JP2586791B2 - Broadcast management method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast management method , and more particularly to data delivery management in broadcast.

[0002]

2. Description of the Related Art Conventionally, in broadcast communication, delivery confirmation of each packet has been confirmed by an acknowledgment of a receiving station. As a method of returning the acknowledgment, there is a method in which each receiving station returns the acknowledgment directly to the broadcast transmitting station, and a method in which a certain relay station collects the acknowledgment from each receiving station and returns it to the broadcast transmitting station. However, the problem with broadcast communication is that some broadcast receiving stations cannot start communication or some stations cannot receive data due to some trouble during communication. That is. If the delivery quality of the broadcast is to be kept equal when such a station occurs, the broadcast becomes impossible if any station cannot start the communication. Further, if a line failure occurs even in one station during communication, subsequent broadcast communication becomes impossible. As described above, not all broadcast receiving stations can always receive data normally, but it is not desirable that communication be cut off for only one station. For example, when broadcasting to 100 stations, even if communication to one station is not possible, the amount of communication is 1/99 compared to the case of performing one-to-one communication if broadcasting to other 99 stations is possible. That's why. Therefore, even if there is a station that cannot receive the broadcast to some extent, the communication line can be more effectively used by the broadcast. It is necessary to guarantee the transmission data equally to the stations that cannot receive the data normally. In summary, from the establishment of a broadcast to its disconnection
In the broadcast control performed during the period, the receiving side is activated.
Stations that are not in service, or the line condition deteriorates, etc.
It is impossible to deliver data to some stations that can no longer receive
It is. That is, unequal delivery occurs. As an exception,
By continuing communication without disconnecting until delivery is confirmed
Delivery inequality is improved, but
Other receiving stations are receiving all data
And must continue to receive data.
Then, there is a problem that unnecessary processing increases.

[0003]

The problem to be solved by the present invention is that, even when the broadcast cannot be completely broadcast to all the stations as described above, the broadcast cannot be normally received when the broadcast is performed. No effort has been made to manage a station and to guarantee data to that station. The present invention solves this problem by absorbing
The equality that did not come through is processed independently of broadcast.
In addition, the present invention provides a means for reducing the unnecessary processing and keeping the delivery quality equal for each receiving station.

[0004]

Means for Solving the Problems As means for solving the above-mentioned problems in the present invention, a first invention is a communication line in which a plurality of transmitting stations and a plurality of receiving stations can perform broadcast reception. Broadcast data that is connected and the transmitting station has an identification number
Broadcast means for broadcasting data, and identification for giving the identification number to the transmitted broadcast data so that the identification number has a unique regularity over a plurality of broadcasts. A number adding means for receiving the broadcast data when the broadcast data is received;
Using the identification number attached to
Means for detecting unreceived data of broadcast data of broadcast communication;
A requesting means for requesting unreceived data independently of the broadcasting means, and a transmitting means for transmitting the data requested by the requesting means only to the requesting station .

[0005] The second invention is a broadcast communication means and a plurality of transmitting stations and a plurality of receiving stations is plugged in the broadcast receivable communication line, the transmitting station transmits the broadcast data, the Broadcast
It is characterized by comprising a delivery confirming means for confirming whether or not the broadcast data has been received at the receiving station after the end of communication, and a retransmitting means for retransmitting the unreceived data only to the non-receiving station.

According to a third aspect of the present invention, a plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of broadcast reception, and can be used continuously and repeatedly for data transmitted by the transmitting station. An identification number adding unit for adding a number, a broadcasting unit for broadcasting data with an identification number, and a notifying unit for notifying that the identification number has been normally repeated when the identification number is repeatedly used. It is characterized by having.

[0007] The fourth invention comprises a broadcast communication means and a plurality of transmitting stations and a plurality of receiving stations is plugged in the broadcast receivable communication line, the transmitting station transmits the broadcast data, the Broadcast
Independently of the broadcast means after the end of communication, the reporting means for periodically notifying the receiving station of the last broadcast data transmitted by the transmitting station; and Detecting means for detecting data, requesting means for requesting the transmitting station for detected unreceived data, and transmitting means for transmitting the data requested by the requesting means only to the requesting station . It is characterized by the following.

According to a fifth aspect of the present invention, a plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of receiving a broadcast, and the transmitting station broadcasts data with an identification number. Communication hand
And transmitting the broadcast data to a plurality of broadcasts.
An identification number adding means for the identification number put the identification number to have a specific regularity, of identity after of identity paper communication end
Independently of the broadcast communication means , a reporting means for periodically notifying the receiving station of the identification number of the broadcast data transmitted last by the transmitting station, and the broadcast data received and added to the broadcast data. Detecting means for detecting unreceived data based on the identification number and the identification number notified by the notifying means; requesting means for requesting unreceived data; and the transmitting station transmitting the data requested by the requesting means only to the requesting station . Transmitting means for transmitting.

According to a sixth aspect of the present invention, a plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of receiving a broadcast, and the transmitting station broadcasts data with an identification number. hand
And transmitting the broadcast data to a plurality of broadcasts.
And notifying means for notifying the identification number adding means identification number to add numbers that can be continuously and repeatedly used, that the identification number has been repeated correctly when it is repeatedly used, of identity paper communication After the end of the broadcast means
Reporting means for periodically notifying the receiving station of the identification number of the last broadcast data sent independently by the transmitting station; and the identification number and the notifying means receiving the broadcast data and added to the broadcast data. Detecting means for detecting unreceived data by the identification number notified by the requesting means, requesting means for requesting unreceived data, and transmitting means for transmitting the data requested by the requesting means only to the requesting station. It is characterized by having.

[0010] A seventh aspect of the present invention, the broadcast means and a plurality of transmitting stations and a plurality of receiving stations is plugged in the broadcast receivable communication line, the transmitting station transmits the broadcast data, the Broadcast
End checking means for checking whether or not the receiving station has normally ended the broadcasting means independently of the broadcasting means after the end of communication; and sending the broadcast data to the receiving station where the transmitting station has not normally ended. And a retransmission means for retransmitting the non-received data only to the non-receiving station.

[0011] An eighth aspect of the invention, the broadcast means and a plurality of transmitting stations and a plurality of receiving stations is plugged in the broadcast receivable communication line, the transmitting station transmits the broadcast data, the Broadcast
A delivery confirmation means for confirming whether sending station independently is the received broadcast data to the receiving station that broadcasts the of identity paper communication means after the communication ends, the transmitting station is only unreceived station unreceived data And periodically retransmitting means for periodically retransmitting the message until it is received.

[0012] A ninth invention, a plurality of transmitting stations and a plurality of receiving stations is plugged in the broadcast receivable communication line, and the broadcast means the transmission station transmits the broadcast data, the Broadcast
End checking means for checking whether or not the receiving station has normally ended the broadcasting means independently of the broadcasting means after the end of communication; and sending the broadcast data to the receiving station where the transmitting station has not normally ended. A transmission confirmation means for confirming whether or not the data has been received, and a periodic retransmission means for periodically retransmitting only the non-receiving station to the non-receiving station until the receiving station receives the non-receiving data. I do.

[0013]

FIG. 1 shows a configuration for realizing the present invention. In actual broadcast communication, a transmitting station 1 and a plurality of receiving stations 2 and 3 are connected by a communication line 4 capable of performing broadcast reception. The transmitting station 1 is composed of a broadcast data generating circuit 11, a storage device 12, and a control circuit 13 for controlling them and transmitting and receiving data. Further, the receiving stations 2 and 3 store data 21 and 31 for storing received data.
And control circuits 22 and 32 for transmitting and receiving data while controlling the storage devices 21 and 31. Although the data generated by the broadcast data generation circuit 11 is broadcast, the data cannot be delivered to all broadcast receiving stations. In the present invention, the delivery of such broadcast data to a non-receiving station is confirmed,
By managing the transmission confirmation means for detecting the unreceived station and the retransmission means for retransmitting the broadcast data to the unreceived station, the broadcast data can be reliably delivered. As a management method in this case, there are a distributed management method and a centralized management method.

The first invention is a broadcast management by a distributed management method. In decentralized management, identification numbers are added to each data so that the receiving station autonomously detects unreceived data .
Unreceived data is detected based on the continuity of. Insight here
Another number is a broadcast communication that controls from opening to disconnection of communication.
It is a number that can be identified when it is performed a plurality of times. A broadcast
If the reception failed at, the next broadcast was received
The previous broadcast because the regularity of the identification number is lost
Can detect that there is unreceived data. The receiving station that has detected the unreceived data, by the requesting means and the transmitting means,
The data is retransmitted from the storage device 12 of the transmitting station 1.

The second invention is a broadcast management by centralized management. This means that after a broadcast, a broadcast
If unsuccessful, check the content received by each receiving station.
And that there was unreceived data in the previous broadcast
Can be detected. The transmitting station 1 is a storage device 21 of all broadcast receiving stations,
31 is confirmed by the delivery confirmation means.

The third invention relates to an identification number for distributed management. The identification number referred here is cut off from the start of communication.
Can be identified when performing multiple broadcasts to control the interruption
Number. Failing to receive on a broadcast
When the next broadcast is received, the regularity of the identification number
Unreceived data from the previous broadcast
Can be detected. There is an integer as a value for which the identification number can be used regularly and repeatedly. It is used repeatedly from 0 to an integer value N that is sufficiently large so that there is no possibility of duplication. This identification number is incremented by one each time broadcast data is generated. Reasons for the identification number to be repeated from N to 0 include a case where data is normally generated and repeated, and a case where the identification number is reset to 0 due to a failure of the transmitting station 1. In order to distinguish between these two factors, the receiving stations 2 and 3 can correctly grasp the state of the transmitting station by means for notifying the fact that the repetition has been normally performed.

The fourth invention is a broadcast management by a distributed management method. The broadcast management of the first invention is also the distributed management, but the fourth invention is to perform the distributed management without using the identification number adding means.

The fifth invention is a broadcast management by a distributed management. According to the present invention, the receiving station detects the unreceived data of its own station when new data is received by the broadcasting means by the identification number, and periodically ends the data independently of the broadcasting means. Then, the identification number of the data transmitted by broadcasting is transmitted to each receiving station by the reporting means. Data transmission can be assured within a certain period of time (periodicity number transmission period) in the distributed management by the identification number sent periodically.

According to a sixth aspect of the present invention, broadcast management is performed while periodically using the identification number of the fifth aspect of the invention to shorten the length of the identification number and improve transmission efficiency.

The seventh invention is a broadcast management by centralized management. By using the normal end confirmation means for confirming the normal termination at the end of the broadcast before the transmitting station confirms the delivery in the centralized broadcast independently of the broadcast means after the end of the broadcast. This is a centralized management system that does not perform a delivery confirmation unit for broadcast data to normally terminated stations.

The eighth invention is a broadcast management by centralized management. According to the present invention, the delivery of data can be guaranteed within a certain period of time (period of periodically performing delivery confirmation) by periodically performing delivery confirmation in the second invention.

The ninth invention is a broadcast management by centralized management. According to the present invention, the delivery of data can be guaranteed within a certain time period (period of periodically performing the delivery confirmation) by periodically sending the delivery confirmation to the seventh invention.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the drawings.

FIG. 2 is a flowchart showing the first embodiment of the present invention. When the control circuit receives data from the data generation circuit, the transmitting station assigns an identification number to the data. The identification number uses an integer n. The control circuit adds an identification number n to the generated data, and controls each receiving station from the establishment of the broadcast line to the disconnection.
Broadcast . The transmitting station stores the transmission data in a storage device. Upon receiving the broadcast data, each receiving station stores the broadcast data in a storage device. Further, the received identification number n is compared with the identification number of the stored received data. in this case,
The data stored in the storage device should be all data of n or less. The same applies when the line is disconnected or suspended.
If broadcast is performed, how much broadcast control is
Even if you have the ability, it will not be delivered. To broadcast
When the data is received, the identification number is n + 1
However, if the broadcast has not been received,
The value is other than n + 1. This discrepancy was caused by a previous broadcast
It means failure. If the last broadcast
If there is any missing data in the received data , the non-received data is requested to the transmitting station. This request is controlled by this broadcast
Independent of broadcast because data retransmission is out of range
The retransmission data is identified by using, for example, an identification number. Upon receiving the request number, the transmitting station transmits the data to the requesting station and manages the delivery of the broadcast data.

