JPH05103368A - Method for detecting fault of mobile radio communication system - Google Patents

Method for detecting fault of mobile radio communication system

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Publication number
JPH05103368A
JPH05103368A JP26347391A JP26347391A JPH05103368A JP H05103368 A JPH05103368 A JP H05103368A JP 26347391 A JP26347391 A JP 26347391A JP 26347391 A JP26347391 A JP 26347391A JP H05103368 A JPH05103368 A JP H05103368A
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signal
fault
level
system
radio
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JP26347391A
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Japanese (ja)
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Kunio Sasaki
邦夫 佐々木
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Matsushita Electric Ind Co Ltd
松下電器産業株式会社
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Abstract

PURPOSE:To automatically and quickly detect the fault of a mobile radio communication system when no answer signal is obtained from a base radio station in response to a test signal by transmitting a fault occurring signal and collectively detecting the fault. CONSTITUTION:Signals received by means of a receiving section 24 are supplied to an electric field detecting section 25 by which the level of the received electric field is detected. A comparator 27 compares the detected level of the received electric field with a reference level and outputs a comparison signal to an abnormality detector 28 when the detected level is lower than the reference level. When the output time to the detector 28 becomes longer than the set periods of a timer 1, 29, a transmission commanding signal is given to a signal transmitting section 23 and a test signal is transmitted to a base radio station. Then the answer signal from the base radio station is monitored and, when no answer signal is obtained, it is discriminated that a fault occurs in the transmitting system of the system and a fault occurring signal is transmitted to a line controller. Therefore, the fault of the system can be collectively detected automatically and quickly.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は、移動無線通信方式における専用制御チャネルの故障検出方法に関する。 The present invention relates to a failure detection method of the dedicated control channel in a mobile radio communication system.

【0002】 [0002]

【従来の技術】近年、自動車電話に代表される移動局の移動無線通信方式において、マルチチャネル・アクセス方式と称される通信方式が広く採用されてきている。 Recently, in mobile radio communication system of the mobile station represented by a mobile telephone, a multi-channel access method called communication method have been widely employed. この方式では複数の通話チャネル(S−ch)の他に、端末局である移動局の発着信接続制御を行なうための専用制御チャネル(C−ch)を有している。 Other multiple speech channels in the system (S-ch), and a dedicated control channel for performing the sending and receiving connection control of the mobile station is a terminal station (C-ch).

【0003】図3に従来の移動無線通信方式のシステム構成図を示す。 [0003] a system configuration diagram of a conventional mobile radio communication system in FIG. 図3において、1は自動車電話に代表される移動局、2は形成する無線ゾーンにおいて移動局1 3, first mobile station represented by a mobile telephone, the mobile station 1 in the radio zone 2 to form
と無線通信を行なう無線基地局である。 And a radio base station that performs wireless communication. この無線ゾーンの圏内には、複数の無線チャネルで通信可能な複数の移動局が存在する(図示せず)。 The radio zone are within the plurality of mobile stations that can communicate is present in a plurality of radio channels (not shown). 3は無線基地局2を有線回線で接続して収容する回線制御装置、4は回線制御装置3を有線回線で接続して収容する移動局用の回線交換装置、5は加入者回線により回線交換装置4を収容する電話交換局、6は加入者回線により電話交換局5に収容された一般加入電話機である。 3 line controller which accommodates and connects the radio base station 2 by wire line, 4 is circuit switching device for a mobile station accommodated by connecting a line controller 3 by wire line, 5 line exchange by a subscriber line telephone exchange which accommodates the device 4, 6 is a general subscriber telephone set accommodated in the telephone exchange 5 the subscriber line.

