KR20000073139A - Retransmission Period Determine Method Of Interlock Telecommunication Device - Google Patents

Abstract

PURPOSE: A method for deciding a retransmitting time between interlocking communication equipments is provided to perform a retransmission for a failed command at a busy hour of interlocking equipments according to command characteristics, and to retransmit the failed command within a limit time, so as to remove damages and popular discontent caused by a late transmission of the failed command to improve reliability and stability of equipment operations. CONSTITUTION: An equipment processor decides whether a command requested from a client equipment to a server equipment is normally transmitted. The equipment processor analyzes a grade and a limit time of a failed command through a set up table when a command failed to transmit is detected, and sets up a limit time and a time for retransmissions. The equipment processor stores a set up command of the limit time and the time for the retransmissions to a corresponding place of a designated memory region. The equipment processor detects a priority of a stored retransmission command, and performs the retransmission command to a corresponding point.

Description

Retransmission Period Determine Method Of Interlock Telecommunication Device

The present invention relates to a communication method between devices interworking in a communication network, and more particularly, when a command transmission required in communication between interworking devices fails, the transmission failure is determined by determining the retransmission time according to the spatial condition and the class of the command. The present invention relates to a method of determining retransmission time between interworking communication equipments to minimize the damage caused by data inconsistency between equipments that interoperate with the efficiency of equipment operation by retransmitting the command.

In general, the communication services provided in the modern communication network become more complicated and enormous according to their quality and variety, so that all the functions cannot be included in one equipment.

Therefore, the designer of the communication network or the producer of the equipment composes a device having unique functions and configures a complex network that can be interlocked with the equipment to which a block in charge of interworking functions is added when different functions are needed and related functions. It defines the interface that enables the interaction between the devices that have the system.

At this time, the interface between each device located in the communication network is composed of the operation of acquiring the information or function required for the corresponding device to the other device to obtain the result of the other device and the operation of matching the data between the two devices in a batch. It is done.

However, inconsistency of data between devices caused by failure of interworking command due to internal problem of devices constituting communication network or network problem between devices causes inconvenience to communication service user. For the treatment, the customer center runs a huge amount of money each year.

Therefore, producers of equipment design and configure stable networks to fundamentally resolve data inconsistencies, and recover data inconsistencies quickly through command retransmission in case of interlocking command failures.

Most communication equipment that is currently configured to provide a variety of services in the communication network is composed of the concept of a server and a client, which can be seen in the attached Figure 1, equipment A (10) and equipment B (20) in the communication network Assuming that is located, if the function or data necessary for the equipment A (10) is implemented in the equipment B (20), the equipment A (10) as a client, the equipment B (20) is called a server, the equipment A ( 10) to connect the equipment B (20) to obtain the information or functions required by the equipment A (10) from the equipment B (20).

The operation for this is that the client device A 10 requests the connection of the communication channel to the server device B 20, the server device B 20 is connected to the communication channel according to the request of the client device A (10) It authorizes the communication channel between the client equipment A (10) and the server equipment B (20).

As described above, the device A 10, which is a client, in the state in which the communication channel between the device A 10 and the device B 20 is connected, is set in the device B 20 while performing various commands according to a function assigned thereto. If it is determined that the use of the function or information and data is necessary, the function B and the information required to be used by the equipment B 20 through the connected communication channel are transmitted to the equipment B 20 using an appropriate command and a predefined data format. Ask for the command.

At this time, the equipment B 20 as a server analyzes a command required by the equipment A 10 as a client, and then responds to the equipment A 10 as a response to the corresponding device or information and data. Allows the user to perform functions or analyze the information and data.

On the other hand, the communication between the two devices at the time when a client A device 10 has requested a command to the server device B 20, or when the server device B 20 executes and responds to the requested command. In some cases, a request for a command or a response of a requested command may be interrupted due to a bad channel condition, a bad device, or other reasons.

At this time, as can be seen in Figure 2, the processor of the equipment A (10) requesting a certain command stores the requested command in its memory means and checks the flag of the memory area at a set time interval (S10) The transmission of the command fails to search whether a flag for retransmission exists (S20).