FIG. 3 is a flow chart showing the second embodiment of the present invention. When the control circuit receives the data from the data generating circuit, the transmitting station stores the data in the storage device and broadcasts the data to each receiving station. Disconnection
Or, if the broadcast is performed during a pause, the broadcast control
Will not be delivered no matter how much
No. Subsequently, after the broadcast transmission, the transmitting station confirms whether the data transmitted to each receiving station has arrived by the delivery confirming means. As a checking method of the present embodiment, matching is performed using about the first 10 characters of data. As a result, the transmitting station retransmits to the receiving station which cannot be confirmed among the receiving stations,
Manage delivery of broadcast data.

FIG. 4 is a flow chart showing the third embodiment of the present invention. When the control circuit receives the data from the data generation circuit, the transmitting station assigns an identification number to the data. As the identification number, an integer from 1 to 10000 is used as an example. The control circuit adds an identification number to the generated data and broadcasts the data to each receiving station.
Each time data is generated, the identification number is incremented by one.
When the identification number reaches 10,000 and the next data is generated, 1 is assigned as the identification number so that the identification number can be used repeatedly. At this time, the transmitting station notifies each receiving station that the identification number added by the transmitting station is normally repeated. One bit is allocated for this notification, and if this is repeated normally when reporting 1 as the identification number, this bit is assigned 1 and the identification number is restarted from 1 again due to an abnormality such as a system down. When the identification number returns to 1 without being counted up to 10000, 0 is assigned to notify each receiving station that the number is discontinuous.

FIG. 5 is a flowchart showing a fourth embodiment of the present invention. When the control circuit receives data from the data generating circuit, the transmitting station broadcasts the data to each receiving station. The transmitting station stores the transmission data in a storage device. When each receiving station receives this broadcast data, it stores it in the storage device. Broadcasting was performed during line disconnection or suspension
No matter how many times the broadcast control has a retransmission function,
Not delivered. Furthermore, after the end of the broadcast,
The transmitting station transmits information for recognizing the last data of the periodically transmitted data to each receiving station independently of the broadcasting means . For example, the first 10 characters of the transmission data are transmitted. When the receiving station receives the ten characters sent periodically, it checks the data stored in its own station. As a result of the collation, if there is no data that matches the own station, it is determined that there is unreceived data, and the non-received data is requested to the transmitting station. As a method of this request, as an example, 10 characters of the data received last by itself are transmitted. When the transmitting station receives these 10 characters, it checks the data stored in its own station and transmits all data stored after the matched data to the requesting station.

FIG. 6 is a flowchart showing a fifth embodiment of the present invention. When the control circuit receives the data from the data generation circuit, the transmitting station assigns an identification number to the data. The identification number uses an integer n. The control circuit adds an identification number n to the generated data and broadcasts the data to each receiving station. The transmitting station stores the transmission data in a storage device. Broadcast when line is disconnected or suspended
If a broadcast is received, the broadcast control
Even if you have it, it will not be delivered. Upon receiving the broadcast data, each receiving station stores the broadcast data in a storage device. Further, the transmitting station periodically transmits the identification number k of the last transmitted data to each receiving station independently of the broadcast after the end of the broadcast . The receiving station collates this number k with the identification number of the last data stored. In this case, the data stored in the storage device of the receiving station should be all data of k or less. Recognition of the last data received by the receiving station
The other number should be k, but we can receive the broadcast
Otherwise, the value of the identification number is other than k. This discrepancy was before
This means that the broadcast has failed. If before
If there is a missing in the received data in the broadcast , the non-received data is requested to the transmitting station. This request of this time
Data retransmission outside the range controlled by broadcast
Is performed by transmission independent of broadcast communication, and identification of retransmitted data
To use, for example, identification number. Upon receiving the request number, the transmitting station transmits the data to only the requesting station and manages the delivery of the broadcast data.

FIG. 7 is a flowchart showing a sixth embodiment of the present invention. When the control circuit receives the data from the data generation circuit, the transmitting station assigns an identification number to the data. As the identification number, an integer from 1 to 10000 is used as an example. The control circuit adds an identification number n to the generated data and broadcasts the data to each receiving station. The transmitting station stores the transmission data in a storage device. Assuming that broadcast was performed during line disconnection or suspension
No matter how much the broadcast control has a retransmission function, it is delivered
Not something. Each time data is generated, the identification number is incremented by one. When the identification number reaches 10,000 and the next data is generated, 1 is assigned as the identification number so that the identification number can be used repeatedly. At this time, the transmitting station notifies each receiving station that the identification number added by the transmitting station is normally repeated. One bit is allocated for this notification, and if the operation is normally repeated when an 1 is transmitted as the identification number, this bit is allocated 1 and the identification number becomes 1 again due to an abnormality such as a system down.
If the identification number that is to be restarted returns to 1 without being counted up to 10000, 0 is assigned and each receiving station is notified that the number is discontinuous. Upon receiving the broadcast data, each receiving station stores the broadcast data in a storage device. Further, the transmitting station periodically transmits the identification number k of the last transmitted data to each receiving station. The receiving station collates this number k with the identification number of the last data stored. In this case, the data stored in the storage device of the receiving station should be all data of k or less. The receiving station is receiving
The identification number of the last data to be read should be k.
If the broadcast communication has not been received, the value of the identification number
You. This discrepancy means that the previous broadcast failed
doing. If there is any missing in the received data in the previous broadcast communication , a request is made to the transmitting station for unreceived data. This request is for data outside the range controlled by this broadcast.
Data is retransmitted, so transmission is independent of broadcast.
For identification of retransmission data, for example, an identification number is used. Upon receiving the request number, the transmitting station transmits the data only to the requesting station and manages the delivery of the broadcast data.

FIG. 8 is a flowchart showing a seventh embodiment of the present invention. When the control circuit receives the data from the data generating circuit, the transmitting station stores the data in the storage device and broadcasts the data to each receiving station. Disconnection
Or, if the broadcast is performed during a pause, the broadcast control
Will not be delivered no matter how much
No. Subsequently, after the end of the broadcast communication, it is independent of the broadcast communication means.
Then, the transmitting station checks with each receiving station whether the receiving station has been normally completed. Upon receiving the data, the receiving station stores the data in its own storage device. When receiving the completion confirmation command, if there is no abnormality in the receiving process of the own station, the own station is notified of the normality to the transmitting station. Also, if there is an abnormality in the process and there is data that cannot be received normally, the fact is notified to the transmitting station. The transmitting station retransmits unreceived data to a station that has not completed normally. As a method of specifying unreceived data according to the present embodiment, matching is performed using about the first 10 characters of data. Thereby, data is searched between the transmitting station and the receiving station having unreceived data, and the transmitting station retransmits the data, and manages the delivery of the broadcast data.

FIG. 9 is a flowchart showing an eighth embodiment of the present invention. When the control circuit receives the data from the data generating circuit, the transmitting station stores the data in the storage device and broadcasts the data to each receiving station. Disconnection
Or, if the broadcast is performed during a pause, the broadcast control
Will not be delivered no matter how much
No. Subsequently, after the end of the broadcast communication, it is independent of the broadcast communication means.
Then, the transmitting station confirms whether the data transmitted to each receiving station has arrived by the delivery confirming means. As a checking method of the present embodiment, matching is performed using about the first 10 characters of data. As a result, the transmitting station retransmits to the receiving station which cannot be confirmed among the receiving stations, and manages the delivery of the broadcast data. Further, the transmitting station periodically repeats transmission confirmation and data retransmission until there is no unreceived data for unreceived stations.

FIG. 10 is a flowchart showing a ninth embodiment of the present invention. When the control circuit receives the data from the data generating circuit, the transmitting station stores the data in the storage device and broadcasts the data to each receiving station. Line
If the broadcast is performed when the communication is interrupted or suspended, the broadcast
No matter how much resend function you have,
Absent. Then, after the end of the broadcast , the broadcast
First, the transmitting station checks with each receiving station whether the receiving station has been normally completed. Upon receiving the data, the receiving station stores the data in its own storage device. When receiving the end confirmation command, if the own station has no abnormality in the receiving process, it informs the transmitting station that it is normal. Also, if there is an abnormality in the process and there is data that cannot be received normally, the fact is notified to the transmitting station. The transmitting station retransmits the unreceived data to the station that has not been normally terminated. As a method of specifying unreceived data according to the present embodiment, matching is performed using about the first 10 characters of data. Thereby, data is searched between the transmitting station and the receiving station having unreceived data, and the transmitting station retransmits the data, and manages the delivery of the broadcast data. Further, the transmitting station periodically repeats the transmission confirmation and the data retransmission to the unreceived station until there is no unreceived data.

