JP3323161B2 - Relay station monitoring method and relay station monitoring system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication monitoring device for monitoring various states in a communication system, and more particularly to a technique for a relay station monitoring method and a relay station monitoring system for notifying an operator of the occurrence of a fault.

[0002]

2. Description of the Related Art A communication monitoring apparatus for monitoring a reception state in a conventional communication system is disclosed in Japanese Patent Laid-Open No. 09-130339.
It is disclosed in the gazette. FIG. 7 is a block diagram illustrating the communication monitoring device 201 as an example of the monitoring device. The received signal received by the wireless receiving means 206 is converted into an electric field strength measuring means 2
16, a communication format of the received signal is analyzed by the signal analysis unit 215, and a comparison result between the signal format input from the key input unit 208 or the like and stored in advance and the received signal format is displayed on the display unit 209. Is displayed on the screen.

[0003]

However, the prior art has the following problems. In a conventional communication monitoring device in a communication system, the format of a received signal is analyzed and the result is displayed. However, an abnormality in the reception state is to be independently determined by an operator and to deal with the abnormality in the reception state. However, there is a problem that each operator performs the processing appropriately.

[0004] The present invention has been made in view of such a problem, and an object of the present invention is to always analyze a control signal of a designated frequency from a relay station and detect an abnormality of the control signal or A relay station monitor that notifies an operator of the occurrence of a failure when non-reception has occurred and automatically resets the CPU of the relay station when failures occur consecutively so that the relay station can be restored. The present invention provides a method and a technique related to a relay station monitoring system.

[0005]

The gist of the present invention according to claim 1 is a relay station monitoring method in a wireless communication system using a control channel from a relay station, wherein the communication station monitors a reception state of the wireless communication. To the monitor device, a frequency number specifying a control signal of the control channel and a system number specifying the wireless communication system are input, and a first predetermined value for determining time is input to a first abnormality detection timer, Start receiving the control channel transmitted from the relay station,
It is determined whether the elapsed time of the first abnormality detection timer from the start of receiving the control signal is less than or less than the first predetermined value, and if the elapsed time is less than or less than the first predetermined value, When a control carrier for a control signal is received, a signal format of the control signal registered in advance in the communication monitor device is compared with a signal format of the received control signal to determine whether the content of the control signal is normal. And, if the content of the control signal is normal, determine whether the system number of the received control signal matches the system number input to the communication monitoring device, if the system number matches, the It is determined that the reception of the control signal is normal, the normal reception state of the control signal is reported to the operator, and the reception of the control signal is not determined to be normal. If the reception of the control signal is not determined to be normal while the elapsed time is smaller than or less than the first predetermined value, the reception of the control signal is not repeated. The relay station monitoring method is characterized in that the operator is notified that the reception is abnormal. The gist of the present invention according to claim 2 is that, in the notification to the operator, a normal reception state of the control signal is displayed on a display sounding means, and when the reception of the control signal is abnormal, the display sound is generated. 2. The relay station monitoring method according to claim 1, wherein an abnormal state of reception is displayed on a sound unit and a sound is generated. The gist of the present invention is that the reception state of the control signal is output to a CPU reset unit, and the abnormal state of the reception of the control signal is determined by a second state of the CPU reset unit.
If the abnormality detection timer continues for more than or equal to a second predetermined value, a CPU reset signal is output to the control panel of the relay station, the control panel is reset, and the relay station is restarted. 2. The automatic restoration is performed by performing
Or the relay station monitoring method described in 2. The relay station according to any one of claims 1 to 3, wherein the CPU reset means displays a reception state of the control signal and an abnormal reception state. Be in the monitoring method. According to a fifth aspect of the present invention, there is provided a storage medium storing a program capable of executing the relay station monitoring method according to any one of the first to fourth aspects. Claim 6
The gist of the present invention described is a relay station monitoring system in a wireless communication system using a control channel from a relay station, and stores a system number identifying the wireless communication system and a frequency number of the control channel, For the system number and the signal format of the control signal stored in advance, the reception state is compared by comparing the system number and the signal format of the control signal received based on the frequency corresponding to the frequency number. The present invention resides in a relay station monitoring system characterized by including a communication monitoring device that analyzes and, when reception of the control signal is abnormal, displays an abnormal reception state and makes a sound. The gist of the present invention according to claim 7 is that the communication monitor device includes a signal processing unit that stores the system number and the frequency number input via a data input unit and a frequency corresponding to the frequency number. A wireless receiving unit that is notified from the signal processing unit and receives the control signal, and displays a reception state of the control signal analyzed by the signal processing unit. If the reception of the control signal is abnormal, the reception is abnormal. Display sounding means for displaying a state and sounding, wherein the signal processing means presets the elapsed time of the first abnormality detection timer from the start of receiving the control signal in the first abnormality detection timer. If the control carrier of the control signal cannot be received beyond the first predetermined value / exceeded, or the signal format of the control signal of the control channel registered in the signal processing means in advance. Receiving the control signal when the mat does not match the signal format of the received control signal, or when the system number of the received control signal does not match the system number stored in the signal processing means. Is determined to be abnormal, the relay station monitoring system according to claim 6, characterized in that: 9. The gist of the present invention according to claim 8, wherein the signal processing means receives the control carrier while the elapsed time is equal to or less than the first predetermined value, and a signal format of the control channel registered in advance. And match with the signal format of the received control signal, and
It is determined that the control signal is normally received by matching the system number of the received control signal with the system number stored in the signal processing unit. Notifying a normal reception state, and when the elapsed time is equal to or less than the first predetermined value, the control carrier cannot be received, or the signal format of the control signal cannot be normally received. If
Or, when the system number of the control signal does not match the system number stored in the signal processing means,
Control signal determining means for notifying the display sounding means of an abnormal state of reception of the control signal, and storing the frequency number,
8. A frequency designation unit for notifying the radio reception unit of a frequency corresponding to the frequency number and transmitting a start notification of reception of the control signal to the control signal determination unit. It exists in the relay station monitoring system described above. The gist of the present invention according to claim 9 is that the communication monitor device includes a CPU reset unit that displays a reception state of the control signal notified from the signal processing unit, and the signal processing unit and the CPU reset unit. An interface for transmitting the control signal reception state to the CPU reset means.
A control panel for inputting a CPU reset signal from a PU reset means to restart the relay station and automatically restore the relay station; the CPU reset means determines whether an abnormal state of reception of the control signal indicates that the CPU reset means 9. The method according to claim 6, wherein the CPU reset signal is output to the control panel when the second abnormality detection timer has a second predetermined value equal to or more than a second predetermined value. In the relay station monitoring system.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, the relay station monitoring system according to the present embodiment
, A relay station 2 and a mobile station 4. The communication monitoring device 1 analyzes the control signal 3 transmitted from the relay station 2 to the communication monitoring device 1 and the mobile station 4, and detects an abnormal reception. Report to.

FIG. 2 is a block diagram showing the configuration of the communication monitor device 1. The communication monitoring device 1 includes a wireless receiving unit 6
And signal processing means 7 and key input means (data input means) 8
The signal processing means 7 includes a control signal determination means 10 having a first abnormality detection timer 15 and a frequency designation means 11.

[0008] The communication monitoring device 1 receives the downlink control signal 3 transmitted from the relay station 2 and analyzes the content of the signal format. When the control carrier of the downstream control signal 3 cannot be received, or when the signal format of the received content of the control signal 3 is wrong, the display sounding means 9 displays and sounds an abnormal reception state.

A multi-channel access (hereinafter, referred to as MCA) system will be described as an example of a wireless communication system using a control channel. Key input means 8 to M
The system number and frequency number of the CA system are input, and the frequency designation unit 11 stores the frequency number, and designates the frequency to the wireless reception unit 6 based on the frequency number. The wireless receiving unit 6 receives the control signal 3 of the specified frequency transmitted from the relay station 2 based on the system number stored in the frequency specifying unit 11. The control signal determination unit 10 analyzes the control signal 3 received by the wireless reception unit 6. The display sounding means 9 displays an analysis state of the control signal notified from the signal processing means 7, and when reception is abnormal, displays the abnormal state of the reception and sounds.

Next, a method using the communication monitor device 1 will be described. Example of MCA system technology (RCR STD
-32A), referring to FIG. 1, FIG. 2 and FIG.
The operation of each component will be described in detail.

In the communication monitoring device 1, the frequency number and the system number are input from the key input means 8 and notified to the signal processing means 7. The signal processing unit 7 notifies the wireless receiving unit 6 of the designation of the frequency based on the frequency number by the frequency designating unit 11, and sends a start-up notification of the receiving operation to the control signal determining unit 10. In the wireless receiving means 6,
The reception of the control signal 3 corresponding to the notified frequency designation is started. The received control signal 3 is transmitted to the control signal determination unit 10.
To determine whether the control signal 3 has been correctly received.

A method for determining the reception of the control signal 3 is as follows.
The BCCH broadcast channel will be described as an example of a control channel scheme. First, it is confirmed whether all the signals have been successfully received by comparing the signal format of the content of the BCCH broadcast channel received with the signal format registered in the control signal determination means 10 in advance. Next, it is checked whether the system number specified in advance matches the system number of the received BCCH broadcast channel. This determination is made by the control signal determination means, by the control signal 3 on the BCCH broadcast channel.
If the elapsed time of the first abnormality detection timer 15 from the start of reception of the first abnormality detection timer 15 is less than / less than a first predetermined value of the first abnormality detection timer 15, a common access channel (hereinafter, referred to as CAC) is used.
Display sound means 9 as completion of capture (normal reception of control signal)
Notify to

The elapsed time of the first abnormality detection timer 15 from the start of reception of the control signal 3 is the first abnormality detection timer 15
If the reception of the control signal 3 of the BCCH broadcast channel is not normal even if the control signal 3 is greater than or greater than the predetermined value, the abnormality of the CAC is notified to the display / sounding means 9 so that the reception of the control signal 3 is abnormal. Can notify operators.

FIG. 3 is a flowchart showing the operation of FIG. In the signal processing means 7 shown in FIG. 2, after setting the first predetermined value in the first abnormality detection timer 15, the frequency number corresponding to the control signal 3 to be received and the system number of the MCA system are designated (STEP1, STEP2). ).

Next, an instruction of a frequency based on the designated frequency number is given to the wireless receiving means (wireless receiving unit) 6 (ST).
EP3), the first abnormality detection timer 15 is activated to start receiving the control signal 3 (STEP4).

Next, the CA after the reception of the control signal 3 is started.
The C capture determination 17 will be described in detail. For capturing the CAC, it is determined whether or not the elapsed time of the first abnormality detection timer 15 is equal to or less than a predetermined first predetermined value (S
TEP5), it is confirmed whether the control carrier of the control signal 3 of the designated frequency is received while the elapsed time of the first abnormality detection timer 15 is equal to or less than the first predetermined value (S).
(Step 6) When the control carrier is received, it is determined whether the signal of the BCCH broadcast channel has been correctly received by comparing with the signal format registered in the control signal determination unit 10 in advance (STEP 7). Next, BCC
It is determined whether or not the system number of the control signal 3 of the H broadcast channel matches the system number stored in the signal processing means 7 in advance (STEP 8). When they match, the acquisition of the normal CAC is completed (STEP 9).

In STEP5 to STEP8, CAC
If not, the process returns to STEP 5, and the CAC capturing operation is repeated while the elapsed time of the first abnormality detection timer 15 is equal to or less than a first predetermined value.

If the predetermined value of the first abnormality detection timer 15 exceeds or exceeds a predetermined value, it is determined that the CAC is abnormal (C).
(Step 10), and notifies the display / sounding means (display unit) 9 of the content of the detected abnormality (STEP 11).

FIG. 4 shows another embodiment of the relay station monitoring system according to the present embodiment. The communication monitoring device 101, the relay station 102, and the mobile station 4 are schematically configured, and the control signal 3 is transmitted from the relay station 102 to the communication monitoring device 101 and the mobile station 4.

FIG. 5 is a block diagram showing the configuration of the relay station monitoring system of FIG. The communication monitoring device 101 includes a wireless receiving unit 6, a signal processing unit 107, a key input unit 8, a display sounding unit 9, an interface 112, and a personal computer (CPU reset unit) 113. A control signal determining means having a detection timer and a frequency specifying means are provided. The personal computer 113 is provided with a second abnormality detection timer for judging the elapse of the abnormal state with respect to the reception of the control signal.

The communication monitor 101 receives the downlink control signal 3 transmitted from the relay station 102 and analyzes the content of the control signal 3. If the down control signal 3 cannot be received or if the received content of the control signal 3 is incorrect, an abnormal reception state is displayed and sounded, and the signal processing means 1
From 07, a signal indicating abnormality is output to the personal computer 113 via the interface 112, and the abnormal state of reception is displayed on the personal computer 113.

When the reception abnormal state continues for more than / over a second predetermined value of the second abnormality detection timer, a CPU reset signal 1 is sent to the CPU of the control panel 114 of the relay station 102.
05 is sent out, and the CPU of the control panel 114 is reset.
As a result, the device of the relay station 102 is restarted, and the automatic recovery of the relay station 102 is achieved.

The other components, ie, the wireless receiving means 6, the key input means 8, the display sounding means 9, and the control signal determining means 1
Since 0 and the frequency designation means 11 have the same functions as those of the communication monitor device 1 shown in FIG.

The control signal determination means 110 performs the CAC capture determination 17 (STEP 5 to STEP 8) shown in FIG. 6, and completes the CAC capture while the elapsed time of the first abnormality detection timer 15 is less than or less than a first predetermined value. Then, a CAC capture completion notification (normal reception of the control signal) is notified to the personal computer 113 via the interface 112.

FIG. 6 is a flowchart showing the operation of FIG. With reference to FIG. 6, an operation of another relay station monitoring system according to the embodiment will be described in detail. STEP1-ST
EP11 is the same as the flowchart of FIG.
Step 10 and subsequent steps will be described.

If the elapsed time of the first abnormality detection timer 15 exceeds or exceeds a first predetermined value, it is determined that the CAC is abnormal (STEP 10), and the content of the abnormality detection is notified to the display / sounding means (display unit) 9. (Step 11).

[0027] The CAC capture abnormality is detected by the interface 11
2 to the personal computer 113 (STEP 1).
2).

In the personal computer 113, the signal processing means 107
The state of reception of the signal notified from is always displayed, and it is determined whether or not the progress of the abnormal state of reception exceeds or exceeds a second predetermined value of a second abnormality detection timer set in the second abnormality detection timer 115. (STEP 13).

Second abnormality detection timer 1 of personal computer 113
Based on the judgment of 15, when abnormalities occur continuously,
The relay station 102 is notified of the CPU reset signal 105 by an external contact output, and resets the control panel 114 of the relay station 102 (STEP 14). After the reset, the relay station 102 is restarted, and is automatically restored.

If the elapse of the reception abnormal state is less than / less than the second predetermined value of the second abnormality detection timer, the control signal 3
It is determined whether or not an abnormal state of reception has been detected (S
TEP15).

If an abnormal state of reception of the control signal 3 has been detected, the process returns to STEP 13, and if no abnormal state of reception of the control signal 3 has been detected, the operation returns to normal operation.

In the embodiment of the present embodiment, the BCCH broadcast channel is raised as an example of the control channel system to determine whether the reception of the control signal is normal. Confirmation or confirmation taking into account the received electric field can also be considered as a determination condition.

Further, in the present embodiment, the present invention is not limited to this, and can be applied to a relay station monitoring method and a relay station monitoring system suitable for applying the present invention.

The number, position, shape, and the like of the above-mentioned constituent members are not limited to the above-described embodiment, but can be set to a number, position, shape, and the like suitable for carrying out the present invention. In the drawings, the same components are denoted by the same reference numerals.

[0035]

Since the present invention is configured as described above, the following effects can be obtained. The downlink control signal of the relay station is always displayed on the communication monitor, and if the reception of the control signal of the frequency corresponding to the specified frequency number is abnormal or not received, the abnormality is reported and the radio system failure The occurrence can be notified to the operator.

Further, in the event of a continuous occurrence of faults, the CPU is automatically reset in the control panel of the relay station so that automatic recovery can be achieved without operator intervention in the event of a radio system failure. Becomes possible.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a relay station monitoring system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of the communication monitor device of FIG.

FIG. 3 is a flowchart showing the operation of FIG. 1;

FIG. 4 is a diagram showing a configuration of another example of the relay station monitoring system according to the embodiment of the present invention.

FIG. 5 is a block diagram showing the configuration of FIG. 4;

FIG. 6 is a flowchart showing the operation of FIG. 4;

FIG. 7 is a block diagram illustrating an example of a conventional communication monitoring device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 communication monitoring device 2 relay station 3 control signal 4 mobile station 6 wireless receiving means (wireless receiving unit) 7 signal processing means 8 key input means (data input means) 9 display sounding means (display unit) 10 control signal determining means 11 Frequency designation means 15 First abnormality detection timer 17 CAC capture judgment 101 Communication monitor device 102 Relay station 105 CPU reset signal 107 Signal processing means 112 Interface 113 Personal computer (CPU reset means) 114 Control panel 115 Second abnormality detection timer 201 Communication monitor device 206 wireless reception means 208 key input means 209 display means 215 signal analysis means 216 electric field strength measurement means

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04B 17/02 H04B 7/26

Claims (9)

(57) [Claims] 1. A relay station monitoring method in a wireless communication system using a control channel from a relay station, comprising: a communication monitor device for monitoring a reception state of wireless communication, a frequency number for specifying a control signal of the control channel; And a system number identifying the wireless communication system, inputting a first predetermined value for determining a time into a first abnormality detection timer, starting receiving the control channel transmitted from the relay station, It is determined whether the elapsed time of the first abnormality detection timer from the start of receiving the control signal is less than / less than the first predetermined value, and if the elapsed time is less / less than the first predetermined value, When a control carrier for a control signal is received, a signal format of the control signal registered in advance in the communication monitor device and a signal format of the received control signal It is determined whether or not the content of the control signal is normal by comparing the control number with the system number of the received control signal, if the content of the control signal is normal, with the system number input to the communication monitor device Determining whether they match, if the system numbers match, determining that the reception of the control signal is normal, notifying a normal reception state of the control signal to an operator, and normal reception of the control signal If it is not determined that the reception of the control signal is repeated, the reception of the control signal is not determined to be normal while the elapsed time is less than or equal to the first predetermined value. And reporting to the operator that the reception of the control signal is abnormal. 2. The notification to the operator includes displaying a normal reception state of the control signal on a display sounding means. If the reception of the control signal is abnormal, the display sounding means displays an abnormal reception. 2. The relay station monitoring method according to claim 1, wherein the state is displayed and a sound is generated. 3. A reception state of the control signal is output to a CPU reset means, and an abnormal state of reception of the control signal is equal to or more than a second predetermined value preset in a second abnormality detection timer of the CPU reset means. The method further comprises: outputting a CPU reset signal to a control panel of the relay station when the signal exceeds the limit, resetting the control panel, restarting the relay station, and automatically restoring the relay station. 2. The relay station monitoring method according to 2. 4. The relay station monitoring method according to claim 1, wherein the CPU reset unit displays a reception state of the control signal and an abnormal reception state. 5. A storage medium storing a program capable of executing the relay station monitoring method according to claim 1. 6. A relay station monitoring system in a wireless communication system using a control channel from a relay station, wherein a system number specifying the wireless communication system and a frequency number of the control channel are stored and stored in advance. For the system number and the signal format of the control signal, the reception state is analyzed by comparing the system number and the signal format of the control signal received based on the frequency corresponding to the frequency number, When the reception of the control signal is abnormal, the relay station monitoring system includes a communication monitoring device that displays an abnormal state of reception and sounds. 7. The communication monitor device, a signal processing unit for storing the system number and the frequency number input via a data input unit, and a frequency corresponding to the frequency number notified from the signal processing unit. Wireless receiving means for receiving the control signal, displaying a reception state of the control signal analyzed by the signal processing means, if the reception of the control signal is abnormal, display an abnormal reception state, Display signal sounding means for sounding, wherein the signal processing means has a first predetermined value preset in the first abnormality detection timer for an elapsed time of the first abnormality detection timer from the start of receiving the control signal. If the control carrier of the control signal cannot be received above or above, or the signal format and reception of the control signal of the control channel registered in the signal processing means in advance If the signal format of the control signal does not match, or if the system number of the received control signal does not match the system number stored in the signal processing means, the reception of the control signal is abnormal. The relay station monitoring system according to claim 6, wherein it is determined that there is a relay station. 8. The signal processing unit receives the control carrier while the elapsed time is less than / less than the first predetermined value, and receives a signal format of the control channel registered in advance and the received control signal. Of the control signal, and the system number of the received control signal was matched with the system number stored in the signal processing means, and it was determined that the control signal was normally received. In this case, a normal reception state is notified to the display sounding means, and the control carrier cannot be received while the elapsed time is equal to or less than the first predetermined value, or When the signal format is not normally received, or when the system number of the control signal does not match the system number stored in the signal processing unit, the control is performed. Control signal determination means for notifying the display sounding means of an abnormal state of reception of a signal, storing the frequency number, notifying the frequency corresponding to the frequency number to the wireless reception means, and to the control signal determination means The relay station monitoring system according to claim 6, further comprising: a frequency designation unit that sends a start notification of reception of the control signal. 9. The communication monitoring apparatus according to claim 1, wherein the communication monitor displays a reception state of the control signal notified from the signal processing unit.
A PU reset unit; and an interface provided between the signal processing unit and the CPU reset unit for transmitting a reception state of the control signal to the CPU reset unit. The relay station includes a CPU from the CPU reset unit. A control panel for inputting a reset signal to automatically restart the relay station by restarting the relay station; wherein the CPU reset means determines whether an abnormal state of reception of the control signal is a second abnormality detection timer of the CPU reset means. The relay station monitoring system according to any one of claims 6 to 8, wherein the CPU reset signal is output to the control panel when the power supply continues for more than a second predetermined value set in advance.