processing for Frequency Use Notification / Authorization / Heartbeat>As described above, after receiving the frequency use notification from the second communication device 110S, the information processing device 200 determines whether or not the start or continuation of the frequency use is possible (in other words, the radio wave transmission at the permitted frequency). For example, the information processing device 200 performs processing of determining whether or not the start or continuation of the frequency use is possible as information processing for the frequency use notification / authorization / heartbeat. The frequency use notification may be transmitted from the intermediate device 130 on behalf of the second communication device 110S.

[0419] The determination processing is performed based on the frequency use information of the primary system (specifically, for example, the first communication device 110P and / or the first terminal 120P) reported from the information notification device 400.

[0420] In the present embodiment, the information processing device 200 performs the determination processing for the second communication device 110S (hereinafter, also referred to as a target communication device) whose granted frequency range overlaps with at least a part of the used frequency channel of the primary system.

[0421] For example, the information processing device 200 determines whether or not the second communication device 110S is the target communication device, that is, whether or not the determination processing is performed for the second communication device 110S, by referring to operation area information of the primary system. The operation area information includes, for example, information regarding the used frequency channel of the primary system.

[0422] The information processing device 200 performs the determination processing by comparing the coverage area R10 and the interference area R20 of the target communication device with the operation area information of the primary system.

[0423] Fig. 18 is a diagram for describing an example of the determination processing according to the embodiment of the present disclosure. Fig. 18 illustrates an example in which at least a part of an operation area R40 of the primary system overlaps with the coverage area R10 of the target communication device.

[0424] In this case, the information processing device 200 determines that the start or continuation of the radio wave emission of the target communication device is not possible.

[0425] In the record of the aggregated interference power DB, in other words, in the determination processing and the update processing in <5-1. Information Processing for Frequency Use Grant>, interference within the coverage area R10 of the second communication device 110S is not considered.

[0426] Therefore, in a case where at least a part of the coverage area R10 of the target communication device overlaps with the operation area R40 of the primary system, when the target communication device emits the radio waves, there is a possibility that the communication of the primary system is greatly affected.

[0427] Therefore, in a case where at least a part of the coverage area R10 of the target communication device overlaps with the operation area R40 of the primary system, the information processing device 200 determines that the start or continuation of the radio wave emission of the target communication device is not possible.

[0428] Fig. 19 is a diagram for describing another example of the determination processing according to the embodiment of the present disclosure. Fig. 19 illustrates an example in which the operation area R40 of the primary system does not overlap with the coverage area R10 of the target communication device. In other words, the operation area R40 overlaps with the non-interference area R30, and does not overlap with the coverage area R10 and the interference area R20.

[0429] In this case, there is a low possibility that the radio wave emission from the target communication device affects the communication of the primary system. Therefore, the information processing device 200 determines that the start or continuation of the radio wave emission of the target communication device is possible.

[0430] Fig. 20 is a diagram for describing another example of the determination processing according to the embodiment of the present disclosure. Fig. 20 illustrates an example in which at least a part of the operation area R40 of the primary system overlaps with the interference area R20 of the target communication device. In other words, the operation area R40 overlaps with the non-interference area R30 and the interference area R20, and does not overlap with the coverage area R10.

[0431] In this case, the information processing device 200 determines that the start or continuation of the radio wave emission of the target communication device is possible.

[0432] In the record of the aggregated interference power DB, in the interference area R20, the aggregated interference power is managed by the information processing device 200 so as not to exceed a reference value at all times based on the determination processing and the update processing in <5-1. Information Processing for Frequency Use Grant>. Therefore, in a case where at least a part of the interference area R20 overlaps with at least a part of the operation area R40, even if the target communication device emits the radio waves, there is a low possibility that the communication of the primary system is greatly affected.

[0433] Therefore, in a case where at least a part of the interference area R20 of the target communication device overlaps with the operation area R40 of the primary system, the information processing device 200 determines that the start or continuation of the radio wave emission of the target communication device is possible.

[0434] In other words, in a case where at least a part of the interference area R20 of the target communication device overlaps with the operation area R40 of the primary system, the information processing device 200 determines whether or not the start or continuation of the radio wave emission of the target communication device is possible according to an aggregated interference amount of the interference area R20.

[0435] In a case where the operation area information of the primary system is not valid or the valid operation area information is not reported from the information notification device 400, the information processing device 200 may determine that the start or continuation of the radio wave emission of the target communication device is possible.

[0436] <5-3. Processing Example of Second Communication Device>The information processing device 200 may be required to stop the radio wave emission to the second communication device 110S depending on a result of the processing of determining whether or not the start or continuation of the frequency use is possible as described above.

[0437] In this case, the second communication device 110S can make a notification to the second communication device 110S to stop the radio wave emission for the entire frequency range granted for the second communication device 110S.

[0438] Alternatively, the second communication device 110S may stop the radio wave emission in a frequency range (an example of a third frequency range) overlapping with the used frequency channel of the primary system in the frequency range granted for the second communication device 110S.

[0439] For example, the second communication device 110 performs muting of the frequency resource for the frequency range overlapping with the used frequency channel of the primary system. On the other hand, the second communication device 110S continues the radio wave emission by using a frequency range (for example, a non-overlapping frequency resource) that does not overlap with the used frequency channel of the primary system.

[0440] In this case, the information processing device 200 may notify the second communication device 110S whose radio wave emission is to be stopped of the frequency range in which the radio wave emission is to be stopped.

[0441] In addition, the information processing device 200 can notify the second communication device 110S of the frequency range in which the radio wave emission is to be stopped by a method based on security and / or privacy requirements of each device (specifically, the first communication device 110P and / or the first terminal 120P) of the primary system.

[0442] For example, in a case where it is not necessary to conceal the frequency used by the primary system, the information processing device 200 may notify all the second communication devices 110S whose radio wave emission is to be stopped of a list of the used frequency channels of the primary system.

[0443] In this case, the second communication device 110S that has received the notification specifies the frequency range (for example, the non-overlapping frequency resource) that does not overlap with the used frequency channel of the primary system from the list. The second communication device 110S starts or continues the radio wave emission by using the specified non-overlapping frequency resource.

[0444] For example, in a case where it is necessary to conceal the frequency used by the primary system, the information processing device 200 notifies the second communication device 110S whose radio wave emission is to be stopped of the frequency range (for example, the non-overlapping frequency resource) that does not overlap with the used frequency channel of the primary system.

[0445] At this time, the information processing device 200 specifies the frequency range (for example, the non-overlapping frequency resource) that does not overlap with the used frequency channel of the primary system for each second communication device 110S. The information processing device 200 notifies the corresponding second communication device 110S of the specified frequency range. The second communication device 110S that has received the notification starts or continues the radio wave emission by using the resource in the frequency range included in the notification.

[0446] As a result, the information processing device 200 can notify the second communication device 110S of the frequency range that can be used by the second communication device 110S in a state in which it is more difficult to accurately specify information regarding the frequency channel used by the primary system.

[0447] Here, Fig. 21 is a diagram illustrating an example of the frequency resource used by the second communication device 110S according to the embodiment of the present disclosure. Fig. 21 illustrates an example of the frequency resource in a case where the second communication device 110S is a base station of the 4G / 5G.

[0448] As illustrated in Fig. 21, in the 4G / 5G, a plurality of physical resource blocks (PRB) according to a channel bandwidth is defined. For example, the plurality of PRBs are configured in a frequency range (transmission bandwidth configuration) obtained by removing a guardband from the channel bandwidth.

[0449] Fig. 22 is a diagram illustrating another example of the frequency resource used by the second communication device 110S according to the embodiment of the present disclosure. Fig. 22 illustrates an example of the frequency resource used in a case where the second communication device 110S has received a notification of a frequency range R50 in which the radio wave emission is to be stopped from the information processing device 200.

[0450] For example, the second communication device 110S that has received the notification of the frequency range R50 in which the radio wave emission is to be stopped specifies a frequency range that does not overlap with the frequency range R50, and performs communication using the PRB of the specified frequency range.

[0451] In other words, the second communication device 110S can perform communication by muting the PRB at least partially overlapping with the frequency range R50 in which the radio wave emission is to be stopped among the plurality of PRBs defined according to the channel bandwidth.

[0452] <<6. Processing Example>>Fig. 23 is a sequence diagram illustrating an example of a flow of communication processing according to the embodiment of the present disclosure. The communication processing of Fig. 23 is performed between the information processing device 200 and the second communication device 110S of the communication system, for example. Although the intermediate device 130 is not illustrated in Fig. 23, the communication processing may be performed via the intermediate device 130.

