WO2012008246A1 - 通信装置および通信装置の動作方法 - Google Patents
通信装置および通信装置の動作方法 Download PDFInfo
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- WO2012008246A1 WO2012008246A1 PCT/JP2011/063263 JP2011063263W WO2012008246A1 WO 2012008246 A1 WO2012008246 A1 WO 2012008246A1 JP 2011063263 W JP2011063263 W JP 2011063263W WO 2012008246 A1 WO2012008246 A1 WO 2012008246A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/03—Protocol definition or specification
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Definitions
- the present invention relates to communication technology.
- Patent Document 1 proposes a communication system that transmits information held by a communication device to another communication device using wired communication and wireless communication.
- a communication device capable of communicating with different communication methods has a separate configuration for each communication method in order to realize communication with each communication method.
- an object of the present invention is to provide a technology capable of reducing the cost of a communication device capable of communicating with different communication methods.
- a first aspect of a communication device includes at least one of first communication means capable of communicating by a first communication method and hardware for realizing communication of the first communication method.
- first communication means capable of communicating by a first communication method and hardware for realizing communication of the first communication method.
- a second communication means capable of communicating in a second communication method different from the first communication method, and among the first communication means and the second communication means,
- a selection unit that selects which communication unit to use, and a communication by the first communication method or a communication by the second communication method to the shared hardware according to a command from the selection unit
- Setting control means for performing setting for enabling is provided.
- a second aspect of the communication apparatus is the first aspect, wherein the selection unit selects the first communication unit at a predetermined timing according to a communication protocol, and the selection unit The second communication means is selected at a timing other than the predetermined timing.
- a third aspect of the communication apparatus is the second aspect, wherein the communication by the first communication method is synchronous communication performed at the predetermined timing according to the communication protocol.
- a fourth aspect of the communication apparatus is the second aspect or the third aspect, and the communication protocol is included in a protocol that defines a communication protocol in a smart grid.
- the communication device operating method shares at least a part of hardware among the first communication means capable of communicating by the first communication method and the hardware realizing the communication of the first communication method. And a second communication unit that can communicate with a second communication method different from the first communication method, and a) the first communication unit and the second communication. A step of selecting which one of the communication means to use; and b) communication by the first communication method or the second communication to the shared hardware according to the selection in the step a). And a step of performing settings for enabling communication by a method.
- FIG. 1 is a diagram illustrating a configuration of a communication system 1 according to the embodiment.
- the communication system 1 includes a communication device 10, a relay device 7 connected to a communication network NT such as the Internet, and household appliances (home appliances) existing in a home 80 as a facility 8. ) 5 and each sensor 6 installed indoors and outdoors.
- a communication network NT such as the Internet
- household appliances home appliances
- each sensor 6 installed indoors and outdoors.
- the communication device 10 has a function capable of communicating with the relay device 7, the home appliance 5, and the sensor 6 using different communication methods. Specifically, the communication device 10 is configured to be able to communicate with the home appliance 5 by power line communication (PLC: power line communication) using the power line 30 as a communication medium.
- the communication device 10 is configured to be communicable with the relay device 7 by wireless communication based on the IEEE 802.11 standard (also referred to as “wireless LAN communication”), and by wireless communication based on the IEEE 802.15.4g standard. It is configured to be able to communicate with the sensor 6.
- wireless LAN communication for example, communication is performed using a radio signal in a frequency band centered on a frequency of 2.5 GHz. In wireless communication based on the IEEE 802.15.4g standard, a frequency of 950 MHz is the center. Communication is performed using a radio signal in a frequency band as a frequency.
- wireless LAN communication is also referred to as “communication of the first communication method”
- wireless communication (950 MHz communication) based on the IEEE 802.15.4g standard is also referred to as “communication of the second communication method”.
- power line communication (PLC) is also referred to as “third communication method communication”.
- Sensor 6 includes a temperature sensor, a humidity sensor, a gas meter for measuring the amount of gas used, and the like.
- the communication device 10 can acquire environment information from the sensor 6 by wireless communication using a frequency band of 950 MHz.
- the home appliance 5 includes a TV, a refrigerator, an air conditioner and the like.
