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WO2015052819A1 - Information processing system, position identification method, and position identification program - Google Patents

Information processing system, position identification method, and position identification program Download PDF

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Publication number
WO2015052819A1
WO2015052819A1 PCT/JP2013/077675 JP2013077675W WO2015052819A1 WO 2015052819 A1 WO2015052819 A1 WO 2015052819A1 JP 2013077675 W JP2013077675 W JP 2013077675W WO 2015052819 A1 WO2015052819 A1 WO 2015052819A1
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WO
WIPO (PCT)
Prior art keywords
node
information processing
power
signal strength
control unit
Prior art date
Application number
PCT/JP2013/077675
Other languages
French (fr)
Japanese (ja)
Inventor
達彦 根岸
Original Assignee
富士通株式会社
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Publication date
Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to JP2015541388A priority Critical patent/JP5954501B2/en
Priority to PCT/JP2013/077675 priority patent/WO2015052819A1/en
Publication of WO2015052819A1 publication Critical patent/WO2015052819A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/12—Shortest path evaluation
    • H04L45/122—Shortest path evaluation by minimising distances, e.g. by selecting a route with minimum of number of hops
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3209—Monitoring remote activity, e.g. over telephone lines or network connections
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment

Definitions

  • the present invention relates to an information processing system, a position specifying method, and a position specifying program.
  • the node is an information processing apparatus having a CPU, a memory controller and memory, a storage controller and storage, a wireless LAN (Local Area Network) controller, a baseband, an RF (Radio Frequency) unit, and an interconnect.
  • a CPU Central Processing Unit
  • memory controller and memory
  • storage controller and storage
  • wireless LAN Local Area Network
  • baseband a baseband
  • RF Radio Frequency
  • each node performs wireless communication with other nodes using a wireless LAN. For this reason, each node has a routing table in which a destination node of a frame transmitted by wireless communication is associated with a next node that is a next transmission destination node.
  • FIG. 11 is a diagram for explaining the routing of a frame using the routing table.
  • FIG. 11 shows a case where the node A transmits a frame to the node O.
  • each node can perform wireless communication with nodes adjacent to the upper, lower, left, right, upper left, upper right, lower left, and lower right.
  • next node F is stored in the routing table of the node A in association with the destination node O. Therefore, the node A transmits a frame for the destination node O to the node F.
  • next node K is stored in the routing table of the node F in association with the destination node O. Therefore, the node F transmits a frame for the destination node O to the node K.
  • next node O is stored in the routing table of the node K in association with the destination node O. Therefore, the node K transmits a frame to the destination node O.
  • the position of each node is specified using a radio wave arrival time difference method, a radio wave reception intensity method, etc. that each node observes when receiving a long-distance wireless signal.
  • the position of the node can be estimated using a radio wave arrival time difference method, a radio wave reception intensity method, or the like.
  • the present invention aims to accurately specify the position of each node in a housing.
  • the information processing system disclosed in the present application includes a plurality of information processing devices mounted on a casing. Then, the information processing system wirelessly supplies power to a predetermined number of information processing devices, and receives the identifier for identifying each information processing device and the wireless signal strength from each information processing device that has supplied the power. It has a supply part.
  • the information processing system includes a specifying unit that specifies the position of each information processing device in the housing based on the identifier and the signal strength.
  • the position of each node in the housing can be accurately specified.
  • FIG. 1 is a front view illustrating the information processing system according to the embodiment.
  • FIG. 2 is a side view illustrating the information processing system according to the embodiment.
  • FIG. 3 is a diagram illustrating the configuration of the node.
  • FIG. 4 is a diagram illustrating a configuration of a power transmitter that performs wireless power feeding and a power receiver that receives wireless power feeding.
  • FIG. 5 is a diagram illustrating an example of a packet transmitted from the communication control unit to the power transmitter.
  • FIG. 6 is a diagram illustrating a functional configuration of the overall control unit.
  • FIG. 7 is a diagram for explaining an example of creating routing table information.
  • FIG. 8 is a diagram for explaining another example of creation of routing table information.
  • FIG. 9 is a flowchart illustrating a flow of a routing table creation process.
  • FIG. 10 is a diagram illustrating a hardware configuration of the overall control unit.
  • FIG. 11 is a diagram for explaining frame routing using a routing table.
  • FIG. 1 is a front view illustrating the information processing system according to the embodiment
  • FIG. 2 is a side view illustrating the information processing system according to the embodiment.
  • the information processing system 10 includes a network switch 11 and 32 nodes 20.
  • 32 nodes 20 are shown here, but the information processing system 10 can have an arbitrary number of nodes 20.
  • the network switch 11 and the node 20 are accommodated in the slot of the housing 1, and the node 20 can be removed from the slot of the housing 1.
  • the network switch 11 is used for the node 20 to communicate with an external network.
  • the network switch 11 communicates with the node 20 wirelessly, and includes a normal wireless antenna 11a and a management wireless antenna 11b.
  • the normal radio antenna 11 a is a radio (hereinafter referred to as “normal radio”) antenna used by the OS and application operating on the node 20 for communication with other nodes 20 and the network switch 11.
  • the management radio radio antenna 11 b is a radio (hereinafter referred to as “management radio”) antenna used for management of the node 20 or the like.
  • the management radio is slower than the normal radio, but can communicate over a long distance, and can communicate between the farthest nodes or between the network switch 11 and the nodes.
  • the network switch 11 includes an overall control unit 40 that controls the node 20 and the network switch 11.
  • the overall control unit 40 assigns a node ID, which is an identifier for uniquely identifying each node 20, to each node 20.
  • the node ID is generated by the overall control unit 40 from the MAC (Media Access Control) address of the node 20.
  • the overall control unit 40 has an MPU and is realized by executing firmware in the MPU.
  • the node 20 includes a normal radio antenna 20a, a management radio antenna 20b, and a radio power feeding antenna 20c.
  • the normal radio antenna 20a is an antenna used for normal radio.
  • the management radio radio antenna 20b is an antenna used for management radio.
  • the wireless power feeding antenna 20 c is an antenna for the node 20 to receive wireless power feeding from the housing 1. That is, there are no wired connectors or wired communication lines that connect the nodes or between the node 20 and the housing 1, and power feeding and communication are performed wirelessly.
  • FIG. 3 is a diagram illustrating the configuration of the node 20.
  • the node 20 includes a CPU 21, a memory controller 22, a memory 23, a storage controller 24, a storage 25, a wireless LAN controller 26, a baseband and RF unit 27, and an interconnect 28.
  • the node 20 includes a control unit 29 and a power receiver 30.
  • the CPU 21 is a central processing unit that reads and executes a program stored in the memory 23.
  • the memory controller 22 is a control device that controls writing of data into the memory 23, reading of programs and data from the memory 23.
  • the memory 23 is a RAM (Random Access Memory) that stores programs and data.
  • the storage controller 24 is a control device that controls the writing of data to the storage 25 and the reading of programs and data from the storage 25.
  • the storage 25 is a magnetic disk device that stores programs and data.
  • the wireless LAN controller 26 is a control device that controls communication using a wireless LAN that is normally used for radio and management radio.
  • the baseband and RF unit 27 performs wireless communication under the control of the wireless LAN controller 26.
  • the interconnect 28 is a device that interconnects the CPU 21, the memory controller 22, the storage controller 24, the wireless LAN controller 26, and the control unit 29.
  • the control unit 29 controls the node 20 using management radio.
  • the control unit 29 has an MPU (Micro Processing Unit), and is realized by executing firmware in the MPU. Further, the control unit 29 has a routing table that associates the MAC address of the destination node with the MAC address of the next node, and routes a frame transmitted from the node 20 to another node 20.
  • the power receiver 30 receives wireless power feeding from the housing 1 and supplies power in the node.
  • FIG. 4 is a diagram showing a configuration of a power transmitter 50 that performs wireless power feeding and a power receiver 30 that receives wireless power feeding.
  • the power transmitter 50 is disposed in the housing 1 and includes an inverter 51, a primary coil 52, a current sense 53, and a communication control unit 54.
  • the inverter 51 converts the DC input into AC and drives the primary coil 52.
  • the primary coil 52 forms a resonance circuit together with the capacitor.
  • the current sense 53 receives the packet transmitted from the power receiver 30 by measuring the current of the primary coil 52 and notifies the communication control unit 54 of the received packet.
  • the communication control unit 54 receives and decodes the message from the power receiver 30, and executes power control based on the decoded message and the current of the primary coil 52.
  • the communication control unit 54 controls power feeding by operating the AC frequency output from the inverter 51.
  • the communication control unit 54 performs power supply control based on an instruction from the overall control unit 40 included in the network switch 11 and notifies the overall control unit 40 of the control state.
  • the communication control unit 54 communicates with the communication control unit 35 of the power receiver 30.
  • One power transmitter 50 supplies power to n nodes 20.
