JPH0681125B2 - Communication line switching device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a communication line switching technique, and more particularly to a communication line switching device for performing line switching to a backup system communication line when a communication line failure occurs.

[Conventional technology]

Conventionally, in the case where this type of communication line switching device is applied, the communication line is composed of a pair of uplink and downlink, and each station on the receiving end side can check all the fault conditions, so that the uplink and downlink are independent. It was a one-way switching method to switch.

[Problems to be Solved by the Invention] Since the above-mentioned conventional communication line switching device is of a one-way switching system, when different faults occur in the opposite station A and station B, both stations To determine the most important one of the fault occurrence states, determine the system number of the communication line for the active system with the highest priority, and respond to the request to switch both uplink and downlink simultaneously, There is a drawback in that switching time is long because the downlinks are switched in order.

Further, if switching is executed only on one side based on the failure status of station A and the failure status of station B, the switching processing of station B is executed after the switching processing is completed from station A, and then station A and station B・
There is also a drawback that it is easy to fall into a situation where switching is never completed because switching is performed. As a solution to this drawback, there is a method of constantly notifying the communication line switching device of the opposite station of the failure status of each other's station and comprehensively judging the situation of the own station and the opposite station and entering the switching procedure. However, in this case, depending on the timing, the fault content of the own station may change immediately after notifying the fault condition to the partner station, in which case both stations may switch to different systems.

An object of the present invention is to provide a communication line switching device that eliminates the above drawbacks.

[Means for solving problems]

To achieve the above object, the present invention is a communication line switching device for switching from a communication line for an active system to a communication line for a standby system when a communication line fails, and a means for collecting a failure status of the communication line. And a communication means for transmitting and receiving information to and from a communication line switching device of a game, and a judging means for judging the collected failure status information and the received information, wherein the judging means is From the information, the highest priority switching request system number and fault weighting are determined as parameters for switching processing, stored, and notified to the communication line switching device of the opposite station via the communication means, and notified to the opposite station. Compares the parameter that has been made with the parameter consisting of the highest priority switching request system number of the game and the fault weighting, and continues or cancels the switching. In the case of cancellation, a game device change flag is prepared in advance and is set, and when the game device change flag is set, a new switching is started. .

〔Example〕

FIG. 1 is a configuration diagram of a system including an embodiment of a communication line switching device of the present invention.

When both ends of the communication line 2 composed of the opposite terminating device 1 and the communication path are set as the A station and the B station, respectively, the communication line 2 includes a plurality of active system communication lines (system 1, system 2 ,.
.., system N) and one or more backup system communication lines. A communication line switching device having a function of switching the communication line of the active system to a communication line of the standby system and a function of switching back so as to sandwich these communication line groups is provided. This communication line switching device,
Line switching unit 3 and line switching control unit 4 that controls the line switching unit
It consists of and. The line switching control unit 4 transmits / receives information to / from a line fault information collecting unit 6 that collects all fault occurrence states, a control unit 8 that switches lines, and an opposite communication line switching device and information via a line switching device communication path 10. Communication unit 9
And an information processing unit 7 for making a judgment on the information obtained by the line fault information collecting unit 6 and the information sent via the communication path 10.

Next, the operation of this embodiment will be described with reference to FIGS.

2 to 4 explain the switching processing procedure of the present embodiment, FIG. 2 describes the switching information determination processing, and FIG. 3 shows the determination processing of FIG. FIG. 4 describes the processing at the time of receiving the switching permission / non-permission command in FIG.

The line fault information collection unit 6 collects the line fault information a sent from each terminating device 1 and sends it to the information processing unit 7. As shown in FIG. 2, the information processing unit 7 checks the failure status (step 21), and determines the highest priority switching request system number and the failure weighting from the failure occurrence information as the parameters for the switching processing ( (Step 22), compare with the parameters already stored (Step 23), and check whether or not the contents of the parameter have changed (Step 23).
twenty four). If there is a change, the highest priority switching request system number and fault weight are updated and stored (step 2
Five). If there is no change, the flag indicating that the game device has changed is checked (step 26). The highest priority switching request system number and the fault weighting determined and stored as described above are notified to the game station (step 27), and the switching permission / impossible notification is awaited (step 28).

The game communication line switching device checks the content received from the game (step 29) and, if there is received information, processes it (step 30).

The in-game reception information processing (step 30) in the above-mentioned switching processing procedure will be described in more detail with reference to FIG.

The information in the line switching device signal c received from the playing device via the communication path 10 and the communication unit 9 is checked (step 3
1), and compares with the parameters determined and stored in the own station device (step 32). If the own station parameter ≦ the other game parameter, the switch permission is notified to the other player device (step 33). Then, it waits for the switching command (step
When the switching command is received (step 35), the information processing section 7 sends a line switching control signal b to the line switching section 3 to switch the line (step 36). Own parameter>
In the case of the game parameter, the game device is notified that switching is not possible (step 37), and if the trouble content of the game is changing, the game device change flag is set (step 37)
38). When the flag is set, a new switch is started.

Switching permission / switching in the switching information determination process described in FIG.
The process at the time of receiving the disapproval notice will be described with reference to FIG. First, the reception information in the inter-line switching device signal c received by the communication unit 9 is checked (step 41). When the permission notification is received, the line switching process of the own station is performed (step 42),
The switching device is notified of the switching instruction (step 43). on the other hand,
When the disapproval notice is received, the switching process is stopped (step 44).

The communication line switching device always repeats the switching device described above. According to such a switching process, the switching procedure can be surely performed by comprehensively judging the information of both stations, and this is continuously executed after the change of the state of the partner station is detected. Therefore, the time required for the switching process is not prolonged.

FIG. 5 and FIG. 6 are diagrams showing typical cases in which a line fault has occurred, and the processing procedure of the communication line switching device will be described from top to bottom in chronological order with reference to these figures.

In case 1 shown in FIG. 5, it is assumed that a large fault with a high line fault has occurred in system N and a medium fault with a medium line fault has occurred in system M. Station A detects the failure of system N, while station B detects the failure of system M. Station A sends a request to switch system N to station B, while station B sends a request to switch system M. Both station A and station B determine their priority. In this case, since the system N has a higher priority, the station A notifies the station B of the switching stop (switching impossible), while the station B notifies the station A of the switching process continuation (switching permission). , Waiting to receive the switching command. When the station A receives the notification of the continuation of the switching process, it performs the line switching process of the system N and then notifies the station B of the switching command. Upon receiving this switching instruction, the B station performs the line switching process of the system N.

In case 2 shown in FIG. 6, a large failure occurs in system N, and after station A requests station B to switch, this failure changes to a small failure with a low degree of failure, while system M suffers a medium failure. Is assumed to occur and this will continue.

In the stage before the system N is changed from the major fault to the minor fault, both the stations A and B are in the state of switching the line of the system according to the procedure described in the case 1. In this state, if the system N changes to a small fault, the station A sends a switching request for the system N to the station B. Upon receiving this switching request, the B station judges the priority. In this case, since the system M has a higher priority, the station B notifies the station A of the switching stop and sets the player device change flag. When the flag is set, a new switching process for the system M is started. As a result, station B sends a request for switching the system M to station A, and when station A receives this request for switching, it determines the priority. In this case, since the system M has a higher priority, the station A notifies the station B of the continuation of the switching process and waits for the reception of the switching command. Upon receiving the notification of continuation of the switching process, the B station processes the line switching of the system M and then
Notify the station of the switching instruction. Upon receiving this switching command, the station A performs the line switching process of the system M.

This is because the line failure degree is lowered by providing the game device change flag. It is possible to promptly perform switching to a system that was not switched due to the low fault weighting last time.

〔The invention's effect〕

As described above, according to the present invention, it is possible to realize line switching without a time lag by constantly checking the failure occurrence status and notifying the game device of the switching request.

Further, according to the present invention, the switching means can be surely performed by comprehensively judging the information of both stations, and this is continuously executed after the change of the state of the partner station is detected. It does not prolong the time required for.

Further, according to the present invention, by providing the player device change flag, it is possible to promptly perform switching to a system that could not be switched because the previous fault weighting was low due to the low line fault degree. .

[Brief description of drawings]

FIG. 1 is a diagram showing an entire system including a communication line switching device of the present invention, FIG. 2 is a diagram for explaining switching information determination processing, and FIG. 3 is a game reception in the determination processing shown in FIG. FIG. 4 is a diagram for explaining an information processing part, FIG. 4 is a diagram for explaining processing when a switching permission / prohibition command is received, and FIGS. 5 and 6 are diagrams for explaining typical cases of a line fault occurrence state. FIG. 1 ... Terminal device 2 ... Communication line 3 ... Line switching unit 4 ... Line switching control unit 6 ... Line fault information collection unit 7 ... Information processing unit 8 ... Line switching unit control unit 9 ... Communication Part 10: Communication line between line switching devices a: Line fault information b: Line switching control signal c: Line switching device signal

Claims (1)

[Claims] 1. A communication line switching device for switching from a communication line for an active system to a communication line for a standby system when a communication line fails, a means for collecting a failure status of the communication line, and a communication line switching for a game. In a communication line switching device comprising a communication means for transmitting and receiving information to and from the device, and a judgment means for judging the collected failure status information and the received information,
The determining means determines the highest priority switching request system number and the failure weighting from the information on the failure status as parameters for switching processing, stores the parameters, and stores the communication line of the opposite station via the communication means. Notify the switching device, compare the parameter notified to the game with the parameter consisting of the highest priority switching request system number of the game and the parameter consisting of failure weighting, judge whether to continue switching or cancel, and cancel In this case, a communication device change flag is prepared in advance, and when the flag is set, and when the game device change flag is set, a new switching is started.