WO2019039096A1 - Information processing device, base station, terminal device, and information processing method - Google Patents

Information processing device, base station, terminal device, and information processing method Download PDF

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Publication number
WO2019039096A1
WO2019039096A1 PCT/JP2018/025197 JP2018025197W WO2019039096A1 WO 2019039096 A1 WO2019039096 A1 WO 2019039096A1 JP 2018025197 W JP2018025197 W JP 2018025197W WO 2019039096 A1 WO2019039096 A1 WO 2019039096A1
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WIPO (PCT)
Prior art keywords
information
terminal device
base stations
base station
frame information
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PCT/JP2018/025197
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French (fr)
Japanese (ja)
Inventor
大介 川上
佐藤　雅典
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ソニー株式会社
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Priority to JP2019537965A priority Critical patent/JPWO2019039096A1/en
Publication of WO2019039096A1 publication Critical patent/WO2019039096A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to an information processing device, a base station, a terminal device, and an information processing method.
  • IoT Internet of Things
  • MTC Machine Type Communication
  • NB-IoT Narrow Band IoT
  • IoT tends to be applied to various fields such as agriculture and fisheries because of the above-mentioned characteristics.
  • the terminal device to be used is not limited to the conventional device such as a smartphone.
  • the configuration is further simplified as compared with the conventional terminal device, it becomes possible to apply a so-called low cost terminal which can be introduced at low cost.
  • the LPWA is a wireless communication technology (communication method) that enables low-power consumption and wide-area communication (in other words, long-distance communication) to be realized.
  • Patent Document 1 discloses an example of a technology that enables efficient use of available power of a terminal device in a wireless communication system based on a standard such as LTE.
  • the present disclosure proposes a technique that can make the operation of a system including wireless communication more efficient.
  • an acquisition unit acquires, from each of the plurality of base stations, predetermined control information related to frame information transmitted from the terminal device to each of the plurality of base stations through wireless communication;
  • An information processing apparatus comprising: a processing unit that specifies the base station that acquires a payload included in the frame information based on the control information acquired from each of the base stations.
  • an acquisition unit that acquires frame information from a terminal device via wireless communication, and control such that predetermined control information related to the acquired frame information is transmitted to a predetermined server
  • a base station comprising: a control unit, wherein the control unit controls a payload included in the frame information to be transmitted to the server in response to a request from the server.
  • a control unit configured to control frame information to be repeatedly transmitted to one or more base stations via wireless communication, and an acquisition unit configured to acquire information related to the state of the battery,
  • a control unit controls the frame within a predetermined period with respect to one or more of the base stations according to the state of the battery and the number of the base stations capable of transmitting the frame information through the wireless communication.
  • a terminal device is provided that controls the number of times information is transmitted.
  • an acquisition unit that acquires frame information repeatedly transmitted from a terminal apparatus to one or more base stations via wireless communication from at least some of the one or more base stations.
  • a processing unit that demodulates data from frame information acquired from the at least a part of the base stations, and the number of the frames according to the number of times the frame information is transmitted from the terminal device within a predetermined period.
  • An information processing apparatus is provided in which the frame information is acquired from a base station.
  • the computer acquires predetermined control information related to frame information transmitted from the terminal device to each of the plurality of base stations from each of the plurality of base stations.
  • An information processing method is provided, including: identifying the base station that acquires a payload included in the frame information based on the control information acquired from each of the plurality of base stations.
  • a computer may acquire frame information from a terminal device via wireless communication, and predetermined control information related to the acquired frame information may be transmitted to a predetermined server.
  • An information processing method includes: controlling and, in response to a request from the server, controlling a payload included in the frame information to be transmitted to the server.
  • the computer controls the frame information to be repeatedly transmitted to one or more base stations via wireless communication, obtaining information on the state of the battery, and The number of times the frame information is transmitted within a predetermined period to one or more of the base stations according to the state and the number of base stations that can transmit the frame information via the wireless communication
  • An information processing method is provided, including controlling.
  • a computer acquires frame information repeatedly transmitted from a terminal device to one or more base stations via wireless communication from at least some of the one or more base stations. And demodulating data from frame information acquired from the at least a part of the base stations, the number of times corresponding to the number of times the frame information is transmitted from the terminal device within a predetermined period.
  • An information processing method is provided in which the frame information is acquired from the base station.
  • FIG. 1 is an explanatory diagram for describing an example of a system configuration of a communication system according to an embodiment of the present disclosure. It is the block diagram which showed an example of a function structure of the server in the communication system concerning the embodiment. It is the block diagram which showed an example of a function structure of the base station in the communication system which concerns on the embodiment. It is the block diagram which showed an example of a function structure of the terminal device in the communication system which concerns on the embodiment. It is an explanatory view for explaining an example of system configuration of a communication system concerning a 1st embodiment of this indication. It is an explanatory view for explaining an example of rough frame composition of frame information in a communication system concerning the embodiment.
  • FIG. 1 is an explanatory diagram for describing an example of a system configuration of a communication system according to an embodiment of the present disclosure.
  • a communication system 1 includes a server 100, a plurality of wireless communication devices 200, a terminal device 300, and a client 400.
  • transmission and reception of information are performed between the wireless communication device 200 and the terminal device 300 via a wireless communication path.
  • a technique such as a low power wide area (LPWA) with a sub-gigahertz (for example, 900 Hz band) with a wider communication range may be applied.
  • LPWA low power wide area
  • sub-gigahertz for example, 900 Hz band
  • the wireless communication apparatus 200 is an apparatus for providing a wireless communication service to a subordinate apparatus.
  • the wireless communication device 200A is a base station of a cellular system (or a mobile communication system).
  • the base station 200A performs wireless communication with a device (for example, the terminal device 300) located inside the cell N11A of the base station 200A.
  • the base station 200A may transmit a downlink signal to the terminal device 300 and may receive an uplink signal from the terminal device 300.
  • the wireless communication device 200B is a base station of a cellular system (or mobile communication system). That is, the base station 200B performs wireless communication with a device (for example, the terminal device 300) located inside the cell N11B of the base station 200B.
  • base stations 200A and 200B have the same configuration, the following description will focus on base station 200A, and the detailed description of base station 200B may be omitted. Also, in the following description, the wireless communication device 200 is also referred to as a “base station 200”. Moreover, when it only describes as “base station 200”, base station 200A and 200B and base station 200C mentioned later shall also be included. Moreover, when the cells managed by each base station 200 are not particularly distinguished, they may be simply referred to as “cell N11”.
  • the base station 200 may be logically connected to another base station by a predetermined communication interface (for example, an X2 interface). In this case, transmission and reception of control information and the like with the other base station is possible. It may be. Further, the base station 200 is connected to the server 100 via a predetermined network (for example, a higher speed communication line). Based on such a configuration, for example, the base station 200 may acquire various types of information from the terminal device 300 via wireless communication, and transmit at least a part of the acquired information to the server 100. .
  • a predetermined communication interface for example, an X2 interface
  • the base station 200 is connected to the server 100 via a predetermined network (for example, a higher speed communication line). Based on such a configuration, for example, the base station 200 may acquire various types of information from the terminal device 300 via wireless communication, and transmit at least a part of the acquired information to the server 100. .
  • the terminal device 300 is configured as a so-called low cost terminal in which various configurations and functions (for example, configurations and functions related to wireless communication) are limited as compared with a terminal device such as a smartphone that can be applied in IoT. It is also good.
  • the terminal device 300 may have a detection unit such as various sensors, and transmits information indicating various situations and various states according to the detection result by the detection unit to the base station 200 via wireless communication. It is also good.
  • the terminal device 300 can be applied to fields such as fisheries industry and agriculture by being used in combination with detection units such as various sensors. Thus, the terminal device 300 can be used for various applications.
  • the terminal device 300 may be configured to be movable.
  • the terminal device 300 acquires position information indicating its position based on the technology of so-called GNSS (Global Navigation Satellite System) such as GPS (Global Positioning System) or the like, and performs wireless communication.
  • the position information may be transmitted to the base station 200.
  • the terminal device 300 may obtain its own position information by satellite positioning based on a radio signal transmitted from the GPS satellite 500, for example.
  • the terminal device 300 is configured as a device that does not involve movement (for example, a device fixedly installed) such as a power meter or a gas meter, for example, the terminal device 300 relates to acquisition of the above-described position information. It is not necessary to have the function.
  • the terminal device 300 when the terminal device 300 is configured to be movable, a situation may be assumed where the terminal device 300 operates based on the power supply from the battery. Therefore, the terminal device 300 acquires information on the state of the battery (for example, the remaining amount of power of the battery), and controls communication with the base station 200 via wireless communication according to the information. It is also good.
  • the terminal device 300 may communicate with the base station 200 based on the LPWA technology. Therefore, the terminal device 300 may not necessarily be always connected to the base station 200. For example, the terminal device 300 may be connected to the base station 200 at predetermined intervals. In particular, in a situation where a low-cost terminal configured to be movable as the terminal device 300 is applied, for example, battery driving for a long period of several years or more may be assumed, so that constant connection or high speed communication such as a smartphone etc. You may not need it.
  • the terminal device 300 repeatedly transmits information to be transmitted to the base station 200 a plurality of times (in other words, intermittent), such as DRX (Discontinuous Reception) / DTX (Discontinuous Transmission) specified in 3GPP. Sending).
  • the base station 200 superimposes the radio signal repeatedly transmitted from the terminal device 300, and performs demodulation processing on the radio signal whose signal level has been increased along with the superposition, from the terminal device 300.
  • the transmitted data may be decoded.
  • the base station 200 can The radio signal can be demodulated.
  • the configuration of the terminal device 300 described above is merely an example, and the configuration of the terminal device 300 is not necessarily limited.
  • the terminal device 300 may be configured as a terminal device such as a smartphone (for example, LTE, UE in LTE-A).
  • the server 100 is connected to the client 400 via a predetermined network N21.
  • the type of the network N21 is not particularly limited.
  • the network N21 may be configured by a so-called wireless network such as a network based on the Wi-Fi (registered trademark) standard.
  • the network N21 may be configured by the Internet, a dedicated line, a LAN (Local Area Network), a WAN (Wide Area Network), or the like.
  • the network N21 may include a plurality of networks, and at least a part thereof may be configured as a wired network.
  • the server 100 is connected to each base station 200 via a predetermined network. With the above-described configuration, at least some of the base stations 200 can be connected to an application or the like executed by the client 400 via the server 100.
  • the client 400 schematically shows an entity that executes various applications, and the configuration thereof is not particularly limited.
  • the client 400 may be configured as an information processing apparatus such as a PC connected to the network N21.
  • the client 400 may be configured as a wireless communication terminal accessible to the server 100 via a wireless network, such as a smart phone, for example.
  • the client 400 may be a terminal device located in the cell N11 of the base station 200, and the network N21 includes a wireless communication path between the base station 200 and the client 400. It may be
  • server 100 communicates with server 600 (hereinafter, also referred to as “roaming server 600”) managed by another operator via a predetermined network N31 (for example, WAN, Internet, etc.). May be With such a configuration, the server 100 can also transmit and receive information with the base station 200C managed by the other operator via the roaming server 600. That is, the server 100 acquires, from the base station 200C via the roaming server 600, information corresponding to communication between the base station 200C and the terminal device 300 located inside the cell N11C of the base station 200C. It will also be possible.
  • server 600 hereinafter, also referred to as “roaming server 600”
  • a predetermined network N31 for example, WAN, Internet, etc.
  • the base station 200 and the terminal device 300 transmit information transmitted as a radio signal from a satellite such as the GPS satellite 500 to a position between the base station 200 and the terminal device 300. You may use for communication.
  • the base station 200 and the terminal device 300 may perform communication synchronization based on time information (clock data) transmitted from the GPS satellite 500.
  • time information clock data
  • communication synchronization is accurately performed between the base station 200 and the terminal device 300, and the signal strength transmitted and received between the base station 200 and the terminal device 300 is further improved. As a result, communication quality can be further improved.
  • FIG. 2 is a block diagram showing an example of a functional configuration of the server 100 in the communication system according to an embodiment of the present disclosure.
  • the server 100 includes a network communication unit 110, a storage unit 130, and a processing unit 150.
  • the network communication unit 110 exchanges information with other devices. For example, the network communication unit 110 transmits information to the base station 200 and receives information from the base station 200. The network communication unit 110 may also transmit and receive information to and from the client 400 via a predetermined network (for example, the network N21 shown in FIG. 1). Also, the network communication unit 110 may access the roaming server 600 via a predetermined network (for example, the network N31 shown in FIG. 1). As a result, the network communication unit 110 can transmit and receive information via the roaming server 600 with, for example, the base station 200 managed by another operator.
  • a predetermined network for example, the network N21 shown in FIG. 1
  • the network communication unit 110 may access the roaming server 600 via a predetermined network (for example, the network N31 shown in FIG. 1). As a result, the network communication unit 110 can transmit and receive information via the roaming server 600 with, for example, the base station 200 managed by another operator.
  • the processing unit 150 provides various functions of the server 100.
  • the processing unit 150 includes a communication control unit 151, an information acquisition unit 153, a determination unit 155, and a notification unit 157.
  • the communication control unit 151 performs communication processing with another device such as the base station 200, the client 400, and the roaming server 600.
  • the communication control unit 151 combines information (for example, frame information) transmitted from the terminal device 300 to the plurality of base stations 200, and performs demodulation processing on the information after the combination, from the terminal device 300.
  • the data transmitted to the base station 200 may be decoded.
  • the determination unit 155 performs processing related to various determinations. For example, the determination unit 155 may set at least a part of information (for example, a payload included in frame information) among the information transmitted from the terminal device 300 to each of the plurality of base stations 200, among the plurality of base stations 200. It may be determined from which of the two.
  • the determination unit 155 may set at least a part of information (for example, a payload included in frame information) among the information transmitted from the terminal device 300 to each of the plurality of base stations 200, among the plurality of base stations 200. It may be determined from which of the two.
  • the notification unit 157 notifies other devices of various information.
  • the notification unit 157 may notify the client 400 of the information acquired from the base station 200.
  • the processing unit 150 may further include other components in addition to the components described above. That is, the processing unit 150 can perform operations other than the operations of the components described above.
  • FIG. 3 is a block diagram showing an example of a functional configuration of the base station 200 in the communication system according to an embodiment of the present disclosure.
  • the base station 200 includes an antenna unit 210, a wireless communication unit 220, a network communication unit 230, a storage unit 260, and a processing unit 270. Also, the base station 200 may include an antenna unit 240 and a satellite signal reception unit 250.
  • the wireless communication unit 220 transmits and receives signals.
  • the wireless communication unit 220 may transmit a downlink signal to the terminal device 300 or may receive an uplink signal from the terminal device 300.
  • the network communication unit 230 transmits and receives information.
  • the network communication unit 230 transmits information to other nodes and receives information from other nodes.
  • the other node may include another base station 200, and may include a core network node (e.g., the server 100 described above).
  • the storage unit 260 temporarily or permanently stores programs for various operations of the base station 200 and various data.
  • the storage unit 260 stores, for example, various information (for example, frame information) transmitted from the terminal device 300, the reception time of the information, the signal strength of the reception signal, and information of the band used for wireless communication. obtain.
  • the antenna unit 240 converts radio waves (that is, wireless signals) transmitted from satellites such as the GPS satellite 500 into signals, and outputs the signals to the satellite signal receiving unit 250.
  • radio waves that is, wireless signals
  • the processing unit 270 provides various functions of the base station 200.
  • the processing unit 270 includes a communication control unit 271, an information acquisition unit 273, and a notification unit 275.
  • the communication control unit 271 performs communication processing via wireless communication with the terminal device 300. At this time, the communication control unit 271 may decode the information transmitted from the GPS satellite 500 according to the reception result of the signal from the GPS satellite 500 by the satellite signal reception unit 250. Thereby, the communication control unit 271 can also use, for example, the combined information (for example, time information) for synchronization of communication with the terminal device 300.
  • the communication control unit 271 may decode the information transmitted from the GPS satellite 500 according to the reception result of the signal from the GPS satellite 500 by the satellite signal reception unit 250. Thereby, the communication control unit 271 can also use, for example, the combined information (for example, time information) for synchronization of communication with the terminal device 300.
  • the information acquisition unit 273 acquires various types of information.
  • the information acquisition unit 273 may acquire desired information (for example, frame information) from the terminal device 300 based on communication with the terminal device 300.
  • the notification unit 275 notifies various information to other devices such as the server 100 and the terminal device 300.
  • the notification unit 275 may notify the server 100 of at least part of information (for example, frame information) acquired from the terminal device 300.
  • the processing unit 270 may further include other components in addition to the components described above. That is, the processing unit 270 can also perform operations other than the operations of the components described above.
  • the storage unit 360 temporarily or permanently stores programs for the operation of the terminal device 300 and various data.
  • the storage unit 360 may store, for example, identification information of a node (the terminal device 300), various information (for example, position information of the terminal device 300) acquired by the processing unit 270, and the like.
  • the determination unit 375 executes processing relating to various determinations. For example, the determination unit 375 may estimate various states and various situations based on the information acquired by the information acquisition unit 373 and perform determination regarding communication with the base station 200 according to the estimation result. As a more specific example, the determination unit 375 may make a determination regarding repetitive transmission (that is, intermittent transmission) to the base station 200 according to the remaining amount of power of its own battery. Thereby, for example, when the remaining amount of power of the battery is less than the threshold, the communication control unit 371 described above can also suppress power consumption by reducing the number of repeated transmissions.
  • repetitive transmission that is, intermittent transmission
  • the notification unit 377 notifies various types of information to other devices such as the base station 200.
  • the notification unit 377 may notify the base station 200 of various information (for example, position information of the terminal device 300 and the like) acquired by the information acquisition unit 373.
  • the functional configuration of the terminal device 300 shown in FIG. 4 is merely an example, and the configuration of the terminal device 300 is not necessarily limited.
  • the terminal device 300 may include other components in addition to the components described above depending on the application and application field.
  • the terminal device 300 includes a near field communication module such as Bluetooth (registered trademark) or Wi-Fi (registered trademark), a proximity communication module such as NFC (Near Field Communication), and the various sensors described above Etc. may be included.
  • the increase in traffic as described above is not limited to the case of estimating the position of the terminal device. That is, under the situation where information corresponding to communication between each of the plurality of base stations and the terminal device is transmitted from each of the plurality of base stations to the server, the information of the plurality of base stations is similarly There may be increased traffic for data communication between each and the server.
  • an increase in traffic is suppressed in a situation where communication is performed between the base station and the server according to the communication between the terminal device and the base station. And propose a technology that can further improve the operation efficiency of the entire system.
  • FIG. 5 is an explanatory diagram for describing an example of a system configuration of the communication system according to the present embodiment.
  • the communication system according to the present embodiment may be referred to as “communication system 1A” when it is explicitly distinguished from the communication system 1 described with reference to FIG.
  • the terminal device 300 estimates the position of the terminal device 300 under the situation where it is difficult to obtain its own position information by satellite positioning based on the wireless signal transmitted from the GPS satellite 500. The case will be described focusing on the case. That is, the system configuration of the communication system 1A according to the present embodiment shown in FIG.
  • the server 100 acquires, from the base station 200, information according to communication between each of the plurality of base stations 200 and the terminal device 300, and analyzes the acquired information.
  • the position of the terminal device 300 is estimated.
  • the server 100 may estimate the position of the terminal device 300 and feed back the estimation result of the position to the client 400.
  • the information of the part not including the payload is treated individually as the "no payload information".
  • the control information Preamble / Sync
  • the server 100 acquires information from each base station 200 in response to a request for an application executed by the client 400 or the like, and estimates the position of the terminal device 300 based on the information.
  • the server 100 estimates the position of the terminal device 300 before acquiring the payload included in the frame information transmitted from the terminal device 300 to the base station 200, and the payload is acquired. It may be assumed that the position estimation of the terminal device 300 will be performed later. Therefore, hereinafter, the processing sequence is divided into “when position estimation of terminal device 300 is performed before acquisition of payload” and “when position estimation of terminal device 300 is performed after acquisition of payload”. An example will be described.
  • an application is executed in response to a request from the user, and the application requests the server 100 to present location information of the terminal device 300 via the predetermined network N21 (S101).
  • requirement are not specifically limited.
  • the request may be made from the client 400 to the server 100 in response to a user input via the web browser.
  • the application installed on a smartphone, a tablet terminal, or the like may be executed, and the application may issue the request to the server 100 (that is, from the client 400).
  • the terminal device 300 transmits frame information to the neighboring base stations 200 according to a predetermined condition (S105A, S105B, and S105C).
  • the terminal device 300 transmits frame information to the neighboring base stations 200 at predetermined intervals.
  • the terminal device 300 transmits frame information to each of the neighboring base stations 200A, 200B, and 200C.
  • the base stations 200A and 200B are base stations managed by a carrier who manages the server 100, and are under the management of the server 100.
  • base station 200C is a base station managed by another operator different from the one managing base stations 200A and 200B, and is under the management of roaming server 600.
  • the server 100 estimates the position of the terminal device 300 based on the no-payload information transmitted from each of the base stations 200 (ie, the base stations 200A to 200C) (S121). At this time, the server 100 detects various information included in the no-payload information acquired from each of the plurality of base stations 200, for example, information related to the synchronization signal (Sync), reception time, etc.
  • the position or movement state of the terminal device 300 may be estimated based on As a specific example, the server 100 is not limited to merely estimating the position of the terminal device 300 by analyzing time expansion and contraction, phase change, and the like of the synchronization signal included in the no-payload information.
  • the movement situation (for example, movement speed) may be estimated.
  • the server 100 determines the base station 200 that is the acquisition source of the payload included in the frame information transmitted from the terminal device 300 to each of the base stations 200 based on the no-payload information acquired from each of the plurality of base stations 200. .
  • the server 100 selects the base station 200 having the highest received signal strength for receiving frame information from the terminal device 300 among the plurality of base stations 200. , And may be determined as the base station 200 from which the payload is obtained. Then, the server 100 requests the base station 200 determined as a payload acquisition source to transmit the payload (S123).
  • the base station 200 that has received the request transmits a portion corresponding to the payload among the frame information received from the terminal device 300 to the server 100 as payload information (S125).
  • the server 100 reconstructs frame information based on the received payload information and the non-payload received information.
  • the server 100 demodulates and decodes the reconstructed frame information, and compares the demodulation and the identification information of the terminal device 300 obtained as a result of the decoding with registered information managed by itself. Thus, the server 100 confirms that the terminal device 300 that is the transmission source of the frame information is the terminal device 300 that is the target of position estimation according to the request from the application (S127).
  • the server 100 confirms that the terminal device 300 serving as a transmission source of the reconstructed frame information is the terminal device 300 targeted for position estimation, the server 100 applies the previously estimated position information of the terminal device 300 to the application. (S129).
  • the terminal device 300 receives the request from the terminal device 300 based on the reception history of the information from the terminal device 300 and the registration information about the terminal device 300.
  • the estimated time at which the information from is received is estimated (S201).
  • the server 100 waits until the estimated estimated reception time has passed (S203, NO), and when the estimated reception time has elapsed (S203, YES), there is no payload (Payload) from the base station 200 under its control.
  • Information is collected (S205).
  • the server 100 accesses the roaming server 600 operated by another partner (S209). Thereby, the server 100 collects payloadless information from the other base station 200 managed by the roaming server 600 via the roaming server 600 (S205).
  • the server 100 estimates the position of the terminal device 300 based on the collected no-payload information.
  • the server 100 detects various information included in the no-payload information acquired from each of the plurality of base stations 200, for example, information on synchronization signal (Sync), reception time, etc., and position information of each of the plurality of base stations 200.
  • the position or movement state of the terminal device 300 may be estimated based on
  • the server 100 determines the base station 200 which is the acquisition source of the payload included in the frame information transmitted from the terminal device 300 to each of the base stations 200 based on the no-payload information.
  • the server 100 acquires the payload of the base station 200 having the highest received signal strength related to the reception of frame information from the terminal device 300 among the plurality of base stations 200. You may determine as base station 200 which becomes origin (S211). That is, in this case, the non-payload information or the above information included in the non-payload information corresponds to an example of “predetermined control information” for specifying the base station 200 that acquires the payload.
  • the base station 200 When the base station 200 receives frame information from the communication terminal 300, the base station 200 starts the process shown in FIG. That is, the base station 200 first receives frame information from the communication terminal 300 (S251).
  • the base station 200 determines the presence or absence of a request for no payload information from the server 100 (S253).
  • the reception time of the frame information that is the acquisition source of the information, bandwidth information, and the like may be used.
  • the base station 200 receives a request for no-payload information from the server 100 (S 253, YES)
  • the base station 200 extracts the information of the portion not including the payload from the frame information received from the terminal device 300. No information is generated (S255).
  • the base station 200 transmits the generated no-payload information to the server 100 as a response to the request from the server 100 (S257).
  • the base station 200 determines the presence or absence of a request for payload information from the server 100 (S259).
  • the base station 200 receives a request for payload information from the server 100 (S 259, YES)
  • the base station 200 extracts the information of the portion corresponding to the payload from the frame information previously received from the terminal device 300. Information is generated (S261).
  • the base station 200 transmits the generated payload information to the server 100 as a response to the request from the server 100 (S263).
  • the base station 200 may not execute the processing relating to the generation of the payload information and the transmission of the payload information.
  • an application is executed in response to a request from the user, and the application requests the server 100 to present location information of the terminal device 300 via the predetermined network N21 (S301). . Also, when the server 100 receives a request from the application for presenting the position information of the terminal device 300, the terminal device 300 receives the request from the terminal device 300 based on the reception history of the information from the terminal device 300 and the registration information on the terminal device 300. The estimated time at which the information from is received is estimated (S303).
  • the processes indicated by reference numerals S301 and S303 are the same as the example described with reference to FIG. 7 (that is, the processes indicated by reference numerals S101 and S103), and thus detailed description will be omitted.
  • the server 100 requests the base stations 200A and 200B under control of itself to transmit reception information indicating various states and statuses related to reception of frame information from the terminal device 300 (S307A, S307B) .
  • the received information may include, for example, information such as the signal strength of the received signal, the reception time, and the reception band.
  • Each of the base stations 200A and 200B that has received the request transmits the reception information to the server 100 according to the reception status of the frame information from the terminal device 300 (S309A, S309B).
  • the server 100 estimates the position of the terminal device 300 based on the received frame information and information without payload (S333). In addition, about the estimation method of the position of the terminal device 300, it is the same as that of the example (namely, process shown with referential mark S121) demonstrated with reference to FIG.
  • FIG. 11 is a flowchart for describing another example of the flow of the series of processes of the base station 200 according to the present embodiment.
  • the server 100 accesses the roaming server 600 operated by the other business partner to be affiliated (S409). Thereby, the server 100 collects the received information from the other base station 200 managed by the roaming server 600 (S405).
  • the server 100 estimates the position of the terminal device 300 based on the received frame information and no-payload information. In addition, the server 100 demodulates and decodes the received frame information, and compares the identification information of the terminal device 300 obtained as a result of the demodulation and the decoding with registration information managed by itself. Thus, the server 100 confirms that the terminal device 300 that is the transmission source of the frame information is the terminal device 300 that is the target of position estimation according to the request from the application (S413).
  • the server 100 confirms that the terminal device 300 serving as a transmission source of the reconstructed frame information is the terminal device 300 targeted for position estimation, the server 100 applies the previously estimated position information of the terminal device 300 to the application. Send to
  • the base station 200 transmits reception information indicating various states and conditions relating to reception of frame information from the terminal device 300 to the server 100 (S453).
  • the base station 200 determines the presence or absence of a request for no payload information from the server 100 (S459).
  • the base station 200 receives a request for no-payload information from the server 100 (S 459, YES)
  • the base station 200 extracts the information of the portion not containing the payload from the frame information received from the terminal device 300. No information is generated (S461).
  • the base station 200 transmits the generated no-payload information to the server 100 as a response to the request from the server 100 (S463).
  • base station 200 may not execute the process related to the generation of the no payload information and the transmission of the no payload information. .
  • the server transmits frame information transmitted from the target terminal apparatus to each base station only from a part of the plurality of base stations. It is possible to receive the included payload. Therefore, according to the communication system according to the present embodiment, the server and each base station are compared to the case where the entire frame information (in particular, the payload included in the frame information) is transmitted from each of the plurality of base stations to the server. It is possible to limit the traffic of communication between the That is, according to the communication system according to the present embodiment, the operation efficiency of the entire system can be further improved.
  • DRX / DTX Discontinuous Reception / Discontinuous Transmission
  • 3GPP Third Generation Partnership Project
  • the low-cost terminal only performs uplink transmission from the terminal device to the base station, and does not have a function to receive the downlink signal from the base station. is there.
  • DRX / DTX as described above is premised on two-way communication between a terminal device and a base station. Therefore, as described above, in the case where a terminal apparatus capable of only uplink transmission to a base station is assumed, it may be difficult to apply the DRX / DTX technique.
  • this embodiment proposes a technique capable of further improving the operation efficiency of the entire system by further reducing the power consumption of the terminal device.
  • FIG. 13 is an explanatory diagram for describing an example of a system configuration of the communication system according to the present embodiment.
  • the communication system according to the present embodiment may be referred to as a "communication system 1B" when it is explicitly distinguished from the communication system 1 described with reference to FIG.
  • each of reference numerals 300A and 300B corresponds to the terminal device 300 shown in FIG.
  • the configuration to which the same reference numerals as in FIG. 1 are attached indicates the same configuration as the example shown in FIG. 1. Therefore, in the present embodiment, description will be given focusing on parts different from the example described with reference to FIG. 1, and detailed description will be omitted for parts substantially similar to the example described with reference to FIG. .
