JP2008035430A - Radio communication system - Google Patents

Radio communication system Download PDF

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JP2008035430A
JP2008035430A JP2006209076A JP2006209076A JP2008035430A JP 2008035430 A JP2008035430 A JP 2008035430A JP 2006209076 A JP2006209076 A JP 2006209076A JP 2006209076 A JP2006209076 A JP 2006209076A JP 2008035430 A JP2008035430 A JP 2008035430A
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base station
power supply
communication system
outdoor
wireless communication
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Norimichi Takei
則道 武井
Takayuki Doge
孝幸 道下
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Hitachi Kokusai Electric Inc
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Hitachi Kokusai Electric Inc
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio communication system in which, when a power supply supplying the power to a base station which is supplied with the power supply from an outside is stopped for some reason, a management side managing this system can detect a stop of supplying the power supply. <P>SOLUTION: In the radio communication system comprising at least one base station and a mobile station, the base station comprises at least an antenna part, a radio part and a preparatory power supply. Further, if the base station detects the stop of supplying the power supply for operation, the base station switches a destination of supplying the power supply to the preparatory power supply, and also notifies a prescribed notification destination of the stop of supplying the power supply. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、無線通信システムに関し、特にＳＣＰＣ方式による無線通信システムに関するものである。   The present invention relates to a radio communication system, and more particularly to a radio communication system based on the SCPC method.

統制局または基地局及び複数の移動局から構成される無線通信システムには、様々な種類の通信方式による無線通信システムが存在するが、そのうちの1つにＳＣＰＣ（Single Channel Per Carrier）方式による無線通信システムが知られている。そして、このような無線通信システムについては、従来から規格が定められていて、通常はこれに準拠したシステム構成が為されている（例えば非特許文献１参照。）。 There are various types of wireless communication systems in a wireless communication system composed of a control station or a base station and a plurality of mobile stations. One of them is a wireless system based on an SCPC (Single Channel Per Carrier) system. Communication systems are known. And about such a radio | wireless communications system, the standard has been defined conventionally and the system structure based on this is usually made (for example, refer nonpatent literature 1).

ここで、従来の無線通信システムについて図を用いて説明する。図４は、ＳＣＰＣ方式による従来の無線通信システムの一例を示した図である。
図４において、４０１はシステムを管理するための管理センタであり、該管理センタには、複数台の操作卓４０２−１、４０２−２、４０２−３と、各操作卓共通の切替装置４０３と、切替装置４０３に接続された基地局４０４−１、４０４−２が設けられている。また、基地局４０４−１の通信エリア（あるいは通信ゾーン、サービスエリアともいう。）４０６内に位置し、移動局同士、または操作卓４０２−１等と無線通信を行う移動局４０５−１、４０５−２が存在し、無線通信を行っている。また、基地局４０４−２の通信エリア４０７についても基地局４０４−１側と同様、移動局４０５−３、４０５−４が存在し、無線通信が可能となっている。
なお、操作卓を代表するときには操作卓４０２と称し、基地局を代表するときには基地局４０４、移動局を代表するときには移動局４０５と称して説明をする。また、図４では説明の簡便の為、基地局１台に対し移動局を２台として記載しているが、基地局、移動局共にこれに限定されるものではなく、さらに多くの基地局を設置しても良いし、移動局を設けても良い。 Here, a conventional wireless communication system will be described with reference to the drawings. FIG. 4 is a diagram illustrating an example of a conventional wireless communication system using the SCPC method.
In FIG. 4, reference numeral 401 denotes a management center for managing the system. The management center includes a plurality of consoles 402-1, 402-2, and 402-3, and a switching device 403 common to each console. , Base stations 404-1 and 404-2 connected to the switching device 403 are provided. In addition, mobile stations 405-1 and 405 that are located within a communication area (or communication zone or service area) 406 of the base station 404-1, and perform wireless communication with each other or with the console 402-1 or the like. -2 exists and is performing wireless communication. Similarly to the base station 404-1 side, mobile stations 405-3 and 405-4 exist in the communication area 407 of the base station 404-2, and wireless communication is possible.
In the description, the console is referred to as the console 402, the base station is referred to as the base station 404, and the mobile station is referred to as the mobile station 405. Further, in FIG. 4, for convenience of explanation, two mobile stations are described for one base station, but both the base station and the mobile station are not limited to this, and more base stations are provided. It may be installed or a mobile station may be provided.