[0453] First, the information processing device 200 divides the frequency management target region (step S101). In addition, the information processing device 200 creates and initializes the aggregated interference power DB (step S102).

[0454] Next, the registration procedure is performed between the information processing device 200 and the second communication device 110S (step S103). For example, the information processing device 200 performs the registration procedure according to the request from the second communication device 110S.

[0455] The frequency use grant procedure including the determination processing and the update processing is performed between the information processing device 200 and the second communication device 110S (step S104). The frequency use grant procedure is performed, for example, according to the request from the second communication device 110S.

[0456] For example, the information processing device 200 performs the determination processing for the allocated frequency based on the aggregated interference power DB and the update processing for the aggregated interference power DB as a part of the frequency use grant procedure. For example, the information processing device 200 updates the calculated value of the aggregated interference power of the interference area R20 of the second communication device 110S.

[0457] In addition, the information processing device 200 determines the frequency range (for example, the non-overlapping frequency resource) that does not overlap with the used frequency channel of the primary system, and generates the available frequency information. The information processing device 200 notifies the second communication device 110S of the generated available frequency information.

[0458] The frequency use notification / authorization / heartbeat procedure is performed between the information processing device 200 and the second communication device 110S (step S105). The procedure is performed, for example, according to the request from the second communication device 110S. Alternatively, the procedure may be performed when the operation area information of the primary system is reported from the information notification device 400.

[0459] As this procedure, the information processing device 200 performs, for example, the processing of determining whether or not the start or continuation of the frequency use by the second communication device 110S is possible. The information processing device 200 performs the processing of determining whether or not the start or continuation of the frequency use is possible (in other words, the start or continuation of the radio wave emission) according to the operation area information of each device of the primary system and the area information of the second communication device 110S.

[0460] The information processing device 200 acquires the operation area information from the primary system via the information notification device 400, for example, during or before the determination processing. Furthermore, the area information of the second communication device 110S includes, for example, information regarding the coverage area R10 and the interference area R20 of the second communication device 110S. The information notification device 400 acquires the area information of the second communication device 110S from the second communication device 110S (alternatively, the core network of the secondary system, an administrator of the secondary system, or the like), for example, during or before the determination processing.

[0461] For example, in a case where the frequency range granted for the second communication device 110S overlaps with at least a part of the used frequency channel of the primary system, the information processing device 200 performs the processing of determining whether or not the start or continuation of the frequency use is possible.

[0462] As the determination processing, for example, in a case where at least a part of the operation area of the primary system and at least a part of the coverage area R10 of the second communication device 110S overlap with each other, the information processing device 200 determines that the start or continuation of the radio wave emission is not possible.

[0463] Furthermore, for example, in a case where at least a part of the operation area of the primary system and at least a part of the interference area R20 of the second communication device 110S overlap with each other, the information processing device 200 can determine whether or not the start or continuation of the radio wave emission is possible with reference to the aggregated interference power DB. In other words, in this case, the information processing device 200 determines whether or not the start or continuation of the radio wave emission is possible according to the interference caused by the second communication device 110S to the primary system in the interference area R20 (more specifically, an aggregated amount (aggregated interference power) of the interference caused by one or more second communication devices 110S to the primary system).

[0464] For example, in a case where the aggregated interference power of the interference area R20 is equal to or less than a predetermined threshold (for example, the reference value described above), the information processing device 200 determines that the start or continuation of the radio wave emission is possible.

[0465] On the other hand, in a case where the aggregated interference power in the interference area R20 is greater than the predetermined threshold, the information processing device 200 determines that the start or continuation of the radio wave emission is not possible. Alternatively, the information processing device 200 may designate the transmission power such that the aggregated interference power does not exceed the predetermined threshold, and determine that the start or continuation of the radio wave emission of the second communication device 110S is possible.

[0466] As described above, in a case where the aggregated interference power is managed so as not to exceed the reference value at all times based on the determination processing and the update processing, the information processing device 200 can determine that the start or continuation of the radio wave emission of the second communication device 110S is possible without referring to the aggregated interference power DB.

[0467] In a case where the information processing device 200 determines that the start or continuation of the radio wave emission is possible, the second communication device 110S emits the radio waves (step S106).