【0004】図3を参照して移動局1の発着信接続制御について説明する。 [0004] Referring to incoming and outgoing connection control of the mobile station 1 to FIG. 3 will be described. 通常、移動局1は待受け状態においては、専用制御チャネルの送信周波数に受信チャネルを合わせ、無線基地局2から送信される報知信号に同期して、自局に対する着信信号を待ち受けている。 Usually, the mobile station 1 is waiting state, move the reception channel to the transmission frequency of the dedicated control channel, in synchronization with the broadcast signal transmitted from the wireless base station 2 is waiting an incoming signal for the mobile station,. また、移動局1から発信する場合には、操作者がオフフックすることにより発信操作がなされ、専用制御チャネルの基地局受信チャネルで、発信信号を一定時間無線基地局2に送信する。 Further, in the case of originating from the mobile station 1, originating operation is performed by the operator to off-hook, the base station receiving channel of the dedicated control channel, and transmits the oscillation signal to a fixed time the radio base station 2. この発信信号は回線制御装置3に伝送されて復号され、回線交換装置4に伝送される。 This oscillation signal is decoded is transmitted to the line control unit 3, it is transmitted to the line switching device 4.

【0005】回線交換装置4は、この復号された発信信号を受信すると、空いている無線チャネルを移動局1の指定通話チャネルとして、応答信号の中にチャネル指定信号を含めて、回線制御装置3及び無線基地局2を介して、移動局1に送信する。 [0005] circuit switched device 4 receives the decoded oscillation signal, as designated speech channel of the mobile station 1 to the radio channel is free, including the channel designation signal in the response signal, the line controller 3 and via the radio base station 2, and transmits to the mobile station 1. 移動局1は、受信したこのチャネル指定信号に従って、指定された通話チャネルに無線チャネルを切り替えて、この指定通話チャネルでループチェック等の信号の授受を行なった後通話動作が可能となる。 Mobile station 1, according to the channel designation signal received, switches the radio channel to the specified traffic channel, call operation can be performed after performing the exchange of signals loop check, etc. In this specified speech channel.

【0006】このように、多くの通話チャネルを用いて通話を構成する移動通信方式では、専用制御チャネルで接続制御を行なうことにより、接続制御時間の短縮および無線周波数の効率的な運用が図られている。 [0006] Thus, in the mobile communication system constituting a call using a number of speech channels, by performing the connection control with dedicated control channel, efficient operation of shortening and a radio frequency connection control time is achieved ing.

【0007】 [0007]

【発明が解決しようとする課題】しかしながら上記従来の方式では、専用制御チャネルを固定的に使用しているために、無線基地局2、回線制御装置3及び回線交換装置4等の設備に万一故障が発生した場合には、無線基地局2の無線ゾーンに在圏する移動局は発着信ができなくなり、移動無線通信システムとして機能しなくなる。 In THE INVENTION to be solved problems, however the conventional method, due to the use of dedicated control channel in a fixed manner, the radio base station 2, any chance to the line control unit 3 and the circuit switching device 4 in capital If a failure occurs, the mobile stations located in the radio zone of the radio base station 2 can not sending and receiving, no longer functions as a mobile radio communication system.

【0008】従って、各装置に故障が発生した場合には、迅速にその故障を発見して、移動局及びシステムの運用者に警報を通報する必要がある。 Accordingly, when a failure occurs in the device, quickly discover the fault, it is necessary to report an alarm to the operator of the mobile station and the system. そのため故障検出方法として、無線基地局2の送信出力を常時監視することにより、故障の検出がなされていた。 As a fault detection method therefor, by constantly monitoring the transmission power of the radio base station 2, the detection of the failure has been made. しかしこの方法では無線基地局の送信系のみを監視しているため、受信系に故障が生じた場合には、移動局のユーザからの通報によるしか故障検出ができないという問題があった。 However, since the monitors only the transmission system of the radio base station in this way, when a fault occurs in the receiving system has a problem that can only be a failure detection by report from the user of the mobile station.

【0009】この対策として、試験用固定局を無線基地局2内に設置して、各移動局の発着信に支障を与えないように、数分ないし数時間毎の一定周期で自動的に試験信号を無線基地局2に送出して、故障検出を行なう方法が知られている。 [0009] As a countermeasure, by installing a test fixture stations in the radio base station 2, so as not to interfere with incoming and outgoing calls of each mobile station, automatically tested at a constant period of every few minutes to several hours by sending a signal to the radio base station 2, a method for performing failure detection is known.