- the communication device 10 also has a function of transmitting control information to each home appliance 5 by power line communication and controlling each home appliance 5.
- the control information may be information set by the communication device 10 based on the environment information.
- FIG. 1 a mode in which communication with the relay device 7 on the utility pole is performed to connect to the communication network NT is illustrated.
- a router in the home is used as a relay device, and the router and the communication device 10 are connected. May be connected to the communication network NT by performing communication.
- the communication device 10 realizes in-facility communication (indoor communication) or out-of-facility communication (outdoor communication) with various electronic devices using a plurality of different communication methods.
- the communication device 10 may have a function as a watt-hour meter (power meter) that measures the power consumed in the home 80.
- the communication device 10 serves as a next-generation power network. The case where it is used as a component of a communication network in the smart grid is illustrated.
- FIG. 2 is a block diagram illustrating a functional configuration of the communication device 10.
- the communication device 10 includes a communication unit 110 connected to the antenna elements AN1 and AN2, a communication processing unit 120, an overall control unit 130, a schedule management unit 140, a PLC modem 150, An external I / F 160 for connecting to an external device (for example, an external storage device) is provided.
- the communication unit 110 performs wireless communication with an external communication device (external communication device) in cooperation with the antenna elements AN1 and AN2. Specifically, the communication unit 110 receives data transmitted from an external communication device via the antenna elements AN1 and AN2, and outputs the received data to the communication processing unit 120. Further, the communication unit 110 wirelessly transmits a signal (transmission signal) including transmission data input from the communication processing unit 120 to an external communication device via the antenna elements AN1 and AN2.
- a signal transmission signal
- the communication unit 110 is configured as a communication unit capable of wireless communication with various external communication devices by two different communication methods in cooperation with the communication processing unit 120 described later. More specifically, the communication unit 110 includes a bandpass filter 111A connected to the antenna element AN1, a transmission / reception switching unit SW1 connected to the bandpass filter 111A, and a bandpass filter 111B connected to the antenna element AN2. And a transmission / reception switching unit SW2 connected to the bandpass filter 111B.
- the communication unit 110 when performing communication of the first communication method (wireless LAN communication), transmits and receives wireless signals using the antenna element AN1, the bandpass filter 111A, and the transmission / reception switching unit SW1.
- the communication unit 110 when performing communication in a second communication method (950 MHz communication) different from the first communication method, transmits and receives radio signals using the antenna element AN2, the bandpass filter 111B, and the transmission / reception switching unit SW2.
- a second communication method 950 MHz communication
- the band-pass filter 111A extracts and outputs a reception signal to be processed in the first communication method from signals received by the antenna element AN1.
- the reception signal output from the band pass filter 111A is input to a low noise amplifier (LNA: Low Noise Amplifier) 112 via the transmission / reception switching unit SW1.
- LNA Low Noise Amplifier
- the low noise amplifier 112 amplifies the input received signal and outputs it.
- the reception signal output from the low noise amplifier 112 is input to the mixer 113.
- the mixer 113 multiplies the reference signal of a predetermined frequency output from the oscillation circuit 114 and the received signal, and converts the frequency band of the received signal to a lower frequency band (here, the base band).
- the baseband received signal output from the mixer 113 is input to the A / D conversion circuit 116 via the selector 115.
- the A / D conversion circuit 116 converts the received analog format received signal into a digital format received signal, and outputs it to the communication processing unit 120.
- the transmission signal input from the communication processing unit 120 is converted from a digital transmission signal to an analog transmission signal in the D / A conversion circuit 117.
- the analog transmission signal output from the D / A conversion circuit 117 is input to the mixer 118.
- the mixer 118 multiplies the reference signal output from the oscillation circuit 114 and the transmission signal, and converts the frequency band of the transmission signal into a higher frequency band (here, the carrier band).
- the carrier band transmission signal output from the mixer 118 is input to the power amplifier (PA) 119.
- PA power amplifier
- the power amplifier 119 amplifies and outputs the input transmission signal.
- the transmission signal output from the power amplifier 119 is input to the band pass filter 111A via the transmission / reception switching unit SW1.
- the band pass filter 111A removes unnecessary signals from the transmission signal by performing a predetermined filtering process on the input transmission signal.