  • the number of times of the repetitive transmission is controlled according to the remaining amount of power of the battery in each of the terminal devices 300.
  • the terminal device 300B shown in FIG. 13 when the remaining power of the battery is sufficient, the terminal device 300 periodically predefines the same frame every predetermined period. The transmission is repeated a predetermined number of times (for example, eight times).
  • the terminal device 300A shown in FIG. 13 when the remaining power of the battery is sufficient, the terminal device 300 periodically predefines the same frame every predetermined period. The transmission is repeated a predetermined number of times (for example, eight times).
  • the terminal device 300 when the remaining amount of power of the battery is small, the terminal device 300 reduces the number of times of the above-mentioned repetitive transmission for each predetermined period (for example, 2 Time), the execution time of the process concerning transmission may be shortened, and the power consumption of the battery may be suppressed.
  • the server 100 decodes data from a frame from the terminal device 300 for which the number of transmissions has been reduced, a plurality of base stations 200 (for example, a base Collected from stations 200A to 200C) and synthesized. Even when the number of times the same frame is repeatedly transmitted from the terminal device 300 is reduced by such control, the frames corresponding to the reduced number of transmissions are compensated by collecting the frames from more base stations 200. Is possible. Also, in the case where the number of times the same frame is repeatedly transmitted from the terminal device 300 is not reduced, the server 100 may, for example, select the base station 200 closest to the terminal device 300 (in other words, the base station with the highest received signal strength). The frame received by 200) may be acquired from the base station 200, and data may be decoded from the frame.
  • a plurality of base stations 200 for example, a base Collected from stations 200A to 200C
  • the server 100 may, for example, select the base station 200 closest to the terminal device 300 (in other words, the base station with the highest received signal strength).
  • FIG. 14 is an explanatory diagram for describing an example of a frame configuration of a frame in the communication system according to the present embodiment.
  • reference numeral 801 indicates a Physical Layer Convergence Protocol (PLCP) Service Data Unit (PSDU), which includes data transmitted from the terminal device 300 to the base station 200.
  • the data may include, for example, position information of the terminal device 300, identification information of the terminal device 300, information acquired by the terminal device 300 from various sensors, and the like.
  • PLCP Physical Layer Convergence Protocol
  • PSDU Service Data Unit
  • Reference numeral 802 denotes information obtained by encoding PSDU by forward error correction (FEC). Note that, for example, an LDPC code or the like is used for the encoding.
  • FEC forward error correction
  • the reference code 803 may include a plurality of the same FEC encoded blocks (coded blocks). For example, in the case where the number of repeated transmissions is three, three identical blocks are included. As to the last block, in order to adjust the packet length, certain information is removed as Punctured block.
  • Reference numeral 804 denotes data in which guard bits are added to the block indicated by reference numeral 803 before and after.
  • Reference numeral 805 denotes a PLCP Protocol Data Unit (PPDU) generated by inserting a synchronization signal and scrambling the data indicated by reference numeral 804.
  • PPDU PLCP Protocol Data Unit
  • the terminal device 300 applies modulation such as BPSK (Binary Phase Shift Keying) to the PPDU indicated by reference numeral 804, and transmits the frame after the modulation to the base station 200.
  • modulation such as BPSK (Binary Phase Shift Keying)
  • reference numeral 806 schematically shows an example of the case where the same PPDU (in other words, frame) is repeatedly transmitted using M time slots.
  • FIG. 15 is a sequence diagram showing an example of the flow of a series of processes of the communication system according to the present embodiment. Further, in the present description, the communication system is assumed to have a system configuration as shown in FIG.
  • the terminal device 300 receives the radio signal transmitted from the GPS satellite 500, and acquires its own position information based on the reception result of the radio signal (S501).
  • the terminal device 300 counts the number of base stations 200 existing within a prescribed range (for example, within a radius of 2 km, etc.) based on its own position information, and the number of the base stations 200 and the remaining power of the battery. In accordance with, the number of times of repetitive transmission of data such as code blocks and PPDUs is determined (S503). In the present embodiment, data to be repeatedly transmitted, such as the code block and the PPDU, is also referred to as “frame information”.
  • Table 1 shown below shows an example of the relationship between the number of surrounding base stations, the remaining amount of power of the battery, and the number of repeated transmissions.
  • the maximum number of repeated transmissions is eight, the number of repeated transmissions is limited when the number of surrounding base stations 200 is two or more, and the remaining battery capacity is less than or equal to the threshold. ing.
  • the number of repeated transmissions is set to six. That is, when the number of surrounding base stations is two, the number of repeated transmissions is limited when the remaining power of the battery is 30% or less.
  • the number of repeated transmissions is set to six when the remaining power of the battery is 40% or less and more than 30%. Ru. That is, when the number of surrounding base stations is three or more, the number of repeated transmissions is limited when the remaining amount of power of the battery is 40% or less.
  • the terminal device 300 repeatedly transmits frame information based on data (for example, position information of the terminal device 300) to be transmitted to the base station 200 to surrounding base stations 200 according to the determined number of times.
  • data for example, position information of the terminal device 300
  • base stations 200A to 200C exist around the terminal device 300. That is, the frame information transmitted from the terminal device 300 is received by each of the base stations 200A to 200C (S505A to S505C).
  • the unit of repetitive transmission is not particularly limited. That is, the number of code blocks constituting the PPDU may be controlled according to the determined number of repeated transmissions. As another example, the number of time slots for transmitting PPDU may be controlled according to the determined number of repeated transmissions.
  • the number of code blocks and the number of time slots for transmitting PPDU may be separately controlled.
  • Table 2 below shows another example of the relationship between the number of surrounding base stations, the remaining amount of battery power, and the number of repeated transmissions, and the number of code blocks and PPDU transmission An example of individually controlling the number of time slots to be performed is shown.
  • the server 100 responds to information such as the time when reception of frame information from the terminal device 300 is scheduled, and the frequency band used by the terminal device 300 to transmit frame information, etc. Requests transmission of frame information from the terminal device 300 to the target base station 200. For example, in the example illustrated in FIG. 15, the server 100 requests the base station 200A to transmit the frame information (S507A). Then, the server 100 acquires the frame information from the base station 200A as a response to the request (S509A).
  • the server 100 demodulates and analyzes the acquired frame information, and confirms whether the number of times the frame information has been repeatedly transmitted from the terminal device 300 is equal to or less than a threshold (S511).
  • the server 100 is located around the terminal device 300 among the base stations 200 managed by itself and with the above base station 200A. Requests the transmission of frame information from another different base station 200.
  • the server 100 requests the base stations 200B and 200C to transmit the frame information (S507B and S507C).
  • the server 100 acquires the frame information from each of the base stations 200B and 200C as a response to the request (S509B, S509C).
  • the server 100 combines the frame information acquired from each of the base stations 200 (that is, the base stations 200A to 200C), and performs demodulation processing on the frame information whose signal level has increased due to the combination, thereby a terminal device.
  • the data transmitted from 300 is decoded (S513).
  • FIG. 16 is a flowchart for describing an example of a flow of a series of processes of the terminal device 300 according to the present embodiment.
  • the terminal device 300 receives a radio signal transmitted from the GPS satellite 500, and acquires its own position information based on the reception result of the radio signal (S601).
  • the terminal device 300 acquires information on its own battery (that is, information on the remaining amount of power of the battery) (S603).
  • the terminal device 300 determines whether the remaining amount of power of the battery is equal to or less than the threshold value based on the acquired information on the battery (S605).
  • the terminal device 300 determines the number of base stations 200 existing within the prescribed range based on the acquisition result of its own position information (in other words, communication The number of possible base stations 200 is counted, and it is determined whether the number of base stations 200 is equal to or more than a threshold (S607). Specifically, the terminal device 300 collates the position information of each of the base stations 200 acquired in advance with the result of the position information of itself, thereby a base station existing in a defined range centered on itself. It is sufficient to count the number of 200. Of course, the method is not particularly limited as long as the terminal device 300 can recognize the number of base stations 200 existing in the specified range.
  • the terminal device 300 when the terminal device 300 can perform two-way communication with the base station 200, the terminal device 300 transmits a request to the surrounding base station 200, and the terminal device 300 responds to the request. Depending on the number of responses, the number of base stations 200 located in the periphery may be recognized.
  • the terminal device 300 responds to the remaining amount of power of the battery described above and the number of the base stations 200. And control (limit) the number of times of repeated transmission of data (for example, code block and frame information) (S609). On the other hand, if the remaining power of the battery exceeds the threshold (S605, NO), or if the number of base stations 200 present within the prescribed range is less than the threshold (S607, NO), the terminal device 300 It is not necessary to control the number of repeated transmissions.
  • the terminal device 300 repeatedly transmits data to the surrounding base stations 200 according to the number of the repeated transmission finally determined (S611).
  • FIG. 17 is a flowchart for describing another example of the flow of the series of processes of the server 100 according to the present embodiment.
  • the server 100 When the scheduled time at which frame information is received from the target terminal device 300 by the base station 200 has passed, the server 100 requests the base station 200 to transmit the frame information, and the frame information is transmitted to the base station. It acquires from 200 (S651).
  • the server 100 may acquire frame information from the base station 200 corresponding to the area where the terminal device 300 has been set up. Also, for the subsequent steps, the server 100 may acquire frame information transmitted from the terminal device 300 from the base station 200 according to the position information transmitted by the terminal device 300.
  • the server 100 demodulates and analyzes the acquired frame information (S653), and confirms whether the number of times the frame information has been repeatedly transmitted from the terminal device 300 is equal to or less than a threshold (S655).
  • the server 100 transmits to another base station 200 located around the target terminal device 300 among the base stations 200 managed by itself. Request transmission of frame information. Then, the server 100 acquires the frame information from the other base station 200 as a response to the request (S657). Then, the server 100 combines the frame information acquired from the respective base stations 200 to generate frame information in which the signal level is further increased.
  • the server 100 does not execute the process related to acquisition of frame information from another base station 200 or the process related to combining frame information. May be
  • the server 100 performs demodulation processing on the frame information to decode the data transmitted from the terminal device 300 (S661).
  • the terminal device controls so that frame information (for example, code block, PPDU, etc.) is repeatedly transmitted to one or more base stations via wireless communication. .
  • the terminal device acquires information on the state of the battery. Then, the terminal device transmits frame information within a predetermined period to one or more of the base stations according to the state of the battery and the number of base stations that can transmit frame information via the wireless communication. Control the number of times that is sent.
  • the server acquires frame information repeatedly transmitted from the terminal device to one or more base stations via wireless communication from at least some of the one or more base stations, and the acquired information Demodulates data from frame information. At this time, the frame information is acquired from the number of base stations according to the number of times the frame information is transmitted from the terminal device within a predetermined period.
  • the terminal device has the remaining power of the battery, the number of surrounding base stations (that is, the number of base stations capable of transmitting frame information), and In accordance with the above, it is possible to suppress the consumption of power related to transmission of frame information.
  • the number of repeated transmissions is controlled in consideration of the number of base stations around the terminal device, thereby consuming power related to transmission of frame information. The effect that the amount can be further suppressed can be expected. Further, even when the number of times of repeated transmission is small, it is possible to improve the performance concerning demodulation of data transmitted from the terminal device 300 by combining frame information received by a plurality of base stations.
  • FIG. 18 is a functional block diagram showing an example of a hardware configuration of an information processing apparatus that constitutes a communication system according to an embodiment of the present disclosure.
  • An information processing apparatus 900 constituting a system according to the present embodiment mainly includes a CPU 901, a ROM 902, and a RAM 903.
  • the information processing apparatus 900 further includes a host bus 907, a bridge 909, an external bus 911, an interface 913, an input device 915, an output device 917, a storage device 919, a drive 921 and a connection port 923. And a communication device 925.
  • the CPU 901 functions as an arithmetic processing unit and a control unit, and controls the entire operation or a part of the information processing apparatus 900 according to various programs recorded in the ROM 902, the RAM 903, the storage device 919, or the removable recording medium 927.
  • the ROM 902 stores programs used by the CPU 901, calculation parameters, and the like.
  • the RAM 903 temporarily stores a program used by the CPU 901, parameters which appropriately change in the execution of the program, and the like. These are mutually connected by a host bus 907 constituted by an internal bus such as a CPU bus.
  • a host bus 907 constituted by an internal bus such as a CPU bus.
  • the host bus 907 is connected to an external bus 911 such as a peripheral component interconnect / interface (PCI) bus via the bridge 909. Further, an input device 915, an output device 917, a storage device 919, a drive 921, a connection port 923, and a communication device 925 are connected to the external bus 911 via an interface 913.
  • PCI peripheral component interconnect / interface
  • the input device 915 is an operation unit operated by the user, such as a mouse, a keyboard, a touch panel, a button, a switch, a lever, and a pedal.
  • the input device 915 may be, for example, a remote control means (so-called remote control) using infrared rays or other radio waves, or an externally connected device such as a mobile phone or PDA corresponding to the operation of the information processing apparatus 900. It may be 929.
  • the input device 915 includes, for example, an input control circuit that generates an input signal based on the information input by the user using the above-described operation means, and outputs the generated input signal to the CPU 901.
  • the user of the information processing apparatus 900 can input various data to the information processing apparatus 900 and instruct processing operations by operating the input device 915.
  • the output device 917 is configured of a device capable of visually or aurally notifying the user of the acquired information.
  • Such devices include display devices such as CRT display devices, liquid crystal display devices, plasma display devices, EL display devices and lamps, audio output devices such as speakers and headphones, and printer devices.
  • the output device 917 outputs, for example, results obtained by various processes performed by the information processing apparatus 900.
  • the display device displays the result obtained by the various processes performed by the information processing apparatus 900 as text or an image.
  • the audio output device converts an audio signal composed of reproduced audio data, acoustic data and the like into an analog signal and outputs it.
  • the storage device 919 is a device for data storage configured as an example of a storage unit of the information processing device 900.
  • the storage device 919 is configured of, for example, a magnetic storage unit device such as a hard disk drive (HDD), a semiconductor storage device, an optical storage device, a magneto-optical storage device, or the like.
  • the storage device 919 stores programs executed by the CPU 901, various data, and the like.
  • the storage unit 130 illustrated in FIG. 2 and the storage unit 260 illustrated in FIG. 3 may be realized by the storage device 919.
  • the drive 921 is a reader / writer for a recording medium, and is built in or externally attached to the information processing apparatus 900.
  • the drive 921 reads out information recorded in a removable recording medium 927 such as a mounted magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, and outputs the information to the RAM 903.
  • the drive 921 can also write a record on a removable recording medium 927 such as a mounted magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory.
  • the removable recording medium 927 is, for example, a DVD medium, an HD-DVD medium, a Blu-ray (registered trademark) medium, or the like.
  • the removable recording medium 927 may be Compact Flash (registered trademark) (CF: Compact Flash), a flash memory, an SD memory card (Secure Digital memory card), or the like.
  • the removable recording medium 927 may be, for example, an IC card (Integrated Circuit card) equipped with a non-contact IC chip, an electronic device, or the like.
  • the connection port 923 is a port for direct connection to the information processing apparatus 900.
  • Examples of the connection port 923 include a Universal Serial Bus (USB) port, an IEEE 1394 port, and a Small Computer System Interface (SCSI) port.
  • USB Universal Serial Bus
  • SCSI Small Computer System Interface
  • As another example of the connection port 923 there are an RS-232C port, an optical audio terminal, a high-definition multimedia interface (HDMI (registered trademark)) port, and the like.
  • HDMI registered trademark
  • the communication device 925 is, for example, a communication interface configured of a communication device or the like for connecting to a communication network (network) 931.
  • the communication device 925 is, for example, a communication card for a wired or wireless LAN (Local Area Network), Bluetooth (registered trademark) or WUSB (Wireless USB).
  • the communication device 925 may be a router for optical communication, a router for Asymmetric Digital Subscriber Line (ADSL), a modem for various communications, or the like.
  • the communication device 925 can transmit and receive signals and the like according to a predetermined protocol such as TCP / IP, for example, with the Internet or another communication device.
  • the communication network 931 connected to the communication device 925 is configured by a network or the like connected by wire or wireless, and may be, for example, the Internet, home LAN, infrared communication, radio wave communication, satellite communication, etc. .
  • the network communication unit 110 shown in FIG. 2 the wireless communication unit 220, the network communication unit 230, and the satellite signal reception unit 250 shown in FIG.
  • a computer program for realizing each function of the information processing apparatus 900 constituting the information processing system according to the present embodiment as described above can be prepared and implemented on a personal computer or the like.
  • a computer readable recording medium in which such a computer program is stored can be provided.
  • the recording medium is, for example, a magnetic disk, an optical disk, a magneto-optical disk, a flash memory or the like.
  • the above computer program may be distributed via, for example, a network without using a recording medium.
  • the number of computers that execute the computer program is not particularly limited. For example, a plurality of computers (for example, a plurality of servers and the like) may execute the computer program in cooperation with each other.
  • An information processing apparatus comprising: (2) The processor according to (1), wherein the base station for acquiring the payload is specified from the plurality of base stations according to the strength of the signal received from the terminal device in each of the plurality of base stations.
  • Information processing equipment is also within the technical scope of the present disclosure.
  • the processing unit estimates the position of the terminal apparatus based on predetermined control information which is included in the frame information and is different from the payload, which is obtained from each of the plurality of base stations.
  • the information processing apparatus according to (2) The information processing apparatus according to (2).
  • the information processing apparatus according to (4), wherein the predetermined control information related to the frame information is predetermined control information different from the payload.
  • the acquisition unit is configured to acquire the payload from the base station by acquiring the frame information from the identified base station before the position of the terminal device is estimated. Information processing device.
  • the information processing apparatus wherein the predetermined control information related to the frame information is information according to the reception status of the frame information by the base station.
  • the acquisition unit acquires the control information from another base station not included in the plurality of base stations when the number of the base stations that acquired predetermined control information different from the payload is less than a threshold.
  • the processing unit estimates the position of the terminal apparatus based on the control information acquired by each of the plurality of base stations and the other base station.
  • the information processing apparatus according to any one of (3) to (7).
  • An acquisition unit that acquires frame information from a terminal device via wireless communication;
  • a control unit configured to control predetermined control information related to the acquired frame information to be transmitted to a predetermined server; Equipped with The control unit controls, in response to a request from the server, a payload included in the frame information to be transmitted to the server. base station.
  • the control unit The control information is controlled to be transmitted to the server as predetermined control information which is included in the frame information and which is different from the payload. After transmission of the control information, in response to a request from the server, control is performed such that the payload is transmitted to the server.
  • the base station according to (9).
  • the control unit is configured to transmit, to the server, one of the frame information and predetermined control information different from the payload included in the frame information in response to a request from the server.
  • the base station according to (9), which controls.
  • (12) A control unit that controls frame information to be repeatedly transmitted to one or more base stations via wireless communication; An acquisition unit that acquires information on the state of the battery; Equipped with The control unit performs the process within a predetermined period for one or more of the base stations according to the state of the battery and the number of the base stations capable of transmitting the frame information via the wireless communication. Control the number of times frame information is sent, Terminal equipment.
  • the information on the state of the battery includes information on the remaining amount of power of the battery,
  • the control unit limits the number of times the frame information is transmitted within the predetermined period as the remaining amount of power of the battery is smaller.
  • (14) The terminal according to (12) or (13), wherein, when the number of base stations capable of transmitting the frame information is less than a threshold, the control unit suppresses restriction on the number of times the frame information is transmitted. apparatus.
  • An acquisition unit that acquires frame information repeatedly transmitted from the terminal device to one or more base stations via wireless communication from at least a part of the one or more base stations;
  • a processing unit that demodulates data from frame information acquired from the at least some of the base stations; Equipped with The frame information is acquired from the number of base stations according to the number of times the frame information is transmitted from the terminal device within a predetermined period.
  • Information processing device 17.
  • the computer is Obtaining predetermined control information related to frame information transmitted from the terminal device to each of the plurality of base stations via wireless communication from each of the plurality of base stations; Identifying the base station for acquiring the payload included in the frame information based on the control information acquired from each of the plurality of base stations; Information processing methods, including: (19) The computer is Obtaining frame information from a terminal device via wireless communication; Controlling that predetermined control information related to the acquired frame information is transmitted to a predetermined server; Controlling that a payload included in the frame information is transmitted to the server in response to a request from the server; Information processing methods, including: (20) The computer is Controlling frame information to be repeatedly transmitted to one or more base stations via wireless communication; Obtaining information about the state of the battery; The frame information is transmitted within a predetermined period to one or more of the base stations according to the state of the battery and the number of the base stations capable of transmitting the frame information through the wireless communication.
  • Controlling the number of Information processing methods including: (21)
  • the computer is Obtaining frame information repeatedly transmitted from the terminal device to one or more base stations via wireless communication from at least a part of the one or more base stations; Demodulating data from frame information obtained from the at least some base stations; Including The frame information is acquired from the number of base stations according to the number of times the frame information is transmitted from the terminal device within a predetermined period.
  • Information processing method including: (21) The computer is Obtaining frame information repeatedly transmitted from the terminal device to one or more base stations via wireless communication from at least a part of the one or more base stations; Demodulating data from frame information obtained from the at least some base stations; Including The frame information is acquired from the number of base stations according to the number of times the frame information is transmitted from the terminal device within a predetermined period. Information processing method.
  • 1, 1A, 1B communication system 100 server 110 network communication unit 130 storage unit 150 processing unit 151 communication control unit 153 information acquisition unit 155 determination unit 157 notification unit 200 base station 210 antenna unit 220 wireless communication unit 230 network communication unit 240 antenna unit 250 satellite signal reception unit 260 storage unit 270 processing unit 271 communication control unit 273 information acquisition unit 275 notification unit 300 terminal device 310 antenna unit 320 wireless communication unit 340 antenna unit 350 satellite signal reception unit 360 storage unit 370 processing unit 371 communication control unit 373 information acquisition unit 375 determination unit 377 notification unit 400 client 500 GPS satellite 600 roaming server

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Abstract

[Problem] To make the operation of a system including wireless communication more efficient. [Solution] An information processing device provided with: an acquisition unit which acquires, from each of a plurality of base stations, predetermined control information related to frame information transmitted from a terminal device to the plurality of base stations via wireless communication; and a processing unit which, on the basis of the control information acquired from each of the plurality of base stations, specifies the base station that acquires a payload included in the frame information.

Description

情報処理装置、基地局、端末装置、及び情報処理方法INFORMATION PROCESSING APPARATUS, BASE STATION, TERMINAL APPARATUS, AND INFORMATION PROCESSING METHOD
　本開示は、情報処理装置、基地局、端末装置、及び情報処理方法に関する。 The present disclosure relates to an information processing device, a base station, a terminal device, and an information processing method.
　近年、ＩｏＴ（Internet　of　Things）関連の研究開発が盛んに行われている。ＩｏＴでは、様々な物がネットワークに接続されて情報交換を行うため、無線通信が重要な技術テーマになっている。そのため、例えば、ＭＴＣ（Machine　Type　Communication）及びＮＢ－ＩｏＴ（Narrow　Band　IoT）等のような、ＩｏＴ向け通信の規格化が行われている。特に、ＩｏＴについては、上述したような特性から、例えば、農業分野や水産業分野への適用等のように、適用先が従来の分野に限らず多様化する傾向にあり、無線通信システムに適用される端末装置についても、スマートフォン等のような従来の装置には限られない。具体的な一例として、従来の端末装置に比べて構成がより簡素化されることで、低いコストで導入することが可能な所謂ローコスト端末を適用することも可能となる。 In recent years, research and development related to IoT (Internet of Things) has been actively conducted. In IoT, wireless communication is an important technology theme because various things are connected to a network to exchange information. Therefore, for example, standardization of communication for IoT such as Machine Type Communication (MTC) and Narrow Band IoT (NB-IoT) has been performed. In particular, IoT tends to be applied to various fields such as agriculture and fisheries because of the above-mentioned characteristics. The terminal device to be used is not limited to the conventional device such as a smartphone. As a specific example, as the configuration is further simplified as compared with the conventional terminal device, it becomes possible to apply a so-called low cost terminal which can be introduced at low cost.
　また、上述したＩｏＴを実現するための技術として、ＬＰＷＡ（Low　Power　Wide　Area）の適用が検討されている。ＬＰＷＡは、低い消費電力で、広い領域にわたった通信（換言すると、遠距離通信）を実現可能とする無線通信技術（通信方式）である。 In addition, as a technology for realizing the above-described IoT, application of Low Power Wide Area (LPWA) is being studied. The LPWA is a wireless communication technology (communication method) that enables low-power consumption and wide-area communication (in other words, long-distance communication) to be realized.
特開２０１５－８５３２号公報JP, 2015-8532, A
　ところで、上述したような所謂無線通信においては、システム全体として利用可能な通信リソースや、各端末装置が利用可能な電力等が制限されている傾向にあり、より効率的なシステムの運用を実現するための技術が求められる場合がある。例えば、特許文献１には、ＬＴＥ等の規格に基づく無線通信システムにおいて、端末装置が利用可能な電力を効率的に利用可能とする技術の一例が開示されている。 By the way, in the so-called wireless communication as described above, communication resources available as the whole system and power available to each terminal device tend to be restricted, and more efficient system operation is realized. Technology may be required. For example, Patent Document 1 discloses an example of a technology that enables efficient use of available power of a terminal device in a wireless communication system based on a standard such as LTE.
　特に、ＩｏＴ関連の技術により、無線通信システムの適用分野は、前述したように従来の無線システムに比べてより多様化しており、当該適用分野の多様化に伴い、端末装置の数もより増大する傾向にある。このような状況から、無線通信を含むシステム全体の運用をさらに効率化することが可能な仕組みが求められている。 In particular, due to IoT related technologies, the application fields of wireless communication systems are more diversified as compared with conventional wireless systems as described above, and with the diversification of application fields, the number of terminal devices also increases. There is a tendency. Under such circumstances, there is a need for a mechanism that can further streamline the operation of the entire system including wireless communication.
　そこで、本開示では、無線通信を含むシステムの運用をより効率化することが可能な技術について提案する。 Thus, the present disclosure proposes a technique that can make the operation of a system including wireless communication more efficient.
　本開示によれば、端末装置から複数の基地局それぞれに無線通信を介して送信されたフレーム情報に関連する所定の制御情報を、当該複数の基地局それぞれから取得する取得部と、前記複数の基地局それぞれから取得された前記制御情報に基づき、前記フレーム情報に含まれるペイロードを取得する前記基地局を特定する処理部と、を備える、情報処理装置が提供される。 According to the present disclosure, an acquisition unit acquires, from each of the plurality of base stations, predetermined control information related to frame information transmitted from the terminal device to each of the plurality of base stations through wireless communication; An information processing apparatus is provided, comprising: a processing unit that specifies the base station that acquires a payload included in the frame information based on the control information acquired from each of the base stations.
　また、本開示によれば、端末装置から無線通信を介してフレーム情報を取得する取得部と、取得された前記フレーム情報に関連する所定の制御情報が、所定のサーバに送信されるように制御する制御部と、を備え、前記制御部は、前記サーバからの要求に応じて、前記フレーム情報に含まれるペイロードが当該サーバに送信されるように制御する、基地局が提供される。 Further, according to the present disclosure, an acquisition unit that acquires frame information from a terminal device via wireless communication, and control such that predetermined control information related to the acquired frame information is transmitted to a predetermined server There is provided a base station comprising: a control unit, wherein the control unit controls a payload included in the frame information to be transmitted to the server in response to a request from the server.
　また、本開示によれば、無線通信を介して１以上の基地局にフレーム情報が繰り返し送信されるように制御する制御部と、バッテリーの状態に関する情報を取得する取得部と、を備え、前記制御部は、前記バッテリーの状態と、前記無線通信を介して前記フレーム情報を送信可能な前記基地局の数と、に応じて、１以上の前記基地局に対して所定の期間内に前記フレーム情報が送信される回数を制御する、端末装置が提供される。 Further, according to the present disclosure, a control unit configured to control frame information to be repeatedly transmitted to one or more base stations via wireless communication, and an acquisition unit configured to acquire information related to the state of the battery, A control unit controls the frame within a predetermined period with respect to one or more of the base stations according to the state of the battery and the number of the base stations capable of transmitting the frame information through the wireless communication. A terminal device is provided that controls the number of times information is transmitted.
　また、本開示によれば、端末装置から無線通信を介して１以上の基地局に繰り返し送信されるフレーム情報を、当該１以上の基地局のうちの少なくとも一部の基地局から取得する取得部と、前記少なくとも一部の基地局から取得されたフレーム情報からデータを復調する処理部と、を備え、所定の期間内に前記端末装置から前記フレーム情報が送信される回数に応じた数の前記基地局から、当該フレーム情報が取得される、情報処理装置が提供される。 Further, according to the present disclosure, an acquisition unit that acquires frame information repeatedly transmitted from a terminal apparatus to one or more base stations via wireless communication from at least some of the one or more base stations. And a processing unit that demodulates data from frame information acquired from the at least a part of the base stations, and the number of the frames according to the number of times the frame information is transmitted from the terminal device within a predetermined period. An information processing apparatus is provided in which the frame information is acquired from a base station.
　また、本開示によれば、コンピュータが、端末装置から複数の基地局それぞれに無線通信を介して送信されたフレーム情報に関連する所定の制御情報を、当該複数の基地局それぞれから取得することと、前記複数の基地局それぞれから取得された前記制御情報に基づき、前記フレーム情報に含まれるペイロードを取得する前記基地局を特定することと、を含む、情報処理方法が提供される。 Further, according to the present disclosure, the computer acquires predetermined control information related to frame information transmitted from the terminal device to each of the plurality of base stations from each of the plurality of base stations. An information processing method is provided, including: identifying the base station that acquires a payload included in the frame information based on the control information acquired from each of the plurality of base stations.
