WO2012153463A1 - Wireless unit, method for controlling wireless unit, and communication system - Google Patents

Wireless unit, method for controlling wireless unit, and communication system Download PDF

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Publication number
WO2012153463A1
WO2012153463A1 PCT/JP2012/002614 JP2012002614W WO2012153463A1 WO 2012153463 A1 WO2012153463 A1 WO 2012153463A1 JP 2012002614 W JP2012002614 W JP 2012002614W WO 2012153463 A1 WO2012153463 A1 WO 2012153463A1
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Prior art keywords
power supply
wireless unit
voltage
special
unit
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PCT/JP2012/002614
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French (fr)
Japanese (ja)
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石野　徹
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日本電気株式会社
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Publication of WO2012153463A1 publication Critical patent/WO2012153463A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to a wireless unit, a communication system, and a wireless unit control method, and more particularly to a wireless unit, a communication system, and a wireless unit control method used for a mobile communication terminal.
  • an RRH Remote Radio Head
  • a REC Radio Equipment Control
  • RRH communicate with each other through an optical wiring.
  • RRH since it is possible to arrange the RRH at a location different from the REC, it is possible to reduce signal degradation by arranging the RRH near the antenna, and only the RRH is installed near the antenna. This makes it easier to build the system.
  • Patent Literature 1 a base station main unit having a baseband processing function unit, and a base station main unit connected to the base station main unit via a transmission path, are connected to a mobile station under the control of the baseband processing unit function unit.
  • a wireless base station apparatus including a plurality of wireless units including wireless function units that transmit and receive wireless signals between them is described.
  • the present invention has been made to solve such problems, and an object of the present invention is to provide a wireless unit that can be operated remotely without adding wiring.
  • a radio unit includes a signal processing unit that processes a radio signal received from a portable terminal via an antenna, and a signal processing unit that is wired to an external control device and is based on an instruction from the external control device And a power supply control unit connected to an external power supply device and supplying a power supply voltage to the signal processing unit and the control unit, the power supply control unit according to the power supply voltage supplied from the outside The control unit is controlled to activate the wireless unit in a special mode different from the normal mode in which normal operation is performed.
  • the wireless unit control method includes a signal processing unit that processes a wireless signal received from a mobile terminal via an antenna, and a signal that is connected to an external control device by a wire and is based on an instruction from the external control device.
  • a wireless unit control method comprising a control unit for controlling a processing unit, and a signal processing unit connected to an external power supply device and a power supply control unit for supplying a power supply voltage to the control unit, the power supply voltage supplied from the outside To determine whether the power supply voltage supplied from the outside is a special startup voltage within a predetermined range. If the power supply voltage supplied from the outside is a normal startup voltage that is within a predetermined range different from the special startup voltage, the wireless unit is started in the normal mode under the control of the control unit. It is intended.
  • a communication system includes an antenna, a wireless unit that transmits and receives radio signals to and from the mobile terminal via the antenna, a wired connection to the wireless unit, an external control device that controls the wireless unit, and a wired connection to the wireless unit. And an external power supply for supplying a power supply voltage to the wireless unit.
  • the wireless unit is wired to a signal processing unit that processes a wireless signal and an external control device, and is connected to a control unit that controls the signal processing unit based on an instruction from the external control device and an external power supply device.
  • a power supply control unit that supplies a power supply voltage to the processing unit and the control unit.
  • the power supply control unit controls the control unit according to the power supply voltage supplied from the external power supply device, and performs the normal operation of the wireless unit. It starts in a special mode different from the normal mode.
  • a wireless unit, a wireless unit control method, and a communication system provide a wireless unit, a wireless unit control method, and a communication system that can be operated remotely without adding a new wiring. Can do.
  • the present invention is applied to a communication system having an RRH that communicates with a mobile terminal and a REC that controls the RRH.
  • FIG. 1 is a diagram showing a communication system according to the present embodiment.
  • the communication system 100 according to the present embodiment includes RRH1 as a wireless unit, REC50 as an external control device that controls RRH1, an external power supply 40 that supplies power to RRH1, and a wireless signal between the mobile terminal and the mobile terminal.
  • An antenna 30 that enables transmission and reception is provided.
  • RRH 1 includes a signal processing unit 2, a control unit 3, and a power supply control unit 4.
  • the signal processing unit 2 is connected to an antenna 30 for receiving a radio signal from a mobile terminal or transmitting a radio signal to the mobile terminal, and processes the radio signal received via the antenna 30.
  • the control unit 3 is wired to the REC 50 via an optical wiring, and controls the RRH 1 based on an instruction from the REC 50.
  • the power supply control unit 4 is connected to the external power supply device 40 and supplies a power supply voltage to each processing unit of the RRH 1 such as the signal processing unit 2 and the control unit 3.
  • the external power supply device 40 controls the control unit 3 according to the power supply voltage supplied from the outside, and starts the RRH 1 in a special mode different from the normal mode in which the normal operation is performed. be able to. In this special mode, for example, it is possible to investigate and repair the failure state of RRH1, report the investigation result / repair result, and the like.
  • the control unit 3 starts the RRH 1 in the normal mode.
  • the power supply control unit 4 detects that the power supply voltage supplied from the external power supply device 40 is a special start voltage within a predetermined range different from the normal start voltage, the power supply control unit 4 starts the RRH 1 in the special mode.
  • the RRH 1 does not accept control from the REC 50 through the optical wiring for some reason. In that case, it is usually necessary to collect the RRH 1 from the installation location and investigate the inside.
  • the power supply voltage supplied from the external power supply device 40 is set to a predetermined voltage outside the normal mode operation range at the time of the above failure.
  • the control unit 3 activates the RRH1 in the special mode.
  • the cause of the abnormality of RRH1 is a software failure, it can be repaired by downloading the software from the outside or the like. Therefore, it is not necessary to check the time, so that the time, cost, etc. for collecting the RRH can be suppressed.
  • a method for starting the RRH 1 in the special mode under the control of the power supply control unit 4 will be described later.
  • FIG. 2 is a diagram illustrating a relationship between a power supply voltage and a startup mode in which the RRH 1 is started when the power supply voltage is supplied.
  • RRH1 is ⁇ 48V ⁇ 5V (normal starting voltage)
  • the normal mode is a mode in which the firmware recorded in the ROM or the like built in the control unit 3 is read out and activated in the same manner as the general RRH 1 operation.
  • this special mode is a mode for activating RRH 1 when the control unit 3 is damaged in some way and it becomes difficult to control the REC 50. That is, by setting the power supply voltage of the external power supply device 40 as a special activation voltage, the power supply control unit 4 that has detected the special activation voltage value activates the RRH 1.
  • a special mode such a case of activation is referred to as a special mode.
  • FIG. 2 it has a normal startup voltage that is a voltage that starts in the normal mode, and a special startup voltage that is a voltage that starts the RRH 1 when startup in the normal mode is impossible.
  • a protection voltage band is provided between the normal startup voltage and the special startup voltage, which is a voltage that does not start the RRH 1 in both the normal mode and the special mode. This makes it possible to clearly distinguish between when the normal mode is activated and when the special mode is activated. For example, when the voltage fluctuates due to some impact, the special mode is activated. Malfunction can be suppressed.
  • the RRH 1 starts up in the normal mode when the normal voltage in the range of ⁇ 48V ⁇ 5V ( ⁇ 53V to ⁇ 43V) is supplied.
  • the supplied voltage is -42V to -40V
  • RRH1 does not start up in either the normal mode or the special mode.
  • the supplied voltage is -40V to -38V which is a special voltage
  • the special mode is started.
  • the external power supply apparatus 40 supplies a predetermined voltage, for example, ⁇ 48 V, to the RRH 1 through the power supply wiring.
  • the RRH1 is a range of a certain power supply voltage to cope with variations in the supply voltage of the normal power supply and the power supply wiring, etc., and within the range of ⁇ 48V ⁇ 5V, the RRH1 is designed to operate normally for all functions. Guarantee. However, in practice, it is possible to design such that the operation itself is possible although there are some characteristics degradation such as a decrease in power supply efficiency even outside this range. That is, it can be designed so that it can be normally started and operated as a special mode.
  • RRH1 may be designed not to start outside the guaranteed voltage range for safety and characteristic guarantee. In such a case, for example, the normal startup voltage and the protection are within the guaranteed voltage range. What is necessary is just to set a voltage band and a special starting voltage.
  • the normal startup voltage is ⁇ 48V ⁇ 5V
  • the special startup voltage is ⁇ 40V to ⁇ 36V.
  • the breakdown and deterioration of parts at high voltage If there is no problem of not satisfying the minimum starting voltage in the power supply circuit, the special starting voltage can be set to ⁇ 58V to ⁇ 54V or the like. In that case, the protective voltage band can be provided between the special starting voltage and the normal starting voltage as described above.
  • FIG. 3 is a diagram showing in detail the RRH 1 according to the present embodiment.
  • the signal processing unit 2 includes a digital radio signal processing circuit unit 21 and an analog radio signal processing circuit unit 22.
  • the power supply control unit 4 includes a voltage control circuit unit 10, a main power supply circuit unit (DD converter) 11, and a power supply measurement circuit unit 12.
  • the main power supply circuit unit (DD converter) 11 performs an initial startup process after power-on, and then the digital radio signal processing circuit unit 21 and the analog radio signal processing circuit unit 22 start operating.
  • the voltage measurement circuit 12 first measures the power supply voltage supplied from the external power supply device 40 and outputs the measurement result to the voltage control circuit unit 10 in the initial startup process. Based on the measurement result, the voltage control circuit unit 10 determines whether or not the supplied power supply voltage is a special activation voltage. If the voltage is a special activation voltage, the voltage control circuit unit 10 activates the control unit 3 to activate the special mode. Control.
  • the purpose of the special mode is to detect a failure in an emergency or to recover the RRH1. Therefore, the digital radio signal processing circuit unit 21 and the analog radio signal processing circuit unit 22 are not operated in the special mode. That is, while operating in the special mode, the operation as a normal radio is not performed.
  • FIG. 4 is a diagram showing the control unit 3 and the power supply control unit 4 in more detail.
  • the control unit 3 includes a CPU 111 as an execution control unit, a bus switching IC 112 as a switching unit, and a flash ROM 113 and a flash ROM 114 as first and second storage units.