- the transmission signal output from the band pass filter 111A is output as a radio signal via the antenna element AN1.
- wireless signals are transmitted and received using the antenna element AN1, the bandpass filter 111A, and the transmission / reception switching unit SW1.
- wireless signals are transmitted and received using the antenna element AN2, the bandpass filter 111B, and the transmission / reception switching unit SW2.
- the transmission / reception switching unit SW2 is connected to the low noise amplifier 112, and the received signal is output to the communication processing unit 120 via the low noise amplifier 112, the mixer 113, the selector 115, and the A / D conversion circuit 116.
- the transmission / reception switching unit SW2 is connected to the power amplifier 119, and the transmission signal input from the communication processing unit 120 to the communication unit 110 is transmitted / received via the D / A conversion circuit 117, the mixer 118, and the power amplifier 119. This is input to the part SW2.
- one band pass filter and one transmission / reception switching unit are provided according to the first communication method and the second communication method.
- the communication unit 110 This is done using common hardware resources.
- the communication unit 110 also performs a part of the hardware resources in the communication unit 110 (specifically, A / D) even when performing communication of the third communication method (power line communication) using the PLC modem 150 described later.
- a conversion circuit 116 and a D / A conversion circuit 117) are provided.
- the communication unit 110 is also expressed as functioning as a communication unit capable of communicating by the third communication method in cooperation with the communication processing unit 120 and the PLC modem 150.
- the communication processing unit 120 is composed of, for example, a DSP (Digital Signal Processor).
- the DSP realizes various functional units by reading a program stored in a storage unit (not shown) attached to the DSP and executing the program.
- a baseband processing unit 121 a baseband processing unit 121, a MAC (Media Access Control) 122, a communication control unit 123, and a sequence control unit 124 are functionally realized. .
- a baseband processing unit 121 a baseband processing unit 121, a MAC (Media Access Control) 122, a communication control unit 123, and a sequence control unit 124 are functionally realized. .
- MAC Media Access Control
- the baseband processing unit 121 performs baseband processing. More specifically, the baseband processing unit 121 converts the baseband received signal into a signal suitable for analysis, and converts the transmission data input from the overall control unit 130 into a signal suitable for wireless transmission. I do.
- the MAC 122 performs access control processing corresponding to the MAC layer in the hierarchical structure of data communication. For example, the MAC 122 removes the additional information from the baseband received signal input from the communication unit 110 and outputs the received signal after the removal to the baseband processing unit 121. In addition, the MAC 122 adds predetermined information to the transmission signal input from the baseband processing unit 121 and outputs the transmission signal after the information addition to the communication unit 110.
- the communication control unit 123 controls the communication operation by the communication unit 110. Specifically, the communication control unit 123 controls the transmission / reception switching units SW1 and SW2, the oscillation circuit 114, and the selector 115 to control the communication operation according to the communication method.
- the sequence control unit 124 operates the communication processing unit 120 by a communication method according to a command from the schedule management unit 140 described later. Specifically, the sequence control unit 124 enables the baseband processing unit 121, the MAC 122, and the communication control unit 123 according to the communication method so that communication of the communication method according to the command from the schedule management unit 140 can be executed. Is realized functionally. That is, the baseband processing unit 121, the MAC 122, and the communication control unit 123 described above are realized by executing a program selected by the sequence control unit 124.
- the sequence control unit 124 when receiving an instruction from the schedule management unit 140 to perform communication in the first communication method, the sequence control unit 124 reads a program for realizing communication in the first communication method from the storage unit. Then, the sequence control unit 124 operates the communication processing unit 120 so that communication of the first communication method can be executed by causing the DSP to execute the program.
- the baseband processing unit 121, the MAC 122, and the communication control unit 123 corresponding to the first communication method are functionally realized. That is, the baseband processing unit 121 and the MAC 122 realized according to the first communication method respectively perform baseband processing and MAC processing according to the first communication method.
- the communication control unit 123 realized according to the first communication method switches the transmission / reception switching unit SW1 according to the transmission process and the reception process, and generates a reference signal having a frequency according to the first communication method.
- the oscillation circuit 114 is controlled.
- the communication control unit 123 controls the selector 115 so as to output the reception signal from the mixer 113 to the A / D conversion circuit 116.