[0033]

As described above in detail, according to the present invention, the effect that each receiving station guarantees equal reliability with respect to the broadcast data and the effect of distributing the load of the broadcast management by the request of the receiving station are provided. is there.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of the present invention.

FIG. 2 is a flowchart showing an embodiment of the first invention.

FIG. 3 is a flowchart showing an embodiment of the second invention.

FIG. 4 is a flowchart showing an embodiment of the third invention.

FIG. 5 is a flowchart showing an embodiment of the fourth invention.

FIG. 6 is a flowchart showing an embodiment of the fifth invention.

FIG. 7 is a flowchart showing an embodiment of the sixth invention.

FIG. 8 is a flowchart showing an embodiment of the seventh invention.

FIG. 9 is a flowchart showing an embodiment of the eighth invention.

FIG. 10 is a flowchart showing an embodiment of the ninth invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transmitting station 2, 3 Receiving station 4 Communication line 11 Broadcast data generation circuit 12 Storage device 13 Control circuit 21, 31 Storage device 22, 32 Control circuit

Claims (5)

(57) [Claims] A plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of broadcast reception, and a plurality of broadcast stations receive data from a plurality of broadcast data.
Broadcast management method in a series of broadcasts
In the broadcast data to be transmitted, a unique
An identification number is assigned so as to have regularity, and the transmitting station broadcasts the broadcast data with the identification number.
And when the receiving station receives the broadcast data,
Data before the reception using the identification number assigned to the data.
Unreceived data of the broadcast data of the
Unreceived data is transmitted by a transmission procedure independent of a series of broadcasts.
Request, and the transmitting station transmits the requested data only to the requesting station.
A broadcast management method. 2. A plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of broadcast reception, and a number which can be used continuously and repeatedly is added to data transmitted by the transmitting station. the data marked with a identification number broadcasts, broadcast management method and notifies that it has been repeated correctly when the identification number is repeatedly used. 3. A plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of receiving broadcasts, and a plurality of broadcast stations receive data from a plurality of broadcast data.
A broadcast management device in a series of broadcasts
The transmitting station broadcasts the broadcast data,
Transmission procedure independent of the series of broadcasts after the communication is completed
Periodically checks what the last broadcast data sent by the transmitting station is
To the receiving station, and the receiving station notifies the receiving station of the unreceived data by the notification.
Detecting, requesting the detected unreceived data to the transmitting station, and transmitting the requested data only to the requesting station.
A broadcast management method. From wherein a plurality of multiple be connected with the transmitting station and a plurality of receiving stations in the broadcast receivable communication lines of the broadcast data
A broadcast management device in a series of broadcasts
In the broadcast data to be transmitted, a unique
Assign an identification number so that it has regularity, and the transmitting station
Broadcast the broadcast data with the identification number,
After the end of the broadcast, transmission independent of the series of broadcasts
Determine the last broadcast data sent by the transmitting station in the procedure.
The receiving station periodically notifies the receiving station of the unreceived data of the receiving station.
Detecting, requesting the detected unreceived data to the transmitting station, and transmitting the requested data only to the requesting station.
A broadcast management method. 5. A plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of broadcast reception, and a plurality of broadcast stations receive data from a plurality of broadcast data.
A broadcast management device in a series of broadcasts
To determine whether the broadcast data to be transmitted is
And the transmitting station broadcasts the broadcast data with the identification number.
The ID number repeats correctly when the identification number is used repeatedly.
After the end of the series of broadcast communications
The transmitting station performs a transmission procedure independent of the series of broadcasts.
Periodically receives the identification number of the broadcast data sent last.
Report to the bureau, receive the broadcast data, and
The identification number and the identification number notified by the notification.
Untransmitted data is detected, the untransmitted data is requested, and the transmitting station transmits the requested data only to the requesting station.
A broadcast management method, comprising: