JP2012114552A

JP2012114552A - Radio system

Info

Publication number: JP2012114552A
Application number: JP2010259927A
Authority: JP
Inventors: Junichi Shiraishi; 純一白石; Fumiaki Sato; 文明佐藤; Masaharu Yamashita; 正治山下; Akihiro Oka; 晃弘岡
Original assignee: Hitachi Kokusai Electric Inc
Current assignee: Hitachi Kokusai Electric Inc
Priority date: 2010-11-22
Filing date: 2010-11-22
Publication date: 2012-06-14

Abstract

PROBLEM TO BE SOLVED: To provide a radio system capable of monitoring abnormality while maintaining an operation state of a radio transmitting-receiving section and switching from an active system to a standby system having high reliability in the event of a failure of the active system.SOLUTION: A radio transmitting-receiving section 2 includes: a plurality of transmitting-receiving sections 4a to 4n that can be switched between an active system and a standby system for use; and transmitting-receiving section switching means 5 for selectively switching and connecting the transmitting-receiving sections 4a to 4n. The radio system includes: signal switching means 8 that can select one of the transmitting-receiving sections 4a to 4n in order to give a test signal for performing abnormality monitoring for each of the transmitting-receiving sections 4a to 4n, the test signal being generated at a test signal generation section 7, to the selected transmitting-receiving section; a transmitting-receiving section control unit 9 for controlling an active transmitting-receiving section 4a in order to form a test transmission line therein when the test signals generated at the test signal generation section 7 is given; an abnormality monitoring unit 10 for performing abnormality monitoring for each of the transmitting/receiving sections 4a to 4n using the test signal; and a maintenance control unit 11 for controlling the transmitting-receiving section switching means 5 in order to select a sound section as an active system based on a result of the abnormality monitoring.

Description

本発明は、基地局装置や移動端末内の送受信部における異常監視を行う無線システムに関する。 The present invention relates to a wireless system that performs abnormality monitoring in a transmission / reception unit in a base station apparatus or a mobile terminal.

従来の無線システムにおける基地局装置や移動端末内の無線送受信部では、この無線送受信部の受信レベルを検出し、この受信レベルを制御前レベルと比較して異常を監視する異常監視部を設けたものが知られている。また、この種の無線システムにおいて、現用基地局が故障した際、全ての予備系基地局に接続を切替えることなく、故障した現用基地局のみを予備系基地局に切替えるようにするために、現用基地局が故障したとき切替回路のエラー検出部に自基地局が故障したことを示す信号を送信し、エラー検出部では、現用基地局に対応する切替スイッチをＯＦＦにし、予備系基地局への切替スイッチをＯＮにすることで、予備系基地局との接続を行い、さらにエラー検出部では、切替回路の切替スイッチを現用基地局側から予備系基地局側にし、中継増幅器と予備系基地局の接続切替を行うように構成して、故障時の信頼性低下を防止した構成が知られている（例えば、特許文献１を参照）。 In a conventional radio system, a radio transmission / reception unit in a base station apparatus or mobile terminal is provided with an abnormality monitoring unit that detects the reception level of the radio transmission / reception unit and monitors the abnormality by comparing the reception level with a pre-control level. Things are known. In addition, in this type of radio system, when the working base station fails, the working base station is switched to only the working base station without switching the connection to all the working base stations. When the base station fails, a signal indicating that the own base station has failed is sent to the error detection unit of the switching circuit, and the error detection unit turns off the switch corresponding to the active base station, The switch is turned on to connect to the standby base station, and in the error detection unit, the switching switch of the switching circuit is changed from the active base station side to the standby base station side, and the relay amplifier and the standby base station There is known a configuration in which the connection switching is performed to prevent a decrease in reliability at the time of failure (for example, see Patent Document 1).