【0010】ところが、試験用固定局を無線基地局2内に設置して故障を検出する方法では、故障検出のための試験信号を発生する周期を長くすると、故障の発見が遅れることになり、逆にこの周期を短くすると、無線ゾーンに在圏する各移動局の発信信号と衝突する確率が高くなり、通信の妨害やトラヒックデータの記録が増大する等の新たな問題が発生することになる。 [0010] However, in the method for detecting a failure by installing a test fixture stations in the radio base station 2, the longer the period for generating a test signal for fault detection, will be found a failure is delayed, the shorter this period Conversely, the higher the probability of collision with transmitting signals of each mobile station in a wireless zone, a new problem will occur such that the recording of the interference or traffic data communications increases .

【0011】本発明は上記従来の問題を解決するものであり、各移動局の発着呼の動作に影響を与えることなく、専用制御チャネルに関するシステムの故障を自動的にかつ速やかにしかも総合的に検出する故障検出方法を提供することを目的とする。 [0011] The present invention has been made to solve the above conventional problems, without affecting the operation of incoming and outgoing call of each mobile station, automatically and quickly yet comprehensively the failure system about the dedicated control channel and to provide a failure detection method for detecting.

【0012】 [0012]

【課題を解決するための手段】本発明は上記目的を達成するために、移動局と同様に発着呼制御を行なうことができ、また、試験のための発着信を行なうことができる試験用固定局を備え、この試験用固定局内に、無線基地局の送信電波の電界強度を検出する手段と、無線基地局からの報知信号を復調して、その内容を監視する手段とを有する。 Means for Solving the Problems The present invention to achieve the above object, can be performed similarly incoming and outgoing call control and mobile station, also fixing test can be carried out sending and receiving for the test with a station, in the test fixture station comprises means for detecting the field intensity of transmission radio wave of the radio base station, demodulates the broadcast signal from the wireless base station, and means for monitoring the contents.

【0013】 [0013]

【作用】上記手段により、無線基地局からの電界強度が一定期間低下又は断となった場合、あるいは一定期間継続して報知信号に発着呼のためのチャネル指定信号が含まれず、単なる標識信号の連続となった場合に、試験用信号を発して、無線基地局の送受信動作、回線制御装置の動作、回線交換装置の動作及び各装置間の接続線路等の故障検出を自動的にかつ迅速にしかも総合的に行なうことができる。 By the action above means, when the electric field intensity from the radio base station becomes a predetermined period decreases, or cross, or a period of time continue to not include the channel designation signal for incoming and outgoing call in the broadcast signal, the mere beacon when it becomes a continuous, emits a test signal, transmitting and receiving operations of the radio base station, the operation of the line control device, the operation and fault detection of the connection line or the like between each device line switching device automatically and quickly in addition it can be carried out in a comprehensive manner.

【0014】 [0014]

【実施例】以下、図1及び図2を参照して、本発明による故障検出方法の一実施例について説明する。 EXAMPLES Hereinafter, with reference to FIGS. 1 and 2, a description will be given of an embodiment of a fault detection method according to the present invention. 図1は本発明による故障検出方法を用いた移動通信システムの構成図である。 Figure 1 is a block diagram of a mobile communication system using a fault detection method according to the present invention. この図において、無線基地局2には共用器2a、専用制御チャネル送信部2b及び専用制御チャネル受信部2cの他に、本発明による故障検出方法を行なう試験手段として試験用固定局2dが備えられている。 In this figure, the radio base station 2 duplexer 2a in addition to the dedicated control channel transmission unit 2b and dedicated control channel receiving unit 2c, the test reference station 2d provided as testing means for performing a fault detection method according to the invention ing.
2e及び2fはそれぞれ共用器2a及び試験用固定局のアンテナである。 2e and 2f is an antenna of each duplexer 2a and testing fixed station. また、7はシステム全体の運用を監視する運用監視装置であり、回線制御装置3及び回線交換装置4は図1と同じ構成となっている。 Further, 7 is operation monitoring apparatus for monitoring the operation of the entire system, the line control unit 3 and the circuit switching device 4 has the same structure as FIG.