このようなＳＣＰＣ方式の無線通信システムでは、例えば操作卓４０２−１より切替装置４０３を介して基地局４０４−１や基地局４０４−２の中の何れかを選択することにより、選択した基地局、例えば基地局４０４−１の通信エリア４０６内に存在している移動局４０５−１、または４０５−２と通話ができるようになっている。例えば、操作卓４０２−１と移動局４０５−１が通話するときには、操作卓４０２−１が通話の相手として移動局４０５−１を選択すると、切替装置４０３を介して基地局４０４−１から周波数Ｆ１の搬送波を用いて、移動局４０５−１へと送信出力を行う。移動局４０５−１では、操作卓４０２−１へと無線送信する際には周波数ｆ１の搬送波を用いて無線通信を行う。   In such an SCPC wireless communication system, the selected base station is selected by selecting either the base station 404-1 or the base station 404-2 from the console 402-1 via the switching device 403, for example. For example, the mobile station 405-1 or 405-2 existing in the communication area 406 of the base station 404-1 can be talked. For example, when the operator console 402-1 and the mobile station 405-1 make a call, if the operator console 402-1 selects the mobile station 405-1 as the partner of the call, the frequency is transmitted from the base station 404-1 via the switching device 403. Using the F1 carrier wave, transmission output is performed to the mobile station 405-1. The mobile station 405-1 performs wireless communication using a carrier wave having a frequency f1 when wirelessly transmitting to the console 402-1.

「ＡＲＩＢ ＳＴＤ−Ｔ６１ 狭帯域デジタル通信方式（ＳＣＰＣ／ＦＤＭＡ）」社団法人 電波産業会"ARIB STD-T61 Narrowband Digital Communication System (SCPC / FDMA)" Japan Radio Industry Association

上記のような従来技術では、基地局無線設備の設置場所が限定されている点に配慮がされておらず、通信エリアを拡大するなどの基地局の設置場所に問題があった。
このような問題を解決するため、例えば、管理センタ等の屋内に設置せずに、管理センタと有線または無線にて接続されて設置する屋外用の基地局等が設けられるようになった。
このような基地局では、起動のための電源を基地局装置内に持たず、外部より電源を取り入れ、装置内には予備電源のみ設置するような構造となっていた。
しかし、このような場合、外部からの電源が何らかの理由により供給されなくなってしまうと管理センタでは基地局内の予備電源の有効時間が経過し、基地局の機能が停止して初めて状況を知ることとなってしまい、システムを復旧させるための指示あるいは作業については機能停止後となってしまう。
そこで、屋外に設置した基地局に電源の供給が停止した場合でも管理センタで電源の供給停止を検知することができる無線通信システムの実現が望まれている。 The conventional techniques as described above do not take into consideration that the installation location of the base station radio equipment is limited, and there is a problem in the installation location of the base station such as expanding the communication area.
In order to solve such a problem, for example, an outdoor base station or the like that is installed in a wired or wireless connection with the management center without being installed indoors in the management center or the like has been provided.
Such a base station has a structure in which the power supply for starting is not provided in the base station apparatus, the power supply is taken in from the outside, and only the standby power supply is installed in the apparatus.
However, in such a case, if the external power supply is stopped for some reason, the management center knows the situation only after the effective time of the standby power supply in the base station has passed and the base station function is stopped. Therefore, the instruction or work for restoring the system is after the function is stopped.
Therefore, it is desired to realize a wireless communication system that can detect a power supply stoppage at a management center even when power supply to a base station installed outdoors is stopped.

本発明は、無線通信システムにおいて、外部より電源を供給されている基地局が、何らかの理由で電源供給が停止された場合、システムを管理している管理側で電源供給停止を検知する事が出来る無線通信システムを提供することを目的とする。
また、本発明の他の目的は、外部からの電源供給が停止したときに効率よくバッテリーセービングを行うことを可能とする基地局を提供することである。 In the wireless communication system according to the present invention, when a base station to which power is supplied from the outside is stopped for some reason, the management side managing the system can detect the power supply stop. An object is to provide a wireless communication system.
Another object of the present invention is to provide a base station that can efficiently perform battery saving when external power supply is stopped.

上記目的を達成するため、請求項１に記載の無線通信システムは、少なくとも１つの基地局と、移動局からなる無線通信システムにおいて、前記基地局は、少なくともアンテナ部と、無線部と、予備電源を具備しており、さらに前記基地局は、動作のための電源供給が停止したことを検知すると、電源供給先を前記予備電源に切り替えると共に、予め定められた通知先へ電源供給が停止したことを通知することを特徴とする。 To achieve the above object, a radio communication system according to claim 1 is a radio communication system comprising at least one base station and a mobile station, wherein the base station includes at least an antenna unit, a radio unit, and a standby power source. In addition, when the base station detects that the power supply for operation has been stopped, the base station switches the power supply destination to the standby power supply, and the power supply to the predetermined notification destination has stopped. It is characterized by notifying.

また、上記目的を達成するため、請求項２に記載の無線通信システムは、請求項１記載の無線通信システムにおいて、
前記基地局は、電源供給先を前記予備電源に切り替わったことを検知すると、予め定められていた機能を動作させ、消費する電力を低減するように動作させることを特徴とする。 In order to achieve the above object, the radio communication system according to claim 2 is the radio communication system according to claim 1,
When the base station detects that the power supply destination has been switched to the standby power source, the base station operates a predetermined function and operates to reduce power consumption.

以上説明したように、本発明によれば、外部より電源を供給されている基地局が、何らかの理由で電源供給が停止された場合、システムを管理している管理側で電源供給停止を検知する事が出来る無線通信システムを提供することができる。 As described above, according to the present invention, when a base station to which power is supplied from the outside is stopped for some reason, the management side managing the system detects the power supply stop. It is possible to provide a wireless communication system capable of doing things.

以下、本発明について図を用いて説明する。図１は本発明の一実施例を示した無線通信システムの概略構成のブロック図である。
図１において、１０１は管理センタであり、該管理センタ１０１内には従来と同様に操作卓１０２−１、１０２−２、１０２−３と、切替装置１０３、基地局１０４−１、１０４−２が設置されている。また、切替装置１０３には例えば電柱等の立柱に設置された屋外型基地局１０８−１、１０８−２が有線にて接続されている。基地局１０４−１の通信エリア１０６内には移動局１０５−１と移動局１０５−２が位置しており、操作卓１０２−１、１０２−２、１０２−３や移動局１０５−２と無線通信が可能となっている。また基地局１０４−２の通信エリア１０７に位置する移動局１０５−３、１０５−４、や、屋外型基地局１０８の通信エリア１０９に位置する移動局１０５−５、１０５−６においても同様に無線通信が可能である。また、各移動局や操作卓における無線通信については従来同様であるため説明を省略する。
なお、操作卓を代表するときには操作卓１０２と称することとし、基地局や屋外型基地局、移動局についても同様に基地局１０４、屋外型基地局１０８、移動局１０５と称して説明する。さらに本実施例では説明の簡便化の為に基地局や屋外型基地局、操作卓、移動局を図のように示したが、これに限定されるものでなく、例えば屋外型基地局をさらに多く（あるいは少なく）設置しても良いし、操作卓や移動局をさらに多く（あるいは少なく）設けるようにしても良いことは言うまでもない。 The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a schematic configuration of a wireless communication system showing an embodiment of the present invention.
In FIG. 1, reference numeral 101 denotes a management center. In the management center 101, consoles 102-1, 102-2, and 102-3, a switching device 103, and base stations 104-1 and 104-2 are provided as in the conventional case. Is installed. In addition, outdoor type base stations 108-1 and 108-2 installed on a standing pole such as a utility pole are connected to the switching device 103 by wire. A mobile station 105-1 and a mobile station 105-2 are located in the communication area 106 of the base station 104-1, and are wirelessly connected to the consoles 102-1, 102-2, 102-3 and the mobile station 105-2. Communication is possible. The same applies to the mobile stations 105-3 and 105-4 located in the communication area 107 of the base station 104-2 and the mobile stations 105-5 and 105-6 located in the communication area 109 of the outdoor base station 108. Wireless communication is possible. Further, since wireless communication in each mobile station and console is the same as in the prior art, description thereof is omitted.
The representative console is referred to as the console 102, and the base station, the outdoor base station, and the mobile station are also referred to as the base station 104, the outdoor base station 108, and the mobile station 105 in the same manner. Further, in the present embodiment, for the sake of simplicity of explanation, a base station, an outdoor type base station, an operation console, and a mobile station are shown as shown in the figure. However, the present invention is not limited to this example. Needless to say, more (or fewer) may be provided, and more (or fewer) consoles and mobile stations may be provided.

次に図１に示す屋外型基地局１０８について図３を用いて説明する。
図３は屋外型基地局１０８の設置場所および設置方法について一例を示した図面である。図３（a）において、屋外型基地局１０８は、耐候性と堅牢性を持たせるため、所定の筐体に収納した上で立柱３０２に取り付けられている。そして、このとき屋外型基地局の本体が持つ性能は、他の基地局１０４と同じである。 Next, the outdoor type base station 108 shown in FIG. 1 will be described with reference to FIG.
FIG. 3 is a drawing showing an example of the installation location and installation method of the outdoor type base station 108. In FIG. 3A, the outdoor base station 108 is attached to the upright column 302 after being housed in a predetermined housing in order to provide weather resistance and robustness. At this time, the performance of the main body of the outdoor type base station is the same as that of the other base stations 104.

次に、立柱３０２は管理センタ１０１とは異なる場所で、且つ、この管理センタ１０１内に設けられている基地局１０４の通信エリア１０６および１０７から離れて、別の地域をカバーするのに必要な新たな通信エリア１０９が、屋外型基地局１０８により形成される場所に設置されている。
ここで、この立柱３０２としては、このシステム専用に設置したものでも良く、使用について了承が得られていれば、商用電力供給用の既設の電柱であっても良い。ここで、専用に設置する場合には、木柱やコンクリート柱、あるいはパンザマストなどと呼ばれている鋼板組立柱などが用いられても良い。 Next, the vertical pole 302 is required to cover a different area at a location different from the management center 101 and away from the communication areas 106 and 107 of the base station 104 provided in the management center 101. A new communication area 109 is installed in a place formed by the outdoor base station 108.
Here, the standing pole 302 may be installed exclusively for this system, or may be an existing utility pole for supplying commercial power as long as the use is approved. Here, in the case of dedicated installation, a steel column, a concrete column, a steel plate assembly column called a panther mast, or the like may be used.

さらに、屋外型基地局１０８は通常は地上から５〜６ｍ程度の高さになるようにして、立柱３０２に取り付けられるがこの立柱には電源ライン３０３、データライン３０４が張架され、更にアンテナ３０１が取り付けられている。この電源ライン３０３は、屋外型基地局１０８に動作用の電力、例えばＡＣ電源を供給するために使用され、このとき立柱３０２として商用電力供給用の電柱が用いられている場合には、その電柱に配線されている電力線から給電され、パンザマストなど専用に設置した場合には、最寄の電柱からそこに配線されている電力線から給電されることになる。 Furthermore, the outdoor base station 108 is usually attached to a vertical pole 302 so as to have a height of about 5 to 6 m from the ground. A power line 303 and a data line 304 are stretched on the vertical pole, and the antenna 301 is further extended. Is attached. The power supply line 303 is used to supply operation power, for example, AC power, to the outdoor base station 108. At this time, when a utility pole for supplying commercial power is used as the standing pole 302, the utility pole is used. When power is supplied from a power line wired to the terminal and is installed exclusively for a panther mast or the like, power is supplied from the power line wired there from the nearest power pole.

次に、データライン３０３は、管理センタ１０１の切替装置１０３に接続され、これらの間の通信ラインを構成するのに使用され、音声信号の伝送とトーンやＭＳＫなどの制御信号の伝送を行うもので、通常は４Ｗメタル回線や２Ｗメタル回線、または４Ｗ搬送回線が使用される。また、アンテナ３０１は屋外型基地局１０８のアンテナ端子に接続されていて、屋外型基地局１０８の通信エリア１０９の確保に必要な地上高が得られるように立柱３０２の上部に取り付けられている。 Next, the data line 303 is connected to the switching device 103 of the management center 101 and is used to construct a communication line between them, and transmits audio signals and control signals such as tone and MSK. In general, a 4W metal line, a 2W metal line, or a 4W carrier line is used. The antenna 301 is connected to the antenna terminal of the outdoor base station 108 and is attached to the upper part of the upright column 302 so that the ground height necessary for securing the communication area 109 of the outdoor base station 108 can be obtained.

図３（b）は、立柱に対する屋外型基地局１０８の支持方法の一例を示したものであり、図示のように、まず設置台３０６を支柱３０７と支持金具３０５により立柱３０２に取り付け、この上に耐候性の筐体に納められている屋外型基地局１０８を設置し、固定金具３０８により設置台３０６へ固定し、立柱３０２へも同様に固定金具によって固定されている。 FIG. 3 (b) shows an example of a method for supporting the outdoor base station 108 with respect to the upright column. As shown in the figure, first, the installation base 306 is attached to the upright column 302 by the support column 307 and the support bracket 305. The outdoor base station 108 housed in a weather-resistant housing is installed, fixed to the installation base 306 by a fixing bracket 308, and similarly fixed to the upright column 302 by the fixing bracket.

本発明における第１実施例について図２（a）、図５（a）、図６を用いて説明する。
図２は本発明における屋外型基地局の一実施例を示した概略構成のブロック図であり、図５は本発明の一実施例を示した無線通信システムの概略構成のブロック図、図６は本発明におけるシステム内に設置されている基地局の状態を表示する表示部の一実施例を示した図である。
図２（a）において、２０１はアンテナ部、２０２は無線部、２０３は送受信部、２０４は制御部、２０５は電源部、２０６は外部電源用Ｉ/Ｆ、２０７は予備電源、２０８は例えば管理センタ内の切替装置といった屋外型基地局外の装置と接続される外部装置接続部、２０９は外部電源接続装置である。また図５において、５０１はシステムに設置されている各基地局の送受信状態を表示する表示部である。ここで、図１と同じ部分については同じ番号を付してある。 A first embodiment of the present invention will be described with reference to FIGS. 2 (a), 5 (a), and 6. FIG.
FIG. 2 is a block diagram of a schematic configuration showing an embodiment of an outdoor base station according to the present invention, FIG. 5 is a block diagram of a schematic configuration of a wireless communication system showing an embodiment of the present invention, and FIG. It is the figure which showed one Example of the display part which displays the state of the base station installed in the system in this invention.
In FIG. 2A, 201 is an antenna unit, 202 is a radio unit, 203 is a transmission / reception unit, 204 is a control unit, 205 is a power supply unit, 206 is an external power supply I / F, 207 is a standby power supply, and 208 is management, for example. An external device connection unit 209 connected to a device outside the outdoor base station such as a switching device in the center is an external power supply connection device. In FIG. 5, reference numeral 501 denotes a display unit that displays the transmission / reception state of each base station installed in the system. Here, the same parts as those in FIG.

図５（a）において、例えば屋外型基地局１０８−１にて外部電源供給が停止した場合、屋外型基地局１０８では、外部電源用Ｉ/Ｆ２０６からの電源供給がなくなることを検知して、予備電源２０７に切替わる。電源が予備電源に切替ると、制御部２０４では外部装置接続部２０８を介して外部電源からの供給が停止したことを管理センタ１０１に通知する。管理センタ１０１では電源供給停止の通知があると、管理センタ１０１内に設けられている表示部５０１にて電源供給停止の表示がなされる。
一方、電源が予備電源に切替わった屋外型基地局１０８−１ではバッテリーセービングを行う。例えば、屋外型基地局１０８−１が無線送信基地局として選択されていた場合、通常であれば常に電波を発信し、通話可能な状態（以下、常送状態）として動作しているが、予備電源に切替わることで電波を発射せず、通話不可能な状態（以下、非常送状態）に切替わる。また、このように予備電源に切替わっているときには、例えば操作卓１０２および切替装置１０３から屋外型基地局１０８−１に対し、通話が入ると常送となり、通話が終了すると、一定時間後に再度非常送となり、復電すると自動的に常送状態へ移行し通話可能となる。
ここで、基地局１０８−１ではバッテリーセービングの状態になったことを自身の通信エリア１０９内に位置する移動局１０５へ通知しても良く、移動局１０５より基地局１０８−１を介した通信を行う際に通知するようにしても良い。
In FIG. 5A, for example, when the external power supply is stopped at the outdoor base station 108-1, the outdoor base station 108 detects that the power supply from the external power supply I / F 206 is lost, The standby power supply 207 is switched. When the power source is switched to the standby power source, the control unit 204 notifies the management center 101 that the supply from the external power source is stopped via the external device connection unit 208. When the management center 101 receives a power supply stop notification, the display 501 provided in the management center 101 displays a power supply stop.
On the other hand, the outdoor type base station 108-1 whose power source is switched to the standby power source performs battery saving. For example, when outdoor type base station 108-1 is selected as a wireless transmission base station, radio waves are always transmitted normally, and it is operating in a state where communication is possible (hereinafter referred to as a normal transmission state). By switching to the power source, radio waves are not emitted and switching to a state where telephone conversation is impossible (hereinafter referred to as an emergency transmission state) is performed. In addition, when switching to the standby power source is performed as described above, for example, when a call is made from the console 102 and the switching device 103 to the outdoor type base station 108-1, a regular transmission is performed. It becomes emergency transmission, and when power is restored, it automatically shifts to the normal transmission state and can talk.
Here, the base station 108-1 may notify the mobile station 105 located in its own communication area 109 that the battery saving state has been established, and communication from the mobile station 105 via the base station 108-1. You may make it notify when performing.

管理センタ１０１内に設けられている表示部５０１は、例えば、それぞれの操作卓に設けられており、それぞれ基地局が信号を受信中であるかを示す受信ＬＥＤ６０１、信号送信基地局として選択されていることを表示するＬＥＤ兼選択ボタンである送信選択ボタンＬＥＤ６０２、同じく信号受信基地局として選択されていることを表示するＬＥＤ兼選択ボタンである受信選択ボタンＬＥＤ６０３によって構成され、これらはシステムに設置されている基地局数と同数だけ設けられている。
表示部の動作としては、例えば、基地局１０４や屋外型基地局１０８が正常に動作している場合には図６（a）に示すように、常送状態になっている基地局１０４または屋外型基地局１０８の送信選択ボタンＬＥＤ６０２を点灯させる。逆に非常送状態である場合には送信選択ボタンＬＥＤ６０２を消灯させる。また、屋外型基地局１０８に停電が生じた場合には図６（b）に示すように、停電が生じた屋外型基地局１０８が常送状態であった場合には送信選択ボタンＬＥＤ６０２を点滅させ、非常送状態であった場合には送信選択ボタンＬＥＤ６０２を長周期点滅させることで各基地局１０４および屋外型基地局１０８の状態を表示する。ここで、表示部５０１−１と表示部５０１−２において表示が異なっているのは、例えば表示部５０１−１が設けてある操作部１０２−１が送信基地局として基地局１０８−１を選択しており、表示部５０１−２では操作卓１０２−２では基地局１０８−１が送信基地局としては選択していない場合に表示が異なるためである。 The display unit 501 provided in the management center 101 is provided on each console, for example, and is selected as a reception LED 601 indicating whether the base station is receiving a signal or a signal transmission base station. A transmission selection button LED602 which is an LED / selection button indicating that the signal is received, and a reception selection button LED603 which is an LED / selection button indicating that the signal reception base station is selected. These are installed in the system. There are as many base stations as there are.
As an operation of the display unit, for example, when the base station 104 or the outdoor base station 108 is operating normally, as shown in FIG. The transmission selection button LED 602 of the type base station 108 is turned on. On the contrary, when the emergency transmission state is set, the transmission selection button LED 602 is turned off. Further, when a power failure occurs in the outdoor type base station 108, as shown in FIG. 6B, the transmission selection button LED 602 blinks when the outdoor type base station 108 where the power failure occurs is in a normal transmission state. In the emergency transmission state, the state of each base station 104 and outdoor type base station 108 is displayed by blinking the transmission selection button LED 602 for a long period. Here, the display unit 501-1 and the display unit 501-2 display differently. For example, the operation unit 102-1 provided with the display unit 501-1 selects the base station 108-1 as the transmission base station. This is because the display on the display unit 501-2 is different when the base station 108-1 is not selected as the transmission base station on the console 102-2.

次に本発明における第２実施例について図２（b）、図５（b）を用いて説明する。図２（a）や図５（a）と同じ部分については同じ番号を付してある。また、表示部５０１の表示については第１実施例と同様であるため説明を省略する。
図２（b）において、屋外型基地局１０８には、図２（a）で示した各部の他に電源検知部２１０を設けてある。また、図５（b）において、管理センタ１０１内には各屋外型基地局に設けられている電源検知部２１０からの信号を受信して表示部５０１に表示させるための信号受信部５０２−１、５０２−２が設けられている。 Next, a second embodiment of the present invention will be described with reference to FIGS. 2 (b) and 5 (b). The same parts as those in FIGS. 2A and 5A are denoted by the same reference numerals. Further, since the display on the display unit 501 is the same as that in the first embodiment, the description thereof is omitted.
In FIG. 2 (b), the outdoor base station 108 is provided with a power supply detection unit 210 in addition to the components shown in FIG. 2 (a). Also, in FIG. 5B, a signal receiving unit 502-1 for receiving a signal from the power source detection unit 210 provided in each outdoor type base station and displaying it on the display unit 501 in the management center 101. , 502-2 are provided.

図５（a）において、例えば屋外型基地局１０８−１にて外部電源供給が停止した場合、屋外型基地局１０８では、外部電源接続部２０９からの電源供給がなくなると、電源検知部２１０で電源供給が停止されたことを検知することで、屋外型基地局１０８−１内の予備電源２０７に切替わり、さらに電源検知部２１０から無線部２０２内の制御部２０４を介して管理センタ１０１へと通知する。管理センタ１０１では電源供給停止の通知があったことを信号受信部５０２−１にて検知し、信号受信部５０２−１から管理センタ１０１内に設けられている表示部５０１にて電源供給停止の表示がなされる。
また、屋外型基地局１０８−１では予備電源２０７に切替ると第１実施例同様にバッテリーセービングを行う。例えば、屋外型基地局１０８−１が無線送信基地局として選択されていた場合、通常であれば常に電波を発信し、通話可能な状態（以下、常送状態）として動作しているが、予備電源に切替わることで電波を発射せず、通話不可能な状態（以下、非常送状態）に切替わる。また、このように予備電源に切替わっているときには、例えば操作卓１０２および切替装置１０３から屋外型基地局１０８−１に対し、通話が入ると常送となり、通話が終了すると、一定時間後に再度非常送となり、復電すると自動的に常送状態へ移行し通話可能となる。
ここで、基地局１０８−１ではバッテリーセービングの状態になったことを自身の通信エリア１０９内に位置する移動局１０５へ通知しても良く、移動局１０５より基地局１０８−１を介した通信を行う際に通知するようにしても良い。
また、電源検知部２１０から制御部２０４を介して管理センタ１０１へ通知すると記載したが、通知方法はどのようなものでも良く通知信号を送信しても良いし、所定の内容の電文を送信するようにしても良い。 In FIG. 5A, for example, when the external power supply is stopped at the outdoor base station 108-1, when the power supply from the external power supply connection unit 209 is stopped at the outdoor base station 108, the power detection unit 210 By detecting that the power supply has been stopped, the standby power supply 207 in the outdoor base station 108-1 is switched to, and further, the power supply detection unit 210 to the management center 101 via the control unit 204 in the wireless unit 202. To notify. In the management center 101, the signal receiving unit 502-1 detects that a power supply stop has been notified, and the display unit 501 provided in the management center 101 stops the power supply from the signal receiving unit 502-1. Display is made.
In addition, when the outdoor base station 108-1 is switched to the standby power source 207, battery saving is performed as in the first embodiment. For example, when outdoor type base station 108-1 is selected as a wireless transmission base station, radio waves are always transmitted normally, and it is operating in a state where communication is possible (hereinafter referred to as a normal transmission state). By switching to the power source, radio waves are not emitted and switching to a state where telephone conversation is impossible (hereinafter referred to as an emergency transmission state) is performed. In addition, when switching to the standby power source is performed as described above, for example, when a call is made from the console 102 and the switching device 103 to the outdoor type base station 108-1, a regular transmission is performed. It becomes emergency transmission, and when power is restored, it automatically shifts to the normal transmission state and can talk.
Here, the base station 108-1 may notify the mobile station 105 located in its own communication area 109 that the battery saving state has been established, and communication from the mobile station 105 via the base station 108-1. You may make it notify when performing.
In addition, although it has been described that the power detection unit 210 notifies the management center 101 via the control unit 204, any notification method may be used and a notification signal may be transmitted, or a telegram having a predetermined content may be transmitted. You may do it.

また、本発明のＳＣＰＣ方式による無線通信システムは各基地局に対して、上りと下りの搬送波を１波ずつ割り当てるものでも良く、１つの無線通信システムで上りと下りの搬送波１波ずつ割り当てるものでも良く、さらに１つの無線通信システムで上り下りの区別のない搬送波１波を割り当てるものでも良い。   In addition, the SCPC wireless communication system of the present invention may allocate one uplink and one downlink carrier to each base station or one uplink and one downlink carrier in one wireless communication system. It is also possible to assign one carrier wave with no distinction between uplink and downlink in one wireless communication system.

また、本実施例では屋外型基地局に停電が生じたことを検知すると、停電が生じた旨を通知する信号を管理センタに送信するとしたが、予め定めてある電文を管理センタへと送信することとしても良い。 Further, in this embodiment, when it is detected that a power failure has occurred in the outdoor base station, a signal notifying that a power failure has occurred is transmitted to the management center, but a predetermined telegram is transmitted to the management center. It's also good.

また、本発明はＳＣＰＣ方式による無線通信システムに実施を限定するものではなく、他の無線通信方式に使用しても良いことは言うまでもない。   In addition, the present invention is not limited to the SCPC wireless communication system, but may be used for other wireless communication methods.

以上のことから本発明の実施の形態によると、屋外型基地局等の内蔵蓄電池などの予備電源での動作を持ち合わせた無線装置において停電が生じたことを指令卓に通知する機能を有する事が可能となる。 From the above, according to the embodiment of the present invention, it is possible to have a function of notifying the command console that a power failure has occurred in a wireless device having an operation with a standby power source such as an internal storage battery of an outdoor base station or the like. It becomes possible.

また、本発明の実施の形態によると、屋外型基地局で停電が生じた場合、予備電源の有効時間が経過してから管理側が停電を知ることになるということを防ぎ、システムダウンを生じることなく早急な復旧作業を行うことが可能となる。   In addition, according to the embodiment of the present invention, when a power failure occurs in an outdoor base station, it is possible to prevent the management side from knowing the power failure after the effective time of the standby power source has elapsed, and to cause a system down. This makes it possible to perform quick recovery work.

さらに、本発明の実施の形態によると、所定の信号または電文を屋外型基地局から切替装置を経由して管理側へと通知することによって、指令卓にてそれに応じた制御を実行することが可能となる。   Furthermore, according to the embodiment of the present invention, a predetermined signal or telegram is notified from the outdoor type base station to the management side via the switching device, so that control according to the control signal can be executed on the command console. It becomes possible.

本発明の一実施例を示した無線通信システムの概略構成のブロック図。1 is a block diagram of a schematic configuration of a wireless communication system showing an embodiment of the present invention. 本発明における屋外型基地局の一実施例を示した概略構成のブロック図。The block diagram of the schematic structure which showed one Example of the outdoor type | mold base station in this invention. 屋外型基地局１０８の設置場所および設置方法について一例を示した図面。The drawing which showed an example about the installation place and installation method of the outdoor type | mold base station 108. FIG. ＳＣＰＣ方式による従来の無線通信システムの一例を示した図。The figure which showed an example of the conventional radio | wireless communications system by a SCPC system. 本発明の一実施例を示した無線通信システムの概略構成のブロック図。1 is a block diagram of a schematic configuration of a wireless communication system showing an embodiment of the present invention. 本発明におけるシステム内に設置されている基地局の状態を表示する表示部の一実施例を示した図。従来の緊急通報システムにおける管理部での受信動作を示す図である。The figure which showed one Example of the display part which displays the state of the base station installed in the system in this invention. It is a figure which shows the reception operation | movement in the management part in the conventional emergency call system.

符号の説明Explanation of symbols

１０１・・・管理センタ、
１０２・・・操作卓、
１０３・・・切替装置、
１０４・・・基地局、
１０５・・・移動局、
１０６、１０７・・・基地局１０４の通信エリア、
１０８・・・屋外型基地局、
１０９・・・屋外型基地局１０８の通信エリア、
２０１・・・アンテナ部、
２０２・・・無線部、
２０３・・・送受信部、
２０４・・・制御部、
２０５・・・電源部、
２０６・・・外部電源用Ｉ/Ｆ、
２０７・・・予備電源、
２０８・・・外部装置接続部
２０９・・・外部電源接続部、
２１０・・・電源検知部、
３０１・・・アンテナ、
３０２・・・立柱、
３０３・・・電源ライン、
３０４・・・データライン、
３０５・・・支持金具、
３０６・・・設置台、
３０７・・・支柱、
３０８・・・固定金具、
４０１・・・管理センタ、
４０２・・・操作卓、
４０３・・・切替装置、
４０４・・・基地局、
４０５・・・移動局、
４０６、４０７・・・通信エリア、
５０１・・・表示部、
５０２・・・信号受信部、
６０１・・・受信ＬＥＤ、
６０２・・・送信選択ボタンＬＥＤ、
６０３・・・受信選択ボタンＬＥＤ。
101 ... Management center,
102 ... console,
103 ... switching device,
104 ... base station,
105 ... Mobile station,
106, 107 ... communication area of the base station 104,
108: Outdoor type base station,
109 ... Communication area of the outdoor base station 108,
201 ... antenna part,
202 ... wireless unit,
203 ... transmitting / receiving unit,
204... Control unit,
205 ... Power supply unit,
206 ... I / F for external power supply,
207 ... Standby power supply,
208 ... External device connection unit 209 ... External power supply connection unit,
210 ... Power supply detection unit,
301 ... antenna,
302 ... vertical pole,
303 ... power line,
304 ... data line,
305 ... support bracket,
306 ... installation table,
307 ... posts,
308: Fixing bracket,
401 ... management center,
402 ... console,
403 ... switching device,
404 ... base station,
405: Mobile station,
406, 407 ... communication area,
501... Display unit,
502... Signal receiver,
601... Reception LED,
602 ... Transmission selection button LED,
603: Reception selection button LED.

Claims (2)

少なくとも１つの基地局と、移動局からなる無線通信システムにおいて、
前記基地局は、少なくともアンテナ部と、無線部と、予備電源を具備しており、
さらに前記基地局は、動作のための電源供給が停止したことを検知すると、電源供給先を前記予備電源に切り替えると共に、予め定められた通知先へ電源供給が停止したことを通知する、ことを特徴とした無線通信システム。
In a radio communication system comprising at least one base station and a mobile station,
The base station includes at least an antenna unit, a radio unit, and a standby power source,
Further, when the base station detects that the power supply for operation has stopped, the base station switches the power supply destination to the standby power source and notifies the predetermined notification destination that the power supply has stopped. A featured wireless communication system.
請求項１記載の無線通信システムにおいて、
前記基地局は、電源供給先を前記予備電源に切り替わったことを検知すると、予め定められていた機能を動作させ、消費する電力を低減するように動作させる、ことを特徴とした無線通信システム。
The wireless communication system according to claim 1, wherein
When the base station detects that the power supply destination has been switched to the standby power supply, the base station operates a predetermined function and operates to reduce power consumption.
JP2006209076A 2006-07-31 2006-07-31 Radio communication system Pending JP2008035430A (en)

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