  • one power transmitter 50 supplies power to eight nodes 20. Therefore, in the information processing system 10 according to the embodiment, the four power transmitters 50 are arranged in the housing 1. Since the nodes 20 are arranged in four stages in the housing, the power transmitter 50 is arranged at the left end of each stage and supplies power to the eight nodes 20 in each stage.
  • one power transmitter 50 supplies power to eight nodes 20 here, one power transmitter 50 can supply power to an arbitrary number of nodes 20 within a range where wireless power supply is possible.
  • the power transmitter 50 is arranged at the left end of each stage, but the power transmitter 50 can be arranged at other places such as the right end of each stage.
  • the power receiver 30 includes a secondary coil 31, an adjustment circuit 32, an output circuit breaker 33, a communication modulator 34, and a communication control unit 35.
  • the secondary coil 31 constitutes a resonance circuit together with the capacitor, and receives power from the power transmitter 50.
  • the adjustment circuit 32 adjusts the AC waveform of the power received from the secondary coil 31.
  • the adjustment circuit 32 can also smooth the output.
  • the adjustment circuit 32 supplies power to the output circuit breaker 33, the communication modulator 34, and the communication control unit 35.
  • the output circuit breaker 33 interrupts the output current when the power receiver 30 does not supply power.
  • the output circuit breaker 33 prevents the current from flowing backward when the power receiver 30 does not supply power.
  • the communication modulator 34 transmits a communication signal to the power transmitter 50 based on an instruction from the communication control unit 35.
  • the communication control unit 35 operates the communication modulator 34 and transmits a packet to the communication control unit 54 of the power transmitter 50.
  • FIG. 5 is a diagram illustrating an example of a packet that the communication control unit 35 transmits to the power transmitter 50.
  • FIG. 5 is a signal strength packet indicating the degree of coupling between the primary coil 52 and the secondary coil 31 as a signal strength value.
  • the signal strength packet transmits the signal strength from the power receiver 30 to the power transmitter 50 for the purpose of setting the primary coil 52 that provides optimal power transmission to the power transmitter 50 using free positioning.
  • the communication control unit 35 transmits the signal strength value to the power transmitter 50 using 8-bit data.
  • the power receiver 30 determines the signal strength value from the rectified voltage, the open circuit voltage, the received power, and the like.
  • the communication control unit 35 controls the output circuit breaker 33 and monitors and controls the power receiver 30 and the load 60.
  • the communication control unit 35 performs power reception control based on an instruction from the control unit 29 and notifies the control unit 29 of the control state.
  • FIG. 6 is a diagram illustrating a functional configuration of the overall control unit 40.
  • the overall control unit 40 includes a power supply instruction unit 41, a signal strength acquisition unit 42, a position specifying unit 43, a mapping information creation unit 44, and a routing table creation unit 45.
  • the power supply instruction unit 41 instructs the power transmitter 50 to supply power, and instructs execution of ping as part of the power supply instruction.
  • ping is a power signal transmitted to select the power receiver 30 to which the power transmitter 50 supplies power.
  • the power receiver 30 that has received the ping transmits a node ID for identifying the node and a signal strength value of the received power signal to the power transmitter 50.
  • the signal strength acquisition unit 42 acquires the node ID and the signal strength value transmitted from the power receiver 30 from the power transmitter 50. Since the signal strength acquisition unit 42 receives the eight node IDs and signal strength values received by each power transmitter 50 from the four power transmitters 50, the signal strength acquisition unit 42 acquires a total of 32 node IDs and signal strength values.
  • the position specifying unit 43 specifies the position of each node 20 in the housing based on the arrangement position of the power transmitter 50 and the 32 node IDs and signal intensity values acquired by the signal intensity acquisition unit 42. Specifically, the position specifying unit 43 associates the eight node IDs received by each power transmitter 50 with each stage of the housing 1. Then, the position specifying unit 43 associates node IDs from the left slot of the housing 1 in descending order of the signal strength value.
  • the position specifying unit 43 notifies each node 20 of the specified position by management radio.
  • the position specifying unit 43 can notify each node 20 of the specified position via the power transmitter 50 and the power receiver 30.
  • the mapping information creating unit 44 creates mapping information for associating the slot position with the node ID based on the position specified by the position specifying unit 43 for the node 20 in the housing.
  • the routing table creation unit 45 creates routing table information of each node 20 based on the mapping information created by the mapping information creation unit 44, and sends the routing table information to the control unit 29 of each node 20 by managed radio. Send.
  • the control unit 29 that has received the routing table information writes the information in its own routing table.
  • FIG. 7 is a diagram for explaining an example of creating routing table information.
  • each node 20 transmits a frame only to nodes 20 adjacent in the vertical and horizontal directions using short-range radio.
  • short-range radio is one of normal radio.
  • the routing table creation unit 45 creates routing information so as to transfer a frame to the node 20 adjacent in the horizontal direction first, and then transfer the frame to the node 20 adjacent in the vertical direction.
  • the routing table creation unit 45 when a frame is transmitted from the transmission source node A to the destination node O, the routing table creation unit 45 performs routing of the node A so as to transfer a frame whose destination is the node O to the node B. Create information. Further, the routing table creation unit 45 creates the routing information of the node B so as to transfer the frame whose destination is the node O to the node C.
  • the routing table creation unit 45 creates the routing information of the node C so as to transfer the frame whose destination is the node O to the node G. Further, the routing table creation unit 45 creates the routing information of the node G so as to transfer the frame whose destination is the node O to the node K. Further, the routing table creation unit 45 creates the routing information of the node K so as to transfer the frame whose destination is the node O to the node O.
  • the routing table creation unit 45 can create the routing table information by specifying the frame transfer destination for each node 20 for each destination node.
  • FIG. 8 is a diagram for explaining another example of creating routing table information.
  • node A, node D, node M, and node P can communicate with both short-range radio and long-range radio.
  • other nodes can communicate only by short-range radio.
  • the long-range radio is one of the normal radios.
  • Node A, Node D, Node M, and Node P transmit frames to the destination node by long-distance radio when the destination node has a long-distance radio function. Further, the node A, the node D, the node M, and the node P transfer a frame based on the number of hops to the destination node when the destination node does not have a long-distance wireless function. That is, the node A, the node D, the node M, and the node P transfer the frame using the short-range radio when the hop number is within the predetermined threshold, and when the hop number is not within the predetermined threshold, The frame is transmitted to the node closest to the destination node and having the long-distance communication function.
  • other nodes having only short-range wireless functions transfer frames based on the number of hops to the destination node. That is, the other nodes transfer frames using short-range radio when the number of hops is within a predetermined threshold, and when the number of hops is not within the predetermined threshold, the other nodes are closest and have a long-range communication function. The frame is transferred to the node having it.
  • the routing table creation unit 45 transfers the frame whose destination is the node O to the node P by long-distance radio. Create routing information for node A.
  • the routing table creation unit 45 creates the routing information of the node P so that the frame whose destination is the node O is transferred to the node O by short-range radio.
  • FIG. 9 is a flowchart illustrating a flow of a routing table creation process. As shown in FIG. 9, based on an instruction from the overall control unit 40, the power transmitter 50 arranged in the housing 1 executes ping (step S1).
  • the power transmitter 50 waits for a response from the power receiver 30 of the node 20 (step S2), and determines whether a response from the power receiver 30 has been detected (step S3). As a result, when a response from the power receiver 30 is not detected, the power transmitter 50 returns to step S2 and waits for a response from the power receiver 30.
  • the power transmitter 50 receives the node ID and the signal strength value transmitted by the power receiver 30 (step S4). Then, the power transmitter 50 determines whether or not the node ID and the signal strength value have been received from the power receivers 30 of all the nodes 20 assigned to itself (step S5), and has received the node ID and the signal strength value. If there is no power receiver 30, the process returns to step S ⁇ b> 2 and waits for a response from the power receiver 30.
  • step S1 to step S5 is performed by each power transmitter 50.
  • the overall control unit 40 identifies the position of each node 20 based on the node IDs and signal strength values (step S6).
  • the overall control unit 40 notifies each node 20 of the specified position by management radio (step S7), and creates mapping information (step S8). Then, the overall control unit 40 creates routing table information based on the mapping information and transmits it to each node 20 (step S9).
  • each node 20 can automatically set the routing table.
  • FIG. 10 is a diagram illustrating a hardware configuration of the overall control unit 40. As shown in FIG. 10, the overall control unit 40 includes an MPU 46, a flash memory 47, and a RAM 48.
  • the MPU 46 is an arithmetic processing unit that reads a program from the flash memory 47 and executes it.
  • the flash memory 47 is a nonvolatile memory that stores a program.
  • the RAM 48 is a memory that stores intermediate results of the program.
  • the power transmitter 50 arranged in the housing 1 executes ping and receives the node ID and the signal strength value from the power receiver 30 of each node 20. Then, the overall control unit 40 acquires the node ID and the signal strength value from the power transmitter 50, and specifies the position of each node 20 based on the acquired node ID and the signal strength value. Therefore, the information processing system 10 can automatically grasp the node arrangement in the housing.
  • the overall control unit 40 creates routing table information based on the identified node arrangement and transmits it to each node 20. Therefore, the information processing system 10 can automatically set the routing table of each node 20.
  • each power transmitter 50 supplies power to eight nodes 20.
  • the present invention is not limited to this, and each power transmitter 50 supplies power to one node 20.
  • the overall control unit can specify the position of each node in the housing from the node ID received by each power transmitter and the position of each transmitter. Therefore, the information processing system 10 can automatically grasp the node arrangement in the housing without using the signal intensity value.
  • the present invention is not limited to this, and only one transmitter 50 can be used.
  • the overall control unit can specify the position of each node in the housing from the signal intensity value. Therefore, the information processing system 10 can automatically grasp the node arrangement in the housing without using the position of the transmitter.
  • each power transmitter 50 receives the node ID and the signal strength value.
  • the present invention is not limited to this, and can be similarly applied to the case where the node ID and the signal strength value are received using other communication means such as a management radio.
  • the present invention is not limited to this, and the same applies to the case where the nodes 20 are arranged three-dimensionally. it can.
  • the network switch 11 includes the overall control unit 40
  • the present invention is not limited to this, and for example, the overall control unit is disposed in the housing 1. The same can be applied to the case where the overall control unit is arranged at another location.
  • the present invention is not limited to this, and the same applies to the case where the node ID is generated from other information. can do.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A power transmitter (50) inside a housing (1) sends out a ping and receives a node ID and a signal strength from a power receiver (30) in each of a number of nodes (20). An overall control unit (40) obtains said node IDs and signal strengths from the power transmitter (50) and identifies the position of each node (20) on the basis of the obtained node IDs and signal strengths. On the basis of the identified node layout, the overall control unit (40) creates routing-table information and transmits same to each node (20).

Description

情報処理システム、位置特定方法及び位置特定プログラムInformation processing system, position specifying method, and position specifying program
　本発明は、情報処理システム、位置特定方法及び位置特定プログラムに関する。 The present invention relates to an information processing system, a position specifying method, and a position specifying program.
　１個の筐体内に、多数のノードと、外部ネットワークと通信するためのネットワークスイッチとを収容する情報処理システムがある。ここで、ノードとは、ＣＰＵ、メモリーコントローラとメモリー、ストレージコントローラとストレージ、無線ＬＡＮ（Local　Area　Network）コントローラ、ベースバンドとＲＦ（Radio　Frequency）部及びインターコネクトを有する情報処理装置である。 There is an information processing system that accommodates a large number of nodes and a network switch for communicating with an external network in one casing. Here, the node is an information processing apparatus having a CPU, a memory controller and memory, a storage controller and storage, a wireless LAN (Local Area Network) controller, a baseband, an RF (Radio Frequency) unit, and an interconnect.
　各ノードは、他のノードと無線ＬＡＮを用いて無線通信を行う。このため、各ノードは、無線通信で送信されるフレームの宛先ノードと次の送信先ノードであるネクストノードを対応付けたルーティングテーブルを有する。 Each node performs wireless communication with other nodes using a wireless LAN. For this reason, each node has a routing table in which a destination node of a frame transmitted by wireless communication is associated with a next node that is a next transmission destination node.
　図１１は、ルーティングテーブルを用いたフレームのルーティングを説明するための図である。図１１は、ノードＡがノードＯへフレームを送信する場合を示している。また、各ノードは上、下、左、右、左上、右上、左下及び右下に隣接するノードと無線通信が行える。 FIG. 11 is a diagram for explaining the routing of a frame using the routing table. FIG. 11 shows a case where the node A transmits a frame to the node O. Further, each node can perform wireless communication with nodes adjacent to the upper, lower, left, right, upper left, upper right, lower left, and lower right.
　図１１に示すように、ノードＡのルーティングテーブルには、宛先ノードＯに対応付けてネクストノードＦが記憶されている。したがって、ノードＡは、宛先ノードＯへのフレームをノードＦに送信する。また、ノードＦのルーティングテーブルには、宛先ノードＯに対応付けてネクストノードＫが記憶されている。したがって、ノードＦは、宛先ノードＯへのフレームをノードＫに送信する。また、ノードＫのルーティングテーブルには、宛先ノードＯに対応付けてネクストノードＯが記憶されている。したがって、ノードＫは、宛先ノードＯへフレームを送信する。 As shown in FIG. 11, the next node F is stored in the routing table of the node A in association with the destination node O. Therefore, the node A transmits a frame for the destination node O to the node F. Further, the next node K is stored in the routing table of the node F in association with the destination node O. Therefore, the node F transmits a frame for the destination node O to the node K. Further, the next node O is stored in the routing table of the node K in association with the destination node O. Therefore, the node K transmits a frame to the destination node O.
　ルーティングテーブルを作成するためには、筐体内の各ノードの位置を特定することが必要になる。筐体内の各ノードの位置が正しく特定されず、ルーティングテーブルに誤ったルーティング先が登録されると、ノード間で通信が行えない。 In order to create a routing table, it is necessary to specify the position of each node in the chassis. If the position of each node in the case is not correctly specified and an incorrect routing destination is registered in the routing table, communication between nodes cannot be performed.
　なお、サーバモジュール、スイッチモジュール、マネージメントモジュール等を一つの筐体内に収容するブレードサーバにおいて、バックプレーンボードを用いることなく、筐体内の通信を無線を用いて行う従来技術がある（例えば、特許文献１参照）。また、筐体内のノードの位置の特定に関連する従来技術として、モバイル・ノードが、複数の静的ノードから受信された受信信号強度を比較し、どの静的ノードが最も近くにあるかを推定して自己の位置を推定する技術がある（例えば、特許文献２参照）。また、無線給電の方式に関する規格としてＱｉシステムがある（例えば、非特許文献１参照）。 In a blade server that accommodates a server module, a switch module, a management module, and the like in a single casing, there is a conventional technique that performs wireless communication within the casing without using a backplane board (for example, Patent Documents). 1). Also, as a conventional technology related to the location of the node in the enclosure, the mobile node compares the received signal strength received from multiple static nodes and estimates which static node is closest Thus, there is a technique for estimating its own position (see, for example, Patent Document 2). Further, there is a Qi system as a standard regarding a wireless power feeding method (for example, see Non-Patent Document 1).
特開２００５－１８４６５９号公報JP 2005-184659 A 特表２０１２－５０７７３６号公報Special table 2012-507736 gazette
　各ノードが長距離無線信号受信時に観測する電波到達時間差方式、電波受信強度方式などを用いて各ノードの位置を特定することが考えられる。ノードの位置が数百ｍ～数Ｋｍのように離れている場合には、電波到達時間差方式、電波受信強度方式などを用いてノードの位置を推定することが可能である。 It is conceivable that the position of each node is specified using a radio wave arrival time difference method, a radio wave reception intensity method, etc. that each node observes when receiving a long-distance wireless signal. When the position of the node is a few hundred meters to several kilometers away, the position of the node can be estimated using a radio wave arrival time difference method, a radio wave reception intensity method, or the like.
　しかしながら、例えば、高さ２ｍ以内、幅１ｍ以内の筐体内に数百個のノードを配置している場合には、各ノード間の距離が短すぎて、電波到達時間差方式、電波受信強度方式では、各ノードの位置を推定することはできないという問題がある。 However, for example, when hundreds of nodes are arranged in a case with a height of 2 m or less and a width of 1 m or less, the distance between the nodes is too short. There is a problem that the position of each node cannot be estimated.
　本発明は、１つの側面では、筐体内の各ノードの位置を正確に特定することを目的とする。 In one aspect, the present invention aims to accurately specify the position of each node in a housing.
　本願の開示する情報処理システムは、１つの態様において、複数の情報処理装置を筐体に搭載する。そして、情報処理システムは、無線で所定の数の情報処理装置に電力を供給し、該電力を供給した各情報処理装置から各情報処理装置を識別する識別子及び前記無線の信号強度を受信する電力供給部を有する。また、情報処理システムは、前記識別子及び前記信号強度に基づいて筐体内の各情報処理装置の位置を特定する特定部を有する。 In one aspect, the information processing system disclosed in the present application includes a plurality of information processing devices mounted on a casing. Then, the information processing system wirelessly supplies power to a predetermined number of information processing devices, and receives the identifier for identifying each information processing device and the wireless signal strength from each information processing device that has supplied the power. It has a supply part. In addition, the information processing system includes a specifying unit that specifies the position of each information processing device in the housing based on the identifier and the signal strength.
　１実施態様によれば、筐体内の各ノードの位置を正確に特定することができる。 According to one embodiment, the position of each node in the housing can be accurately specified.