特開２００１−１０２９６９号公報JP 2001-102969 A

しかしながら、上述のような従来の無線システムでは、送受信部の故障発生を検出したときに装置全体を一時的停止する必要があったり、予備系を備えて現用基地局が故障した際に予備系を切替接続しても、この予備系に故障が発生していた場合、やはり装置全体を一時的に停止する必要があり、信頼性の向上には限界があった。 However, in the conventional wireless system as described above, it is necessary to temporarily stop the entire apparatus when the occurrence of a failure in the transmission / reception unit is detected, or the standby system is provided when the working base station fails with a standby system. Even if the switching connection is made, if a failure has occurred in the standby system, it is necessary to temporarily stop the entire apparatus, and there is a limit to improving the reliability.

本発明の目的は、無線送受信部の運用状態を保ちながら異常監視が可能で、かつ現用が故障したときに信頼性の高い予備用に切り替えることができるようにした無線システムを提供することにある。 An object of the present invention is to provide a wireless system that can monitor an abnormality while maintaining the operating state of a wireless transmission / reception unit and can switch to a highly reliable standby when the current service fails. .

本発明は上記目的を達成するために、アンテナに接続した無線送受信部を備えた無線システムにおいて、前記無線送受信部に、現用または予備用として切り替え使用可能な複数の送受信部と、該送受信部を選択的に切り替え接続する送受信部切替手段とを設け、予備用の前記各送受信部の異常監視を行うためのテスト信号を生成するテスト信号生成部と、該テスト信号生成部からのテスト信号を予備用の前記各送受信部に選択的に与えるよう切り替え可能な信号切替手段と、テスト信号を用いて予備用の前記各送受信部の異常監視をそれぞれ行う異常監視部と、この異常監視部による異常監視タイミングを制御すると共に、異常監視の結果に基づいて前記送受信部切替手段を切り替えて前記各送受信部の現用および予備用を制御するメンテナンス制御部とを設けたことを特徴とする。 In order to achieve the above object, the present invention provides a wireless system including a wireless transmission / reception unit connected to an antenna, wherein the wireless transmission / reception unit includes a plurality of transmission / reception units that can be switched for use as active or standby, and the transmission / reception unit. A transmission / reception unit switching means for selectively switching connection, a test signal generation unit for generating a test signal for monitoring the abnormality of each of the spare transmission / reception units, and a test signal from the test signal generation unit as a spare Signal switching means switchable to be selectively applied to each transmission / reception unit for use, an abnormality monitoring unit for monitoring each of the spare transmission / reception units using a test signal, and abnormality monitoring by the abnormality monitoring unit Maintainer that controls the timing and switches the transmission / reception unit switching means based on the result of abnormality monitoring to control the current and spare units of each transmission / reception unit Characterized by providing a scan control unit.

本発明の無線システムによれば、予備用として設けた送受信部は、定常の使用状態における所定のタイミングで異常監視を予め行うことができるようになり、現用の送受信部の故障発生時には予め健全であると判定した予備用の送受信部に切り替えることができるので、高い信頼性を維持しながら本装置を継続的に使用することができるようになる。 According to the wireless system of the present invention, the transmission / reception unit provided as a spare can be monitored in advance at a predetermined timing in a normal use state, and is healthy in advance when a failure occurs in the current transmission / reception unit. Since it is possible to switch to the spare transmission / reception unit determined to be present, the apparatus can be continuously used while maintaining high reliability.

本発明の一実施の形態による無線システムにおける基地局装置または移動端末装置の要部を示すブロック構成図である。It is a block block diagram which shows the principal part of the base station apparatus or mobile terminal device in the radio | wireless system by one Embodiment of this invention. 図１に示した無線システムにおける異常監視処理を示すフローチャートである。It is a flowchart which shows the abnormality monitoring process in the radio | wireless system shown in FIG.

