JPH06141028A - Broadcast communication managing system - Google Patents

Abstract

PURPOSE:To manage the transmission data of broadcast communication by the control of a reception station by transmitting reception data from the storage device of a transmission station by a request means and a transmission means to the reception station detecting unreceived data. CONSTITUTION:The transmission station 1, when a control circuit 13 receiving data from a data generation circuit 11, attaches an identification number on the data. An integer (n) is used as the identification number. The circuit 13 performs the broadcast communication of the data on which the identification number is attached to the reception stations 2, 3, and also, it is stored in the storage device 12. The reception stations 2, 3, when receiving broadcast communication data, store it in the memory devices 21, 31. Furthermore, control circuits 22, 32 compare a received identification number (n) with the identification number of reception data. When omission is found out in stored data, the unreceived data is requested to the transmission station. The identification number (n) is used when such request is issued. The transmission station 1, when receiving a request number, transmits the data to a requesting station, and manages the transmission/arrival of the broadcast communication data.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, in broadcast communication, the delivery confirmation of each packet has been confirmed by the acknowledge of the receiving station. As a method of returning the acknowledge, there is a method in which each receiving station directly returns to the broadcast transmitting station, or a method in which a relay station collects acknowledges from each receiving station and returns it to the broadcast transmitting station. However, the problem with broadcast communication is that some of the broadcast receiving stations cannot start communication, or some stations cannot receive due to some failure during communication. That is. If an attempt is made to keep the delivery quality of the broadcast communication even when such a station occurs, the broadcast communication becomes completely impossible if some stations cannot start the communication. Further, if a line failure occurs even in one station during communication, subsequent broadcast communication becomes impossible. In this way, although not all broadcast receiving stations can always receive normally, it is not desirable that the communication be cut off for only one station. For example, when performing broadcast communication to 100 stations, even if communication to one station is not possible, if the broadcast communication to other 99 stations is possible, the communication amount is 1/99 as compared to the case of performing one-to-one communication. It will decrease to. Therefore, even if there is a station that cannot receive the broadcast communication, the communication line can be effectively used if the broadcast communication is performed. It is necessary to guarantee the transmission data equally to the stations that could not be received normally.

[0003]

The problem to be solved by the present invention is that normal broadcasting cannot be received when broadcasting is performed even when broadcasting is not completely possible to all stations as described above. It means that no measures have been taken to manage the station and guarantee the data to the station. The present invention solves this problem and provides means for maintaining equal delivery quality for each receiving station.

[0004]

As means for solving the above-mentioned problems in the present invention, the first invention is that a plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of broadcast reception. The identification number adding means for giving an identification number having regularity peculiar to the data transmitted by the transmitting station, the broadcast communication means for broadcasting the data with the identification number, and receiving the data, It is characterized in that it comprises a detecting means for detecting unreceived data by the identification number, a requesting means for requesting unreceived data, and a transmitting means for transmitting data requested by the transmitting station by the transmitting station. .

According to a second aspect of the 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 transmits broadcast data, and a transmitting station. It is characterized by comprising delivery confirmation means for confirming whether or not the broadcast data is received by the receiving station which has broadcast, and retransmitting means for retransmitting the unreceived data to the unreceived station.

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

According to a fourth aspect of the 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 transmits broadcast data, and the transmitting means. The notification means for periodically informing the receiving station of what is the last broadcast data sent by the station, the detecting means for detecting the unreceived data of the own receiving station from the notifying means, and the detected unreceived data It is characterized in that it comprises requesting means for requesting the transmitting station and transmitting means for transmitting the data requested by the requesting means.

According to a fifth aspect of the invention, a plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of receiving a broadcast, and an identification number having a regularity peculiar to the broadcast data transmitted by the transmitting stations. An identification number adding means for adding a number, a broadcast communication means for broadcasting broadcast data having an identification number, and a notification for periodically notifying the receiving station of the identification number of the last broadcast data transmitted by the transmitting station. Means, receiving means for receiving the broadcast data, detecting means for detecting unreceived data by the identification number added to the broadcast data and the identification number notified by the notifying means, and request means for requesting the unreceived data The transmitting station comprises a transmitting means for transmitting the data requested by the requesting means.

According to a sixth aspect of the 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 continuously and repeatedly used for data transmitted by the transmitting stations. An identification number adding means for adding a number, a notification means for notifying that the identification number is normally repeated when repeatedly used, and a broadcast communication means for broadcasting the broadcast data with the identification number A notification means for periodically notifying the receiving station of the identification number of the broadcast data sent last by the transmitting station, and the identification number and the notification means for receiving the broadcast data and added to the broadcast data. A detection means for detecting the unreceived data by the notified identification number, a request means for requesting the unreceived data, and a transmitting means for transmitting data requested by the transmitting station. Special To.

According to a seventh aspect of the invention, a plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of receiving broadcast, and the transmitting station transmits broadcast data, and the receiving means. An end confirmation means for confirming whether the station normally terminates the broadcast communication means, a delivery confirmation means for confirming whether the broadcast data is received by the receiving station where the transmitting station has not normally terminated, It is characterized by comprising retransmitting means for retransmitting unreceived data to the receiving station.

According to an eighth 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 broadcast, and the transmitting station transmits broadcast data, and a transmitting station. A delivery confirmation means for confirming whether the broadcast data is received by the receiving station that has broadcast, and a regular retransmitting means for periodically retransmitting until the receiving station receives the unreceived data by the transmitting station. It is characterized by being done.

According to a ninth 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 broadcast, and the transmitting station transmits broadcast data, and the receiving means. An end confirmation means for confirming whether the station normally terminates the broadcast communication means, a delivery confirmation means for confirming whether the broadcast data is received by the receiving station where the transmitting station has not normally terminated, It is characterized by comprising a regular retransmission means for periodically retransmitting unreceived data to the receiving station until the receiving station receives the data.

[0013]

FIG. 1 shows a structure 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 receiving broadcast. The transmitting station 1 comprises a broadcast data generating circuit 11, a storage device 12, and a control circuit 13 for controlling them and transmitting and receiving data. Also,
The receiving stations 2 and 3 are storage devices 21 and 3 for storing received data.
1 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 broadcasted, it may not be delivered to all broadcast receiving stations. In the present invention,
By controlling delivery by means of delivery confirmation means that confirms delivery to such unreceived stations and detects unreceived stations, and retransmit means that retransmits the broadcast data to unreceived stations, It is possible to reliably deliver the report data. As a management method in this case, there are a distributed management method and a centralized management method.

The first invention is broadcast management by a distributed management method. In the decentralized management, the receiving station autonomously detects the unreceived data, so that an identification number is added to each data and the unreceived data is detected by the continuity of the numbers. The receiving station which has detected the unreceived data has the requesting means and the transmitting means retransmit the data from the storage device 12 of the transmitting station 1.

The second invention is broadcast management by centralized management. After the broadcast communication, the transmitting station 1 confirms the contents of the storage devices 21 and 31 of all the broadcast receiving stations by the delivery confirmation means.

The third invention is an invention relating to an identification number for distributed management. An integer is a value that allows the identification number to be used regularly and repeatedly. Iterate from 0 to an integer value N large enough that there is no possibility of overlap. This identification number is incremented by 1 each time broadcast data is generated. Factors in which the identification number is repeated from N to 0 include the case where data is normally generated and repeated, and the 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 grasp the accurate state of the transmitting station by means of notifying it when it is normally repeated.

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

The fifth aspect of the invention is broadcast management by distributed management. According to the present invention, the receiving station detects unreceived data of its own station when new data is received by the broadcast communication means by the identification number, and periodically notifies the identification number of the last data sent by the broadcast means. To send to each receiving station. With this identification number sent periodically, it is possible to guarantee the delivery of data within a certain time (period to send the identification number regularly) even in distributed management.

A sixth aspect of the invention is to perform broadcast management while periodically using the identification number of the fifth aspect to shorten the identification number length and improve the transmission efficiency.

The seventh aspect of the invention is broadcast management by centralized management. By using the normal termination confirmation means that confirms the normal termination at the end of the broadcast communication before the sending station confirms the delivery in the centralized broadcast communication, This is a centralized management method that does not use the delivery confirmation means.

The eighth invention is broadcast management by centralized management. In the present invention, the delivery confirmation of the second invention is performed periodically, so that the delivery of the data can be guaranteed within a certain period of time (the cycle of periodically confirming the delivery).

The ninth invention is broadcast management by centralized management. In the present invention, the delivery confirmation of the seventh invention is performed periodically, so that the delivery of the data can be guaranteed within a certain period of time (the period for periodically confirming the delivery).

[0023]

The present invention will be described in detail with reference to the drawings.

FIG. 2 is a flow chart showing the first embodiment of the present invention. When the control circuit receives the data from the data generating circuit, the transmitting station gives an identification number to the data. The identification number uses the integer n. The control circuit adds the identification number n to the generated data and broadcasts it to each receiving station. The transmitting station also stores this transmission data in the storage device. When each receiving station receives this broadcast data, it stores it in the storage device. Further, the received identification number n is compared with the stored identification number of the received data. In this case, the data stored in the storage device should be all data of n or less. if,
If there is missing data, it requests untransmitted data from the transmitting station. The request uses, for example, an identification number. When the transmitting station receives the request number, it 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 simultaneously broadcasts the data to each receiving station. Subsequently, after the broadcast transmission, the transmitting station confirms whether the data sent to each receiving station has arrived by the delivery confirmation means. As a confirmation method of the present embodiment, matching is performed with about the first 10 characters of data. As a result, the transmitting station retransmits to each of the receiving stations that cannot be confirmed, and manages the delivery of the 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 generating circuit, the transmitting station gives an identification number to the data. As the identification number, an integer of 1 to 10000 will be used as an example. The control circuit adds an identification number to the generated data and broadcasts it to each receiving station.
The identification number is incremented by 1 each time data is generated.
When this identification number reaches 10000 and the next data is generated, 1 is assigned as the identification number in order to use the identification number repeatedly. At this time, the transmitting station notifies each receiving station that the identification number added by itself is normally repeated. 1 bit is allocated for this notification, and when this is normally repeated when 1 is notified as an identification number, this bit is allocated 1 and the identification number is restarted from 1 again due to an abnormality such as system down. When the identification number is not counted up to 10000 and returns to 1 as described above, 0 is assigned and each receiving station is notified that the numbers are discontinuous.

FIG. 5 is a flow chart showing the fourth embodiment of the present invention. When the control circuit receives the data from the data generating circuit, the transmitting station broadcasts the data to each receiving station. The transmitting station also stores this transmission data in the storage device. When each receiving station receives this broadcast data, it stores it in the storage device. Further, the transmitting station transmits information for recognizing the last data of the regularly transmitted data to each receiving station. For this, for example, the first 10 characters of the transmission data are transmitted. When the receiving station receives the 10 characters sent periodically, it collates with the data stored in itself. As a result of the collation, if there is no match for the own station, it is determined that there is unreceived data, and the unreceived data is requested to the transmitting station. As a method of making this request, for example, 10 characters of the last data received by the user will be transmitted. When the transmitting station receives these 10 characters, it collates with the data stored by itself and transmits all the data stored after the matched data to the requesting station.

FIG. 6 is a flow chart showing the fifth embodiment of the present invention. When the control circuit receives the data from the data generating circuit, the transmitting station gives an identification number to the data. The identification number uses the integer n. The control circuit adds the identification number n to the generated data and broadcasts it to each receiving station. The transmitting station also stores this transmission data in the storage device. When each receiving station receives this broadcast data, it stores it in the 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. If missing, request unreceived data from the transmitting station. The request uses, for example, an identification number. When the transmitting station receives the request number, it transmits the data to the requesting station and manages the delivery of the broadcast data.

FIG. 7 is a flow chart showing the sixth embodiment of the present invention. When the control circuit receives the data from the data generating circuit, the transmitting station gives an identification number to the data. As the identification number, an integer of 1 to 10000 will be used as an example. The control circuit adds the identification number n to the generated data and broadcasts it to each receiving station. The transmitting station also stores this transmission data in the storage device. The identification number is incremented by 1 each time data is generated. When this identification number reaches 10000 and the next data is generated, 1 is assigned as the identification number in order to use the identification number repeatedly. At this time, the transmitting station notifies each receiving station that the identification number added by itself is normally repeated. 1 bit is allocated for this notification, and when this is normally repeated when 1 is notified as an identification number, this bit is allocated 1 and the identification number is restarted from 1 again due to an abnormality such as system down. When the identification number is not counted up to 10000 and returns to 1 as described above, 0 is assigned and each receiving station is notified that the numbers are discontinuous. When each receiving station receives this broadcast data, it stores it in the 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. If missing, request unreceived data from the transmitting station. The request uses, for example, an identification number. When the transmitting station receives the request number, it transmits the data to the requesting station and manages the delivery of the broadcast data.

FIG. 8 is a flow chart showing the 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 simultaneously broadcasts the data to each receiving station. Subsequently, after the broadcast transmission, the transmitting station confirms with each receiving station whether the receiving station has completed normally. When the receiving station receives the data, the receiving station stores the data in its own storage device. Further, when receiving the command for confirming the end, if the local station has no abnormality in the receiving process, it sends a normal message 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 the unreceived data to the station that has not completed normally. As a method of identifying unreceived data in the present embodiment, matching is performed by using the first 10 characters of the data. As a result, data is searched between the transmitting station and the receiving station having unreceived data, the transmitting station retransmits the data, and the delivery of the broadcast data is managed.

FIG. 9 is a flow chart showing the 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 simultaneously broadcasts the data to each receiving station. Subsequently, after the broadcast transmission, the transmitting station confirms whether the data sent to each receiving station has arrived by the delivery confirmation means. As a confirmation method of the present embodiment, matching is performed with about the first 10 characters of data. As a result, the transmitting station retransmits to each of the receiving stations that cannot be confirmed, and manages the delivery of the broadcast data. Further, the transmitting station periodically repeats the delivery confirmation and the data retransmission to the unreceived station until there is no unreceived data.

FIG. 10 is a flow chart showing the 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 simultaneously broadcasts the data to each receiving station. Subsequently, after the broadcast transmission, the transmitting station confirms with each receiving station whether the receiving station has completed normally. When the receiving station receives the data, the receiving station stores the data in its own storage device. Further, when receiving the command for confirming the end, if the local station has no abnormality in the receiving process, it sends a normal message 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 the unreceived data to the station that has not completed normally. As a method of identifying unreceived data in the present embodiment, matching is performed by using the first 10 characters of the data. As a result, data is searched between the transmitting station and the receiving station having unreceived data, the transmitting station retransmits the data, and the delivery of the broadcast data is managed. Further, the transmitting station periodically repeats the delivery confirmation and the data retransmission to the unreceived station until there is no unreceived data.

[0033]

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

[Brief description of 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]

 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 (9)

[Claims] 1. An identification number addition, wherein a plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of receiving a broadcast, and an identification number having regularity peculiar to data transmitted by the transmitting stations is attached. Means, broadcast communication means for broadcasting data with an identification number, detection means for receiving the data and detecting unreceived data by the identification number, request means for requesting unreceived data, and the transmission A broadcast communication management system, comprising: a transmitting unit for transmitting data requested by the station. 2. A plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of receiving broadcast, and the transmitting station transmits broadcast data and the transmitting station broadcasts. A broadcast communication management method comprising delivery confirmation means for confirming whether the broadcast data has been received by the receiving station, and retransmitting means for retransmitting the unreceived data to the unreceived station. 3. A plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of broadcast reception, and a number that can be continuously and repeatedly used is added to data transmitted by the transmitting stations. Broadcast communication including identification number adding means, broadcast communication means for broadcasting data with the identification number, and notifying means for notifying that the identification number has been normally repeated when repeatedly used Management method. 4. A plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of receiving broadcast, and the transmitting station transmits the broadcast data, and the transmitting station is the last. To the receiving station for periodically notifying the receiving station what the broadcast data sent to the receiver is, detecting means for detecting unreceived data of the own receiving station from the notifying means, and detecting the unreceived data detected by the transmitting station. And a transmitting means for transmitting data requested by the requesting means by the transmitting station. 5. An identification in which a plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of receiving a broadcast, and the broadcast data transmitted by the transmitting station is provided with an identification number having a unique regularity. Number adding means, broadcast communication means for broadcasting broadcast data with an identification number, reporting means for periodically notifying the receiving station of the identification number of the broadcast data last sent by the transmitting station, Detection means for receiving the broadcast data and detecting unreceived data by the identification number added to the broadcast data and the identification number notified by the notification means; request means for requesting the unreceived data; and the transmission A broadcast communication management system, comprising: a transmitting unit for transmitting data requested by the station. 6. A plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of broadcast reception, and a number that can be continuously and repeatedly used is added to data transmitted by the transmitting stations. Identification number adding means, notification means for notifying that the identification number has been normally repeated when repeatedly used, broadcast communication means for broadcasting broadcast data with an identification number, and the transmitting station A notification means for periodically notifying the receiving station of the identification number of the last broadcast data sent by,
Detection means for receiving the broadcast data and detecting unreceived data by the identification number added to the broadcast data and the identification number notified by the notification means; request means for requesting the unreceived data; and the transmission A broadcast communication management system, comprising: a transmitting unit for transmitting data requested by the station. 7. A plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of receiving broadcast, and the transmitting station transmits the broadcast data, and the receiving station includes Termination confirmation means for confirming whether the broadcast communication means has been normally terminated, delivery confirmation means for confirming whether the broadcast data has been received by the receiving station where the transmitting station has not normally terminated, and unreceived station A broadcast communication management method including a retransmission means for retransmitting unreceived data. 8. A plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of receiving broadcast, and the transmitting station transmits the broadcast data, and the transmitting station broadcasts. Broadcasting provided with delivery confirmation means for confirming whether the broadcast data has been received by the receiving station and periodic retransmitting means for periodically retransmitting until the receiving station receives unreceived data by the transmitting station. Communication management method. 9. A plurality of transmitting stations and a plurality of receiving stations are connected by a communication line capable of receiving the broadcast, and the transmitting station transmits the broadcast data, and the receiving station includes the broadcast communication means. Termination confirmation means for confirming whether the broadcast communication means has been normally terminated, delivery confirmation means for confirming whether the broadcast data has been received by the receiving station where the transmitting station has not normally terminated, and unreceived station On the other hand, a broadcast communication management system including a regular retransmission means for periodically retransmitting unreceived data until the receiving station receives it.