図１は、実施例に係る情報処理システムを示す正面図である。FIG. 1 is a front view illustrating the information processing system according to the embodiment. 図２は、実施例に係る情報処理システムを示す側面図である。FIG. 2 is a side view illustrating the information processing system according to the embodiment. 図３は、ノードの構成を示す図である。FIG. 3 is a diagram illustrating the configuration of the node. 図４は、無線給電を行うパワートランスミッタと無線給電を受けるパワーレシーバの構成を示す図である。FIG. 4 is a diagram illustrating a configuration of a power transmitter that performs wireless power feeding and a power receiver that receives wireless power feeding. 図５は、通信制御部がパワートランスミッタに送信するパケットの一例を示す図である。FIG. 5 is a diagram illustrating an example of a packet transmitted from the communication control unit to the power transmitter. 図６は、全体制御部の機能構成を示す図である。FIG. 6 is a diagram illustrating a functional configuration of the overall control unit. 図７は、ルーティングテーブルの情報の作成例を説明するための図である。FIG. 7 is a diagram for explaining an example of creating routing table information. 図８は、ルーティングテーブルの情報の他の作成例を説明するための図である。FIG. 8 is a diagram for explaining another example of creation of routing table information. 図９は、ルーティングテーブルの作成処理のフローを示すフローチャートである。FIG. 9 is a flowchart illustrating a flow of a routing table creation process. 図１０は、全体制御部のハードウェア構成を示す図である。FIG. 10 is a diagram illustrating a hardware configuration of the overall control unit. 図１１は、ルーティングテーブルを用いたフレームのルーティングを説明するための図である。FIG. 11 is a diagram for explaining frame routing using a routing table.
　以下に、本願の開示する情報処理システム、位置特定方法及び位置特定プログラムの実施例を図面に基づいて詳細に説明する。なお、この実施例は開示の技術を限定するものではない。 Hereinafter, embodiments of an information processing system, a position specifying method, and a position specifying program disclosed in the present application will be described in detail with reference to the drawings. Note that this embodiment does not limit the disclosed technology.
　まず、実施例に係る情報処理システムを図１及び図２を用いて説明する。図１は、実施例に係る情報処理システムを示す正面図であり、図２は、実施例に係る情報処理システムを示す側面図である。 First, an information processing system according to an embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a front view illustrating the information processing system according to the embodiment, and FIG. 2 is a side view illustrating the information processing system according to the embodiment.
　図１に示すように、情報処理システム１０は、ネットワークスイッチ１１と、３２個のノード２０とを有する。なお、ここでは説明の便宜上、３２個のノード２０を示したが、情報処理システム１０は、任意の数のノード２０を有することができる。また、図２に示すように、ネットワークスイッチ１１及びノード２０は筐体１のスロットに収容され、ノード２０は筐体１のスロットから取り外すことが可能である。 As shown in FIG. 1, the information processing system 10 includes a network switch 11 and 32 nodes 20. For convenience of explanation, 32 nodes 20 are shown here, but the information processing system 10 can have an arbitrary number of nodes 20. As shown in FIG. 2, the network switch 11 and the node 20 are accommodated in the slot of the housing 1, and the node 20 can be removed from the slot of the housing 1.
　ネットワークスイッチ１１は、ノード２０が外部ネットワークと通信するために用いられる。ネットワークスイッチ１１は、ノード２０と無線で通信を行い、通常無線用無線アンテナ１１ａと、管理無線用無線アンテナ１１ｂとを有する。 The network switch 11 is used for the node 20 to communicate with an external network. The network switch 11 communicates with the node 20 wirelessly, and includes a normal wireless antenna 11a and a management wireless antenna 11b.
　通常無線用無線アンテナ１１ａは、ノード２０で動作するＯＳやアプリケーションが他のノード２０やネットワークスイッチ１１との通信に使用する無線（以下、「通常無線」と呼ぶ）のアンテナである。 The normal radio antenna 11 a is a radio (hereinafter referred to as “normal radio”) antenna used by the OS and application operating on the node 20 for communication with other nodes 20 and the network switch 11.
　管理無線用無線アンテナ１１ｂは、ノード２０の管理などで用いられる無線（以下、「管理無線」と呼ぶ）のアンテナである。管理無線は、通常無線と比較して、低速であるが、遠距離の通信が可能であり、最も遠いノード同士やネットワークスイッチ１１とノード間でも通信が可能である。 The management radio radio antenna 11 b is a radio (hereinafter referred to as “management radio”) antenna used for management of the node 20 or the like. The management radio is slower than the normal radio, but can communicate over a long distance, and can communicate between the farthest nodes or between the network switch 11 and the nodes.
　また、ネットワークスイッチ１１は、ノード２０及びネットワークスイッチ１１を制御する全体制御部４０を有する。全体制御部４０は、各ノード２０を一意に識別する識別子であるノードＩＤを各ノード２０に割り当てる。ノードＩＤは、ノード２０が有するＭＡＣ（Media　Access　Control）アドレスから全体制御部４０により生成される。全体制御部４０は、ＭＰＵを有し、ＭＰＵでファームウェアを実行することにより実現される。 In addition, the network switch 11 includes an overall control unit 40 that controls the node 20 and the network switch 11. The overall control unit 40 assigns a node ID, which is an identifier for uniquely identifying each node 20, to each node 20. The node ID is generated by the overall control unit 40 from the MAC (Media Access Control) address of the node 20. The overall control unit 40 has an MPU and is realized by executing firmware in the MPU.
　ノード２０は、通常無線用無線アンテナ２０ａと、管理無線用無線アンテナ２０ｂと、無線給電用アンテナ２０ｃとを有する。通常無線用無線アンテナ２０ａは、通常無線で用いられるアンテナである。管理無線用無線アンテナ２０ｂは、管理無線で用いられるアンテナである。 The node 20 includes a normal radio antenna 20a, a management radio antenna 20b, and a radio power feeding antenna 20c. The normal radio antenna 20a is an antenna used for normal radio. The management radio radio antenna 20b is an antenna used for management radio.
　無線給電用アンテナ２０ｃは、ノード２０が筐体１から無線給電を受けるためのアンテナである。すなわち、ノード間やノード２０と筐体１との間を接続する有線のコネクタ及び有線の通信線はなく、給電及び通信は無線により行われる。 The wireless power feeding antenna 20 c is an antenna for the node 20 to receive wireless power feeding from the housing 1. That is, there are no wired connectors or wired communication lines that connect the nodes or between the node 20 and the housing 1, and power feeding and communication are performed wirelessly.
　次に、ノード２０の構成について説明する。図３は、ノード２０の構成を示す図である。図３に示すように、ノード２０は、ＣＰＵ２１と、メモリーコントローラ２２と、メモリー２３と、ストレージコントローラ２４と、ストレージ２５と、無線ＬＡＮコントローラ２６と、ベースバンド及びＲＦ部２７と、インターコネクト２８とを有する。また、ノード２０は、制御部２９と、パワーレシーバ３０とを有する。 Next, the configuration of the node 20 will be described. FIG. 3 is a diagram illustrating the configuration of the node 20. As shown in FIG. 3, the node 20 includes a CPU 21, a memory controller 22, a memory 23, a storage controller 24, a storage 25, a wireless LAN controller 26, a baseband and RF unit 27, and an interconnect 28. Have. The node 20 includes a control unit 29 and a power receiver 30.
　ＣＰＵ２１は、メモリー２３に記憶されたプログラムを読み出して実行する中央処理装置である。メモリーコントローラ２２は、メモリー２３へのデータの書き込み、メモリー２３からのプログラム及びデータの読み出しを制御する制御装置である。メモリー２３は、プログラムやデータを記憶するＲＡＭ（Random　Access　Memory）である。 The CPU 21 is a central processing unit that reads and executes a program stored in the memory 23. The memory controller 22 is a control device that controls writing of data into the memory 23, reading of programs and data from the memory 23. The memory 23 is a RAM (Random Access Memory) that stores programs and data.
　ストレージコントローラ２４は、ストレージ２５へのデータの書き込み、ストレージ２５からのプログラム及びデータの読み出しを制御する制御装置である。ストレージ２５は、プログラムやデータを記憶する磁気ディスク装置である。 The storage controller 24 is a control device that controls the writing of data to the storage 25 and the reading of programs and data from the storage 25. The storage 25 is a magnetic disk device that stores programs and data.
　無線ＬＡＮコントローラ２６は、通常無線及び管理無線で用いられる無線ＬＡＮによる通信を制御する制御装置である。ベースバンド及びＲＦ部２７は、無線ＬＡＮコントローラ２６の制御のもとで無線通信を行う。 The wireless LAN controller 26 is a control device that controls communication using a wireless LAN that is normally used for radio and management radio. The baseband and RF unit 27 performs wireless communication under the control of the wireless LAN controller 26.
　インターコネクト２８は、ＣＰＵ２１、メモリーコントローラ２２、ストレージコントローラ２４、無線ＬＡＮコントローラ２６及び制御部２９を相互に接続する装置である。 The interconnect 28 is a device that interconnects the CPU 21, the memory controller 22, the storage controller 24, the wireless LAN controller 26, and the control unit 29.
　制御部２９は、管理無線を用いてノード２０を制御する。制御部２９は、ＭＰＵ（Micro　Processing　Unit）を有し、ＭＰＵでファームウェアを実行することにより実現される。また、制御部２９は、宛先ノードのＭＡＣアドレスとネクストノードのＭＡＣアドレスを対応付けるルーティングテーブルを有し、ノード２０が他のノード２０に送信するフレームをルーティングする。パワーレシーバ３０は、筐体１から無線給電を受信し、ノード内に電力を供給する。 The control unit 29 controls the node 20 using management radio. The control unit 29 has an MPU (Micro Processing Unit), and is realized by executing firmware in the MPU. Further, the control unit 29 has a routing table that associates the MAC address of the destination node with the MAC address of the next node, and routes a frame transmitted from the node 20 to another node 20. The power receiver 30 receives wireless power feeding from the housing 1 and supplies power in the node.
　次に、無線給電について説明する。図４は、無線給電を行うパワートランスミッタ５０と無線給電を受けるパワーレシーバ３０の構成を示す図である。図４に示すように、パワートランスミッタ５０は、筐体１に配置され、インバータ５１と、プライマリーコイル５２と、カレントセンス５３と、通信制御部５４とを有する。 Next, wireless power feeding will be described. FIG. 4 is a diagram showing a configuration of a power transmitter 50 that performs wireless power feeding and a power receiver 30 that receives wireless power feeding. As shown in FIG. 4, the power transmitter 50 is disposed in the housing 1 and includes an inverter 51, a primary coil 52, a current sense 53, and a communication control unit 54.
　インバータ５１は、直流入力を交流に変換し、プライマリーコイル５２を駆動する。プライマリーコイル５２は、キャパシタとともに共振回路を構成する。カレントセンス５３は、プライマリーコイル５２の電流を測定することによりパワーレシーバ３０から送信されるパケットを受信し、受信したパケットを通信制御部５４に通知する。 The inverter 51 converts the DC input into AC and drives the primary coil 52. The primary coil 52 forms a resonance circuit together with the capacitor. The current sense 53 receives the packet transmitted from the power receiver 30 by measuring the current of the primary coil 52 and notifies the communication control unit 54 of the received packet.
　通信制御部５４は、パワーレシーバ３０からメッセージを受け取って解読し、解読したメッセージ及びプライマリーコイル５２の電流に基づいて電力制御を実行する。通信制御部５４は、インバータ５１が出力する交流の周波数を操作することにより給電の制御を行う。 The communication control unit 54 receives and decodes the message from the power receiver 30, and executes power control based on the decoded message and the current of the primary coil 52. The communication control unit 54 controls power feeding by operating the AC frequency output from the inverter 51.
　また、通信制御部５４は、ネットワークスイッチ１１に含まれる全体制御部４０からの指示に基づいて給電制御を行い、制御状態について全体制御部４０に通知する。また、通信制御部５４は、パワーレシーバ３０の通信制御部３５と通信を行う。 Further, the communication control unit 54 performs power supply control based on an instruction from the overall control unit 40 included in the network switch 11 and notifies the overall control unit 40 of the control state. The communication control unit 54 communicates with the communication control unit 35 of the power receiver 30.
　１つのパワートランスミッタ５０は、ｎ個のノード２０に給電する。例えば、実施例に係る情報処理システム１０では、１つのパワートランスミッタ５０が８個のノード２０に給電する。したがって、実施例に係る情報処理システム１０では、４個のパワートランスミッタ５０が筐体１に配置される。筐体内には４段でノード２０が配置されるため、パワートランスミッタ５０は各段の左端に配置され、それぞれ各段の８個のノード２０に給電する。 One power transmitter 50 supplies power to n nodes 20. For example, in the information processing system 10 according to the embodiment, one power transmitter 50 supplies power to eight nodes 20. Therefore, in the information processing system 10 according to the embodiment, the four power transmitters 50 are arranged in the housing 1. Since the nodes 20 are arranged in four stages in the housing, the power transmitter 50 is arranged at the left end of each stage and supplies power to the eight nodes 20 in each stage.
　なお、ここでは、１つのパワートランスミッタ５０が８個のノード２０に給電することとしたが、１つのパワートランスミッタ５０は、無線給電が可能な範囲で任意の個数のノード２０に給電することができる。また、ここでは、パワートランスミッタ５０を各段の左端に配置することとしたが、パワートランスミッタ５０は各段の右端など他の場所に配置することもできる。 Although one power transmitter 50 supplies power to eight nodes 20 here, one power transmitter 50 can supply power to an arbitrary number of nodes 20 within a range where wireless power supply is possible. . Here, the power transmitter 50 is arranged at the left end of each stage, but the power transmitter 50 can be arranged at other places such as the right end of each stage.
　パワーレシーバ３０は、セカンダリーコイル３１と、調整回路３２と、出力遮断器３３と、通信変調器３４と、通信制御部３５とを有する。セカンダリーコイル３１は、キャパシタとともに共振回路を構成し、パワートランスミッタ５０からの給電を受ける。 The power receiver 30 includes a secondary coil 31, an adjustment circuit 32, an output circuit breaker 33, a communication modulator 34, and a communication control unit 35. The secondary coil 31 constitutes a resonance circuit together with the capacitor, and receives power from the power transmitter 50.
　調整回路３２は、セカンダリーコイル３１から受け取った電力の交流波形を調整する。また、調整回路３２は、出力の平滑化を行うこともできる。調整回路３２は、出力遮断器３３、通信変調器３４及び通信制御部３５に電力を供給する。 The adjustment circuit 32 adjusts the AC waveform of the power received from the secondary coil 31. The adjustment circuit 32 can also smooth the output. The adjustment circuit 32 supplies power to the output circuit breaker 33, the communication modulator 34, and the communication control unit 35.
　出力遮断器３３は、パワーレシーバ３０が電力を供給しない場合に、出力電流を遮断する。また、出力遮断器３３は、パワーレシーバ３０が電力を供給しない場合に、電流が逆流することを防ぐ。 The output circuit breaker 33 interrupts the output current when the power receiver 30 does not supply power. The output circuit breaker 33 prevents the current from flowing backward when the power receiver 30 does not supply power.
　通信変調器３４は、通信制御部３５の指示に基づいてパワートランスミッタ５０に通信信号を送信する。通信制御部３５は、通信変調器３４を操作し、パワートランスミッタ５０の通信制御部５４にパケットを送信する。 The communication modulator 34 transmits a communication signal to the power transmitter 50 based on an instruction from the communication control unit 35. The communication control unit 35 operates the communication modulator 34 and transmits a packet to the communication control unit 54 of the power transmitter 50.
　図５は、通信制御部３５がパワートランスミッタ５０に送信するパケットの一例を示す図である。図５は、プライマリーコイル５２とセカンダリーコイル３１のカップリング度合いを信号強度値として示す信号強度パケットである。信号強度パケットは、フリーポジショニングを使用するパワートランスミッタ５０に最適な電力伝送を提供するプライマリーコイル５２の設定を目的として、信号強度をパワーレシーバ３０からパワートランスミッタ５０に伝えるものである。 FIG. 5 is a diagram illustrating an example of a packet that the communication control unit 35 transmits to the power transmitter 50. FIG. 5 is a signal strength packet indicating the degree of coupling between the primary coil 52 and the secondary coil 31 as a signal strength value. The signal strength packet transmits the signal strength from the power receiver 30 to the power transmitter 50 for the purpose of setting the primary coil 52 that provides optimal power transmission to the power transmitter 50 using free positioning.
　図５に示すように、通信制御部３５は、８ビットのデータで信号強度値をパワートランスミッタ５０に送信する。なお、パワーレシーバ３０は、整流された電圧、開回路電圧、受信パワーなどから信号強度値を決定する。 As shown in FIG. 5, the communication control unit 35 transmits the signal strength value to the power transmitter 50 using 8-bit data. The power receiver 30 determines the signal strength value from the rectified voltage, the open circuit voltage, the received power, and the like.
　また、通信制御部３５は、出力遮断器３３を制御し、パワーレシーバ３０及び負荷６０を監視制御する。また、通信制御部３５は、制御部２９からの指示に基づいて受電制御を行い、制御状態について制御部２９に通知する。 Further, the communication control unit 35 controls the output circuit breaker 33 and monitors and controls the power receiver 30 and the load 60. The communication control unit 35 performs power reception control based on an instruction from the control unit 29 and notifies the control unit 29 of the control state.