以下、本発明の実施の形態を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の一実施の形態による無線システムにおける基地局装置または移動端末装置の要部を示すブロック構成図である。
本装置は、アンテナ１と、このアンテナ１に接続された無線送受信部２と、無線送受信部２にベースバンド信号を与えるベースバンド処理部３とを有した通常の主たる構成の他に、新たな構成を付加している。つまり、無線送受信部２内には、現用または予備用として切り替え使用可能な複数の送受信部４ａ〜４ｎと、切り替え信号を受けてアンテナ１と送受信部４ａ〜４ｎを選択的に切り替え接続する送受信部切替手段５とを設け、またベースバンド処理部３には、ベースバンド信号を生成して現用の送受信部に与えるデータ処理部６の他に、異常監視を行うためのテスト用ＰＮ（ＰｓｅｕｄｏＮｏｉｓｅ）信号等のテスト信号を生成するテスト信号生成部７と、このテストデータ生成部７からのテスト信号を任意の送受信部４ａ〜４ｎに与えるように切り替え接続可能な信号切替手段８とを設けている。テスト信号生成部７はベースバンド処理部３内に構成したが、この構成に限定するものではない。 FIG. 1 is a block configuration diagram showing a main part of a base station apparatus or mobile terminal apparatus in a radio system according to an embodiment of the present invention.
In addition to the normal main configuration including the antenna 1, the radio transmission / reception unit 2 connected to the antenna 1, and the baseband processing unit 3 that provides the baseband signal to the radio transmission / reception unit 2, the apparatus has a new configuration. A configuration is added. That is, in the wireless transmission / reception unit 2, a plurality of transmission / reception units 4a to 4n that can be switched for use as active or standby, and a transmission / reception unit that selectively switches and connects the antenna 1 and the transmission / reception units 4a to 4n in response to a switching signal. The baseband processing unit 3 includes a data processing unit 6 that generates a baseband signal and supplies the baseband signal to the current transmission / reception unit, as well as a test PN (Pseudo Noise) for monitoring anomalies. A test signal generation unit 7 that generates a test signal such as a signal, and a signal switching unit 8 that can be switched and connected so as to give the test signal from the test data generation unit 7 to any transmission / reception units 4a to 4n are provided. . Although the test signal generation unit 7 is configured in the baseband processing unit 3, it is not limited to this configuration.

さらに、ベースバンド処理部３から無線送受信部２内の特定の送受信部４ａ〜４ｎに対して異常監視のためのテスト信号を与えるときにテスト伝送路を形成するようにその送受信部４ａ〜４ｎを制御する送受信部制御部９と、テスト信号を用いてＢＥＲ（ＢｉｔＥｒｒｏｒＲａｔｅ）測定等を行って無線送受信部２内の各送受信部４ａ〜４ｎの異常監視を行う異常監視部１０と、この異常監視部１０による異常監視を実施するタイミングや頻度などを制御すると共に、異常監視の結果に基づいて送受信部４ａ〜４ｎの現用および予備用を切り替えるメンテナンス制御部１１とを設けている。 Further, when the test signal for abnormality monitoring is given from the baseband processing unit 3 to the specific transmission / reception units 4a to 4n in the wireless transmission / reception unit 2, the transmission / reception units 4a to 4n are formed so as to form test transmission paths. The transmission / reception unit control unit 9 to be controlled, the abnormality monitoring unit 10 that performs abnormality monitoring of the transmission / reception units 4a to 4n in the wireless transmission / reception unit 2 by performing BER (Bit Error Rate) measurement using a test signal, and the abnormality There is provided a maintenance control unit 11 that controls the timing and frequency of performing abnormality monitoring by the monitoring unit 10 and switches between the active and standby units of the transmission / reception units 4a to 4n based on the result of abnormality monitoring.

通常の運用では、送受信部切替手段５はアンテナ１と現用の送受信部４ａとを接続し、信号切替手段８は現用の送受信部４ａとデータ処理部６とを接続し、ベースバンド処理部３のデータ処理部６から生成されたベースバンド信号を無線送受信部２における現用の送受信部４ａに与え、送信無線周波数信号に変換した後、アンテナ１を介して無線送信しているものとして説明する。 In a normal operation, the transmission / reception unit switching means 5 connects the antenna 1 and the current transmission / reception unit 4a, and the signal switching unit 8 connects the current transmission / reception unit 4a and the data processing unit 6, and the baseband processing unit 3 A description will be given assuming that the baseband signal generated from the data processing unit 6 is given to the active transmission / reception unit 4a in the radio transmission / reception unit 2 and converted into a transmission radio frequency signal and then wirelessly transmitted via the antenna 1.