[0468] Although not illustrated in Fig. 23, in a case where the information processing device 200 determines that the start or continuation of the radio wave emission is not possible, the second communication device 110S does not emit the radio waves.

[0469] As described above, the information processing device 200 according to the embodiment of the present disclosure determines whether or not the start or continuation of the radio wave emission is possible according to the operation area information and the area information of the second communication device 110S. As a result, for example, even in a case where there is a possibility that the operation area of the primary system and the coverage area R10 of the secondary system overlap with each other, the communication system can perform communication using the frequency sharing technology.

[0470] <<7. Other Embodiments>>The configuration and / or processing according to the above-described embodiment may be implemented in various different modes other than that in each embodiment described above.

[0471] In the above-described embodiment, the first communication device 110P and / or the first terminal 120P belong to the primary system, but the present disclosure is not limited thereto. The first communication device 110P and / or the first terminal 120P may belong to the secondary system.

[0472] Fig. 24 is a diagram illustrating a configuration example of a communication system according to another embodiment of the present disclosure. In the communication system of Fig. 24, the same components as those of the communication system of Fig. 8 are denoted by the same reference signs, and the description thereof may be omitted.

[0473] In the communication system illustrated in Fig. 24, first terminals 120P-1 and 120P-2 are connected to a second communication device 110S-1. That is, the first terminals 120P-1 and 120P-2 are protection targets as PS / PPDR or the like, and can normally act as served terminals of the second communication device 110S-1.

[0474] In addition, the first terminals 120P-1 and 120P-2 may have a function as an information notification device 400. That is, the first terminals 120P-1 and 120P-2 can act as the information notification device 400.

[0475] Here, it is assumed that the first terminal 120P-1 starts communication as a primary system. In this case, the first terminal 120P-1 notifies an information processing device 200 of operation area information, as the information notification device 400.

[0476] Fig. 25 is a diagram illustrating an example of an operation area R40 according to another embodiment of the present disclosure. In Fig. 25, at least a part of the operation area R40 of the first terminal 120P-1 overlaps with at least a part of a coverage area R10-1 and at least a part of an interference area R20-1 of the second communication device 110S-1. In addition, at least a part of the operation area R40 of the first terminal 120P-1 overlaps with at least a part of a coverage area R10-2 and at least a part of an interference area R20-2 of a second communication device 110S-2.

[0477] The first terminal 120P-1 notifies the information processing device 200 of the operation area information including information regarding the operation area R40.

[0478] It is assumed that the information processing device 200 that has received the notification performs information processing for frequency use notification / authorization / heartbeat described above, for example. In this case, in the above-described embodiment, the information processing device 200 determines to stop radio wave emission of the second communication devices 110S-1 and 110S-2.

[0479] However, here, the second communication device 110S-1 corresponds to a serving base station of the first terminal 120P-1. Therefore, when the second communication device 110S-1 stops the radio wave emission, there is a possibility that the first terminal 120P-1 cannot be served (in other words, the first terminal 120P-1 cannot continue communication).

[0480] Therefore, for example, the information processing device 200 does not have to stop the radio wave emission of the second communication device 110S-1 serving the first terminal 120P-1.

[0481] For example, as the information notification device 400, the first terminal 120P-1 notifies the information processing device 200 of serving information regarding the second communication device 110S-1 that may serve the first terminal 120P-1.

[0482] For example, based on the serving information, the information processing device 200 excepts the second communication device 110S-1 from targets of processing of determining whether or not start or continuation of frequency use is possible in the frequency use notification / authorization / heartbeat. In other words, the information processing device 200 determines that the start or continuation of the radio wave emission of the second communication device 110S is possible regardless of the operation area R40 and / or area information of the second communication device 110S-1. The area information of the second communication device 110S-1 includes, for example, information regarding the coverage area R10-1 and / or information regarding the interference area R20-1.

[0483] As a result, the first terminal 120P-1 can perform communication via the second communication device 110S-1 even when operating as the primary system.

[0484] Fig. 26 is a sequence diagram illustrating an example of a flow of communication processing according to another embodiment of the present disclosure. It is assumed that procedures of steps S101 to S104 of Fig. 23 are performed before the start of the communication processing of Fig. 26. Although an intermediate device 130 is not illustrated in Fig. 26, the communication processing may be performed via the intermediate device 130.

[0485] As illustrated in Fig. 26, the second communication device 110S-1 performs a frequency use notification / authorization / heartbeat procedure with the information processing device 200 (step S201). As a result of the procedure, the second communication device 110S-1 starts the radio wave emission (step S202).

[0486] Similarly, the second communication device 110S-2 performs the frequency use notification / authorization / heartbeat procedure with the information processing device 200 (step S203). As a result of the procedure, the second communication device 110S-2 starts the radio wave emission (step S204).

[0487] Here, when the first terminal 120P-1 is powered on (step S205), a procedure such as initial access to cell connection is performed with the second communication device 110S-1 (step S206).

[0488] When connected to the second communication device 110S-1, the first terminal 120P-1 notifies the information processing device 200 of the operation area information thereof (step S207). The notification of the operation area information can be performed via the second communication device 110S-1.

[0489] For example, the information processing device 200 notifies the first terminal 120P-1 of Acknowledgment in response to the notification of the operation area information (step S208).

[0490] Next, when the second communication device 110S-2 requests for the frequency use notification / authorization / heartbeat procedure (step S209), the information processing device 200 performs the processing of determining whether or not the start or continuation of the frequency use by the second communication device 110S-2 is possible (step S210).

[0491] Here, the information processing device 200 determines to stop the radio wave emission of the second communication device 110S-2 whose coverage area R10-2 partially overlaps with the operation area R40 of the first terminal 120P-1.

[0492] Therefore, the information processing device 200 transmits a radio wave emission stop notification to the second communication device 110S-2 (step S211). The second communication device 110S-2 that has received the radio wave emission stop notification stops the radio wave emission (step S212).

[0493] On the other hand, even when the second communication device 110S-1 requests for the frequency use notification / authorization / heartbeat procedure, the second communication device 110S-1 functions as the serving base station of the first terminal 120P-1. Therefore, the information processing device 200 determines to continue the radio wave emission by the second communication device 110S-1 without performing the processing of determining whether or not the start or continuation of the frequency use by the second communication device 110S-1 is possible.

[0494] As described above, by protecting the communication of the first terminal 120P connected to the second communication device 110S, the communication system can operate, as the primary system, a part of the secondary system.

[0495] Here, the information processing device 200 performs the determination processing in response to the request from the second communication device 110S-2, but the determination processing may also be performed in response to the reception of the operation area information of the first terminal 120P-1. Alternatively, for example, in a case where a time at which the operation of the first terminal 120P-1 is started is defined by the operation area information or the like, the information processing device 200 may notify the second communication device 110S-2 to stop the radio wave emission by the time.

[0496] In addition, here, it is assumed that the first terminal 120P-1 is connected to the second communication device 110S-1 after being powered on and then notifies the information processing device 200 of the operation area information. In other words, the operation area information is reported at a timing at which the first terminal 120P-1 can access a network such as the Internet, but the timing at which the first terminal 120P-1 notifies of the operation area information is not limited thereto.

[0497] For example, the first terminal 120P-1 may perform terminal-to-terminal relay communication by sidelink communication with another first terminal 120P (for example, the first terminal 120P-2). In this case, there is a possibility that the operation area R40 is changed according to the number of first terminals 120P that perform the relay communication, a location of the first terminal 120P, and the like.

[0498] For example, in a case where the number of first terminals 120P that perform the relay communication increases, there is a possibility that the operation area R40 becomes wider. Similarly, there is a possibility that the operation area R40 is narrowed or a shape thereof is changed.

[0499] With such a change (update) of the operation area R40, the first terminal 120P-1 may notify the information processing device 200 of the operation area information.

[0500] Alternatively, in a case where the terminal 120 functioning as a second terminal 120S functions as the first terminal 120P, the operation area information may be reported to the information processing device 200.

[0501] As illustrated in Fig. 24, the operation area R40 of the first terminal 120P-1 partially overlaps with the coverage area R10-1 of the second communication device 110S-2. In this case, similarly to the second communication device 110S-2, the information processing device 200 may determine to continue the radio wave emission by the second communication device 110S-1 without performing the processing of determining whether or not the start or continuation of the frequency use is possible for the second communication device 110S-1.