　次に、全体制御部４０の構成について説明する。図６は、全体制御部４０の機能構成を示す図である。図６に示すように、全体制御部４０は、給電指示部４１と、信号強度取得部４２と、位置特定部４３と、マッピング情報作成部４４と、ルーティングテーブル作成部４５とを有する。 Next, the configuration of the overall control unit 40 will be described. FIG. 6 is a diagram illustrating a functional configuration of the overall control unit 40. As shown in FIG. 6, the overall control unit 40 includes a power supply instruction unit 41, a signal strength acquisition unit 42, a position specifying unit 43, a mapping information creation unit 44, and a routing table creation unit 45.
　給電指示部４１は、パワートランスミッタ５０に給電を指示し、給電指示の一部としてｐｉｎｇの実行を指示する。ここで、ｐｉｎｇは、パワートランスミッタ５０が給電するパワーレシーバ３０を選択するために送信する電力信号である。ｐｉｎｇを受信したパワーレシーバ３０は、自ノードを識別するノードＩＤと受信した電力信号の信号強度値をパワートランスミッタ５０に送信する。 The power supply instruction unit 41 instructs the power transmitter 50 to supply power, and instructs execution of ping as part of the power supply instruction. Here, ping is a power signal transmitted to select the power receiver 30 to which the power transmitter 50 supplies power. The power receiver 30 that has received the ping transmits a node ID for identifying the node and a signal strength value of the received power signal to the power transmitter 50.
　信号強度取得部４２は、パワーレシーバ３０が送信したノードＩＤと信号強度値をパワートランスミッタ５０から取得する。信号強度取得部４２は、各パワートランスミッタ５０が受信した８個のノードＩＤ及び信号強度値を４つのパワートランスミッタ５０から受け取るため、合計３２個のノードＩＤと信号強度値を取得する。 The signal strength acquisition unit 42 acquires the node ID and the signal strength value transmitted from the power receiver 30 from the power transmitter 50. Since the signal strength acquisition unit 42 receives the eight node IDs and signal strength values received by each power transmitter 50 from the four power transmitters 50, the signal strength acquisition unit 42 acquires a total of 32 node IDs and signal strength values.
　位置特定部４３は、パワートランスミッタ５０の配置位置と信号強度取得部４２が取得した３２個のノードＩＤ及び信号強度値とに基づいて、各ノード２０の筐体内での位置を特定する。具体的には、位置特定部４３は、各パワートランスミッタ５０が受信した８個のノードＩＤを筐体１の各段に対応付ける。そして、位置特定部４３は、信号強度値の大きい順に筐体１の左のスロットからノードＩＤを対応付ける。 The position specifying unit 43 specifies the position of each node 20 in the housing based on the arrangement position of the power transmitter 50 and the 32 node IDs and signal intensity values acquired by the signal intensity acquisition unit 42. Specifically, the position specifying unit 43 associates the eight node IDs received by each power transmitter 50 with each stage of the housing 1. Then, the position specifying unit 43 associates node IDs from the left slot of the housing 1 in descending order of the signal strength value.
　また、位置特定部４３は、特定した位置を各ノード２０に管理無線で通知する。あるいは、位置特定部４３は、特定した位置をパワートランスミッタ５０及びパワーレシーバ３０を介して各ノード２０に通知することもできる。 Also, the position specifying unit 43 notifies each node 20 of the specified position by management radio. Alternatively, the position specifying unit 43 can notify each node 20 of the specified position via the power transmitter 50 and the power receiver 30.
　マッピング情報作成部４４は、筐体内のノード２０について位置特定部４３により特定された位置に基づいて、スロット位置とノードＩＤとを対応付けるマッピング情報を作成する。 The mapping information creating unit 44 creates mapping information for associating the slot position with the node ID based on the position specified by the position specifying unit 43 for the node 20 in the housing.
　ルーティングテーブル作成部４５は、マッピング情報作成部４４により作成されたマッピング情報に基づいて、各ノード２０のルーティングテーブルの情報を作成し、管理無線でルーティングテーブルの情報を各ノード２０の制御部２９に送信する。ルーティングテーブルの情報を受信した制御部２９は、自身のルーティングテーブルに情報を書き込む。 The routing table creation unit 45 creates routing table information of each node 20 based on the mapping information created by the mapping information creation unit 44, and sends the routing table information to the control unit 29 of each node 20 by managed radio. Send. The control unit 29 that has received the routing table information writes the information in its own routing table.
　図７は、ルーティングテーブルの情報の作成例を説明するための図である。図７において、各ノード２０は、短距離無線を用いて縦方向及び横方向に隣接するノード２０にしかフレームを送信しないものとする。ここで、短距離無線は、通常無線の１つである。ルーティングテーブル作成部４５は、先に横方向に隣接するノード２０にフレームを転送し、次に縦方向に隣接するノード２０にフレームを転送するようにルーティング情報を作成する。 FIG. 7 is a diagram for explaining an example of creating routing table information. In FIG. 7, it is assumed that each node 20 transmits a frame only to nodes 20 adjacent in the vertical and horizontal directions using short-range radio. Here, short-range radio is one of normal radio. The routing table creation unit 45 creates routing information so as to transfer a frame to the node 20 adjacent in the horizontal direction first, and then transfer the frame to the node 20 adjacent in the vertical direction.
　例えば、図７に示すように、送信元ノードＡから宛先ノードＯにフレームを送信する場合、ルーティングテーブル作成部４５は、宛先がノードＯであるフレームをノードＢに転送するようにノードＡのルーティング情報を作成する。また、ルーティングテーブル作成部４５は、宛先がノードＯであるフレームをノードＣに転送するようにノードＢのルーティング情報を作成する。 For example, as illustrated in FIG. 7, when a frame is transmitted from the transmission source node A to the destination node O, the routing table creation unit 45 performs routing of the node A so as to transfer a frame whose destination is the node O to the node B. Create information. Further, the routing table creation unit 45 creates the routing information of the node B so as to transfer the frame whose destination is the node O to the node C.
　また、ルーティングテーブル作成部４５は、宛先がノードＯであるフレームをノードＧに転送するようにノードＣのルーティング情報を作成する。また、ルーティングテーブル作成部４５は、宛先がノードＯであるフレームをノードＫに転送するようにノードＧのルーティング情報を作成する。また、ルーティングテーブル作成部４５は、宛先がノードＯであるフレームをノードＯに転送するようにノードＫのルーティング情報を作成する。 Further, the routing table creation unit 45 creates the routing information of the node C so as to transfer the frame whose destination is the node O to the node G. Further, the routing table creation unit 45 creates the routing information of the node G so as to transfer the frame whose destination is the node O to the node K. Further, the routing table creation unit 45 creates the routing information of the node K so as to transfer the frame whose destination is the node O to the node O.
　このように、ルーティングテーブル作成部４５は、各宛先ノードについてフレームの転送先を各ノード２０について特定することにより、ルーティングテーブルの情報を作成することができる。 As described above, the routing table creation unit 45 can create the routing table information by specifying the frame transfer destination for each node 20 for each destination node.
　図８は、ルーティングテーブルの情報の他の作成例を説明するための図である。図８において、ノードＡ、ノードＤ、ノードＭ及びノードＰは、短距離無線と長距離無線の両方で通信することができる。一方、その他のノードは、短距離無線でしか通信することができない。ここで、長距離無線も通常無線の１つである。 FIG. 8 is a diagram for explaining another example of creating routing table information. In FIG. 8, node A, node D, node M, and node P can communicate with both short-range radio and long-range radio. On the other hand, other nodes can communicate only by short-range radio. Here, the long-range radio is one of the normal radios.
　ノードＡ、ノードＤ、ノードＭ及びノードＰは、宛先ノードが長距離無線の機能を有する場合には、宛先ノードに長距離無線でフレームを送信する。また、ノードＡ、ノードＤ、ノードＭ及びノードＰは、宛先ノードが長距離無線の機能を有しない場合には、宛先ノードまでのホップ数に基づいて、フレームを転送する。すなわち、ノードＡ、ノードＤ、ノードＭ及びノードＰは、ホップ数が所定の閾値以内である場合には短距離無線を用いてフレームを転送し、ホップ数が所定の閾値以内でない場合には、宛先ノードに最も近く、長距離通信機能を有するノードにフレームを送信する。 Node A, Node D, Node M, and Node P transmit frames to the destination node by long-distance radio when the destination node has a long-distance radio function. Further, the node A, the node D, the node M, and the node P transfer a frame based on the number of hops to the destination node when the destination node does not have a long-distance wireless function. That is, the node A, the node D, the node M, and the node P transfer the frame using the short-range radio when the hop number is within the predetermined threshold, and when the hop number is not within the predetermined threshold, The frame is transmitted to the node closest to the destination node and having the long-distance communication function.
　一方、短距離無線の機能しか有しないその他のノードは、宛先ノードまでのホップ数に基づいて、フレームを転送する。すなわち、その他のノードは、ホップ数が所定の閾値以内である場合には短距離無線を用いてフレームを転送し、ホップ数が所定の閾値以内でない場合には、最も近く、長距離通信機能を有するノードにフレームを転送する。 On the other hand, other nodes having only short-range wireless functions transfer frames based on the number of hops to the destination node. That is, the other nodes transfer frames using short-range radio when the number of hops is within a predetermined threshold, and when the number of hops is not within the predetermined threshold, the other nodes are closest and have a long-range communication function. The frame is transferred to the node having it.
　例えば、図８に示すように、送信元ノードＡから宛先ノードＯにフレームを送信する場合、ルーティングテーブル作成部４５は、宛先がノードＯであるフレームをノードＰに長距離無線で転送するようにノードＡのルーティング情報を作成する。また、ルーティングテーブル作成部４５は、宛先がノードＯであるフレームをノードＯに短距離無線で転送するようにノードＰのルーティング情報を作成する。 For example, as shown in FIG. 8, when a frame is transmitted from the transmission source node A to the destination node O, the routing table creation unit 45 transfers the frame whose destination is the node O to the node P by long-distance radio. Create routing information for node A. In addition, the routing table creation unit 45 creates the routing information of the node P so that the frame whose destination is the node O is transferred to the node O by short-range radio.
　次に、ルーティングテーブルの作成処理のフローについて説明する。図９は、ルーティングテーブルの作成処理のフローを示すフローチャートである。図９に示すように、全体制御部４０の指示に基づいて、筐体１に配置されたパワートランスミッタ５０が、ｐｉｎｇを実行する（ステップＳ１）。 Next, the flow of the routing table creation process will be described. FIG. 9 is a flowchart illustrating a flow of a routing table creation process. As shown in FIG. 9, based on an instruction from the overall control unit 40, the power transmitter 50 arranged in the housing 1 executes ping (step S1).
　そして、パワートランスミッタ５０は、ノード２０のパワーレシーバ３０からの応答を待ち（ステップＳ２）、パワーレシーバ３０からの応答を検出したか否かを判定する（ステップＳ３）。その結果、パワーレシーバ３０からの応答を検出しない場合には、パワートランスミッタ５０は、ステップＳ２に戻って、パワーレシーバ３０からの応答を待つ。 Then, the power transmitter 50 waits for a response from the power receiver 30 of the node 20 (step S2), and determines whether a response from the power receiver 30 has been detected (step S3). As a result, when a response from the power receiver 30 is not detected, the power transmitter 50 returns to step S2 and waits for a response from the power receiver 30.
　一方、パワーレシーバ３０からの応答を検出した場合には、パワーレシーバ３０が送信したノードＩＤ及び信号強度値をパワートランスミッタ５０が受信する（ステップＳ４）。そして、パワートランスミッタ５０は、自分に割り当てられた全ノード２０のパワーレシーバ３０からノードＩＤ及び信号強度値を受信したか否かを判定し（ステップＳ５）、ノードＩＤ及び信号強度値を受信していないパワーレシーバ３０がある場合には、ステップＳ２に戻って、パワーレシーバ３０からの応答を待つ。 On the other hand, when the response from the power receiver 30 is detected, the power transmitter 50 receives the node ID and the signal strength value transmitted by the power receiver 30 (step S4). Then, the power transmitter 50 determines whether or not the node ID and the signal strength value have been received from the power receivers 30 of all the nodes 20 assigned to itself (step S5), and has received the node ID and the signal strength value. If there is no power receiver 30, the process returns to step S <b> 2 and waits for a response from the power receiver 30.
　なお、ステップＳ１～ステップＳ５の処理は、各パワートランスミッタ５０により行われる。そして、全ノード２０のパワーレシーバ３０からノードＩＤ及び信号強度値を受信すると、全体制御部４０が、ノードＩＤ及び信号強度値に基づいて各ノード２０の位置を特定する（ステップＳ６）。 Note that the processing of step S1 to step S5 is performed by each power transmitter 50. When the node IDs and signal strength values are received from the power receivers 30 of all the nodes 20, the overall control unit 40 identifies the position of each node 20 based on the node IDs and signal strength values (step S6).
　そして、全体制御部４０が、特定した位置を管理無線により各ノード２０に通知し（ステップＳ７）、マッピング情報を作成する（ステップＳ８）。そして、全体制御部４０が、マッピング情報に基づいて、ルーティングテーブルの情報を作成して各ノード２０に送信する（ステップＳ９）。 Then, the overall control unit 40 notifies each node 20 of the specified position by management radio (step S7), and creates mapping information (step S8). Then, the overall control unit 40 creates routing table information based on the mapping information and transmits it to each node 20 (step S9).
　このように、全体制御部４０が、ルーティングテーブルの情報を作成して各ノード２０に送信するので、各ノード２０は、自動でルーティングテーブルを設定することができる。 Thus, since the overall control unit 40 creates routing table information and transmits it to each node 20, each node 20 can automatically set the routing table.
　なお、全体制御部４０の機能はファームウェアにより実現される。そこで、ファームウェアにより実現される全体制御部４０のハードウェア構成について説明する。図１０は、全体制御部４０のハードウェア構成を示す図である。図１０に示すように、全体制御部４０は、ＭＰＵ４６と、フラッシュメモリー４７と、ＲＡＭ４８とを有する。 The functions of the overall control unit 40 are realized by firmware. Therefore, the hardware configuration of the overall control unit 40 realized by firmware will be described. FIG. 10 is a diagram illustrating a hardware configuration of the overall control unit 40. As shown in FIG. 10, the overall control unit 40 includes an MPU 46, a flash memory 47, and a RAM 48.
　ＭＰＵ４６は、フラッシュメモリー４７からプログラムを読み出して実行する演算処理装置である。フラッシュメモリー４７は、プログラムを記憶する不揮発性メモリーである。ＲＡＭ４８は、プログラムの途中結果などを記憶するメモリーである。 The MPU 46 is an arithmetic processing unit that reads a program from the flash memory 47 and executes it. The flash memory 47 is a nonvolatile memory that stores a program. The RAM 48 is a memory that stores intermediate results of the program.
　上述してきたように、実施例では、筐体１に配置されたパワートランスミッタ５０が、ｐｉｎｇを実行し、各ノード２０のパワーレシーバ３０からノードＩＤ及び信号強度値を受信する。そして、全体制御部４０が、パワートランスミッタ５０からノードＩＤ及び信号強度値を取得し、取得したノードＩＤ及び信号強度値に基づいて各ノード２０の位置を特定する。したがって、情報処理システム１０は、筐体内のノード配置を自動で把握することができる。 As described above, in the embodiment, the power transmitter 50 arranged in the housing 1 executes ping and receives the node ID and the signal strength value from the power receiver 30 of each node 20. Then, the overall control unit 40 acquires the node ID and the signal strength value from the power transmitter 50, and specifies the position of each node 20 based on the acquired node ID and the signal strength value. Therefore, the information processing system 10 can automatically grasp the node arrangement in the housing.
　また、全体制御部４０は、特定したノード配置に基づいて、ルーティングテーブルの情報を作成し、各ノード２０に送信する。したがって、情報処理システム１０は、自動で各ノード２０のルーティングテーブルの設定を行うことができる。 Further, the overall control unit 40 creates routing table information based on the identified node arrangement and transmits it to each node 20. Therefore, the information processing system 10 can automatically set the routing table of each node 20.
　なお、実施例では、各パワートランスミッタ５０が８個のノード２０に給電する場合について説明したが、本発明はこれに限定されるものではなく、各パワートランスミッタ５０が１個のノード２０に給電することもできる。その場合、全体制御部は、各パワートランスミッタが受信したノードＩＤと各トランスミッタの位置から、筐体内の各ノードの位置を特定することができる。したがって、情報処理システム１０は、信号強度値を用いることなく、筐体内のノード配置を自動で把握することができる。 In the embodiment, the case where each power transmitter 50 supplies power to eight nodes 20 has been described. However, the present invention is not limited to this, and each power transmitter 50 supplies power to one node 20. You can also In this case, the overall control unit can specify the position of each node in the housing from the node ID received by each power transmitter and the position of each transmitter. Therefore, the information processing system 10 can automatically grasp the node arrangement in the housing without using the signal intensity value.
　また、実施例では、４つのパワートランスミッタ５０を用いる場合について説明したが、本発明はこれに限定されるものではなく、１つのトランスミッタ５０だけを用いることもできる。その場合、全体制御部は、信号強度値から、筐体内の各ノードの位置を特定することができる。したがって、情報処理システム１０は、トランスミッタの位置を用いることなく、筐体内のノード配置を自動で把握することができる。 In the embodiment, the case where four power transmitters 50 are used has been described. However, the present invention is not limited to this, and only one transmitter 50 can be used. In this case, the overall control unit can specify the position of each node in the housing from the signal intensity value. Therefore, the information processing system 10 can automatically grasp the node arrangement in the housing without using the position of the transmitter.