この通常の運用と並行して、異常監視部１０およびメンテナンス制御部１１は予備用の送受信部４ｂ〜４ｎの異常監視を行う。この異常監視処理を図２に示したフローチャートを用いて説明する。 In parallel with this normal operation, the abnormality monitoring unit 10 and the maintenance control unit 11 perform abnormality monitoring of the spare transmission / reception units 4b to 4n. This abnormality monitoring process will be described with reference to the flowchart shown in FIG.

異常監視を実施するタイミングはメンテナンス制御部１１によって管理され、ステップＳ１で予め設定した所定のタイミングになったことを検出すると、メンテナンス制御部１１は、ステップＳ３で異常監視対象が予備用か現用かを判定し、この場合は予備用であるからステップＳ４に進み、信号切替手段８に監視開始信号となる切り替え信号を与える。この切り替え信号を受けた信号切替手段８は、無線送受信部２の予備用の送受信部４ｂ〜４ｎの一つ、例えば送受信部４ｂとテスト信号生成部７を接続する。その後、ステップＳ５でテスト信号生成部７で生成したテスト信号をその送受信部４ｂに送信する。 The timing at which the abnormality monitoring is performed is managed by the maintenance control unit 11, and when it is detected that the predetermined timing set in advance in step S1 is reached, the maintenance control unit 11 determines whether the abnormality monitoring target is a spare or current one in step S3. In this case, since it is a spare, the process proceeds to step S4, and a switching signal serving as a monitoring start signal is given to the signal switching means 8. Upon receiving this switching signal, the signal switching means 8 connects one of the spare transmission / reception units 4b to 4n of the wireless transmission / reception unit 2, for example, the transmission / reception unit 4b and the test signal generation unit 7. Thereafter, in step S5, the test signal generated by the test signal generation unit 7 is transmitted to the transmission / reception unit 4b.

このテスト信号の送信時に、異常監視部１０はステップＳ６でその送受信部４ｂの内部で折り返される信号のＢＥＲ測定を行う。異常監視部１０は、このＢＥＲ測定後のステップＳ７で異常判定を行う。例えば、異常監視部１０は予め設定した閾値と測定したＢＥＲ値を比較し、その結果、閾値を下回ったり、あるいは、テスト信号に対するＥｒｒｏｒ頻度が高い場合、異常監視を行った送受信部４ｂの異常と断定し、その他の場合は正常と判定して、この判定結果をメンテナンス制御部１１に通知する。 At the time of transmission of this test signal, the abnormality monitoring unit 10 performs BER measurement of the signal returned inside the transmission / reception unit 4b in step S6. The abnormality monitoring unit 10 performs abnormality determination in step S7 after the BER measurement. For example, the abnormality monitoring unit 10 compares the threshold value set in advance with the measured BER value. As a result, if the error frequency is lower than the threshold value or the error frequency with respect to the test signal is high, the abnormality monitoring unit 10b In other cases, it is determined as normal, and the determination result is notified to the maintenance control unit 11.

メンテナンス制御部１１では、送受信部４ｂが故障であった場合、ステップＳ８で異常監視した送受信部４ｂが現用として接続されないように切替監視対象から外し、一方、送受信部４ｂが正常であった場合、送受信部４ｂが現用に変更して接続可能なものとして管理する。 In the maintenance control unit 11, when the transmission / reception unit 4b is out of order, the transmission / reception unit 4b that has been monitored for abnormality in step S8 is removed from the switching monitoring target so that it is not connected as active, while the transmission / reception unit 4b is normal, The transmission / reception unit 4b manages the connection by changing to the current one.