[0502] For example, in a case where the second communication devices 110S-1 and 110S-2 are operated by the same user (operator), there is a possibility that the first terminal 120P-1 performs handover from the second communication device 110S-1 to the second communication device 110S-2. Since the radio wave emission by the second communication device 110S-1 is continued, the first terminal 120P-1 can continue the communication even if the handover occurs.

[0503] In the above-described embodiment, it is assumed that an initial value (for example, an initial value of aggregated interference power) of an aggregated interference power DB is zero (0 mW), but the initial value may be any value. For example, it is assumed that the primary system is continuously operated in a specific area for a certain period or more. In this case, the information processing device 200 may set the initial value of the aggregated interference power for the specific area as an allowable interference amount of the primary system.

[0504] In addition, in a case where the primary system can be operated continuously for a certain period or more after initial configuration (initialization) of the aggregated interference power DB, a recorded value (for example, a calculated value) of the aggregated interference power DB may be rewritten to the allowable interference amount of the primary system. In this case, it is desirable that the information processing device 200 determine to stop the radio wave emission for the second communication device 110S involved in the calculation of the calculated value recorded at the time of performing the rewriting.

[0505] For example, the control device that controls the communication device 110 and the information processing device 200, and the like of the above-described embodiment may be implemented by a dedicated computer system or may be implemented by a general-purpose computer system.

[0506] For example, a communication program for performing the above-described operations is stored in a computer-readable recording medium such as an optical disk, a semiconductor memory, a magnetic tape, or a flexible disk, and distributed. Then, for example, the control device is implemented by installing the program in a computer and performing the above-described processing. At this time, the control device may be a device (for example, a personal computer) outside the communication device 110 and the information processing device 200. Furthermore, the control device may be a device (for example, the control units 113 and 230) inside the communication device 110 and the information processing device 200.

[0507] Further, the above-described communication program may be stored in a disk device included in a server device on a network such as the Internet, and be downloaded to a computer. Further, the functions described above may be implemented by cooperation between an operating system (OS) and application software. In this case, the part other than the OS may be stored in a medium and distributed, or the part other than the OS may be stored in a server device and downloaded to a computer.

[0508] Further, among the respective steps of processing described in the above-described embodiments of the present disclosure, all or some of the steps of processing described as being automatically performed can be manually performed. Alternatively, all or some of the steps of processing described as being manually performed can be automatically performed by a known method. In addition, the processing steps, specific names, information including various data and parameters illustrated in the specification and drawings described above can be arbitrarily changed unless otherwise specified. For example, various pieces of information illustrated in the drawings are not limited to those illustrated in the drawings.

[0509] Further, each illustrated component of each device is functionally conceptual, and does not necessarily have to be configured physically as illustrated in the drawings. That is, the specific modes of distribution / integration of the respective devices are not limited to those illustrated in the drawings. All or some of the devices can be functionally or physically distributed / integrated in any arbitrary unit, depending on various loads or the usage status.

[0510] Further, the above-described embodiments of the present disclosure can be appropriately combined as long as the processing contents do not contradict each other. Further, the order of each step illustrated in the sequence diagram or the flowchart of the present embodiment can be changed as appropriate. For example, each step may be processed in time series, iteratively, or partially in parallel.

[0511] Further, the effects described in the present specification are merely examples. The effects of the present disclosure are not limited thereto, and other effects may be obtained.

[0512] Furthermore, for example, the embodiment can be implemented as any component included in the device or system, for example, a processor as a system large scale integration (LSI) or the like, a module using a plurality of processors or the like, a unit using a plurality of modules or the like, a set obtained by further adding other functions to a unit, or the like (that is, some components of the device).

[0513] Note that, in the embodiment, the system means a set of a plurality of components (devices, modules (parts), and the like), and it does not matter whether or not all the components are in the same housing. Therefore, a plurality of devices housed in separate housings and connected via a network and one device in which a plurality of modules are housed in one housing are both systems.

[0514] Furthermore, for example, the embodiment can adopt a configuration of cloud computing in which one function is shared and processed by a plurality of devices in cooperation via a network.

[0515] <<8. Conclusion>>Although the respective embodiments of the present disclosure have been described above, the technical scope of the present disclosure is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present disclosure. Moreover, components of different embodiments and modified examples may be appropriately combined.

[0516] Further, the effects in each embodiment described in the present specification are merely examples. The effects of the present disclosure are not limited thereto, and other effects may be obtained.

