JP2980105B1 - Satellite reception failure prevention method and method - Google Patents

Abstract

A method and system for preventing satellite reception failure with a higher probability than conventional methods. A receiving station automatically performs diagnosis within a satellite receiving device at predetermined time intervals irrespective of the time of receiving a satellite communication line, accumulates receiving device state information, When distributing data, the transmitting station creates a transmission data list that is a list of data transmitted through the satellite communication line, and the receiving station creates reception data history information when receiving distribution data through the satellite communication line. At the transmitting station, the self-diagnosis result including the receiving device state information and the received data history information from the receiving station is transmitted to the transmitting station via the terrestrial communication line, and the self-diagnosis result is received via the terrestrial communication line.
A change in the state of the receiving device of the previous receiving station and signs of occurrence of a reception failure in satellite communication are analyzed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a satellite reception failure prevention method and, more particularly, to a satellite reception device capable of predicting the occurrence of a reception failure in a satellite receiver of a receiving station in which data is transmitted from a transmitting station via a satellite communication line. It relates to a method for preventing reception failure.

[0002]

2. Description of the Related Art As a preventive measure for a satellite receiving apparatus on a receiving station side, a preventive measure at a regular inspection level performed at intervals of several days or months is taken, and a maintenance person is sent to a receiving station installation location. Maintenance inspections are being carried out by dispatching them.

In this case, it is difficult to prevent a satellite reception failure beforehand, and in practice, after a satellite reception failure has occurred, a method of investigating the cause of the satellite reception failure is first performed after receiving the notification. I came. For this reason, it is almost impossible to predict the satellite reception failure, and the response to the satellite reception failure cannot be said to be prompt. For a self-diagnosis method of a device failure of a demodulator of a receiving device of a relay station of a digital microwave radio line, see, for example, Japanese Patent Application Laid-Open No. 3-147445.
Reference is made to the description in Japanese Patent Publication No.

[0004]

As described above, the conventional method for preventing a satellite reception failure has the following problems.

The first problem is that the inspection interval of the receiving device is long, and it is difficult to detect a change in state of the satellite receiving device in a short time. The reason is that the state monitoring of the satellite receiving device at the receiving station is performed by regular inspection every several days or several months.

A second problem is that a maintenance person must be sent to the site to check the receiving device. If there are many receiving stations, it is not possible to check all the receiving stations at once. That is, it is possible, and the number of man-hours for maintenance work and the cost increase.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a method and system for realizing prevention of satellite reception failure with a higher probability than the conventional method. is there.

[0008]

In order to achieve the above object, (a) a receiving station is provided within a satellite receiving apparatus at a predetermined time interval irrespective of when data is received via a satellite communication line. Automatically diagnoses and accumulates receiving device state information, and (b) when distributing data from the transmitting station, the transmitting station creates a transmission data list which is a list of data transmitted via the satellite communication line. (C) In the receiving station,
When distribution data is received via a satellite communication line, reception data history information is created, and (d) a self-diagnosis result including reception device status information and reception data history information from the reception station is transmitted to the transmission station via a terrestrial communication line. (E) the transmitting station that has received the self-diagnosis result via the terrestrial communication line analyzes changes in the state of the receiving device of the receiving station and signs of occurrence of a reception failure in satellite communication. It is characterized by.

In the present invention, the transmitting station compares the transmitted data list with the received data history information, analyzes the state of the receiving device, and distributes the data that failed to be received by the receiving station in the next distribution. Add to list.

[0010] In the present invention, the receiving device status information may include information such as a synchronization shift, a radio field intensity, and the like.
The reception data history information includes a radio wave quality and a data error rate, and the reception data history information includes a total number of successful receptions, a total number of reception failures, and reception success record information.

[0011]

Embodiments of the present invention will be described. The present invention, in data distribution via a satellite communication line, in addition to automatically perform a periodic diagnosis of the satellite receiving device at the receiving station side, the diagnosis result is notified to the transmitting station side,
The transmitting station analyzes the state of the receiving device to help prevent satellite reception failure.

In the embodiment of the present invention, the receiving station that receives the distribution data from the transmitting station via the satellite communication line is independent of the data reception via the satellite communication line,
At a predetermined time interval, the satellite receiving apparatus is automatically diagnosed, the receiving apparatus state information is sequentially accumulated in a time series, and when the distribution data is received from the transmitting station via the satellite communication line, the reception is performed. Means for creating data history information, transmitting the received data history information, and a self-diagnosis result including the receiving device state information accumulated in time series to the transmitting station via a terrestrial communication line. Further, when transmitting data based on the distribution list, the transmitting station creates a transmission data list which is a list of data transmitted via a satellite communication line, and transmits the self-diagnosis result from the receiving station to a terrestrial communication line. It analyzes the change in the state of the receiving device of the receiving station and the sign of the occurrence of a reception failure in satellite communication when receiving the data via the receiving station, and adds the data that the receiving station failed to receive to the next distribution list.

The automatic diagnosis of the satellite receiver at the receiving station is performed at a predetermined time, for example, every several minutes, and the result of the diagnosis is stored in the satellite receiver every time. The diagnostic items are
Preferably, it consists of a total of seven items, which are broadly divided into two types: receiving device status and received data history.

The state of the receiving apparatus is required for analysis and prediction / prevention of satellite reception failure, including (1) radio wave intensity, (2) radio wave quality, (3) out-of-synchronization state, and (4) data error (bit error). Rate), and is automatically diagnosed periodically, thereby generating diagnosis result data for each diagnosis time and storing the data as reception device state data in the reception device.

The received data history includes (1) the total number of successfully received data indicating the total number of data successfully received by the receiving apparatus at the receiving station, and (2) the total number of data indicating the failed data of the satellite. The total number of failed data, and (3) three items of the reception success record list in which the names of the data successfully received by the satellite are recorded. These data are generated every time the satellite is received, and received in the receiving device. Stored as data history.

The automatic diagnosis result data generated as described above and stored in the receiving apparatus is notified to the transmitting station using a terrestrial communication line.

On the transmitting station side, based on the received automatic diagnosis result data on the receiving station side, whether there is a change in the state of the receiving device on the receiving station side, or whether there is any indication that a satellite reception failure will occur in the future. Investigations to prevent satellite reception failures
Perform analysis.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the configuration of one embodiment of the present invention.

FIG. 1 is a diagram showing the configuration and data flow of a transmitting station 10, a receiving station 20, a satellite communication line 30, and a terrestrial communication line (public network, dedicated line, etc.) 40.

For normal data distribution, a satellite communication line 30 using satellites is used from the transmitting station 10 to the receiving station 20. In addition, a terrestrial line communication 40 using a terrestrial line is used for the notification of the automatic diagnosis result from the receiving station 20 to the transmitting station 10.

First, data prepared by the transmitting station 10 and the receiving station 20 will be described. FIG. 2 and FIG. 3 show data necessary for the transmitting station 10 and the receiving station 20, respectively.

The transmission data list of the transmitting station 10 executes data transmission using the satellite communication line from the transmitting station 10 to the receiving station 20 based on the distribution list 101 which is a list of transmission data (102). At this time, a list of actually transmitted data is listed, and is generated when transmission is completed (103).

When receiving the self-diagnosis result data (described in detail below) of the receiving station satellite receiver transmitted from the receiving station 20 via the terrestrial communication line 40, the transmitting station 10 diagnoses the receiving apparatus (104). ), The created transmission data list is collated with the received data history information (which will be described in detail below), which is the self-diagnosis result data, and the data that has failed to be received by the receiving station 20 is added to the next distribution list (10).
6).

Automatic diagnosis result data 202 on the receiving station 20 side
Is data that is automatically generated in the receiving device installed on the receiving station side. The automatic diagnosis result data includes received data history information 203 and receiving device state information 204.