その後、メンテナンス制御部１１は、ステップＳ２で全ての予備用の送受信部４ｂ〜４ｎに対して異常監視を実施したかどうかを判定し、まだ完了していない場合は、次の予備用の送受信部に対してステップＳ３から同様の処理を繰り返す。各送受信部４ｂ〜４ｎの異常監視結果はメンテナンス制御部１１に送信され、万一、現用の送受信部４ａの故障発生時に、送受信部４ａに代えて健全な予備用の送受信部４ｂ〜４ｎのうちの一つを使用するものとして管理される。ステップＳで全ての予備用の送受信部４ｂ〜４ｎに対して異常監視を実施したと判定されたときは監視処理を終了する。 Thereafter, the maintenance control unit 11 determines whether or not abnormality monitoring has been performed for all the spare transmission / reception units 4b to 4n in step S2, and if not yet completed, the next spare transmission / reception unit In step S3, the same processing is repeated. The abnormality monitoring result of each of the transmission / reception units 4b to 4n is transmitted to the maintenance control unit 11, and in the event of a failure of the current transmission / reception unit 4a, out of the sound transmission / reception units 4b to 4n that are healthy instead of the transmission / reception unit 4a It is managed to use one of them. When it is determined in step S that abnormality monitoring has been performed on all spare transmission / reception units 4b to 4n, the monitoring process is terminated.

この説明から分かるように本無線システムは、無線送受信部２に、現用または予備用として切り替え使用可能な複数の送受信部４ａ〜４ｎと、これらの送受信部４ａ〜４ｎを選択的に切り替え接続する送受信部切替手段５とを設け、少なくとも予備用の複数の送受信部４ｂ〜４ｎの異常監視を行うためのテスト信号を生成するテスト信号生成部７と、このテスト信号生成部７からのテスト信号を予備用の各送受信部４ｂ〜４ｎに選択的に与えるよう切り替え可能な信号切替手段８と、テスト信号を用いて予備用の各送受信部４ｂ〜４ｎの異常監視をそれぞれ行う異常監視部１０と、この異常監視部１０による異常監視タイミングを制御すると共に、異常監視の結果に基づいて送受信部切替手段５を切り替えて予備用の各送受信部４ｂ〜４ｎのうち健全なものを現用に切り替え制御するメンテナンス制御部１１とを設けたため、予備用として設けた複数の送受信部４ｂ〜４ｎは、定常の使用状態における所定のタイミングで異常監視を予め行うことができるようになる。従って、現用の送受信部４ａの故障発生時には予め健全であると判定した送受信部４ｂ〜４ｎに切り替えることができるので、高い信頼性を維持しながら本装置を継続的に使用することができるようになる。 As can be seen from this description, the wireless system includes a plurality of transmission / reception units 4a to 4n that can be switched for use as active or standby, and transmission / reception that selectively connects these transmission / reception units 4a to 4n to the wireless transmission / reception unit 2. And a test signal generator 7 for generating a test signal for monitoring abnormality of at least a plurality of spare transmission / reception units 4b to 4n, and a test signal from the test signal generator 7 as a spare. The signal switching means 8 that can be switched to be selectively given to each of the transmission / reception units 4b to 4n, and the abnormality monitoring unit 10 that monitors each of the spare transmission / reception units 4b to 4n using the test signal, While controlling the abnormality monitoring timing by the abnormality monitoring unit 10, the transmission / reception unit switching means 5 is switched based on the result of the abnormality monitoring, and each of the spare transmission / reception units 4b to 4n is switched. Therefore, the plurality of transmission / reception units 4b to 4n provided as spares can perform abnormality monitoring in advance at a predetermined timing in a steady use state. It becomes like this. Therefore, when a failure occurs in the current transmission / reception unit 4a, it is possible to switch to the transmission / reception units 4b to 4n determined to be healthy in advance, so that the apparatus can be used continuously while maintaining high reliability. Become.