  • the power supply control unit 4 has a voltage control circuit unit 10, a main power supply circuit unit (DD converter) 11, and a power supply measurement circuit unit 12 as a power supply voltage determination unit.
  • the power supply measurement circuit unit 12 includes a voltage determination circuit 121 as a determination result output circuit and a voltage measurement IC 122 as a measurement unit.
  • the voltage measurement IC 122 measures the power supply voltage supplied from the external power supply device 40.
  • the voltage determination circuit 121 determines whether or not the power supply voltage supplied from the external power supply device 40 is a special activation voltage based on the measurement result of the voltage measurement IC 122, and outputs the determination result to the control unit 3.
  • the flash ROM 113 stores a normal program read by the CPU 111 in the normal mode.
  • the flash ROM 114 stores a special program read by the execution control unit in the special mode.
  • the bus switching IC 112 switches the connection between the CPU 111 and the flash ROM 113 and the flash ROM 114 according to the determination result received from the voltage determination circuit 121.
  • the CPU 111 reads a program from either the flash ROM 113 or the flash ROM 114 connected by the bus switching IC 112 and executes a startup operation in the normal mode or the special mode.
  • the voltage measurement IC 122 mounted on the power supply control unit 4 measures the power supply voltage, and outputs an analog voltage signal, that is, a signal proportional to the power supply voltage, to the voltage determination circuit 121.
  • the voltage determination circuit 121 determines whether or not the power supply voltage received from the voltage measurement IC 122 is a voltage that should be activated in the special mode, and outputs the result to the bus switching IC 112.
  • the result output from the voltage determination circuit 121 is High, it is activated in the normal mode, and when it is Low, it is activated in the special mode.
  • the bus switching IC 112 switches the flash ROM connected to the CPU to the flash ROM 113 if the signal from the voltage determination circuit 121 is high, and to the flash ROM 114 if the signal is low.
  • a normal FW (Firmware) is stored in the flash ROM 113 and a special mode FW is stored in the flash ROM 114.
  • the flash ROM itself to be read is switched by hardware, so that the mode can be switched between the normal mode and the special mode by controlling only the power supply voltage without using software.
  • the normal startup process of the RRH starts with the operation of the CPU reading the FW in the flash ROM first, and the destination is controlled by software.
  • the flash ROM itself to be read is switched. It is possible to start in the special mode regardless of the control.
  • FW will be described.
  • FW has a function of diagnosing its normality.
  • the checksum of the entire FW is confirmed at the beginning of the activation process, and if the checksums do not match, activation is performed with the Safe mode FW, which is one of modes different from the normal mode.
  • the FW check function does not operate as described above, it is not possible to start in the Safe mode, and normality diagnosis cannot be performed. For example, if the FW itself is not damaged even in the software activation process of the FW, since the determination is performed by software, the first activation cannot be performed and the abnormality cannot be detected.
  • the difference between the power supply voltages is used as a trigger, and the determination is performed by hardware in the power supply control unit 4, so that no matter how the FW main body is damaged, It becomes possible to shift to the mode.
  • the special mode As described above, the purpose of the special mode is to detect a failure in an emergency or to restore the RRH 1, and in the above example, the Safe mode with limited functions is activated as the special mode.
  • the special mode is not limited to the above example, and the purpose of the special mode is not limited to failure detection or recovery.
  • the information on the investigation result of the failure state of the RRH 1 may be automatically transmitted to the outside through the optical wiring even if there is no request from the outside. As a result, it is possible to detect that the RRH 1 is out of order, and it is possible to more accurately determine whether or not the RRH 1 is actually collected and repaired.
  • the RRH1 normal mode FW may be sent via the optical wiring and the REC 50 to diagnose the presence or absence of breakage or the breakage status.
  • the FW restored to a normal state may be sent again to the RRH 1 via the optical wiring and overwritten on the flash ROM 113.
  • some of the above operations may be performed in the same special mode, or different special modes may be provided according to the power supply voltage, and may be performed in different special modes.
  • a mode for prohibiting the radio signal output operation of the signal processing unit 2 can be provided.
  • RRH1 appears to be operating normally from REC 50, but in reality, the output to the antenna is completely cut off.
  • This mode can be used as a function check for RRH 1 during a test run before normal operation. Further, by completely stopping the wave, it is possible to reduce the possibility of emitting illegal radio waves due to the RRH being damaged.
  • the RRH 1 may have a plurality of special modes depending on the magnitude of the power supply voltage.
  • FIG. 5 is a diagram illustrating an example of the RRH 1 having a plurality of special modes.
  • the special start mode 1 for maintenance when it is -40V to -38V, it starts in the special start mode 1 for maintenance, and when it is -38V to -36V, the special start mode 2 for maintenance is used. Start with. In such a case, for example, in the maintenance special activation mode 1, the activation is simply performed in the Safe mode.
  • the special start mode 2 for maintenance a mode in which specific information inside the RRH, for example, a failure log is continuously transmitted via an optical wiring without a command from the outside. As a result, it becomes possible to more easily detect a failure and restore the RRH 1.
  • the present invention has been described as a hardware configuration, but the present invention is not limited to this.
  • the present invention can also realize arbitrary processing by causing a CPU (Central Processing Unit) to execute a computer program.
  • the above-described program can be stored using various types of non-transitory computer readable media and supplied to a computer.
  • Non-transitory computer readable media include various types of tangible storage media.
  • non-transitory computer-readable media examples include magnetic recording media (eg, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg, magneto-optical disks), CD-ROM (Read Only Memory) CD-R, CD -R / W, including semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (Random Access Memory)).
  • the program may be supplied to the computer by various types of temporary computer readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves.
  • the temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.
  • (Appendix 1) Signal processing means for processing a radio signal received from the mobile terminal via the antenna; Control means connected to an external control device by wire and controlling the signal processing means based on an instruction from the external control device; Power supply control means connected to an external power supply device and supplying a power supply voltage to the signal processing means and control means;
  • the power supply control unit is a wireless unit that controls the control unit in accordance with a power supply voltage supplied from the outside and starts the wireless unit in a special mode different from a normal mode in which a normal operation is performed.
  • the power supply control means has power supply voltage determination means for determining whether the power supply voltage supplied from the outside is one of the normal start voltage, the special start voltage, or the protection voltage, The wireless unit according to claim 2 or 3, wherein when the power supply voltage determination unit detects that the power supply voltage supplied from the outside is the special activation voltage, the control unit activates the wireless unit in the special mode.
  • the power supply voltage determination means includes Measuring means for measuring the power supply voltage supplied from the outside; A determination result output circuit for outputting to the control means a determination result indicating whether or not a power supply voltage supplied from the outside is the special starting voltage based on the result of the measuring means;
  • the control means includes Execution control means for executing a program; First storage means in which a normal program read by the execution control means in the normal mode is recorded; Second storage means in which a special program read by the execution control means in the special mode is recorded; According to the determination result, the execution control means, and a switching means for switching the connection between the first and second storage means, If the determination result is the special activation voltage, the execution control means reads the special program from the second storage means, activates the wireless unit in the special mode, If the determination result is not the special startup voltage, the execution control unit reads the normal program from the first storage unit, and starts the wireless unit in the normal mode.
  • the wireless unit described. (Appendix 6) The wireless unit according to any one of claims 1 to 5, wherein the special mode is a mode in which only a part of all functions of the control unit is used. (Appendix 7) The wireless unit according to any one of appendices 1 to 6, wherein the special mode prohibits the operation of the signal processing means. (Appendix 8) In the special mode, the control unit investigates the failure state of the wireless unit and automatically transmits the failure state investigation result to the external control device via the wired connection. The wireless unit according to claim 1. (Appendix 9) The wireless unit according to any one of appendices 1 to 7, having a plurality of different special modes according to the power supply voltage.
  • a wireless unit control method comprising: a power supply control means for supplying a power supply voltage to the signal processing means and the control means connected to the power supply apparatus of Measure the power supply voltage supplied from the outside, Determining whether the externally supplied power supply voltage is a special starting voltage within a predetermined range; In the case of the special starting voltage, the wireless unit is started in a special mode under the control of the power control means, When the power supply voltage supplied from the outside is a normal startup voltage within a predetermined range different from the special startup voltage, the wireless unit control method for starting the wireless unit in the normal mode by the control of the control means .
  • An antenna A wireless unit that transmits and receives wireless signals to and from the mobile terminal via the antenna;
  • An external control device that is wired with the wireless unit and controls the wireless unit;
  • An external power supply that is wired to the wireless unit and supplies a power supply voltage to the wireless unit;
  • the wireless unit is Signal processing means for processing the radio signal;
  • Control means connected to the external control device by wire and controlling the signal processing means based on an instruction from the external control device;
  • Power supply control means connected to the external power supply device and supplying a power supply voltage to the signal processing means and control means;
  • the power supply control means controls the control means in accordance with a power supply voltage supplied from the external power supply device, and activates the wireless unit in a special mode different from the normal mode for normal operation.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

Provided is a wireless unit, which can be remote-controlled without having a wiring line added thereto. This wireless unit (1) has: a signal processing unit (2), which processes wireless signals received from a portable terminal via an antenna (30); a control unit (3), which is connected to an external control apparatus (50) with a wire, and controls the signal processing unit (2) on the basis of instructions from the external control apparatus (50); and a power supply control unit (4), which is connected to an external power supply apparatus (40), and supplies a power supply voltage to the signal processing unit (2) and the control unit (3). The power supply control unit (4) controls the control unit (3) corresponding to a power supply voltage supplied from the outside, and starts up the wireless unit (1) in a special mode different from a normal mode in which normal operations are performed.

Description

無線ユニット、無線ユニットの制御方法及び通信システムWireless unit, wireless unit control method and communication system
　本発明は無線ユニット、通信システム及び無線ユニットの制御方法に関し、特に移動体通信端末に利用される無線ユニット、通信システム及び無線ユニットの制御方法に関する。 The present invention relates to a wireless unit, a communication system, and a wireless unit control method, and more particularly to a wireless unit, a communication system, and a wireless unit control method used for a mobile communication terminal.
　近年、無線基地局システムにおいて、携帯端末と通信する無線装置であるＲＲＨ（Remote Radio Head）と、当該無線部を制御する制御装置であるＲＥＣ（Radio Equipment Control）とを異なる場所に設置し、ＲＥＣとＲＲＨとが光配線により通信するシステムがある。このようなシステムにおいては、ＲＲＨをＲＥＣと異なる場所に配置することが可能であるため、ＲＲＨをアンテナの近くに配置することにより、信号の劣化が少なくでき、また、ＲＲＨのみをアンテナ近くに設置することにより、システムの構築がより容易である。 In recent years, in a radio base station system, an RRH (Remote Radio Head) that is a radio device that communicates with a mobile terminal and a REC (Radio Equipment Control) that is a control device that controls the radio unit are installed at different locations. And RRH communicate with each other through an optical wiring. In such a system, since it is possible to arrange the RRH at a location different from the REC, it is possible to reduce signal degradation by arranging the RRH near the antenna, and only the RRH is installed near the antenna. This makes it easier to build the system.
　特許文献１には、ベースバンド処理機能部を有する基地局本体ユニットと、この基地局本体ユニットに対し伝送路を介して接続され、上記ベースバンド処理部機能部の制御の下で移動局との間で無線信号の送受信を行う無線機能部を備える複数の無線ユニットを備える無線基地局装置が記載されている。 In Patent Literature 1, a base station main unit having a baseband processing function unit, and a base station main unit connected to the base station main unit via a transmission path, are connected to a mobile station under the control of the baseband processing unit function unit. A wireless base station apparatus including a plurality of wireless units including wireless function units that transmit and receive wireless signals between them is described.
特開２００６－９４４４６号公報JP 2006-94446 A
　しかしながら、一般に、特許文献１に記載されたような基地局システムにおいて、ＲＲＨは事業者の都合により鉄塔上など様々な場所に設置され、直接本体にアクセスすることは難しい。当然光配線を通じた正規の操作は可能であるが、何らかの原因（ソフトエラーなど）でファームウェアが破損して光配線を通じた操作ができなくなった場合、ファイルの書き換えを行うだけで復旧可能な場合であっても、大がかりな回収作業が必要となり、回収のための時間・費用などが問題となる。すなわち、ＲＲＨの点検・整備等は困難であるが、何らかの理由により、ＲＲＨが配線を介したＲＥＣからの制御を受け付けない場合には、必ずＲＲＨを設置場所から回収し、内部を調査しなければならないという問題があった。 However, in general, in the base station system as described in Patent Document 1, it is difficult to access the main body directly because the RRH is installed in various places such as on a steel tower for the convenience of the operator. Naturally, regular operation through optical wiring is possible, but if the firmware is damaged due to some reason (soft error, etc.) and operation through optical wiring becomes impossible, it can be recovered by simply rewriting the file. Even in such a case, a large amount of collection work is required, and the time and cost for collection become a problem. In other words, it is difficult to inspect and maintain RRH, but if RRH does not accept control from REC via wiring for some reason, RRH must be collected from the installation location and the inside must be investigated. There was a problem of not becoming.
　本発明はこのような問題を解決するためになされたものであり、配線を追加することなく遠隔で操作することができる無線ユニットを提供することを目的とする。 The present invention has been made to solve such problems, and an object of the present invention is to provide a wireless unit that can be operated remotely without adding wiring.
　本発明にかかる無線ユニットは、アンテナを介して携帯端末から受信した無線信号を処理する信号処理部と、外部の制御装置に有線接続され、当該外部の制御装置からの指示に基づいて信号処理部を制御する制御部と、外部の電源装置に接続され、信号処理部及び制御部に電源電圧を供給する電源制御部とを有し、電源制御部は、外部から供給される電源電圧に応じて制御部を制御し、無線ユニットを、通常の動作をする通常モードとは異なる特殊モードで起動するものである。 A radio unit according to the present invention includes a signal processing unit that processes a radio signal received from a portable terminal via an antenna, and a signal processing unit that is wired to an external control device and is based on an instruction from the external control device And a power supply control unit connected to an external power supply device and supplying a power supply voltage to the signal processing unit and the control unit, the power supply control unit according to the power supply voltage supplied from the outside The control unit is controlled to activate the wireless unit in a special mode different from the normal mode in which normal operation is performed.
　本発明にかかる無線ユニットの制御方法は、アンテナを介して携帯端末から受信した無線信号を処理する信号処理部と、外部の制御装置に有線接続され当該外部の制御装置からの指示に基づいて信号処理部を制御する制御部と、外部の電源装置に接続され信号処理部及び制御部に電源電圧を供給する電源制御部とを有する無線ユニットの制御方法であって、外部から供給される電源電圧を測定し、外部から供給される電源電圧が、所定の範囲内である特殊起動電圧であるか否かを判定し、特殊起動電圧である場合は、電源制御部の制御により無線ユニットを特殊モードで起動し、外部から供給される電源電圧が特殊起動電圧とは異なる所定の範囲内である通常起動電圧である場合は、制御部の制御により無線ユニットを通常モードで起動するものである。 The wireless unit control method according to the present invention includes a signal processing unit that processes a wireless signal received from a mobile terminal via an antenna, and a signal that is connected to an external control device by a wire and is based on an instruction from the external control device. A wireless unit control method comprising a control unit for controlling a processing unit, and a signal processing unit connected to an external power supply device and a power supply control unit for supplying a power supply voltage to the control unit, the power supply voltage supplied from the outside To determine whether the power supply voltage supplied from the outside is a special startup voltage within a predetermined range. If the power supply voltage supplied from the outside is a normal startup voltage that is within a predetermined range different from the special startup voltage, the wireless unit is started in the normal mode under the control of the control unit. It is intended.
　本発明にかかる通信システムは、アンテナと、アンテナを介して携帯端末と無線信号を送受信する無線ユニットと、無線ユニットと有線配線され、無線ユニットを制御する外部制御装置と、無線ユニットと有線接続され、無線ユニットに電源電圧を供給する外部電源装置とを備える。無線ユニットは、無線信号を処理する信号処理部と、外部制御装置に有線接続され、当該外部制御装置からの指示に基づいて信号処理部を制御する制御部と、外部電源装置に接続され、信号処理部及び制御部に電源電圧を供給する電源制御部とを有し、電源制御部は、外部電源装置から供給される電源電圧に応じて制御部を制御し、無線ユニットを、通常の動作をする通常モードとは異なる特殊モードで起動するものである。 A communication system according to the present invention includes an antenna, a wireless unit that transmits and receives radio signals to and from the mobile terminal via the antenna, a wired connection to the wireless unit, an external control device that controls the wireless unit, and a wired connection to the wireless unit. And an external power supply for supplying a power supply voltage to the wireless unit. The wireless unit is wired to a signal processing unit that processes a wireless signal and an external control device, and is connected to a control unit that controls the signal processing unit based on an instruction from the external control device and an external power supply device. A power supply control unit that supplies a power supply voltage to the processing unit and the control unit. The power supply control unit controls the control unit according to the power supply voltage supplied from the external power supply device, and performs the normal operation of the wireless unit. It starts in a special mode different from the normal mode.
　本実施の形態にかかる無線ユニット、無線ユニットの制御方法及び通信システムは、新たに配線を追加することなく、遠隔で操作することができる無線ユニット、無線ユニットの制御方法及び通信システムを提供することができる。 A wireless unit, a wireless unit control method, and a communication system according to the present embodiment provide a wireless unit, a wireless unit control method, and a communication system that can be operated remotely without adding a new wiring. Can do.
実施の形態にかかる通信システムを示す図である。It is a figure which shows the communication system concerning embodiment. 実施の形態にかかる電源電圧と、当該電源電圧が供給された場合に、ＲＲＨ１が起動する起動モードの関係を示す図である。It is a figure which shows the relationship between the power supply voltage concerning embodiment, and the starting mode in which RRH1 starts when the said power supply voltage is supplied. 実施の形態にかかる本実施の形態にかかるＲＲＨ１を詳細に示す図である。It is a figure which shows RRH1 concerning this Embodiment concerning embodiment in detail. 実施の形態にかかる制御部３及び電源制御部４について更に詳細に示す図である。It is a figure shown in more detail about the control part 3 and power supply control part 4 concerning embodiment. 実施の形態にかかる複数の特殊モードを有するＲＲＨ１の例を示す図である。It is a figure which shows the example of RRH1 which has several special modes concerning embodiment.
　以下、図面を参照して本発明の実施の形態について説明する。この実施の形態は、本発明を、携帯端末と通信するＲＲＨと、このＲＲＨを制御するＲＥＣとを有する通信システムに適用したものである。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, the present invention is applied to a communication system having an RRH that communicates with a mobile terminal and a REC that controls the RRH.
　図１は、本実施の形態にかかる通信システムを示す図である。本実施の形態にかかる通信システム１００は、無線ユニットとしてのＲＲＨ１、ＲＲＨ１を制御する外部の制御装置としてのＲＥＣ５０、ＲＲＨ１に電源を供給する外部電源装置４０、及び携帯端末との間の無線信号の送受信を可能とするアンテナ３０を有している。 FIG. 1 is a diagram showing a communication system according to the present embodiment. The communication system 100 according to the present embodiment includes RRH1 as a wireless unit, REC50 as an external control device that controls RRH1, an external power supply 40 that supplies power to RRH1, and a wireless signal between the mobile terminal and the mobile terminal. An antenna 30 that enables transmission and reception is provided.
　ＲＲＨ１は、信号処理部２、制御部３及び電源制御部４を有する。信号処理部２は、携帯端末からの無線信号を受信し、又は携帯端末へ無線信号を送信するためのアンテナ３０に接続され、アンテナ３０を介して受信した無線信号を処理する。 RRH 1 includes a signal processing unit 2, a control unit 3, and a power supply control unit 4. The signal processing unit 2 is connected to an antenna 30 for receiving a radio signal from a mobile terminal or transmitting a radio signal to the mobile terminal, and processes the radio signal received via the antenna 30.
　制御部３は、ＲＥＣ５０に光配線を介して有線接続され、ＲＥＣ５０からの指示に基づいてＲＲＨ１を制御する。 The control unit 3 is wired to the REC 50 via an optical wiring, and controls the RRH 1 based on an instruction from the REC 50.
　電源制御部４は、外部電源装置４０に接続され、信号処理部２及び制御部３などＲＲＨ１の各処理部に電源電圧を供給する。ここで、本実施の形態にかかる外部電源装置４０は、外部から供給される電源電圧に応じて制御部３を制御し、ＲＲＨ１を、通常の動作をする通常モードとは異なる特殊モードで起動することができる。この特殊モードでは、例えば、ＲＲＨ１の障害状態の調査、修復、及び調査結果・修復結果の報告等を行うことができる。 The power supply control unit 4 is connected to the external power supply device 40 and supplies a power supply voltage to each processing unit of the RRH 1 such as the signal processing unit 2 and the control unit 3. Here, the external power supply device 40 according to the present embodiment controls the control unit 3 according to the power supply voltage supplied from the outside, and starts the RRH 1 in a special mode different from the normal mode in which the normal operation is performed. be able to. In this special mode, for example, it is possible to investigate and repair the failure state of RRH1, report the investigation result / repair result, and the like.
　すなわち、外部電源装置４０から供給される電源電圧が所定の電圧範囲内である通常起動電圧である場合は、制御部３がＲＲＨ１を通常モードで起動する。一方、電源制御部４は、外部電源装置４０から供給される電源電圧が通常起動電圧とは異なる所定の範囲内である特殊起動電圧であることを検出すると、ＲＲＨ１を特殊モードで起動させる。 That is, when the power supply voltage supplied from the external power supply device 40 is a normal startup voltage within a predetermined voltage range, the control unit 3 starts the RRH 1 in the normal mode. On the other hand, when the power supply control unit 4 detects that the power supply voltage supplied from the external power supply device 40 is a special start voltage within a predetermined range different from the normal start voltage, the power supply control unit 4 starts the RRH 1 in the special mode.
　通信システム１００においては、何らかの原因によりＲＲＨ１がＲＥＣ５０から光配線を通じた制御を受け付けない場合が生じ得る。その場合には、通常であればＲＲＨ１を設置場所から回収し、内部を調査する必要が生じる。 In the communication system 100, there may occur a case where the RRH 1 does not accept control from the REC 50 through the optical wiring for some reason. In that case, it is usually necessary to collect the RRH 1 from the installation location and investigate the inside.
　これに対し、本実施の形態にかかるＲＲＨ１においては、上記のような障害時において、外部電源装置４０から供給する電源電圧を、通常モード動作範囲外の所定の電圧とする。ＲＲＨ１を電源制御部４は、これを検出すると、制御部３によりＲＲＨ１を特殊モードで起動させる。これにより、例えばＲＲＨ１の異常の原因がソフトウェアの故障であった場合、外部から新たに当該ソフトウェアをダウンロードする等して修復することができるため、従来のように、わざわざＲＲＨ１を回収し、直接ＲＲＨ１を点検する等しなくてもよく、そのため、ＲＲＨの回収のための時間、費用等を抑制することができる。電源制御部４の制御の下、ＲＲＨ１を特殊モードで起動する方法については後述する。 On the other hand, in the RRH 1 according to the present embodiment, the power supply voltage supplied from the external power supply device 40 is set to a predetermined voltage outside the normal mode operation range at the time of the above failure. When the power supply control unit 4 detects the RRH1, the control unit 3 activates the RRH1 in the special mode. As a result, for example, when the cause of the abnormality of RRH1 is a software failure, it can be repaired by downloading the software from the outside or the like. Therefore, it is not necessary to check the time, so that the time, cost, etc. for collecting the RRH can be suppressed. A method for starting the RRH 1 in the special mode under the control of the power supply control unit 4 will be described later.
　次に、本実施の形態にかかるＲＲＨ１の特殊モードについて更に説明する。図２は、電源電圧と、当該電源電圧が供給された場合に、ＲＲＨ１が起動する起動モードの関係を示す図である。ここでは、ＲＲＨ１は、－４８Ｖ±５Ｖ（通常起動電圧）の場合、通常動作をするものとし、これを通常モードということする。通常モードとは、一般的なＲＲＨ１の動作と同様で、制御部３が内蔵するＲＯＭ等に記録されたファームウェアを読み出し起動するモードである。 Next, the RRH1 special mode according to this embodiment will be further described. FIG. 2 is a diagram illustrating a relationship between a power supply voltage and a startup mode in which the RRH 1 is started when the power supply voltage is supplied. Here, when RRH1 is −48V ± 5V (normal starting voltage), it is assumed that the normal operation is performed, and this is referred to as a normal mode. The normal mode is a mode in which the firmware recorded in the ROM or the like built in the control unit 3 is read out and activated in the same manner as the general RRH 1 operation.
　一方、－４０Ｖ～－３８Ｖ（特殊起動電圧）で起動する場合を特殊モードという。この特殊モードでは、上述したように、電源制御部４の制御のもと、ＲＲＨ１を起動させるモードである。この特殊モードは、本実施の形態においては、制御部３が何らかのダメージを受け、ＲＥＣ５０の制御が困難になった場合にＲＲＨ１を起動させるためのモードである。すなわち、外部電源装置４０の電源電圧を特殊起動電圧とすることで、この特殊起動電圧値を検知した電源制御部４がＲＲＨ１を起動させる。以下、このように起動された場合を特殊モードという。 On the other hand, the case of starting from -40V to -38V (special start-up voltage) is called special mode. In this special mode, as described above, the RRH 1 is activated under the control of the power supply control unit 4. In the present embodiment, this special mode is a mode for activating RRH 1 when the control unit 3 is damaged in some way and it becomes difficult to control the REC 50. That is, by setting the power supply voltage of the external power supply device 40 as a special activation voltage, the power supply control unit 4 that has detected the special activation voltage value activates the RRH 1. Hereinafter, such a case of activation is referred to as a special mode.
　図２に示すように、通常モードで起動する電圧である通常起動電圧と、通常モードでの起動が不可能な場合にＲＲＨ１を起動させる電圧である特殊起動電圧とを有する。ここで、本実施の形態にかかる通信システム１００の特長の１つとして以下の点が挙げられる。すなわち、本実施の形態においては、通常起動電圧と特殊起動電圧との間に、通常モード及び特殊モードのいずれにおいてもＲＲＨ１が起動することがない電圧である保護電圧帯が設けられている。これにより、通常モードが起動する場合と、特殊モードが起動する場合とを明確に区別することができ、例えば、なんらかの衝撃を受けて電圧が変動した場合に特殊モードで起動してしまうというような誤作動を抑制することができる。 As shown in FIG. 2, it has a normal startup voltage that is a voltage that starts in the normal mode, and a special startup voltage that is a voltage that starts the RRH 1 when startup in the normal mode is impossible. Here, the following points are mentioned as one of the features of the communication system 100 according to the present embodiment. That is, in the present embodiment, a protection voltage band is provided between the normal startup voltage and the special startup voltage, which is a voltage that does not start the RRH 1 in both the normal mode and the special mode. This makes it possible to clearly distinguish between when the normal mode is activated and when the special mode is activated. For example, when the voltage fluctuates due to some impact, the special mode is activated. Malfunction can be suppressed.
　本実施の形態にかかるＲＲＨ１は、上述のように、－４８Ｖ±５Ｖ（－５３Ｖ～－４３Ｖ）の範囲の通常電圧が供給された場合、通常モードで起動する。供給された電圧が－４２Ｖ～－４０Ｖであった場合、ＲＲＨ１は通常モード及び特殊モードのいずれでも起動しない。供給された電圧が、特殊電圧である－４０Ｖ～－３８Ｖであった場合、特殊モードで起動する。 As described above, the RRH 1 according to the present embodiment starts up in the normal mode when the normal voltage in the range of −48V ± 5V (−53V to −43V) is supplied. When the supplied voltage is -42V to -40V, RRH1 does not start up in either the normal mode or the special mode. When the supplied voltage is -40V to -38V which is a special voltage, the special mode is started.
　ここで、一般に外部電源装置４０は、所定の電圧、例えば－４８Ｖを、電源配線を通じてＲＲＨ１に供給する。ＲＲＨ１は、通常電源の供給電圧や電源配線のばらつきなどに対応するためにある程度の電源電圧の範囲である、－４８Ｖ±５Ｖの範囲中であれば全機能について正常に動作するようにユーザーに対して保証する。しかし、実際にはこの範囲外でも電源効率の低下などいくつかの特性の劣化はあるものの、動作そのものは可能であるように設計することも可能である。すなわち、特殊モードとして正常に起動及び動作することが可能であるように設計することが可能である。 Here, generally, the external power supply apparatus 40 supplies a predetermined voltage, for example, −48 V, to the RRH 1 through the power supply wiring. The RRH1 is a range of a certain power supply voltage to cope with variations in the supply voltage of the normal power supply and the power supply wiring, etc., and within the range of −48V ± 5V, the RRH1 is designed to operate normally for all functions. Guarantee. However, in practice, it is possible to design such that the operation itself is possible although there are some characteristics degradation such as a decrease in power supply efficiency even outside this range. That is, it can be designed so that it can be normally started and operated as a special mode.
　また、ＲＲＨ１について、安全及び特性保障のため、保障電圧範囲外では起動しないように設計されている場合もあるが、このような場合には、例えば、保障電圧範囲内に、通常起動電圧、保護電圧帯、及び特殊起動電圧を設定する等すればよい。 In addition, RRH1 may be designed not to start outside the guaranteed voltage range for safety and characteristic guarantee. In such a case, for example, the normal startup voltage and the protection are within the guaranteed voltage range. What is necessary is just to set a voltage band and a special starting voltage.
　さらに、本実施の形態においては、通常起動電圧が－４８Ｖ±５Ｖであるのに対し、特殊起動電圧を－４０Ｖ～－３６Ｖとしているが、高電圧での部品の破壊及び劣化、低電圧での電源回路内部の最低起動電圧を満たさない等の問題がなければ、特殊起動電圧を－５８Ｖ～－５４Ｖ等とすることができる。その場合は、保護電圧帯を上記と同様に、特殊起動電圧と通常起動電圧との間に設けることができる。 Furthermore, in this embodiment, the normal startup voltage is −48V ± 5V, while the special startup voltage is −40V to −36V. However, the breakdown and deterioration of parts at high voltage, If there is no problem of not satisfying the minimum starting voltage in the power supply circuit, the special starting voltage can be set to −58V to −54V or the like. In that case, the protective voltage band can be provided between the special starting voltage and the normal starting voltage as described above.
　次に、本実施の形態にかかるＲＲＨ１について、更に詳細に説明する。図３は、本実施の形態にかかるＲＲＨ１を詳細に示す図である。信号処理部２は、デジタル無線信号処理回路部２１及びアナログ無線信号処理回路部２２を有する。電源制御部４は、電圧制御回路部１０と、主要電源回路部（ＤＤコンバータ）１１と、電源測定回路部１２とを有する。 Next, the RRH 1 according to the present embodiment will be described in more detail. FIG. 3 is a diagram showing in detail the RRH 1 according to the present embodiment. The signal processing unit 2 includes a digital radio signal processing circuit unit 21 and an analog radio signal processing circuit unit 22. The power supply control unit 4 includes a voltage control circuit unit 10, a main power supply circuit unit (DD converter) 11, and a power supply measurement circuit unit 12.
　ＲＲＨは一般に、主要電源回路部（ＤＤコンバータ）１１は、電源投入後に初期起動処理を行った後、デジタル無線信号処理回路部２１及びアナログ無線信号処理回路部２２が動作を開始する。 In general, in the RRH, the main power supply circuit unit (DD converter) 11 performs an initial startup process after power-on, and then the digital radio signal processing circuit unit 21 and the analog radio signal processing circuit unit 22 start operating.
　これに対し、本実施の形態にかかるＲＲＨ１は、初期起動処理でまず、電圧測定回路１２が外部電源装置４０から供給される電源電圧を測定し、測定結果を電圧制御回路部１０に出力する。電圧制御回路部１０は、この測定結果に基づき、供給された電源電圧が、特殊起動電圧であるか否かを判定し、特殊起動電圧である場合には特殊モードを起動するべく制御部３を制御する。 On the other hand, in the RRH 1 according to the present embodiment, the voltage measurement circuit 12 first measures the power supply voltage supplied from the external power supply device 40 and outputs the measurement result to the voltage control circuit unit 10 in the initial startup process. Based on the measurement result, the voltage control circuit unit 10 determines whether or not the supplied power supply voltage is a special activation voltage. If the voltage is a special activation voltage, the voltage control circuit unit 10 activates the control unit 3 to activate the special mode. Control.
　ここで、本実施の形態においては、特殊モードの目的は、緊急時の障害検出、又はＲＲＨ１の復旧などとしている。よって、デジタル無線信号処理回路部２１及びアナログ無線信号処理回路部２２は、特殊モードでは動作させないこととする。すなわち、特殊モードで動作している間、通常の無線機としての動作は行わない。 Here, in the present embodiment, the purpose of the special mode is to detect a failure in an emergency or to recover the RRH1. Therefore, the digital radio signal processing circuit unit 21 and the analog radio signal processing circuit unit 22 are not operated in the special mode. That is, while operating in the special mode, the operation as a normal radio is not performed.
　次に、特殊モードの起動方法について、更に詳細に説明する。図４は、制御部３及び電源制御部４について更に詳細に示す図である。 Next, the method for starting the special mode will be described in more detail. FIG. 4 is a diagram showing the control unit 3 and the power supply control unit 4 in more detail.
　制御部３は、実行制御部としてのＣＰＵ１１１と、切替部としてのバス切替ＩＣ１１２と、第１及び第２の記憶部としてのＦｌａｓｈ　ＲＯＭ１１３及びＦｌａｓｈ　ＲＯＭ１１４を有する。 The control unit 3 includes a CPU 111 as an execution control unit, a bus switching IC 112 as a switching unit, and a flash ROM 113 and a flash ROM 114 as first and second storage units.
　電源制御部４は、電圧制御回路部１０と、主要電源回路部（ＤＤコンバータ）１１と、電源電圧判定部としての電源測定回路部１２とを有する。電源測定回路部１２は、判定結果出力回路としての電圧判定回路１２１と、測定部としての電圧測定ＩＣ１２２とを有する。 The power supply control unit 4 has a voltage control circuit unit 10, a main power supply circuit unit (DD converter) 11, and a power supply measurement circuit unit 12 as a power supply voltage determination unit. The power supply measurement circuit unit 12 includes a voltage determination circuit 121 as a determination result output circuit and a voltage measurement IC 122 as a measurement unit.
　電圧測定ＩＣ１２２は、外部電源装置４０から供給される電源電圧を測定する。 The voltage measurement IC 122 measures the power supply voltage supplied from the external power supply device 40.
　電圧判定回路１２１は、電圧測定ＩＣ１２２の測定結果に基づいて、外部電源装置４０から供給される電源電圧が特殊起動電圧であるか否かを判定し、この判定結果を制御部３に出力する。 The voltage determination circuit 121 determines whether or not the power supply voltage supplied from the external power supply device 40 is a special activation voltage based on the measurement result of the voltage measurement IC 122, and outputs the determination result to the control unit 3.
　Ｆｌａｓｈ　ＲＯＭ１１３には、通常モードの際にＣＰＵ１１１が読み出す通常プログラムが記録されている。Ｆｌａｓｈ　ＲＯＭ１１４には、特殊モードの際に前記実行制御部が読み出す特殊プログラムが記録されている。 The flash ROM 113 stores a normal program read by the CPU 111 in the normal mode. The flash ROM 114 stores a special program read by the execution control unit in the special mode.
　バス切替ＩＣ１１２は、電圧判定回路１２１から受け取った判定結果に応じて、ＣＰＵ１１１と、Ｆｌａｓｈ　ＲＯＭ１１３及びＦｌａｓｈ　ＲＯＭ１１４との接続を切り替える。 The bus switching IC 112 switches the connection between the CPU 111 and the flash ROM 113 and the flash ROM 114 according to the determination result received from the voltage determination circuit 121.
　ＣＰＵ１１１は、バス切替ＩＣ１１２により接続されたＦｌａｓｈ　ＲＯＭ１１３又はＦｌａｓｈ　ＲＯＭ１１４のいずれかから、プログラムを読み込んで、通常モード又は特殊モードでの起動動作を実行する。 The CPU 111 reads a program from either the flash ROM 113 or the flash ROM 114 connected by the bus switching IC 112 and executes a startup operation in the normal mode or the special mode.
　次に、本実施の形態にかかるＲＲＨ１の動作について、詳しく説明する。まず、電源制御部４に実装された電圧測定ＩＣ１２２が電源電圧を測定し、アナログ電圧信号、すなわち電源電圧に比例する信号を電圧判定回路１２１に出力する。 Next, the operation of the RRH 1 according to the present embodiment will be described in detail. First, the voltage measurement IC 122 mounted on the power supply control unit 4 measures the power supply voltage, and outputs an analog voltage signal, that is, a signal proportional to the power supply voltage, to the voltage determination circuit 121.
　電圧判定回路１２１は、電圧測定ＩＣ１２２から受け取った電源電圧が、特殊モードで起動すべき電圧であるか否かを判定し、その結果をバス切替ＩＣ１１２に出力する。ここでは例えば電圧判定回路１２１が出力した結果がＨｉｇｈである場合、通常モードで起動することにし、Ｌｏｗである場合には特殊モードで起動するものとする。 The voltage determination circuit 121 determines whether or not the power supply voltage received from the voltage measurement IC 122 is a voltage that should be activated in the special mode, and outputs the result to the bus switching IC 112. Here, for example, when the result output from the voltage determination circuit 121 is High, it is activated in the normal mode, and when it is Low, it is activated in the special mode.
　バス切替ＩＣ１１２は、ＣＰＵに接続されるＦｌａｓｈ　ＲＯＭを、電圧判定回路１２１からの信号がＨｉｇｈならばＦｌａｓｈ　ＲＯＭ１１３に、ＬｏｗならばＦｌａｓｈ　ＲＯＭ１１４に切り替える。 The bus switching IC 112 switches the flash ROM connected to the CPU to the flash ROM 113 if the signal from the voltage determination circuit 121 is high, and to the flash ROM 114 if the signal is low.
　Ｆｌａｓｈ　ＲＯＭ１１３には通常のＦＷ（Firm Ware）が格納され、Ｆｌａｓｈ　ＲＯＭ１１４には特殊モード用のＦＷが格納されているものとする。本実施の形態にかかるＲＲＨ１では、読み込むＦｌａｓｈ　ＲＯＭ自体をハードウェア的に切り替えることで、ソフトウェアを介することなく、電源電圧のみの制御で通常モードと特殊モードとのモードの切り替えを可能とする。 It is assumed that a normal FW (Firmware) is stored in the flash ROM 113 and a special mode FW is stored in the flash ROM 114. In the RRH 1 according to the present embodiment, the flash ROM itself to be read is switched by hardware, so that the mode can be switched between the normal mode and the special mode by controlling only the power supply voltage without using software.
　一般に、ＲＲＨの通常の起動処理はまずＣＰＵがＦｌａｓｈ　ＲＯＭ内のＦＷを読み込む動作からスタートし、その先はソフトウェアにより制御されるが、本実施の形態では、読み込むＦｌａｓｈ　ＲＯＭそのものが切り替えられるため、ソフトウェアの制御によらず、特殊モードでの起動を行うことができる。 In general, the normal startup process of the RRH starts with the operation of the CPU reading the FW in the flash ROM first, and the destination is controlled by software. In this embodiment, however, the flash ROM itself to be read is switched. It is possible to start in the special mode regardless of the control.
　例えばＦＷについて説明すると、一般にＦＷは自身の正常性を診断する機能を備えている。例としては、起動処理の先頭でＦＷ全体のチェックサムを確認し、チェックサムが一致しない場合には、通常モードとは異なるモードの１つであるＳａｆｅモード用ＦＷで起動する等がある。しかし、上述のような、ＦＷのチェック機能が動作しない場合、Ｓａｆｅモードでの起動ができず、正常性の診断を行うことができない。例えば、ＦＷ自身のソフトウェア起動処理にすら入れないような破損の仕方をしている場合、判定をソフトウェアでしているため、最初の起動ができず、自身の異常を検出できない。 For example, FW will be described. Generally, FW has a function of diagnosing its normality. As an example, the checksum of the entire FW is confirmed at the beginning of the activation process, and if the checksums do not match, activation is performed with the Safe mode FW, which is one of modes different from the normal mode. However, if the FW check function does not operate as described above, it is not possible to start in the Safe mode, and normality diagnosis cannot be performed. For example, if the FW itself is not damaged even in the software activation process of the FW, since the determination is performed by software, the first activation cannot be performed and the abnormality cannot be detected.
　これに対し、本実施の形態の場合には、電源電圧の違いをトリガとし、その判定を電源制御部４でハードウェア的に行わせることでＦＷ本体がどのように破損していても、特殊モードに移行させることが可能となる。 On the other hand, in the case of the present embodiment, the difference between the power supply voltages is used as a trigger, and the determination is performed by hardware in the power supply control unit 4, so that no matter how the FW main body is damaged, It becomes possible to shift to the mode.
　次に、本実施の形態にかかる特殊モードについて説明する。上述したように、特殊モードの目的は、緊急時の障害検出又はＲＲＨ１の復旧であり、上述の例においては、特殊モードとして、機能を限定したＳａｆｅモードを起動させている。しかし、特殊モードについては、上記の例に限らず、また、特殊モードの目的も、障害検出又は復旧に限られるものではない。 Next, the special mode according to this embodiment will be described. As described above, the purpose of the special mode is to detect a failure in an emergency or to restore the RRH 1, and in the above example, the Safe mode with limited functions is activated as the special mode. However, the special mode is not limited to the above example, and the purpose of the special mode is not limited to failure detection or recovery.
　例えば、特殊モードの際、ＲＲＨ１の障害状態の調査結果の情報を、外部からの要求がなくとも、自動的に光配線を通じて外部に送信し続けるようにしてもよい。これにより、ＲＲＨ１が故障していることを検出でき、また、ＲＲＨ１を実際に回収して修理するか否か等の判断をより的確に行うことができる。 For example, in the special mode, the information on the investigation result of the failure state of the RRH 1 may be automatically transmitted to the outside through the optical wiring even if there is no request from the outside. As a result, it is possible to detect that the RRH 1 is out of order, and it is possible to more accurately determine whether or not the RRH 1 is actually collected and repaired.
　また例えば、特殊モードで起動した後、ＲＲＨ１の通常モード用ＦＷを光配線及びＲＥＣ５０経由で送出し、破損の有無又は破損状況などを診断するようにしてもよい。この場合には、正常な状態に修復したＦＷを、再度光配線を介してＲＲＨ１に送り、Ｆｌａｓｈ　ＲＯＭ１１３に上書きするようにしてもよい。また、上記のいくつかの動作は、同一の特殊モードで行わせてもよく、電源電圧に応じて異なる特殊モードを設け、異なる特殊モードのそれぞれにて行わせてもよい。 Also, for example, after starting in the special mode, the RRH1 normal mode FW may be sent via the optical wiring and the REC 50 to diagnose the presence or absence of breakage or the breakage status. In this case, the FW restored to a normal state may be sent again to the RRH 1 via the optical wiring and overwritten on the flash ROM 113. In addition, some of the above operations may be performed in the same special mode, or different special modes may be provided according to the power supply voltage, and may be performed in different special modes.
　さらに、例えば、特殊モードの１つに、信号処理部２の無線信号の出力動作を禁止するモード（完全停波モード）などを設けることもできる。この完全停波モードでは、ＲＥＣ５０からはＲＲＨ１は通常動作しているように見えるが、実際にはアンテナへの出力を完全に遮断するものとする。このモードにより、通常運用前の試運転時に、ＲＲＨ１の機能チェックとして使用することができる。また、完全に停波することにより、ＲＲＨが破損していることで違法な電波を出す可能性を０にすることができる。なお、このような特殊モードの場合、少なくともデジタル無線信号処理部２１については機能させた方が好ましく、アナログ無線信号処理回路部２２についても一部は動作させた方が好ましい。これにより、より広範囲の機能チェックを行うことができるためである。 Furthermore, for example, in one of the special modes, a mode (complete wave stop mode) for prohibiting the radio signal output operation of the signal processing unit 2 can be provided. In this complete stop mode, RRH1 appears to be operating normally from REC 50, but in reality, the output to the antenna is completely cut off. This mode can be used as a function check for RRH 1 during a test run before normal operation. Further, by completely stopping the wave, it is possible to reduce the possibility of emitting illegal radio waves due to the RRH being damaged. In the case of such a special mode, it is preferable that at least the digital radio signal processing unit 21 is functioned, and it is preferable that a part of the analog radio signal processing circuit unit 22 is also operated. This is because a wider range of function checks can be performed.
　上述したように、ＲＲＨ１は、電源電圧の大きさに応じて、複数の特殊モードを有するようにしてもよい。図５は、複数の特殊モードを有するＲＲＨ１の例を示す図である。ここでは、外部電源装置４０から供給される電源電圧が－４０Ｖ～－３８Ｖである場合にはメンテナンス用特殊起動モード１で起動し、－３８Ｖ～－３６Ｖである場合にはメンテナンス用特殊起動モード２で起動する。このような場合例えば、メンテナンス用特殊起動モード１では、単純にＳａｆｅモードでの起動を行う。そして、メンテナンス用特殊起動モード２では、ＲＲＨ内部の特定情報、たとえば障害のログなどを外部からの命令なしに光配線経由で発信し続けるモードとする。これにより、より障害の検出やＲＲＨ１の復旧を容易に行うことが可能となる。 As described above, the RRH 1 may have a plurality of special modes depending on the magnitude of the power supply voltage. FIG. 5 is a diagram illustrating an example of the RRH 1 having a plurality of special modes. Here, when the power supply voltage supplied from the external power supply device 40 is -40V to -38V, it starts in the special start mode 1 for maintenance, and when it is -38V to -36V, the special start mode 2 for maintenance is used. Start with. In such a case, for example, in the maintenance special activation mode 1, the activation is simply performed in the Safe mode. In the special start mode 2 for maintenance, a mode in which specific information inside the RRH, for example, a failure log is continuously transmitted via an optical wiring without a command from the outside. As a result, it becomes possible to more easily detect a failure and restore the RRH 1.
　以上、実施の形態を参照して本願発明を説明したが、本願発明は上記によって限定されるものではない。本願発明の構成や詳細には、発明のスコープ内で当業者が理解し得る様々な変更をすることができる。 The present invention has been described above with reference to the embodiment, but the present invention is not limited to the above. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the invention.
　上述の実施の形態では、本発明をハードウェアの構成として説明したが、本発明は、これに限定されるものではない。本発明は、任意の処理を、ＣＰＵ（Central Processing Unit）にコンピュータプログラムを実行させることにより実現することも可能である。また、上述したプログラムは、様々なタイプの非一時的なコンピュータ可読媒体（ｎｏｎ－ｔｒａｎｓｉｔｏｒｙ　ｃｏｍｐｕｔｅｒ　ｒｅａｄａｂｌｅ　ｍｅｄｉｕｍ）を用いて格納され、コンピュータに供給することができる。非一時的なコンピュータ可読媒体は、様々なタイプの実体のある記録媒体（ｔａｎｇｉｂｌｅ　ｓｔｏｒａｇｅ　ｍｅｄｉｕｍ）を含む。非一時的なコンピュータ可読媒体の例は、磁気記録媒体（例えばフレキシブルディスク、磁気テープ、ハードディスクドライブ）、光磁気記録媒体（例えば光磁気ディスク）、ＣＤ－ＲＯＭ（Ｒｅａｄ　Ｏｎｌｙ　Ｍｅｍｏｒｙ）ＣＤ－Ｒ、ＣＤ－Ｒ／Ｗ、半導体メモリ（例えば、マスクＲＯＭ、ＰＲＯＭ（Ｐｒｏｇｒａｍｍａｂｌｅ　ＲＯＭ）、ＥＰＲＯＭ（Ｅｒａｓａｂｌｅ　ＰＲＯＭ）、フラッシュＲＯＭ、ＲＡＭ（Ｒａｎｄｏｍ　Ａｃｃｅｓｓ　Ｍｅｍｏｒｙ））を含む。また、プログラムは、様々なタイプの一時的なコンピュータ可読媒体（ｔｒａｎｓｉｔｏｒｙ　ｃｏｍｐｕｔｅｒ　ｒｅａｄａｂｌｅ　ｍｅｄｉｕｍ）によってコンピュータに供給されてもよい。一時的なコンピュータ可読媒体の例は、電気信号、光信号、及び電磁波を含む。一時的なコンピュータ可読媒体は、電線及び光ファイバ等の有線通信路、又は無線通信路を介して、プログラムをコンピュータに供給できる。 In the above-described embodiment, the present invention has been described as a hardware configuration, but the present invention is not limited to this. The present invention can also realize arbitrary processing by causing a CPU (Central Processing Unit) to execute a computer program. Further, the above-described program can be stored using various types of non-transitory computer readable media and supplied to a computer. Non-transitory computer readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (eg, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg, magneto-optical disks), CD-ROM (Read Only Memory) CD-R, CD -R / W, including semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (Random Access Memory)). In addition, the program may be supplied to the computer by various types of temporary computer readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.
　この出願は、２０１１年５月１２日に出願された日本出願特願２０１１－１０７４５２を基礎とする優先権を主張し、その開示の全てをここに取り込む。 This application claims priority based on Japanese Patent Application No. 2011-107452 filed on May 12, 2011, the entire disclosure of which is incorporated herein.
（付記１）
　アンテナを介して携帯端末から受信した無線信号を処理する信号処理手段と、
　外部の制御装置に有線接続され、当該外部の制御装置からの指示に基づいて前記信号処理手段を制御する制御手段と、
　外部の電源装置に接続され、前記信号処理手段及び制御手段に電源電圧を供給する電源制御手段とを有し、
　前記電源制御手段は、外部から供給される電源電圧に応じて前記制御手段を制御し、無線ユニットを、通常の動作をする通常モードとは異なる特殊モードで起動する無線ユニット。
（付記２）
　前記外部から供給される電源電圧が所定の電圧範囲内である通常起動電圧である場合は、前記制御手段が前記無線ユニットを前記通常モードで起動し、
　前記電源制御手段は、前記外部から供給される電源電圧が前記通常起動電圧とは異なる所定の範囲内である特殊起動電圧であることを検出すると、前記無線ユニットを前記特殊モードで起動させる付記１記載の無線ユニット。
（付記３）
　前記通常起動電圧と前記特殊起動電圧との間に、前記通常モード及び特殊モードのいずれでも起動しない所定の電圧範囲である保護電圧帯が設けられている付記２記載の無線ユニット。
（付記４）
　前記電源制御手段は、前記外部から供給される電源電圧が、前記通常起動電圧、前記特殊起動電圧、又は前記保護電圧のいずれかを判定する電源電圧判定手段を有し、
　前記電源電圧判定手段は、前記外部から供給される電源電圧が前記特殊起動電圧であることを検出すると、前記制御手段により前記無線ユニットを前記特殊モードで起動させる
　付記２又は３記載の無線ユニット。
（付記５）
　前記電源電圧判定手段は、
　前記外部から供給される電源電圧を測定する測定手段と、
　前記測定手段の結果に基づいて、前記外部から供給される電源電圧が前記特殊起動電圧であるか否かを示す判定結果を前記制御手段に出力する判定結果出力回路とを有し、
　前記制御手段は、
　プログラムを実行する実行制御手段と、
　前記通常モードの際に前記実行制御手段が読み出す通常プログラムが記録された第１の記憶手段と、
　前記特殊モードの際に前記実行制御手段が読み出す特殊プログラムが記録された第２の記憶手段と、
　前記判定結果に応じて、前記実行制御手段と、前記第１及び第２の記憶手段との接続を切り替える切替手段と、を有し、
　前記判定結果が前記特殊起動電圧である場合は、前記実行制御手段は、前記第２の記憶手段から前記特殊プログラムを読み出し、前記無線ユニットを前記特殊モードで起動し、
　前記判定結果が前記特殊起動電圧でない場合は、前記実行制御手段は、前記第１の記憶手段から前記通常プログラムを読み出し、前記無線ユニットを前記通常モードで起動する
　付記２乃至４のいずれか１項記載の無線ユニット。
（付記６）
　前記特殊モードは、前記制御手段の全機能のうち一部の機能のみを使用するモードである
　付記１乃至５のいずれか１項記載の無線ユニット。
（付記７）
　前記特殊モードは、前記信号処理手段の動作を禁止するものである付記１乃至６のいずれか１項記載の無線ユニット。
（付記８）
　前記特殊モードでは、前記制御手段が前記無線ユニットの障害状態を調査し、当該障害状態の調査結果を自動的に、前記有線接続を介して前記外部の制御装置に送信する
　付記１乃至６のいずれか１項記載の無線ユニット。
（付記９）
　前記電源電圧に応じて、複数の異なる特殊モードを有する付記１乃至７のいずれか１項記載の無線ユニット。
（付記１０）
　アンテナを介して携帯端末から受信した無線信号を処理する信号処理手段と、外部の制御装置に有線接続され当該外部の制御装置からの指示に基づいて前記信号処理手段を制御する制御手段と、外部の電源装置に接続され前記信号処理手段及び制御手段に電源電圧を供給する電源制御手段とを有する無線ユニットの制御方法であって、
　外部から供給される電源電圧を測定し、
　前記外部から供給される電源電圧が、所定の範囲内である特殊起動電圧であるか否かを判定し、
　前記特殊起動電圧である場合は、前記電源制御手段の制御により前記無線ユニットを特殊モードで起動し、
　前記外部から供給される電源電圧が前記特殊起動電圧とは異なる所定の範囲内である通常起動電圧である場合は、前記制御手段の制御により前記無線ユニットを通常モードで起動する無線ユニットの制御方法。
（付記１１）
　前記無線ユニットを前記特殊モードで起動した場合は、前記制御手段は、前記無線ユニットの故障状態を調査する付記１０記載の無線ユニットの制御方法。
（付記１２）
　前記無線ユニットを前記特殊モードで起動した場合は、前記制御手段は、前記無線ユニットの故障状態を調査し、
　当該故障状態の調査結果を、外部からの指示によらず、前記有線接続を介して前記外部の制御装置に送信する
　付記１１又は１２記載の無線ユニットの制御方法。
（付記１３）
　アンテナと、
　前記アンテナを介して携帯端末と無線信号を送受信する無線ユニットと、
　前記無線ユニットと有線配線され、前記無線ユニットを制御する外部制御装置と、
　前記無線ユニットと有線接続され、前記無線ユニットに電源電圧を供給する外部電源装置とを備え、
　前記無線ユニットは、
　前記無線信号を処理する信号処理手段と、
　前記外部制御装置に有線接続され、当該外部制御装置からの指示に基づいて前記信号処理手段を制御する制御手段と、
　前記外部電源装置に接続され、前記信号処理手段及び制御手段に電源電圧を供給する電源制御手段とを有し、
　前記電源制御手段は、前記外部電源装置から供給される電源電圧に応じて前記制御手段を制御し、前記無線ユニットを、通常の動作をする通常モードとは異なる特殊モードで起動する通信システム。 (Appendix 1)
Signal processing means for processing a radio signal received from the mobile terminal via the antenna;
Control means connected to an external control device by wire and controlling the signal processing means based on an instruction from the external control device;
Power supply control means connected to an external power supply device and supplying a power supply voltage to the signal processing means and control means;
The power supply control unit is a wireless unit that controls the control unit in accordance with a power supply voltage supplied from the outside and starts the wireless unit in a special mode different from a normal mode in which a normal operation is performed.
(Appendix 2)
When the power supply voltage supplied from the outside is a normal starting voltage within a predetermined voltage range, the control means starts the wireless unit in the normal mode,
The power supply control means, when detecting that the power supply voltage supplied from the outside is a special start voltage within a predetermined range different from the normal start voltage, starts the wireless unit in the special mode. The wireless unit described.
(Appendix 3)
The wireless unit according to appendix 2, wherein a protective voltage band that is a predetermined voltage range that does not start in either the normal mode or the special mode is provided between the normal startup voltage and the special startup voltage.
(Appendix 4)
The power supply control means has power supply voltage determination means for determining whether the power supply voltage supplied from the outside is one of the normal start voltage, the special start voltage, or the protection voltage,
The wireless unit according to claim 2 or 3, wherein when the power supply voltage determination unit detects that the power supply voltage supplied from the outside is the special activation voltage, the control unit activates the wireless unit in the special mode.
(Appendix 5)
The power supply voltage determination means includes
Measuring means for measuring the power supply voltage supplied from the outside;
A determination result output circuit for outputting to the control means a determination result indicating whether or not a power supply voltage supplied from the outside is the special starting voltage based on the result of the measuring means;
The control means includes
Execution control means for executing a program;
First storage means in which a normal program read by the execution control means in the normal mode is recorded;
Second storage means in which a special program read by the execution control means in the special mode is recorded;
According to the determination result, the execution control means, and a switching means for switching the connection between the first and second storage means,
If the determination result is the special activation voltage, the execution control means reads the special program from the second storage means, activates the wireless unit in the special mode,
If the determination result is not the special startup voltage, the execution control unit reads the normal program from the first storage unit, and starts the wireless unit in the normal mode. The wireless unit described.
(Appendix 6)
The wireless unit according to any one of claims 1 to 5, wherein the special mode is a mode in which only a part of all functions of the control unit is used.
(Appendix 7)
The wireless unit according to any one of appendices 1 to 6, wherein the special mode prohibits the operation of the signal processing means.
(Appendix 8)
In the special mode, the control unit investigates the failure state of the wireless unit and automatically transmits the failure state investigation result to the external control device via the wired connection. The wireless unit according to claim 1.
(Appendix 9)
The wireless unit according to any one of appendices 1 to 7, having a plurality of different special modes according to the power supply voltage.
(Appendix 10)
Signal processing means for processing a radio signal received from a portable terminal via an antenna, control means for controlling the signal processing means based on an instruction from the external control apparatus connected to an external control apparatus, and external A wireless unit control method comprising: a power supply control means for supplying a power supply voltage to the signal processing means and the control means connected to the power supply apparatus of
Measure the power supply voltage supplied from the outside,
Determining whether the externally supplied power supply voltage is a special starting voltage within a predetermined range;
In the case of the special starting voltage, the wireless unit is started in a special mode under the control of the power control means,
When the power supply voltage supplied from the outside is a normal startup voltage within a predetermined range different from the special startup voltage, the wireless unit control method for starting the wireless unit in the normal mode by the control of the control means .
(Appendix 11)
The wireless unit control method according to appendix 10, wherein when the wireless unit is activated in the special mode, the control means investigates a failure state of the wireless unit.
(Appendix 12)
When the wireless unit is activated in the special mode, the control means investigates a failure state of the wireless unit,
The wireless unit control method according to appendix 11 or 12, wherein the investigation result of the failure state is transmitted to the external control device via the wired connection, without an instruction from the outside.
(Appendix 13)
An antenna,
A wireless unit that transmits and receives wireless signals to and from the mobile terminal via the antenna;
An external control device that is wired with the wireless unit and controls the wireless unit;
An external power supply that is wired to the wireless unit and supplies a power supply voltage to the wireless unit;
The wireless unit is
Signal processing means for processing the radio signal;
Control means connected to the external control device by wire and controlling the signal processing means based on an instruction from the external control device;
Power supply control means connected to the external power supply device and supplying a power supply voltage to the signal processing means and control means;
The power supply control means controls the control means in accordance with a power supply voltage supplied from the external power supply device, and activates the wireless unit in a special mode different from the normal mode for normal operation.
　１　ＲＲＨ
　２　信号処理部
　３　制御部
　４　電源制御部
　１０　電圧制御回路部
　１１　主要電源回路部（ＤＤコンバータ）
　１２　電源測定回路部
　２１　デジタル無線信号処理回路部
　２２　アナログ無線信号処理回路部
　３０　アンテナ
　４０　外部電源装置
　５０　ＲＥＣ
　１００　通信システム
　１１１　ＣＰＵ
　１１２　バス切替ＩＣ
　１１３　Ｆｌａｓｈ　ＲＯＭ
　１１４　Ｆｌａｓｈ　ＲＯＭ
　１２１　電圧判定回路
　１２２　電圧測定ＩＣ 1 RRH
2 Signal processing unit 3 Control unit 4 Power supply control unit 10 Voltage control circuit unit 11 Main power supply circuit unit (DD converter)
12 power measurement circuit unit 21 digital radio signal processing circuit unit 22 analog radio signal processing circuit unit 30 antenna 40 external power supply device 50 REC
100 communication system 111 CPU
112 Bus switching IC
113 Flash ROM
114 Flash ROM
121 Voltage determination circuit 122 Voltage measurement IC

Claims (10)

  1. 　アンテナを介して携帯端末から受信した無線信号を処理する信号処理手段と、
    　外部の制御装置に有線接続され、当該外部の制御装置からの指示に基づいて前記信号処理手段を制御する制御手段と、
    　外部の電源装置に接続され、前記信号処理手段及び制御手段に電源電圧を供給する電源制御手段とを有し、
    　前記電源制御手段は、外部から供給される電源電圧に応じて前記制御手段を制御し、無線ユニットを、通常の動作をする通常モードとは異なる特殊モードで起動する無線ユニット。     Signal processing means for processing a radio signal received from the mobile terminal via the antenna;
    Control means connected to an external control device by wire and controlling the signal processing means based on an instruction from the external control device;
    Power supply control means connected to an external power supply device and supplying a power supply voltage to the signal processing means and control means;
    The power supply control unit is a wireless unit that controls the control unit in accordance with a power supply voltage supplied from the outside and starts the wireless unit in a special mode different from a normal mode in which a normal operation is performed.
  2. 　前記外部から供給される電源電圧が所定の電圧範囲内である通常起動電圧である場合は、前記制御手段が前記無線ユニットを前記通常モードで起動し、
    　前記電源制御手段は、前記外部から供給される電源電圧が前記通常起動電圧とは異なる所定の範囲内である特殊起動電圧であることを検出すると、前記無線ユニットを前記特殊モードで起動させる請求項１記載の無線ユニット。     When the power supply voltage supplied from the outside is a normal starting voltage within a predetermined voltage range, the control means starts the wireless unit in the normal mode,
    The power supply control unit activates the wireless unit in the special mode when detecting that the power supply voltage supplied from the outside is a special start voltage that is within a predetermined range different from the normal start voltage. The wireless unit according to 1.
  3. 　前記通常起動電圧と前記特殊起動電圧との間に、前記通常モード及び特殊モードのいずれでも起動しない所定の電圧範囲である保護電圧帯が設けられている請求項２記載の無線ユニット。 The wireless unit according to claim 2, wherein a protective voltage band that is a predetermined voltage range that does not start in either the normal mode or the special mode is provided between the normal start voltage and the special start voltage.
  4. 　前記電源制御手段は、前記外部から供給される電源電圧が、前記通常起動電圧、前記特殊起動電圧、又は前記保護電圧のいずれかを判定する電源電圧判定手段を有し、
    　前記電源電圧判定手段は、前記外部から供給される電源電圧が前記特殊起動電圧であることを検出すると、前記制御手段により前記無線ユニットを前記特殊モードで起動させる
    　請求項２又は３記載の無線ユニット。     The power supply control means has power supply voltage determination means for determining whether the power supply voltage supplied from the outside is one of the normal start voltage, the special start voltage, or the protection voltage,
    4. The wireless unit according to claim 2, wherein when the power supply voltage determination unit detects that the power supply voltage supplied from the outside is the special activation voltage, the control unit activates the wireless unit in the special mode. 5. .
  5. 　前記電源電圧判定手段は、
    　前記外部から供給される電源電圧を測定する測定手段と、
    　前記測定手段の結果に基づいて、前記外部から供給される電源電圧が前記特殊起動電圧であるか否かを示す判定結果を前記制御手段に出力する判定結果出力回路とを有し、
    　前記制御手段は、
    　プログラムを実行する実行制御手段と、
    　前記通常モードの際に前記実行制御手段が読み出す通常プログラムが記録された第１の記憶手段と、
    　前記特殊モードの際に前記実行制御手段が読み出す特殊プログラムが記録された第２の記憶手段と、
    　前記判定結果に応じて、前記実行制御手段と、前記第１及び第２の記憶手段との接続を切り替える切替手段と、を有し、
    　前記判定結果が前記特殊起動電圧である場合は、前記実行制御手段は、前記第２の記憶手段から前記特殊プログラムを読み出し、前記無線ユニットを前記特殊モードで起動し、
    　前記判定結果が前記特殊起動電圧でない場合は、前記実行制御手段は、前記第１の記憶手段から前記通常プログラムを読み出し、前記無線ユニットを前記通常モードで起動する
    　請求項２乃至４のいずれか１項記載の無線ユニット。     The power supply voltage determination means includes
    Measuring means for measuring the power supply voltage supplied from the outside;
    A determination result output circuit for outputting to the control means a determination result indicating whether or not a power supply voltage supplied from the outside is the special starting voltage based on the result of the measuring means;
    The control means includes
    Execution control means for executing a program;
    First storage means in which a normal program read by the execution control means in the normal mode is recorded;
    Second storage means in which a special program read by the execution control means in the special mode is recorded;
    According to the determination result, the execution control means, and a switching means for switching the connection between the first and second storage means,
    If the determination result is the special activation voltage, the execution control means reads the special program from the second storage means, activates the wireless unit in the special mode,
    The execution control unit reads the normal program from the first storage unit and starts the wireless unit in the normal mode when the determination result is not the special activation voltage. The wireless unit described in the section.
  6. 　前記特殊モードは、前記制御手段の全機能のうち一部の機能のみを使用するモードである
    　請求項１乃至５のいずれか１項記載の無線ユニット。     The wireless unit according to any one of claims 1 to 5, wherein the special mode is a mode in which only a part of all functions of the control unit is used.
  7. 　前記特殊モードは、前記信号処理手段の動作を禁止するものである請求項１乃至６のいずれか１項記載の無線ユニット。 The wireless unit according to any one of claims 1 to 6, wherein the special mode prohibits the operation of the signal processing means.
  8. 　前記電源電圧に応じて、複数の異なる特殊モードを有する
    　請求項１乃至６のいずれか１項記載の無線ユニット。     The wireless unit according to claim 1, wherein the wireless unit has a plurality of different special modes according to the power supply voltage.
  9. 　外部から供給される電源電圧を測定し、
    　前記外部から供給される電源電圧が、所定の範囲内である特殊起動電圧であるか否かを判定し、
    　前記特殊起動電圧である場合は、外部の電源装置に接続され、無線ユニットに電源電圧を供給する電源制御手段の制御により前記無線ユニットを特殊モードで起動し、
    　前記外部から供給される電源電圧が前記特殊起動電圧とは異なる所定の範囲内である通常起動電圧である場合は、外部の制御装置に有線接続され当該外部の制御装置からの指示に基づいて制御する制御手段の制御により前記無線ユニットを通常モードで起動する無線ユニットの制御方法。     Measure the power supply voltage supplied from the outside,
    Determining whether the externally supplied power supply voltage is a special starting voltage within a predetermined range;
    In the case of the special starting voltage, it is connected to an external power supply device, and the wireless unit is started in a special mode under the control of a power supply control means for supplying a power supply voltage to the wireless unit.
    When the power supply voltage supplied from the outside is a normal start voltage that is within a predetermined range different from the special start voltage, the control is performed based on an instruction from the external control device that is wired to the external control device. A method of controlling a wireless unit that activates the wireless unit in a normal mode under the control of a control means.
  10. 　アンテナと、
    　前記アンテナを介して携帯端末と無線信号を送受信する無線ユニットと、
    　前記無線ユニットと有線配線され、前記無線ユニットを制御する外部制御装置と、
    　前記無線ユニットと有線接続され、前記無線ユニットに電源電圧を供給する外部電源装置とを備え、
    　前記無線ユニットは、
    　前記無線信号を処理する信号処理手段と、
    　前記外部制御装置に有線接続され、当該外部制御装置からの指示に基づいて前記信号処理手段を制御する制御手段と、
    　前記外部電源装置に接続され、前記信号処理手段及び制御手段に電源電圧を供給する電源制御手段とを有し、
    　前記電源制御手段は、前記外部電源装置から供給される電源電圧に応じて前記制御手段を制御し、前記無線ユニットを、通常の動作をする通常モードとは異なる特殊モードで起動する通信システム。     An antenna,
    A wireless unit that transmits and receives wireless signals to and from the mobile terminal via the antenna;
    An external control device that is wired with the wireless unit and controls the wireless unit;
    An external power supply that is wired to the wireless unit and supplies a power supply voltage to the wireless unit;
    The wireless unit is
    Signal processing means for processing the radio signal;
    Control means connected to the external control device by wire and controlling the signal processing means based on an instruction from the external control device;
    Power supply control means connected to the external power supply device and supplying a power supply voltage to the signal processing means and control means;
    The power supply control means controls the control means in accordance with a power supply voltage supplied from the external power supply device, and activates the wireless unit in a special mode different from the normal mode for normal operation.
PCT/JP2012/002614 2011-05-12 2012-04-16 Wireless unit, method for controlling wireless unit, and communication system WO2012153463A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000278199A (en) * 1999-03-29 2000-10-06 Kokusai Electric Co Ltd Radio base station and method for controlling automatic on/off of its transmission power
JP2004280340A (en) * 2003-03-14 2004-10-07 Hitachi Kokusai Electric Inc Starting system for radio base station
JP2005057651A (en) * 2003-08-07 2005-03-03 Hitachi Kokusai Electric Inc Method for monitoring quality of optical digital transmission and radio base station apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000278199A (en) * 1999-03-29 2000-10-06 Kokusai Electric Co Ltd Radio base station and method for controlling automatic on/off of its transmission power
JP2004280340A (en) * 2003-03-14 2004-10-07 Hitachi Kokusai Electric Inc Starting system for radio base station
JP2005057651A (en) * 2003-08-07 2005-03-03 Hitachi Kokusai Electric Inc Method for monitoring quality of optical digital transmission and radio base station apparatus

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