- the sequence control unit 124 functions as a setting control unit that automatically sets the communication device 10 so as to be communicable by a communication method according to the command in response to the command from the schedule management unit 140.
- the overall control unit 130 is configured as a microcomputer, and mainly includes a CPU, a RAM, a ROM (all not shown), and the like.
- the overall control unit 130 functionally implements the communication protocol processing unit 131 by reading a program stored in the ROM and executing the program by the CPU.
- the communication protocol processing unit 131 performs processing according to the communication protocol in order to cause the communication device to execute a communication operation according to the communication protocol. For example, the communication protocol processing unit 131 sets the schedule management unit 140 so as to perform schedule management according to the communication protocol. The setting of the schedule management unit 140 by the communication protocol processing unit 131 is performed when the communication device 10 is activated.
- the schedule management unit 140 performs schedule management of communication operations executed in the communication device 10. Specifically, after being initialized by the communication protocol processing unit 131, the schedule management unit 140 performs schedule management according to the communication protocol, and issues a communication operation command to the sequence control unit 124 of the communication processing unit 120. Output.
- the communication protocol includes a rule for performing communication (synchronous communication) in synchronization with another communication device at a predetermined timing.
- the schedule management unit 140 outputs an operation command for performing synchronous communication to the sequence control unit 124 at a predetermined timing based on the rules.
- the communication of the second communication method and the communication of the third communication method are illustrated as being performed in synchronization with other communication devices. That is, when it is time to execute communication of the second communication method, the schedule management unit 140 outputs an operation command for performing communication of the second communication method to the sequence control unit 124, and the communication device 10 The communication operation of the two communication method is executed. Further, when it is time to execute communication of the third communication method, the schedule management unit 140 outputs an operation command for performing communication of the third communication method to the sequence control unit 124, and the communication device 10 The communication operation of the three communication methods is executed.
- synchronous communication is communication in which data transmission is performed while synchronizing between the transmission side and the reception side, and the synchronous communication performed at a predetermined timing includes, for example, communication performed at regular intervals.
- a communication protocol including a protocol for performing such synchronous communication is included in a protocol that defines a protocol for communication in the smart grid.
- the schedule management unit 140 performs schedule management so that asynchronous communication is performed at a timing other than the timing of performing synchronous communication.
- the first communication method is exemplified as asynchronous communication.
- the schedule management unit 140 has a function as a selection unit that automatically and selectively selects which one of a plurality of communication methods is used for communication.
- the PLC modem 150 includes a PLC analog front end 151 including an analog amplifier and the like, and a coupling circuit 152 to the power line 30.
- the PLC modem 150 has a function of generating a PLC signal based on a transmission signal from the communication processing unit 120 input via the D / A conversion circuit 117 and superimposing the PLC signal on the power line 30. Further, the PLC modem 150 has a function of demodulating the received PLC signal, obtaining the received signal, and outputting the received signal to the communication unit 110. As described above, the PLC modem 150 realizes power line communication using the power line 30 as a communication medium.
- FIG. 3 is a diagram illustrating a communication state of the communication device 10 shown in time series.
- a communication apparatus displaying the communication timing TP of power line communication, the communication timing TQ of 950 MHz communication, the communication timing TL of wireless LAN communication, and the communication timings of these power line communication, 950 MHz communication, and wireless LAN communication. 10 communication timings TA are shown.
- power line communication is performed at a timing TM ⁇ b> 1 with a predetermined cycle
- 950 MHz communication is performed with a timing TM ⁇ b> 2 with a predetermined cycle different from the timing of the power line communication.
- the execution timings TM1 and TM2 of power line communication and 950 MHz communication are managed by the schedule management unit 140, and each time the execution timings TM1 and TM2 arrive, the schedule management unit 140 communicates according to the execution timings TM1 and TM2. Is output to the sequence control unit 124.
- the sequence control unit 124 When the sequence control unit 124 receives the operation command, the sequence control unit 124 operates the communication processing unit 120 by a communication method according to the operation command. Thereby, the communication apparatus 10 is set so that desired communication can be performed at each execution timing TM1 and TM2.
- the power line communication and the 950 MHz communication are executed as the synchronous communication at predetermined timings at different timings.
- wireless LAN communication is executed at an arbitrary timing TM3 other than the synchronous communication execution timings TM1 and TM2.
- the schedule management unit 140 outputs a setting change command for executing asynchronous communication (wireless LAN communication) to the sequence control unit 124.
- the sequence control unit 124 receives the setting change command, the sequence control unit 124 operates the communication processing unit 120 so that wireless LAN communication can be executed. More specifically, the sequence control unit 124 reads the program for realizing the wireless LAN communication from the storage unit, and operates the communication processing unit 120 so that the wireless LAN communication can be realized by executing the program. . Thereby, the communication apparatus 10 is set so that wireless LAN communication can be performed.
- the period PD indicated by the double arrow is a period set so that wireless LAN communication can be performed.
- the communication device 10 set to be able to perform wireless LAN communication is in a state where it can receive transmission signals from other communication devices that perform wireless LAN communication, and performs wireless LAN communication at the timing TM3 when the transmission signal is received. Execute.
- the communication device 10 is set so that asynchronous communication can be executed in a period in which synchronous communication is not executed (synchronous communication non-execution period).
- the non-execution period of synchronous communication is also referred to as an executable period of asynchronous communication.
- the communication device 10 When a transmission signal is output from another communication device that performs wireless LAN communication during a period in which synchronous communication is executed (synchronous communication execution period), the communication device 10 receives the transmission signal and performs asynchronous processing. Communication cannot be performed. However, when another communication device that performs wireless LAN communication has a function of resending the transmission data when the transmission data cannot be transmitted to the counterpart device, the communication device 10 does not execute the synchronous communication non-execution period. Asynchronous communication can be executed and the retransmitted transmission data can be acquired.
- FIG. 4 shows a communication operation of the communication apparatus 10 when a transmission signal is output from another communication apparatus that performs wireless LAN communication in the execution period KT of 950 MHz communication that is synchronous communication.
- the transmission data is retransmitted by another communication apparatus, and the communication apparatus 10 and the other communication apparatus are asynchronous. Communication (wireless LAN communication) is being performed.
- the hardware that realizes synchronous communication (specifically, the communication unit 110 and the communication processing unit 120) and the hardware that realizes asynchronous communication (the communication unit 110 and the communication processing unit 120) Is configured to share at least a part of hardware.
- the communication device 10 performs the synchronous communication and the asynchronous communication using the shared hardware at different times, in other words, using the shared hardware as the shared hardware in a time division manner.
- FIG. 5 shows the communication state of the case (1)
- FIG. 6 shows the communication state of the case (2)
- FIG. The communication state of case (3) is shown.
- the non-execution period PD50 of the synchronous communication in the communication device 10 is the time from when the transmission data is first transmitted to the retransmission in the counterpart communication device, that is, the counterpart communication device. If the time is longer than the time RP1 required to retransmit the transmission data, the communication device 10 is highly likely to acquire the retransmitted transmission data, and asynchronous communication is particularly feasible.
- the communication processing unit 120 is configured using a DSP
- some or all of the functional units realized in the communication processing unit 120 may be realized by hardware.
- a common part in each communication method is configured by predetermined hardware, and a programmable logic controller (PLC: Programmable Logic Controller) is used for parameter setting, path switching, and operation procedure for the hardware. May be controlled.
- PLC Programmable Logic Controller
- the schedule management unit 140 is configured as an element independent of the communication processing unit 120 and the overall control unit 130.
- the present invention is not limited to this, and the schedule management unit is functional in the overall control unit 130. It may be an embodiment realized in
- the communication device 10 is set so that asynchronous communication can be executed in all the non-execution periods of synchronous communication.
- the present invention is not limited to this, and a part of the non-execution period of synchronous communication
- the communication device 10 may be set so that asynchronous communication can be executed.
- communication of two different communication methods is executed as synchronous communication, but is not limited to this. Specifically, only communication of one communication method (for example, power line communication) may be executed as synchronous communication, or communication of three or more different communication methods may be executed as synchronous communication.
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Abstract
Description
[1.構成概要]
図1は、実施形態に係る通信システム1の構成を示す図である。
次に、通信システム1を構成する通信装置10の機能について説明する。図2は、通信装置10の機能構成を示すブロック図である。
次に、通信装置10の通信動作について説明する。図3は、時系列で示した通信装置10の通信状態を示す図である。図3では、電力線通信の通信タイミングTPと、950MHz通信の通信タイミングTQと、無線LAN通信の通信タイミングTLと、これら電力線通信、950MHz通信および無線LAN通信の各通信タイミングを合わせて表示した通信装置10の通信タイミングTAとが示されている。
以上、この発明の実施の形態について説明したが、この発明は、上記に説明した内容に限定されるものではない。
5 家電
6 センサー
7 中継装置
8 施設
10 通信装置
30 電力線
80 家庭
110 通信部
120 通信処理部
130 全体制御部
140 スケジュール管理部
150 PLCモデム
NT 通信ネットワーク
Claims (5)
- 第1通信方式で通信可能な第1通信手段と、
前記第1通信方式の通信を実現するハードウェアのうち、少なくとも一部のハードウェアを共用のハードウェアとして用いて、前記第1通信方式とは異なる第2通信方式で通信可能な第2通信手段と、
前記第1通信手段および前記第2通信手段のうち、どちらの通信手段を用いるかを選択する選択手段と、
前記選択手段からの指令に応じて、前記共用のハードウェアに対して、前記第1通信方式による通信または前記第2通信方式による通信を実行可能にするための設定を行う設定制御手段と、
を備える通信装置。 - 前記選択手段は、通信プロトコルに従った所定タイミングで前記第1通信手段を選択し、
前記選択手段は、前記所定タイミング以外のタイミングで前記第2通信手段を選択する請求項1に記載の通信装置。 - 前記第1通信方式による通信は、前記通信プロトコルに従って前記所定タイミングで行われる同期通信である請求項2に記載の通信装置。
- 前記通信プロトコルは、スマートグリッドにおける通信の規約を規定するプロトコルに含まれる請求項2または請求項3に記載の通信装置。
- 第1通信方式で通信可能な第1通信手段、および前記第1通信方式の通信を実現するハードウェアのうち、少なくとも一部のハードウェアを共用のハードウェアとして用いて、前記第1通信方式とは異なる第2通信方式で通信可能な第2通信手段を有する通信装置の動作方法であって、
a)前記第1通信手段および前記第2通信手段のうち、どちらの通信手段を用いるかを選択する工程と、
b)前記a)工程における選択に応じて、前記共用のハードウェアに対して、前記第1通信方式による通信または前記第2通信方式による通信を実行可能にするための設定を行う工程と、
を備える通信装置の動作方法。
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KR102173747B1 (ko) * | 2014-05-08 | 2020-11-04 | 텔레콤 이탈리아 소시에떼 퍼 아찌오니 | 무선 통신 네트워크에서 기기 간 통신을 구현하기에 적합한 자원 할당 시스템 및 방법 |
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CN105207694B (zh) * | 2015-08-28 | 2018-02-06 | 重庆邮电大学 | 一种基于IEEE802.15.4g协议标准的433MHz无线通信模块 |
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WO2004052918A2 (en) | 2002-12-09 | 2004-06-24 | The Trustees Of Columbia University In The City Of New York | Peptides and methods for deactivation of organophosphorus-based nerve agents and insecticides |
JP4891268B2 (ja) * | 2008-01-15 | 2012-03-07 | キヤノン株式会社 | 通信装置、制御方法、プログラム、記憶媒体 |
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JP2010504677A (ja) * | 2006-10-03 | 2010-02-12 | ノキア コーポレイション | 無線モデムを管理するためのシステム |
JP2010522448A (ja) * | 2006-12-27 | 2010-07-01 | アルタイル セミコンダクター リミテッド | 多機能無線端末 |
JP2009278417A (ja) * | 2008-05-15 | 2009-11-26 | Mega Chips Corp | 通信システムおよび通信装置 |
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US20130124743A1 (en) | 2013-05-16 |
JP5469555B2 (ja) | 2014-04-16 |
US9282170B2 (en) | 2016-03-08 |
JP2012023596A (ja) | 2012-02-02 |
CN102986293B (zh) | 2015-12-02 |
CN102986293A (zh) | 2013-03-20 |
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