ここでは、予備用として設けた複数の送受信部４ｂ〜４ｎを備えた場合について説明したが、予備用として設けた一つの送受信部４ｂを有する場合でも、同様に適用することができ、予備用として設けた送受信部４ｂは、定常の使用状態における所定のタイミングで異常監視を予め行うことができるようになり、現用の送受信部４ａの故障発生時には予め健全であると判定した送受信部４ｂに切り替えることができるので、高い信頼性を維持しながら本装置を継続的に使用することができるようになる。 Here, a case where a plurality of transmission / reception units 4b to 4n provided as spares are provided has been described. However, even when a single transmission / reception unit 4b provided as a spare is provided, the same can be applied, and The provided transmission / reception unit 4b can perform abnormality monitoring in advance at a predetermined timing in a normal use state, and switches to the transmission / reception unit 4b determined to be healthy in advance when a failure occurs in the current transmission / reception unit 4a. Therefore, the apparatus can be continuously used while maintaining high reliability.

ところで、現用の送受信部４ａの異常監視は予備用の送受信部４ｂ〜４ｎとは異なる他の種々の方法で行うこともできるが、ここでは、上述した予備用の送受信部４ｂ〜４ｎにおける異常監視を利用して現用の送受信部４ａに対しても実施することができる。この場合、現用の送受信部４ａに対しては他の健全な予備の送受信部４ｂ〜４ｎの一つを現用に切り替えた後に、上述した予備の送受信部４ｂ〜４ｎと同じように実施しても良いし、また後述するように予備の送受信部４ｂ〜４ｎと同じタイミングまたは異なる独自のタイミングで実施しても良い。 By the way, the abnormality monitoring of the active transmission / reception unit 4a can be performed by various other methods different from the standby transmission / reception units 4b to 4n. Here, however, the abnormality monitoring in the above-described standby transmission / reception units 4b to 4n is performed. This can also be implemented for the current transmitting / receiving unit 4a. In this case, for the active transmission / reception unit 4a, after switching one of the other healthy spare transmission / reception units 4b to 4n to the current one, the same operation as the above-described spare transmission / reception units 4b to 4n may be performed. As will be described later, it may be performed at the same timing as the spare transmission / reception units 4b to 4n or at a different timing.

ステップＳ１で現用の送受信部４ａに対して異常監視を行うタイミングになると、メンテナンス制御部１１は、ステップＳ３で現用の異常監視であることを判定し、処理データが検出されない状態であることを検出した後、信号切替手段８に監視開始信号を与えると共に、送受信部制御部９に制御信号を与える。監視開始信号を受けた信号切替手段８は、ステップＳ９で送受信部４ａとテスト信号生成部７とを接続し、制御信号を受けた送受信部制御部９は、ステップＳ１０で送受信部４ａ内にテスト伝送路を形成する。例えば、テスト信号生成部７を信号発生器とし、送受信部制御部９からの制御信号を受けて現用の送受信部４ａ内の送信系から受信系へ、受信系から送信系に信号を折り返すことができるテスト伝送路を形成する。また、テスト信号生成部７が生成するテスト信号を受信感度レベルに設定し、その後、ステップＳ１１でテスト信号生成部７からのテスト信号を送受信部４ａに対して送信する。このときに異常監視部１０は、ステップＳ１２で上述した予備の送受信部４ｂ〜４ｎの場合と同様にＢＥＲ測定を実施する。 When it is time to perform abnormality monitoring on the current transmission / reception unit 4a in step S1, the maintenance control unit 11 determines in step S3 that it is the current abnormality monitoring and detects that processing data is not detected. After that, a monitoring start signal is given to the signal switching means 8 and a control signal is given to the transmission / reception unit control unit 9. The signal switching unit 8 that has received the monitoring start signal connects the transmission / reception unit 4a and the test signal generation unit 7 in step S9, and the transmission / reception unit control unit 9 that has received the control signal performs a test in the transmission / reception unit 4a in step S10. A transmission line is formed. For example, the test signal generation unit 7 may be a signal generator, and the control signal from the transmission / reception unit control unit 9 may be received to return a signal from the transmission system to the reception system in the current transmission / reception unit 4a and from the reception system to the transmission system. A test transmission line that can be formed is formed. Further, the test signal generated by the test signal generation unit 7 is set to the reception sensitivity level, and then the test signal from the test signal generation unit 7 is transmitted to the transmission / reception unit 4a in step S11. At this time, the abnormality monitoring unit 10 performs the BER measurement similarly to the case of the spare transmission / reception units 4b to 4n described in step S12.

