JP2667406B2 - Wireless telephone system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Industrial application field) The present invention relates to a radio telephone system used in various offices and the like. (Prior Art) In recent years, a wireless communication device has a plurality of wireless connection devices and a wireless line control device that controls the wireless connection device. A wireless telephone system which can be connected via a wireless telephone and can receive a call service by the wireless telephone has been developed. In such a wireless telephone system, in the conventional single wireless telephone system, since there is only one wireless connection device, a range in which the wireless telephone can be used has a radius around the wireless connection device.
In contrast to the zone within a circle of about 30m, wireless telephones can be used in each zone of multiple wireless connection devices, and wireless telephones can be used anywhere in business offices, etc. Can be As described above, in a wireless telephone system having a plurality of wireless connection devices, the wireless connection device has an important function for connecting a wired line and a wireless line, which causes a failure. In such a case, it is necessary to detect the occurrence of a failure in the wireless channel control device and promptly perform system reconfiguration, an alarm to an operator, and the like. (Problems to be Solved by the Invention) According to the wireless telephone system as described above, the wireless connection device has an important function for connecting the wired line and the wireless line, It is necessary to detect the occurrence of a fault in the line control device and to promptly reconfigure the system, alert the operator, and the like. The present invention has been made in view of the demand for such a conventional wireless telephone system, and has as its object to detect the occurrence of a failure in a wireless connection device by a wireless line control device, reconfigure the system, and issue an alarm to an operator. To provide a wireless telephone system capable of performing such operations quickly. [Structure of the Invention] (Means for Solving Problems) The present invention relates to a wireless connection device for performing wireless communication with a wireless telephone within a zone of a predetermined area, and a line connected to an exchange. And a wireless line control device that connects the wireless connection device with the wireless connection device to control the line, and a polarity inversion generation unit that inverts the polarity of a line reaching the wireless connection device to the wireless line control device. And transmits information instructing the wireless connection device to diagnose a communication failure due to the wireless line by using the polarity inversion by the polarity inversion unit, and performs a predetermined process based on information returned from the wireless connection device. The wireless connection device has a DC loop opening / closing circuit for opening / closing a DC loop of a line reaching the wireless line control device, and the polarity instructing a diagnosis. According to the information from the switching, the connection device itself diagnoses the failure or the communication failure of the wireless line due to the facing operation with the predetermined wireless telephone, and the information of the diagnosis result is used by the opening / closing of the DC loop by the DC loop opening / closing circuit. Diagnosis / return means for returning to the wireless line control device is provided. (Operation) According to the above configuration, information instructing the wireless connection device to diagnose a communication failure by the wireless line is transmitted using the polarity inversion by the polarity inversion unit, and the wireless connection device transmits the information based on the polarity inversion instructing the diagnosis. Diagnosis of the failure of the dyeing device itself or the communication failure of the wireless line due to opposition to the predetermined wireless telephone according to the information, and the information of the diagnosis result is used to control the wireless line by opening and closing the DC loop by the DC loop opening and closing circuit. When returned to the device, the wireless line control device performs a predetermined process based on the information returned from the wireless connection device. Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram of one embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a wireless channel control device. The radio network controller 1, a plurality (here three) the station line circuits 2 ₁ to 2 ₃ is provided, the office line circuit 2 ₁ to 2 _3, Tsugaru curve 3 ₁ to unillustrated switch transmitting and receiving voice signals between the 3 ₃ and the switch circuit 4. The radio in the line control unit 1, a plurality (here, three) line circuit 5 ₁ to 5 ₃ are provided, the line circuit
5 ₁ to 5 ₃ switching circuit 4, in addition to transmitting and receiving audio signals to and from the wireless connection device ₆₁ through _3, it sends and receives control information to and from the wireless connection device ₆₁ through _3. Wireless connection device ₆₁ through _3, the wireless telephone 8 _{1-8 3} in zone 7 _{1-7 3} having a predetermined size
And can be connected by a wireless line. The switch circuit 4 is connected to a central control device 10 that controls the wireless line control device 1 and a main storage device 11 that stores programs and the like used by the central control device 10. In the radio telephone system, when a calling request from the wireless telephone 8 _1, information for outbound requests are sent via the wireless connection device ₆₁ to the line circuit 5 _1, given from here to the central control unit 10. Therefore, the central control unit 10 connects the office line circuit 2 ₁ and the line circuit 5 ₁ controls the switch circuit 4. Thus, to allow the dial to the exchange through the office line 3 ₁ corresponding thereto from the wireless telephone 8 _1. Further, when there is an incoming call to the office line circuit 2 _1, for example, sent to the wireless telephone 8 ₁ ringing signal via the wireless connection device ₆₁ controls the line circuit 5 _1, calls the radio telephone 8 _1. If you answer the wireless telephone 8 _1, switching circuit 4 is controlled by the central control unit 10,
And the office line circuit 2 ₁ and the line circuit 5 ₁ is connected, the wireless telephone 8 ₁
You can talk on. Such radio telephone radio line circuit of the line control device 1 5 ₁ to 5 ₃ of the system, the polarity inversion generator 21 ₁ to 21 _3, the processing means including a response signal detection unit 22 ₁ to 22 ₃ 20 ₁ to 20 ₃ is provided, the wireless connection device ₆₁ through _3, the polarity inversion detection circuit 31 _1-3
1 ₃ , fault diagnosis unit 32 _{1 to} 32 ₃ , DC loop switching circuit 33 _{1 to} 33 ₃
Diagnostic-returning means 301 _{to 303} consisting of are provided. Function processing means 20 ₁ to 20 _3, the function of diagnosis and returning means 30 ₁ to 30 _3, respectively, so identical, the processing means 20 _1, diagnosis and returning means 3
Only 0 ₁ will be described. In the case of failure diagnosis, the polarity reversal generation unit 21 ₁ reverses the polarity of the line from the line circuit 5 ₁ to the wireless connection device 6 ₁ . The polarity inversion detection circuit 31 ₁ detects a polarity inversion starts the failure diagnosis unit 32 _1. Fault diagnosis unit 32 _1, for example, folded state of the radio channel create a (radio waves sent from its own wireless connection device _61, a state of receiving at its wireless connection device _61), (folded state, the test There is also a method of realizing with an actual wireless line in correspondence with a wireless telephone for use.) A loop check to determine whether or not a transmitted radio wave is received, or a voltage check to determine whether or not a radio wave of a predetermined level is received. Do. Fault diagnosis unit 32 ₁ whether these checks are successful, transmitting the DC loop closing circuit 33 _1. Then, the DC loop switching circuit 33 ₁
Closes the DC loop if the check ends normally, and leaves the DC loop open if the check ends abnormally. After the polarity reversal generator 21 ₁ reverses the polarity, the response signal detector 22 ₁ monitors the DC loop current, detects the DC loop current, and sends the result to the central controller 10. The central control device 10 and the main storage device 11 are processing means
Constitute a part of 20 ₁ to 20 _3. The operation of the radio line controller 1 in the radio telephone system as described above is shown in the flowchart of FIG.
Operation of the wireless connection device ₆₁ side is shown in the flowchart of FIG. 3. The operation will be described below with reference to these figures. First, when the failure diagnosis operation starts (for example, the start may be instructed by an operator inputting data to the radio network controller 1, or the central controller 10 may interrupt the timer by an unillustrated timer). or by receiving.), the central control unit 10 of the radio network controller 1 controls the polarity inversion generating unit 21 _1, by causing the polarity reversal, the wireless connection device (in FIG. 2, and CE Display) 6 ₁ is polled (201). On the other hand, the wireless connection device ₆₁ side, the polarity inversion detection circuit 31 ₁ has to detect the presence or absence of a polarity inversion (polling) (301), when there is a polling polarity inversion detection circuit 31 ₁ fault diagnosis unit 32 ₁ start, thereby, the fault diagnosis unit 32 ₁ performs loop check, a diagnosis by voltage check (302). Diagnosis result
_1, the presence or absence of failure, conveys to the DC loop closing circuit 33 _1.
DC loop closing circuit 33 ₁ detects the presence or absence of the failure (303),
If there is no fault, the DC loop is closed and responded to the radio network controller (indicated as RCU in FIG. 3) (304). If there is a fault, the DC loop is left open and the process is terminated. Becomes In contrast, the central controller 10 waits for a notification to the effect of the response perforated by the response signal detection unit 22 ₁ immediately after to perform the polling (202). Here, when a predetermined time elapses with the DC loop kept open, the central controller 10 detects this by means of a timer (not shown) and performs processing for the failure--for example, sounding of a buzzer (not shown), lighting of a lamp, or failure of the lamp. The operator is notified of the occurrence of a failure by displaying the ID number of the CE that has become on the display, etc.
Reorganization of system such as activation of alternative wireless connection device-
Is performed (203). On the other hand, there is no failure and the response signal detection unit 2
2 ₁ receives the signal by the ends. Central control unit 10 by polling completion causes depolarize controls the polarity inversion generator 21 _1. Central control unit 10, all of the wireless connection device ₆₁ through ₃
, The above-mentioned fault diagnosis is performed by sequentially performing polling. As described above, according to the present embodiment, the failure of the wireless connection devices 6 _{1 to} 6 ₃ can be accurately detected on the wireless line control device 1 side by a simple method of polarity inversion and opening / closing of the DC loop. The instruction for diagnosis and the response of the diagnosis result may be based on other control signals. Diagnosis of failure includes loop check,
A method other than the voltage check may be used. Further, an example of a call flow of operation of the wireless telephone 8 ₁ described above in FIG. 4, a method of performing diagnostics incorporated in the first part of the connection control as 401 and 501 in FIG. Also conceivable. [Effects of the Invention] As described above, according to the present invention, a communication failure in a wireless connection device is diagnosed by an instruction from the wireless line control device side, and the result is sent to the wireless line control device side. Therefore, the occurrence of a failure in the wireless connection device can be detected by the wireless line control device. Therefore, reconfiguration of the system, warning to the operator, and the like can be performed quickly. Then, information for instructing the wireless connection device to diagnose a communication failure due to the wireless line is transmitted by using the polarity inversion by the polarity inverting unit, and the information of the diagnosis result of the communication failure to the wireless line is transmitted by the DC loop switching circuit. It returns to the wireless circuit controller using the opening and closing of the device, and since these are provided in the normal telephone interface, it is necessary to add especially new hardware to the wireless connection device and the wireless circuit controller Therefore, it is possible to appropriately diagnose the failure.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of one embodiment of the present invention, FIG.
FIG. 4 is a flowchart for explaining the operation of one embodiment of the present invention. 1 ...... the radio network controller ₆₁ through ₃ ...... wireless connection device 7 _{1-7 3} ...... zones 8 _{1-8 3} ...... radiotelephone 20 ₁ to 20 ₃ ...... processing means 21 ₁ to 21 ₃ ...... Polarity inversion generators 22 _{1 to} 22 ₃ ... Response signal detectors 30 ₁ to 30 ₃ ... Diagnosis / return means 31 _{1 to} 31 ₃ ... Polarity inversion detectors 32 _{1 to} 32 ₃ ... Failure diagnosis units 33 ₁ to 33 ₃ …… DC loop switching circuit

   ────────────────────────────────────────────────── ─── Continuation of front page    (73) Patent holder 999999999               Toshiba Corporation               72 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa (72) Inventor Akiho Sasaki               1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo               Nippon Telegraph and Telephone Corporation (72) Inventor Yoshio Ariizumi               2-1-1 Shinmeidai, Hamura-cho, Nishitama-gun, Tokyo               No. 1 Inside the Hamura Plant of Kokusai Electric Inc. (72) Inventor Shin Saegusa               NEC, 33-1, Shiba, Minato-ku, Tokyo NEC               Inside the corporation (72) Inventor Fumio Suzuki               4-3 Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa               No.1 Matsushita Communication Industrial Co., Ltd.               Inside (72) Inventor Yukihiro Sako               1-3-1 Asahigaoka, Hino-shi, Tokyo               Inside Toshiba Hino Factory                (56) References JP-A-57-25743 (JP, A)                 JP-A-60-140943 (JP, A)                 Shokai Sho 61-15867 (JP, U)

Claims (1)

(57) [Claims] A wireless connection device that performs communication by a wireless line with a wireless telephone within a zone of a predetermined area, and a wireless line control device that connects a line succeeding an exchange and the wireless connection device to perform line control. In the wireless telephone system, the wireless line control device has a polarity inversion generating unit that inverts the polarity of a line reaching the wireless connection device, and the wireless connection device is diagnosed for a communication failure due to the wireless line. While sending the commanding information using the polarity reversal by the polarity reversing unit and providing processing means for performing predetermined processing based on the information returned from the wireless connection device, the wireless connection device includes the wireless channel control device. A DC loop opening / closing circuit for opening / closing a DC loop of a line leading to a line, and performing a failure diagnosis or a predetermined diagnosis on the connection device itself in accordance with the information by the polarity reversal instructing a diagnosis. Diagnosis / return means for diagnosing a communication failure of a wireless line due to opposition to a wireless telephone and returning information of the diagnosis result to the wireless line control device by opening / closing a DC loop by the DC loop opening / closing circuit is provided. A wireless telephone system. 2. The wireless connection device includes an alternative wireless connection device, and the processing unit activates the corresponding alternative wireless connection device when a predetermined time has elapsed while the DC loop is kept open by the wireless connection device. The wireless telephone system according to claim 1, wherein the system is reorganized. 3. In the wireless line control device, in the initial part of the connection control with the wireless connection device in the call operation to the wireless telephone,
The processing means sends the information for instructing the wireless connection device to diagnose the communication failure by the wireless line by using the polarity reversal by the polarity reversing unit to claim (1) or (2). Wireless telephone system.