【0015】図2は試験用固定局2dの内部ブロック図である。 [0015] Figure 2 is an internal block diagram of a test fixture station 2d. 図2において、21は送受信を切り替える共用器、22は試験信号を送信する送信部、23は試験信号を生成して送信部22に供給する信号発信部、24は無線基地局2の専用制御チャネルを受信する受信部である。 2, 21 is a duplexer for switching the transceiver, transmitter 22 for transmitting a test signal, generates a test signal signaling unit supplies the transmitting section 22 23, 24 dedicated control channel of the radio base station 2 a receiving unit that receives. 25は受信部24から得られる専用制御チャネルの電界強度を検出する電界検出部、26は受信部24から得られる専用制御チャネルの報知信号を復号してチャネル指定信号の有無を検出する信号復号部、27は電界検出部25からの受信電界のレベルを基準レベルと比較する比較器である。 25 electric field detector for detecting the field strength of the dedicated control channel obtained from the receiving unit 24, 26 is a signal decoding unit for detecting the presence or absence of decoding to channel specifying signal a broadcast signal of a dedicated control channel obtained from the receiving unit 24 , 27 is a comparator for comparing the level of the received electric field from the electric field detection unit 25 with a reference level. また、28はシステムの故障を検出したとき、回線制御装置3に障害発生信号を送信するとともに、信号発信部23に与える発信指令信号を生成する異常検出器であり、マイクロプロセッサ等により構成されている。 Further, when 28 detects a failure of the system, sends a failure signal to the line control unit 3, a failure detection device for generating a transmission command signal to be supplied to the signal generation unit 23, is constituted by a microprocessor or the like there. 29及び30はそれぞれ第1及び第2の周期の時間を設定して、異常検出器28にタイマ割り込みをかけるタイマ等の設定手段である。 29 and 30 are each set time of the first and second periods, a setting means such as a timer imposing a timer interrupt abnormality detector 28.

【0016】次に、図2の構成の動作について説明する。 [0016] Next, the operation of the arrangement of FIG. 試験用固定局2dは、無線基地局3の専用制御チャネル送信部2bから、共用器21及びアンテナ2eを経て到来する電波を、アンテナ2f及び共用器21を介して受信部24で常時受信している。 Test fixed station 2d is a dedicated control channel transmission unit 2b of the radio base station 3, the radio waves coming through the duplexer 21 and the antenna 2e, and continuously receiving by the receiver 24 via the antenna 2f and duplexer 21 there. この受信信号は電界検出部25に供給されて、受信電界レベルが検出される。 The received signal is supplied to the electric field detection unit 25, the reception electric field level is detected. 検出された受信電界レベルは比較器27において基準レベルと比較され、受信電界レベルが基準レベルより大きいときには、「0」の比較信号を、基準レベル以下であるときには「1」の比較信号を異常検出器28に出力する。 Detected received electric field level is compared with the reference level in the comparator 27, when the received electric field level is higher than the reference level, the comparison signal "0", when it is the reference level or less is a comparison signal "1" abnormality detection and outputs it to the vessel 28. 異常検出器は、比較器27からの「1」の比較信号の継続時間がタイマ1で設定された第1の周期よりも長いときには、信号発信部23に発信指令信号を与える。 Abnormality detector, the duration of the comparison signal "1" from the comparator 27 is at longer than the first period set by the timer 1 gives a transmission command signal to the signal generation unit 23. この発信指令信号により試験信号が無線基地局2に送信される。 Test signal by the transmission command signal is transmitted to the radio base station 2. その後、無線基地局からの応答信号の有無を監視して、応答信号が得られないときはシステムの送信系に故障が発生したと判断して、回線制御装置3に障害発生信号を送信する。 Then, by monitoring the presence or absence of a response signal from the radio base station, when the response signal is not obtained, it is judged that a failure in the transmission system of the system has occurred, it sends a failure signal to the line controller 3.

【0017】また、受信部24からの受信信号は、信号復号部26にも供給されて復号され復号信号が生成される。 Further, the received signal from the receiving unit 24, the decoded signal is decoded also supplied to the signal decoding unit 26 is generated. 無線基地局2において正常な接続制御がなされている場合には、移動局からの発呼を受信して応答信号が発せられるので、復号信号にチャネル指定信号が含まれる等の変化が生じることになる。 When the radio base station 2 has been made successful connection control, the response signal is received a call from the mobile station is issued, that changes such including the channel designation signal to the decoded signal is generated Become. 一方、正常な接続制御がなされていない場合には、システムの受信系のみに故障がある場合でも、復号信号は単なる標識信号(無変調の搬送波)の連続となり変化は生じない。 On the other hand, if it is not made a successful connection control, even if there is a failure only in the reception system of the system, the decoded signal does not occur change becomes continuous merely beacon (unmodulated carrier). 信号復号部26 Signal decoding unit 26
でこのチャネル指定信号の有無を検出して、チャネル指定信号が存在するときは「0」の信号を、存在しないときは「1」の信号を異常検出器28に出力する。 In detecting the presence or absence of the channel designation signal, a signal of "0" when the channel designation signal is present, when no outputs a signal "1" to the anomaly detector 28. 異常検出器28では、「1」の信号の継続時間がタイマ2で設定された第2の周期よりも長い場合には、信号発信部2 The abnormality detector 28, when the duration of the signal of "1" is longer than the second period set by the timer 2, the signal generation unit 2
3に発信指令信号を与えて、無線基地局からの応答信号の有無を監視し、応答信号が得られないときはシステムの受信系及び又は送信系に故障が発生したと判断して、 3 gives a transmission command signal to monitor the presence or absence of a response signal from the radio base station, when the response signal is not obtained, it is judged that a failure in the reception system and or the transmission system of the system has occurred,
回線制御装置3に障害発生信号を送信する。 Transmitting a failure signal to the line controller 3.

【0018】 [0018]

【発明の効果】本発明は上記実施例で明らかなように、 According to the present invention As it is clear from the above examples,
各移動局の発着信呼接続制御に影響を与えることなく、 Without affecting the incoming and outgoing call connection control for each mobile station,
専用制御チャネルに関するシステムの故障を自動的にかつ速やかに、総合的に検出できる優れた効果がある。 Automatically and promptly fault system relating dedicated control channel, there is an excellent effect that can comprehensively detected.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明による故障検出方法を用いた移動無線通信システムの構成図 Figure 1 is a configuration diagram of a mobile radio communication system using a fault detection method according to the invention

【図2】図1における試験用固定局のブロック図 2 is a block diagram of a test fixture station in FIG. 1

【図3】従来の移動無線通信システムの構成図 Figure 3 is a configuration diagram of a conventional mobile radio communication system

【符号の説明】 DESCRIPTION OF SYMBOLS

1 移動局 2 無線基地局 2a、21 共用器 2b 専用制御チャネル送信部 2c 通話チャネル受信部 2d 試験用固定局 2e、2f アンテナ 3 回線制御装置 4 回線交換装置 5 電話交換局 6 固定局 7 運用監視装置 22 送信部 23 信号発信部 24 受信部 25 電界検出部 26 信号復号部 27 比較器 28 異常検出部 29、30 タイマ 1 mobile station 2 radio base station 2a, 21 a duplexer 2b dedicated control channel transmission unit 2c traffic channel receiving unit 2d test reference station 2e, 2f antenna 3 line control unit 4 line switching apparatus 5 telephone exchange 6 fixed station 7 operational monitoring 22 transmitter 23 signal transmitter 24 receiver 25 field detector 26 signal decoding unit 27 comparator 28 the abnormality detecting unit 29 timer

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】無線ゾーンにおいて移動局と無線により通信をなす無線基地局と、この無線基地局を収容する回線制御装置と、この回線制御装置を収容して回線の交換を行なう回線交換装置とを備えた移動無線通信方式の故障検出方法であって、 前記無線基地局から送信される専用制御チャネルの受信電界のレベルを検出する電界検出手段と、前記レベルが基準レベル以下であるとき所定の比較信号を生成する比較手段と、発信指令信号に応じて前記無線基地局に送信する試験信号を生成する信号発信手段と、前記発信指令信号を発生するとともに前記回線制御装置に障害発生信号を送信する異常検出手段と含む試験手段を有し、 前記異常検出手段は、前記所定の比較信号の継続時間が所定の周期より長いときに前記発信指令信号を前記信号 And 1. A radio base station forming a communication by the mobile station and a radio in the radio zone, and a line controller for accommodating the radio base station, a circuit switched device to exchange line accommodates this line control device a fault detection method for a mobile radio communication system and a field detection means for detecting the level of a received electric field of the dedicated control channel transmitted from the radio base station, a predetermined time the level is a reference level or less transmitting a comparing means for generating a comparison signal, a signal transmitter for generating a test signal to be transmitted to the radio base station in response to the transmission command signal, a failure occurrence signal to said line controller together with generating the transmission command signal abnormality detecting means includes a testing means including a, the abnormality detecting means, the signal the transmission command signal when the duration of the predetermined comparison signal is longer than a predetermined period of 信手段に与え、前記無線基地局から前記試験信号に応じた応答信号が得られないときに前記障害発生信号を送信することを特徴とする移動無線通信方式の故障検出方法。 It is given to the signal unit, the fault detection method for a mobile radio communication system and transmits the failure occurrence signal when the response signal corresponding to the test signal from the radio base station can not be obtained.
  2. 【請求項2】無線ゾーンにおいて移動局と無線により通信をなす無線基地局と、この無線基地局を収容する回線制御装置と、この回線制御装置を収容して回線の交換を行なう回線交換装置とを備えた移動無線通信方式の故障検出方法であって、 前記無線基地局から送信される専用制御チャネルの受信信号を復号して前記移動局に通話チャネルの指定を示すチャネル指定信号の有無を検出してこのチャネル指定信号が無いときに所定の信号を生成する信号復号手段と、 2. A radio base station forming a communication by the mobile station and a radio in the radio zone, and a line controller for accommodating the radio base station, a circuit switched device to exchange line accommodates this line control device a fault detection method for a mobile radio communication system having a, detects the presence or absence of a received signal decoded by the channel designation signal indicative of the specified speech channel to the mobile station of a dedicated control channel transmitted from the radio base station a signal decoding means for generating a predetermined signal when the channel designation signal is not in,
    発信指令信号に応じて前記無線基地局に送信する試験信号を生成する信号発信手段と、前記発信指令信号を発生するとともに前記回線制御装置に障害発生信号を送信する異常検出手段と含む試験手段を有し、 前記異常検出手段は、前記所定の比較信号の継続時間が所定の周期より長いときに前記発信指令信号を前記信号発信手段に与え、前記無線基地局から前記試験信号に応じた応答信号が得られないときに前記障害発生信号を送信することを特徴とする移動無線通信方式の故障検出方法。 A signal transmitter for generating a test signal to be transmitted to the radio base station in response to the transmission command signal, a test means including an abnormality detecting means for transmitting a failure signal to said line controller together with generating the transmission command signal a, the abnormality detecting means, the duration of the predetermined comparison signal the transmission command signal when longer than a predetermined period applied to the signal transmitter, the response signal corresponding to the test signal from the radio base station fault detection method for a mobile radio communication system and transmits the failure occurrence signal when can not be obtained.
  3. 【請求項3】無線ゾーンにおいて移動局と無線により通信をなす無線基地局と、この無線基地局を収容する回線制御装置と、この回線制御装置を収容して回線の交換を行なう回線交換装置とを備えた移動無線通信方式の故障検出方法であって、 前記無線基地局から送信される専用制御チャネルの受信電界のレベルを検出する電界検出手段と、前記レベルが基準レベル以下であるとき第1の信号を生成する比較手段と、前記無線基地局から送信される専用制御チャネルの受信信号を復号して前記移動局に通話チャネルの指定を示すチャネル指定信号の有無を検出してこのチャネル指定信号が無いときに第2の信号を生成する信号復号手段と、発信指令信号に応じて前記無線基地局に送信する試験信号を生成する信号発信手段と、前記発信指令信 3. A wireless base station constituting the communication by the mobile station and a radio in the radio zone, and a line controller for accommodating the radio base station, a circuit switched device to exchange line accommodates this line control device a fault detection method for a mobile radio communication system having a first and when the electric field detection means for detecting the level of a received electric field of the dedicated control channel transmitted from the radio base station, wherein the level is the reference level or less comparison means and, the channel designation signal by detecting the presence or absence of a channel designation signal indicating the designation of the received signal decoded by the speech channel to the mobile station of a dedicated control channel transmitted from the radio base station for generating a signal a signal decoding means for generating a second signal when there is no, and the signal transmitter for generating a test signal to be transmitted to the radio base station in response to the transmission command signal, the transmission command signal 号を発生するとともに前記回線制御装置に障害発生信号を送信する異常検出手段と、第1及び第2の周期を設定する設定手段とを含む試験手段を有し、 前記異常検出手段は、前記第1又は第2の信号の継続時間が前記第1又は第2の周期より長いときに前記発信指令信号を前記信号発信手段に与え、前記無線基地局から前記試験信号に応じた応答信号が得られないときに前記障害発生信号を送信することを特徴とする移動無線通信方式における故障検出方法。 And abnormality detecting means for transmitting a failure signal to said line controller together generates No., has a test means including setting means for setting the first and second periods, the abnormality detecting means, the second the transmission command signal when the duration of the first or second signal is longer than the first or second period given to the signal transmitter, the response signal corresponding to the test signal from the radio base station is obtained fault detecting method in a mobile radio communication system and transmits the failure occurrence signal when no.
JP26347391A 1991-10-11 1991-10-11 Method for detecting fault of mobile radio communication system Pending JPH05103368A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26347391A JPH05103368A (en) 1991-10-11 1991-10-11 Method for detecting fault of mobile radio communication system

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Application Number Priority Date Filing Date Title
JP26347391A JPH05103368A (en) 1991-10-11 1991-10-11 Method for detecting fault of mobile radio communication system

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JPH05103368A true true JPH05103368A (en) 1993-04-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2381159A (en) * 2001-10-17 2003-04-23 Motorola Inc Detecting interference in a downlink communication channel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5778237A (en) * 1980-10-31 1982-05-15 Nec Corp Fault detection system for control channel of radio telephone set
JPS57178441A (en) * 1981-04-24 1982-11-02 Nec Corp Fault detection system of mobile radio communication system
JPH02303237A (en) * 1989-05-17 1990-12-17 Toshiba Corp Radio telephone system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5778237A (en) * 1980-10-31 1982-05-15 Nec Corp Fault detection system for control channel of radio telephone set
JPS57178441A (en) * 1981-04-24 1982-11-02 Nec Corp Fault detection system of mobile radio communication system
JPH02303237A (en) * 1989-05-17 1990-12-17 Toshiba Corp Radio telephone system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2381159A (en) * 2001-10-17 2003-04-23 Motorola Inc Detecting interference in a downlink communication channel
GB2381159B (en) * 2001-10-17 2004-02-18 Motorola Inc Transceivers and method for use in radio communications

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