異常監視部１０では、上述したＢＥＲ測定後のステップＳ１３で異常判定を行い、予め設定した閾値と測定したＢＥＲ値を比較し、その結果、閾値を下回っていたり、あるいは、テスト信号に対するＥｒｒｏｒ頻度が高い場合、異常監視を行った送受信部４ａの故障と判定する。この判定結果を受けたメンテナンス制御部１１は、ステップＳ１４で送受信部切替手段５を制御し、送受信部４ａをスタンバイ状態とすると共に、アクティブ状態にある健全な他の予備用の送受信部４ｂ〜４ｎが現用となるように切り替え接続する。 The abnormality monitoring unit 10 performs abnormality determination in step S13 after the above-described BER measurement, compares the preset threshold value with the measured BER value, and as a result, the error frequency is below the threshold value or the error frequency for the test signal is low. When it is high, it is determined that the failure of the transmission / reception unit 4a that has performed abnormality monitoring. Receiving this determination result, the maintenance control unit 11 controls the transmission / reception unit switching means 5 in step S14 to place the transmission / reception unit 4a in the standby state and other healthy spare transmission / reception units 4b to 4n in the active state. Switch and connect so that becomes active.

このようにして望ましい実施の形態による無線システムは、無線送受信部２に、現用または予備用として切り替え使用可能な複数の送受信部４ａ〜４ｎと、これらの送受信部４ａ〜４ｎを選択的に切り替え接続する送受信部切替手段５とを設け、各送受信部４ａ〜４ｎの異常監視を行うためのテスト信号を生成するテスト信号生成部７と、このテスト信号生成部７からのテスト信号を各送受信部４ａ〜４ｎに選択的に与えるよう切り替え可能な信号切替手段８と、テスト信号生成部７からのテスト信号を与えるときにテスト伝送路を形成するように現用の送受信部４ａを制御する送受信部制御部９と、テスト信号を用いて各送受信部４ａ〜４ｎの異常監視をそれぞれ行う異常監視部１０と、この異常監視部１０による異常監視タイミングを制御すると共に、異常監視の結果に基づいて送受信部切替手段５を切り替えて健全なものを現用とするように制御するメンテナンス制御部１１とを設けて構成している。 In this way, the wireless system according to the preferred embodiment selectively connects a plurality of transmission / reception units 4a to 4n that can be switched for use as active or standby, and these transmission / reception units 4a to 4n to the wireless transmission / reception unit 2. A transmission / reception unit switching means 5 for generating a test signal for monitoring an abnormality of each of the transmission / reception units 4a to 4n, and a test signal from the test signal generation unit 7 for each transmission / reception unit 4a. Signal switching means 8 that can be switched so as to be selectively applied to 4n, and a transmission / reception unit control unit that controls the current transmission / reception unit 4a so as to form a test transmission line when a test signal is supplied from the test signal generation unit 7 9, an abnormality monitoring unit 10 that monitors each of the transmission / reception units 4 a to 4 n using a test signal, and controls the abnormality monitoring timing by the abnormality monitoring unit 10. While, are configured by providing a maintenance control unit 11 controls to switch the transceiver switching means 5 and the working ones sound based on the result of abnormality monitoring.

このような無線システムによれば、予備用として設けた複数の送受信部４ｂ〜４ｎは、定常の使用状態における所定のタイミングで、異常監視を予め行うことができるようになることは勿論、現用の送受信部４ａに対しても同様の異常監視部１０等を使用して異常監視を行うことができ、現用の送受信部４ａにおける異常発生を検出したときには、予め異常監視を行っている予備用の無線送受信部４ｂ〜４ｎのうちの健全なものを使用して切り替えることができる。従って、通常の運用を止めることなく異常監視を行うことができ、しかも、故障が発生したとしても無線システムの運用に悪影響を与えず予備の送受信部４ｂ〜４ｎで運用を継続させることができる。 According to such a wireless system, the plurality of transmission / reception units 4b to 4n provided as spares can perform abnormality monitoring in advance at a predetermined timing in a steady use state. Abnormality monitoring can be performed for the transmission / reception unit 4a using the same abnormality monitoring unit 10 or the like. When an occurrence of an abnormality is detected in the current transmission / reception unit 4a, a spare wireless device that performs abnormality monitoring in advance is detected. It is possible to switch using a healthy one of the transmission / reception units 4b to 4n. Therefore, abnormality monitoring can be performed without stopping normal operation, and even if a failure occurs, the operation can be continued in the spare transmission / reception units 4b to 4n without adversely affecting the operation of the wireless system.

詳細な図示を省略しているが、異常検出部１０によって送受信部４ａ〜４ｎのいずれかの異常が検出された場合、メンテナンス制御部１１などによって管理者にこれを通知するようにすると良い。この通知を受けた管理者は、故障した送受信部の交換作業を行うが、故障検出が行われた時点で、送受信部切替手段５が切り替えられて故障した送受信部を予備扱いにしているため、送受信部を修理または交換して装置内に再接続すると、装置は即座に通常の動作を再開することになる。また交換後の送受信部に対しても、同様の異常監視を行った後に現用として使用すれることになるから、信頼性の高い無線システムとすることができる。 Although detailed illustration is omitted, when any abnormality of the transmission / reception units 4a to 4n is detected by the abnormality detection unit 10, the maintenance control unit 11 or the like may notify the administrator of this. The administrator who has received this notification performs the replacement work of the failed transmission / reception unit, but when the failure is detected, the transmission / reception unit switching means 5 is switched to preliminarily handle the failed transmission / reception unit. When the transceiver is repaired or replaced and reconnected within the device, the device will immediately resume normal operation. In addition, since the same transmission / reception unit after replacement is also used after the same abnormality monitoring, a highly reliable wireless system can be obtained.

本発明による無線送受信機は、図１に示した構成のものに限らず、その他の構成のものにも適用することができる。 The radio transceiver according to the present invention is not limited to the configuration shown in FIG. 1 but can be applied to other configurations.

１アンテナ
２無線送受信部
３ベースバンド処理部
４ａ〜４ｎ送受信部
５送受信部切替手段
６データ処理部
７テスト信号生成部
８信号切替手段
９送受信部制御部
１０異常監視部
１１メンテナンス制御部 DESCRIPTION OF SYMBOLS 1 Antenna 2 Wireless transmission / reception part 3 Baseband processing part 4a-4n Transmission / reception part 5 Transmission / reception part switching means 6 Data processing part 7 Test signal generation part 8 Signal switching means 9 Transmission / reception part control part 10 Abnormality monitoring part 11 Maintenance control part

Claims

In a wireless system including a wireless transmission / reception unit connected to an antenna, a plurality of transmission / reception units that can be switched to be used as active or standby, and transmission / reception unit switching means for selectively switching and connecting the transmission / reception units to the wireless transmission / reception unit A test signal generator for generating a test signal for monitoring the abnormality of each of the spare transmission / reception units, and selectively supplying the test signal from the test signal generation unit to each of the spare transmission / reception units The switchable signal switching means, the abnormality monitoring unit for monitoring each of the spare transmission / reception units using the test signal, and the abnormality monitoring timing by the abnormality monitoring unit are controlled and the result of the abnormality monitoring And a maintenance control unit for switching the transmission / reception unit switching means to control the current and spare units of each of the transmission / reception units. Wireless system.