　また、実施例では、各パワートランスミッタ５０がノードＩＤ及び信号強度値を受信する場合について説明した。しかしながら、本発明はこれに限定されるものではなく、例えば、管理無線など、他の通信手段を用いてノードＩＤ及び信号強度値を受信する場合に同様に適用することができる。 In the embodiment, the case where each power transmitter 50 receives the node ID and the signal strength value has been described. However, the present invention is not limited to this, and can be similarly applied to the case where the node ID and the signal strength value are received using other communication means such as a management radio.
　また、本実施例では、ノード２０を２次元に配置する場合について説明したが、本発明はこれに限定されるものではなく、ノード２０を３次元に配置する場合にも同様に適用することができる。 In this embodiment, the case where the nodes 20 are arranged two-dimensionally has been described. However, the present invention is not limited to this, and the same applies to the case where the nodes 20 are arranged three-dimensionally. it can.
　また、本実施例では、ネットワークスイッチ１１に全体制御部４０が含まれる場合について説明したが、本発明はこれに限定されるものではなく、例えば、全体制御部を筐体１に配置するなど、全体制御部を他の場所に配置する場合にも同様に適用することができる。 In the present embodiment, the case where the network switch 11 includes the overall control unit 40 has been described. However, the present invention is not limited to this, and for example, the overall control unit is disposed in the housing 1. The same can be applied to the case where the overall control unit is arranged at another location.
　また、本実施例では、共振回路を用いて無線電力を供給する場合について説明したが、本発明はこれに限定されるものではなく、他の方法を用いて無線電力を供給する場合にも同様に適用することができる。 In this embodiment, the case where wireless power is supplied using a resonance circuit has been described. However, the present invention is not limited to this, and the same applies to the case where wireless power is supplied using other methods. Can be applied to.
　また、本実施例では、ＭＡＣアドレスからノードＩＤが生成される場合について説明したが、本発明はこれに限定されるものではなく、他の情報からノードＩＤが生成される場合にも同様に適用することができる。 In the present embodiment, the case where the node ID is generated from the MAC address has been described. However, the present invention is not limited to this, and the same applies to the case where the node ID is generated from other information. can do.
　　１　　筐体
　１０　　情報処理システム
　１１　　ネットワークスイッチ
　１１ａ，２０ａ　　通常無線用無線アンテナ
　１１ｂ，２０ｂ　　管理無線用無線アンテナ
　２０　　ノード
　２０ｃ　　無線給電用アンテナ
　２１　　ＣＰＵ
　２２　　メモリーコントローラ
　２３　　メモリー
　２４　　ストレージコントローラ
　２５　　ストレージ
　２６　　無線ＬＡＮコントローラ
　２７　　ベースバンド及びＲＦ部
　２８　　インターコネクト
　２９　　制御部
　３０　　パワーレシーバ
　３１　　セカンダリーコイル
　３２　　調整回路
　３３　　出力遮断器
　３４　　通信変調器
　３５　　通信制御部
　４０　　全体制御部
　４１　　給電指示部
　４２　　信号強度取得部
　４３　　位置特定部
　４４　　マッピング情報作成部
　４５　　ルーティングテーブル作成部
　４６　　ＭＰＵ
　４７　　フラッシュメモリー
　４８　　ＲＡＭ
　５０　　パワートランスミッタ
　５１　　インバータ
　５２　　プライマリーコイル
　５３　　カレントセンス
　６０　　負荷 DESCRIPTION OF SYMBOLS 1 Case 10 Information processing system 11 Network switch 11a, 20a Radio | wireless antenna for normal radio | wireless 11b, 20b Radio antenna for management radio | wireless 20 Node 20c Radio feed antenna 21 CPU
DESCRIPTION OF SYMBOLS 22 Memory controller 23 Memory 24 Storage controller 25 Storage 26 Wireless LAN controller 27 Baseband and RF part 28 Interconnect 29 Control part 30 Power receiver 31 Secondary coil 32 Adjustment circuit 33 Output circuit breaker 34 Communication modulator 35 Communication control part 40 Overall control part 41 Power Supply Instruction Unit 42 Signal Strength Acquisition Unit 43 Position Identification Unit 44 Mapping Information Creation Unit 45 Routing Table Creation Unit 46 MPU
47 Flash memory 48 RAM
50 Power transmitter 51 Inverter 52 Primary coil 53 Current sense 60 Load

Claims (5)

  1. 　複数の情報処理装置を筐体に搭載した情報処理システムにおいて、
    　無線で所定の数の情報処理装置に電力を供給し、該電力を供給した各情報処理装置から各情報処理装置を識別する識別子及び前記無線の信号強度を受信する電力供給部と、
    　前記識別子及び前記信号強度に基づいて筐体内の各情報処理装置の位置を特定する特定部と
    　を有することを特徴とする情報処理システム。     In an information processing system in which a plurality of information processing devices are mounted in a housing,
    A power supply unit that wirelessly supplies power to a predetermined number of information processing devices, receives an identifier for identifying each information processing device from each information processing device that has supplied the power, and the wireless signal strength;
    An information processing system comprising: a specifying unit that specifies a position of each information processing device in the housing based on the identifier and the signal strength.
  2. 　前記電力供給部は、複数あり、
    　前記特定部は、前記識別子、前記信号強度及び各電力供給部の位置に基づいて筐体内の各情報処理装置の位置を特定することを特徴とする請求項１に記載の情報処理システム。     There are a plurality of the power supply units,
    The information processing system according to claim 1, wherein the specifying unit specifies a position of each information processing device in a housing based on the identifier, the signal strength, and a position of each power supply unit.
  3. 　外部ネットワークに接続するネットワークスイッチを備え、
    　前記特定部は前記ネットワークスイッチの一部として含まれることを特徴とする請求項１または２に記載の情報処理システム。     It has a network switch that connects to an external network,
    The information processing system according to claim 1, wherein the specifying unit is included as a part of the network switch.
  4. 　複数の情報処理装置の筐体内の位置を特定する位置特定方法において、
    　無線で所定の数の情報処理装置に無線給電装置が電力を供給し、
    　該電力を供給した各情報処理装置から各情報処理装置を識別する識別子及び前記無線の信号強度を前記無線給電装置が受信し、
    　前記複数の情報処理装置を制御する制御部が前記識別子及び前記信号強度に基づいて筐体内の各情報処理装置の位置を特定する
    　処理を実行することを特徴とする位置特定方法。     In a position specifying method for specifying positions in a housing of a plurality of information processing devices,
    The wireless power feeder supplies power to a predetermined number of information processing devices wirelessly,
    The wireless power supply apparatus receives an identifier for identifying each information processing apparatus from each information processing apparatus that has supplied the power and the wireless signal strength,
    A position specifying method, wherein a control unit that controls the plurality of information processing devices executes a process of specifying a position of each information processing device in a housing based on the identifier and the signal strength.
  5. 　複数の情報処理装置の筐体内の位置をコンピュータに特定させる位置特定プログラムにおいて、
    　無線で所定の数の情報処理装置に電力を供給する無線給電装置に給電を指示し、
    　前記無線給電装置により電力を供給された各情報処理装置から各情報処理装置を識別する識別子及び前記無線の信号強度を該無線給電装置を介して受信し、
    　前記識別子及び前記信号強度に基づいて筐体内の各情報処理装置の位置を特定する
    　処理を前記コンピュータに実行させることを特徴とする位置特定プログラム。     In a position specifying program for causing a computer to specify positions in a housing of a plurality of information processing apparatuses,
    Instructing the wireless power feeder to supply power to a predetermined number of information processing devices wirelessly,
    Receiving an identifier for identifying each information processing device from each information processing device supplied with power by the wireless power feeding device and the wireless signal strength via the wireless power feeding device;
    A position specifying program that causes the computer to execute a process of specifying the position of each information processing device in a housing based on the identifier and the signal strength.
PCT/JP2013/077675 2013-10-10 2013-10-10 Information processing system, position identification method, and position identification program WO2015052819A1 (en)

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JP2008536348A (en) * 2005-02-22 2008-09-04 スカイフック ワイヤレス，インク． Continuous data optimization in positioning systems

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JP4934441B2 (en) * 2007-01-22 2012-05-16 株式会社日立製作所 Wireless node position estimation method, system, and processing apparatus therefor
JP5364749B2 (en) * 2011-03-24 2013-12-11 株式会社東芝 Wireless system and position estimator

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JP2004220264A (en) * 2003-01-14 2004-08-05 Mitsubishi Electric Corp Electronic equipment
JP2008536348A (en) * 2005-02-22 2008-09-04 スカイフック ワイヤレス，インク． Continuous data optimization in positioning systems
JP2006260327A (en) * 2005-03-18 2006-09-28 Fujitsu Ltd Blade-type computer, blade management device, and blade management program

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