If the flag for retransmission is not detected in the above, it is returned and continuously checks whether there is a flag for command transmission failure at a set time interval, and if the flag for retransmission is detected, it corresponds to the equipment B 20 as a server. Resend the command requesting the desired function or instructing the operator of the equipment A 10 that the interlocking operation for the command transmission has failed, and the operator of the maintenance A 10 resends any command that has failed manually. To command.

As described above, when the operator of a client device requesting a command to the server side manually performs a retransmission for a command that fails in the transmission of the command in the interworking between the devices located in the communication network and constituting the network. In very few cases, this is a feasible method and a very inefficient problem arises from the fact that the operator must wait at all times during the operation of the equipment.

In addition, since the operation of the communication equipment is closely related to the communication service user, the operation method of each device constituting the communication network is set differently according to the most frequently used time and the least time used by the user.

That is, at the busy time, the user should perform only a function for providing a communication service, for example, user registration, user service change, and user complaint handling, and at least, a command that cannot be performed at the busy time, for example, credit Perform bad user registration, suspended user registration, and resend failure command.

Therefore, if the interworking failure command between the devices constituting the communication network is made in the shortest time, the communication service provider is required if the failure of the command includes a very urgent command or the delay in executing the requested command causes some damage to the user. There is a problem that the financial damage caused by compensation for damages as well as the damage that the user's reliability is reduced.

The present invention has been made in view of the above-described general problems, and an object thereof is to determine a time of granting and retransmitting a class according to a characteristic of an interworking command between devices located in a communication network so that a command of the corresponding class is retransmitted at that time. By doing so, the equipment can be operated more efficiently and flexibly.

In addition, the present invention allows the transmission of a failed command to be executed according to the characteristics of the command even in a busy time, and sets the retransmission limit time of the command so that the retransmission of the failed command is executed within the time limit, thereby preventing the occurrence of user damage or complaints. Minimization and, therefore, improved the reliability of the telecommunications service provider.

In addition, the present invention delays the execution of the next command when the space for storing the failed transmission command reaches the limit line, and then switches to the retransmission mode to execute retransmission of the failed command stored in the designated space. If the current network condition is unstable in the mode entered, all retransmission commands are delayed until the point of stabilization to provide stability for the retransmission of commands.

1 is a block diagram showing an interlocking relationship between two devices located in a communication network.

2 is a flowchart illustrating retransmission of a failure command between two conventional devices located in a communication network.

3 is a flow chart for the processing of a failed interworking command in the present invention.

4 is a flowchart illustrating a retransmission timing determination of a failed interworking command in the present invention.

5 is a flowchart illustrating a process inside the equipment upon retransmission of a failed interworking command in the present invention.

<Explanation of symbols for the main parts of the drawings>

10: Equipment A 20: Equipment B

In order to achieve the above object, the present invention provides a method for transmitting a command between devices interworking with a communication network, the client device determining whether a command requested from a server device is normally transmitted, and detecting a failure of the command transmitted from the client device. If it is, the time and period for retransmission are set by analyzing the class and time limit of the failed command through the set table, and the command for setting the time and period for retransmission is set in the corresponding space of the designated memory area. Detecting the priority of the stored retransmission command and executing retransmission of the corresponding command at a corresponding time.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As can be seen in Figure 1, for example, if the equipment A (10) and the equipment B (20) is located in the communication network necessary equipment or data necessary for the equipment A 10 is implemented in the equipment B (20) If there is, the equipment A (10) connects the communication channel with the equipment B (20) to obtain the information or functions required by the equipment A (10) from the equipment B (20).

In the processor of the equipment A 10 as a client, a command attribute table is set in consideration of the class and the time limit for retransmission according to the importance of the transmission command.

The operation of the command transmission and the response transmission between the equipment A 10 and the equipment B 20 located in the communication network as described above are as follows.

When the equipment A 10, which is a client, requests the connection of a communication channel to the equipment B 20, which is a server, the equipment B 20 permits the connection of the communication channel according to the request of the equipment A 10, thereby providing the equipment A 10. And a communication channel between the equipment B (20).

As described above, in the state in which the communication channel between the equipment A 10 and the equipment B 20 is connected, the equipment A 10 is set in the equipment B 20 while performing various commands according to a function assigned to the equipment A 10. If it is determined that the use of the function or information and data is necessary, the equipment A 10 processes the function or information that needs to be used in an appropriate command and a predefined data format, and then corresponds to the equipment B 20 through the connected communication channel. After transmitting the command waits for a response from the equipment B (20) (S110).

As described above, when the equipment A 10 requests a certain command to the equipment B 20 side, or when the equipment B 20 performs a response according to the command requested from the equipment A 10, the two equipments. If the communication channel is unstable and the communication is disconnected, the device A 10 that has requested a command cannot receive a desired response from the device B 20 after a certain time has elapsed and indicates a failure for the transmission command.

In addition, when a problem occurs inside the equipment B 20 or a performance error of the instruction execution processor occurs while the equipment B 20 responds to the command according to the command requested from the equipment A 10. The equipment B 20 transmits a failure response to the command requested from the equipment A 10 side.

As described above, the transmission of any command requested by the equipment A 10 is not transmitted to the equipment B 20 or the equipment A 10 does not receive the requested response due to the problem of the equipment B 20. If a failure occurs (S120), the processor of the equipment A (10) displays a failure indication for the command requested to the equipment B (20), and then the level of the transfer command and the level of the transfer time limit through the table in which the failure command is set. Analyze (S130).

At this time, the importance of the transmission command in the table set in the processor of the equipment A (10) in order to analyze the failed transmission command is shown in Table 1 below.

Rating meaning Level 1 Immediate resend under any circumstances Level 2 Do not resend Level 2 Resend immediately when the time limit is reached : :

In addition, the level of the threshold time to be set is shown in Table 2 below.

Rating meaning Level 0 Never resend Level 1 Resend immediately under any circumstances Level 2 Resend in minutes or tens of minutes Level 3 Resend within a few hundred minutes or within a certain time : :

An example of the decision table considering Table 1 and Table 2 above is shown in Table 3 below.

Importance level Resend? Limit time (level) Command a One O One Busy hour 2 X 0 Command b 3 O 2 Command c 3 O 3 Command d 3 X 0 : : : :

When the transmission class and the time limit for retransmission are set for the commands that failed to be transmitted through the table set as described above, the processor sets a time and a period according to the analyzed result and stores them in the corresponding space of the memory area (S140). ).

Thereafter, the processor inside the equipment A 10 searches the memory area at intervals of a set time and period to check whether there is a flag for a command that failed to be transmitted, and then, if there is a flag to be detected, the processor is set according to the transmission importance and the time limit. According to the characteristics of the command immediately or after a predetermined time elapses to attempt to re-transmission to the equipment B (20) of the corresponding equipment (S150).

Among the commands that failed to be transmitted in the above, the equipment A 10 and the equipment B 20 request an important command necessary for interworking, that is, the equipment A 10 must perform in the process of performing the function to the equipment B 20. Since a command exists, the processor of the equipment A 10 determines whether the command that failed to be transmitted is a command that should be retransmitted immediately as shown in "command a" of Table 3.

If it is determined that the command that failed to be transmitted is a command that must be transmitted as shown in Table 3 of the set table, the processor of the equipment A 10 maintains a stable communication channel between the equipment B 20. Regardless of the load or busy time of the equipment B 20, the command that should always be executed first is retransmitted.

In the table 3 of the table in which the failed transfer command is set as above, re-execution should be requested as shown in the "command b", but the operation of the equipment A 10 is hindered even though the retransmission and response process passes after a few minutes to several tens of minutes. In the case of an instruction that does not result in an error, the processor stores the instruction that failed to transfer in the memory area.

At this time, the processor of the equipment A 10 transmits another kind of high priority command until the time limit set for the corresponding command that failed to be transmitted is reached, and the counter value reaches the limit time or another command to be executed. If it does not exist, execute the retransmission of the stored failed command.

In addition, although the command that failed to be transmitted is a command that needs to be redone as shown in Table 3 of the set table, even if the equipment A (10) performs the least time, which is the idle time without executing another command, the equipment A ( Since the transfer instruction does not interfere with the operation of 10), the processor of the equipment A 10 stores the failed transfer instruction in the memory area, and then executes another instruction, indicating that it is at the designated time or that the equipment A 10 is at the minimum time. At this point in time, retransmission of the "command c" which is a failure command stored in the memory area is executed.

In the case of the "command c" stored in the memory area, the command needs to be retransmitted but does not have a time limit. Therefore, the command "c" may be retransmitted only at a predetermined time required by the operator for retransmission.

In addition, the retransmission is not performed for a command that does not need to be retransmitted as shown in Table 3 of the table in which the command that failed to be transmitted is set as "command d".

The command that does not need to execute the retransmission is a command that the equipment A (10) is requested from another equipment C not shown, and the equipment C needs the function or information of the equipment B (20). When the equipment A 10 notifies the equipment C that the transmission of the command has failed, it is determined whether the retransmission of the command is determined by the equipment C or the equipment B (20) of the command started by the equipment A 10. If it is determined that the information is necessary and transmits it to the equipment B (20) but the equipment A (10) does not receive a response and the equipment B (20) is not reported to the equipment A (10) and the equipment B (20) Commands that do not fire.

In addition, there is a situation in which the equipment A 10 retransmits the failed command in addition to the above process, which will be described below with reference to FIG. 4.

For example, if the transfer command required from the equipment A 10 to the equipment B 20 side fails, the processor in the equipment A 10 determines from the set table whether the failed instruction is a class command that must be retransmitted. (S210).

At this time, if it is determined that the failed transmission command is a command that must be transmitted, the processor sets a time for retransmission of the failed command through analysis through the set table (S220), and then allocates a memory area to store the failed command. In operation S230, an instruction that receives a failure response or does not receive a response within a predetermined period of time in association with the B 20 is stored in a designated space (S230).

At this time, the processor in the equipment A (10) is a memory area at each time or at a predetermined time interval when the failed commands are stored so that the currently stored commands can be executed again when the specified limit line is reached before the space for the failed transmission command is stored. The storage space is checked to determine whether there is a storage space (S240).

If it is determined that there is a space in the memory area to store the failed command, the failed command is stored in the corresponding area (S270), and a previously failed command is stored so that an area for storing the currently failed command exists. If not determined, the processor of the equipment A 10 enters the retransmission mode (S250), and the failed transmission command stored in the memory area is transmitted even if the time limit is not reached or the minimum time is not reached. In operation S260, the memory space is secured.

In addition, in principle, the equipment A 10 and the equipment B 20 that are located in the communication network and interoperate with each other are unstable, even if the equipment A 10 has a retransmission time determined by various situations or conditions as described above. The retransmission of the failed command and the response thereof cannot be performed.

Accordingly, the equipment A 10 should always check the communication channel status between the equipment B 20 and store the state information.

For example, if the communication channel between the equipment A 10 and the equipment B 20 is not stable, all interworking commands executed in the equipment A 10 may not be executed again, regardless of their characteristics and types. Do not.

In addition, even if the failed command exceeds a certain time limit, the equipment A 10 has a status such as "command b" or "command c" which does not interfere with the operation of the equipment A 10. When the operator determines that the retransmission time should be delayed, the processor in the equipment A 10 temporarily stores the transmission command in the memory area and then transmits the command at the corresponding time.

Also, as can be seen in FIG. 5, when a predetermined retransmission time is reached during the operation of the equipment A 10, the "command a" has failed or there is no more space to store the retransmission command or the equipment A 10 If the time limit of the load is small, the processor of the equipment A 10 enters the retransmission mode and retransmits the failed transmission commands stored in the designated space of the memory area. The processor checks the state table to consider the state value stored in the table and the execution priority of the retransmission instructions, and checks the current communication channel state between the equipment A 10 and the equipment B 20 to perform the current retransmission. It is determined whether the state can be (S310).

In the case where the state of the communication channel between the two devices is unstable, the processor of the device A 10 delays all retransmission commands that fail to transmit until the state of the communication channel stabilizes, and then executes normal processing, and the communication channel state between the devices. If the stabilized state is determined whether the operator of the equipment has set a limit of the transmission time for the failure command for efficient operation of the equipment (S320).

If the operator of the equipment has set the transmission time limit for the commands for retransmission, the normal processing is executed without executing the retransmission of the failed command extracted according to the priority, and the transmission time by the operator. If the limit of the state is not set, it is determined whether the current state of the equipment is busy (S330).

If it is determined that the state of the equipment is the busiest time as described above, in case of “command a”, retransmission is executed immediately, but for other commands, the normal processing is executed after delaying the retransmission, and the state of the equipment is not in the busy time. If it is determined, it is determined whether other limited states are set (S340).

If the equipment is not busy or the other limit is set above, delay the retransmission of the extracted failed instruction according to the priority and then execute normal processing. If the other limit is not set, the priority is set according to the priority. After the extracted retransmission command is formed into a transmission format, the device B 20 retransmits the command and receives a response to the command from the device B 20 to receive the device A 10 and the device B ( 20 to perform interworking (S350).

As described above, the present invention avoids the operation method of retransmitting a failure command only at a minimum time in a batch in interworking between devices located in a communication network, so that the retransmission of a failed command can be executed even at the most frequent time according to the characteristics of the command. By providing reliability in the operation of the system and determining the retransmission time limit for the failed transmission command, and retransmitting it within the limit time as possible, it excludes the user's damage or complaints caused by the delay of the failed command transmission and communication accordingly. It improves the reliability of the service provider and provides stability and reliability to the operation of the equipment by efficiently managing the space in the memory area in which the command to be retransmitted is stored, thereby avoiding the loss of the command to be retransmitted.

Claims (12)

Claims [1] A method of transmitting a command between devices linked to a communication network, the method comprising: determining whether a command requested from a client device to a server device is normally transmitted; Setting a limit time and a period for retransmission by analyzing a class and a limit time of the failed command through a set table when a failure of the command transmitted is detected; Storing a command in which a time limit and a period for the retransmission are set in a corresponding space of a designated memory area; Detecting a priority of the stored retransmission command and executing retransmission of the corresponding command at a corresponding time point. The interworking communication device according to claim 1, wherein if a command failed in the process is a command required to perform a function of a client device, an immediate retransmission is executed if the communication channel between the devices maintains a stable state. How to determine when to retransmit. The retransmission time between interworking communication devices according to claim 1, wherein the time limit and the period of time for retransmitting a transmission command failed in the process are set in consideration of the effect of the required response on the client device. How to decide. According to claim 1, If the transmission command failed in the process is determined to be a command that can not be interlocked with other equipment according to the determination of the retransmission time between the interworking communication equipment characterized in that the retransmission is not executed. Way. 2. The method of claim 1, wherein retransmission of the command is not executed if a limit is set by the equipment operator for the transmission command that failed in the process. The method of claim 1, wherein when the memory means for storing the failed command for retransmission is insufficient, the device immediately enters the retransmission mode and executes the retransmission for the failed command stored in the corresponding area. How to determine when to retransmit between telecommunications equipment. According to claim 1, If the transmission of the command in the process due to channel instability between devices when the channel is restored, the command required to perform the function of the client device re-transmission immediately inter-linked communication equipment, characterized in that How to decide when to send. The method of claim 1, wherein the retransmission time is re-determined if the communication channel is not restored in the state where the retransmission time set for retransmission of the failed command has elapsed or the time limit has elapsed. How to determine when to retransmit between telecommunications equipment. The method of claim 1, wherein the retransmission time of the failed command depends on whether the retransmission is performed according to the class of the command, the retransmission time limit, and the operating conditions of the equipment in retransmission of the command and the storage space of the failed command. Retransmission time determination method between the interworking communication equipment, characterized in that determined. The method of claim 1, wherein when the operation processing of the device enters the minimum time, the transmission failure command stored in the memory area is extracted as a priority and retransmission is performed. Way. The interworking according to claim 1, wherein when the command request failure of the client device is caused by an instability of the communication channel, when the communication channel is restored, the retransmission command stored in the memory area is executed according to the determined priority. Determination method of retransmission between communication equipments. The interworking according to any one of claims 1 to 4, wherein retransmission is executed even when the equipment is busy for a command requiring immediate retransmission as a command necessary for performing a function of the client equipment among the failed commands. Determination method of retransmission between communication equipments.