　また、本開示によれば、コンピュータが、端末装置から無線通信を介してフレーム情報を取得することと、取得された前記フレーム情報に関連する所定の制御情報が、所定のサーバに送信されるように制御することと、前記サーバからの要求に応じて、前記フレーム情報に含まれるペイロードが当該サーバに送信されるように制御することと、を含む、情報処理方法が提供される。 Further, according to the present disclosure, a computer may acquire frame information from a terminal device via wireless communication, and predetermined control information related to the acquired frame information may be transmitted to a predetermined server. An information processing method is provided that includes: controlling and, in response to a request from the server, controlling a payload included in the frame information to be transmitted to the server.
　また、本開示によれば、コンピュータが、無線通信を介して１以上の基地局にフレーム情報が繰り返し送信されるように制御することと、バッテリーの状態に関する情報を取得することと、前記バッテリーの状態と、前記無線通信を介して前記フレーム情報を送信可能な前記基地局の数と、に応じて、１以上の前記基地局に対して所定の期間内に前記フレーム情報が送信される回数を制御することと、を含む、情報処理方法が提供される。 Also, according to the present disclosure, the computer controls the frame information to be repeatedly transmitted to one or more base stations via wireless communication, obtaining information on the state of the battery, and The number of times the frame information is transmitted within a predetermined period to one or more of the base stations according to the state and the number of base stations that can transmit the frame information via the wireless communication An information processing method is provided, including controlling.
　また、本開示によれば、コンピュータが、端末装置から無線通信を介して１以上の基地局に繰り返し送信されるフレーム情報を、当該１以上の基地局のうちの少なくとも一部の基地局から取得することと、前記少なくとも一部の基地局から取得されたフレーム情報からデータを復調することと、を含み、所定の期間内に前記端末装置から前記フレーム情報が送信される回数に応じた数の前記基地局から、当該フレーム情報が取得される、情報処理方法が提供される。 Further, according to the present disclosure, a computer acquires frame information repeatedly transmitted from a terminal device to one or more base stations via wireless communication from at least some of the one or more base stations. And demodulating data from frame information acquired from the at least a part of the base stations, the number of times corresponding to the number of times the frame information is transmitted from the terminal device within a predetermined period. An information processing method is provided in which the frame information is acquired from the base station.
　以上説明したように本開示によれば、無線通信を含むシステムの運用をより効率化することが可能な技術が提供される。 As described above, according to the present disclosure, it is possible to provide a technology that can make the operation of a system including wireless communication more efficient.
　なお、上記の効果は必ずしも限定的なものではなく、上記の効果とともに、または上記の効果に代えて、本明細書に示されたいずれかの効果、または本明細書から把握され得る他の効果が奏されてもよい。 Note that the above-mentioned effects are not necessarily limited, and, along with or in place of the above-mentioned effects, any of the effects shown in the present specification, or other effects that can be grasped from the present specification May be played.
本開示の一実施形態に係る通信システムのシステム構成の一例について説明するための説明図である。BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an explanatory diagram for describing an example of a system configuration of a communication system according to an embodiment of the present disclosure. 同実施形態に係る通信システムにおけるサーバの機能構成の一例を示したブロック図である。It is the block diagram which showed an example of a function structure of the server in the communication system concerning the embodiment. 同実施形態に係る通信システムにおける基地局の機能構成の一例を示したブロック図である。It is the block diagram which showed an example of a function structure of the base station in the communication system which concerns on the embodiment. 同実施形態に係る通信システムにおける端末装置の機能構成の一例を示したブロック図である。It is the block diagram which showed an example of a function structure of the terminal device in the communication system which concerns on the embodiment. 本開示の第１の実施形態に係る通信システムのシステム構成の一例について説明するための説明図である。It is an explanatory view for explaining an example of system configuration of a communication system concerning a 1st embodiment of this indication. 同実施形態に係る通信システムにおけるフレーム情報の概略的なフレーム構成の一例について説明するための説明図である。It is an explanatory view for explaining an example of rough frame composition of frame information in a communication system concerning the embodiment. 同実施形態に係る通信システムの一連の処理の流れの一例を示したシーケンス図である。It is the sequence diagram which showed an example of the flow of a series of processes of the communication system concerning the embodiment. 同実施形態に係るサーバの一連の処理の流れの一例について説明するためのフローチャートである。It is a flow chart for explaining an example of a flow of a series of processings of a server concerning the embodiment. 同実施形態に係る基地局の一連の処理の流れの一例について説明するためのフローチャートである。It is a flowchart for demonstrating an example of the flow of a series of processes of the base station which concerns on the embodiment. 同実施形態に係る通信システムの一連の処理の流れの他の一例を示したシーケンス図である。It is the sequence diagram which showed another example of the flow of a series of processes of the communication system concerning the embodiment. 同実施形態に係る基地局の一連の処理の流れの他の一例について説明するためのフローチャートである。It is a flowchart for demonstrating another example of the flow of a series of processes of the base station which concerns on the embodiment. 同実施形態に係る基地局の一連の処理の流れの他の一例について説明するためのフローチャートである。It is a flowchart for demonstrating another example of the flow of a series of processes of the base station which concerns on the embodiment. 本開示の第２の実施形態に係る通信システムのシステム構成の一例について説明するための説明図である。It is an explanatory view for explaining an example of system configuration of a communication system concerning a 2nd embodiment of this indication. 同実施形態に係る通信システムにおけるフレームのフレーム構成の一例について説明するための説明図である。It is an explanatory view for explaining an example of frame composition of a frame in a communication system concerning the embodiment. 同実施形態に係る通信システムの一連の処理の流れの一例について示したシーケンス図である。It is the sequence diagram shown about an example of a flow of a series of processings of the communication system concerning the embodiment. 同実施形態に係る端末装置の一連の処理の流れの一例について説明するためのフローチャートである。It is a flow chart for explaining an example of a flow of a series of processings of a terminal unit concerning the embodiment. 同実施形態に係るサーバの一連の処理の流れの他の一例について説明するためのフローチャートである。It is a flowchart for demonstrating another example of the flow of a series of processes of the server which concerns on the embodiment. 本開示の一実施形態に係る通信システムを構成する情報処理装置のハードウェア構成の一構成例を示す機能ブロック図である。It is a functional block diagram showing an example of 1 composition of hardware constitutions of an information processor which constitutes a communications system concerning one embodiment of this indication.
　以下に添付図面を参照しながら、本開示の好適な実施の形態について詳細に説明する。なお、本明細書及び図面において、実質的に同一の機能構成を有する構成要素については、同一の符号を付することにより重複説明を省略する。 Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the present specification and the drawings, components having substantially the same functional configuration will be assigned the same reference numerals and redundant description will be omitted.
　なお、説明は以下の順序で行うものとする。
　１．概略構成
　　１．１．システム構成
　　１．２．サーバの構成
　　１．３．基地局の構成
　　１．４．端末装置の構成
　２．第１の実施の形態
　　２．１．技術的課題
　　２．２．技術的特徴
　　　２．２．１．システム構成
　　　２．２．２．フレーム構成
　　　２．２．３．処理
　　２．３．評価
　３．第２の実施の形態
　　３．１．技術的課題
　　３．２．技術的特徴
　　　３．２．１．システム構成
　　　３．２．２．フレーム構成
　　　３．２．３．処理
　　３．３．評価
　４．ハードウェア構成
　５．むすび The description will be made in the following order.
1. Schematic Configuration 1.1. System configuration 1.2. Configuration of Server 1.3. Base station configuration 1.4. Configuration of terminal device First Embodiment 2.1. Technical issues 2.2. Technical features 2.2.1. System configuration 2.2.2. Frame configuration 2.2.3. Processing 2.3. Evaluation 3. Second Embodiment 3.1. Technical issues 3.2. Technical Features 3.2.1. System configuration 3.2.2. Frame configuration 3.2.3. Processing 3.3. Evaluation 4. Hardware configuration 5. The end
　＜＜１．概略構成＞＞
　以下に、本実施形態に係る通信システムの概略構成について説明する。 << 1. Outline configuration >>
The schematic configuration of the communication system according to the present embodiment will be described below.
　　＜１．１．システム構成＞
　まず、図１を参照して、本開示の一実施形態に係る通信システムのシステム構成の一例について説明する。図１は、本開示の一実施形態に係る通信システムのシステム構成の一例について説明するための説明図である。 <1.1. System configuration>
First, an example of a system configuration of a communication system according to an embodiment of the present disclosure will be described with reference to FIG. FIG. 1 is an explanatory diagram for describing an example of a system configuration of a communication system according to an embodiment of the present disclosure.
　図１に示すように、本開示の一実施形態に係る通信システム１は、サーバ１００と、複数の無線通信装置２００と、端末装置３００と、クライアント４００と、を含む。本実施形態に係る通信システム１において、無線通信装置２００と端末装置３００との間では、無線の通信経路を介して情報の送受信が行われる。なお、無線通信装置２００と端末装置３００との間の通信に対して、通信範囲のより広いサブギガヘルツ（例えば、９００Ｈｚ帯）のＬＰＷＡ（Low　Power　Wide　Area）等の技術が適用されてもよい。 As shown in FIG. 1, a communication system 1 according to an embodiment of the present disclosure includes a server 100, a plurality of wireless communication devices 200, a terminal device 300, and a client 400. In the communication system 1 according to the present embodiment, transmission and reception of information are performed between the wireless communication device 200 and the terminal device 300 via a wireless communication path. Note that, for communication between the wireless communication device 200 and the terminal device 300, a technique such as a low power wide area (LPWA) with a sub-gigahertz (for example, 900 Hz band) with a wider communication range may be applied.
　無線通信装置２００は、配下の装置に無線通信サービスを提供する装置である。例えば、無線通信装置２００Ａは、セルラーシステム（又は移動体通信システム）の基地局である。基地局２００Ａは、当該基地局２００ＡのセルＮ１１Ａの内部に位置する装置（例えば、端末装置３００）との無線通信を行う。例えば、基地局２００Ａは、端末装置３００へのダウンリンク信号を送信してもよく、端末装置３００からのアップリンク信号を受信してもよい。同様に、無線通信装置２００Ｂは、セルラーシステム（又は移動体通信システム）の基地局である。即ち、基地局２００Ｂは、基地局２００ＢのセルＮ１１Ｂの内部に位置する装置（例えば、端末装置３００）との無線通信を行う。なお、基地局２００Ａ及び２００Ｂは同様の構成を有するため、以降の説明では、基地局２００Ａに着目して説明し、基地局２００Ｂについては詳細な説明を省略する場合がある。また、以降の説明では、無線通信装置２００を、「基地局２００」とも称する。また、単に「基地局２００」と記載した場合には、基地局２００Ａ及び２００Ｂや後述する基地局２００Ｃも含み得るものとする。また、各基地局２００が管理するセルを特に区別しない場合には、単に「セルＮ１１」と称する場合がある。 The wireless communication apparatus 200 is an apparatus for providing a wireless communication service to a subordinate apparatus. For example, the wireless communication device 200A is a base station of a cellular system (or a mobile communication system). The base station 200A performs wireless communication with a device (for example, the terminal device 300) located inside the cell N11A of the base station 200A. For example, the base station 200A may transmit a downlink signal to the terminal device 300 and may receive an uplink signal from the terminal device 300. Similarly, the wireless communication device 200B is a base station of a cellular system (or mobile communication system). That is, the base station 200B performs wireless communication with a device (for example, the terminal device 300) located inside the cell N11B of the base station 200B. Since base stations 200A and 200B have the same configuration, the following description will focus on base station 200A, and the detailed description of base station 200B may be omitted. Also, in the following description, the wireless communication device 200 is also referred to as a “base station 200”. Moreover, when it only describes as "base station 200", base station 200A and 200B and base station 200C mentioned later shall also be included. Moreover, when the cells managed by each base station 200 are not particularly distinguished, they may be simply referred to as “cell N11”.
　基地局２００は、他の基地局と所定の通信インタフェース（例えば、Ｘ２インタフェース）により論理的に接続されていてもよく、この場合には、当該他の基地局と制御情報等の送受信が可能であってもよい。また、基地局２００は、所定のネットワーク（例えば、より高速な通信回線）を介してサーバ１００と接続されている。このような構成の基で、例えば、基地局２００は、端末装置３００から無線通信を介して各種情報を取得し、取得した当該情報のうち少なくとも一部の情報をサーバ１００に送信してもよい。 The base station 200 may be logically connected to another base station by a predetermined communication interface (for example, an X2 interface). In this case, transmission and reception of control information and the like with the other base station is possible. It may be. Further, the base station 200 is connected to the server 100 via a predetermined network (for example, a higher speed communication line). Based on such a configuration, for example, the base station 200 may acquire various types of information from the terminal device 300 via wireless communication, and transmit at least a part of the acquired information to the server 100. .
　端末装置３００は、例えば、ＩｏＴで適用され得る、スマートフォン等のような端末装置と比べて各種構成や機能（例えば、無線通信に関する構成や機能）が制限された、所謂ローコスト端末として構成されていてもよい。端末装置３００は、各種センサ等の検知部を有していてもよく、当該検知部による検知結果に応じた各種状況や各種状態を示す情報を、無線通信を介して基地局２００に送信してもよい。具体的な一例として、端末装置３００は、各種センサ等のような検知部と組み合わせて利用されることで、水産業や農業等の分野へ適用され得る。このように、端末装置３００は、多様な用途に用いられ得る。 For example, the terminal device 300 is configured as a so-called low cost terminal in which various configurations and functions (for example, configurations and functions related to wireless communication) are limited as compared with a terminal device such as a smartphone that can be applied in IoT. It is also good. The terminal device 300 may have a detection unit such as various sensors, and transmits information indicating various situations and various states according to the detection result by the detection unit to the base station 200 via wireless communication. It is also good. As a specific example, the terminal device 300 can be applied to fields such as fisheries industry and agriculture by being used in combination with detection units such as various sensors. Thus, the terminal device 300 can be used for various applications.
　また、端末装置３００は、移動可能に構成されていてもよい。この場合には、例えば、端末装置３００は、ＧＰＳ（Global　Positioning　System）等のような所謂ＧＮＳＳ（Global　Navigation　Satellite　System）の技術に基づき、自身の位置を示す位置情報を取得し、無線通信を介して当該位置情報を基地局２００に送信してもよい。この場合には、端末装置３００は、例えば、ＧＰＳ衛星５００から送信される無線信号に基づく衛星測位により、自身の位置情報を取得すればよい。なお、端末装置３００が、例えば、電力メータやガスメータ等のような移動を伴わない装置（即ち、固定的に設置される装置）として構成されている場合には、上述した位置情報の取得に係る機能を備えていなくてもよい。 Moreover, the terminal device 300 may be configured to be movable. In this case, for example, the terminal device 300 acquires position information indicating its position based on the technology of so-called GNSS (Global Navigation Satellite System) such as GPS (Global Positioning System) or the like, and performs wireless communication. The position information may be transmitted to the base station 200. In this case, the terminal device 300 may obtain its own position information by satellite positioning based on a radio signal transmitted from the GPS satellite 500, for example. In the case where the terminal device 300 is configured as a device that does not involve movement (for example, a device fixedly installed) such as a power meter or a gas meter, for example, the terminal device 300 relates to acquisition of the above-described position information. It is not necessary to have the function.
　また、端末装置３００が移動可能に構成されている場合には、当該端末装置３００は、バッテリーからの電力供給に基づき動作するような状況が想定され得る。そのため、端末装置３００は、当該バッテリーの状態（例えば、バッテリーの電力の残量）に関する情報を取得し、当該情報に応じて、無線通信を介した基地局２００との間の通信を制御してもよい。 Moreover, when the terminal device 300 is configured to be movable, a situation may be assumed where the terminal device 300 operates based on the power supply from the battery. Therefore, the terminal device 300 acquires information on the state of the battery (for example, the remaining amount of power of the battery), and controls communication with the base station 200 via wireless communication according to the information. It is also good.
　なお、前述したように、端末装置３００は、ＬＰＷＡの技術に基づき、基地局２００との間で通信を行ってもよい。そのため、端末装置３００は、必ずしも基地局２００に常時接続されていなくてもよく、例えば、所定の期間ごとに基地局２００と接続されてもよい。特に、端末装置３００として移動可能に構成されたローコスト端末を適用するような状況下では、例えば、数年以上の長期間のバッテリー駆動も想定され得るため、スマートフォン等のような常時接続や高速通信を必要としない場合もある。 As described above, the terminal device 300 may communicate with the base station 200 based on the LPWA technology. Therefore, the terminal device 300 may not necessarily be always connected to the base station 200. For example, the terminal device 300 may be connected to the base station 200 at predetermined intervals. In particular, in a situation where a low-cost terminal configured to be movable as the terminal device 300 is applied, for example, battery driving for a long period of several years or more may be assumed, so that constant connection or high speed communication such as a smartphone etc. You may not need it.
　また、端末装置３００は、３ＧＰＰで規定されているＤＲＸ（Discontinuous　Reception）／ＤＴＸ（Discontinuous　Transmission）のように、基地局２００に対して送信対象となる情報を複数回にわたり繰り返し送信（換言すると、間欠送信）してもよい。この場合には、基地局２００は、端末装置３００から繰り返し送信される無線信号を重畳し、当該重畳に伴い信号レベルの増大した無線信号に対して復調処理を施すことで、当該端末装置３００から送信されたデータを復号してもよい。このような制御により、特に、端末装置３００がローコスト端末として構成される場合等のように、当該端末装置３００が送信可能な無線信号の信号レベルが制限されている場合においても、基地局２００は、当該無線信号を復調することが可能となる。 Also, the terminal device 300 repeatedly transmits information to be transmitted to the base station 200 a plurality of times (in other words, intermittent), such as DRX (Discontinuous Reception) / DTX (Discontinuous Transmission) specified in 3GPP. Sending). In this case, the base station 200 superimposes the radio signal repeatedly transmitted from the terminal device 300, and performs demodulation processing on the radio signal whose signal level has been increased along with the superposition, from the terminal device 300. The transmitted data may be decoded. Even when the signal level of the radio signal that can be transmitted by the terminal device 300 is limited, as in the case where the terminal device 300 is configured as a low-cost terminal, by such control, the base station 200 can The radio signal can be demodulated.
　なお、上述した端末装置３００の構成はあくまで一例であり、必ずしも端末装置３００の構成を限定するものではない。具体的な一例として、端末装置３００は、スマートフォン等のような端末装置（例えば、ＬＴＥ、ＬＴＥ－ＡにおけるＵＥ）として構成されていてもよい。 The configuration of the terminal device 300 described above is merely an example, and the configuration of the terminal device 300 is not necessarily limited. As a specific example, the terminal device 300 may be configured as a terminal device such as a smartphone (for example, LTE, UE in LTE-A).
　サーバ１００は、クライアント４００と所定のネットワークＮ２１を介して接続されている。なお、ネットワークＮ２１の種別は特に限定されない。具体的な一例として、当該ネットワークＮ２１は、Ｗｉ－Ｆｉ（登録商標）規格に基づくネットワークのような、所謂無線のネットワークにより構成されていてもよい。また、他の一例として、当該ネットワークＮ２１は、インターネット、専用線、ＬＡＮ（Local　Area　Network）、または、ＷＡＮ（Wide　Area　Network）等により構成されていてもよい。また、当該ネットワークＮ２１は、複数のネットワークを含んでもよく、少なくとも一部が有線のネットワークとして構成されていてもよい。また、前述のように、サーバ１００は、所定のネットワークを介して各基地局２００と接続されている。以上のような構成により、少なくとも一部の基地局２００は、サーバ１００を介して、クライアント４００で実行されたアプリケーション等と接続され得る。 The server 100 is connected to the client 400 via a predetermined network N21. The type of the network N21 is not particularly limited. As a specific example, the network N21 may be configured by a so-called wireless network such as a network based on the Wi-Fi (registered trademark) standard. Further, as another example, the network N21 may be configured by the Internet, a dedicated line, a LAN (Local Area Network), a WAN (Wide Area Network), or the like. Further, the network N21 may include a plurality of networks, and at least a part thereof may be configured as a wired network. Also, as described above, the server 100 is connected to each base station 200 via a predetermined network. With the above-described configuration, at least some of the base stations 200 can be connected to an application or the like executed by the client 400 via the server 100.
　なお、クライアント４００は、各種アプリケーションを実行する主体を模式的に示しており、その構成は特に限定されない。具体的な一例として、クライアント４００は、ネットワークＮ２１に接続されたＰＣ等のような情報処理装置として構成されていてもよい。また、クライアント４００は、例えば、スマートフォン等のような、無線のネットワークを介してサーバ１００にアクセス可能な無線通信端末として構成されていてもよい。なお、この場合には、クライアント４００は、基地局２００のセルＮ１１内に位置する端末装置であってもよく、ネットワークＮ２１に当該基地局２００と当該クライアント４００との間の無線の通信経路が含まれてもよい。 The client 400 schematically shows an entity that executes various applications, and the configuration thereof is not particularly limited. As a specific example, the client 400 may be configured as an information processing apparatus such as a PC connected to the network N21. Also, the client 400 may be configured as a wireless communication terminal accessible to the server 100 via a wireless network, such as a smart phone, for example. In this case, the client 400 may be a terminal device located in the cell N11 of the base station 200, and the network N21 includes a wireless communication path between the base station 200 and the client 400. It may be
　また、サーバ１００は、所定のネットワークＮ３１（例えば、ＷＡＮ、インターネット等）を介して、他の事業者が管理するサーバ６００（以降では、「ローミングサーバ６００」とも称する）との間で通信を行ってもよい。このような構成により、サーバ１００は、ローミングサーバ６００を介して、当該他の事業者が管理する基地局２００Ｃとの間で情報を送受信することも可能となる。即ち、サーバ１００は、基地局２００Ｃと、当該基地局２００ＣのセルＮ１１Ｃの内部に位置する端末装置３００と、の間の通信に応じた情報を、当該基地局２００Ｃからローミングサーバ６００を介して取得することも可能となる。 In addition, server 100 communicates with server 600 (hereinafter, also referred to as “roaming server 600”) managed by another operator via a predetermined network N31 (for example, WAN, Internet, etc.). May be With such a configuration, the server 100 can also transmit and receive information with the base station 200C managed by the other operator via the roaming server 600. That is, the server 100 acquires, from the base station 200C via the roaming server 600, information corresponding to communication between the base station 200C and the terminal device 300 located inside the cell N11C of the base station 200C. It will also be possible.
　また、本実施形態に係る通信システム１において、基地局２００及び端末装置３００は、ＧＰＳ衛星５００等の衛星から無線信号として送信される情報を、当該基地局２００と当該端末装置３００との間の通信に利用してもよい。具体的な一例として、基地局２００及び端末装置３００は、ＧＰＳ衛星５００から送信される時刻情報（クロックデータ）を基に、通信の同期を行ってもよい。このような構成により、基地局２００と端末装置３００との間で通信の同期が精度良く行われ、当該基地局２００と当該端末装置３００との間で送受信される信号強度をより向上させることが可能となり、ひいては、通信品質をより向上させることが可能となる。 Further, in the communication system 1 according to the present embodiment, the base station 200 and the terminal device 300 transmit information transmitted as a radio signal from a satellite such as the GPS satellite 500 to a position between the base station 200 and the terminal device 300. You may use for communication. As a specific example, the base station 200 and the terminal device 300 may perform communication synchronization based on time information (clock data) transmitted from the GPS satellite 500. With such a configuration, communication synchronization is accurately performed between the base station 200 and the terminal device 300, and the signal strength transmitted and received between the base station 200 and the terminal device 300 is further improved. As a result, communication quality can be further improved.
　以上、図１を参照して、本開示の一実施形態に係る通信システムのシステム構成の一例について説明した。 The example of the system configuration of the communication system according to an embodiment of the present disclosure has been described above with reference to FIG.
　　＜１．２．サーバの構成＞
　続いて、本開示の一実施形態に係る通信システム１を構成するサーバ１００の機能構成の一例について説明する。例えば、図２は、本開示の一実施形態に係る通信システムにおけるサーバ１００の機能構成の一例を示したブロック図である。 <1.2. Server configuration>
Then, an example of functional composition of server 100 which constitutes communication system 1 concerning one embodiment of this indication is explained. For example, FIG. 2 is a block diagram showing an example of a functional configuration of the server 100 in the communication system according to an embodiment of the present disclosure.
　図２に示すように、サーバ１００は、ネットワーク通信部１１０と、記憶部１３０と、処理部１５０とを含む。 As shown in FIG. 2, the server 100 includes a network communication unit 110, a storage unit 130, and a processing unit 150.
　ネットワーク通信部１１０は、他の装置との間で情報を送受信する。例えば、ネットワーク通信部１１０は、基地局２００に情報を送信し、基地局２００からの情報を受信する。また、ネットワーク通信部１１０は、所定のネットワーク（例えば、図１に示すネットワークＮ２１）を介してクライアント４００との間で情報を送受信してもよい。また、ネットワーク通信部１１０は、所定のネットワーク（例えば、図１に示すネットワークＮ３１）を介してローミングサーバ６００にアクセスしてもよい。これにより、ネットワーク通信部１１０は、例えば、他の事業者が管理する基地局２００との間で、当該ローミングサーバ６００を介して情報を送受信することが可能となる。 The network communication unit 110 exchanges information with other devices. For example, the network communication unit 110 transmits information to the base station 200 and receives information from the base station 200. The network communication unit 110 may also transmit and receive information to and from the client 400 via a predetermined network (for example, the network N21 shown in FIG. 1). Also, the network communication unit 110 may access the roaming server 600 via a predetermined network (for example, the network N31 shown in FIG. 1). As a result, the network communication unit 110 can transmit and receive information via the roaming server 600 with, for example, the base station 200 managed by another operator.
　記憶部１３０は、サーバ１００の動作のためのプログラム及び様々なデータを一時的に又は恒久的に記憶する。記憶部１３０には、例えば、端末装置３００から基地局２００に送信され当該基地局２００からサーバ１００に取得された各種情報（例えば、フレーム情報）、当該端末装置３００の登録情報、各基地局２００の位置情報、及びローミングサーバ６００へのアクセス情報等が記憶され得る。 The storage unit 130 temporarily or permanently stores programs for various operations of the server 100 and various data. In the storage unit 130, for example, various information (for example, frame information) transmitted from the terminal device 300 to the base station 200 and acquired from the base station 200 to the server 100, registration information of the terminal device 300, each base station 200. , Location information, and access information to the roaming server 600 may be stored.
　処理部１５０は、サーバ１００の様々な機能を提供する。処理部１５０は、通信制御部１５１と、情報取得部１５３と、判定部１５５と、通知部１５７とを含む。 The processing unit 150 provides various functions of the server 100. The processing unit 150 includes a communication control unit 151, an information acquisition unit 153, a determination unit 155, and a notification unit 157.
　通信制御部１５１は、基地局２００、クライアント４００、及びローミングサーバ６００等の他の装置との通信処理を行う。例えば、通信制御部１５１は、端末装置３００から複数の基地局２００に送信された情報（例えば、フレーム情報）を合成し、当該合成後の情報に復調処理を施すことで、当該端末装置３００から当該基地局２００に送信されたデータを復号してもよい。 The communication control unit 151 performs communication processing with another device such as the base station 200, the client 400, and the roaming server 600. For example, the communication control unit 151 combines information (for example, frame information) transmitted from the terminal device 300 to the plurality of base stations 200, and performs demodulation processing on the information after the combination, from the terminal device 300. The data transmitted to the base station 200 may be decoded.
　情報取得部１５３は、上記のような他の装置から各種情報を取得する。例えば、情報取得部１５３は、端末装置３００から基地局２００に通知された情報（例えば、フレーム情報）のうち少なくとも一部の情報を、当該基地局２００から取得してもよい。 The information acquisition unit 153 acquires various types of information from the other devices as described above. For example, the information acquisition unit 153 may acquire, from the base station 200, at least a part of the information (for example, frame information) notified from the terminal device 300 to the base station 200.
　判定部１５５は、各種判定に係る処理を実行する。例えば、判定部１５５は、端末装置３００から複数の基地局２００それぞれに送信された情報のうち少なくとも一部の情報（例えば、フレーム情報に含まれるペイロード等）を、当該複数の基地局２００のうちのいずれから取得するかを判定してもよい。 The determination unit 155 performs processing related to various determinations. For example, the determination unit 155 may set at least a part of information (for example, a payload included in frame information) among the information transmitted from the terminal device 300 to each of the plurality of base stations 200, among the plurality of base stations 200. It may be determined from which of the two.
　通知部１５７は、他の装置に対して各種情報を通知する。例えば、通知部１５７は、基地局２００から取得した情報を、クライアント４００に通知してもよい。 The notification unit 157 notifies other devices of various information. For example, the notification unit 157 may notify the client 400 of the information acquired from the base station 200.
　なお、処理部１５０は、上述した構成要素以外の他の構成要素をさらに含み得る。即ち、処理部１５０は、上述した構成要素の動作以外の動作も行い得る。 The processing unit 150 may further include other components in addition to the components described above. That is, the processing unit 150 can perform operations other than the operations of the components described above.
　また、図２に示すサーバ１００の機能構成はあくまで一例であり、必ずしもサーバ１００の構成を限定するものではない。例えば、サーバ１００は、用途や適用分野に応じて上述した構成要素以外の他の構成要素を含んでもよい。 Further, the functional configuration of the server 100 shown in FIG. 2 is merely an example, and the configuration of the server 100 is not necessarily limited. For example, the server 100 may include components other than the components described above depending on the application and application field.
　以上、図２を参照して、本開示の一実施形態に係る通信システム１を構成するサーバ１００の機能構成の一例について説明した。 In the above, with reference to FIG. 2, an example of the functional configuration of the server 100 that configures the communication system 1 according to an embodiment of the present disclosure has been described.
　　＜１．３．基地局の構成＞
　続いて、本開示の一実施形態に係る通信システム１を構成する基地局２００の機能構成の一例について説明する。例えば、図３は、本開示の一実施形態に係る通信システムにおける基地局２００の機能構成の一例を示したブロック図である。 <1.3. Base station configuration>
Then, an example of functional composition of base station 200 which constitutes communication system 1 concerning one embodiment of this indication is explained. For example, FIG. 3 is a block diagram showing an example of a functional configuration of the base station 200 in the communication system according to an embodiment of the present disclosure.
　図３に示すように、基地局２００は、アンテナ部２１０と、無線通信部２２０と、ネットワーク通信部２３０と、記憶部２６０と、処理部２７０とを含む。また、基地局２００は、アンテナ部２４０と、衛星信号受信部２５０とを含んでもよい。 As shown in FIG. 3, the base station 200 includes an antenna unit 210, a wireless communication unit 220, a network communication unit 230, a storage unit 260, and a processing unit 270. Also, the base station 200 may include an antenna unit 240 and a satellite signal reception unit 250.
　アンテナ部２１０は、無線通信部２２０により出力される信号を電波として空間に放射する。また、アンテナ部２１０は、空間の電波を信号に変換し、当該信号を無線通信部２２０へ出力する。 The antenna unit 210 radiates the signal output from the wireless communication unit 220 into space as a radio wave. Also, the antenna unit 210 converts radio waves in space into signals, and outputs the signals to the wireless communication unit 220.
　無線通信部２２０は、信号を送受信する。例えば、無線通信部２２０は、端末装置３００へのダウンリンク信号を送信してもよく、端末装置３００からのアップリンク信号を受信してもよい。 The wireless communication unit 220 transmits and receives signals. For example, the wireless communication unit 220 may transmit a downlink signal to the terminal device 300 or may receive an uplink signal from the terminal device 300.
　ネットワーク通信部２３０は、情報を送受信する。例えば、ネットワーク通信部２３０は、他のノードへの情報を送信し、他のノードからの情報を受信する。例えば、上記他のノードは、他の基地局２００を含んでもよく、コアネットワークノード（例えば、前述したサーバ１００）を含んでもよい。 The network communication unit 230 transmits and receives information. For example, the network communication unit 230 transmits information to other nodes and receives information from other nodes. For example, the other node may include another base station 200, and may include a core network node (e.g., the server 100 described above).
　記憶部２６０は、基地局２００の動作のためのプログラム及び様々なデータを一時的に又は恒久的に記憶する。記憶部２６０には、例えば、端末装置３００から送信される各種情報（例えば、フレーム情報）、当該情報の受信時刻、受信信号の信号強度、及び無線通信に使用される帯域の情報等が記憶され得る。 The storage unit 260 temporarily or permanently stores programs for various operations of the base station 200 and various data. The storage unit 260 stores, for example, various information (for example, frame information) transmitted from the terminal device 300, the reception time of the information, the signal strength of the reception signal, and information of the band used for wireless communication. obtain.
　アンテナ部２４０は、ＧＰＳ衛星５００等の衛星から送信される電波（即ち、無線信号）を信号に変換し、当該信号を衛星信号受信部２５０へ出力する。 The antenna unit 240 converts radio waves (that is, wireless signals) transmitted from satellites such as the GPS satellite 500 into signals, and outputs the signals to the satellite signal receiving unit 250.
　衛星信号受信部２５０は、ＧＰＳ衛星５００から送信される信号を受信する。このようにして受信された信号は、例えば、前述した端末装置３００との間の通信の同期等に利用される。 The satellite signal reception unit 250 receives a signal transmitted from the GPS satellite 500. The signal received in this manner is used, for example, for synchronization of communication with the terminal device 300 described above.
　処理部２７０は、基地局２００の様々な機能を提供する。処理部２７０は、通信制御部２７１と、情報取得部２７３と、通知部２７５とを含む。 The processing unit 270 provides various functions of the base station 200. The processing unit 270 includes a communication control unit 271, an information acquisition unit 273, and a notification unit 275.
　通信制御部２７１は、端末装置３００との無線通信を介した通信処理を行う。このとき、通信制御部２７１は、衛星信号受信部２５０によるＧＰＳ衛星５００からの信号に受信結果に応じて、当該ＧＰＳ衛星５００から送信された情報を復号してもよい。これにより、通信制御部２７１は、例えば、複合された当該情報（例えば、時刻情報）を端末装置３００との間の通信の同期に利用することも可能である。 The communication control unit 271 performs communication processing via wireless communication with the terminal device 300. At this time, the communication control unit 271 may decode the information transmitted from the GPS satellite 500 according to the reception result of the signal from the GPS satellite 500 by the satellite signal reception unit 250. Thereby, the communication control unit 271 can also use, for example, the combined information (for example, time information) for synchronization of communication with the terminal device 300.
　情報取得部２７３は、各種情報を取得する。例えば、情報取得部２７３は、端末装置３００との間の通信に基づき、当該端末装置３００から所望の情報（例えば、フレーム情報）を取得してもよい。 The information acquisition unit 273 acquires various types of information. For example, the information acquisition unit 273 may acquire desired information (for example, frame information) from the terminal device 300 based on communication with the terminal device 300.
　通知部２７５は、サーバ１００及び端末装置３００のような他の装置に対して各種情報を通知する。例えば、通知部２７５は、端末装置３００から取得した情報（例えば、フレーム情報）のうち少なくとも一部の情報を、サーバ１００に通知してもよい。 The notification unit 275 notifies various information to other devices such as the server 100 and the terminal device 300. For example, the notification unit 275 may notify the server 100 of at least part of information (for example, frame information) acquired from the terminal device 300.
　なお、処理部２７０は、上述した構成要素以外の他の構成要素をさらに含み得る。即ち、処理部２７０は、上述した構成要素の動作以外の動作も行い得る。 The processing unit 270 may further include other components in addition to the components described above. That is, the processing unit 270 can also perform operations other than the operations of the components described above.
　また、図３に示す基地局２００の機能構成はあくまで一例であり、必ずしも基地局２００の構成を限定するものではない。例えば、基地局２００は、用途や適用分野に応じて上述した構成要素以外の他の構成要素を含んでもよい。 The functional configuration of the base station 200 shown in FIG. 3 is merely an example, and the configuration of the base station 200 is not necessarily limited. For example, base station 200 may include other components in addition to the components described above depending on the application and application field.
　以上、図３を参照して、本開示の一実施形態に係る通信システム１を構成する基地局２００の機能構成の一例について説明した。 In the above, with reference to FIG. 3, an example of the functional configuration of the base station 200 that configures the communication system 1 according to an embodiment of the present disclosure has been described.
　　＜１．４．端末装置の構成＞
　続いて、本開示の一実施形態に係る通信システム１を構成する端末装置３００の機能構成の一例について説明する。例えば、図４は、本開示の一実施形態に係る通信システムにおける端末装置３００の機能構成の一例を示したブロック図である。 <1.4. Terminal Configuration>
Then, an example of functional composition of terminal unit 300 which constitutes communication system 1 concerning one embodiment of this indication is explained. For example, FIG. 4 is a block diagram showing an example of a functional configuration of the terminal device 300 in the communication system according to an embodiment of the present disclosure.
　図３に示すように、端末装置３００は、アンテナ部３１０と、無線通信部３２０と、記憶部３６０と、処理部３７０とを含む。また、端末装置３００は、アンテナ部３４０と、衛星信号受信部３５０とを含んでもよい。 As shown in FIG. 3, the terminal device 300 includes an antenna unit 310, a wireless communication unit 320, a storage unit 360, and a processing unit 370. In addition, the terminal device 300 may include an antenna unit 340 and a satellite signal reception unit 350.
　アンテナ部３１０は、無線通信部３２０により出力される信号を電波として空間に放射する。また、アンテナ部３１０は、空間の電波を信号に変換し、当該信号を無線通信部３２０へ出力する。 The antenna unit 310 radiates the signal output from the wireless communication unit 320 into space as a radio wave. Also, the antenna unit 310 converts radio waves in space into signals, and outputs the signals to the wireless communication unit 320.
　無線通信部３２０は、信号を送受信する。例えば、無線通信部３２０は、基地局へアップリンク信号を送信してもよい。また、無線通信部３２０は、基地局からのダウンリンク信号を受信してもよい。なお、端末装置３００がローコスト端末として構成されている場合には、無線通信部３２０は、上記送信処理と上記受信処理とのうちいずれかのみが実行可能に構成されていてもよい。 The wireless communication unit 320 transmits and receives signals. For example, the wireless communication unit 320 may transmit an uplink signal to the base station. Also, the wireless communication unit 320 may receive the downlink signal from the base station. When the terminal device 300 is configured as a low cost terminal, the wireless communication unit 320 may be configured to be able to execute either the transmission process or the reception process.
　記憶部３６０は、端末装置３００の動作のためのプログラム及び様々なデータを一時的に又は恒久的に記憶する。記憶部３６０には、例えば、ノード（端末装置３００）の識別情報、及び処理部２７０により取得された各種情報（例えば、、端末装置３００の位置情報）等が記憶され得る。 The storage unit 360 temporarily or permanently stores programs for the operation of the terminal device 300 and various data. The storage unit 360 may store, for example, identification information of a node (the terminal device 300), various information (for example, position information of the terminal device 300) acquired by the processing unit 270, and the like.
　アンテナ部３４０は、ＧＰＳ衛星５００等の衛星から送信される電波（即ち、無線信号）を信号に変換し、当該信号を衛星信号受信部３５０へ出力する。 The antenna unit 340 converts radio waves (that is, radio signals) transmitted from satellites such as the GPS satellite 500 into signals, and outputs the signals to the satellite signal receiving unit 350.
　衛星信号受信部３５０は、ＧＰＳ衛星５００から送信される信号を受信する。このようにして受信された信号は、例えば、前述した基地局２００との間の通信の同期や、端末装置３００の位置情報の取得（換言すると、端末装置３００の位置の推定）等に利用される。 The satellite signal reception unit 350 receives a signal transmitted from the GPS satellite 500. The signal thus received is used, for example, for synchronization of communication with the base station 200 described above, acquisition of position information of the terminal device 300 (in other words, estimation of the position of the terminal device 300), etc. Ru.
　処理部３７０は、端末装置３００の様々な機能を提供する。処理部３７０は、通信制御部３７１と、情報取得部３７３と、判定部３７５と、通知部３７７とを含む。 The processing unit 370 provides various functions of the terminal device 300. The processing unit 370 includes a communication control unit 371, an information acquisition unit 373, a determination unit 375, and a notification unit 377.
　通信制御部３７１は、基地局２００との無線通信を介した通信処理を行う。このとき、通信制御部３７１は、衛星信号受信部３５０によるＧＰＳ衛星５００からの信号に受信結果に応じて、当該ＧＰＳ衛星５００から送信された情報を復号してもよい。これにより、通信制御部３７１は、例えば、複合された当該情報（例えば、時刻情報）を基地局２００との間の通信の同期に利用することも可能である。また、通信制御部３７１は、後述する判定部３７５による判定結果に応じて、基地局２００との無線通信を介した通信処理を制御してもよい。 The communication control unit 371 performs communication processing via wireless communication with the base station 200. At this time, the communication control unit 371 may decode the information transmitted from the GPS satellite 500 according to the reception result of the signal from the GPS satellite 500 by the satellite signal reception unit 350. Thereby, the communication control unit 371 can also use, for example, the combined information (for example, time information) for synchronization of communication with the base station 200. Further, the communication control unit 371 may control the communication processing via the wireless communication with the base station 200 according to the determination result by the determination unit 375 described later.
　情報取得部３７３は、各種情報を取得する。例えば、情報取得部３７３は、ＧＰＳ衛星５００から送信された情報の復号結果に応じて、端末装置３００の位置情報を取得してもよい。また、情報取得部３７３は、近接センサ、温度センサ、加速度センサ、ジャイロセンサ等の検知部（図示を省略する）から、検知結果に応じた各種情報を取得してもよい。このようにして上述のような検知部から取得された情報により、例えば、端末装置３００の周囲の環境の状態や当該端末装置３００自体の状態等のような各種状態や各種状況に関する情報を推定または取得することが可能となる。 The information acquisition unit 373 acquires various types of information. For example, the information acquisition unit 373 may acquire the position information of the terminal device 300 according to the decoding result of the information transmitted from the GPS satellite 500. The information acquisition unit 373 may acquire various information according to the detection result from a detection unit (not shown) such as a proximity sensor, a temperature sensor, an acceleration sensor, or a gyro sensor. Thus, for example, information on various states and various situations such as the state of the environment around the terminal device 300 and the state of the terminal device 300 itself is estimated or It becomes possible to acquire.
　判定部３７５は、各種判定に係る処理を実行する。例えば、判定部３７５は、情報取得部３７３により取得された情報に基づき各種状態や各種状況を推定し、推定結果に応じて基地局２００との間の通信に関する判定を行ってもよい。より具体的な一例として、判定部３７５は、自身のバッテリーの電力残量に応じて、基地局２００に対する繰り返し送信（即ち、間欠送信）に関する判定を行ってもよい。これにより、例えば、前述した通信制御部３７１は、バッテリーの電力の残量が閾値未満の場合に、繰り返し送信の回数を低減することで電力消費を抑制することも可能となる。 The determination unit 375 executes processing relating to various determinations. For example, the determination unit 375 may estimate various states and various situations based on the information acquired by the information acquisition unit 373 and perform determination regarding communication with the base station 200 according to the estimation result. As a more specific example, the determination unit 375 may make a determination regarding repetitive transmission (that is, intermittent transmission) to the base station 200 according to the remaining amount of power of its own battery. Thereby, for example, when the remaining amount of power of the battery is less than the threshold, the communication control unit 371 described above can also suppress power consumption by reducing the number of repeated transmissions.
　通知部３７７は、基地局２００のような他の装置に対して各種情報を通知する。例えば、通知部３７７は、情報取得部３７３により取得された各種情報（例えば、端末装置３００の位置情報等）を、基地局２００に通知してもよい。 The notification unit 377 notifies various types of information to other devices such as the base station 200. For example, the notification unit 377 may notify the base station 200 of various information (for example, position information of the terminal device 300 and the like) acquired by the information acquisition unit 373.
　なお、処理部３７０は、上述した構成要素以外の他の構成要素をさらに含み得る。即ち、処理部３７０は、上述した構成要素の動作以外の動作も行い得る。 Processing unit 370 may further include other components in addition to the components described above. That is, the processing unit 370 can also perform operations other than the operations of the components described above.
　また、図４に示す端末装置３００の機能構成はあくまで一例であり、必ずしも端末装置３００の構成を限定するものではない。例えば、端末装置３００は、用途や適用分野に応じて上述した構成要素以外の他の構成要素を含んでもよい。具体的な一例として、端末装置３００は、Bluetooth（登録商標）やＷｉ－Ｆｉ（登録商標）のような近距離通信モジュール、ＮＦＣ（Near　Field　Communication）のような近接通信モジュール、及び前述した各種センサ等を含んでもよい。 Further, the functional configuration of the terminal device 300 shown in FIG. 4 is merely an example, and the configuration of the terminal device 300 is not necessarily limited. For example, the terminal device 300 may include other components in addition to the components described above depending on the application and application field. As a specific example, the terminal device 300 includes a near field communication module such as Bluetooth (registered trademark) or Wi-Fi (registered trademark), a proximity communication module such as NFC (Near Field Communication), and the various sensors described above Etc. may be included.
　以上、図４を参照して、本開示の一実施形態に係る通信システム１を構成する端末装置３００の機能構成の一例について説明した。 In the above, with reference to FIG. 4, an example of the functional configuration of the terminal device 300 that configures the communication system 1 according to an embodiment of the present disclosure has been described.
　＜＜２．第１の実施形態＞＞
　続いて、本開示の第１の実施形態について説明する。 << 2. First embodiment >>
Subsequently, a first embodiment of the present disclosure will be described.
　　＜２．１．技術的課題＞
　まず、第１の実施形態に係る通信システムの技術的課題について説明する。 <2.1. Technical issues>
First, technical problems of the communication system according to the first embodiment will be described.
　前述したように、本開示の一実施形態に係る通信システム１において、端末装置３００が移動可能に構成されていてもよい。この場合には、当該端末装置３００は、例えば、ＧＰＳ衛星５００から送信される無線信号に基づく衛星測位により、自身の位置情報を取得することも可能である。一方で、端末装置３００が屋内や地下に位置する場合には、当該端末装置３００が、上記衛星測位により、自身の位置情報を取得することが困難な場合がある。 As described above, in the communication system 1 according to an embodiment of the present disclosure, the terminal device 300 may be configured to be movable. In this case, the terminal device 300 can also acquire its own position information by satellite positioning based on a radio signal transmitted from the GPS satellite 500, for example. On the other hand, when the terminal device 300 is located indoors or underground, it may be difficult for the terminal device 300 to acquire position information of itself by the satellite positioning.
　このような状況から、上記衛星測位により位置情報の取得が困難な場合においても、端末装置３００の位置情報を取得可能とする技術が各種検討されている。具体的な一例として、特開２０１６－１８４８６１号公報には、３つの基地局のそれぞれと端末装置（無線通信端末）との間の通信結果に応じた情報（例えば、フレームのずれや受信タイミング等）を利用することで、３つの基地局と端末装置との間の位置関係に基づき測位を行う（即ち、当該無線通信端末の位置を推定する）技術が開示されている。一方で、端末装置の移動するような状況下では、３つの基地局のそれぞれと端末装置との間の通信におけるフレームのずれや受信タイミングのみでは、当該端末装置の当該移動に係る状態を把握することが困難な場合がある。 From such a situation, various techniques for enabling acquisition of the position information of the terminal device 300 have been studied even when it is difficult to acquire the position information by the satellite positioning. As a specific example, Japanese Patent Laid-Open No. 2016-184861 discloses information (for example, frame deviation, reception timing, etc.) according to the result of communication between each of three base stations and a terminal apparatus (wireless communication terminal). There is disclosed a technique of performing positioning (that is, estimating the position of the wireless communication terminal) based on the positional relationship between three base stations and the terminal device by using. On the other hand, under the situation where the terminal device moves, the state concerning the movement of the terminal device is grasped only by the frame shift and the reception timing in the communication between each of the three base stations and the terminal device. It can be difficult.
　これに対して、複数の基地局のそれぞれが、端末装置から取得されたフレーム情報をサーバに送信し、サーバ側で当該フレーム情報を解析することで、当該端末装置の位置や、当該端末装置の移動に係る状態を推定する方法も挙げられる。しかしながら、この方法では、複数の基地局のそれぞれとサーバとの間のデータ通信に関するトラフィックが増大する傾向にあり、通信回線への負荷が増大する可能性がある。 On the other hand, each of the plurality of base stations transmits the frame information acquired from the terminal device to the server, and the server side analyzes the frame information to obtain the position of the terminal device or the terminal device. There is also a method of estimating a state involved in movement. However, with this method, traffic for data communication between each of the plurality of base stations and the server tends to increase, and the load on the communication line may increase.
　また、上述のようなトラフィックの増大は、端末装置の位置を推定する場合のみには限られない。即ち、複数の基地局のそれぞれと端末装置との間の通信に応じた情報が、当該複数の基地局のそれぞれからサーバに送信されるような状況下では、同様に、当該複数の基地局のそれぞれと当該サーバとの間のデータ通信に関するトラフィックが増大する可能性がある。 Also, the increase in traffic as described above is not limited to the case of estimating the position of the terminal device. That is, under the situation where information corresponding to communication between each of the plurality of base stations and the terminal device is transmitted from each of the plurality of base stations to the server, the information of the plurality of base stations is similarly There may be increased traffic for data communication between each and the server.
　このような状況を鑑み、本実施形態では、端末装置と基地局との間の通信に応じて、当該基地局とサーバとの間で通信が行われるような状況下において、トラフィックの増大を抑制し、システム全体の運用効率をより向上させることが可能な技術について提案する。 In view of such a situation, in the present embodiment, an increase in traffic is suppressed in a situation where communication is performed between the base station and the server according to the communication between the terminal device and the base station. And propose a technology that can further improve the operation efficiency of the entire system.
　　＜２．２．技術的特徴＞
　以下に、本実施形態に係る通信システムの技術的特徴について説明する。 <2.2. Technical features>
Hereinafter, technical features of the communication system according to the present embodiment will be described.
　　＜２．２．１．システム構成＞
　まず、本実施形態に係る通信システムのシステム構成の一例について説明する。例えば、図５は、本実施形態に係る通信システムのシステム構成の一例について説明するための説明図である。なお、以降では、便宜上、本実施形態に係る通信システムを、図１を参照して説明した通信システム１と明示的に区別する場合に「通信システム１Ａ」と称する場合がある。また、本説明では、端末装置３００が、ＧＰＳ衛星５００から送信される無線信号に基づく衛星測位により、自身の位置情報を取得することが困難な状況下において、当該端末装置３００の位置を推定する場合に着目して説明する。即ち、図５に示す、本実施形態に係る通信システム１Ａのシステム構成は、図１を参照して説明した通信システム１のシステム構成と、ＧＰＳ衛星５００が含まれていない点で異なり、その他の構成については同様である。そのため、本実施形態では、図１を参照して説明した例と異なる部分に着目して説明し、図１を参照して説明した例と実質的に同様の部分については詳細な説明は省略する。 <2.2.1. System configuration>
First, an example of a system configuration of the communication system according to the present embodiment will be described. For example, FIG. 5 is an explanatory diagram for describing an example of a system configuration of the communication system according to the present embodiment. Hereinafter, for the sake of convenience, the communication system according to the present embodiment may be referred to as “communication system 1A” when it is explicitly distinguished from the communication system 1 described with reference to FIG. Further, in the present description, the terminal device 300 estimates the position of the terminal device 300 under the situation where it is difficult to obtain its own position information by satellite positioning based on the wireless signal transmitted from the GPS satellite 500. The case will be described focusing on the case. That is, the system configuration of the communication system 1A according to the present embodiment shown in FIG. 5 is different from that of the communication system 1 described with reference to FIG. 1 in that the GPS satellite 500 is not included. The configuration is similar. Therefore, in the present embodiment, description will be given focusing on parts different from the example described with reference to FIG. 1, and detailed description will be omitted for parts substantially similar to the example described with reference to FIG. .
　図５に示す例では、サーバ１００は、複数の基地局２００のそれぞれと端末装置３００との間の通信に応じた情報を、当該基地局２００から取得し、取得した当該情報を解析することで端末装置３００の位置を推定する。例えば、サーバ１００は、ネットワークＮ２１を介したクライアント４００からの依頼に応じて、端末装置３００の位置を推定し、当該位置の推定結果を当該クライアント４００にフィードバックしてもよい。 In the example illustrated in FIG. 5, the server 100 acquires, from the base station 200, information according to communication between each of the plurality of base stations 200 and the terminal device 300, and analyzes the acquired information. The position of the terminal device 300 is estimated. For example, in response to a request from the client 400 via the network N21, the server 100 may estimate the position of the terminal device 300 and feed back the estimation result of the position to the client 400.
　なお、本実施形態においては、サーバ１００が、複数の基地局２００のそれぞれと端末装置３００との間の通信に応じた情報に基づき当該端末装置３００の位置を推定することが可能であれば、その手法は特に限定されない。例えば、サーバ１００は、端末装置３００から３以上の基地局２００のそれぞれとの間の通信に応じたフレームのずれや受信タイミング等を利用して、所謂３点測量の技術に基づき、既知である各基地局２００の位置から当該端末装置３００の位置を推定してもよい。 In the present embodiment, if the server 100 can estimate the position of the terminal device 300 based on the information corresponding to the communication between each of the plurality of base stations 200 and the terminal device 300, The method is not particularly limited. For example, the server 100 is known based on a so-called three-point survey technique using a shift in a frame, a reception timing, and the like according to communication between the terminal device 300 and each of the three or more base stations 200. The position of the terminal device 300 may be estimated from the position of each base station 200.
　また、サーバ１００は、ローミングサーバ６００を介して他の事業者が管理する基地局２００からも情報を取得することで、当該情報を、端末装置３００の位置の推定に利用してもよい。具体的な一例として、サーバ１００は、端末装置３００の位置の推定のために情報を取得可能な基地局２００の数が閾値未満の場合に、ローミングサーバ６００を介して他の事業者が管理する基地局２００から当該情報を追加で取得してもよい。 Also, the server 100 may use the information to estimate the position of the terminal device 300 by acquiring information from the base station 200 managed by another operator via the roaming server 600. As a specific example, the server 100 is managed by another operator via the roaming server 600 when the number of base stations 200 capable of acquiring information for estimating the position of the terminal device 300 is less than a threshold. The information may be additionally acquired from the base station 200.
　以上、図５を参照して、本実施形態に係る通信システムのシステム構成の一例について説明した。 The example of the system configuration of the communication system according to the present embodiment has been described above with reference to FIG.
　　＜２．２．２．フレーム構成＞
　続いて、本実施形態に係る通信システムにおいて、各基地局２００と端末装置３００との間で送受信されるデータ（即ち、フレーム情報）の概略的なフレーム構成の一例について説明する。例えば、図６は、本実施形態に係る通信システムにおけるフレーム情報の概略的なフレーム構成の一例について説明するための説明図である。 2.2.2. Frame configuration>
Subsequently, in the communication system according to the present embodiment, an example of a schematic frame configuration of data (that is, frame information) transmitted and received between each base station 200 and the terminal device 300 will be described. For example, FIG. 6 is an explanatory diagram for describing an example of a schematic frame configuration of frame information in the communication system according to the present embodiment.
　図６に示すように、本実施形態に係る通信システムにおけるフレーム情報は、主に、プリアンブル（Preamble）や同期信号（Sync）等を含む制御情報と、ペイロード（Payload）と、ＣＲＣとを含む。制御情報には、上述の通り、プリアンブル（Preamble）や同期信号（Sync）等のような基地局２００と端末装置３００との間で同期を取るための信号等が含まれる。また、ペイロードには、端末装置３００の識別情報や、当該端末装置３００から基地局２００に送信されるデータの本体が含まれる。なお、当該データには、例えば、端末装置３００が各種センサから取得した情報等が含まれてもよい。また、当該データが暗号化され、フレーム情報に対して誤り訂正に必要な符号化ビットが付加される場合もある。ＣＲＣは、誤り検出を目的とした符号であり、送信されたデータにビット誤りがあるか否かの判定に使用される。 As shown in FIG. 6, frame information in the communication system according to the present embodiment mainly includes control information including a preamble, a synchronization signal (Sync), and the like, a payload, and a CRC. As described above, the control information includes a signal for achieving synchronization between the base station 200 and the terminal device 300, such as a preamble or a synchronization signal (Sync). Further, the payload includes identification information of the terminal device 300 and a main body of data transmitted from the terminal device 300 to the base station 200. The data may include, for example, information acquired by the terminal device 300 from various sensors. In addition, the data may be encrypted, and encoded bits necessary for error correction may be added to the frame information. The CRC is a code for the purpose of error detection, and is used to determine whether or not the transmitted data has a bit error.
　なお、本実施形態では、図６に示すようなフレーム情報のうち、ペイロードが含まれない部分の情報を、「ペイロード無し情報」として個別に扱う場合がある。例えば、ペイロード無し情報としては、上記制御情報（Preamble/Sync）のみが使用され得る。 In the present embodiment, there is a case where in the frame information as shown in FIG. 6, the information of the part not including the payload is treated individually as the "no payload information". For example, only the control information (Preamble / Sync) may be used as no-payload information.
　以上、図６を参照して、本実施形態に係る通信システムにおいて、各基地局２００と端末装置３００との間で送受信されるデータ（即ち、フレーム情報）の概略的なフレーム構成の一例について説明した。 As described above, with reference to FIG. 6, an example of a schematic frame configuration of data (that is, frame information) transmitted and received between each base station 200 and the terminal device 300 in the communication system according to the present embodiment will be described. did.
　　＜２．２．３．処理＞
　続いて、本実施形態に係る通信システムの処理シーケンスの一例について説明する。なお、本説明では、サーバ１００が、クライアント４００等で実行されたアプリケーションの依頼に応じて、各基地局２００から情報を取得し、当該情報に基づき端末装置３００の位置を推定する場合の処理の一例について説明する。なお、同処理については、サーバ１００が、端末装置３００から基地局２００に送信されたフレーム情報に含まれるペイロードを取得する前に当該端末装置３００の位置推定を行う場合と、当該ペイロードを取得した後に当該端末装置３００の位置推定を行う場合と、が想定され得る。そのため、以降では、「ペイロードの取得前に端末装置３００の位置推定が行われる場合」と、「ペイロードの取得後に端末装置３００の位置推定が行われる場合」と、に分けて、それぞれについて処理シーケンスの一例を説明する。 <2.2.3. Processing>
Subsequently, an example of a processing sequence of the communication system according to the present embodiment will be described. In the present embodiment, the server 100 acquires information from each base station 200 in response to a request for an application executed by the client 400 or the like, and estimates the position of the terminal device 300 based on the information. An example will be described. In the same process, the server 100 estimates the position of the terminal device 300 before acquiring the payload included in the frame information transmitted from the terminal device 300 to the base station 200, and the payload is acquired. It may be assumed that the position estimation of the terminal device 300 will be performed later. Therefore, hereinafter, the processing sequence is divided into “when position estimation of terminal device 300 is performed before acquisition of payload” and “when position estimation of terminal device 300 is performed after acquisition of payload”. An example will be described.
　　（１）ペイロードの取得前に端末装置３００の位置推定が行われる場合
　まず、サーバ１００が、端末装置３００から基地局２００に送信されたフレーム情報に含まれるペイロードを取得する前に、当該端末装置３００の位置推定を行う場合の処理の流れの一例について説明する。例えば、図７は、本実施形態に係る通信システム１Ａの一連の処理の流れの一例を示したシーケンス図である。 (1) When position estimation of the terminal device 300 is performed before acquisition of the payload First, before the server 100 acquires the payload included in the frame information transmitted from the terminal device 300 to the base station 200, the terminal device 300 An example of the flow of processing when position estimation of 300 is performed will be described. For example, FIG. 7 is a sequence diagram showing an example of the flow of a series of processes of the communication system 1A according to the present embodiment.
　まず、クライアント４００等において、ユーザからの要求に応じてアプリケーションが実行され、当該アプリケーションから所定のネットワークＮ２１を介してサーバ１００に対して、端末装置３００の位置情報の提示が要求される（Ｓ１０１）。なお、当該要求を行うための手段やインタフェースは特に限定されない。例えば、Ｗｅｂブラウザを介したユーザ入力に応じて、クライアント４００からサーバ１００に当該要求が行われてもよい。また、スマートフォンやタブレット端末等にインストールされたアプリケーションが実行されることで、当該アプリケーションから（即ち、クライアント４００から）サーバ１００に当該要求が行われてもよい。 First, in the client 400 or the like, an application is executed in response to a request from the user, and the application requests the server 100 to present location information of the terminal device 300 via the predetermined network N21 (S101). . In addition, the means and interface for performing the said request | requirement are not specifically limited. For example, the request may be made from the client 400 to the server 100 in response to a user input via the web browser. In addition, the application installed on a smartphone, a tablet terminal, or the like may be executed, and the application may issue the request to the server 100 (that is, from the client 400).
　サーバ１００は、アプリケーションからの端末装置３００の位置情報の提示に係る要求を受け付けると、当該端末装置３００からの情報の受信履歴や、当該端末装置３００に関する登録情報に基づき、当該端末装置３００からの情報が受信される予定時刻を推定する（Ｓ１０３）。なお、各端末装置３００には、例えば、識別情報が関連付けられており、当該識別情報がサーバ１００とアプリケーションとの間で共有される等により、当該サーバ１００と当該アプリ―ションとが一方から指定された端末装置３００を認識可能であるものとする。 When the server 100 receives a request relating to the presentation of the position information of the terminal device 300 from the application, the server 100 receives the request from the terminal device 300 based on the reception history of the information from the terminal device 300 and the registration information related to the terminal device 300. An estimated time to receive information is estimated (S103). Identification information is associated with each terminal device 300, for example, and the identification information is shared between the server 100 and the application, whereby the server 100 and the application are designated from one side. It is assumed that the terminal device 300 can be recognized.
　また、端末装置３００は、所定の条件に応じて、近隣の基地局２００にフレーム情報を送信する（Ｓ１０５Ａ、Ｓ１０５Ｂ、及びＳ１０５Ｃ）。具体的な一例として、端末装置３００は、所定の期間ごとに近隣の基地局２００にフレーム情報を送信する。なお、本説明では、端末装置３００は、近隣の基地局２００Ａ、２００Ｂ、及び２００Ｃそれぞれにフレーム情報を送信するものとする。また、基地局２００Ａ及び２００Ｂは、サーバ１００を管理する事業者により管理された基地局であり、当該サーバ１００の管理下にあるものとする。これに対して、基地局２００Ｃは、基地局２００Ａ及び２００Ｂを管理する事業者とは異なる他の事業者が管理する基地局であり、ローミングサーバ６００の管理下にあるものとする。 In addition, the terminal device 300 transmits frame information to the neighboring base stations 200 according to a predetermined condition (S105A, S105B, and S105C). As a specific example, the terminal device 300 transmits frame information to the neighboring base stations 200 at predetermined intervals. In the present description, the terminal device 300 transmits frame information to each of the neighboring base stations 200A, 200B, and 200C. The base stations 200A and 200B are base stations managed by a carrier who manages the server 100, and are under the management of the server 100. On the other hand, base station 200C is a base station managed by another operator different from the one managing base stations 200A and 200B, and is under the management of roaming server 600.
　次いで、サーバ１００は、自身の管理下にある基地局２００Ａ及び２００Ｂに対して、ペイロード（Payload）無し情報の要求を行う（Ｓ１０７Ａ及びＳ１０７Ｂ）。当該要求を受けた基地局２００Ａ及び２００Ｂのそれぞれは、端末装置３００から受信したフレーム情報のうち、ペイロードが含まれない部分の情報（例えば、プリアンブル（Preamble）や同期信号（Sync）等を含む制御情報）を、ペイロード無し情報としてサーバ１００に送信する（Ｓ１０９Ａ及びＳ１０９Ｂ）。 Next, the server 100 requests payloadless information from the base stations 200A and 200B under its control (S107A and S107B). Each of the base stations 200A and 200B having received the request performs control including information of a portion not including the payload in the frame information received from the terminal device 300 (for example, control including a preamble, a synchronization signal (Sync), etc. Information) is transmitted to the server 100 as no payload information (S109A and S109B).
　また、サーバ１００は、端末装置３００の位置を推定するための情報（ペイロード無し情報）の取得元となる基地局２００の数が閾値未満の場合（例えば、３基未満の場合）には（Ｓ１１１）、ローミングサーバ６００に対して、ペイロード無し情報の要求を行う（Ｓ１１３）。当該要求を受けたローミングサーバ６００は、自身の管理下にある基地局２００Ｃに対して、ペイロード無し情報の要求を行う（Ｓ１１５）。当該要求を受けた基地局２００Ｃは、端末装置３００から受信したフレーム情報のうち、ペイロードが含まれない部分の情報を、ペイロード無し情報としてローミングサーバ６００に送信する（Ｓ１１７）。そして、ローミングサーバ６００は、基地局２００Ｃから送信されたペイロード無し情報を、サーバ１００に転送する（Ｓ１１９）。 In addition, when the number of base stations 200 serving as an acquisition source of information for estimating the position of the terminal device 300 (no-payload information) is less than the threshold (for example, less than three) (S111) And request of the information with no payload from the roaming server 600 (S113). The roaming server 600 that has received the request requests the no-payload information to the base station 200C under its control (S115). The base station 200C having received the request transmits information of a portion not including the payload in the frame information received from the terminal device 300 to the roaming server 600 as payloadless information (S117). Then, the roaming server 600 transfers the no payload information transmitted from the base station 200C to the server 100 (S119).
　サーバ１００は、各基地局２００（即ち、基地局２００Ａ～２００Ｃ）から送信されたペイロード無し情報に基づき、端末装置３００の位置の推定を行う（Ｓ１２１）。このとき、サーバ１００は、複数の基地局２００それぞれから取得したペイロード無し情報に含まれる各種情報、例えば、同期信号（Sync）、受信時刻等に関する情報や、当該複数の基地局２００それぞれの位置情報に基づき、端末装置３００の位置や移動状態を推定してもよい。具体的な一例として、サーバ１００は、ペイロード無し情報に含まれる同期信号の時間伸縮や位相変化等を解析することで、単に端末装置３００の位置を推定するのみに限らず、当該端末装置３００の移動状況（例えば、移動速度）を推定してもよい。 The server 100 estimates the position of the terminal device 300 based on the no-payload information transmitted from each of the base stations 200 (ie, the base stations 200A to 200C) (S121). At this time, the server 100 detects various information included in the no-payload information acquired from each of the plurality of base stations 200, for example, information related to the synchronization signal (Sync), reception time, etc. The position or movement state of the terminal device 300 may be estimated based on As a specific example, the server 100 is not limited to merely estimating the position of the terminal device 300 by analyzing time expansion and contraction, phase change, and the like of the synchronization signal included in the no-payload information. The movement situation (for example, movement speed) may be estimated.
　次いで、サーバ１００は、複数の基地局２００それぞれから取得したペイロード無し情報に基づき、端末装置３００から各基地局２００に送信されたフレーム情報に含まれるペイロードの取得元となる基地局２００を決定する。具体的な一例として、サーバ１００は、取得したペイロード無し情報に含まれる情報に基づき、複数の基地局２００のうち、端末装置３００からフレーム情報の受信に係る受信信号強度が最も高い基地局２００を、ペイロードの取得元となる基地局２００として決定してもよい。そして、サーバ１００は、ペイロードの取得元として決定した基地局２００に対して、当該ペイロードの送信を要求する（Ｓ１２３）。当該要求を受けた基地局２００は、従前に端末装置３００から受信したフレーム情報のうち、ペイロードに相当する部分をペイロード情報としてサーバ１００に送信する（Ｓ１２５）。サーバ１００は、受信したペイロード情報と、従前に受信したペイロード無し情報と、を基に、フレーム情報を再構成する。 Next, the server 100 determines the base station 200 that is the acquisition source of the payload included in the frame information transmitted from the terminal device 300 to each of the base stations 200 based on the no-payload information acquired from each of the plurality of base stations 200. . As a specific example, based on the information included in the acquired no-payload information, the server 100 selects the base station 200 having the highest received signal strength for receiving frame information from the terminal device 300 among the plurality of base stations 200. , And may be determined as the base station 200 from which the payload is obtained. Then, the server 100 requests the base station 200 determined as a payload acquisition source to transmit the payload (S123). The base station 200 that has received the request transmits a portion corresponding to the payload among the frame information received from the terminal device 300 to the server 100 as payload information (S125). The server 100 reconstructs frame information based on the received payload information and the non-payload received information.
　次いで、サーバ１００は、再構成したフレーム情報を復調及び復号し、当該復調及び当該復号の結果として得られる端末装置３００の識別情報を、自身が管理する登録情報と比較する。これにより、サーバ１００は、当該フレーム情報の送信元となる端末装置３００が、アプリケーションからの依頼に応じた位置推定の対象となる端末装置３００であることを確認する（Ｓ１２７）。 Next, the server 100 demodulates and decodes the reconstructed frame information, and compares the demodulation and the identification information of the terminal device 300 obtained as a result of the decoding with registered information managed by itself. Thus, the server 100 confirms that the terminal device 300 that is the transmission source of the frame information is the terminal device 300 that is the target of position estimation according to the request from the application (S127).
　そして、サーバ１００は、再構成したフレーム情報の送信元となる端末装置３００が、位置推定の対象となる端末装置３００であることを確認すると、従前に推定した当該端末装置３００の位置情報をアプリケーションに送信する（Ｓ１２９）。 Then, when the server 100 confirms that the terminal device 300 serving as a transmission source of the reconstructed frame information is the terminal device 300 targeted for position estimation, the server 100 applies the previously estimated position information of the terminal device 300 to the application. (S129).
　以上、図７を参照して、本実施形態に係る通信システムの一連の処理の流れの一例について説明した。 In the above, with reference to FIG. 7, an example of the flow of a series of processes of the communication system according to the present embodiment has been described.
　続いて、図８を参照して、図７に示す例におけるサーバ１００の一連の処理の流れの一例について説明する。図８は、本実施形態に係るサーバ１００の一連の処理の流れの一例について説明するためのフローチャートである。 Subsequently, an example of a flow of a series of processes of the server 100 in the example illustrated in FIG. 7 will be described with reference to FIG. FIG. 8 is a flowchart for describing an example of a flow of a series of processes of the server 100 according to the present embodiment.
　まず、サーバ１００は、アプリケーションからの端末装置３００の位置情報の提示に係る要求を受け付けると、当該端末装置３００からの情報の受信履歴や、当該端末装置３００に関する登録情報に基づき、当該端末装置３００からの情報が受信される予定時刻を推定する（Ｓ２０１）。そして、サーバ１００は、推定した受信予定時刻を経過するまで待機し（Ｓ２０３、ＮＯ）、受信予定時刻が経過したら（Ｓ２０３、ＹＥＳ）、自身の管理下にある基地局２００からペイロード（Payload）無し情報を収集する（Ｓ２０５）。 First, when the server 100 receives a request relating to presentation of position information of the terminal device 300 from an application, the terminal device 300 receives the request from the terminal device 300 based on the reception history of the information from the terminal device 300 and the registration information about the terminal device 300. The estimated time at which the information from is received is estimated (S201). Then, the server 100 waits until the estimated estimated reception time has passed (S203, NO), and when the estimated reception time has elapsed (S203, YES), there is no payload (Payload) from the base station 200 under its control. Information is collected (S205).
　なお、ペイロード無し情報の収集対象となる基地局２００の数が閾値未満の場合には（Ｓ２０７）、サーバ１００は、提携する他の事業者が運用するローミングサーバ６００にアクセスする（Ｓ２０９）。これにより、サーバ１００は、ローミングサーバ６００を介して、当該ローミングサーバ６００が管理する他の基地局２００からペイロード無し情報を収集する（Ｓ２０５）。 If the number of base stations 200 targeted for collection of no-payload information is less than the threshold (S207), the server 100 accesses the roaming server 600 operated by another partner (S209). Thereby, the server 100 collects payloadless information from the other base station 200 managed by the roaming server 600 via the roaming server 600 (S205).
　そして、サーバ１００は、閾値以上の数の基地局からペイロード無し情報を収集した場合には（Ｓ２０７、ＹＥＳ）、収集した当該ペイロード無し情報に基づき端末装置３００の位置の推定を行う。このとき、サーバ１００は、複数の基地局２００それぞれから取得したペイロード無し情報に含まれる各種情報、例えば、同期信号（Sync）、受信時刻等に関する情報や、当該複数の基地局２００それぞれの位置情報に基づき、端末装置３００の位置や移動状態を推定してもよい。また、サーバ１００は、ペイロード無し情報に基づき、端末装置３００から各基地局２００に送信されたフレーム情報に含まれるペイロードの取得元となる基地局２００を決定する。例えば、サーバ１００は、取得したペイロード無し情報に含まれる情報に基づき、複数の基地局２００のうち、端末装置３００からフレーム情報の受信に係る受信信号強度が最も高い基地局２００を、ペイロードの取得元となる基地局２００として決定してもよい（Ｓ２１１）。即ち、この場合には、ペイロード無し情報、または、当該ペイロード無し情報に含まれる上記情報が、ペイロードを取得する基地局２００を特定するための「所定の制御情報」の一例に相当する。 When the server 100 collects no-payload information from the number of base stations equal to or greater than the threshold (S207, YES), the server 100 estimates the position of the terminal device 300 based on the collected no-payload information. At this time, the server 100 detects various information included in the no-payload information acquired from each of the plurality of base stations 200, for example, information on synchronization signal (Sync), reception time, etc., and position information of each of the plurality of base stations 200. The position or movement state of the terminal device 300 may be estimated based on In addition, the server 100 determines the base station 200 which is the acquisition source of the payload included in the frame information transmitted from the terminal device 300 to each of the base stations 200 based on the no-payload information. For example, based on the information included in the acquired no-payload information, the server 100 acquires the payload of the base station 200 having the highest received signal strength related to the reception of frame information from the terminal device 300 among the plurality of base stations 200. You may determine as base station 200 which becomes origin (S211). That is, in this case, the non-payload information or the above information included in the non-payload information corresponds to an example of “predetermined control information” for specifying the base station 200 that acquires the payload.
　サーバ１００は、ペイロードの取得元として決定した基地局２００に対してペイロードの送信を要求し、応答として当該基地局２００からペイロード情報を取得する。サーバ１００は、基地局２００から受信したペイロード情報と、従前に受信したペイロード無し情報と、を基に、フレーム情報を再構成する。サーバ１００は、再構成したフレーム情報を復調及び復号し、当該復調及び当該復号の結果として得られる端末装置３００の識別情報を、自身が管理する登録情報と比較する。これにより、サーバ１００は、当該フレーム情報の送信元となる端末装置３００が、アプリケーションからの依頼に応じた位置推定の対象となる端末装置３００であることを確認する（Ｓ２１３）。 The server 100 requests the transmission of the payload to the base station 200 determined as the acquisition source of the payload, and acquires the payload information from the base station 200 as a response. The server 100 reconstructs frame information based on the payload information received from the base station 200 and the no-payload information previously received. The server 100 demodulates and decodes the reconstructed frame information, and compares the identification information of the terminal device 300 obtained as a result of the demodulation and the decoding with registration information managed by itself. Thus, the server 100 confirms that the terminal device 300 that is the transmission source of the frame information is the terminal device 300 that is the target of position estimation according to the request from the application (S213).
　そして、サーバ１００は、再構成したフレーム情報の送信元となる端末装置３００が、位置推定の対象となる端末装置３００であることを確認すると、従前に推定した当該端末装置３００の位置情報をアプリケーションに送信する。 Then, when the server 100 confirms that the terminal device 300 serving as a transmission source of the reconstructed frame information is the terminal device 300 targeted for position estimation, the server 100 applies the previously estimated position information of the terminal device 300 to the application. Send to
　以上、図８を参照して、図７に示す例におけるサーバ１００の一連の処理の流れの一例について説明した。 In the above, with reference to FIG. 8, an example of the flow of a series of processes of the server 100 in the example shown in FIG. 7 has been described.
　続いて、図９を参照して、図７に示す例における基地局２００の一連の処理の流れの一例について説明する。図９は、本実施形態に係る基地局２００の一連の処理の流れの一例について説明するためのフローチャートである。 Subsequently, an example of the flow of a series of processes of the base station 200 in the example illustrated in FIG. 7 will be described with reference to FIG. FIG. 9 is a flowchart for describing an example of a flow of a series of processes of the base station 200 according to the present embodiment.
　基地局２００は、通信端末３００からフレーム情報を受信すると、図９に示した処理を開始する。即ち、基地局２００は、まず通信端末３００からフレーム情報を受信する（Ｓ２５１）。 When the base station 200 receives frame information from the communication terminal 300, the base station 200 starts the process shown in FIG. That is, the base station 200 first receives frame information from the communication terminal 300 (S251).
　次いで、基地局２００は、サーバ１００からペイロード無し情報の要求の有無を判定する（Ｓ２５３）。ペイロード無し情報の要求には、当該情報の取得元となるフレーム情報の受信時刻や帯域情報等が用いられもよい。基地局２００は、サーバ１００からペイロード無し情報の要求を受信した場合には（Ｓ２５３、ＹＥＳ）、端末装置３００から受信したフレーム情報のうち、ペイロードが含まれない部分の情報を抽出することでペイロード無し情報を生成する（Ｓ２５５）。また、基地局２００は、生成したペイロード無し情報を、サーバ１００からの要求に対する応答として当該サーバ１００に送信する（Ｓ２５７）。 Next, the base station 200 determines the presence or absence of a request for no payload information from the server 100 (S253). For the request for no payload information, the reception time of the frame information that is the acquisition source of the information, bandwidth information, and the like may be used. When the base station 200 receives a request for no-payload information from the server 100 (S 253, YES), the base station 200 extracts the information of the portion not including the payload from the frame information received from the terminal device 300. No information is generated (S255). Also, the base station 200 transmits the generated no-payload information to the server 100 as a response to the request from the server 100 (S257).
　なお、基地局２００は、サーバ１００からペイロード無し情報の要求が無い場合には（Ｓ２５３、ＮＯ）、当該ペイロード無し情報の生成及び当該ペイロード無し情報の送信に係る処理については実行せずに、次の処理に遷移してもよい。 When there is no request for no payload information from the server 100 (S 253, NO), the base station 200 does not execute the processing relating to the generation of the no payload information and the transmission of the no payload information. It may transition to the process of
　次いで、基地局２００は、サーバ１００からペイロード情報の要求の有無を判定する（Ｓ２５９）。基地局２００は、サーバ１００からペイロード情報の要求を受信した場合には（Ｓ２５９、ＹＥＳ）、従前に端末装置３００から受信したフレーム情報のうち、ペイロードに相当する部分の情報を抽出することでペイロード情報を生成する（Ｓ２６１）。また、基地局２００は、生成したペイロード情報を、サーバ１００からの要求に対する応答として当該サーバ１００に送信する（Ｓ２６３）。 Next, the base station 200 determines the presence or absence of a request for payload information from the server 100 (S259). When the base station 200 receives a request for payload information from the server 100 (S 259, YES), the base station 200 extracts the information of the portion corresponding to the payload from the frame information previously received from the terminal device 300. Information is generated (S261). Also, the base station 200 transmits the generated payload information to the server 100 as a response to the request from the server 100 (S263).
　なお、基地局２００は、サーバ１００からペイロード情報の要求が無い場合には（Ｓ２５９、ＮＯ）、当該ペイロード情報の生成及び当該ペイロード情報の送信に係る処理については実行しなくてもよい。 When there is no request for payload information from the server 100 (S 259, NO), the base station 200 may not execute the processing relating to the generation of the payload information and the transmission of the payload information.
　以上、図９を参照して、図７に示す例における基地局２００の一連の処理の流れの一例について説明した。 The example of the flow of the series of processes of the base station 200 in the example illustrated in FIG. 7 has been described above with reference to FIG.
　　（２）ペイロードの取得後に端末装置３００の位置推定が行われる場合
　続いて、サーバ１００が、端末装置３００から基地局２００に送信されたフレーム情報に含まれるペイロードを取得した後に、当該端末装置３００の位置推定を行う場合の処理の流れの一例について説明する。例えば、図１０は、本実施形態に係る通信システム１Ａの一連の処理の流れの他の一例を示したシーケンス図である。 (2) In the case where position estimation of the terminal device 300 is performed after acquiring the payload Subsequently, after the server 100 acquires the payload included in the frame information transmitted from the terminal device 300 to the base station 200, the terminal device 300 is performed. An example of the flow of processing when performing position estimation of For example, FIG. 10 is a sequence diagram showing another example of the flow of the series of processes of the communication system 1A according to the present embodiment.
　まず、クライアント４００等において、ユーザからの要求に応じてアプリケーションが実行され、当該アプリケーションから所定のネットワークＮ２１を介してサーバ１００に対して、端末装置３００の位置情報の提示が要求される（Ｓ３０１）。また、サーバ１００は、アプリケーションからの端末装置３００の位置情報の提示に係る要求を受け付けると、当該端末装置３００からの情報の受信履歴や、当該端末装置３００に関する登録情報に基づき、当該端末装置３００からの情報が受信される予定時刻を推定する（Ｓ３０３）。なお、参照符号Ｓ３０１及びＳ３０３で示した処理については、図７を参照して説明した例（即ち、参照符号Ｓ１０１及びＳ１０３で示した処理）と同様のため詳細な説明は省略する。 First, in the client 400 or the like, an application is executed in response to a request from the user, and the application requests the server 100 to present location information of the terminal device 300 via the predetermined network N21 (S301). . Also, when the server 100 receives a request from the application for presenting the position information of the terminal device 300, the terminal device 300 receives the request from the terminal device 300 based on the reception history of the information from the terminal device 300 and the registration information on the terminal device 300. The estimated time at which the information from is received is estimated (S303). The processes indicated by reference numerals S301 and S303 are the same as the example described with reference to FIG. 7 (that is, the processes indicated by reference numerals S101 and S103), and thus detailed description will be omitted.
　また、端末装置３００は、所定の条件に応じて、近隣の基地局２００にフレーム情報を送信する（Ｓ３０５Ａ、Ｓ３０５Ｂ、及びＳ３０５Ｃ）。なお、同処理についても、図７を参照して説明した例（即ち、参照符号ＳＳ１０１Ａ、Ｓ１０５Ｂ、及びＳ１０５Ｃで示した処理）と同様である。なお、本説明では、図７に示す例と同様に、基地局２００Ａ及び２００Ｂは、当該サーバ１００の管理下にあり、基地局２００Ｃについては、ローミングサーバ６００の管理下にあるものとする。 In addition, the terminal device 300 transmits frame information to the neighboring base stations 200 according to a predetermined condition (S305A, S305B, and S305C). The same processing is also similar to the example described with reference to FIG. 7 (that is, the processing indicated by reference symbols SS101A, S105B, and S105C). In the present description, as in the example shown in FIG. 7, the base stations 200A and 200B are under the control of the server 100, and the base station 200C is under the control of the roaming server 600.
　次いで、サーバ１００は、自身の管理下にある基地局２００Ａ及び２００Ｂに対して、端末装置３００からのフレーム情報の受信に係る各種状態や状況を示す受信情報の送信を要求する（Ｓ３０７Ａ、Ｓ３０７Ｂ）。受信情報としては、例えば、受信信号の信号強度、受信時刻、受信帯域等の情報が挙げられる。当該要求を受けた基地局２００Ａ及び２００Ｂのそれぞれは、端末装置３００からのフレーム情報の受信状況に応じて、上記受信情報をサーバ１００に送信する（Ｓ３０９Ａ、Ｓ３０９Ｂ）。 Next, the server 100 requests the base stations 200A and 200B under control of itself to transmit reception information indicating various states and statuses related to reception of frame information from the terminal device 300 (S307A, S307B) . The received information may include, for example, information such as the signal strength of the received signal, the reception time, and the reception band. Each of the base stations 200A and 200B that has received the request transmits the reception information to the server 100 according to the reception status of the frame information from the terminal device 300 (S309A, S309B).
　また、サーバ１００は、受信情報の取得元となる基地局２００の数が閾値未満の場合（例えば、３局未満の場合）には（Ｓ３１１）、ローミングサーバ６００に対して、受信情報の要求を行う（Ｓ３１３）。当該要求を受けたローミングサーバ６００は、自身の管理下にある基地局２００Ｃに対して、受信情報の要求を行う（Ｓ３１５）。当該要求を受けた基地局２００Ｃは、端末装置３００からのフレーム情報の受信状況に応じて、受信情報をローミングサーバ６００に送信する（Ｓ３１７）。そして、ローミングサーバ６００は、基地局２００Ｃから送信された受信情報を、サーバ１００に転送する（Ｓ３１９）。 In addition, when the number of base stations 200 from which received information is obtained is less than the threshold (for example, less than 3 stations) (S311), the server 100 requests the roaming server 600 for received information. Perform (S313). The roaming server 600 receiving the request makes a request for reception information to the base station 200C under its control (S315). The base station 200C that has received the request transmits the reception information to the roaming server 600 according to the reception status of the frame information from the terminal device 300 (S317). Then, the roaming server 600 transfers the reception information transmitted from the base station 200C to the server 100 (S319).
　サーバ１００は、受信情報を取得した基地局２００の数が規定数に達すると、当該受信情報を取得した複数の基地局２００の中から、端末装置３００から送信されたフレーム情報の取得元となる基地局２００を特定する。具体的な一例として、サーバ１００は、複数の基地局２００の中から、端末装置３００から送信されたフレーム情報の受信に係る信号強度のより高い基地局２００を特定してもよい。即ち、この場合には、受信情報が、ペイロードを取得する基地局２００を特定するための「所定の制御情報」の一例に相当する。なお、本説明では、サーバ１００は、基地局２００Ａを特定したものとする。 When the number of base stations 200 acquiring reception information reaches a specified number, the server 100 becomes an acquisition source of frame information transmitted from the terminal device 300 among the plurality of base stations 200 acquiring the reception information. The base station 200 is identified. As a specific example, the server 100 may specify, from among the plurality of base stations 200, a base station 200 having a higher signal strength relating to the reception of the frame information transmitted from the terminal device 300. That is, in this case, the reception information corresponds to an example of “predetermined control information” for specifying the base station 200 that acquires the payload. In the present description, it is assumed that the server 100 specifies the base station 200A.
　サーバ１００は、特定した基地局２００Ａに対してフレーム情報の送信を要求する（Ｓ３２１Ａ）。当該要求を受けた基地局２００Ａは、従前に端末装置３００から受信したフレーム情報をサーバ１００に送信する（Ｓ３２３Ａ）。 The server 100 requests the identified base station 200A to transmit frame information (S321A). The base station 200A that has received the request transmits frame information received from the terminal device 300 to the server 100 (S323A).
　また、サーバ１００は、特定した基地局２００Ａ以外の他の基地局２００（即ち、基地局２００Ｂ及び２００Ｃ）には、ペイロード（Payload）無し情報の送信を要求する。例えば、サーバ１００は、自身の管理下にある基地局２００Ｂに対しては、ペイロード無し情報の送信を直接要求する（Ｓ３２１Ｂ）。当該要求を受けた基地局２００Ｂは、従前に端末装置３００から受信したフレーム情報のうち、ペイロードが含まれない部分の情報をペイロード無し情報としてサーバ１００に送信する（Ｓ３２３Ｂ）。また、サーバ１００は、自身の管理下にない基地局２００Ｃに対しては、ローミングサーバ６００を介してペイロード無し情報の送信を要求する（Ｓ３２５、Ｓ３２７）。当該要求を受けた基地局２００Ｃは、従前に端末装置３００から受信したフレーム情報のうち、ペイロードが含まれない部分の情報をペイロード無し情報として、ローミングサーバ６００を介してサーバ１００に送信する（Ｓ３２９、Ｓ３３１）。 Also, the server 100 requests transmission of no payload information to the other base stations 200 (that is, the base stations 200B and 200C) other than the specified base station 200A. For example, the server 100 directly requests transmission of no-payload information to the base station 200B under its control (S321B). The base station 200B, which has received the request, transmits information of a portion which does not include the payload among the frame information received from the terminal device 300 to the server 100 as payloadless information (S323B). Also, the server 100 requests the transmission of no-payload information via the roaming server 600 to the base station 200C that is not under its control (S325, S327). The base station 200C, which has received the request, transmits the information of the portion not including the payload among the frame information received from the terminal device 300 to the server 100 via the roaming server 600 as no payload information (S329). , S331).
　サーバ１００は、受信したフレーム情報とペイロード無し情報とに基づき、端末装置３００の位置の推定を行う（Ｓ３３３）。なお、端末装置３００の位置の推定方法については、図７を参照して説明した例（即ち、参照符号Ｓ１２１で示した処理）と同様である。 The server 100 estimates the position of the terminal device 300 based on the received frame information and information without payload (S333). In addition, about the estimation method of the position of the terminal device 300, it is the same as that of the example (namely, process shown with referential mark S121) demonstrated with reference to FIG.
　次いで、サーバ１００は、受信したフレーム情報を復調及び復号し、当該復調及び当該復号の結果として得られる端末装置３００の識別情報を、自身が管理する登録情報と比較する。これにより、サーバ１００は、当該フレーム情報の送信元となる端末装置３００が、アプリケーションからの依頼に応じた位置推定の対象となる端末装置３００であることを確認する（Ｓ３３５）。 Next, the server 100 demodulates and decodes the received frame information, and compares the demodulation and the identification information of the terminal device 300 obtained as a result of the decoding with registration information managed by itself. Thus, the server 100 confirms that the terminal device 300 that is the transmission source of the frame information is the terminal device 300 that is the target of position estimation according to the request from the application (S335).
　そして、サーバ１００は、再構成したフレーム情報の送信元となる端末装置３００が、位置推定の対象となる端末装置３００であることを確認すると、従前に推定した当該端末装置３００の位置情報をアプリケーションに送信する（Ｓ３３７）。 Then, when the server 100 confirms that the terminal device 300 serving as a transmission source of the reconstructed frame information is the terminal device 300 targeted for position estimation, the server 100 applies the previously estimated position information of the terminal device 300 to the application. (S337).
　以上、図１０を参照して、本実施形態に係る通信システム１Ａの一連の処理の流れの他の一例について説明した。 The other example of the flow of the series of processes of the communication system 1A according to the present embodiment has been described above with reference to FIG.
　続いて、図１１を参照して、図１０に示す例における基地局２００の一連の処理の流れの一例について説明する。図１１は、本実施形態に係る基地局２００の一連の処理の流れの他の一例について説明するためのフローチャートである。 Subsequently, an example of a flow of a series of processes of the base station 200 in the example illustrated in FIG. 10 will be described with reference to FIG. FIG. 11 is a flowchart for describing another example of the flow of the series of processes of the base station 200 according to the present embodiment.
　まず、サーバ１００は、アプリケーションからの端末装置３００の位置情報の提示に係る要求を受け付けると、当該端末装置３００からの情報の受信履歴や、当該端末装置３００に関する登録情報に基づき、当該端末装置３００からの情報が受信される予定時刻を推定する（Ｓ４０１）。そして、サーバ１００は、推定した受信予定時刻を経過するまで待機し（Ｓ４０３、ＮＯ）、受信予定時刻が経過したら（Ｓ４０３、ＹＥＳ）、自身の管理下にある基地局２００から、端末装置３００からのフレーム情報の受信に係る各種状態や状況を示す受信情報を収集する（Ｓ４０５）。 First, when the server 100 receives a request relating to the presentation of position information of the terminal device 300 from an application, the terminal device 300 receives the request from the terminal device 300 based on the reception history of the information from the terminal device 300 and the registration information related to the terminal device 300. The estimated time at which the information from is received is estimated (S401). Then, server 100 waits until the estimated estimated reception time has passed (S 403, NO), and when the estimated reception time has elapsed (S 403, YES), from base station 200 under its control to terminal device 300. The reception information indicating the various states and statuses related to the reception of the frame information is collected (S405).
　なお、受信情報の収集対象となる基地局２００の数が閾値未満の場合には（Ｓ４０７）、サーバ１００は、提携する他の事業者が運用するローミングサーバ６００にアクセスする（Ｓ４０９）。これにより、サーバ１００は、当該ローミングサーバ６００が管理する他の基地局２００から受信情報を収集する（Ｓ４０５）。 If the number of base stations 200 for which reception information is to be collected is less than the threshold (S407), the server 100 accesses the roaming server 600 operated by the other business partner to be affiliated (S409). Thereby, the server 100 collects the received information from the other base station 200 managed by the roaming server 600 (S405).
　そして、サーバ１００は、閾値以上の数の基地局から受信情報を収集した場合には（Ｓ４０７、ＹＥＳ）、当該受信情報を取得した複数の基地局２００の中から、端末装置３００から送信されたフレーム情報の取得元となる基地局２００を特定する。例えば、サーバ１００は、複数の基地局２００の中から、端末装置３００から送信されたフレーム情報の受信に係る信号強度のより高い基地局２００を特定してもよい。そして、サーバ１００は、特定した当該基地局２００から、端末装置３００から当該基地局２００に送信されたフレーム情報を取得する。また、サーバ１００は、特定した当該基地局２００以外の他の基地局２００からは、当該フレーム情報に基づくペイロード無し情報を取得する（Ｓ４１１）。 Then, when the server 100 collects reception information from a number of base stations equal to or greater than the threshold (S 407, YES), the server 100 is transmitted from the terminal device 300 among the plurality of base stations 200 that have acquired the reception information. The base station 200 from which frame information is acquired is identified. For example, the server 100 may specify, from among the plurality of base stations 200, a base station 200 having a higher signal strength relating to the reception of frame information transmitted from the terminal device 300. Then, the server 100 acquires frame information transmitted from the terminal device 300 to the base station 200 from the specified base station 200. In addition, the server 100 acquires non-payload information based on the frame information from the base stations 200 other than the specified base station 200 (S411).
　サーバ１００は、受信したフレーム情報とペイロード無し情報とに基づき、端末装置３００の位置の推定を行う。また、サーバ１００は、受信したフレーム情報を復調及び復号し、当該復調及び当該復号の結果として得られる端末装置３００の識別情報を、自身が管理する登録情報と比較する。これにより、サーバ１００は、当該フレーム情報の送信元となる端末装置３００が、アプリケーションからの依頼に応じた位置推定の対象となる端末装置３００であることを確認する（Ｓ４１３）。 The server 100 estimates the position of the terminal device 300 based on the received frame information and no-payload information. In addition, the server 100 demodulates and decodes the received frame information, and compares the identification information of the terminal device 300 obtained as a result of the demodulation and the decoding with registration information managed by itself. Thus, the server 100 confirms that the terminal device 300 that is the transmission source of the frame information is the terminal device 300 that is the target of position estimation according to the request from the application (S413).
　そして、サーバ１００は、再構成したフレーム情報の送信元となる端末装置３００が、位置推定の対象となる端末装置３００であることを確認すると、従前に推定した当該端末装置３００の位置情報をアプリケーションに送信する。 Then, when the server 100 confirms that the terminal device 300 serving as a transmission source of the reconstructed frame information is the terminal device 300 targeted for position estimation, the server 100 applies the previously estimated position information of the terminal device 300 to the application. Send to
　以上、図１１を参照して、図１０に示す例における基地局２００の一連の処理の流れの一例について説明した。 In the above, with reference to FIG. 11, an example of the flow of a series of processes of the base station 200 in the example shown in FIG. 10 has been described.
　続いて、図１２を参照して、図１０に示す例における基地局２００の一連の処理の流れの一例について説明する。図１２は、本実施形態に係る基地局２００の一連の処理の流れの他の一例について説明するためのフローチャートである。 Subsequently, an example of a flow of a series of processes of the base station 200 in the example illustrated in FIG. 10 will be described with reference to FIG. FIG. 12 is a flowchart for describing another example of the flow of the series of processes of the base station 200 according to the present embodiment.
　基地局２００は、端末装置３００からフレーム情報を受信すると、図１２に示した処理を開始する。即ち、基地局２００は、まず端末装置３００からフレーム情報を受信する（Ｓ４５１）。 When the base station 200 receives frame information from the terminal device 300, the base station 200 starts the process shown in FIG. That is, the base station 200 first receives frame information from the terminal device 300 (S451).
　次いで、基地局２００は、サーバ１００から受信情報の要求があった場合に、端末装置３００からのフレーム情報の受信に係る各種状態や状況を示す受信情報をサーバ１００に送信する（Ｓ４５３）。 Next, when the base station 200 receives a request for reception information from the server 100, the base station 200 transmits reception information indicating various states and conditions relating to reception of frame information from the terminal device 300 to the server 100 (S453).
　次いで、基地局２００は、サーバ１００からフレーム情報の要求の有無を判定する（Ｓ４５５）。基地局２００は、サーバ１００からフレーム情報の要求を受信した場合には（Ｓ４５５、ＹＥＳ）、端末装置３００から受信したフレーム情報をサーバ１００に送信する（Ｓ４５７）。 Next, the base station 200 determines whether there is a request for frame information from the server 100 (S455). When the base station 200 receives a request for frame information from the server 100 (S455, YES), the base station 200 transmits the frame information received from the terminal device 300 to the server 100 (S457).
　なお、基地局２００は、サーバ１００からフレーム情報の要求が無い場合には（Ｓ４５５、ＮＯ）、端末装置３００から受信したフレーム情報の送信に係る処理については実行せずに、次の処理に遷移してもよい。 When there is no request for frame information from server 100 (S455, NO), base station 200 does not execute the process related to the transmission of frame information received from terminal apparatus 300, and transitions to the next process. You may
　また、基地局２００は、サーバ１００からペイロード無し情報の要求の有無を判定する（Ｓ４５９）。基地局２００は、サーバ１００からペイロード無し情報の要求を受信した場合には（Ｓ４５９、ＹＥＳ）、端末装置３００から受信したフレーム情報のうち、ペイロードが含まれない部分の情報を抽出することでペイロード無し情報を生成する（Ｓ４６１）。また、基地局２００は、生成したペイロード無し情報を、サーバ１００からの要求に対する応答として当該サーバ１００に送信する（Ｓ４６３）。 Further, the base station 200 determines the presence or absence of a request for no payload information from the server 100 (S459). When the base station 200 receives a request for no-payload information from the server 100 (S 459, YES), the base station 200 extracts the information of the portion not containing the payload from the frame information received from the terminal device 300. No information is generated (S461). Also, the base station 200 transmits the generated no-payload information to the server 100 as a response to the request from the server 100 (S463).
　なお、基地局２００は、サーバ１００からペイロード無し情報の要求が無い場合には（Ｓ４５９、ＮＯ）、当該ペイロード無し情報の生成及び当該ペイロード無し情報の送信に係る処理については実行しなくてもよい。 When there is no request for no payload information from server 100 (S459, NO), base station 200 may not execute the process related to the generation of the no payload information and the transmission of the no payload information. .
　以上、図１１を参照して、図１０に示す例における基地局２００の一連の処理の流れの一例について説明した。 In the above, with reference to FIG. 11, an example of the flow of a series of processes of the base station 200 in the example shown in FIG. 10 has been described.
　　＜２．３．評価＞
　以上説明したように、本開示の第１の実施形態に係る通信システムにおいて、サーバは、端末装置から複数の基地局それぞれに無線通信を介して送信されたフレーム情報に関連する所定の制御情報を、当該複数の基地局それぞれから取得する。当該制御情報としては、例えば、前述したフレーム無し情報や受信情報等が挙げられる。そして、サーバは、上記複数の基地局それぞれから取得された上記制御情報に基づき、上記フレーム情報に含まれるペイロードを取得する基地局を特定する。 <2.3. Evaluation>
As described above, in the communication system according to the first embodiment of the present disclosure, the server transmits predetermined control information related to frame information transmitted from the terminal device to each of the plurality of base stations via wireless communication. , From each of the plurality of base stations. As the said control information, the frame absence information mentioned above, reception information, etc. are mentioned, for example. Then, based on the control information acquired from each of the plurality of base stations, the server specifies a base station that acquires a payload included in the frame information.
　以上のように本実施形態に係る通信システムに依れば、サーバは、複数の基地局のうち、一部の基地局からのみ、対象となる端末装置から各基地局に送信されたフレーム情報に含まれるペイロードを受信することが可能となる。そのため、本実施形態に係る通信システムに依れば、複数の基地局それぞれからフレーム情報全体（特に、当該フレーム情報に含まれるペイロード）がサーバに送信される場合に比べて、サーバと各基地局との間の通信のトラフィックを制限することが可能となる。即ち、本実施形態に係る通信システムに依れば、システム全体の運用効率をより向上させるが可能となる。 As described above, according to the communication system according to the present embodiment, the server transmits frame information transmitted from the target terminal apparatus to each base station only from a part of the plurality of base stations. It is possible to receive the included payload. Therefore, according to the communication system according to the present embodiment, the server and each base station are compared to the case where the entire frame information (in particular, the payload included in the frame information) is transmitted from each of the plurality of base stations to the server. It is possible to limit the traffic of communication between the That is, according to the communication system according to the present embodiment, the operation efficiency of the entire system can be further improved.
　＜＜３．第２の実施形態＞＞
　続いて、本開示の第２の実施形態について説明する。 << 3. Second embodiment >>
Subsequently, a second embodiment of the present disclosure will be described.
　　＜３．１．技術的課題＞
　まず、第２の実施形態に係る通信システムの技術的課題について以下に説明する。 <3.1. Technical issues>
First, technical problems of the communication system according to the second embodiment will be described below.
　前述したローコスト端末のような低消費電力の無線通信端末の消費電力をより手法する技術の一例として、３ＧＰＰ（Third　Generation　Partnership　Project）で規格化されたＤＲＸ／ＤＴＸ（Discontinuous　Reception／Discontinuous　Transmission）のように、受信待ち受け時間や送信時間を制御する手法が挙げられる。ＤＲＸ／ＤＴＸについては、例えば、米国特許出願公開第２００８／０１８６８９２号明細書に開示されている。 As an example of a technique to make the power consumption of a low-power-consumption wireless communication terminal such as the above-mentioned low-cost terminal more appealing, such as DRX / DTX (Discontinuous Reception / Discontinuous Transmission) standardized by the Third Generation Partnership Project (3GPP) There are methods for controlling reception waiting time and transmission time. DRX / DTX is disclosed in, for example, US Patent Application Publication No. 2008/0186892.
　一方で、水産業や農業等の分野への適用を想定した場合には、バッテリー交換等の保守を頻繁に行うことが困難な場合も想定され、一般的に利用される通信端末（例えば、スマートフォン等）に比べて、バッテリーからの電力供給による駆動をより長い期間維持することが要求される場合がある。 On the other hand, when application to fields such as the fish industry and agriculture is assumed, it is assumed that it is difficult to frequently perform maintenance such as battery replacement, and a communication terminal used generally (for example, a smartphone) It may be required to maintain the drive by the power supply from the battery for a longer period of time, as compared with etc.).
　また、ローコスト端末においては、スマートフォン等のような通信端末とは異なり、端末装置から基地局へのアップリンク送信のみを行い、基地局からのダウンリンク信号を受信する機能を有していない場合もある。これに対して、前述したようなＤＲＸ／ＤＴＸは、端末装置と基地局との間の双方向通信を前提としている。そのため、上記のように、基地局へのアップリンク送信のみが可能な端末装置を想定した場合には、上記ＤＲＸ／ＤＴＸの技術を適用することが困難な場合がある。 Also, unlike a communication terminal such as a smart phone, the low-cost terminal only performs uplink transmission from the terminal device to the base station, and does not have a function to receive the downlink signal from the base station. is there. On the other hand, DRX / DTX as described above is premised on two-way communication between a terminal device and a base station. Therefore, as described above, in the case where a terminal apparatus capable of only uplink transmission to a base station is assumed, it may be difficult to apply the DRX / DTX technique.
　以上のような状況を鑑み、本実施形態では、端末装置の電力消費をより低減することで、システム全体の運用効率をより向上させることが可能な技術について提案する。 In view of the situation as described above, this embodiment proposes a technique capable of further improving the operation efficiency of the entire system by further reducing the power consumption of the terminal device.
　　＜３．２．技術的特徴＞
　以下に、本実施形態に係る通信システムの技術的特徴について説明する。 <3.2. Technical features>
Hereinafter, technical features of the communication system according to the present embodiment will be described.
　　＜３．２．１．システム構成＞
　まず、本実施形態に係る通信システムのシステム構成の一例について概要を説明する。例えば、図１３は、本実施形態に係る通信システムのシステム構成の一例について説明するための説明図である。なお、以降では、便宜上、本実施形態に係る通信システムを、図１を参照して説明した通信システム１と明示的に区別する場合に「通信システム１Ｂ」と称する場合がある。また、図１３において、参照符号３００Ａ及び３００Ｂのそれぞれは、図１に示す端末装置３００に相当する。また、図１３において、図１と同様の符号が付された構成は、図１に示す例と同様の構成を示すものとする。そのため、本実施形態では、図１を参照して説明した例と異なる部分に着目して説明し、図１を参照して説明した例と実質的に同様の部分については詳細な説明は省略する。 <3.2.1. System configuration>
First, an outline of an example of a system configuration of a communication system according to the present embodiment will be described. For example, FIG. 13 is an explanatory diagram for describing an example of a system configuration of the communication system according to the present embodiment. Hereinafter, for the sake of convenience, the communication system according to the present embodiment may be referred to as a "communication system 1B" when it is explicitly distinguished from the communication system 1 described with reference to FIG. Moreover, in FIG. 13, each of reference numerals 300A and 300B corresponds to the terminal device 300 shown in FIG. Further, in FIG. 13, the configuration to which the same reference numerals as in FIG. 1 are attached indicates the same configuration as the example shown in FIG. 1. Therefore, in the present embodiment, description will be given focusing on parts different from the example described with reference to FIG. 1, and detailed description will be omitted for parts substantially similar to the example described with reference to FIG. .
　本実施形態に係る通信システム１Ｂは、図１を参照して説明した例と同様に、端末装置３００と、複数の基地局２００と、サーバ１００とを含む。なお、本説明では、便宜上図１３に示すように、端末装置３００として、端末装置３００Ａ及び３００Ｂを含み、複数の基地局２００として、基地局２００Ａ～２００Ｃを含むものとする。なお、基地局２００Ａ～２００Ｃのうち、一部の基地局２００については、図１に示す例と同様にローミングサーバ６００の管理下にあってもよい。本説明では、本実施形態に係る通信システムの特徴をよりわかりやすくするために、基地局２００Ａ～２００Ｃは、サーバ１００の管理下にあるものとする。また、端末装置３００Ａ及び３００Ｂのそれぞれは、基地局２００Ａ～２００Ｃそれぞれのセル内に位置するものとする。また、各端末装置３００と各基地局２００との間の通信には、通信範囲のより広いサブギガヘルツ（例えば、９００ＭＨｚ帯）を使用したＬＰＷＡが適用される。 A communication system 1B according to the present embodiment includes a terminal device 300, a plurality of base stations 200, and a server 100, as in the example described with reference to FIG. In the present description, for convenience, as shown in FIG. 13, the terminal device 300 includes terminal devices 300A and 300B, and the plurality of base stations 200 includes base stations 200A to 200C. Among the base stations 200A to 200C, some of the base stations 200 may be under the management of the roaming server 600 as in the example shown in FIG. In the present description, the base stations 200A to 200C are under the management of the server 100 in order to make the features of the communication system according to the present embodiment more understandable. Further, each of the terminal devices 300A and 300B is located in the cell of each of the base stations 200A to 200C. Further, for communication between each terminal device 300 and each base station 200, LPWA using a sub-gigahertz (for example, 900 MHz band) with a wider communication range is applied.
　無線通信におけるカバレッジを拡大する手法として、例えば、送信側が同一フレームを複数回繰り返して送信し、受信側において繰り返し送信された複数のフレームを合成することで受信感度をより向上させる手法が挙げられる。本実施形態に係る通信システム１においては、端末装置３００それぞれにおけるバッテリーの電力の残量に応じて、当該繰り返し送信の回数が制御される。具体的な一例として、図１３に示す端末装置３００Ｂのように、バッテリーの電力の残量が十分な場合には、端末装置３００は、所定の期間ごとに定期的に、同一フレームをあらかじめ規定された回数（例えば、８回）だけ繰り返して送信する。一方で、図１３に示す端末装置３００Ａのように、バッテリーの電力の残量が少ない場合には、端末装置３００は、所定の期間ごとの上記繰り返し送信の回数を低減させることで（例えば、２回）、送信に係る処理の実行時間を短縮し、バッテリーの電力消費を抑えてもよい。 As a method of expanding the coverage in wireless communication, for example, there is a method of further improving reception sensitivity by transmitting the same frame repeatedly a plurality of times and combining the plurality of frames repeatedly transmitted on the receiving side. In the communication system 1 according to the present embodiment, the number of times of the repetitive transmission is controlled according to the remaining amount of power of the battery in each of the terminal devices 300. As a specific example, as in the terminal device 300B shown in FIG. 13, when the remaining power of the battery is sufficient, the terminal device 300 periodically predefines the same frame every predetermined period. The transmission is repeated a predetermined number of times (for example, eight times). On the other hand, as in the terminal device 300A shown in FIG. 13, when the remaining amount of power of the battery is small, the terminal device 300 reduces the number of times of the above-mentioned repetitive transmission for each predetermined period (for example, 2 Time), the execution time of the process concerning transmission may be shortened, and the power consumption of the battery may be suppressed.
　また、本実施形態においては、サーバ１００は、送信回数が低減された端末装置３００からのフレームからデータを復号する場合には、当該端末装置３００からのフレームを複数の基地局２００（例えば、基地局２００Ａ～２００Ｃ）から収取して合成する。このような制御により、端末装置３００から同一フレームが繰り返し送信される回数が低減された場合においても、送信回数の低減分のフレームを、より多くの基地局２００からの当該フレームの収集により補うことが可能となる。また、端末装置３００から同一フレームが繰り返し送信される回数が低減されていない場合においては、サーバ１００は、例えば、端末装置３００に最も近い基地局２００（換言すると、受信信号強度の最も高い基地局２００）が受信したフレームを当該基地局２００から取得し、当該フレームからデータを復号してもよい。 Further, in the present embodiment, in the case where the server 100 decodes data from a frame from the terminal device 300 for which the number of transmissions has been reduced, a plurality of base stations 200 (for example, a base Collected from stations 200A to 200C) and synthesized. Even when the number of times the same frame is repeatedly transmitted from the terminal device 300 is reduced by such control, the frames corresponding to the reduced number of transmissions are compensated by collecting the frames from more base stations 200. Is possible. Also, in the case where the number of times the same frame is repeatedly transmitted from the terminal device 300 is not reduced, the server 100 may, for example, select the base station 200 closest to the terminal device 300 (in other words, the base station with the highest received signal strength). The frame received by 200) may be acquired from the base station 200, and data may be decoded from the frame.
　以上、図１３を参照して、本実施形態に係る通信システムのシステム構成の一例について概要を説明した。 The outline of the example of the system configuration of the communication system according to the present embodiment has been described above with reference to FIG.
　　＜３．２．２．フレーム構成＞
　続いて、本実施形態に係る通信システムにおいて、端末装置３００から基地局２００に送信されるフレームのフレーム構成の一例に説明する。例えば、図１４は、本実施形態に係る通信システムにおけるフレームのフレーム構成の一例について説明するための説明図である。 <3.2.2. Frame configuration>
Subsequently, in the communication system according to the present embodiment, an example of the frame configuration of a frame transmitted from the terminal device 300 to the base station 200 will be described. For example, FIG. 14 is an explanatory diagram for describing an example of a frame configuration of a frame in the communication system according to the present embodiment.
　図１４において、参照符号８０１は、PLCP（Physical　Layer　Convergence Protocol）　Service　Data　Unit（ＰＳＤＵ）を示しており、この中には端末装置３００から基地局２００に送信されるデータが含まれる。当該データには、例えば、端末装置３００の位置情報、当該端末装置３００の識別情報、当該端末装置３００が各種センサから取得した情報等が含まれ得る。 In FIG. 14, reference numeral 801 indicates a Physical Layer Convergence Protocol (PLCP) Service Data Unit (PSDU), which includes data transmitted from the terminal device 300 to the base station 200. The data may include, for example, position information of the terminal device 300, identification information of the terminal device 300, information acquired by the terminal device 300 from various sensors, and the like.
　参照符号８０２は、ＰＳＤＵを前方誤り訂正(ＦＥＣ：Forward　Error　Correction)により符号化した情報を示している。なお、当該符号化には、例えば、ＬＤＰＣ符号等が使用される。 Reference numeral 802 denotes information obtained by encoding PSDU by forward error correction (FEC). Note that, for example, an LDPC code or the like is used for the encoding.
　参照符号８０３は、ＦＥＣで符号化された同一ブロック(coded　block)が複数含まれ得る。例えば、繰り返し送信の回数が３回の場合には、３つの同一ブロックが含まれることとなる。なお、最後のブロックについては、パケット長を調整するために、Punctured　blockとして一定の情報が取り除かれる。 The reference code 803 may include a plurality of the same FEC encoded blocks (coded blocks). For example, in the case where the number of repeated transmissions is three, three identical blocks are included. As to the last block, in order to adjust the packet length, certain information is removed as Punctured block.
　参照符号８０４は、参照符号８０３で示したブロックに対して、前後にガードビットが追加されたデータを示している。 Reference numeral 804 denotes data in which guard bits are added to the block indicated by reference numeral 803 before and after.
　参照符号８０５は、参照符号８０４で示したデータに対して、同期信号を挿入してスクランブルをかけることで生成された、PLCP　Protocol　Data　Unit（ＰＰＤＵ）を示している。 Reference numeral 805 denotes a PLCP Protocol Data Unit (PPDU) generated by inserting a synchronization signal and scrambling the data indicated by reference numeral 804.
　端末装置３００は、参照符号８０４で示したＰＰＤＵに対して、例えば、ＢＰＳＫ（Binary　Phase　Shift　Keying）等の変調をかけて、当該変調後のフレームを基地局２００に送信する。 The terminal device 300 applies modulation such as BPSK (Binary Phase Shift Keying) to the PPDU indicated by reference numeral 804, and transmits the frame after the modulation to the base station 200.
　例えば、参照符号８０６は、同一のＰＰＤＵ（換言すると、フレーム）をＭ個のタイムスロット（Time　Slot）を用いて繰り返し送信される場合の一例を模式的に示している。 For example, reference numeral 806 schematically shows an example of the case where the same PPDU (in other words, frame) is repeatedly transmitted using M time slots.
　以上、図１４を参照して、本実施形態に係る通信システムにおいて、端末装置３００から基地局２００に送信されるフレームのフレーム構成の一例に説明した。 In the above, with reference to FIG. 14, in the communication system according to the present embodiment, the example of the frame configuration of the frame transmitted from the terminal device 300 to the base station 200 has been described.
　　＜３．２．３．処理＞
　続いて、本実施形態に係る通信システムの一連の処理の流れの一例について説明する。例えば、図１５は、本実施形態に係る通信システムの一連の処理の流れの一例について示したシーケンス図である。また、本説明では、当該通信システムは、図１３に示すようなシステム構成を有するものとする。 <3.2.3. Processing>
Then, an example of a flow of a series of processings of a communication system concerning this embodiment is explained. For example, FIG. 15 is a sequence diagram showing an example of the flow of a series of processes of the communication system according to the present embodiment. Further, in the present description, the communication system is assumed to have a system configuration as shown in FIG.
　端末装置３００は、ＧＰＳ衛星５００から送信された無線信号を受信し、当該無線信号の受信結果に基づき自身の位置情報を取得する（Ｓ５０１）。 The terminal device 300 receives the radio signal transmitted from the GPS satellite 500, and acquires its own position information based on the reception result of the radio signal (S501).
　端末装置３００は、自身の位置情報に基づき、規定範囲内（例えば、半径２ｋｍ以内等）に存在する基地局２００の数をカウントし、当該基地局２００の数と、バッテリーの電力の残量と、に応じて、コードブロックやＰＰＤＵ等のデータの繰り返し送信の回数を決定する（Ｓ５０３）。なお、本実施形態では、上記コードブロックや上記ＰＰＤＵ等のような繰り返し送信の対象となるデータを「フレーム情報」とも称する。 The terminal device 300 counts the number of base stations 200 existing within a prescribed range (for example, within a radius of 2 km, etc.) based on its own position information, and the number of the base stations 200 and the remaining power of the battery. In accordance with, the number of times of repetitive transmission of data such as code blocks and PPDUs is determined (S503). In the present embodiment, data to be repeatedly transmitted, such as the code block and the PPDU, is also referred to as “frame information”.
　例えば、以下に示す表１は、周囲の基地局の数及びバッテリーの電力の残量と、繰り返し送信の回数と、の関係の一例を示している。 For example, Table 1 shown below shows an example of the relationship between the number of surrounding base stations, the remaining amount of power of the battery, and the number of repeated transmissions.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　表１に示す例では、繰り返し送信回数の最大を８回としており、周囲の基地局２００の数が２基以上であり、かつバッテリー残量が閾値以下の場合に、繰り返し送信の数が制限されている。具体的な一例として、周囲の基地局の数が２基であり、バッテリーの電力の残量が３０％以下かつ２０％を超える場合には、繰り返し送信の回数が６回に設定される。即ち、周囲の基地局の数が２基の場合には、バッテリーの電力の残量が３０％以下の場合に、繰り返し送信の回数が制限される。また、他の一例として、周囲の基地局の数が３基以上の場合においては、バッテリーの電力の残量が４０％以下かつ３０％を超える場合に、繰り返し送信の回数が６回に設定される。即ち、周囲の基地局の数が３基以上の場合には、バッテリーの電力の残量が４０％以下の場合に、繰り返し送信の回数が制限される。 In the example shown in Table 1, the maximum number of repeated transmissions is eight, the number of repeated transmissions is limited when the number of surrounding base stations 200 is two or more, and the remaining battery capacity is less than or equal to the threshold. ing. As a specific example, when the number of surrounding base stations is two and the remaining amount of power of the battery is 30% or less and more than 20%, the number of repeated transmissions is set to six. That is, when the number of surrounding base stations is two, the number of repeated transmissions is limited when the remaining power of the battery is 30% or less. As another example, in the case where the number of surrounding base stations is three or more, the number of repeated transmissions is set to six when the remaining power of the battery is 40% or less and more than 30%. Ru. That is, when the number of surrounding base stations is three or more, the number of repeated transmissions is limited when the remaining amount of power of the battery is 40% or less.
　次いで、端末装置３００は、基地局２００へ送信するデータ（例えば、端末装置３００の位置情報）に基づくフレーム情報を、決定した回数に応じて、周囲の基地局２００に対する繰り返し送信を行う。なお、本説明では、端末装置３００の周囲には、基地局２００Ａ～２００Ｃが存在するものとする。即ち、端末装置３００から送信されたフレーム情報は、基地局２００Ａ～２００Ｃのそれぞれにより受信される（Ｓ５０５Ａ～Ｓ５０５Ｃ）。 Next, the terminal device 300 repeatedly transmits frame information based on data (for example, position information of the terminal device 300) to be transmitted to the base station 200 to surrounding base stations 200 according to the determined number of times. In the present description, it is assumed that base stations 200A to 200C exist around the terminal device 300. That is, the frame information transmitted from the terminal device 300 is received by each of the base stations 200A to 200C (S505A to S505C).
　なお、フレーム情報（例えば、コードブロックやＰＰＤＵ等）が基地局２００に繰り返して送信されれば、繰り返し送信の単位は特に限定されない。即ち、ＰＰＤＵを構成するコードブロックの数が、決定された繰り返し送信の回数に応じて制御されてもよい。また、他の一例として、ＰＰＤＵを送信するタイムスロットの数が、決定された繰り返し送信の回数に応じて制御されてもよい。 In addition, if frame information (for example, a code block, PPDU, etc.) is repeatedly transmitted to base station 200, the unit of repetitive transmission is not particularly limited. That is, the number of code blocks constituting the PPDU may be controlled according to the determined number of repeated transmissions. As another example, the number of time slots for transmitting PPDU may be controlled according to the determined number of repeated transmissions.
　また、他の一例として、コードブロックの数と、ＰＰＤＵを送信するタイムスロットの数と、が個別に制御されてもよい。例えば、以下に示す表２は、周囲の基地局の数及びバッテリーの電力の残量と、繰り返し送信の回数と、の関係の他の一例を示しており、コードブロックの数と、ＰＰＤＵを送信するタイムスロットの数と、を個別に制御する場合の一例について示している。 Also, as another example, the number of code blocks and the number of time slots for transmitting PPDU may be separately controlled. For example, Table 2 below shows another example of the relationship between the number of surrounding base stations, the remaining amount of battery power, and the number of repeated transmissions, and the number of code blocks and PPDU transmission An example of individually controlling the number of time slots to be performed is shown.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
　また、図１５に示すように、サーバ１００は、端末装置３００からのフレーム情報の受信が予定された時刻や、当該端末装置３００がフレーム情報の送信に利用する周波数帯域等の情報に応じて、対象となる基地局２００に、端末装置３００からのフレーム情報の送信を要求する。例えば、図１５に示す例では、サーバ１００は、基地局２００Ａに対して上記フレーム情報の送信を要求している（Ｓ５０７Ａ）。そして、サーバ１００は、当該要求に対する応答として、上記フレーム情報を基地局２００Ａから取得する（Ｓ５０９Ａ）。 Also, as shown in FIG. 15, the server 100 responds to information such as the time when reception of frame information from the terminal device 300 is scheduled, and the frequency band used by the terminal device 300 to transmit frame information, etc. Requests transmission of frame information from the terminal device 300 to the target base station 200. For example, in the example illustrated in FIG. 15, the server 100 requests the base station 200A to transmit the frame information (S507A). Then, the server 100 acquires the frame information from the base station 200A as a response to the request (S509A).
　次いで、サーバ１００は、取得したフレーム情報を復調して解析し、端末装置３００から当該フレーム情報が繰り返し送信された回数が閾値以下か否かを確認する（Ｓ５１１）。サーバ１００は、対象となる端末装置３００からの繰り返し送信の回数が閾値以下の場合には、自身が管理する基地局２００のうち、当該端末装置３００の周辺に位置し、かつ上記基地局２００Ａとは異なる他の基地局２００に対してフレーム情報の送信を要求する。例えば、図１５に示す例では、サーバ１００は、基地局２００Ｂ及び２００Ｃのそれぞれに対して上記フレーム情報の送信を要求している（Ｓ５０７Ｂ、Ｓ５０７Ｃ）。そして、サーバ１００は、当該要求に対する応答として、上記フレーム情報を基地局２００Ｂ及び２００Ｃのそれぞれから取得する（Ｓ５０９Ｂ、Ｓ５０９Ｃ）。 Next, the server 100 demodulates and analyzes the acquired frame information, and confirms whether the number of times the frame information has been repeatedly transmitted from the terminal device 300 is equal to or less than a threshold (S511). In the case where the number of repeated transmissions from the target terminal device 300 is equal to or less than the threshold, the server 100 is located around the terminal device 300 among the base stations 200 managed by itself and with the above base station 200A. Requests the transmission of frame information from another different base station 200. For example, in the example illustrated in FIG. 15, the server 100 requests the base stations 200B and 200C to transmit the frame information (S507B and S507C). Then, the server 100 acquires the frame information from each of the base stations 200B and 200C as a response to the request (S509B, S509C).
　次いで、サーバ１００は、各基地局２００（即ち、基地局２００Ａ～２００Ｃ）から取得したフレーム情報を合成し、当該合成により信号レベルが増大したフレーム情報に対して復調処理を施すことで、端末装置３００から送信されたデータを復号する（Ｓ５１３）。 Next, the server 100 combines the frame information acquired from each of the base stations 200 (that is, the base stations 200A to 200C), and performs demodulation processing on the frame information whose signal level has increased due to the combination, thereby a terminal device. The data transmitted from 300 is decoded (S513).
　以上、図１５を参照して、本実施形態に係る通信システムの一連の処理の流れの一例について説明した。 The example of the flow of the series of processes of the communication system according to the present embodiment has been described above with reference to FIG.
　続いて、図１６を参照して、図１５に示す例における端末装置３００の一連の処理の流れの一例について説明する。図１６は、本実施形態に係る端末装置３００の一連の処理の流れの一例について説明するためのフローチャートである。 Subsequently, an example of a flow of a series of processes of the terminal device 300 in the example illustrated in FIG. 15 will be described with reference to FIG. FIG. 16 is a flowchart for describing an example of a flow of a series of processes of the terminal device 300 according to the present embodiment.
　まず、端末装置３００は、ＧＰＳ衛星５００から送信された無線信号を受信し、当該無線信号の受信結果に基づき自身の位置情報を取得する（Ｓ６０１）。 First, the terminal device 300 receives a radio signal transmitted from the GPS satellite 500, and acquires its own position information based on the reception result of the radio signal (S601).
　また、端末装置３００は、自身のバッテリーに関する情報（即ち、バッテリーの電力の残量に関する情報）を取得する（Ｓ６０３）。 Further, the terminal device 300 acquires information on its own battery (that is, information on the remaining amount of power of the battery) (S603).
　端末装置３００は、取得したバッテリーに関する情報に基づき、バッテリーの電力の残量が閾値以下か否かを判定する（Ｓ６０５）。 The terminal device 300 determines whether the remaining amount of power of the battery is equal to or less than the threshold value based on the acquired information on the battery (S605).
　バッテリーの電力の残量が閾値以下の場合には（Ｓ６０５、ＹＥＳ）、端末装置３００は、自身の位置情報の取得結果に基づき、規定範囲内に存在する基地局２００の数（換言すると、通信可能な基地局２００の数）をカウントし、基地局２００の数が閾値以上か否かを判定する（Ｓ６０７）。具体的には、端末装置３００は、あらかじめ取得された各基地局２００の位置情報と、自身の位置情報の結果と、を照合することで、自身を中心とした規定範囲内に存在する基地局２００の数をカウントすればよい。もちろん、端末装置３００が、規定範囲内に存在する基地局２００の数を認識することが可能であれば、その方法は特に限定されない。具体的な一例として、端末装置３００が基地局２００との間での双方向通信が可能な場合には、当該端末装置３００は、周囲の基地局２００に対してリクエストを送信し、当該リクエストに対するレスポンスの数に応じて、周辺に位置する基地局２００の数を認識してもよい。 If the remaining amount of power of the battery is equal to or less than the threshold (S605, YES), the terminal device 300 determines the number of base stations 200 existing within the prescribed range based on the acquisition result of its own position information (in other words, communication The number of possible base stations 200 is counted, and it is determined whether the number of base stations 200 is equal to or more than a threshold (S607). Specifically, the terminal device 300 collates the position information of each of the base stations 200 acquired in advance with the result of the position information of itself, thereby a base station existing in a defined range centered on itself. It is sufficient to count the number of 200. Of course, the method is not particularly limited as long as the terminal device 300 can recognize the number of base stations 200 existing in the specified range. As a specific example, when the terminal device 300 can perform two-way communication with the base station 200, the terminal device 300 transmits a request to the surrounding base station 200, and the terminal device 300 responds to the request. Depending on the number of responses, the number of base stations 200 located in the periphery may be recognized.
　規定範囲内に存在する基地局２００の数が閾値以上の場合には（Ｓ６０７、ＹＥＳ）、端末装置３００は、前述したバッテリーの電力の残量と、当該基地局２００の数と、に応じて、データ（例えば、コードブロックやフレーム情報）の繰り返し送信の回数を制御（制限）する（Ｓ６０９）。一方で、バッテリーの電力の残量が閾値を超える場合（Ｓ６０５、ＮＯ）や、規定範囲内に存在する基地局２００の数が閾値未満の場合には（Ｓ６０７、ＮＯ）、端末装置３００は、上記繰り返し送信の回数の制御を行わなくてもよい。 If the number of base stations 200 present in the specified range is equal to or greater than the threshold (S607, YES), the terminal device 300 responds to the remaining amount of power of the battery described above and the number of the base stations 200. And control (limit) the number of times of repeated transmission of data (for example, code block and frame information) (S609). On the other hand, if the remaining power of the battery exceeds the threshold (S605, NO), or if the number of base stations 200 present within the prescribed range is less than the threshold (S607, NO), the terminal device 300 It is not necessary to control the number of repeated transmissions.
　そして、端末装置３００は、最終的に決定された繰り返し送信の回数に応じて、周囲の基地局２００に対してデータの繰り返し送信を実行する（Ｓ６１１）。 Then, the terminal device 300 repeatedly transmits data to the surrounding base stations 200 according to the number of the repeated transmission finally determined (S611).
　以上、図１６を参照して、図１５に示す例における端末装置３００の一連の処理の流れの一例について説明した。 In the above, with reference to FIG. 16, an example of the flow of a series of processes of the terminal device 300 in the example shown in FIG. 15 has been described.
　続いて、図１７を参照して、図１５に示す例におけるサーバ１００の一連の処理の流れの一例について説明する。図１７は、本実施形態に係るサーバ１００の一連の処理の流れの他の一例について説明するためのフローチャートである。 Subsequently, an example of a flow of a series of processes of the server 100 in the example illustrated in FIG. 15 will be described with reference to FIG. FIG. 17 is a flowchart for describing another example of the flow of the series of processes of the server 100 according to the present embodiment.
　サーバ１００は、対象となる端末装置３００からフレーム情報が基地局２００により受信される予定時刻を経過すると、当該基地局２００に対して当該フレーム情報の送信を要求し、当該フレーム情報を当該基地局２００から取得する（Ｓ６５１）。 When the scheduled time at which frame information is received from the target terminal device 300 by the base station 200 has passed, the server 100 requests the base station 200 to transmit the frame information, and the frame information is transmitted to the base station. It acquires from 200 (S651).
　なお、対象となる端末装置３００から初めてフレーム情報を受信する場合には、サーバ１００は、当該端末装置３００のセットアップが行われたエリアに該当する基地局２００からフレーム情報を取得してもよい。また、以降については、サーバ１００は、端末装置３００が送信する位置情報に応じた基地局２００から、当該端末装置３００から送信されたフレーム情報を取得してもよい。 When frame information is received from the target terminal device 300 for the first time, the server 100 may acquire frame information from the base station 200 corresponding to the area where the terminal device 300 has been set up. Also, for the subsequent steps, the server 100 may acquire frame information transmitted from the terminal device 300 from the base station 200 according to the position information transmitted by the terminal device 300.
　次いで、サーバ１００は、取得したフレーム情報を復調して解析し（Ｓ６５３）、端末装置３００から当該フレーム情報が繰り返し送信された回数が閾値以下か否かを確認する（Ｓ６５５）。 Next, the server 100 demodulates and analyzes the acquired frame information (S653), and confirms whether the number of times the frame information has been repeatedly transmitted from the terminal device 300 is equal to or less than a threshold (S655).
　繰り返し送信の回数が閾値以下の場合には（Ｓ６５５、ＹＥＳ）、サーバ１００は、自身が管理する基地局２００のうち、対象となる端末装置３００の周辺に位置する他の基地局２００に対してフレーム情報の送信を要求する。そして、サーバ１００は、当該要求に対する応答として、当該フレーム情報を当該他の基地局２００から取得する（Ｓ６５７）。そして、サーバ１００は、各基地局２００から取得したフレーム情報を合成することで、信号レベルがより増大したフレーム情報を生成する。 If the number of times of repeated transmission is equal to or less than the threshold (S655, YES), the server 100 transmits to another base station 200 located around the target terminal device 300 among the base stations 200 managed by itself. Request transmission of frame information. Then, the server 100 acquires the frame information from the other base station 200 as a response to the request (S657). Then, the server 100 combines the frame information acquired from the respective base stations 200 to generate frame information in which the signal level is further increased.
　なお、繰り返し送信の回数が閾値を超える場合には（Ｓ６５５、ＮＯ）、サーバ１００は、他の基地局２００からのフレーム情報の取得に係る処理や、フレーム情報の合成に係る処理を実行しなくてもよい。 If the number of times of repeated transmission exceeds the threshold (S655, NO), the server 100 does not execute the process related to acquisition of frame information from another base station 200 or the process related to combining frame information. May be
　そして、サーバ１００は、フレーム情報に対して復調処理を施すことで、端末装置３００から送信されたデータを復号する（Ｓ６６１）。 Then, the server 100 performs demodulation processing on the frame information to decode the data transmitted from the terminal device 300 (S661).
　以上、図１７を参照して、図１５に示す例におけるサーバ１００の一連の処理の流れの一例について説明した。 The example of the flow of the series of processes of the server 100 in the example illustrated in FIG. 15 has been described above with reference to FIG.
　　＜３．３．評価＞
　以上説明したように、本実施形態に係る通信システムにおいて、端末装置は、無線通信を介して１以上の基地局にフレーム情報（例えば、コードブロックやＰＰＤＵ等）が繰り返し送信されるように制御する。また、端末装置は、バッテリーの状態に関する情報を取得する。そして、端末装置は、上記バッテリーの状態と、上記無線通信を介してフレーム情報を送信可能な基地局の数と、に応じて、１以上の上記基地局に対して所定の期間内にフレーム情報が送信される回数を制御する。また、サーバは、端末装置から無線通信を介して１以上の基地局に繰り返し送信されるフレーム情報を、当該１以上の基地局のうちの少なくとも一部の基地局から取得し、取得された当該フレーム情報からデータを復調する。このとき、所定の期間内に上記端末装置から上記フレーム情報が送信される回数に応じた数の基地局から、当該フレーム情報が取得される。 <3.3. Evaluation>
As described above, in the communication system according to the present embodiment, the terminal device controls so that frame information (for example, code block, PPDU, etc.) is repeatedly transmitted to one or more base stations via wireless communication. . In addition, the terminal device acquires information on the state of the battery. Then, the terminal device transmits frame information within a predetermined period to one or more of the base stations according to the state of the battery and the number of base stations that can transmit frame information via the wireless communication. Control the number of times that is sent. In addition, the server acquires frame information repeatedly transmitted from the terminal device to one or more base stations via wireless communication from at least some of the one or more base stations, and the acquired information Demodulates data from frame information. At this time, the frame information is acquired from the number of base stations according to the number of times the frame information is transmitted from the terminal device within a predetermined period.
　以上のような構成により、本実施形態に係る通信システムに依れば、端末装置は、バッテリーの電力の残量と、周囲の基地局（即ち、フレーム情報を送信可能な基地局）の数と、に応じて、フレーム情報の送信に係る電力の消費量を抑制することが可能となる。特に、都市部等のように基地局のより多いエリアにおいては、端末装置の周囲の基地局の数を考慮して繰り返し送信の回数が制御されることで、フレーム情報の送信に係る電力の消費量をより抑制可能となる効果が期待できる。また、繰り返し送信の回数が少ない場合においても、複数の基地局により受信されたフレーム情報を合成することで、端末装置３００から送信されたデータの復調に係る性能を改善することも可能となる。 With the above configuration, according to the communication system according to the present embodiment, the terminal device has the remaining power of the battery, the number of surrounding base stations (that is, the number of base stations capable of transmitting frame information), and In accordance with the above, it is possible to suppress the consumption of power related to transmission of frame information. In particular, in an area with a large number of base stations, such as urban areas, the number of repeated transmissions is controlled in consideration of the number of base stations around the terminal device, thereby consuming power related to transmission of frame information. The effect that the amount can be further suppressed can be expected. Further, even when the number of times of repeated transmission is small, it is possible to improve the performance concerning demodulation of data transmitted from the terminal device 300 by combining frame information received by a plurality of base stations.
　＜＜４．ハードウェア構成＞＞
　続いて、図１８を参照しながら、本開示の一実施形態に係る通信システムを構成するサーバ１００や基地局２００のような情報処理装置のハードウェア構成の一例について、詳細に説明する。図１８は、本開示の一実施形態に係る通信システムを構成する情報処理装置のハードウェア構成の一構成例を示す機能ブロック図である。 << 4. Hardware configuration >>
Subsequently, an example of a hardware configuration of an information processing apparatus such as the server 100 and the base station 200 that configure the communication system according to an embodiment of the present disclosure will be described in detail with reference to FIG. FIG. 18 is a functional block diagram showing an example of a hardware configuration of an information processing apparatus that constitutes a communication system according to an embodiment of the present disclosure.
　本実施形態に係るシステムを構成する情報処理装置９００は、主に、ＣＰＵ９０１と、ＲＯＭ９０２と、ＲＡＭ９０３と、を備える。また、情報処理装置９００は、更に、ホストバス９０７と、ブリッジ９０９と、外部バス９１１と、インタフェース９１３と、入力装置９１５と、出力装置９１７と、ストレージ装置９１９と、ドライブ９２１と、接続ポート９２３と、通信装置９２５とを備える。 An information processing apparatus 900 constituting a system according to the present embodiment mainly includes a CPU 901, a ROM 902, and a RAM 903. The information processing apparatus 900 further includes a host bus 907, a bridge 909, an external bus 911, an interface 913, an input device 915, an output device 917, a storage device 919, a drive 921 and a connection port 923. And a communication device 925.
　ＣＰＵ９０１は、演算処理装置及び制御装置として機能し、ＲＯＭ９０２、ＲＡＭ９０３、ストレージ装置９１９又はリムーバブル記録媒体９２７に記録された各種プログラムに従って、情報処理装置９００内の動作全般又はその一部を制御する。ＲＯＭ９０２は、ＣＰＵ９０１が使用するプログラムや演算パラメータ等を記憶する。ＲＡＭ９０３は、ＣＰＵ９０１が使用するプログラムや、プログラムの実行において適宜変化するパラメータ等を一次記憶する。これらはＣＰＵバス等の内部バスにより構成されるホストバス９０７により相互に接続されている。例えば、図２に示す処理部１５０の各構成や、図３に処理部２７０の各構成は、ＣＰＵ９０１により実現され得る。 The CPU 901 functions as an arithmetic processing unit and a control unit, and controls the entire operation or a part of the information processing apparatus 900 according to various programs recorded in the ROM 902, the RAM 903, the storage device 919, or the removable recording medium 927. The ROM 902 stores programs used by the CPU 901, calculation parameters, and the like. The RAM 903 temporarily stores a program used by the CPU 901, parameters which appropriately change in the execution of the program, and the like. These are mutually connected by a host bus 907 constituted by an internal bus such as a CPU bus. For example, each configuration of the processing unit 150 shown in FIG. 2 and each configuration of the processing unit 270 shown in FIG.
　ホストバス９０７は、ブリッジ９０９を介して、ＰＣＩ（Ｐｅｒｉｐｈｅｒａｌ　Ｃｏｍｐｏｎｅｎｔ　Ｉｎｔｅｒｃｏｎｎｅｃｔ／Ｉｎｔｅｒｆａｃｅ）バスなどの外部バス９１１に接続されている。また、外部バス９１１には、インタフェース９１３を介して、入力装置９１５、出力装置９１７、ストレージ装置９１９、ドライブ９２１、接続ポート９２３及び通信装置９２５が接続される。 The host bus 907 is connected to an external bus 911 such as a peripheral component interconnect / interface (PCI) bus via the bridge 909. Further, an input device 915, an output device 917, a storage device 919, a drive 921, a connection port 923, and a communication device 925 are connected to the external bus 911 via an interface 913.
　入力装置９１５は、例えば、マウス、キーボード、タッチパネル、ボタン、スイッチ、レバー及びペダル等、ユーザが操作する操作手段である。また、入力装置９１５は、例えば、赤外線やその他の電波を利用したリモートコントロール手段（いわゆる、リモコン）であってもよいし、情報処理装置９００の操作に対応した携帯電話やＰＤＡ等の外部接続機器９２９であってもよい。さらに、入力装置９１５は、例えば、上記の操作手段を用いてユーザにより入力された情報に基づいて入力信号を生成し、ＣＰＵ９０１に出力する入力制御回路などから構成されている。情報処理装置９００のユーザは、この入力装置９１５を操作することにより、情報処理装置９００に対して各種のデータを入力したり処理動作を指示したりすることができる The input device 915 is an operation unit operated by the user, such as a mouse, a keyboard, a touch panel, a button, a switch, a lever, and a pedal. Also, the input device 915 may be, for example, a remote control means (so-called remote control) using infrared rays or other radio waves, or an externally connected device such as a mobile phone or PDA corresponding to the operation of the information processing apparatus 900. It may be 929. Furthermore, the input device 915 includes, for example, an input control circuit that generates an input signal based on the information input by the user using the above-described operation means, and outputs the generated input signal to the CPU 901. The user of the information processing apparatus 900 can input various data to the information processing apparatus 900 and instruct processing operations by operating the input device 915.
　出力装置９１７は、取得した情報をユーザに対して視覚的又は聴覚的に通知することが可能な装置で構成される。このような装置として、ＣＲＴディスプレイ装置、液晶ディスプレイ装置、プラズマディスプレイ装置、ＥＬディスプレイ装置及びランプ等の表示装置や、スピーカ及びヘッドホン等の音声出力装置や、プリンタ装置等がある。出力装置９１７は、例えば、情報処理装置９００が行った各種処理により得られた結果を出力する。具体的には、表示装置は、情報処理装置９００が行った各種処理により得られた結果を、テキスト又はイメージで表示する。他方、音声出力装置は、再生された音声データや音響データ等からなるオーディオ信号をアナログ信号に変換して出力する。 The output device 917 is configured of a device capable of visually or aurally notifying the user of the acquired information. Such devices include display devices such as CRT display devices, liquid crystal display devices, plasma display devices, EL display devices and lamps, audio output devices such as speakers and headphones, and printer devices. The output device 917 outputs, for example, results obtained by various processes performed by the information processing apparatus 900. Specifically, the display device displays the result obtained by the various processes performed by the information processing apparatus 900 as text or an image. On the other hand, the audio output device converts an audio signal composed of reproduced audio data, acoustic data and the like into an analog signal and outputs it.
　ストレージ装置９１９は、情報処理装置９００の記憶部の一例として構成されたデータ格納用の装置である。ストレージ装置９１９は、例えば、ＨＤＤ（Ｈａｒｄ　Ｄｉｓｋ　Ｄｒｉｖｅ）等の磁気記憶部デバイス、半導体記憶デバイス、光記憶デバイス又は光磁気記憶デバイス等により構成される。このストレージ装置９１９は、ＣＰＵ９０１が実行するプログラムや各種データ等を格納する。例えば、図２に示す記憶部１３０や、図３に示す記憶部２６０は、ストレージ装置９１９により実現され得る。 The storage device 919 is a device for data storage configured as an example of a storage unit of the information processing device 900. The storage device 919 is configured of, for example, a magnetic storage unit device such as a hard disk drive (HDD), a semiconductor storage device, an optical storage device, a magneto-optical storage device, or the like. The storage device 919 stores programs executed by the CPU 901, various data, and the like. For example, the storage unit 130 illustrated in FIG. 2 and the storage unit 260 illustrated in FIG. 3 may be realized by the storage device 919.
　ドライブ９２１は、記録媒体用リーダライタであり、情報処理装置９００に内蔵、あるいは外付けされる。ドライブ９２１は、装着されている磁気ディスク、光ディスク、光磁気ディスク又は半導体メモリ等のリムーバブル記録媒体９２７に記録されている情報を読み出して、ＲＡＭ９０３に出力する。また、ドライブ９２１は、装着されている磁気ディスク、光ディスク、光磁気ディスク又は半導体メモリ等のリムーバブル記録媒体９２７に記録を書き込むことも可能である。リムーバブル記録媒体９２７は、例えば、ＤＶＤメディア、ＨＤ－ＤＶＤメディア又はＢｌｕ－ｒａｙ（登録商標）メディア等である。また、リムーバブル記録媒体９２７は、コンパクトフラッシュ（登録商標）（ＣＦ：ＣｏｍｐａｃｔＦｌａｓｈ）、フラッシュメモリ又はＳＤメモリカード（Ｓｅｃｕｒｅ　Ｄｉｇｉｔａｌ　ｍｅｍｏｒｙ　ｃａｒｄ）等であってもよい。また、リムーバブル記録媒体９２７は、例えば、非接触型ＩＣチップを搭載したＩＣカード（Ｉｎｔｅｇｒａｔｅｄ　Ｃｉｒｃｕｉｔ　ｃａｒｄ）又は電子機器等であってもよい。 The drive 921 is a reader / writer for a recording medium, and is built in or externally attached to the information processing apparatus 900. The drive 921 reads out information recorded in a removable recording medium 927 such as a mounted magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, and outputs the information to the RAM 903. The drive 921 can also write a record on a removable recording medium 927 such as a mounted magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory. The removable recording medium 927 is, for example, a DVD medium, an HD-DVD medium, a Blu-ray (registered trademark) medium, or the like. In addition, the removable recording medium 927 may be Compact Flash (registered trademark) (CF: Compact Flash), a flash memory, an SD memory card (Secure Digital memory card), or the like. The removable recording medium 927 may be, for example, an IC card (Integrated Circuit card) equipped with a non-contact IC chip, an electronic device, or the like.
　接続ポート９２３は、情報処理装置９００に直接接続するためのポートである。接続ポート９２３の一例として、ＵＳＢ（Ｕｎｉｖｅｒｓａｌ　Ｓｅｒｉａｌ　Ｂｕｓ）ポート、ＩＥＥＥ１３９４ポート、ＳＣＳＩ（Ｓｍａｌｌ　Ｃｏｍｐｕｔｅｒ　Ｓｙｓｔｅｍ　Ｉｎｔｅｒｆａｃｅ）ポート等がある。接続ポート９２３の別の例として、ＲＳ－２３２Ｃポート、光オーディオ端子、ＨＤＭＩ（登録商標）（Ｈｉｇｈ－Ｄｅｆｉｎｉｔｉｏｎ　Ｍｕｌｔｉｍｅｄｉａ　Ｉｎｔｅｒｆａｃｅ）ポート等がある。この接続ポート９２３に外部接続機器９２９を接続することで、情報処理装置９００は、外部接続機器９２９から直接各種のデータを取得したり、外部接続機器９２９に各種のデータを提供したりする。 The connection port 923 is a port for direct connection to the information processing apparatus 900. Examples of the connection port 923 include a Universal Serial Bus (USB) port, an IEEE 1394 port, and a Small Computer System Interface (SCSI) port. As another example of the connection port 923, there are an RS-232C port, an optical audio terminal, a high-definition multimedia interface (HDMI (registered trademark)) port, and the like. By connecting the externally connected device 929 to the connection port 923, the information processing apparatus 900 acquires various data directly from the externally connected device 929 or provides various data to the externally connected device 929.
