WO2011118100A1 - Base station apparatus - Google Patents
Base station apparatus Download PDFInfo
- Publication number
- WO2011118100A1 WO2011118100A1 PCT/JP2010/072657 JP2010072657W WO2011118100A1 WO 2011118100 A1 WO2011118100 A1 WO 2011118100A1 JP 2010072657 W JP2010072657 W JP 2010072657W WO 2011118100 A1 WO2011118100 A1 WO 2011118100A1
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- WIPO (PCT)
- Prior art keywords
- base station
- unit
- remaining amount
- beacon signal
- communication
- Prior art date
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- 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
- H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
- H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/04—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources
- H04W40/10—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources based on available power or energy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/20—Interfaces between hierarchically similar devices between access points
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- 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 invention relates to communication technology, and more particularly to base station devices connected by a wireless network.
- a solar power generation apparatus is applied to various systems. For example, in a security monitoring system with a camera, electric power generated by a solar power generator is charged in a storage battery, and the electric power is used as a power source for a network camera and a projector.
- the network camera is connected to the Internet via a portable telephone line.
- e-mail for example, see Patent Document 1.
- a wireless communication system such as a wireless LAN (Local Area Network) is suitable for omitting a cable for transmitting a control signal. That is, a base station device and a terminal device are installed in the street light. In order to efficiently execute communication in the wireless communication system, for example, base station devices and terminal devices are arranged in a hierarchy.
- the base station device suitable for the terminal device is, for example, a base station device with a large remaining amount of storage battery or a base station device included in a route with a small number of hops of base station communication.
- some information should be transmitted from the base station apparatus to the terminal apparatus.
- fewer changes to the signal format defined in the wireless LAN are preferable.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a technique for notifying a terminal device of information related to a base station device while reducing changes in the signal format defined in the communication system. is there.
- a base station apparatus is a base station apparatus driven by a storage battery, and communicates with other base station apparatuses through inter-base station communication and also communicates with terminal apparatuses.
- a communication unit, a setting unit that sets a second SSID different from the first SSID for identifying the base station device based on the remaining amount of the storage battery, a second SSID set in the setting unit, and the base A beacon signal including the MAC address assigned to the station device and information to be notified to the terminal device is generated, and a beacon signal generated by the generating unit is received, and a beacon signal generated by the generating unit is received.
- the generation unit does not include the first SSID in the beacon signal, and the terminal device that is the target of the connection process in the processing unit recognizes the correspondence between the MAC address and the first SSID in advance, and from the MAC address included in the beacon signal
- the first SSID of the base station apparatus is specified.
- This device is a base station device driven by a storage battery, communicates with other base station devices by inter-base station communication, and communicates with a terminal device by inter-base station communication at the communication unit.
- a setting unit that sets a second SSID different from the first SSID for identifying the base station device, a second SSID set by the setting unit, and the base station device
- a generating unit that generates a beacon signal including the assigned MAC address and information to be notified to the terminal device, and notifies the communication unit of the beacon signal; and a terminal device that receives the beacon signal generated by the generating unit;
- a processing unit that executes a connection process using the first SSID.
- the generation unit does not include the first SSID in the beacon signal, and the terminal device that is the target of the connection process in the processing unit recognizes the correspondence between the MAC address and the first SSID in advance, and from the MAC address included in the beacon signal
- the first SSID of the base station apparatus is specified.
- Still another aspect of the present invention is also a base station apparatus.
- This device is a base station device driven by a storage battery, communicates with other base station devices by inter-base station communication, and communicates with a terminal device by inter-base station communication at the communication unit.
- An acquisition unit that acquires information on the remaining amount of the storage battery that drives each other base station device included in the formed route, and a remaining amount in the route is derived based on the information acquired in the acquisition unit.
- Still another aspect of the present invention is also a base station apparatus.
- This device is a base station device driven by a storage battery, and communicates with other base station devices through inter-base station communication, and also acquires a communication unit capable of communicating with a terminal device and information on the remaining amount of the storage battery.
- An acquisition unit and a determination unit that determines a notification period of the beacon signal based on information on the remaining amount acquired by the acquisition unit.
- reports the beacon signal containing the information which should be alert
- the present invention it is possible to notify the terminal device of information related to the base station device while reducing changes in the signal format defined in the communication system.
- FIGS. 2A and 2B are diagrams showing the configuration of the illumination device of FIG. It is a figure which shows the structure of the control apparatus of FIG. It is a figure which shows the data structure of the table memorize
- FIG. It is a sequence diagram which shows the communication procedure by the communication system of FIG. It is a figure which shows the structure of the base station apparatus which concerns on the modification of this invention. It is a figure which shows the structure of the base station apparatus which concerns on another modification of this invention. It is a figure which shows the data structure of the table memorize
- Embodiments of the present invention relate to an illumination system including a plurality of base station devices and a plurality of terminal devices.
- the plurality of base station apparatuses perform inter-base station communication with each other, and each base station apparatus connects terminal apparatuses.
- the base station apparatus and the terminal apparatus are connected by, for example, a wireless LAN.
- each of the base station device and the terminal device is installed in a lighting device connected to the solar power generation device.
- the lighting device may have an imaging function.
- a control device for controlling the lighting system is connected to one of the base station devices.
- the terminal device is connected to the control device via a plurality of base station devices.
- a control apparatus receives the information regarding the residual amount of the storage battery of an illuminating device from a terminal device etc. In addition, the control device transmits a signal for instructing lighting (hereinafter, referred to as “lighting instruction”) to the terminal device or the like.
- the base station device executes communication between base stations and also communicates with the terminal device. Therefore, the traffic in the base station device tends to increase, and the power consumption of the storage battery tends to increase.
- the terminal device or base station device connected to the control device via the base station device communicates with the control device. become unable. As a result, control of each lighting device by the control device is not performed.
- the terminal device is preferably connected to a base station device with a large remaining battery capacity.
- the terminal device and the control device are connected by communication between base stations, there is a possibility that a plurality of base station devices are included in the path of communication between base stations. Therefore, not only the remaining amount in the base station device to which the terminal device is directly connected, but also the remaining amount in a plurality of base station devices included in the route (hereinafter referred to as “remaining route amount”) should be considered.
- the terminal device it is preferable for the terminal device to be able to receive information on the remaining amount from the base station device in order to select the base station device to be connected.
- a new signal is not defined in order to notify information regarding the remaining amount.
- the base station device specifies a route to the control device and obtains information regarding the remaining amounts of the plurality of base station devices included in the route.
- the base station apparatus selects the minimum remaining amount and sets it as the remaining amount of the route.
- the base station apparatus determines the notification period of the beacon signal according to the remaining amount of the route. For example, if the remaining amount of the route becomes small, the notification cycle is lengthened.
- the terminal device recognizes the presence of the base station device by receiving the beacon signal, and requests connection to the base station device. Since the notification frequency of a beacon signal from a base station apparatus with a large remaining amount of a path increases, the terminal apparatus can recognize such a base station apparatus at an early stage. As a result, the terminal device easily requests connection to such a base station device.
- FIG. 1 shows an outline of a lighting system 100 according to an embodiment of the present invention.
- the illumination system 100 includes a first terminal device 12a, a second terminal device 12b, a third terminal device 12c, a fourth terminal device 12d, an Nth terminal device 12n, and a base station device 14 collectively referred to as a control device 10 and a terminal device 12.
- the control device 10 includes an interface capable of receiving instructions from the user, generates information corresponding to the received instructions (hereinafter referred to as “instruction information”), and outputs the generated information to the entire lighting system 100. . Therefore, the output of the instruction information corresponds to notification.
- An example of the instruction is an instruction for lighting a lighting device 16 described later, and an example of the generated instruction information is information indicating an instruction to turn on the lighting device 16. This corresponds to the lighting instruction described above.
- the control device 10 is configured by a PC, for example.
- the control device 10 collects information regarding each lighting device 16 via the terminal device 12 and the base station device 14.
- the information regarding each lighting device 16 is, for example, information about the remaining capacity of the storage battery of the lighting device 16.
- the terminal device 12 corresponds to a wireless LAN terminal device
- the base station device 14 corresponds to a wireless LAN base station device.
- a plurality of base station apparatuses 14 perform inter-base station communication, and each of the plurality of terminal apparatuses 12 is connected to one of the base station apparatuses 14.
- the (M + 1) th base station apparatus 14m + 1 is connected to the control apparatus 10 and receives instruction information from the control apparatus 10.
- the (M + 1) th base station apparatus 14m + 1 transmits a packet signal including the instruction information to another one of the plurality of base station apparatuses 14, for example, the third base station apparatus 14c.
- the terminal device 12 may be connected to the control device 10 instead of the base station device 14.
- 3rd base station apparatus 14c transfers a packet signal to the other base station apparatus 14 using communication between base stations.
- the third base station device 14c also transmits a packet signal to the directly connected terminal device 12, for example, the fourth terminal device 12d. Further, the third base station apparatus 14c controls the lighting apparatus 16 described later according to the content of the instruction information included in the packet signal.
- Other base station apparatuses 14 operate in the same manner.
- the first terminal apparatus 12a to the Nth terminal apparatus 12n receive the packet signal from the base station apparatus 14. These terminal devices 12 also control a lighting device 16 to be described later according to the content of the instruction information included in the packet signal.
- the lighting device 16 includes a solar power generation device, and stores the generated power in a storage battery. Moreover, the illuminating device 16 turns on illumination with the charged electric power.
- the illumination device 16 is connected to the terminal device 12 or the base station device 14, and turns on or off the illumination based on an instruction from the terminal device 12 or the base station device 14.
- the illumination device 16 includes an imaging device, and may capture moving images and still images (hereinafter collectively referred to as “images”). Note that the terminal device 12 and the base station device 14 are also driven by the power charged in the storage battery of the lighting device 16.
- a combination of one of the terminal device 12 and the base station device 14 and the lighting device 16 corresponds to the street lamp described above.
- the terminal device 12 and the base station device 14 transmit information and images related to the remaining amount of storage battery in the lighting device 16 in a packet signal. These packet signals are transferred so as to follow the reverse path to the packet signal including the instruction information, and are received by the control device 10. As a result, the control device 10 can manage information regarding the remaining amount of the storage battery in each lighting device 16. In addition, the control device 10 can acquire an image captured by each lighting device 16.
- the lighting device 16 includes a solar panel 20, a storage battery 22, a lighting unit 24, an imaging device 26, and a control unit 28.
- the solar panel 20 corresponds to the above-described solar power generation device, and generates power upon receiving sunlight.
- the storage battery 22 stores the electric power generated in the solar panel 20.
- the storage battery 22 supplies power to the entire lighting device 16 and also supplies power to the connected terminal device 12 or base station device 14. Since a well-known technique should just be used for the solar panel 20 and the storage battery 22, description is abbreviate
- the illumination unit 24 is turned on or off based on an instruction from the control unit 28. It may blink.
- the control unit 28 receives instructions to turn on and off the illumination unit 24 from the terminal device 12 and the base station device 14 (not shown).
- the control unit 28 controls the operation of the illumination unit 24 according to the received instruction.
- the control unit 28 acquires the amount of power generated by the solar panel 20 and the remaining amount of the storage battery 22, and reports information related to the remaining amount to the terminal device 12 and the base station device 14 (not shown).
- the control unit 28 may periodically acquire the power generation amount or the remaining amount, or may acquire the power generation amount or the remaining amount according to an instruction from the terminal device 12 or the base station device 14 (not shown). Good.
- the imaging device 26 captures an image.
- the image is acquired as digital data.
- the imaging device 26 may periodically perform imaging, or may perform imaging in response to an instruction from the terminal device 12 or the base station device 14 (not shown).
- the imaging device 26 may output an image to the terminal device 12 and the base station device 14 (not shown) via the control unit 28, or may store the image in a built-in storage medium.
- the imaging device 26 may be omitted from the configuration in FIG. Thereby, the structure of the illuminating device 16 becomes simple.
- This configuration can be realized in terms of hardware by a CPU, memory, or other LSI of any computer, and in terms of software, it is realized by a program having a communication function loaded in the memory. Describes functional blocks realized by collaboration. Accordingly, those skilled in the art will understand that these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof.
- FIG. 3 shows the configuration of the control device 10.
- the control device 10 includes a communication unit 30, a management unit 32, an instruction unit 36, a storage unit 38, a collection unit 40, and a control unit 42.
- the communication unit 30 receives a packet signal generated by an instruction unit 36 described later.
- the communication unit 30 is connected to the (M + 1) th base station apparatus 14m + 1 in FIG. 1 via a cable or a wireless LAN, and transmits a packet signal to the (M + 1) th base station apparatus 14m + 1.
- the packet signal passes through at least one base station apparatus 14 and is transmitted to a plurality of terminal apparatuses. 12 is transmitted. Therefore, the transmission of the packet signal in the communication unit 30 can be said to be a notification of the packet signal.
- the communication unit 30 receives a packet signal from the (M + 1) th base station apparatus 14m + 1.
- the packet signal includes information on the remaining amount of the storage battery 22 acquired by the lighting device 16 (not shown) and an image captured by the lighting device 16 (not shown).
- the packet signal reaches the communication unit 30 by being transferred by the terminal device 12 or the base station device 14.
- the communication unit 30 outputs information about the remaining amount of the storage battery 22 and an image to the collection unit 40.
- the collection unit 40 receives information about the remaining amount of the storage battery 22 and images from the communication unit 30. That is, the collection unit 40 collects information on the remaining amount of the storage battery 22 that drives the base station device 14 from each base station device 14. The same applies to information relating to the remaining amount of the storage battery 22 that is driving the terminal device 12.
- the collection unit 40 stores these pieces of information in the storage unit 38 in order to manage information about the remaining amount of the storage battery 22 in units of the lighting device 16. In addition, the collection unit 40 stores the image in the storage unit 38 in units of the lighting device 16.
- the storage unit 38 is a storage medium for storing various information and images according to instructions from the collection unit 40. Since information and images are digital data, the storage unit 38 is configured by, for example, a hard disk.
- FIG. 4 shows the data structure of the table stored in the storage unit 38. As shown, a device column 200, a remaining amount column 202, and a route column 204 are included. In the device column 200, a base station device 14 to be managed and a base station device 14 connected to the lighting device 16 is shown. The device column 200 also shows the terminal device 12 that is a management target and is connected to the lighting device 16. In the remaining capacity column 202, the remaining capacity of the storage battery 22 connected to the base station apparatus 14 and the terminal apparatus 12 shown in the apparatus column 200 is shown. In the path column 204, information about a path from the base station apparatus 14 or the terminal apparatus 12 shown in the apparatus column 200 to the control apparatus 10 is shown. Management of the route is performed by the management unit 32. Returning to FIG.
- the management unit 32 manages the communication path between base stations via the communication unit 30.
- the inter-base station communication path is a path connecting the predetermined base station device 14 and the (M + 1) th base station device 14m + 1 in FIG.
- the communication path between base stations is set between a plurality of base station apparatuses 14 by a known technique.
- the management unit 32 receives setting contents from the (M + 1) th base station apparatus 14m + 1 in FIG.
- the management unit 32 stores information related to the route in the storage unit 38. Further, the management unit 32 specifies the base station device 14 whose remaining amount is smaller than the threshold value based on the table stored in the storage unit 38.
- the management unit 32 connects the terminal device 12 connected to the identified base station device 14 to another base station device 14 or sets a route that avoids the identified base station device 14.
- the management unit 32 outputs the processing result to the instruction unit 36.
- the instruction unit 36 receives the processing result from the management unit 32.