[0517] Note that the present technology can also have the following configurations.(1) A system comprising:　　circuitry configured to:　　　　register a communication device for operation in a frequency range;　　　　perform a frequency grant procedure for the communication device by accessing a database that records interference power values for a frequency management region;　　　　acquire operation area information of a first system and coverage area information of the communication device;　　　　determine whether to permit radio wave emission by the communication device based on a comparison between the operation area information and the coverage area information.(2) The system of (1), wherein　　the circuitry is configured to update the database after performing the frequency grant procedure.(3) The system of any of (1) to (2), wherein　　the interference power values comprise aggregated interference power values calculated from multiple communication devices.(4) The system of any of (1) to (3), wherein　　the interference power values are recorded for discrete locations within the frequency management region.(5) The system of any of (1) to (4), wherein　　the coverage area information identifies both a coverage area where the communication device provides service and an interference area where the communication device can cause interference.(6) The system of (5), wherein　　the circuitry is configured to determine not to permit radio wave emission when the operation area overlaps with the coverage area.(7) The system of (5), wherein　　the circuitry is configured to determine whether to permit radio wave emission based on aggregated interference power when the operation area overlaps with the interference area but not the coverage area.(8) The system of (7), wherein　　the circuitry permits radio wave emission when the aggregated interference power in the interference area is below a threshold.(9) The system of any of (1) to (8), wherein　　the circuitry is configured to calculate single station interference power for locations in an interference area of the communication device.　(10) The system of any of (1) to (9), wherein　　the first system comprises a public safety or public protection and disaster relief system.　(11) The system of any of (1) to (10), wherein　　the communication device comprises a base station of a mobile communication system.　(12) The system of any of (1) to (11), wherein　　the frequency range comprises a 4800-5000 MHz band.　(13) The system of any of (1) to (12), wherein　　the circuitry is configured to notify the communication device to stop radio wave emission in a portion of the frequency range that overlaps with a frequency used by the first system.　(14) The system of any of (1) to (13), wherein　　the communication device mutes physical resource blocks that overlap with the frequency used by the first system.　(15) The system of any of (1) to (14), wherein　　the circuitry is configured to periodically receive a frequency use notification from the communication device and determine whether to continue permitting radio wave emission.　(16) The system of any of (1) to (15), wherein　　the circuitry is configured to receive the operation area information from an information notification device that monitors the first system.　(17) The system of any of (1) to (16), wherein　　when the communication device serves a terminal of the first system, the circuitry permits radio wave emission regardless of overlap between the operation area and the coverage area.　(18) The system of any of (1) to (17), wherein　　the circuitry is configured to lower a transmission power value when initial frequency grant conditions are not satisfied.　(19) The system of any of (1) to (18), wherein　　the database records interference power values for each frequency channel that may be used by the first system.　(20) The system of any of (1) to (19), wherein　　the registering comprises receiving device parameters including location information and antenna information of the communication device.　(21) The system of any of (1) to (20), wherein　　the circuitry comprises a single information processing device that performs the registering, the performing, the acquiring, and the determining.　(22) The system of any of (1) to (21), wherein　　the circuitry comprises a plurality of distributed devices that collectively perform the registering, the performing, the acquiring, and the determining.　(23) The system of any of (1) to (22), wherein　　the database is remote from the circuitry.　(24) The system of any of (1) to (23), wherein　　the database is maintained within the circuitry.　(25) The system of any of (1) to (24), wherein　　the circuitry comprises an intermediate device that performs communication with the communication device on behalf of the circuitry.　(26) A method comprising:　　registering a communication device for operation in a frequency range;　　performing a frequency grant procedure for the communication device by accessing a database that records interference power values for a frequency management region;　　acquiring operation area information of a first system and coverage area information of the communication device; and　　determining whether to permit radio wave emission by the communication device based on a comparison between the operation area information and the coverage area information　(27) A system, comprising:　　memory configured to maintain an aggregated interference power database, the database mapping a plurality of geographic locations within a frequency management region to calculated interference power values for a frequency channel;　　a communication interface configured to receive a registration request from a secondary communication device and a notification of an active operation area of a primary system; and　　circuitry configured to　　　　update the aggregated interference power database based on potential interference from the registered secondary communication device in an interference area associated with the secondary communication device; and　　　　authorize or deny radio wave emission from the secondary communication device by determining if its coverage area overlaps with the active operation area of the primary system.

[0518] 110 Communication device111, 121 Wireless communication unit112, 122, 220 Storage unit113, 123, 230 Control unit120 Terminal130 Intermediate device200 Information processing device210 Communication unit300 Information recording device400 Information notification device

Claims

A system comprising:　　circuitry configured to:　　　　register a communication device for operation in a frequency range;　　　　perform a frequency grant procedure for the communication device by accessing a database that records interference power values for a frequency management region;　　　　acquire operation area information of a first system and coverage area information of the communication device;　　　　determine whether to permit radio wave emission by the communication device based on a comparison between the operation area information and the coverage area information.　The system of claim 1, wherein　　the circuitry is configured to update the database after performing the frequency grant procedure.　The system of claim 1, wherein　　the interference power values comprise aggregated interference power values calculated from multiple communication devices.　The system of claim 1, wherein　　the interference power values are recorded for discrete locations within the frequency management region.　The system of claim 1, wherein　　the coverage area information identifies both a coverage area where the communication device provides service and an interference area where the communication device can cause interference.　The system of claim 5, wherein　　the circuitry is configured to determine not to permit radio wave emission when the operation area overlaps with the coverage area.　The system of claim 5, wherein　　the circuitry is configured to determine whether to permit radio wave emission based on aggregated interference power when the operation area overlaps with the interference area but not the coverage area.　The system of claim 7, wherein　　the circuitry permits radio wave emission when the aggregated interference power in the interference area is below a threshold.　The system of claim 1, wherein　　the circuitry is configured to calculate single station interference power for locations in an interference area of the communication device.　The system of claim 1, wherein　　the first system comprises a public safety or public protection and disaster relief system.　The system of claim 1, wherein　　the communication device comprises a base station of a mobile communication system.　The system of claim 1, wherein　　the frequency range comprises a 4800-5000 MHz band.　The system of claim 1, wherein　　the circuitry is configured to notify the communication device to stop radio wave emission in a portion of the frequency range that overlaps with a frequency used by the first system.　The system of claim 13, wherein　　the communication device mutes physical resource blocks that overlap with the frequency used by the first system.　The system of claim 1, wherein　　the circuitry is configured to periodically receive a frequency use notification from the communication device and determine whether to continue permitting radio wave emission.　The system of claim 1, wherein　　the circuitry is configured to receive the operation area information from an information notification device that monitors the first system.　The system of claim 1, wherein　　when the communication device serves a terminal of the first system, the circuitry permits radio wave emission regardless of overlap between the operation area and the coverage area.　The system of claim 1, wherein　　the circuitry is configured to lower a transmission power value when initial frequency grant conditions are not satisfied.　The system of claim 1, wherein　　the database records interference power values for each frequency channel that may be used by the first system.　The system of claim 1, wherein　　the registering comprises receiving device parameters including location information and antenna information of the communication device.　The system of claim 1, wherein　　the circuitry comprises a single information processing device that performs the registering, the performing, the acquiring, and the determining.　The system of claim 1, wherein　　the circuitry comprises a plurality of distributed devices that collectively perform the registering, the performing, the acquiring, and the determining.　The system of claim 1, wherein　　the database is remote from the circuitry.　The system of claim 1, wherein　　the database is maintained within the circuitry.　The system of claim 1, wherein　　the circuitry comprises an intermediate device that performs communication with the communication device on behalf of the circuitry.　A method comprising:　　registering a communication device for operation in a frequency range;　　performing a frequency grant procedure for the communication device by accessing a database that records interference power values for a frequency management region;　　acquiring operation area information of a first system and coverage area information of the communication device; and　　determining whether to permit radio wave emission by the communication device based on a comparison between the operation area information and the coverage area information　A system, comprising:　　memory configured to maintain an aggregated interference power database, the database mapping a plurality of geographic locations within a frequency management region to calculated interference power values for a frequency channel;　　a communication interface configured to receive a registration request from a secondary communication device and a notification of an active operation area of a primary system; and　　circuitry configured to　　　　update the aggregated interference power database based on potential interference from the registered secondary communication device in an interference area associated with the secondary communication device; and　　　　authorize or deny radio wave emission from the secondary communication device by determining if its coverage area overlaps with the active operation area of the primary system.

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