　通信装置９２５は、例えば、通信網（ネットワーク）９３１に接続するための通信デバイス等で構成された通信インタフェースである。通信装置９２５は、例えば、有線若しくは無線ＬＡＮ（Ｌｏｃａｌ　Ａｒｅａ　Ｎｅｔｗｏｒｋ）、Ｂｌｕｅｔｏｏｔｈ（登録商標）又はＷＵＳＢ（Ｗｉｒｅｌｅｓｓ　ＵＳＢ）用の通信カード等である。また、通信装置９２５は、光通信用のルータ、ＡＤＳＬ（Ａｓｙｍｍｅｔｒｉｃ　Ｄｉｇｉｔａｌ　Ｓｕｂｓｃｒｉｂｅｒ　Ｌｉｎｅ）用のルータ又は各種通信用のモデム等であってもよい。この通信装置９２５は、例えば、インターネットや他の通信機器との間で、例えばＴＣＰ／ＩＰ等の所定のプロトコルに則して信号等を送受信することができる。また、通信装置９２５に接続される通信網９３１は、有線又は無線によって接続されたネットワーク等により構成され、例えば、インターネット、家庭内ＬＡＮ、赤外線通信、ラジオ波通信又は衛星通信等であってもよい。例えば、図２に示すネットワーク通信部１１０や、図３に示す無線通信部２２０、ネットワーク通信部２３０、及び衛星信号受信部２５０は、通信装置９２５により実現され得る。 The communication device 925 is, for example, a communication interface configured of a communication device or the like for connecting to a communication network (network) 931. The communication device 925 is, for example, a communication card for a wired or wireless LAN (Local Area Network), Bluetooth (registered trademark) or WUSB (Wireless USB). The communication device 925 may be a router for optical communication, a router for Asymmetric Digital Subscriber Line (ADSL), a modem for various communications, or the like. The communication device 925 can transmit and receive signals and the like according to a predetermined protocol such as TCP / IP, for example, with the Internet or another communication device. In addition, the communication network 931 connected to the communication device 925 is configured by a network or the like connected by wire or wireless, and may be, for example, the Internet, home LAN, infrared communication, radio wave communication, satellite communication, etc. . For example, the network communication unit 110 shown in FIG. 2, the wireless communication unit 220, the network communication unit 230, and the satellite signal reception unit 250 shown in FIG.
　以上、本開示の実施形態に係るシステムを構成する情報処理装置９００の機能を実現可能なハードウェア構成の一例を示した。上記の各構成要素は、汎用的な部材を用いて構成されていてもよいし、各構成要素の機能に特化したハードウェアにより構成されていてもよい。従って、本実施形態を実施する時々の技術レベルに応じて、適宜、利用するハードウェア構成を変更することが可能である。なお、図１８では図示しないが、システムを構成する情報処理装置９００に対応する各種の構成を当然備える。 In the above, an example of the hardware configuration which can realize the function of the information processing apparatus 900 which configures the system according to the embodiment of the present disclosure has been shown. Each of the components described above may be configured using a general-purpose member, or may be configured by hardware specialized for the function of each component. Therefore, it is possible to change the hardware configuration to be used as appropriate according to the technical level of the time of carrying out the present embodiment. Although not illustrated in FIG. 18, naturally, various configurations corresponding to the information processing apparatus 900 configuring the system are provided.
　なお、上述のような本実施形態に係る情報処理システムを構成する情報処理装置９００の各機能を実現するためのコンピュータプログラムを作製し、パーソナルコンピュータ等に実装することが可能である。また、このようなコンピュータプログラムが格納された、コンピュータで読み取り可能な記録媒体も提供することができる。記録媒体は、例えば、磁気ディスク、光ディスク、光磁気ディスク、フラッシュメモリなどである。また、上記のコンピュータプログラムは、記録媒体を用いずに、例えばネットワークを介して配信してもよい。また、当該コンピュータプログラムを実行させるコンピュータの数は特に限定されない。例えば、当該コンピュータプログラムを、複数のコンピュータ（例えば、複数のサーバ等）が互いに連携して実行してもよい。 A computer program for realizing each function of the information processing apparatus 900 constituting the information processing system according to the present embodiment as described above can be prepared and implemented on a personal computer or the like. In addition, a computer readable recording medium in which such a computer program is stored can be provided. The recording medium is, for example, a magnetic disk, an optical disk, a magneto-optical disk, a flash memory or the like. In addition, the above computer program may be distributed via, for example, a network without using a recording medium. Further, the number of computers that execute the computer program is not particularly limited. For example, a plurality of computers (for example, a plurality of servers and the like) may execute the computer program in cooperation with each other.
　＜＜５．むすび＞＞
　以上、添付図面を参照しながら本開示の好適な実施形態について詳細に説明したが、本開示の技術的範囲はかかる例に限定されない。本開示の技術分野における通常の知識を有する者であれば、特許請求の範囲に記載された技術的思想の範疇内において、各種の変更例または修正例に想到し得ることは明らかであり、これらについても、当然に本開示の技術的範囲に属するものと了解される。 << 5. End >>
The preferred embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, but the technical scope of the present disclosure is not limited to such examples. It is obvious that those skilled in the art of the present disclosure can conceive of various modifications or alterations within the scope of the technical idea described in the claims. It is understood that also of course falls within the technical scope of the present disclosure.
　また、本明細書に記載された効果は、あくまで説明的または例示的なものであって限定的ではない。つまり、本開示に係る技術は、上記の効果とともに、または上記の効果に代えて、本明細書の記載から当業者には明らかな他の効果を奏しうる。 In addition, the effects described in the present specification are merely illustrative or exemplary, and not limiting. That is, the technology according to the present disclosure can exhibit other effects apparent to those skilled in the art from the description of the present specification, in addition to or instead of the effects described above.
　また、本明細書に記載された効果は、あくまで説明的または例示的なものであって限定的ではない。つまり、本開示に係る技術は、上記の効果とともに、または上記の効果に代えて、本明細書の記載から当業者には明らかな他の効果を奏しうる。 In addition, the effects described in the present specification are merely illustrative or exemplary, and not limiting. That is, the technology according to the present disclosure can exhibit other effects apparent to those skilled in the art from the description of the present specification, in addition to or instead of the effects described above.
　なお、以下のような構成も本開示の技術的範囲に属する。
（１）
　端末装置から複数の基地局それぞれに無線通信を介して送信されたフレーム情報に関連する所定の制御情報を、当該複数の基地局それぞれから取得する取得部と、
　前記複数の基地局それぞれから取得された前記制御情報に基づき、前記フレーム情報に含まれるペイロードを取得する前記基地局を特定する処理部と、
　を備える、情報処理装置。
（２）
　前記処理部は、前記複数の基地局それぞれにおける前記端末装置からの受信信号の強度に応じて、前記ペイロードを取得する前記基地局を、当該複数の基地局から特定する、前記（１）に記載の情報処理装置。
（３）
　前記処理部は、前記複数の基地局それぞれから取得された、前記フレーム情報に含まれ、かつ前記ペイロードとは異なる所定の制御情報に基づき、前記端末装置の位置を推定する、前記（１）または（２）に記載の情報処理装置。
（４）
　前記取得部は、前記端末装置の位置が推定された後に、特定された前記基地局から前記ペイロードを取得する、前記（３）に記載の情報処理装置。
（５）
　前記フレーム情報に関連する所定の制御情報は、前記ペイロードとは異なる所定の制御情報である、前記（４）に記載の情報処理装置。
（６）
　前記取得部は、前記端末装置の位置が推定される前に、特定された前記基地局から前記フレーム情報を取得することで、当該基地局から前記ペイロードを取得する、前記（３）に記載の情報処理装置。
（７）
　前記フレーム情報に関連する所定の制御情報は、前記基地局による前記フレーム情報の受信状況に応じた情報である、前記（６）に記載の情報処理装置。
（８）
　前記取得部は、前記ペイロードとは異なる所定の制御情報を取得した前記基地局の数が閾値未満の場合に、前記複数の基地局には含まれない他の基地局から当該制御情報を取得し、
　前記処理部は、前記複数の基地局のそれぞれと、前記他の基地局と、により取得された当該制御情報に基づき、前記端末装置の位置を推定する、
　前記（３）～（７）のいずれか一項に記載の情報処理装置。
（９）
　端末装置から無線通信を介してフレーム情報を取得する取得部と、
　取得された前記フレーム情報に関連する所定の制御情報が、所定のサーバに送信されるように制御する制御部と、
　を備え、
　前記制御部は、前記サーバからの要求に応じて、前記フレーム情報に含まれるペイロードが当該サーバに送信されるように制御する、
　基地局。
（１０）
　前記制御部は、
　前記制御情報として、前記フレーム情報に含まれ、かつ前記ペイロードとは異なる所定の制御情報が前記サーバに送信されるように制御し、
　当該制御情報の送信後に、前記サーバからの要求に応じて、前記ペイロードが当該サーバに送信されるように制御する、
　前記（９）に記載の基地局。
（１１）
　前記制御部は、前記サーバからの要求に応じて、前記フレーム情報と、当該フレーム情報に含まれる前記ペイロードとは異なる所定の制御情報と、のうちのいずれかが当該サーバに送信されるように制御する、前記（９）に記載の基地局。
（１２）
　無線通信を介して１以上の基地局にフレーム情報が繰り返し送信されるように制御する制御部と、
　バッテリーの状態に関する情報を取得する取得部と、
　を備え、
　前記制御部は、前記バッテリーの状態と、前記無線通信を介して前記フレーム情報を送信可能な前記基地局の数と、に応じて、１以上の前記基地局に対して所定の期間内に前記フレーム情報が送信される回数を制御する、
　端末装置。
（１３）
　前記バッテリーの状態に関する情報は、当該バッテリーの電力の残量に関する情報を含み、
　前記制御部は、前記バッテリーの電力の残量が少ないほど、前記所定の期間内に前記フレーム情報が送信される回数を制限する、
　前記（１２）に記載の端末装置。
（１４）
　前記制御部は、前記フレーム情報を送信可能な前記基地局の数が閾値未満の場合に、前記フレーム情報が送信される回数の制限を抑制する、前記（１２）または（１３）に記載の端末装置。
（１５）
　前記フレーム情報を送信可能な前記基地局の数は、前記端末装置の位置の検出結果に応じて特定される、前記（１２）～（１４）のいずれか一項に記載の端末装置。
（１６）
　端末装置から無線通信を介して１以上の基地局に繰り返し送信されるフレーム情報を、当該１以上の基地局のうちの少なくとも一部の基地局から取得する取得部と、
　前記少なくとも一部の基地局から取得されたフレーム情報からデータを復調する処理部と、
　を備え、
　所定の期間内に前記端末装置から前記フレーム情報が送信される回数に応じた数の前記基地局から、当該フレーム情報が取得される、
　情報処理装置。
（１７）
　前記所定の期間内に前記端末装置から前記フレーム情報が送信される回数が少ないほど、当該フレーム情報の取得元となる前記基地局の数が多くなる、前記（１６）に記載の情報処理装置。
（１８）
　コンピュータが、
　端末装置から複数の基地局それぞれに無線通信を介して送信されたフレーム情報に関連する所定の制御情報を、当該複数の基地局それぞれから取得することと、
　前記複数の基地局それぞれから取得された前記制御情報に基づき、前記フレーム情報に含まれるペイロードを取得する前記基地局を特定することと、
　を含む、情報処理方法。
（１９）
　コンピュータが、
　端末装置から無線通信を介してフレーム情報を取得することと、
　取得された前記フレーム情報に関連する所定の制御情報が、所定のサーバに送信されるように制御することと、
　前記サーバからの要求に応じて、前記フレーム情報に含まれるペイロードが当該サーバに送信されるように制御することと、
　を含む、情報処理方法。
（２０）
　コンピュータが、
　無線通信を介して１以上の基地局にフレーム情報が繰り返し送信されるように制御することと、
　バッテリーの状態に関する情報を取得することと、
　前記バッテリーの状態と、前記無線通信を介して前記フレーム情報を送信可能な前記基地局の数と、に応じて、１以上の前記基地局に対して所定の期間内に前記フレーム情報が送信される回数を制御することと、
　を含む、情報処理方法。
（２１）
　コンピュータが、
　端末装置から無線通信を介して１以上の基地局に繰り返し送信されるフレーム情報を、当該１以上の基地局のうちの少なくとも一部の基地局から取得することと、
　前記少なくとも一部の基地局から取得されたフレーム情報からデータを復調することと、
　を含み、
　所定の期間内に前記端末装置から前記フレーム情報が送信される回数に応じた数の前記基地局から、当該フレーム情報が取得される、
　情報処理方法。 The following configurations are also within the technical scope of the present disclosure.
(1)
An acquisition unit for acquiring predetermined control information related to frame information transmitted from the terminal device to each of the plurality of base stations through wireless communication from each of the plurality of base stations;
A processing unit that specifies the base station that acquires the payload included in the frame information based on the control information acquired from each of the plurality of base stations;
An information processing apparatus comprising:
(2)
The processor according to (1), wherein the base station for acquiring the payload is specified from the plurality of base stations according to the strength of the signal received from the terminal device in each of the plurality of base stations. Information processing equipment.
(3)
The processing unit estimates the position of the terminal apparatus based on predetermined control information which is included in the frame information and is different from the payload, which is obtained from each of the plurality of base stations. The information processing apparatus according to (2).
(4)
The information processing apparatus according to (3), wherein the acquisition unit acquires the payload from the identified base station after the position of the terminal apparatus is estimated.
(5)
The information processing apparatus according to (4), wherein the predetermined control information related to the frame information is predetermined control information different from the payload.
(6)
The acquisition unit is configured to acquire the payload from the base station by acquiring the frame information from the identified base station before the position of the terminal device is estimated. Information processing device.
(7)
The information processing apparatus according to (6), wherein the predetermined control information related to the frame information is information according to the reception status of the frame information by the base station.
(8)
The acquisition unit acquires the control information from another base station not included in the plurality of base stations when the number of the base stations that acquired predetermined control information different from the payload is less than a threshold. ,
The processing unit estimates the position of the terminal apparatus based on the control information acquired by each of the plurality of base stations and the other base station.
The information processing apparatus according to any one of (3) to (7).
(9)
An acquisition unit that acquires frame information from a terminal device via wireless communication;
A control unit configured to control predetermined control information related to the acquired frame information to be transmitted to a predetermined server;
Equipped with
The control unit controls, in response to a request from the server, a payload included in the frame information to be transmitted to the server.
base station.
(10)
The control unit
The control information is controlled to be transmitted to the server as predetermined control information which is included in the frame information and which is different from the payload.
After transmission of the control information, in response to a request from the server, control is performed such that the payload is transmitted to the server.
The base station according to (9).
(11)
The control unit is configured to transmit, to the server, one of the frame information and predetermined control information different from the payload included in the frame information in response to a request from the server. The base station according to (9), which controls.
(12)
A control unit that controls frame information to be repeatedly transmitted to one or more base stations via wireless communication;
An acquisition unit that acquires information on the state of the battery;
Equipped with
The control unit performs the process within a predetermined period for one or more of the base stations according to the state of the battery and the number of the base stations capable of transmitting the frame information via the wireless communication. Control the number of times frame information is sent,
Terminal equipment.
(13)
The information on the state of the battery includes information on the remaining amount of power of the battery,
The control unit limits the number of times the frame information is transmitted within the predetermined period as the remaining amount of power of the battery is smaller.
The terminal device according to (12).
(14)
The terminal according to (12) or (13), wherein, when the number of base stations capable of transmitting the frame information is less than a threshold, the control unit suppresses restriction on the number of times the frame information is transmitted. apparatus.
(15)
The terminal device according to any one of (12) to (14), wherein the number of the base stations capable of transmitting the frame information is specified according to the detection result of the position of the terminal device.
(16)
An acquisition unit that acquires frame information repeatedly transmitted from the terminal device to one or more base stations via wireless communication from at least a part of the one or more base stations;
A processing unit that demodulates data from frame information acquired from the at least some of the base stations;
Equipped with
The frame information is acquired from the number of base stations according to the number of times the frame information is transmitted from the terminal device within a predetermined period.
Information processing device.
(17)
The information processing apparatus according to (16), wherein the number of base stations serving as an acquisition source of the frame information increases as the number of times the frame information is transmitted from the terminal device within the predetermined period decreases.
(18)
The computer is
Obtaining predetermined control information related to frame information transmitted from the terminal device to each of the plurality of base stations via wireless communication from each of the plurality of base stations;
Identifying the base station for acquiring the payload included in the frame information based on the control information acquired from each of the plurality of base stations;
Information processing methods, including:
(19)
The computer is
Obtaining frame information from a terminal device via wireless communication;
Controlling that predetermined control information related to the acquired frame information is transmitted to a predetermined server;
Controlling that a payload included in the frame information is transmitted to the server in response to a request from the server;
Information processing methods, including:
(20)
The computer is
Controlling frame information to be repeatedly transmitted to one or more base stations via wireless communication;
Obtaining information about the state of the battery;
The frame information is transmitted within a predetermined period to one or more of the base stations according to the state of the battery and the number of the base stations capable of transmitting the frame information through the wireless communication. Controlling the number of
Information processing methods, including:
(21)
The computer is
Obtaining frame information repeatedly transmitted from the terminal device to one or more base stations via wireless communication from at least a part of the one or more base stations;
Demodulating data from frame information obtained from the at least some base stations;
Including
The frame information is acquired from the number of base stations according to the number of times the frame information is transmitted from the terminal device within a predetermined period.
Information processing method.
　１、１Ａ、１Ｂ　通信システム
　１００　サーバ
　１１０　ネットワーク通信部
　１３０　記憶部
　１５０　処理部
　１５１　通信制御部
　１５３　情報取得部
　１５５　判定部
　１５７　通知部
　２００　基地局
　２１０　アンテナ部
　２２０　無線通信部
　２３０　ネットワーク通信部
　２４０　アンテナ部
　２５０　衛星信号受信部
　２６０　記憶部
　２７０　処理部
　２７１　通信制御部
　２７３　情報取得部
　２７５　通知部
　３００　端末装置
　３１０　アンテナ部
　３２０　無線通信部
　３４０　アンテナ部
　３５０　衛星信号受信部
　３６０　記憶部
　３７０　処理部
　３７１　通信制御部
　３７３　情報取得部
　３７５　判定部
　３７７　通知部
　４００　クライアント
　５００　ＧＰＳ衛星
　６００　ローミングサーバ 1, 1A, 1B communication system 100 server 110 network communication unit 130 storage unit 150 processing unit 151 communication control unit 153 information acquisition unit 155 determination unit 157 notification unit 200 base station 210 antenna unit 220 wireless communication unit 230 network communication unit 240 antenna unit 250 satellite signal reception unit 260 storage unit 270 processing unit 271 communication control unit 273 information acquisition unit 275 notification unit 300 terminal device 310 antenna unit 320 wireless communication unit 340 antenna unit 350 satellite signal reception unit 360 storage unit 370 processing unit 371 communication control unit 373 information acquisition unit 375 determination unit 377 notification unit 400 client 500 GPS satellite 600 roaming server

Claims (21)

  1. 　端末装置から複数の基地局それぞれに無線通信を介して送信されたフレーム情報に関連する所定の制御情報を、当該複数の基地局それぞれから取得する取得部と、
    　前記複数の基地局それぞれから取得された前記制御情報に基づき、前記フレーム情報に含まれるペイロードを取得する前記基地局を特定する処理部と、
    　を備える、情報処理装置。     An acquisition unit for acquiring predetermined control information related to frame information transmitted from the terminal device to each of the plurality of base stations through wireless communication from each of the plurality of base stations;
    A processing unit that specifies the base station that acquires the payload included in the frame information based on the control information acquired from each of the plurality of base stations;
    An information processing apparatus comprising:
  2. 　前記処理部は、前記複数の基地局それぞれにおける前記端末装置からの受信信号の強度に応じて、前記ペイロードを取得する前記基地局を、当該複数の基地局から特定する、請求項１に記載の情報処理装置。 The processor according to claim 1, wherein the processing unit identifies, from the plurality of base stations, the base station that acquires the payload, according to the strength of a signal received from the terminal device in each of the plurality of base stations. Information processing device.
  3. 　前記処理部は、前記複数の基地局それぞれから取得された、前記フレーム情報に含まれ、かつ前記ペイロードとは異なる所定の制御情報に基づき、前記端末装置の位置を推定する、請求項１に記載の情報処理装置。 The processor according to claim 1, wherein the processing unit estimates the position of the terminal apparatus based on predetermined control information which is included in the frame information and is different from the payload, which is obtained from each of the plurality of base stations. Information processing equipment.
  4. 　前記取得部は、前記端末装置の位置が推定された後に、特定された前記基地局から前記ペイロードを取得する、請求項３に記載の情報処理装置。 The information processing apparatus according to claim 3, wherein the acquisition unit acquires the payload from the identified base station after the position of the terminal apparatus is estimated.
  5. 　前記フレーム情報に関連する所定の制御情報は、前記ペイロードとは異なる所定の制御情報である、請求項４に記載の情報処理装置。 The information processing apparatus according to claim 4, wherein the predetermined control information related to the frame information is predetermined control information different from the payload.
  6. 　前記取得部は、前記端末装置の位置が推定される前に、特定された前記基地局から前記フレーム情報を取得することで、当該基地局から前記ペイロードを取得する、請求項３に記載の情報処理装置。 The information according to claim 3, wherein the acquisition unit acquires the payload from the base station by acquiring the frame information from the identified base station before the position of the terminal device is estimated. Processing unit.
  7. 　前記フレーム情報に関連する所定の制御情報は、前記基地局による前記フレーム情報の受信状況に応じた情報である、請求項６に記載の情報処理装置。 The information processing apparatus according to claim 6, wherein the predetermined control information related to the frame information is information according to a reception status of the frame information by the base station.
  8. 　前記取得部は、前記ペイロードとは異なる所定の制御情報を取得した前記基地局の数が閾値未満の場合に、前記複数の基地局には含まれない他の基地局から当該制御情報を取得し、
    　前記処理部は、前記複数の基地局のそれぞれと、前記他の基地局と、により取得された当該制御情報に基づき、前記端末装置の位置を推定する、
    　請求項３に記載の情報処理装置。     The acquisition unit acquires the control information from another base station not included in the plurality of base stations when the number of the base stations that acquired predetermined control information different from the payload is less than a threshold. ,
    The processing unit estimates the position of the terminal apparatus based on the control information acquired by each of the plurality of base stations and the other base station.
    The information processing apparatus according to claim 3.
  9. 　端末装置から無線通信を介してフレーム情報を取得する取得部と、
    　取得された前記フレーム情報に関連する所定の制御情報が、所定のサーバに送信されるように制御する制御部と、
    　を備え、
    　前記制御部は、前記サーバからの要求に応じて、前記フレーム情報に含まれるペイロードが当該サーバに送信されるように制御する、
    　基地局。     An acquisition unit that acquires frame information from a terminal device via wireless communication;
    A control unit configured to control predetermined control information related to the acquired frame information to be transmitted to a predetermined server;
    Equipped with
    The control unit controls, in response to a request from the server, a payload included in the frame information to be transmitted to the server.
    base station.
  10. 　前記制御部は、
    　前記制御情報として、前記フレーム情報に含まれ、かつ前記ペイロードとは異なる所定の制御情報が前記サーバに送信されるように制御し、
    　当該制御情報の送信後に、前記サーバからの要求に応じて、前記ペイロードが当該サーバに送信されるように制御する、
    　請求項９に記載の基地局。     The control unit
    The control information is controlled to be transmitted to the server as predetermined control information which is included in the frame information and which is different from the payload.
    After transmission of the control information, in response to a request from the server, control is performed such that the payload is transmitted to the server.
    The base station according to claim 9.
  11. 　前記制御部は、前記サーバからの要求に応じて、前記フレーム情報と、当該フレーム情報に含まれる前記ペイロードとは異なる所定の制御情報と、のうちのいずれかが当該サーバに送信されるように制御する、請求項９に記載の基地局。 The control unit is configured to transmit, to the server, one of the frame information and predetermined control information different from the payload included in the frame information in response to a request from the server. The base station according to claim 9, which controls.
  12. 　無線通信を介して１以上の基地局にフレーム情報が繰り返し送信されるように制御する制御部と、
    　バッテリーの状態に関する情報を取得する取得部と、
    　を備え、
    　前記制御部は、前記バッテリーの状態と、前記無線通信を介して前記フレーム情報を送信可能な前記基地局の数と、に応じて、１以上の前記基地局に対して所定の期間内に前記フレーム情報が送信される回数を制御する、
    　端末装置。     A control unit that controls frame information to be repeatedly transmitted to one or more base stations via wireless communication;
    An acquisition unit that acquires information on the state of the battery;
    Equipped with
    The control unit performs the process within a predetermined period for one or more of the base stations according to the state of the battery and the number of the base stations capable of transmitting the frame information via the wireless communication. Control the number of times frame information is sent,
    Terminal equipment.
  13. 　前記バッテリーの状態に関する情報は、当該バッテリーの電力の残量に関する情報を含み、
    　前記制御部は、前記バッテリーの電力の残量が少ないほど、前記所定の期間内に前記フレーム情報が送信される回数を制限する、
    　請求項１２に記載の端末装置。     The information on the state of the battery includes information on the remaining amount of power of the battery,
    The control unit limits the number of times the frame information is transmitted within the predetermined period as the remaining amount of power of the battery is smaller.
    The terminal device according to claim 12.
  14. 　前記制御部は、前記フレーム情報を送信可能な前記基地局の数が閾値未満の場合に、前記フレーム情報が送信される回数の制限を抑制する、請求項１２に記載の端末装置。 The terminal device according to claim 12, wherein the control unit suppresses a limit on the number of times the frame information is transmitted when the number of the base stations capable of transmitting the frame information is less than a threshold.
  15. 　前記フレーム情報を送信可能な前記基地局の数は、前記端末装置の位置の検出結果に応じて特定される、請求項１２に記載の端末装置。 The terminal device according to claim 12, wherein the number of the base stations capable of transmitting the frame information is specified according to the detection result of the position of the terminal device.
  16. 　端末装置から無線通信を介して１以上の基地局に繰り返し送信されるフレーム情報を、当該１以上の基地局のうちの少なくとも一部の基地局から取得する取得部と、
    　前記少なくとも一部の基地局から取得されたフレーム情報からデータを復調する処理部と、
    　を備え、
    　所定の期間内に前記端末装置から前記フレーム情報が送信される回数に応じた数の前記基地局から、当該フレーム情報が取得される、
    　情報処理装置。     An acquisition unit that acquires frame information repeatedly transmitted from the terminal device to one or more base stations via wireless communication from at least a part of the one or more base stations;
    A processing unit that demodulates data from frame information acquired from the at least some of the base stations;
    Equipped with
    The frame information is acquired from the number of base stations according to the number of times the frame information is transmitted from the terminal device within a predetermined period.
    Information processing device.
  17. 　前記所定の期間内に前記端末装置から前記フレーム情報が送信される回数が少ないほど、当該フレーム情報の取得元となる前記基地局の数が多くなる、請求項１６に記載の情報処理装置。 17. The information processing apparatus according to claim 16, wherein the number of base stations serving as an acquisition source of the frame information increases as the number of times the frame information is transmitted from the terminal device within the predetermined period decreases.
  18. 　コンピュータが、
    　端末装置から複数の基地局それぞれに無線通信を介して送信されたフレーム情報に関連する所定の制御情報を、当該複数の基地局それぞれから取得することと、
    　前記複数の基地局それぞれから取得された前記制御情報に基づき、前記フレーム情報に含まれるペイロードを取得する前記基地局を特定することと、
    　を含む、情報処理方法。     The computer is
    Obtaining predetermined control information related to frame information transmitted from the terminal device to each of the plurality of base stations via wireless communication from each of the plurality of base stations;
    Identifying the base station for acquiring the payload included in the frame information based on the control information acquired from each of the plurality of base stations;
    Information processing methods, including:
  19. 　コンピュータが、
    　端末装置から無線通信を介してフレーム情報を取得することと、
    　取得された前記フレーム情報に関連する所定の制御情報が、所定のサーバに送信されるように制御することと、
    　前記サーバからの要求に応じて、前記フレーム情報に含まれるペイロードが当該サーバに送信されるように制御することと、
    　を含む、情報処理方法。     The computer is
    Obtaining frame information from a terminal device via wireless communication;
    Controlling that predetermined control information related to the acquired frame information is transmitted to a predetermined server;
    Controlling that a payload included in the frame information is transmitted to the server in response to a request from the server;
    Information processing methods, including:
  20. 　コンピュータが、
    　無線通信を介して１以上の基地局にフレーム情報が繰り返し送信されるように制御することと、
    　バッテリーの状態に関する情報を取得することと、
    　前記バッテリーの状態と、前記無線通信を介して前記フレーム情報を送信可能な前記基地局の数と、に応じて、１以上の前記基地局に対して所定の期間内に前記フレーム情報が送信される回数を制御することと、
    　を含む、情報処理方法。     The computer is
    Controlling frame information to be repeatedly transmitted to one or more base stations via wireless communication;
    Obtaining information about the state of the battery;
    The frame information is transmitted within a predetermined period to one or more of the base stations according to the state of the battery and the number of the base stations capable of transmitting the frame information through the wireless communication. Controlling the number of
    Information processing methods, including:
  21. 　コンピュータが、
    　端末装置から無線通信を介して１以上の基地局に繰り返し送信されるフレーム情報を、当該１以上の基地局のうちの少なくとも一部の基地局から取得することと、
    　前記少なくとも一部の基地局から取得されたフレーム情報からデータを復調することと、
    　を含み、
    　所定の期間内に前記端末装置から前記フレーム情報が送信される回数に応じた数の前記基地局から、当該フレーム情報が取得される、
    　情報処理方法。     The computer is
    Obtaining frame information repeatedly transmitted from the terminal device to one or more base stations via wireless communication from at least a part of the one or more base stations;
    Demodulating data from frame information obtained from the at least some base stations;
    Including
    The frame information is acquired from the number of base stations according to the number of times the frame information is transmitted from the terminal device within a predetermined period.
    Information processing method.
PCT/JP2018/025197 2017-08-21 2018-07-03 Information processing device, base station, terminal device, and information processing method WO2019039096A1 (en)

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