- the instruction unit 36 generates a packet signal for instructing execution of the processing result, and outputs the packet signal to the communication unit 30.
- the destination of the packet signal is the base station device 14 and the terminal device 12 included in the lighting system 100.
- the management unit 32 outputs information on the identified base station device 14 to the instruction unit 36, and the instruction unit 36 includes in the packet signal that the remaining amount of the identified base station device 14 is low. Also good.
- the base station device 14 and the terminal device 12 included in the illumination system 100 may connect the terminal device 12 connected to the identified base station device 14 to another base station based on the information included in the packet signal.
- a process of connecting to the device 14 or setting a route that avoids the identified base station device 14 is autonomously executed.
- the control unit 42 controls the operation of the entire control device 10. Moreover, the control part 42 is provided with the interface with a user, and receives the instruction
- an example of an instruction from the user is information regarding the time when the lighting unit 24 of the lighting device 16 (not shown) should be turned on, and information regarding the time when the lighting unit 24 of the lighting device 16 (not shown) should be turned off. Also good.
- the instruction is an instruction related to the operation of the illumination unit 24. When the light is turned off, only the operation in the illumination unit 24 in FIGS. 2A and 2B is different. Otherwise, the same operation as that when the light is turned on is executed.
- FIG. 5 shows the configuration of the base station apparatus 14.
- the base station device 14 includes a communication unit 60, a processing unit 62, a management unit 66, a control unit 72, an acquisition unit 74, a derivation unit 76, and a determination unit 78.
- the base station device 14 is connected to and driven by the storage battery 22 charged with power generated by solar power generation.
- the communication unit 60 communicates with other base station apparatuses 14 by inter-base station communication and can also communicate with at least one terminal apparatus 12.
- the communication unit 60 performs a frequency conversion process, a modulation / demodulation process, an amplification process, an AD conversion process, a DA conversion process, and the like, and a known technique may be used for these, and a description thereof is omitted here.
- the communication unit 60 receives the packet signal and transmits the packet signal.
- a packet signal includes, for example, a lighting instruction.
- the processing unit 62 is connected to the lighting device 16 (not shown) and executes processing for the lighting device 16.
- the processing unit 62 receives the lighting instruction received by the communication unit 60.
- the processing unit 62 instructs the lighting device 16 to turn on based on the lighting instruction.
- the processing unit 62 instructs the lighting device 16 to output information on the remaining amount of the storage battery 22 or output an image.
- the processing unit 62 receives information about the remaining amount of the storage battery 22 or an image from the lighting device 16, the processing unit 62 instructs the communication unit 60 to generate a packet signal including the information about the remaining amount of the storage battery 22 and the image.
- the base station device 14 corresponds to the (M + 1) th base station device 14m + 1 in FIG. 1, the processing unit 62 performs an interface function with the control device 10 (not shown).
- the management unit 66 manages information on the terminal device 12 communicating with the communication unit 60 and information on the path of communication between base stations.
- the management unit 66 updates the information when the communication path between base stations is changed.
- the acquisition unit 74 acquires information on the other base station apparatus 14 included in the path for communication between base stations from the management unit 66.
- the path may include a plurality of base station apparatuses 14.
- the acquisition unit 74 transmits a packet signal including an instruction for notifying each of the plurality of base station apparatuses 14 of information regarding the remaining amount via the processing unit 62 and the communication unit 60. Thereafter, the acquisition unit 74 acquires information regarding the remaining amount of the storage battery 22 that is driving the base station device 14 from each of the plurality of base station devices 14.
- FIG. 6 shows the data structure of the table stored in the acquisition unit 74.
- a base station device column 210 and a remaining amount column 212 are included.
- Base station apparatus column 210 shows base station apparatuses 14 included in the route.
- the remaining amount column 212 indicates the remaining amount corresponding to the base station device 14 indicated in the base station device column 210.
- the remaining amount of the storage battery 22 driving the base station device 14 may be indicated on the table.
- the acquisition unit 74 also acquires information regarding the remaining amount from the lighting device 16 (not shown) via the processing unit 62. Returning to FIG. When the acquisition unit 74 updates the table, the acquisition unit 74 notifies the deriving unit 76 to that effect.
- the derivation unit 76 When the derivation unit 76 receives the notification from the acquisition unit 74, the derivation unit 76 extracts information on the remaining amount from the table stored in the acquisition unit 74. Here, the remaining amount for each of the plurality of base station apparatuses 14 is extracted. The deriving unit 76 derives the remaining amount of the route based on the extracted information. More specifically, the derivation unit 76 selects one of information regarding a plurality of remaining amounts. For example, the deriving unit 76 selects the minimum remaining amount from the information regarding the plurality of remaining amounts. The deriving unit 76 sets the selected remaining amount as the remaining amount of the route. Note that the maximum remaining amount may be selected instead of the minimum remaining amount.
- the deriving unit 76 derives statistical processing values for a plurality of remaining amount values. For example, the deriving unit 76 derives an average value for a plurality of remaining amount values. At that time, the derivation unit 76 sets the statistical processing value as the remaining amount of the route. Note that a median value or the like may be used instead of the average value. The deriving unit 76 outputs the remaining amount of the derived route to the determining unit 78.
- the determination unit 78 receives the remaining amount of the route from the derivation unit 76.
- the determination unit 78 determines the notification period of the beacon signal based on the remaining amount of the route.
- the determination unit 78 stores a table for determining the notification cycle in advance.
- FIG. 7 shows the data structure of the table stored in the determination unit 78.
- a threshold value column 220 and a notification cycle column 222 for the remaining amount are included.
- threshold values E1, E2, and E3 are shown.
- the notification cycle column 222 the value of the notification cycle of the beacon signal is shown.
- the determination unit 78 determines the notification cycle by comparing the threshold values shown in the table with the remaining amount of the route. The determination unit 78 outputs the notification cycle to the communication unit 60.
- the processing unit 62 generates a beacon signal and outputs the beacon signal to the communication unit 60.
- the communication unit 60 notifies the beacon signal at the notification cycle determined by the determination unit 78.
- FIG. 8 shows a format of a beacon signal transmitted from the communication unit 60. Frame control, duration / ID, destination address, source address, BBSID, sequence control, frame body, and FCS are arranged. Here, the destination address and the source address are indicated as MAC addresses.
- the frame body corresponds to information to be notified to the terminal device 12.
- the control unit 72 controls the operation timing of the entire base station apparatus 14.
- FIG. 9 shows the configuration of the terminal device 12.
- the terminal device 12 includes a communication unit 80, a processing unit 82, a management unit 84, and a control unit 86.
- the terminal device 12 is connected to and driven by the storage battery 22 charged with power generated by solar power generation.
- the communication unit 80 executes the same processing as that of the communication unit 60 in FIG. Unlike the communication unit 60, the communication unit 80 does not perform inter-base station communication.
- the communication target of the communication unit 80 is the base station device 14.
- the communication unit 80 communicates with the base station device 14 capable of performing inter-base station communication, and communicates with the control device 10 via a path formed by the inter-base station communication from the base station device 14. In this way, the communication unit 80 receives the packet signal from the base station device 14.
- the packet signal includes, for example, a lighting instruction.
- the communication unit 80 transmits a packet signal to the base station device 14.
- the processing unit 82 performs the same processing as the processing unit 62 in FIG.
- the communication unit 80 receives a beacon signal from the base station device 14. Based on the BBSID included in the beacon signal, the processing unit 82 determines whether connection to the base station device 14 that is the notification source is possible. When the connection is possible, the processing unit 82 causes the communication unit 80 to execute a connection process with the base station device 14. A known technique is used as the connection process.
- the management unit 84 controls a communication target in the communication unit 80.
- the control unit 86 controls the operation timing of the entire terminal device 12.
- FIG. 10 is a sequence diagram illustrating a communication procedure performed by the illumination system 100.
- the terminal device 12 is about to newly join the lighting system 100, and the first base station device 14a and the fifth base station device 14e are installed around it. Further, it is assumed that the path from the first base station apparatus 14a to the (M + 1) th base station apparatus 14m + 1 is different from the path from the fifth base station apparatus 14e to the (M + 1) th base station apparatus 14m + 1.
- the first base station device 14a determines the notification cycle (S10), and the fifth base station device 14e also determines the notification cycle (S12).
- reports a beacon signal (S14).
- the terminal device 12 determines the connection destination as the first base station device 14a based on the beacon signal (S16).
- the first base station device 14a and the terminal device 12 execute a connection process (S18).
- the first base station apparatus 14a and the terminal apparatus 12 perform communication (S20). Thereafter, the fifth base station apparatus 14e notifies a beacon signal (S22).
- the modification relates to an illumination system including a base station device and a terminal device, as in the embodiment.
- the remaining amount of the route is derived based on the remaining amount in the storage battery of the plurality of base station apparatuses, and the notification cycle is determined based on the remaining amount of the route.
- a modification aims at simplifying the processing of the base station apparatus as compared with the embodiment.
- the base station apparatus which concerns on a modification acquires the residual amount of a storage battery. Further, the base station apparatus determines the notification cycle based on the remaining amount. That is, the base station apparatus which concerns on a modification determines a alerting
- the illumination system 100 according to the modification is the same type as that in FIG. 1, the control device 10 is the same type as that in FIG. 3, and the terminal device 12 is the same type as that in FIG. Below, it demonstrates centering on the difference with an Example.
- FIG. 11 shows the configuration of the base station apparatus 14 according to a modification of the present invention.
- the base station device 14 does not include the derivation unit 76 as compared with the base station device 14 of FIG.
- the acquisition unit 74 acquires information about the remaining amount in the storage battery 22 of the lighting device 16 (not shown) via the processing unit 62.
- the acquisition unit 74 outputs information regarding the remaining amount to the determination unit 78.
- the determination unit 78 receives information regarding the remaining amount from the acquisition unit 74.
- the determination unit 78 determines the notification period of the beacon signal based on the remaining amount. Since the process of the determination part 78 for determining the alerting
- the communication unit 60 notifies the beacon signal at the notification cycle determined by the determination unit 78.
- Another modification relates to a lighting system including a base station device and a terminal device, as before.
- the notification cycle has been changed according to the remaining amount, but in another modification, the notification cycle is not changed.
- it is desirable that notification of the remaining amount is made by a signal that has already been defined.
- a base station apparatus has a BSSID (hereinafter referred to as “second BSSID”) different from a BSSID (hereinafter referred to as “first BSSID”) to be inserted into a beacon signal for connection processing. ").
- the second BBSID is determined so as to change according to the remaining amount, and the remaining amount value and the second BBSID value are determined in a one-to-one relationship. That is, if the second BBSID is acquired, the remaining capacity of the storage battery is understood.
- the base station device inserts the second BBSID in the beacon signal without inserting the first BBSID.
- the terminal device When receiving the beacon signal, the terminal device estimates the remaining amount based on the second BBSID. Further, the terminal device extracts the transmission source address included in the beacon signal. The terminal device stores in advance the correspondence between the MAC address that is the transmission source address and the first BSSID, and identifies the first BSSID from the extracted lower transmission source address. The terminal apparatus selects a base station apparatus with a large remaining amount, and executes connection processing for the base station apparatus using the first BSSID.
- the illumination system 100 according to another modification is the same type as that shown in FIG. 1, the control device 10 is the same type as that shown in FIG. 3, and the terminal device 12 is the same type as that shown in FIG. Below, it demonstrates centering on the difference from before.
- FIG. 12 shows a configuration of a base station apparatus 14 according to another modification of the present invention.
- the base station apparatus 14 includes a communication unit 60, a processing unit 62, a management unit 66, and a control unit 72.
- the processing unit 62 includes a setting unit 110 and a generation unit 112.
- the processing unit 62 acquires information related to the remaining amount in the storage battery 22 of the lighting device 16 (not shown), similarly to the acquisition unit 74 in FIG. Or the process part 62 may derive
- the remaining amount in the storage battery 22 and the remaining amount of the route are not distinguished from each other and are simply referred to as the remaining amount.
- the processing unit 62 outputs the remaining amount to the setting unit 110.
- the setting unit 110 sets a second BSSID different from the first BSSID based on the remaining amount received from the processing unit 62.
- the first BSSID is an identifier used for connection processing, and can be said to be an identifier for identifying the base station apparatus 14.
- FIG. 13 shows the data structure of the table stored in the setting unit 110. As shown, a remaining amount column 230 and a second BBSID column 232 are included. The remaining amount column 230 shows the remaining amount that can be received from the processing unit 62. In the second BBSID column 232, the second BSSID corresponding to the remaining amount is shown. Returning to FIG. The setting unit 110 identifies the second BSSID from the remaining amount based on the table. The setting unit 110 outputs the second BSSID to the generation unit 112.
- the generation unit 112 receives the second BSSID from the setting unit 110.
- the generation unit 112 generates a beacon signal illustrated in FIG.
- the generation unit 112 inserts the second BBSID in the BBSID area of FIG.
- the generation unit 112 does not include the first BSSID in the beacon signal.
- the generation unit 112 inserts the MAC address assigned to the base station apparatus 14 in the source address area of FIG.
- the generation unit 112 inserts information to be notified to the terminal device 12 in the frame body area of FIG.
- the generation unit 112 causes the communication unit 60 to notify a beacon signal.
- the communication unit 80 of the terminal device 12 shown in FIG. 9 sequentially receives beacon signals.
- the processing unit 82 extracts the second BSSID and the transmission address from each beacon signal.
- the processing unit 82 stores in advance the correspondence between the MAC address that is the transmission address and the first BSSID.
- FIG. 14 shows a data structure of a table stored in the processing unit 82 of the terminal device 12 according to another modification of the present invention. As shown, a source address field 240 and a first BBSID field 242 are included.
- the source address column 240 shows the MAC address that is the source address
- the first BBSID column 242 shows the first BSSID corresponding to the MAC address in the source address column 240.
- it is assumed that only the first BSSID to which the terminal device 12 can be connected is included in the table.
- the processing unit 82 converts the MAC address to the first BSSID based on the table. When the MAC address is not shown in the table, the processing unit 82 discards the beacon signal including the MAC address. Moreover, the process part 82 specifies the residual amount of the storage battery 22 in the base station apparatus 14, or the residual amount of a path
- FIG. 15 is a flowchart showing a communication procedure by the terminal device 12 according to another modification of the present invention.
- the communication unit 80 receives a plurality of beacon signals (S50). If there is an unstored MAC address in the beacon signal (Y in S52), the processing unit 82 discards the beacon signal including the unstored MAC address (S54). On the other hand, if there is no unstored MAC address in the beacon signal (N in S52), step 54 is skipped.
- the processing unit 82 selects a beacon signal including the second BSSID corresponding to the maximum remaining amount (S56).
- the processing unit 82 specifies the first BSSID (S58).
- the processing unit 82 and the communication unit 80 perform connection processing using the first BSSID (S60).
- Still another modified example relates to an illumination system including a base station device and a terminal device as before. Furthermore, the base station apparatus which concerns on another modification inserts 2nd BSSID in a beacon signal instead of 1st BSSID similarly to another modification.
- a base station apparatus according to yet another modification reflects the number of hops to the control apparatus in the second BBSID, unlike another modification.
- the terminal device selects a base station device that reduces the number of hops based on the second BBSID.
- the lighting system 100 according to another modification is the same type as that in FIG. 1, the control device 10 is the same type as in FIG. 3, the base station device 14 is the same type as in FIG. 12, and the terminal device 12 is It is the same type as FIG. Below, it demonstrates centering on the difference from before.
- the processing unit 62 in FIG. 12 acquires information regarding the number of hops in the route to the (M + 1) th base station apparatus 14m + 1 via the communication unit 60. This can be said to be the number of hops in the route from the base station apparatus 14 to the control apparatus 10. In addition, since the well-known technique in the communication between base stations should just be used for acquisition of the number of hops, description is abbreviate
- the processing unit 62 outputs information regarding the number of hops to the setting unit 110.
- the setting unit 110 sets a second BSSID different from the first BSSID based on the information regarding the number of hops received from the processing unit 62.
- FIG. 16 shows a data structure of a table stored in the setting unit 110 of the base station apparatus 14 according to still another modification of the present invention. As illustrated, a hop number column 234 and a second BBSID column 232 are included. The hop number column 234 indicates the number of hops that can be received from the processing unit 62. In the second BBSID column 232, the second BSSID corresponding to the remaining amount is shown. Returning to FIG. The setting unit 110 identifies the second BSSID from the number of hops based on the table. The setting unit 110 outputs the second BSSID to the generation unit 112.
- the processing of the generation unit 112 is the same as before.
- the communication unit 80 and the processing unit 82 of the terminal device 12 illustrated in FIG. 9 execute the same processing as before.
- the processing unit 82 selects the first BSSID having the smallest number of hops.
- Subsequent processing of the processing unit 82 and the processing unit 62 is the same as before.
- the notification period of the beacon signal is changed according to the remaining amount of the route, so that information on the remaining amount of the route can be notified without changing the content of the beacon signal. Further, since the notification cycle is shortened as the remaining amount of the route increases, it is possible to easily receive the beacon signal. In addition, since a beacon signal is easily received, it is possible to easily select a route with a large remaining amount. Since a route with a large remaining amount is easily selected, communication between base stations can be stably maintained. Moreover, since the average value with respect to the remaining amount of the plurality of storage batteries is used as the remaining amount in the route, the remaining amount in the route can be easily derived. Further, since the minimum value among the remaining amounts of the plurality of storage batteries is selected as the remaining amount in the route, the remaining amount in the route can be easily derived.
- the notification cycle of the beacon signal is changed according to the remaining amount of the storage battery, information on the remaining amount of the storage battery can be notified without changing the content of the beacon signal. Moreover, since a notification period is shortened, so that the remaining amount of a storage battery becomes large, it can be made to receive a beacon signal easily. Further, since the remaining amount of the storage battery is used, the processing can be simplified. Further, when the remaining amount becomes smaller than the threshold value, the notification of the beacon signal is stopped, so that the drive period of the base station apparatus can be extended. In addition, since only the beacon signal notification period is changed, information on the base station apparatus can be notified to the terminal apparatus while reducing changes in the signal format defined in the wireless LAN.
- the second BSSID different from the first BSSID for identifying the base station apparatus since the second BSSID different from the first BSSID for identifying the base station apparatus is used, information can be transmitted by the BSSID. Further, since the second BSSID is changed based on the remaining amount, information regarding the remaining amount can be transmitted by the beacon signal without changing the format of the beacon signal. Further, since the remaining amount is reflected in the second BSSID, the remaining amount can be accurately notified. Moreover, since the MAC address of the base station apparatus is included in the beacon signal, the transmission source of the beacon signal can be clarified. Moreover, since the transmission source of the beacon signal is clarified, the terminal device can specify the first BSSID. Further, since the first BSSID is specified, connection processing using the first BSSID can be executed.
- the second BSSID is changed based on the number of hops, information regarding the number of hops can be transmitted by the beacon signal without changing the format of the beacon signal. Moreover, since the number of hops is reflected in the second BSSID, the number of hops can be accurately notified.
- information on the number of hops is notified by a beacon signal broadcast from the base station device 14.
- the present invention is not limited to this.
- information related to the remaining amount may be notified by a beacon signal notified from the base station device 14.
- the base station apparatus 14 of FIG. 12 and the base station apparatus 14 of FIG. 15 are combined.
- the acquisition unit 74 in FIG. 5 acquires information on the remaining amount of the storage battery that drives each base station device 14 included in the path formed by the inter-base station communication.
- the deriving unit 76 derives the remaining amount of the route based on the information acquired by the acquiring unit 74. As described above, at this time, calculation such as averaging is performed.
- the determining unit 78 determines the notification period of the beacon signal based on the remaining amount derived by the deriving unit 76.
- the determination unit 78 may determine to stop the notification of the beacon signal when the remaining amount becomes smaller than the threshold value.
- the communication unit 60 notifies the beacon signal at the notification cycle determined by the determination unit 78.
- the base station device 14 of FIG. 12 and the base station device 14 of FIG. 11 may be combined.
- the acquisition unit 74 in FIG. 5 acquires information regarding the remaining amount of the storage battery 22.
- the determination unit 78 determines the notification period of the beacon signal based on the information regarding the remaining amount acquired by the acquisition unit 74.
- the communication unit 60 notifies the beacon signal at the notification cycle determined by the determination unit 78. According to this modification, the remaining amount and the number of hops can be notified at the same time.
- control device 10 control device, 12 terminal device, 14 base station device, 16 lighting device, 20 solar panel, 22 storage battery, 24 lighting unit, 26 imaging device, 28 control unit, 30 communication unit, 32 management unit, 36 instruction unit, 38 storage Section, 40 collection section, 42 control section, 60 communication section, 62 processing section, 66 management section, 72 control section, 74 acquisition section, 76 derivation section, 78 determination section, 100 lighting system, 110 setting section, 112 generation section.
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Abstract
This invention provides a technique for notifying, to terminal apparatuses, information related to a base station apparatus, while reducing changes of a signal format specified in a communication system. A base station apparatus (14) is driven by use of a storage battery. A communication unit (60) can communicate with another base station apparatus via an inter-base-station communication and also can communicate with terminal apparatuses. An establishing unit (110) establishes, based on the remaining amount of the storage battery, a second SSID different from a first SSID used for identifying the base station apparatus (14). A generating unit (112) generates a beacon signal that includes the established second SSID, a MAC address allocated to the base station apparatus (14) and information to be notified to the terminal apparatuses. The communication unit (60) broadcasts the beacon signal. A processing unit (62) executes a connection processing using the first SSID together with a terminal apparatus having received the generated beacon signal.
Description
本発明は、通信技術に関し、特に無線ネットワークにて接続された基地局装置に関する。
The present invention relates to communication technology, and more particularly to base station devices connected by a wireless network.
近年、新たな発電装置として、太陽光発電装置が注目されている。このような太陽光発電装置は、さまざまなシステムに適用される。例えば、カメラ付防犯監視システムでは、太陽光発電装置で発電した電力が蓄電池に充電され、当該電力がネットワークカメラおよび投光器の電源とされる。また、ネットワークカメラは、携帯型電話回線経由でインターネットに接続される。このような構成において、侵入が発生した場合、投光器で侵入者を照らし、ネットワークカメラで撮影された映像が、設定先に電子メールで通報される(例えば、特許文献1参照)。
In recent years, photovoltaic power generation devices have attracted attention as a new power generation device. Such a solar power generation apparatus is applied to various systems. For example, in a security monitoring system with a camera, electric power generated by a solar power generator is charged in a storage battery, and the electric power is used as a power source for a network camera and a projector. The network camera is connected to the Internet via a portable telephone line. In such a configuration, when an intrusion occurs, an intruder is illuminated by a projector, and an image taken by a network camera is notified to the setting destination by e-mail (for example, see Patent Document 1).
太陽光発電装置と蓄電池とが街路灯に設置されると、街路灯単独で電源が供給され、街路灯への電源ケーブル等が不要になる。その結果、街路灯の設置が容易になる。複数の街路灯の点灯や消灯などを制御するためには、各街路灯へ制御信号を送信する必要がある。制御信号を送信するためのケーブルを省略するために、無線LAN(Local Area Network)のような無線通信システムが適している。つまり、街路灯には、基地局装置や端末装置が設置される。無線通信システムにおける通信を効率的に実行するためには、例えば、基地局装置や端末装置が階層的に配置される。
When a solar power generation device and a storage battery are installed in a street light, power is supplied by the street light alone, and a power cable or the like to the street light becomes unnecessary. As a result, street lamps can be easily installed. In order to control lighting and extinguishing of a plurality of street lamps, it is necessary to transmit a control signal to each street lamp. A wireless communication system such as a wireless LAN (Local Area Network) is suitable for omitting a cable for transmitting a control signal. That is, a base station device and a terminal device are installed in the street light. In order to efficiently execute communication in the wireless communication system, for example, base station devices and terminal devices are arranged in a hierarchy.
そのため、複数の基地局装置によって基地局間通信が実行され、各基地局装置に少なくともひとつの端末装置が接続される。このような構成において、端末装置が、複数の基地局装置に接続可能である場合、端末装置にとって適した基地局装置を選択する方が好ましい。端末装置にとって適した基地局装置とは、例えば、蓄電池の残量が多い基地局装置や、基地局通信のホップ数が少なくなる経路に含まれる基地局装置である。このような基地局装置を選択するために、基地局装置から端末装置へ何らかの情報が送信されるべきである。一方、無線LANにおいて規定された信号フォーマットへの変更は少ない方が好ましい。
Therefore, communication between base stations is executed by a plurality of base station devices, and at least one terminal device is connected to each base station device. In such a configuration, when the terminal device can be connected to a plurality of base station devices, it is preferable to select a base station device suitable for the terminal device. The base station device suitable for the terminal device is, for example, a base station device with a large remaining amount of storage battery or a base station device included in a route with a small number of hops of base station communication. In order to select such a base station apparatus, some information should be transmitted from the base station apparatus to the terminal apparatus. On the other hand, fewer changes to the signal format defined in the wireless LAN are preferable.
本発明はこうした状況に鑑みてなされたものであり、その目的は、通信システムにおいて規定された信号フォーマットの変更を少なくしながら、基地局装置に関する情報を端末装置へ通知する技術を提供することである。
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a technique for notifying a terminal device of information related to a base station device while reducing changes in the signal format defined in the communication system. is there.
上記課題を解決するために、本発明のある態様の基地局装置は、蓄電池によって駆動される基地局装置であって、基地局間通信によって他の基地局装置と通信するとともに、端末装置とも通信可能な通信部と、蓄電池の残量をもとに、本基地局装置を識別するための第1SSIDとは異なった第2SSIDを設定する設定部と、設定部において設定した第2SSIDと、本基地局装置に付与されたMACアドレスと、端末装置に通知すべき情報とが含まれたビーコン信号を生成し、ビーコン信号を通信部に報知させる生成部と、生成部において生成したビーコン信号を受信した端末装置との間で第1SSIDによる接続処理を実行する処理部とを備える。生成部は、ビーコン信号に第1SSIDを含めず、処理部における接続処理の対象となる端末装置では、MACアドレスと第1SSIDとの対応が予め認識されており、ビーコン信号に含まれたMACアドレスから本基地局装置の第1SSIDが特定されている。
In order to solve the above problems, a base station apparatus according to an aspect of the present invention is a base station apparatus driven by a storage battery, and communicates with other base station apparatuses through inter-base station communication and also communicates with terminal apparatuses. A communication unit, a setting unit that sets a second SSID different from the first SSID for identifying the base station device based on the remaining amount of the storage battery, a second SSID set in the setting unit, and the base A beacon signal including the MAC address assigned to the station device and information to be notified to the terminal device is generated, and a beacon signal generated by the generating unit is received, and a beacon signal generated by the generating unit is received. And a processing unit that executes a connection process using the first SSID with the terminal device. The generation unit does not include the first SSID in the beacon signal, and the terminal device that is the target of the connection process in the processing unit recognizes the correspondence between the MAC address and the first SSID in advance, and from the MAC address included in the beacon signal The first SSID of the base station apparatus is specified.
本発明の別の態様もまた、基地局装置である。この装置は、蓄電池によって駆動される基地局装置であって、基地局間通信によって他の基地局装置と通信するとともに、端末装置とも通信可能な通信部と、通信部での基地局間通信によって形成された経路におけるホップ数をもとに、本基地局装置を識別するための第1SSIDとは異なった第2SSIDを設定する設定部と、設定部において設定した第2SSIDと、本基地局装置に付与されたMACアドレスと、端末装置に通知すべき情報とが含まれたビーコン信号を生成し、ビーコン信号を通信部に報知させる生成部と、生成部において生成したビーコン信号を受信した端末装置との間で第1SSIDによる接続処理を実行する処理部とを備える。生成部は、ビーコン信号に第1SSIDを含めず、処理部における接続処理の対象となる端末装置では、MACアドレスと第1SSIDとの対応が予め認識されており、ビーコン信号に含まれたMACアドレスから本基地局装置の第1SSIDが特定されている。
Another aspect of the present invention is also a base station apparatus. This device is a base station device driven by a storage battery, communicates with other base station devices by inter-base station communication, and communicates with a terminal device by inter-base station communication at the communication unit. Based on the number of hops in the formed route, a setting unit that sets a second SSID different from the first SSID for identifying the base station device, a second SSID set by the setting unit, and the base station device A generating unit that generates a beacon signal including the assigned MAC address and information to be notified to the terminal device, and notifies the communication unit of the beacon signal; and a terminal device that receives the beacon signal generated by the generating unit; And a processing unit that executes a connection process using the first SSID. The generation unit does not include the first SSID in the beacon signal, and the terminal device that is the target of the connection process in the processing unit recognizes the correspondence between the MAC address and the first SSID in advance, and from the MAC address included in the beacon signal The first SSID of the base station apparatus is specified.
本発明のさらに別の態様もまた、基地局装置である。この装置は、蓄電池によって駆動される基地局装置であって、基地局間通信によって他の基地局装置と通信するとともに、端末装置とも通信可能な通信部と、通信部での基地局間通信によって形成された経路に含まれた各他の基地局装置を駆動させている蓄電池の残量に関する情報を取得する取得部と、取得部において取得した情報をもとに、経路における残量を導出する導出部と、導出部において導出した残量をもとに、ビーコン信号の報知周期を決定する決定部とを備える。通信部は、決定部において決定した報知周期にて、端末装置に報知すべき情報が含まれたビーコン信号を報知する。
Still another aspect of the present invention is also a base station apparatus. This device is a base station device driven by a storage battery, communicates with other base station devices by inter-base station communication, and communicates with a terminal device by inter-base station communication at the communication unit. An acquisition unit that acquires information on the remaining amount of the storage battery that drives each other base station device included in the formed route, and a remaining amount in the route is derived based on the information acquired in the acquisition unit. A derivation unit and a determination unit that determines a notification period of the beacon signal based on the remaining amount derived by the derivation unit. A communication part alert | reports the beacon signal containing the information which should be alert | reported to a terminal device with the alerting | reporting period determined in the determination part.
本発明のさらに別の態様もまた、基地局装置である。この装置は、蓄電池によって駆動される基地局装置であって、基地局間通信によって他の基地局装置と通信するとともに、端末装置とも通信可能な通信部と、蓄電池の残量に関する情報を取得する取得部と、取得部において取得した残量に関する情報をもとに、ビーコン信号の報知周期を決定する決定部とを備える。通信部は、決定部において決定した報知周期にて、端末装置に報知すべき情報が含まれたビーコン信号を報知する。
Still another aspect of the present invention is also a base station apparatus. This device is a base station device driven by a storage battery, and communicates with other base station devices through inter-base station communication, and also acquires a communication unit capable of communicating with a terminal device and information on the remaining amount of the storage battery. An acquisition unit and a determination unit that determines a notification period of the beacon signal based on information on the remaining amount acquired by the acquisition unit. A communication part alert | reports the beacon signal containing the information which should be alert | reported to a terminal device with the alerting | reporting period determined in the determination part.
なお、以上の構成要素の任意の組合せ、本発明の表現を方法、装置、システム、記録媒体、コンピュータプログラムなどの間で変換したものもまた、本発明の態様として有効である。
It should be noted that an arbitrary combination of the above-described components and a conversion of the expression of the present invention between a method, an apparatus, a system, a recording medium, a computer program, etc. are also effective as an aspect of the present invention.
本発明によれば、通信システムにおいて規定された信号フォーマットの変更を少なくしながら、基地局装置に関する情報を端末装置へ通知できる。
According to the present invention, it is possible to notify the terminal device of information related to the base station device while reducing changes in the signal format defined in the communication system.
本発明を具体的に説明する前に、概要を述べる。本発明の実施例は、複数の基地局装置と複数の端末装置とによって構成される照明システムに関する。複数の基地局装置は、互いに基地局間通信を実行するとともに、各基地局装置は、端末装置を接続する。ここで、基地局装置と端末装置とは、例えば、無線LANによって接続される。また、基地局装置および端末装置のそれぞれは、太陽光発電装置に接続された照明装置に設置される。照明装置は、撮像機能を有していてもよい。さらに、照明システムを制御するための制御装置は、いずれかの基地局装置に接続される。例えば、端末装置は、複数の基地局装置を介して、制御装置に接続される。制御装置は、照明装置の蓄電池の残量に関する情報を端末装置等から受信する。また、制御装置は、端末装置等に対して、点灯を指示するための信号(以下、「点灯指示」という)を送信する。
An outline will be given before concretely explaining the present invention. Embodiments of the present invention relate to an illumination system including a plurality of base station devices and a plurality of terminal devices. The plurality of base station apparatuses perform inter-base station communication with each other, and each base station apparatus connects terminal apparatuses. Here, the base station apparatus and the terminal apparatus are connected by, for example, a wireless LAN. In addition, each of the base station device and the terminal device is installed in a lighting device connected to the solar power generation device. The lighting device may have an imaging function. Furthermore, a control device for controlling the lighting system is connected to one of the base station devices. For example, the terminal device is connected to the control device via a plurality of base station devices. A control apparatus receives the information regarding the residual amount of the storage battery of an illuminating device from a terminal device etc. In addition, the control device transmits a signal for instructing lighting (hereinafter, referred to as “lighting instruction”) to the terminal device or the like.
前述のごとく、基地局装置は、基地局間通信を実行するとともに、端末装置との通信も実行している。そのため、基地局装置におけるトラヒックは、増加する傾向にあり、蓄電池の電力消費が大きくなりやすい。ここで、いずれかの基地局装置が、蓄電池の残量の減少によって動作を停止した場合、当該基地局装置を介して制御装置に接続している端末装置や基地局装置は、制御装置と通信できなくなる。その結果、制御装置による各照明装置の制御がなされなくなる。このような状況の発生を抑制するために、端末装置は、蓄電池の残量が多い基地局装置に接続することが好ましい。さらに、端末装置と制御装置とは、基地局間通信によって接続されているので、基地局間通信の経路には、複数の基地局装置が含まれている可能性がある。そのため、端末装置が直接接続する基地局装置における残量だけではなく、経路に含まれる複数の基地局装置における残量(以下、「経路の残量」という)も考慮されるべきである。一方、端末装置にとっては、接続すべき基地局装置を選択するために、基地局装置から、残量に関する情報を受信できる方が好ましい。また、トラヒックの増加を抑制するために、残量に関する情報を通知するために、新たな信号が規定されないことが要求される。
As described above, the base station device executes communication between base stations and also communicates with the terminal device. Therefore, the traffic in the base station device tends to increase, and the power consumption of the storage battery tends to increase. Here, when one of the base station devices stops operating due to a decrease in the remaining capacity of the storage battery, the terminal device or base station device connected to the control device via the base station device communicates with the control device. become unable. As a result, control of each lighting device by the control device is not performed. In order to suppress the occurrence of such a situation, the terminal device is preferably connected to a base station device with a large remaining battery capacity. Furthermore, since the terminal device and the control device are connected by communication between base stations, there is a possibility that a plurality of base station devices are included in the path of communication between base stations. Therefore, not only the remaining amount in the base station device to which the terminal device is directly connected, but also the remaining amount in a plurality of base station devices included in the route (hereinafter referred to as “remaining route amount”) should be considered. On the other hand, it is preferable for the terminal device to be able to receive information on the remaining amount from the base station device in order to select the base station device to be connected. Moreover, in order to suppress the increase in traffic, it is required that a new signal is not defined in order to notify information regarding the remaining amount.
これに対応するために、本実施例に係る通信システムは、次の処理を実行する。基地局装置は、制御装置への経路を特定するとともに、経路に含まれた複数の基地局装置の残量に関する情報を取得する。基地局装置は、最小の残量を選択し、それを経路の残量とする。また、基地局装置は、経路の残量に応じて、ビーコン信号の報知周期を決定する。例えば、経路の残量が小さくなれば、報知周期が長くされる。基地局装置は、報知周期にしたがってビーコン信号を報知する。端末装置は、ビーコン信号を受信することによって基地局装置の存在を認識し、基地局装置へ接続を要求する。経路の残量が大きい基地局装置からのビーコン信号の報知頻度が大きくなるので、端末装置は、そのような基地局装置を早期に認識できる。その結果、端末装置は、そのような基地局装置へ接続を要求しやすくなる。
To cope with this, the communication system according to the present embodiment executes the following processing. The base station device specifies a route to the control device and obtains information regarding the remaining amounts of the plurality of base station devices included in the route. The base station apparatus selects the minimum remaining amount and sets it as the remaining amount of the route. Moreover, the base station apparatus determines the notification period of the beacon signal according to the remaining amount of the route. For example, if the remaining amount of the route becomes small, the notification cycle is lengthened. A base station apparatus alert | reports a beacon signal according to an alerting | reporting period. The terminal device recognizes the presence of the base station device by receiving the beacon signal, and requests connection to the base station device. Since the notification frequency of a beacon signal from a base station apparatus with a large remaining amount of a path increases, the terminal apparatus can recognize such a base station apparatus at an early stage. As a result, the terminal device easily requests connection to such a base station device.
図1は、本発明の実施例に係る照明システム100の概要を示す。照明システム100は、制御装置10、端末装置12と総称される第1端末装置12a、第2端末装置12b、第3端末装置12c、第4端末装置12d、第N端末装置12n、基地局装置14と総称される第1基地局装置14a、第2基地局装置14b、第3基地局装置14c、第M基地局装置14m、第M+1基地局装置14m+1、照明装置16と総称される第1照明装置16a、第2照明装置16b、第3照明装置16c、第M照明装置16m、第M+1照明装置16m+1、第M+2照明装置16m+2、第M+3照明装置16m+3、第M+4照明装置16m+4、第M+N+1照明装置16m+n+1を含む。
FIG. 1 shows an outline of a lighting system 100 according to an embodiment of the present invention. The illumination system 100 includes a first terminal device 12a, a second terminal device 12b, a third terminal device 12c, a fourth terminal device 12d, an Nth terminal device 12n, and a base station device 14 collectively referred to as a control device 10 and a terminal device 12. And the first base station apparatus 14a, the second base station apparatus 14b, the third base station apparatus 14c, the Mth base station apparatus 14m, the M + 1th base station apparatus 14m + 1, and the first illumination apparatus 16 16a, second illumination device 16b, third illumination device 16c, Mth illumination device 16m, M + 1th illumination device 16m + 1, M + 2 illumination device 16m + 2, M + 3 illumination device 16m + 3, M + 4 illumination device 16m + 4, and M + N + 1 illumination device 16m + n + 1. Including.
制御装置10は、ユーザからの指示を受けつけ可能なインターフェイスを備えており、受けつけた指示に応じた情報(以下、「指示情報」という)を生成し、生成した情報を照明システム100全体に出力する。したがって、指示情報の出力は報知に相当する。指示の一例が、後述の照明装置16を点灯させるための指示であり、生成した指示情報の一例が、照明装置16の点灯の指示が示された情報である。これは、前述の点灯指示に相当する。制御装置10は、例えば、PCによって構成される。また、制御装置10は、端末装置12や基地局装置14を介して、各照明装置16に関する情報を収集する。各照明装置16に関する情報とは、例えば、照明装置16の蓄電池の残量についての情報である。
The control device 10 includes an interface capable of receiving instructions from the user, generates information corresponding to the received instructions (hereinafter referred to as “instruction information”), and outputs the generated information to the entire lighting system 100. . Therefore, the output of the instruction information corresponds to notification. An example of the instruction is an instruction for lighting a lighting device 16 described later, and an example of the generated instruction information is information indicating an instruction to turn on the lighting device 16. This corresponds to the lighting instruction described above. The control device 10 is configured by a PC, for example. In addition, the control device 10 collects information regarding each lighting device 16 via the terminal device 12 and the base station device 14. The information regarding each lighting device 16 is, for example, information about the remaining capacity of the storage battery of the lighting device 16.
端末装置12は、無線LANの端末装置に相当し、基地局装置14は、無線LANの基地局装置に相当する。複数の基地局装置14が基地局間通信を実行するとともに、複数の端末装置12のそれぞれは、いずれかの基地局装置14に接続される。複数の基地局装置14のうち、第M+1基地局装置14m+1が、制御装置10に接続され、制御装置10からの指示情報を受けつける。第M+1基地局装置14m+1は、指示情報が含まれたパケット信号を、複数の基地局装置14のうちの別のひとつ、例えば、第3基地局装置14cに送信する。なお、基地局装置14の代わりに、端末装置12が、制御装置10に接続されていてもよい。
The terminal device 12 corresponds to a wireless LAN terminal device, and the base station device 14 corresponds to a wireless LAN base station device. A plurality of base station apparatuses 14 perform inter-base station communication, and each of the plurality of terminal apparatuses 12 is connected to one of the base station apparatuses 14. Among the plurality of base station apparatuses 14, the (M + 1) th base station apparatus 14m + 1 is connected to the control apparatus 10 and receives instruction information from the control apparatus 10. The (M + 1) th base station apparatus 14m + 1 transmits a packet signal including the instruction information to another one of the plurality of base station apparatuses 14, for example, the third base station apparatus 14c. Note that the terminal device 12 may be connected to the control device 10 instead of the base station device 14.
第3基地局装置14cは、基地局間通信を使用して、他の基地局装置14へパケット信号を転送する。また、第3基地局装置14cは、直接接続した端末装置12、例えば、第4端末装置12dに対してもパケット信号を送信する。さらに、第3基地局装置14cは、パケット信号に含まれた指示情報の内容に応じて、後述の照明装置16を制御する。他の基地局装置14も同様に動作する。第1端末装置12aから第N端末装置12nは、基地局装置14からのパケット信号を受信する。これらの端末装置12も、パケット信号に含まれた指示情報の内容に応じて、後述の照明装置16を制御する。
3rd base station apparatus 14c transfers a packet signal to the other base station apparatus 14 using communication between base stations. The third base station device 14c also transmits a packet signal to the directly connected terminal device 12, for example, the fourth terminal device 12d. Further, the third base station apparatus 14c controls the lighting apparatus 16 described later according to the content of the instruction information included in the packet signal. Other base station apparatuses 14 operate in the same manner. The first terminal apparatus 12a to the Nth terminal apparatus 12n receive the packet signal from the base station apparatus 14. These terminal devices 12 also control a lighting device 16 to be described later according to the content of the instruction information included in the packet signal.
照明装置16は、太陽光発電装置を備え、発電した電力を蓄電池に蓄えさせる。また、照明装置16は、充電された電力によって、照明を点灯させる。ここで、照明装置16は、端末装置12あるいは基地局装置14に接続されており、端末装置12あるいは基地局装置14からの指示をもとに、照明を点灯させたり、消灯させたりする。また、照明装置16には、撮像装置が備えており、動画像や静止画像(以下、これらを「画像」と総称する)を撮像してもよい。なお、照明装置16の蓄電池に充電された電力によって、端末装置12や基地局装置14も駆動される。端末装置12と基地局装置14との一方と照明装置16との組合せが、前述の街路灯に相当する。
The lighting device 16 includes a solar power generation device, and stores the generated power in a storage battery. Moreover, the illuminating device 16 turns on illumination with the charged electric power. Here, the illumination device 16 is connected to the terminal device 12 or the base station device 14, and turns on or off the illumination based on an instruction from the terminal device 12 or the base station device 14. The illumination device 16 includes an imaging device, and may capture moving images and still images (hereinafter collectively referred to as “images”). Note that the terminal device 12 and the base station device 14 are also driven by the power charged in the storage battery of the lighting device 16. A combination of one of the terminal device 12 and the base station device 14 and the lighting device 16 corresponds to the street lamp described above.
端末装置12や基地局装置14は、照明装置16における蓄電池の残量に関する情報や画像をパケット信号に含めて送信する。これらのパケット信号は、指示情報が含まれたパケット信号とは逆の経路をたどるように転送され、制御装置10に受信される。その結果、制御装置10は、各照明装置16における蓄電池の残量に関する情報を管理することができる。また、制御装置10は、各照明装置16において撮像された画像を取得することができる。
The terminal device 12 and the base station device 14 transmit information and images related to the remaining amount of storage battery in the lighting device 16 in a packet signal. These packet signals are transferred so as to follow the reverse path to the packet signal including the instruction information, and are received by the control device 10. As a result, the control device 10 can manage information regarding the remaining amount of the storage battery in each lighting device 16. In addition, the control device 10 can acquire an image captured by each lighting device 16.
図2(a)-(b)は、照明装置16の構成を示す。図2(a)において、照明装置16は、ソーラパネル20、蓄電池22、照明部24、撮像装置26、制御部28を含む。ソーラパネル20は、前述の太陽光発電装置に相当し、太陽光を受けて発電を実行する。蓄電池22は、ソーラパネル20において発電された電力を蓄える。蓄電池22は、照明装置16全体に電力を供給するとともに、接続された端末装置12あるいは基地局装置14にも電力を供給する。ソーラパネル20および蓄電池22には公知の技術が使用されればよいので、ここでは説明を省略する。
2 (a)-(b) show the configuration of the illumination device 16. FIG. In FIG. 2A, the lighting device 16 includes a solar panel 20, a storage battery 22, a lighting unit 24, an imaging device 26, and a control unit 28. The solar panel 20 corresponds to the above-described solar power generation device, and generates power upon receiving sunlight. The storage battery 22 stores the electric power generated in the solar panel 20. The storage battery 22 supplies power to the entire lighting device 16 and also supplies power to the connected terminal device 12 or base station device 14. Since a well-known technique should just be used for the solar panel 20 and the storage battery 22, description is abbreviate | omitted here.
照明部24は、制御部28からの指示をもとに、点灯したり消灯したりする。なお、点滅してもよい。制御部28は、図示しない端末装置12や基地局装置14から、照明部24の点灯や消灯の指示を受けつける。制御部28は、受けつけた指示に応じて、照明部24の動作を制御する。また、制御部28は、ソーラパネル20での発電量や、蓄電池22の残量を取得し、図示しない端末装置12や基地局装置14へ残量に関する情報を報告する。ここで、制御部28は、定期的に発電量や残量を取得してもよいし、図示しない端末装置12や基地局装置14からの指示に応じて発電量や残量を取得してもよい。
The illumination unit 24 is turned on or off based on an instruction from the control unit 28. It may blink. The control unit 28 receives instructions to turn on and off the illumination unit 24 from the terminal device 12 and the base station device 14 (not shown). The control unit 28 controls the operation of the illumination unit 24 according to the received instruction. Further, the control unit 28 acquires the amount of power generated by the solar panel 20 and the remaining amount of the storage battery 22, and reports information related to the remaining amount to the terminal device 12 and the base station device 14 (not shown). Here, the control unit 28 may periodically acquire the power generation amount or the remaining amount, or may acquire the power generation amount or the remaining amount according to an instruction from the terminal device 12 or the base station device 14 (not shown). Good.
撮像装置26は、画像を撮像する。画像は、デジタルデータとして取得される。撮像装置26は、定期的に撮像を実行してもよいし、図示しない端末装置12や基地局装置14からの指示に応じて撮像を実行してもよい。また、撮像装置26は、制御部28を介して、図示しない端末装置12や基地局装置14へ画像を出力してもよいし、内蔵の記憶媒体に画像を記憶してもよい。なお、図2(b)の照明装置16に示すように、図2(a)の構成から撮像装置26を省略してもよい。これにより、照明装置16の構成が簡単になる。
The imaging device 26 captures an image. The image is acquired as digital data. The imaging device 26 may periodically perform imaging, or may perform imaging in response to an instruction from the terminal device 12 or the base station device 14 (not shown). The imaging device 26 may output an image to the terminal device 12 and the base station device 14 (not shown) via the control unit 28, or may store the image in a built-in storage medium. As shown in the illumination device 16 in FIG. 2B, the imaging device 26 may be omitted from the configuration in FIG. Thereby, the structure of the illuminating device 16 becomes simple.
この構成は、ハードウエア的には、任意のコンピュータのCPU、メモリ、その他のLSIで実現でき、ソフトウエア的にはメモリにロードされた通信機能のあるプログラムなどによって実現されるが、ここではそれらの連携によって実現される機能ブロックを描いている。したがって、これらの機能ブロックがハードウエアのみ、ソフトウエアのみ、またはそれらの組合せによっていろいろな形で実現できることは、当業者には理解されるところである。
This configuration can be realized in terms of hardware by a CPU, memory, or other LSI of any computer, and in terms of software, it is realized by a program having a communication function loaded in the memory. Describes functional blocks realized by collaboration. Accordingly, those skilled in the art will understand that these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof.
図3は、制御装置10の構成を示す。制御装置10は、通信部30、管理部32、指示部36、記憶部38、収集部40、制御部42を含む。通信部30は、後述の指示部36において生成したパケット信号を受けつける。通信部30は、図1の第M+1基地局装置14m+1にケーブルや無線LAN等で接続されており、第M+1基地局装置14m+1へパケット信号を送信する。前述のごとく、第M+1基地局装置14m+1は、基地局間通信によって他の基地局装置14へパケット信号を送信するので、パケット信号は、少なくともひとつの基地局装置14を経由して複数の端末装置12へ送信される。そのため、通信部30におけるパケット信号の送信は、パケット信号の報知ともいえる。
FIG. 3 shows the configuration of the control device 10. The control device 10 includes a communication unit 30, a management unit 32, an instruction unit 36, a storage unit 38, a collection unit 40, and a control unit 42. The communication unit 30 receives a packet signal generated by an instruction unit 36 described later. The communication unit 30 is connected to the (M + 1) th base station apparatus 14m + 1 in FIG. 1 via a cable or a wireless LAN, and transmits a packet signal to the (M + 1) th base station apparatus 14m + 1. As described above, since the (M + 1) th base station apparatus 14m + 1 transmits a packet signal to another base station apparatus 14 by inter-base station communication, the packet signal passes through at least one base station apparatus 14 and is transmitted to a plurality of terminal apparatuses. 12 is transmitted. Therefore, the transmission of the packet signal in the communication unit 30 can be said to be a notification of the packet signal.
通信部30は、第M+1基地局装置14m+1からのパケット信号を受信する。当該パケット信号には、図示しない照明装置16にて取得された蓄電池22の残量に関する情報や、図示しない照明装置16にて撮像された画像が含まれている。前述のごとく、当該パケット信号は、端末装置12や基地局装置14によって転送されることによって、通信部30に到達している。通信部30は、蓄電池22の残量に関する情報や、画像を収集部40へ出力する。
The communication unit 30 receives a packet signal from the (M + 1) th base station apparatus 14m + 1. The packet signal includes information on the remaining amount of the storage battery 22 acquired by the lighting device 16 (not shown) and an image captured by the lighting device 16 (not shown). As described above, the packet signal reaches the communication unit 30 by being transferred by the terminal device 12 or the base station device 14. The communication unit 30 outputs information about the remaining amount of the storage battery 22 and an image to the collection unit 40.
収集部40は、通信部30から、蓄電池22の残量に関する情報や、画像を受けつける。つまり、収集部40は、各基地局装置14から、当該基地局装置14を駆動させている蓄電池22の残量に関する情報を収集する。端末装置12を駆動させている蓄電池22の残量に関する情報についても同様である。収集部40は、蓄電池22の残量に関する情報を照明装置16単位で管理するために、これらの情報を記憶部38に記憶させる。また、収集部40は、画像を照明装置16単位で記憶部38に記憶させる。
The collection unit 40 receives information about the remaining amount of the storage battery 22 and images from the communication unit 30. That is, the collection unit 40 collects information on the remaining amount of the storage battery 22 that drives the base station device 14 from each base station device 14. The same applies to information relating to the remaining amount of the storage battery 22 that is driving the terminal device 12. The collection unit 40 stores these pieces of information in the storage unit 38 in order to manage information about the remaining amount of the storage battery 22 in units of the lighting device 16. In addition, the collection unit 40 stores the image in the storage unit 38 in units of the lighting device 16.
記憶部38は、収集部40からの指示に応じて、さまざまな情報や画像を記憶するための記憶媒体である。情報や画像はデジタルデータであるので、記憶部38は例えばハードディスクにて構成される。図4は、記憶部38に記憶されたテーブルのデータ構造を示す。図示のごとく、装置欄200、残量欄202、経路欄204が含まれる。装置欄200には、管理対象となる基地局装置14であって、かつ照明装置16に接続された基地局装置14が示されている。また、装置欄200には、管理対象となる端末装置12であって、かつ照明装置16に接続された端末装置12も示されている。残量欄202には、装置欄200に示された基地局装置14や端末装置12に接続された蓄電池22の残量が示される。経路欄204には、装置欄200に示された基地局装置14や端末装置12から制御装置10へ至る経路についての情報が示される。経路についての管理は、管理部32によってなされる。図3に戻る。
The storage unit 38 is a storage medium for storing various information and images according to instructions from the collection unit 40. Since information and images are digital data, the storage unit 38 is configured by, for example, a hard disk. FIG. 4 shows the data structure of the table stored in the storage unit 38. As shown, a device column 200, a remaining amount column 202, and a route column 204 are included. In the device column 200, a base station device 14 to be managed and a base station device 14 connected to the lighting device 16 is shown. The device column 200 also shows the terminal device 12 that is a management target and is connected to the lighting device 16. In the remaining capacity column 202, the remaining capacity of the storage battery 22 connected to the base station apparatus 14 and the terminal apparatus 12 shown in the apparatus column 200 is shown. In the path column 204, information about a path from the base station apparatus 14 or the terminal apparatus 12 shown in the apparatus column 200 to the control apparatus 10 is shown. Management of the route is performed by the management unit 32. Returning to FIG.
管理部32は、通信部30を介して、基地局間通信の経路を管理する。基地局間通信の経路とは、所定の基地局装置14と図1の第M+1基地局装置14m+1とを結ぶ経路である。基地局間通信の経路は、公知の技術によって、複数の基地局装置14間で設定される。管理部32は、図1の第M+1基地局装置14m+1から設定内容を受けつける。管理部32は、経路に関する情報を記憶部38に記憶させる。また、管理部32は、記憶部38に記憶されたテーブルをもとに、残量がしきい値よりも小さくなっている基地局装置14を特定する。管理部32は、特定した基地局装置14に接続された端末装置12を別の基地局装置14に接続させたり、特定した基地局装置14を回避するような経路を設定したりする。管理部32は、処理結果を指示部36へ出力する。
The management unit 32 manages the communication path between base stations via the communication unit 30. The inter-base station communication path is a path connecting the predetermined base station device 14 and the (M + 1) th base station device 14m + 1 in FIG. The communication path between base stations is set between a plurality of base station apparatuses 14 by a known technique. The management unit 32 receives setting contents from the (M + 1) th base station apparatus 14m + 1 in FIG. The management unit 32 stores information related to the route in the storage unit 38. Further, the management unit 32 specifies the base station device 14 whose remaining amount is smaller than the threshold value based on the table stored in the storage unit 38. The management unit 32 connects the terminal device 12 connected to the identified base station device 14 to another base station device 14 or sets a route that avoids the identified base station device 14. The management unit 32 outputs the processing result to the instruction unit 36.
指示部36は、管理部32から処理結果を受けつける。指示部36は、処理結果の実行を指示するためのパケット信号を生成し、パケット信号を通信部30へ出力する。ここで、パケット信号は、マルチキャスト送信されるので、パケット信号の宛先は、照明システム100に含まれた基地局装置14と端末装置12である。なお、管理部32は、特定した基地局装置14に関する情報を指示部36へ出力し、指示部36は、特定された基地局装置14の残量が少なくなっている旨をパケット信号に含めてもよい。その際、照明システム100に含まれた基地局装置14と端末装置12は、パケット信号に含まれた情報をもとに、特定した基地局装置14に接続された端末装置12を別の基地局装置14に接続させたり、特定した基地局装置14を回避するような経路を設定したりする処理を自律的に実行する。
The instruction unit 36 receives the processing result from the management unit 32. The instruction unit 36 generates a packet signal for instructing execution of the processing result, and outputs the packet signal to the communication unit 30. Here, since the packet signal is multicast-transmitted, the destination of the packet signal is the base station device 14 and the terminal device 12 included in the lighting system 100. The management unit 32 outputs information on the identified base station device 14 to the instruction unit 36, and the instruction unit 36 includes in the packet signal that the remaining amount of the identified base station device 14 is low. Also good. At that time, the base station device 14 and the terminal device 12 included in the illumination system 100 may connect the terminal device 12 connected to the identified base station device 14 to another base station based on the information included in the packet signal. A process of connecting to the device 14 or setting a route that avoids the identified base station device 14 is autonomously executed.
制御部42は、制御装置10全体の動作を制御する。また、制御部42は、ユーザとのインターフェイスを備え、インターフェイスを介してユーザからの指示を受けつける。前述のごとく、ユーザからの指示の一例が、図示しない照明装置16の照明部24を点灯すべき時刻に関する情報であり、図示しない照明装置16の照明部24を消灯すべき時刻に関する情報であってもよい。ここでは、説明を容易にするために、指示は、照明部24の動作に関する指示であるとする。消灯の場合は、図2(a)-(b)の照明部24における動作が異なるだけであり、それ以外では、点灯の場合と同様の動作が実行される。
The control unit 42 controls the operation of the entire control device 10. Moreover, the control part 42 is provided with the interface with a user, and receives the instruction | indication from a user via an interface. As described above, an example of an instruction from the user is information regarding the time when the lighting unit 24 of the lighting device 16 (not shown) should be turned on, and information regarding the time when the lighting unit 24 of the lighting device 16 (not shown) should be turned off. Also good. Here, for ease of explanation, it is assumed that the instruction is an instruction related to the operation of the illumination unit 24. When the light is turned off, only the operation in the illumination unit 24 in FIGS. 2A and 2B is different. Otherwise, the same operation as that when the light is turned on is executed.
図5は、基地局装置14の構成を示す。基地局装置14は、通信部60、処理部62、管理部66、制御部72、取得部74、導出部76、決定部78を含む。基地局装置14は、太陽光発電によって発電された電力を充電した蓄電池22に接続され、かつ蓄電池22によって駆動される。通信部60は、基地局間通信によって他の基地局装置14と通信するとともに、少なくともひとつの端末装置12とも通信可能である。通信部60は、周波数変換処理、変復調処理、増幅処理、AD変換処理、DA変換処理等を実行するが、これらには公知の技術が使用されればよいので、ここでは説明を省略する。このような処理によって、通信部60は、パケット信号を受信するとともに、パケット信号を送信する。このようなパケット信号には、例えば、点灯指示が含まれている。
FIG. 5 shows the configuration of the base station apparatus 14. The base station device 14 includes a communication unit 60, a processing unit 62, a management unit 66, a control unit 72, an acquisition unit 74, a derivation unit 76, and a determination unit 78. The base station device 14 is connected to and driven by the storage battery 22 charged with power generated by solar power generation. The communication unit 60 communicates with other base station apparatuses 14 by inter-base station communication and can also communicate with at least one terminal apparatus 12. The communication unit 60 performs a frequency conversion process, a modulation / demodulation process, an amplification process, an AD conversion process, a DA conversion process, and the like, and a known technique may be used for these, and a description thereof is omitted here. Through such processing, the communication unit 60 receives the packet signal and transmits the packet signal. Such a packet signal includes, for example, a lighting instruction.
処理部62は、図示しない照明装置16へ接続され、照明装置16に対する処理を実行する。処理部62は、通信部60において受信した点灯指示を受けつける。処理部62は、点灯指示をもとに、照明装置16へ点灯を指示する。処理部62は、蓄電池22の残量に関する情報の出力や、画像の出力を照明装置16に指示する。処理部62は、蓄電池22の残量に関する情報や、画像を照明装置16から受けつけると、蓄電池22の残量に関する情報や画像が含まれたパケット信号の生成を通信部60へ指示する。なお、基地局装置14が、図1の第M+1基地局装置14m+1に相当する場合、処理部62は、図示しない制御装置10とのインターフェイス機能を実行する。
The processing unit 62 is connected to the lighting device 16 (not shown) and executes processing for the lighting device 16. The processing unit 62 receives the lighting instruction received by the communication unit 60. The processing unit 62 instructs the lighting device 16 to turn on based on the lighting instruction. The processing unit 62 instructs the lighting device 16 to output information on the remaining amount of the storage battery 22 or output an image. When the processing unit 62 receives information about the remaining amount of the storage battery 22 or an image from the lighting device 16, the processing unit 62 instructs the communication unit 60 to generate a packet signal including the information about the remaining amount of the storage battery 22 and the image. When the base station device 14 corresponds to the (M + 1) th base station device 14m + 1 in FIG. 1, the processing unit 62 performs an interface function with the control device 10 (not shown).
管理部66は、通信部60と通信している端末装置12の情報や、基地局間通信の経路に関する情報を管理する。管理部66は、基地局間通信の経路が変更された場合などに、情報を更新する。取得部74は、管理部66から、基地局間通信の経路に含まれた他の基地局装置14に関する情報を取得する。ここで、経路には、複数の基地局装置14が含まれていることもある。取得部74は、処理部62、通信部60を介して、複数の基地局装置14のそれぞれに対して、残量に関する情報を通知させるための指示が含まれたパケット信号を送信する。その後、取得部74は、複数の基地局装置14のそれぞれから、基地局装置14を駆動させている蓄電池22の残量に関する情報を取得する。
The management unit 66 manages information on the terminal device 12 communicating with the communication unit 60 and information on the path of communication between base stations. The management unit 66 updates the information when the communication path between base stations is changed. The acquisition unit 74 acquires information on the other base station apparatus 14 included in the path for communication between base stations from the management unit 66. Here, the path may include a plurality of base station apparatuses 14. The acquisition unit 74 transmits a packet signal including an instruction for notifying each of the plurality of base station apparatuses 14 of information regarding the remaining amount via the processing unit 62 and the communication unit 60. Thereafter, the acquisition unit 74 acquires information regarding the remaining amount of the storage battery 22 that is driving the base station device 14 from each of the plurality of base station devices 14.
その際、本基地局装置14と直接通信できない基地局装置14からのパケット信号は、それらの間の基地局装置14によって転送される。このような転送には公知の技術が使用されればよい。図6は、取得部74に記憶されたテーブルのデータ構造を示す。図示のごとく、基地局装置欄210、残量欄212が含まれる。基地局装置欄210には、経路に含まれる基地局装置14が示される。残量欄212には、基地局装置欄210に示された基地局装置14に対応した残量が示される。なお、テーブルに、本基地局装置14を駆動している蓄電池22の残量が示されてもよい。その際、取得部74は、処理部62を介して、図示しない照明装置16から残量に関する情報も取得している。図5に戻る。取得部74は、テーブルを更新したときに、その旨を導出部76に通知する。
At that time, a packet signal from the base station apparatus 14 that cannot directly communicate with the base station apparatus 14 is transferred by the base station apparatus 14 between them. A known technique may be used for such transfer. FIG. 6 shows the data structure of the table stored in the acquisition unit 74. As shown, a base station device column 210 and a remaining amount column 212 are included. Base station apparatus column 210 shows base station apparatuses 14 included in the route. The remaining amount column 212 indicates the remaining amount corresponding to the base station device 14 indicated in the base station device column 210. The remaining amount of the storage battery 22 driving the base station device 14 may be indicated on the table. At that time, the acquisition unit 74 also acquires information regarding the remaining amount from the lighting device 16 (not shown) via the processing unit 62. Returning to FIG. When the acquisition unit 74 updates the table, the acquisition unit 74 notifies the deriving unit 76 to that effect.
導出部76は、取得部74からの通知を受けつけると、取得部74に記憶されたテーブルから、残量に関する情報を抽出する。ここでは、複数の基地局装置14のそれぞれに対する残量が抽出される。導出部76は、抽出した情報をもとに、経路の残量を導出する。具体的に説明すると、導出部76は、複数の残量に関する情報のうちのひとつを選択する。例えば、導出部76は、複数の残量に関する情報のうち、最小の残量を選択する。また、導出部76は、選択した残量を経路の残量とする。なお、最小の残量の代わりに、最大の残量が選択されてもよい。あるいは、導出部76は、複数の残量の値に対する統計処理値を導出する。例えば、導出部76は、複数の残量の値に対する平均値を導出する。その際、導出部76は、統計処理値を経路の残量とする。なお、平均値の代わりに、中央値等であってもよい。導出部76は、導出した経路の残量を決定部78へ出力する。
When the derivation unit 76 receives the notification from the acquisition unit 74, the derivation unit 76 extracts information on the remaining amount from the table stored in the acquisition unit 74. Here, the remaining amount for each of the plurality of base station apparatuses 14 is extracted. The deriving unit 76 derives the remaining amount of the route based on the extracted information. More specifically, the derivation unit 76 selects one of information regarding a plurality of remaining amounts. For example, the deriving unit 76 selects the minimum remaining amount from the information regarding the plurality of remaining amounts. The deriving unit 76 sets the selected remaining amount as the remaining amount of the route. Note that the maximum remaining amount may be selected instead of the minimum remaining amount. Alternatively, the deriving unit 76 derives statistical processing values for a plurality of remaining amount values. For example, the deriving unit 76 derives an average value for a plurality of remaining amount values. At that time, the derivation unit 76 sets the statistical processing value as the remaining amount of the route. Note that a median value or the like may be used instead of the average value. The deriving unit 76 outputs the remaining amount of the derived route to the determining unit 78.
決定部78は、導出部76から、経路の残量を受けつける。決定部78は、経路の残量をもとに、ビーコン信号の報知周期を決定する。ここで、決定部78は、報知周期を決定するためのテーブルを予め記憶する。図7は、決定部78に記憶されたテーブルのデータ構造を示す。図示のごとく、残量に対するしきい値欄220、報知周期欄222が含まれる。残量に対するしきい値欄220には、しきい値E1、E2、E3が示されている。ここでは、E1>E2>E3であるとする。報知周期欄222には、ビーコン信号の報知周期の値が示されている。ここでは、F1<F2<F3であるとする。このようなテーブルによって、残量が大きくなるほど、報知周期が短くなる。また、残量が小さくなるほど、報知周期が長くなる。さらに、残量がしきい値E3よりも小さくなると、ビーコン信号の報知が停止される。図5に戻る。決定部78は、テーブルに示されたしきい値と、経路の残量とを比較することによって報知周期を決定する。決定部78は、報知周期を通信部60へ出力する。
The determination unit 78 receives the remaining amount of the route from the derivation unit 76. The determination unit 78 determines the notification period of the beacon signal based on the remaining amount of the route. Here, the determination unit 78 stores a table for determining the notification cycle in advance. FIG. 7 shows the data structure of the table stored in the determination unit 78. As illustrated, a threshold value column 220 and a notification cycle column 222 for the remaining amount are included. In the threshold value column 220 for the remaining amount, threshold values E1, E2, and E3 are shown. Here, it is assumed that E1> E2> E3. In the notification cycle column 222, the value of the notification cycle of the beacon signal is shown. Here, it is assumed that F1 <F2 <F3. With such a table, the notification cycle becomes shorter as the remaining amount becomes larger. Moreover, the notification cycle becomes longer as the remaining amount becomes smaller. Further, when the remaining amount becomes smaller than the threshold value E3, the notification of the beacon signal is stopped. Returning to FIG. The determination unit 78 determines the notification cycle by comparing the threshold values shown in the table with the remaining amount of the route. The determination unit 78 outputs the notification cycle to the communication unit 60.
処理部62は、ビーコン信号を生成し、ビーコン信号を通信部60へ出力する。通信部60は、決定部78において決定した報知周期にて、ビーコン信号を報知する。図8は、通信部60から送信されるビーコン信号のフォーマットを示す。フレーム制御、デュレーション/ID、宛先アドレス、送信元アドレス、BBSID、シーケンス制御、フレーム・ボディ、FCSが配置される。ここで、宛先アドレス、送信元アドレスは、MACアドレスとして示される。また、フレーム・ボディは、端末装置12に報知すべき情報に相当する。図5に戻る。制御部72は、基地局装置14全体の動作タイミングを制御する。
The processing unit 62 generates a beacon signal and outputs the beacon signal to the communication unit 60. The communication unit 60 notifies the beacon signal at the notification cycle determined by the determination unit 78. FIG. 8 shows a format of a beacon signal transmitted from the communication unit 60. Frame control, duration / ID, destination address, source address, BBSID, sequence control, frame body, and FCS are arranged. Here, the destination address and the source address are indicated as MAC addresses. The frame body corresponds to information to be notified to the terminal device 12. Returning to FIG. The control unit 72 controls the operation timing of the entire base station apparatus 14.
図9は、端末装置12の構成を示す。端末装置12は、通信部80、処理部82、管理部84、制御部86を含む。端末装置12は、太陽光発電によって発電された電力を充電した蓄電池22に接続され、かつ蓄電池22によって駆動される。通信部80は、図5の通信部60と同様の処理を実行する。なお、通信部80は、通信部60と異なって基地局間通信を実行しない。ここで、通信部80の通信対象は、基地局装置14である。
FIG. 9 shows the configuration of the terminal device 12. The terminal device 12 includes a communication unit 80, a processing unit 82, a management unit 84, and a control unit 86. The terminal device 12 is connected to and driven by the storage battery 22 charged with power generated by solar power generation. The communication unit 80 executes the same processing as that of the communication unit 60 in FIG. Unlike the communication unit 60, the communication unit 80 does not perform inter-base station communication. Here, the communication target of the communication unit 80 is the base station device 14.
つまり、通信部80は、基地局間通信を実行可能な基地局装置14と通信し、基地局装置14からの基地局間通信によって形成される経路を介して、制御装置10と通信する。このようにして、通信部80は、基地局装置14からのパケット信号を受信する。パケット信号には、例えば、点灯指示が含まれる。また、通信部80は、基地局装置14へパケット信号を送信する。
That is, the communication unit 80 communicates with the base station device 14 capable of performing inter-base station communication, and communicates with the control device 10 via a path formed by the inter-base station communication from the base station device 14. In this way, the communication unit 80 receives the packet signal from the base station device 14. The packet signal includes, for example, a lighting instruction. In addition, the communication unit 80 transmits a packet signal to the base station device 14.
処理部82は、図5の処理部62と同様の処理を実行する。通信部80は、基地局装置14からのビーコン信号を受信する。処理部82は、ビーコン信号に含まれたBBSIDをもとに、報知元の基地局装置14に接続可能であるかを判定する。接続可能である場合、処理部82は、通信部80に対して、基地局装置14との接続処理を実行させる。接続処理として公知の技術が使用される。管理部84は、通信部80での通信対象を制御する。制御部86は、端末装置12全体の動作タイミングを制御する。
The processing unit 82 performs the same processing as the processing unit 62 in FIG. The communication unit 80 receives a beacon signal from the base station device 14. Based on the BBSID included in the beacon signal, the processing unit 82 determines whether connection to the base station device 14 that is the notification source is possible. When the connection is possible, the processing unit 82 causes the communication unit 80 to execute a connection process with the base station device 14. A known technique is used as the connection process. The management unit 84 controls a communication target in the communication unit 80. The control unit 86 controls the operation timing of the entire terminal device 12.
以上の構成による照明システム100の動作概要を説明する。図10は、照明システム100による通信手順を示すシーケンス図である。ここで、端末装置12が、照明システム100に新たに加入しようとしており、その周囲に第1基地局装置14aと第5基地局装置14eとが設置されている。また、第1基地局装置14aから第M+1基地局装置14m+1までの経路と、第5基地局装置14eから第M+1基地局装置14m+1までの経路とは異なっているものとする。第1基地局装置14aは、報知周期を決定し(S10)、第5基地局装置14eも、報知周期を決定する(S12)。ここで、第1基地局装置14aによって導出された経路の残量が、第5基地局装置14eによって導出された経路の残量よりも多かったとする。第1基地局装置14aは、ビーコン信号を報知する(S14)。端末装置12は、ビーコン信号をもとに、接続先を第1基地局装置14aに決定する(S16)。第1基地局装置14aと端末装置12とは、接続処理を実行する(S18)。第1基地局装置14aと端末装置12とは、通信を実行する(S20)。その後、第5基地局装置14eは、ビーコン信号を報知する(S22)。
An outline of the operation of the illumination system 100 configured as above will be described. FIG. 10 is a sequence diagram illustrating a communication procedure performed by the illumination system 100. Here, the terminal device 12 is about to newly join the lighting system 100, and the first base station device 14a and the fifth base station device 14e are installed around it. Further, it is assumed that the path from the first base station apparatus 14a to the (M + 1) th base station apparatus 14m + 1 is different from the path from the fifth base station apparatus 14e to the (M + 1) th base station apparatus 14m + 1. The first base station device 14a determines the notification cycle (S10), and the fifth base station device 14e also determines the notification cycle (S12). Here, it is assumed that the remaining amount of the route derived by the first base station device 14a is larger than the remaining amount of the route derived by the fifth base station device 14e. The 1st base station apparatus 14a alert | reports a beacon signal (S14). The terminal device 12 determines the connection destination as the first base station device 14a based on the beacon signal (S16). The first base station device 14a and the terminal device 12 execute a connection process (S18). The first base station apparatus 14a and the terminal apparatus 12 perform communication (S20). Thereafter, the fifth base station apparatus 14e notifies a beacon signal (S22).
次に変形例を説明する。変形例は、実施例と同様に、基地局装置と端末装置とが含まれた照明システムに関する。実施例では、複数の基地局装置の蓄電池における残量をもとに、経路の残量を導出し、経路の残量をもとに報知周期を決定している。一方、変形例は、実施例よりも基地局装置の処理を簡易にすることを目的とする。変形例に係る基地局装置は、蓄電池の残量を取得する。また、基地局装置は、残量をもとに報知周期を決定する。つまり、変形例に係る基地局装置は、他の基地局装置における蓄電池の残量を使用せずに、報知周期を決定する。変形例に係る照明システム100は図1と同様のタイプであり、制御装置10は図3と同様のタイプであり、端末装置12は図9と同様のタイプである。以下では、実施例との差異を中心に説明する。
Next, a modified example will be described. The modification relates to an illumination system including a base station device and a terminal device, as in the embodiment. In the embodiment, the remaining amount of the route is derived based on the remaining amount in the storage battery of the plurality of base station apparatuses, and the notification cycle is determined based on the remaining amount of the route. On the other hand, a modification aims at simplifying the processing of the base station apparatus as compared with the embodiment. The base station apparatus which concerns on a modification acquires the residual amount of a storage battery. Further, the base station apparatus determines the notification cycle based on the remaining amount. That is, the base station apparatus which concerns on a modification determines a alerting | reporting period, without using the residual amount of the storage battery in another base station apparatus. The illumination system 100 according to the modification is the same type as that in FIG. 1, the control device 10 is the same type as that in FIG. 3, and the terminal device 12 is the same type as that in FIG. Below, it demonstrates centering on the difference with an Example.
図11は、本発明の変形例に係る基地局装置14の構成を示す。基地局装置14では、図5の基地局装置14と比較して、導出部76が含まれない。取得部74は、処理部62を介して、図示しない照明装置16の蓄電池22における残量に関する情報を取得する。取得部74は、残量に関する情報を決定部78へ出力する。決定部78は、取得部74から、残量に関する情報を受けつける。決定部78は、残量をもとに、ビーコン信号の報知周期を決定する。ビーコン信号の報知周期を決定するための決定部78の処理は、実施例と同様であるので、ここでは説明を省略する。通信部60は、決定部78において決定した報知周期にて、ビーコン信号を報知する。
FIG. 11 shows the configuration of the base station apparatus 14 according to a modification of the present invention. The base station device 14 does not include the derivation unit 76 as compared with the base station device 14 of FIG. The acquisition unit 74 acquires information about the remaining amount in the storage battery 22 of the lighting device 16 (not shown) via the processing unit 62. The acquisition unit 74 outputs information regarding the remaining amount to the determination unit 78. The determination unit 78 receives information regarding the remaining amount from the acquisition unit 74. The determination unit 78 determines the notification period of the beacon signal based on the remaining amount. Since the process of the determination part 78 for determining the alerting | reporting period of a beacon signal is the same as that of an Example, description is abbreviate | omitted here. The communication unit 60 notifies the beacon signal at the notification cycle determined by the determination unit 78.
次に別の変形例を説明する。別の変形例は、これまでと同様に、基地局装置と端末装置とが含まれた照明システムに関する。これまでは、残量に応じて報知周期を変更していたが、別の変形例では、報知周期を変更させない。前述のごとく、残量の通知は、既に規定されている信号によってなされることが望ましい。これに対応するために、別の変形例に係る基地局装置は、接続処理のためにビーコン信号に挿入すべきBSSID(以下、「第1BSSID」という)とは別のBSSID(以下、「第2BSSID」という)を規定する。第2BBSIDは、残量に応じて変わるように定められており、残量の値と第2BBSIDの値とは、1対1で予め定められている。つまり、第2BBSIDを取得すれば、蓄電池の残量が理解される。基地局装置は、ビーコン信号に第1BBSIDを挿入せず、第2BBSIDを挿入する。
Next, another modification will be described. Another modification relates to a lighting system including a base station device and a terminal device, as before. Until now, the notification cycle has been changed according to the remaining amount, but in another modification, the notification cycle is not changed. As described above, it is desirable that notification of the remaining amount is made by a signal that has already been defined. In order to cope with this, a base station apparatus according to another modification example has a BSSID (hereinafter referred to as “second BSSID”) different from a BSSID (hereinafter referred to as “first BSSID”) to be inserted into a beacon signal for connection processing. "). The second BBSID is determined so as to change according to the remaining amount, and the remaining amount value and the second BBSID value are determined in a one-to-one relationship. That is, if the second BBSID is acquired, the remaining capacity of the storage battery is understood. The base station device inserts the second BBSID in the beacon signal without inserting the first BBSID.
端末装置は、ビーコン信号を受信すると、第2BBSIDをもとに残量を推定する。また、端末装置は、ビーコン信号に含まれた送信元アドレスを抽出する。端末装置は、送信元アドレスであるMACアドレスと第1BSSIDとの対応を予め記憶しており、抽出した下送信元アドレスから第1BSSIDを特定する。端末装置は、残量の大きな基地局装置を選択し、当該基地局装置に対して、第1BSSIDを使用して接続処理を実行する。別の変形例に係る照明システム100は図1と同様のタイプであり、制御装置10は図3と同様のタイプであり、端末装置12は図9と同様のタイプである。以下では、これまでとの差異を中心に説明する。
When receiving the beacon signal, the terminal device estimates the remaining amount based on the second BBSID. Further, the terminal device extracts the transmission source address included in the beacon signal. The terminal device stores in advance the correspondence between the MAC address that is the transmission source address and the first BSSID, and identifies the first BSSID from the extracted lower transmission source address. The terminal apparatus selects a base station apparatus with a large remaining amount, and executes connection processing for the base station apparatus using the first BSSID. The illumination system 100 according to another modification is the same type as that shown in FIG. 1, the control device 10 is the same type as that shown in FIG. 3, and the terminal device 12 is the same type as that shown in FIG. Below, it demonstrates centering on the difference from before.
図12は、本発明の別の変形例に係る基地局装置14の構成を示す。基地局装置14は、通信部60、処理部62、管理部66、制御部72を含み、処理部62は、設定部110、生成部112を含む。処理部62は、図11の取得部74と同様に、図示しない照明装置16の蓄電池22における残量に関する情報を取得する。あるいは、処理部62は、図5の取得部74、導出部76と同様に、経路の残量を導出してもよい。ここでは、蓄電池22における残量と経路の残量とを区別せずに単に残量というものとする。処理部62は、残量を設定部110に出力する。
FIG. 12 shows a configuration of a base station apparatus 14 according to another modification of the present invention. The base station apparatus 14 includes a communication unit 60, a processing unit 62, a management unit 66, and a control unit 72. The processing unit 62 includes a setting unit 110 and a generation unit 112. The processing unit 62 acquires information related to the remaining amount in the storage battery 22 of the lighting device 16 (not shown), similarly to the acquisition unit 74 in FIG. Or the process part 62 may derive | lead-out the residual amount of a path | route similarly to the acquisition part 74 and the derivation | leading-out part 76 of FIG. Here, the remaining amount in the storage battery 22 and the remaining amount of the route are not distinguished from each other and are simply referred to as the remaining amount. The processing unit 62 outputs the remaining amount to the setting unit 110.
設定部110は、処理部62から受けつけた残量をもとに、第1BSSIDとは異なった第2BSSIDを設定する。第1BSSIDとは、前述のごとく、接続処理に使用される識別子であり、本基地局装置14を識別するための識別子ともいえる。図13は、設定部110に記憶されたテーブルのデータ構造を示す。図示のごとく、残量欄230、第2BBSID欄232が含まれる。残量欄230には、処理部62から受けつけうる残量が示される。第2BBSID欄232には、残量に対応した第2BSSIDが示されている。図12に戻る。設定部110は、テーブルをもとに、残量から第2BSSIDを特定する。設定部110は、第2BSSIDを生成部112へ出力する。
The setting unit 110 sets a second BSSID different from the first BSSID based on the remaining amount received from the processing unit 62. As described above, the first BSSID is an identifier used for connection processing, and can be said to be an identifier for identifying the base station apparatus 14. FIG. 13 shows the data structure of the table stored in the setting unit 110. As shown, a remaining amount column 230 and a second BBSID column 232 are included. The remaining amount column 230 shows the remaining amount that can be received from the processing unit 62. In the second BBSID column 232, the second BSSID corresponding to the remaining amount is shown. Returning to FIG. The setting unit 110 identifies the second BSSID from the remaining amount based on the table. The setting unit 110 outputs the second BSSID to the generation unit 112.
生成部112は、設定部110から、第2BSSIDを受けつける。生成部112は、図8に示されたビーコン信号を生成する。ここで、生成部112は、図8のBBSIDの領域に、第2BBSIDを挿入する。一方、生成部112は、ビーコン信号に第1BSSIDを含めない。また、生成部112は、図8の送信元アドレスの領域に、本基地局装置14に付与されたMACアドレスを挿入する。さらに、生成部112は、図8のフレーム・ボディの領域に、端末装置12に通知すべき情報を挿入する。生成部112は、通信部60にビーコン信号を報知させる。
The generation unit 112 receives the second BSSID from the setting unit 110. The generation unit 112 generates a beacon signal illustrated in FIG. Here, the generation unit 112 inserts the second BBSID in the BBSID area of FIG. On the other hand, the generation unit 112 does not include the first BSSID in the beacon signal. Further, the generation unit 112 inserts the MAC address assigned to the base station apparatus 14 in the source address area of FIG. Further, the generation unit 112 inserts information to be notified to the terminal device 12 in the frame body area of FIG. The generation unit 112 causes the communication unit 60 to notify a beacon signal.
図9に示された端末装置12の通信部80は、ビーコン信号を順次受信する。処理部82は、各ビーコン信号から第2BSSIDと送信アドレスを抽出する。処理部82は、送信アドレスであるMACアドレスと第1BSSIDとの対応を予め記憶する。図14は、本発明の別の変形例に係る端末装置12の処理部82に記憶されたテーブルのデータ構造を示す。図示のごとく、送信元アドレス欄240、第1BBSID欄242が含まれる。送信元アドレス欄240には、送信元アドレスであるMACアドレスが示されており、第1BBSID欄242には、送信元アドレス欄240のMACアドレスに対応した第1BSSIDが示されている。ここでは、当該端末装置12が接続可能な第1BSSIDのみがテーブルに含まれているものとする。図9に戻る。
The communication unit 80 of the terminal device 12 shown in FIG. 9 sequentially receives beacon signals. The processing unit 82 extracts the second BSSID and the transmission address from each beacon signal. The processing unit 82 stores in advance the correspondence between the MAC address that is the transmission address and the first BSSID. FIG. 14 shows a data structure of a table stored in the processing unit 82 of the terminal device 12 according to another modification of the present invention. As shown, a source address field 240 and a first BBSID field 242 are included. The source address column 240 shows the MAC address that is the source address, and the first BBSID column 242 shows the first BSSID corresponding to the MAC address in the source address column 240. Here, it is assumed that only the first BSSID to which the terminal device 12 can be connected is included in the table. Returning to FIG.
処理部82は、テーブルをもとに、MACアドレスを第1BSSIDに変換する。なお、MACアドレスがテーブルに示されていない場合、処理部82は、当該MACアドレスが含まれたビーコン信号を破棄する。また、処理部82は、第2BSSIDをもとに、基地局装置14における蓄電池22の残量あるいは経路の残量を特定する。さらに、処理部82は、変換した第1BSSIDのうち、残量が最大のものを選択する。つまり、処理部82は、ビーコン信号に含まれたMACアドレスから基地局装置14の第1BSSIDを特定する。端末装置12の処理部82と基地局装置14の処理部62とは、第1BSSIDによる接続処理を実行する。接続処理として公知の技術が使用されればよい。
The processing unit 82 converts the MAC address to the first BSSID based on the table. When the MAC address is not shown in the table, the processing unit 82 discards the beacon signal including the MAC address. Moreover, the process part 82 specifies the residual amount of the storage battery 22 in the base station apparatus 14, or the residual amount of a path | route based on 2nd BSSID. Further, the processing unit 82 selects the converted first BSSID with the largest remaining amount. That is, the processing unit 82 specifies the first BSSID of the base station device 14 from the MAC address included in the beacon signal. The processing unit 82 of the terminal device 12 and the processing unit 62 of the base station device 14 execute a connection process using the first BSSID. A known technique may be used as the connection process.
図15は、本発明の別の変形例に係る端末装置12による通信手順を示すフローチャートである。通信部80は、複数のビーコン信号を受信する(S50)。ビーコン信号の中に記憶されていないMACアドレスがあれば(S52のY)、処理部82は、記憶されていないMACアドレスが含まれたビーコン信号を破棄する(S54)。一方、ビーコン信号の中に記憶されていないMACアドレスがなければ(S52のN)、ステップ54はスキップされる。処理部82は、最大残量に対応した第2BSSIDが含まれたビーコン信号を選択する(S56)。処理部82は、第1BSSIDを特定する(S58)。処理部82、通信部80は、第1BSSIDを使用して接続処理を実行する(S60)。
FIG. 15 is a flowchart showing a communication procedure by the terminal device 12 according to another modification of the present invention. The communication unit 80 receives a plurality of beacon signals (S50). If there is an unstored MAC address in the beacon signal (Y in S52), the processing unit 82 discards the beacon signal including the unstored MAC address (S54). On the other hand, if there is no unstored MAC address in the beacon signal (N in S52), step 54 is skipped. The processing unit 82 selects a beacon signal including the second BSSID corresponding to the maximum remaining amount (S56). The processing unit 82 specifies the first BSSID (S58). The processing unit 82 and the communication unit 80 perform connection processing using the first BSSID (S60).
次にさらに別の変形例を説明する。さらに別の変形例は、これまでと同様に、基地局装置と端末装置とが含まれた照明システムに関する。さらに別の変形例に係る基地局装置は、別の変形例と同様に、第1BSSIDの代わりに、第2BSSIDをビーコン信号に挿入する。一方、さらに別の変形例に係る基地局装置は、別の変形例とは異なり、制御装置までのホップ数を第2BBSIDに反映させる。端末装置は、第2BBSIDをもとに、ホップ数が小さくなるような基地局装置を選択する。別の変形例に係る照明システム100は図1と同様のタイプであり、制御装置10は図3と同様のタイプであり、基地局装置14は図12と同様のタイプであり、端末装置12は図9と同様のタイプである。以下では、これまでとの差異を中心に説明する。
Next, yet another modification will be described. Still another modified example relates to an illumination system including a base station device and a terminal device as before. Furthermore, the base station apparatus which concerns on another modification inserts 2nd BSSID in a beacon signal instead of 1st BSSID similarly to another modification. On the other hand, a base station apparatus according to yet another modification reflects the number of hops to the control apparatus in the second BBSID, unlike another modification. The terminal device selects a base station device that reduces the number of hops based on the second BBSID. The lighting system 100 according to another modification is the same type as that in FIG. 1, the control device 10 is the same type as in FIG. 3, the base station device 14 is the same type as in FIG. 12, and the terminal device 12 is It is the same type as FIG. Below, it demonstrates centering on the difference from before.
図12の処理部62は、通信部60を介して、第M+1基地局装置14m+1までの経路におけるホップ数に関する情報を取得する。これは、本基地局装置14から制御装置10までの経路のホップ数ともいえる。なお、ホップ数の取得のために、基地局間通信における公知の技術が使用されればよいので、ここでは説明を省略する。処理部62は、ホップ数に関する情報を設定部110に出力する。
The processing unit 62 in FIG. 12 acquires information regarding the number of hops in the route to the (M + 1) th base station apparatus 14m + 1 via the communication unit 60. This can be said to be the number of hops in the route from the base station apparatus 14 to the control apparatus 10. In addition, since the well-known technique in the communication between base stations should just be used for acquisition of the number of hops, description is abbreviate | omitted here. The processing unit 62 outputs information regarding the number of hops to the setting unit 110.
設定部110は、処理部62から受けつけたホップ数に関する情報をもとに、第1BSSIDとは異なった第2BSSIDを設定する。図16は、本発明のさらに別の変形例に係る基地局装置14の設定部110に記憶されたテーブルのデータ構造を示す。図示のごとく、ホップ数欄234、第2BBSID欄232が含まれる。ホップ数欄234には、処理部62から受けつけうるホップ数が示される。第2BBSID欄232には、残量に対応した第2BSSIDが示されている。図12に戻る。設定部110は、テーブルをもとに、ホップ数から第2BSSIDを特定する。設定部110は、第2BSSIDを生成部112へ出力する。生成部112の処理はこれまでと同様である。図9に示された端末装置12の通信部80、処理部82は、これまでと同様の処理を実行する。ここで、処理部82は、ホップ数が最小になっている第1BSSIDを選択する。これに続く、処理部82および処理部62の処理も、これまでと同様である。
The setting unit 110 sets a second BSSID different from the first BSSID based on the information regarding the number of hops received from the processing unit 62. FIG. 16 shows a data structure of a table stored in the setting unit 110 of the base station apparatus 14 according to still another modification of the present invention. As illustrated, a hop number column 234 and a second BBSID column 232 are included. The hop number column 234 indicates the number of hops that can be received from the processing unit 62. In the second BBSID column 232, the second BSSID corresponding to the remaining amount is shown. Returning to FIG. The setting unit 110 identifies the second BSSID from the number of hops based on the table. The setting unit 110 outputs the second BSSID to the generation unit 112. The processing of the generation unit 112 is the same as before. The communication unit 80 and the processing unit 82 of the terminal device 12 illustrated in FIG. 9 execute the same processing as before. Here, the processing unit 82 selects the first BSSID having the smallest number of hops. Subsequent processing of the processing unit 82 and the processing unit 62 is the same as before.
本発明の実施例によれば、経路の残量に応じてビーコン信号の報知周期を変更するので、ビーコン信号の内容を変更しなくても、経路の残量に関する情報を通知できる。また、経路の残量が大きくなるほど、報知周期を短くするので、ビーコン信号を受信させやすくできる。また、ビーコン信号が受信されやすくなるので、残量が大きい経路を選択させやすくできる。残量が大きい経路が選択されやすくなるので、基地局間通信を安定して維持できる。また、経路における残量として、複数の蓄電池の残量に対する平均値を使用するので、経路における残量を容易に導出できる。また、経路における残量として、複数の蓄電池の残量のうちの最小値を選択するので、経路における残量を容易に導出できる。
According to the embodiment of the present invention, the notification period of the beacon signal is changed according to the remaining amount of the route, so that information on the remaining amount of the route can be notified without changing the content of the beacon signal. Further, since the notification cycle is shortened as the remaining amount of the route increases, it is possible to easily receive the beacon signal. In addition, since a beacon signal is easily received, it is possible to easily select a route with a large remaining amount. Since a route with a large remaining amount is easily selected, communication between base stations can be stably maintained. Moreover, since the average value with respect to the remaining amount of the plurality of storage batteries is used as the remaining amount in the route, the remaining amount in the route can be easily derived. Further, since the minimum value among the remaining amounts of the plurality of storage batteries is selected as the remaining amount in the route, the remaining amount in the route can be easily derived.
また、蓄電池の残量に応じてビーコン信号の報知周期を変更するので、ビーコン信号の内容を変更しなくても、蓄電池の残量に関する情報を通知できる。また、蓄電池の残量が大きくなるほど、報知周期を短くするので、ビーコン信号を受信させやすくできる。また、蓄電池の残量を使用するので、処理を簡易にできる。また、残量がしきい値よりも小さくなると、ビーコン信号の報知を停止するので、基地局装置の駆動期間を延長できる。また、ビーコン信号の報知周期を変更するだけなので、無線LANにおいて規定された信号フォーマットの変更を少なくしながら、基地局装置に関する情報を端末装置へ通知できる。
In addition, since the notification cycle of the beacon signal is changed according to the remaining amount of the storage battery, information on the remaining amount of the storage battery can be notified without changing the content of the beacon signal. Moreover, since a notification period is shortened, so that the remaining amount of a storage battery becomes large, it can be made to receive a beacon signal easily. Further, since the remaining amount of the storage battery is used, the processing can be simplified. Further, when the remaining amount becomes smaller than the threshold value, the notification of the beacon signal is stopped, so that the drive period of the base station apparatus can be extended. In addition, since only the beacon signal notification period is changed, information on the base station apparatus can be notified to the terminal apparatus while reducing changes in the signal format defined in the wireless LAN.
また、基地局装置を識別するための第1BSSIDとは異なった第2BSSIDを使用するので、BSSIDによって情報を送信できる。また、残量をもとに第2BSSIDを変更するので、ビーコン信号のフォーマットを変更せずに、残量に関する情報をビーコン信号にて送信できる。また、残量を第2BSSIDに反映させるので、残量を正確に通知できる。また、ビーコン信号には、基地局装置のMACアドレスを含めるので、ビーコン信号の送信元を明確にできる。また、ビーコン信号の送信元が明確にされるので、端末装置は、第1BSSIDを特定できる。また、第1BSSIDが特定されるので、第1BSSIDを使用した接続処理が実行できる。また、ホップ数をもとに第2BSSIDを変更するので、ビーコン信号のフォーマットを変更せずに、ホップ数に関する情報をビーコン信号にて送信できる。また、ホップ数を第2BSSIDに反映させるので、ホップ数を正確に通知できる。
Further, since the second BSSID different from the first BSSID for identifying the base station apparatus is used, information can be transmitted by the BSSID. Further, since the second BSSID is changed based on the remaining amount, information regarding the remaining amount can be transmitted by the beacon signal without changing the format of the beacon signal. Further, since the remaining amount is reflected in the second BSSID, the remaining amount can be accurately notified. Moreover, since the MAC address of the base station apparatus is included in the beacon signal, the transmission source of the beacon signal can be clarified. Moreover, since the transmission source of the beacon signal is clarified, the terminal device can specify the first BSSID. Further, since the first BSSID is specified, connection processing using the first BSSID can be executed. Further, since the second BSSID is changed based on the number of hops, information regarding the number of hops can be transmitted by the beacon signal without changing the format of the beacon signal. Moreover, since the number of hops is reflected in the second BSSID, the number of hops can be accurately notified.
以上、本発明を実施例をもとに説明した。この実施例は例示であり、それらの各構成要素や各処理プロセスの組合せにいろいろな変形例が可能なこと、またそうした変形例も本発明の範囲にあることは当業者に理解されるところである。
The present invention has been described based on the embodiments. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to the combination of each component and each processing process, and such modifications are also within the scope of the present invention. .
本発明のさらに別の変形例において、基地局装置14から報知されるビーコン信号によって、ホップ数に関する情報が通知されている。しかしながらこれに限らず例えば、基地局装置14から報知されるビーコン信号によって、ホップ数に関する情報に加えて、残量に関する情報が通知されてもよい。その場合、図12の基地局装置14と図15の基地局装置14とが組み合わされた構成になる。図5の取得部74は、基地局間通信によって形成された経路に含まれた各基地局装置14を駆動させている蓄電池の残量に関する情報を取得する。導出部76は、取得部74において取得した情報をもとに、経路の残量を導出する。前述のごとく、その際、平均等の演算がなされる。決定部78は、導出部76において導出した残量をもとに、ビーコン信号の報知周期を決定する。ここで、決定部78は、残量がしきい値よりも小さくなると、ビーコン信号の報知停止を決定してもよい。通信部60は、決定部78において決定した報知周期にて、ビーコン信号を報知する。
In yet another modification of the present invention, information on the number of hops is notified by a beacon signal broadcast from the base station device 14. However, the present invention is not limited to this. For example, in addition to information related to the number of hops, information related to the remaining amount may be notified by a beacon signal notified from the base station device 14. In that case, the base station apparatus 14 of FIG. 12 and the base station apparatus 14 of FIG. 15 are combined. The acquisition unit 74 in FIG. 5 acquires information on the remaining amount of the storage battery that drives each base station device 14 included in the path formed by the inter-base station communication. The deriving unit 76 derives the remaining amount of the route based on the information acquired by the acquiring unit 74. As described above, at this time, calculation such as averaging is performed. The determining unit 78 determines the notification period of the beacon signal based on the remaining amount derived by the deriving unit 76. Here, the determination unit 78 may determine to stop the notification of the beacon signal when the remaining amount becomes smaller than the threshold value. The communication unit 60 notifies the beacon signal at the notification cycle determined by the determination unit 78.
一方、図12の基地局装置14と図11の基地局装置14とが組み合わされた構成であってもよい。図5の取得部74は、蓄電池22の残量に関する情報を取得する。決定部78は、取得部74において取得した残量に関する情報をもとに、ビーコン信号の報知周期を決定する。通信部60は、決定部78において決定した報知周期にて、ビーコン信号を報知する。本変形例によれば、残量とホップ数とを同時に通知できる。
On the other hand, the base station device 14 of FIG. 12 and the base station device 14 of FIG. 11 may be combined. The acquisition unit 74 in FIG. 5 acquires information regarding the remaining amount of the storage battery 22. The determination unit 78 determines the notification period of the beacon signal based on the information regarding the remaining amount acquired by the acquisition unit 74. The communication unit 60 notifies the beacon signal at the notification cycle determined by the determination unit 78. According to this modification, the remaining amount and the number of hops can be notified at the same time.
10 制御装置、 12 端末装置、 14 基地局装置、 16 照明装置、 20 ソーラパネル、 22 蓄電池、 24 照明部、 26 撮像装置、 28 制御部、 30 通信部、 32 管理部、 36 指示部、 38 記憶部、 40 収集部、 42 制御部、 60 通信部、 62 処理部、 66 管理部、 72 制御部、 74 取得部、 76 導出部、 78 決定部、 100 照明システム、 110 設定部、 112 生成部。
10 control device, 12 terminal device, 14 base station device, 16 lighting device, 20 solar panel, 22 storage battery, 24 lighting unit, 26 imaging device, 28 control unit, 30 communication unit, 32 management unit, 36 instruction unit, 38 storage Section, 40 collection section, 42 control section, 60 communication section, 62 processing section, 66 management section, 72 control section, 74 acquisition section, 76 derivation section, 78 determination section, 100 lighting system, 110 setting section, 112 generation section.
Claims (10)
- 蓄電池によって駆動される基地局装置であって、
基地局間通信によって他の基地局装置と通信するとともに、端末装置とも通信可能な通信部と、
蓄電池の残量をもとに、本基地局装置を識別するための第1SSIDとは異なった第2SSIDを設定する設定部と、
前記設定部において設定した第2SSIDと、本基地局装置に付与されたMACアドレスと、端末装置に通知すべき情報とが含まれたビーコン信号を生成し、ビーコン信号を前記通信部に報知させる生成部と、
前記生成部において生成したビーコン信号を受信した端末装置との間で第1SSIDによる接続処理を実行する処理部とを備え、
前記生成部は、ビーコン信号に第1SSIDを含めず、
前記処理部における接続処理の対象となる端末装置では、MACアドレスと第1SSIDとの対応が予め認識されており、ビーコン信号に含まれたMACアドレスから本基地局装置の第1SSIDが特定されていることを特徴とする基地局装置。 A base station device driven by a storage battery,
While communicating with other base station devices by inter-base station communication, a communication unit capable of communicating with terminal devices,
A setting unit for setting a second SSID different from the first SSID for identifying the base station device based on the remaining amount of the storage battery;
Generation of generating a beacon signal including the second SSID set in the setting unit, the MAC address assigned to the base station device, and information to be notified to the terminal device, and informing the communication unit of the beacon signal And
A processing unit that executes a connection process using the first SSID with the terminal device that has received the beacon signal generated in the generation unit;
The generator does not include the first SSID in the beacon signal,
In the terminal device to be connected in the processing unit, the correspondence between the MAC address and the first SSID is recognized in advance, and the first SSID of the base station device is specified from the MAC address included in the beacon signal. A base station apparatus. - 蓄電池によって駆動される基地局装置であって、
基地局間通信によって他の基地局装置と通信するとともに、端末装置とも通信可能な通信部と、
前記通信部での基地局間通信によって形成された経路におけるホップ数をもとに、本基地局装置を識別するための第1SSIDとは異なった第2SSIDを設定する設定部と、
前記設定部において設定した第2SSIDと、本基地局装置に付与されたMACアドレスと、端末装置に通知すべき情報とが含まれたビーコン信号を生成し、ビーコン信号を前記通信部に報知させる生成部と、
前記生成部において生成したビーコン信号を受信した端末装置との間で第1SSIDによる接続処理を実行する処理部とを備え、
前記生成部は、ビーコン信号に第1SSIDを含めず、
前記処理部における接続処理の対象となる端末装置では、MACアドレスと第1SSIDとの対応が予め認識されており、ビーコン信号に含まれたMACアドレスから本基地局装置の第1SSIDが特定されていることを特徴とする基地局装置。 A base station device driven by a storage battery,
While communicating with other base station devices by inter-base station communication, a communication unit capable of communicating with terminal devices,
A setting unit configured to set a second SSID different from the first SSID for identifying the base station device based on the number of hops in the path formed by the communication between the base stations in the communication unit;
Generation of generating a beacon signal including the second SSID set in the setting unit, the MAC address assigned to the base station device, and information to be notified to the terminal device, and informing the communication unit of the beacon signal And
A processing unit that executes a connection process using the first SSID with the terminal device that has received the beacon signal generated in the generation unit;
The generator does not include the first SSID in the beacon signal,
In the terminal device to be connected in the processing unit, the correspondence between the MAC address and the first SSID is recognized in advance, and the first SSID of the base station device is specified from the MAC address included in the beacon signal. A base station apparatus. - 前記通信部での基地局間通信によって形成された経路に含まれた各他の基地局装置を駆動させている蓄電池の残量に関する情報を取得する取得部と、
前記取得部において取得した情報をもとに、経路における残量を導出する導出部と、
前記導出部において導出した残量をもとに、ビーコン信号の報知周期を決定する決定部とをさらに備え、
前記通信部は、前記決定部において決定した報知周期にて、ビーコン信号を報知することを特徴とする請求項2に記載の基地局装置。 An acquisition unit that acquires information on the remaining amount of a storage battery that drives each other base station device included in a path formed by communication between base stations in the communication unit;
Based on the information acquired in the acquisition unit, a derivation unit that derives the remaining amount in the route;
Based on the remaining amount derived in the derivation unit, further comprising a determination unit that determines the notification period of the beacon signal,
The base station apparatus according to claim 2, wherein the communication unit broadcasts a beacon signal at a broadcast cycle determined by the determination unit. - 蓄電池の残量に関する情報を取得する取得部と、
前記取得部において取得した残量に関する情報をもとに、ビーコン信号の報知周期を決定する決定部とをさらに備え、
前記通信部は、前記決定部において決定した報知周期にて、ビーコン信号を報知することを特徴とする請求項2に記載の基地局装置。 An acquisition unit for acquiring information on the remaining amount of the storage battery;
Based on information on the remaining amount acquired in the acquisition unit, further comprising a determination unit that determines a notification period of the beacon signal,
The base station apparatus according to claim 2, wherein the communication unit broadcasts a beacon signal at a broadcast cycle determined by the determination unit. - 前記決定部は、残量がしきい値よりも小さくなると、ビーコン信号の報知停止を決定することを特徴とする請求項3または4に記載の基地局装置。 The base station apparatus according to claim 3 or 4, wherein when the remaining amount becomes smaller than a threshold value, the determination unit determines to stop reporting a beacon signal.
- 蓄電池によって駆動される基地局装置であって、
基地局間通信によって他の基地局装置と通信するとともに、端末装置とも通信可能な通信部と、
前記通信部での基地局間通信によって形成された経路に含まれた各他の基地局装置を駆動させている蓄電池の残量に関する情報を取得する取得部と、
前記取得部において取得した情報をもとに、経路における残量を導出する導出部と、
前記導出部において導出した残量をもとに、ビーコン信号の報知周期を決定する決定部とを備え、
前記通信部は、前記決定部において決定した報知周期にて、端末装置に報知すべき情報が含まれたビーコン信号を報知することを特徴とする基地局装置。 A base station device driven by a storage battery,
While communicating with other base station devices by inter-base station communication, a communication unit capable of communicating with terminal devices,
An acquisition unit that acquires information on the remaining amount of a storage battery that drives each other base station device included in a path formed by communication between base stations in the communication unit;
Based on the information acquired in the acquisition unit, a derivation unit that derives the remaining amount in the route;
Based on the remaining amount derived in the derivation unit, comprising a determination unit that determines the notification period of the beacon signal,
The said communication part alert | reports the beacon signal containing the information which should be alert | reported to a terminal device by the alerting | reporting period determined in the said determination part. - 前記導出部は、経路における残量として、複数の蓄電池の残量に対する統計処理値を導出することを特徴とする請求項6に記載の基地局装置。 The base station apparatus according to claim 6, wherein the deriving unit derives a statistical processing value for the remaining amount of the plurality of storage batteries as the remaining amount in the route.
- 前記導出部は、経路における残量として、複数の蓄電池の残量のうちのひとつを選択することを特徴とする請求項6に記載の基地局装置。 The base station apparatus according to claim 6, wherein the derivation unit selects one of the remaining amounts of the plurality of storage batteries as the remaining amount in the route.
- 蓄電池によって駆動される基地局装置であって、
基地局間通信によって他の基地局装置と通信するとともに、端末装置とも通信可能な通信部と、
蓄電池の残量に関する情報を取得する取得部と、
前記取得部において取得した残量に関する情報をもとに、ビーコン信号の報知周期を決定する決定部とを備え、
前記通信部は、前記決定部において決定した報知周期にて、端末装置に報知すべき情報が含まれたビーコン信号を報知することを特徴とする基地局装置。 A base station device driven by a storage battery,
While communicating with other base station devices by inter-base station communication, a communication unit capable of communicating with terminal devices,
An acquisition unit for acquiring information on the remaining amount of the storage battery;
Based on information on the remaining amount acquired in the acquisition unit, comprising a determination unit that determines a notification period of the beacon signal,
The said communication part alert | reports the beacon signal containing the information which should be alert | reported to a terminal device by the alerting | reporting period determined in the said determination part. - 前記決定部は、残量がしきい値よりも小さくなると、ビーコン信号の報知停止を決定することを特徴とする請求項6から9のいずれかに記載の基地局装置。 The base station apparatus according to any one of claims 6 to 9, wherein the determination unit determines that the beacon signal is stopped when the remaining amount is smaller than a threshold value.
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