The receiving device status information 204 includes a diagnostic data of the receiving device of the satellite communication line which is automatically executed in the satellite receiving device at a certain time interval irrespective of the data reception via the satellite communication line. The result. The contents of the diagnosis are prediction / prevention of satellite reception failure, and when a satellite reception failure occurs,
It consists of diagnostic results for four items, radio field intensity (reception field intensity), radio field quality, synchronization deviation, and data error rate required for failure analysis.

The receiving apparatus status information 204 is
Until notification to the 0 side is made, it is accumulated in the receiving device.

The received data history information 203 is data that is recorded / updated in the satellite receiving apparatus at the time of satellite reception. The received data history information 203 indicates the total number of data received successfully indicating the total number of data successfully received by the satellite and the total number of data failed to receive the satellite. The list includes three items of the received data failure total number and the name of the data that has been successfully received by the satellite.

The automatic diagnosis result data 202 stored in the receiving device is transmitted to the transmitting station 10 via the ground communication line 40 at predetermined time intervals.

The transmitting station 10 investigates / analyzes the state of the satellite receiving apparatus based on the automatic diagnosis result data transmitted from the receiving station 20 at regular time intervals (10).
4).

In order to prevent satellite reception failure, a plurality of automatic diagnostic results measured at predetermined time intervals are examined for the following four points while observing the measurement time and the flow of the results, and the receiving station is checked. Check for signs of abnormality on the side.

(1) It is checked whether or not a synchronization shift has occurred. If a synchronization error has occurred, satellite reception cannot be performed on the receiving station side. Therefore, it is necessary to elucidate the cause of the synchronization error by the next satellite reception and to eliminate the synchronization error phenomenon.

(2) Check the radio wave intensity. The radio field intensity needs to indicate a value within the guaranteed range presented at the time of construction of the satellite communication system. Since the radio wave intensity may fluctuate depending on weather conditions, it is also an important check point that there is no low pressure on the line connecting the transmitting station side and the receiving station side. If it is due to bad weather, it is safe to treat it as a short-term phenomenon. If the radio wave intensity indicates zero, a physical obstacle such as a disconnection on the receiving station side may be considered.

(3) Check the radio wave quality. Even if the signal strength is within the guaranteed range, satellite reception fails if the signal quality is poor. The radio wave quality affects not only the bad weather conditions but also the deviation of the antenna position.

(4) Check the data error rate.
Check whether the data error rate is within the guaranteed range at the time of system construction.

With respect to the above four points, it is checked whether or not there is any indication that a satellite reception failure has occurred, which is useful for preventing the satellite reception failure.

The transmission data list prepared by the transmitting station 10 and the received data history information are compared (105), and the receiving station checks whether there is any missing data.
As a result, if data in which satellite reception has failed is found, the data is added as one of the transmission data at the time of satellite distribution from the transmitting station next time.

The above-mentioned method is useful for preventing satellite reception failure.

FIG. 4 is a diagram showing an example of an operation sequence according to one embodiment of the present invention. Hereinafter, an operation sequence according to an embodiment of the present invention will be described with reference to FIG.

(1) The receiving station automatically performs a diagnosis within the satellite receiving apparatus at certain fixed time intervals and accumulates receiving apparatus state information regardless of the time of data reception via the satellite communication line.

(2) Data is distributed from the transmitting station. At this time, the transmitting station creates a transmission data list.

(3) The receiving station receives the distribution data via the satellite communication line, and creates reception data history information at that time.

(4) Also, at the receiving station, irrespective of the time of data reception via the satellite communication line,
Diagnosis is performed automatically in the satellite receiver, and receiver status information is stored.

(5) The self-diagnosis result (receiver status information, received data history information, and receiver status information) is transmitted from the receiving station to the transmitting station via the ground communication line.

(6) The transmitting station compares the transmitted data list with the received data history information, and investigates and analyzes the state of the receiving device.

(7) The transmitting station updates the distribution list (for example, adds data that failed to be received by the receiving station to the next distribution list) and distributes the data via the satellite communication line. .

[0046]

As described above, according to the present invention,
There is an effect that prediction / prevention of satellite reception failure can be performed more efficiently and with higher accuracy than the conventional method.

The reason is as follows. That is,
Conventionally, the maintenance work of the satellite receiving device has been performed by a maintenance person every several days or months. However, in the present invention, the diagnosis interval is dramatically increased by performing the automatic diagnosis at intervals of several minutes in the receiving device. The diagnosis result was notified to the transmitting station using the communication method using the ground line, and the transmitting station was able to diagnose the receiving device. This is because it is no longer necessary to move the head.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a system configuration according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a transmission data list in one embodiment of the present invention.

FIG. 3 is a diagram showing an example of self-diagnosis result data in one embodiment of the present invention.

FIG. 4 is a diagram showing an operation sequence of one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 transmitting station 20 receiving station 30 satellite communication line 40 terrestrial communication line 101 distribution list 102 data transmission processing 103 transmission data list creation processing 104 receiving apparatus diagnosis processing 105 collation processing of transmission data list with reception data history 107 distribution list update processing 201 self Diagnosis result data generation process 202 Received data history information 203 Receiving device status information

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04B 1/60 H04B 3/46-3/48 H04B 17/00-17/02 H04B 7/14-7 / 22 H04L 1/00 H04L 29/00

Claims (6)

(57) [Claims] (1) A receiving station automatically performs a diagnosis within a satellite receiving apparatus at a predetermined time interval irrespective of data reception via a satellite communication line, and makes a state of the receiving apparatus. (B) When transmitting data from the transmitting station via the satellite communication line, the transmitting station transmits the data via the satellite communication line. (C) the receiving station creates received data history information when receiving the distribution data via the satellite communication line; and (d) receiving data history information and time-series information from the receiving station. Transmitting the self-diagnosis result including the accumulated receiving device state information to the transmitting station via a terrestrial communication line; and (e) transmitting the self-diagnosis result via the terrestrial communication line to the transmitting station. Changes in the state of the station's receiver And analyzing a sign of occurrence of a reception failure in satellite communication. 2. The transmitting station compares the transmitted data list with the received data history information, analyzes the state of the receiving device, and adds data that failed to be received by the receiving station to a next distribution list. 2. The method according to claim 1, wherein
Satellite reception fault prevention of placement. 3. The receiving device status information includes a synchronization shift, a radio wave intensity, a radio wave quality, and a data error rate in the receiving device, and the received data history information includes a total number of successful receptions, a total number of unsuccessful receptions, and a record of successful reception success. The method for preventing satellite reception failure according to claim 1, comprising: 4. A transmitting station, a receiving station including a receiving device for receiving distribution data from the transmitting station via a satellite communication line,
The receiving station automatically diagnoses the satellite receiver at predetermined time intervals irrespective of data reception via the satellite communication line, and sequentially receives the receiver status information in a time-series manner. Means for storing, when receiving distribution data from the transmitting station via a satellite communication line, means for creating received data history information, the received data history information, and the receiving device state information accumulated in time series Means for transmitting the self-diagnosis result to the transmitting station via a terrestrial communication line, comprising: a list of data transmitted through the satellite communication line when the transmitting station distributes data based on the distribution list. Means for creating a transmission data list; changes in the state of the receiving device of the receiving station when the self-diagnosis result is received from the receiving station via a terrestrial communication line; And means for analyzing the signs, satellite fault management system, characterized in that the failed data received by the receiving station includes a means for adding to the next distribution list. 5. The transmitting station compares the transmitted data list with the received data history information, analyzes the state of the receiving device, and adds data that failed to be received by the receiving station to the next distribution list. 5. The method according to claim 4, further comprising: 6. The receiving device status information includes a synchronization shift, a radio wave intensity, a radio wave quality, and a data error rate in the receiving device, and the received data history information includes a total number of successful receptions, a total number of failed receptions, and a successful reception result information. The satellite reception failure prevention system according to claim 4, comprising: