WO2015052819A1 - Système de traitement d'informations, procédé d'identification de position et programme d'identification de position - Google Patents

Système de traitement d'informations, procédé d'identification de position et programme d'identification de position 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
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English (en)
Japanese (ja)
Inventor
達彦 根岸
Original Assignee
富士通株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to PCT/JP2013/077675 priority Critical patent/WO2015052819A1/fr
Priority to JP2015541388A priority patent/JP5954501B2/ja
Publication of WO2015052819A1 publication Critical patent/WO2015052819A1/fr

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Classifications

    • 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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  • Engineering & Computer Science (AREA)
  • 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

L'invention concerne notamment un émetteur (50) de puissance, situé à l'intérieur d'un boîtier (1), qui envoie un sondage et reçoit un identifiant de nœud et une intensité de signal en provenance d'un récepteur (30) de puissance sur chaque nœud d'une multiplicité de nœuds (20). Une unité (40) de commande d'ensemble obtient lesdits identifiants de nœuds et lesdites intensités de signaux à partir de l'émetteur (50) de puissance et identifie la position de chaque nœud (20) sur la base des identifiants de nœuds et des intensités de signaux obtenus. Sur la base de la disposition des nœuds identifiés, l'unité (40) de commande d'ensemble crée des informations de table de routage et les envoie à chaque nœud (20).
PCT/JP2013/077675 2013-10-10 2013-10-10 Système de traitement d'informations, procédé d'identification de position et programme d'identification de position WO2015052819A1 (fr)

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PCT/JP2013/077675 WO2015052819A1 (fr) 2013-10-10 2013-10-10 Système de traitement d'informations, procédé d'identification de position et programme d'identification de position
JP2015541388A JP5954501B2 (ja) 2013-10-10 2013-10-10 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

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PCT/JP2013/077675 WO2015052819A1 (fr) 2013-10-10 2013-10-10 Système de traitement d'informations, procédé d'identification de position et programme d'identification de position

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004220264A (ja) * 2003-01-14 2004-08-05 Mitsubishi Electric Corp 電子機器
JP2006260327A (ja) * 2005-03-18 2006-09-28 Fujitsu Ltd ブレード型コンピュータ、ブレード管理装置、及びブレード管理プログラム
JP2008536348A (ja) * 2005-02-22 2008-09-04 スカイフック ワイヤレス，インク． 測位システムにおける連続データ最適化

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6473038B2 (en) * 2001-01-05 2002-10-29 Motorola, Inc. Method and apparatus for location estimation
JP4934441B2 (ja) * 2007-01-22 2012-05-16 株式会社日立製作所 無線ノード位置推定方法、システム、及びその処理装置
JP5364749B2 (ja) * 2011-03-24 2013-12-11 株式会社東芝 無線システムおよび位置推定機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004220264A (ja) * 2003-01-14 2004-08-05 Mitsubishi Electric Corp 電子機器
JP2008536348A (ja) * 2005-02-22 2008-09-04 スカイフック ワイヤレス，インク． 測位システムにおける連続データ最適化
JP2006260327A (ja) * 2005-03-18 2006-09-28 Fujitsu Ltd ブレード型コンピュータ、ブレード管理装置、及びブレード管理プログラム

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