KR100364007B1 - Rink error automatic detection method between base transceiver subsystem and base station controller of the digital mobile communication system - Google Patents

Abstract

The present invention monitors the status of the link between the base station and the control station, and if a link error occurs, the system automatically performs a quality diagnosis to exclude the corresponding link from the call service resource when it is determined to be defective, and then to the link determined to be defective. The present invention relates to a method for automatically detecting a link error between a base station and a control station in a digital mobile communication system, which periodically monitors an occurrence and includes it as a call service resource when it is determined to be a normal link. Monitoring the link periodically to determine whether an error has occurred in the link, and diagnosing the quality of the link when an error occurs in the link because the number of data in which the error occurs as a result of the link monitoring in the first step is greater than or equal to a threshold. The second step and the link quality diagnosis result of the second step If the threshold is less than or equal to the threshold, the link is excluded from the call service resource. If the link quality is greater than or equal to the threshold, the third step of reassigning the link to the call service resource and the bad link excluded from the call service resource of the third stage are also applied. It is characterized in that it comprises a fourth step of periodically monitoring the transmitted and received data whether the link has an error, and proceeds to the second step according to the monitoring result.

Description

Rink error automatic detection method between base transceiver subsystem and base station controller of the digital mobile communication system}

The present invention relates to a digital mobile communication system, and in particular, while monitoring the status of a link between a base station and a control station, if a link error occurs, quality diagnosis is automatically performed to exclude the link from the call service resource when it is determined to be defective. Thereafter, the present invention relates to a method for automatically detecting a link error between a base station and a control station of a digital mobile communication system which periodically monitors an error occurrence for a link determined to be bad and includes the call service resource again when it is determined to be a normal link.

Conventionally, in the digital mobile communication system, if only the transmission and reception of the link between the base station and the control station is possible, the call service is continued through this link even when an error occurs in the transmission / reception data due to the failure of detecting an error occurrence. When excluded from the resource, it did not detect this even if the link had already returned to normal.

Therefore, conventionally, even if an error occurs in a link, call quality is reduced by continuing the call service through the link, and there is a problem in that system performance is reduced due to a malfunction of a control message.

In addition, for links that are already excluded from call service resources, there is a problem that the resources are not effectively utilized since the links remain excluded from call service resources even after the link is in a normal state.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to periodically monitor the occurrence of a link error between a base station and a control station during system operation in a digital mobile communication system, and automatically perform a quality diagnosis of the link if an error occurs. Therefore, if the quality of the link is lower than the threshold, the link is excluded from the call service resource. After that, the failure is continuously monitored even for the bad link excluded from the call service resource, and the call service is returned when the link returns to normal. It provides automatic link error detection method between base station and control station in digital mobile communication system that prevents system performance due to link error by reallocating resources and saves manpower and cost through efficient resource management of link. There is a purpose.

1 is a block diagram according to the present invention, FIG. 2 is an overall operation flowchart according to the present invention, FIG. 3 is a detailed operation flowchart of an error monitoring portion for a link between a base station and a control station in an HICA in a base station or a control station of the present invention, and FIG. Is a detailed operational flowchart of a part for diagnosing and analyzing a link quality of the present invention, and FIG. 5 is a detailed operational flowchart of a part for periodically monitoring a link error for a bad link excluded from a call service resource of the present invention.

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

1,6: HICA 2: LCIN

3,4: HNE (T) A 5: BIN

10: control station 20: base station

In the digital mobile communication system of the present invention to achieve the above object, a link error automatic detection method between a base station and a control station periodically monitors data transmitted and received through a link between a base station and a control station to monitor whether a link has occurred. A first step and a second step of diagnosing the quality of the link when an error occurs in the link because the number of data in which the error occurs as a result of the link monitoring in the first step is greater than or equal to a threshold; and the link quality diagnosis in the second step. As a result, if the link quality is lower than the threshold, the link is excluded from the call service resource. If the link quality is higher than the threshold, the third step of reallocating the link as the call service resource; and the defect excluded from the call service resource of the third stage. Periodically monitors data sent and received on the link and continues to determine if the link has failed. And a fourth step of proceeding to the second step according to the monitoring result.

Hereinafter, a method for automatically detecting a link error between a base station and a control station of a digital mobile communication system according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram for error monitoring and quality diagnosis of a link between a base station and a control station of the present invention, which includes a high-capacity IPC control board assembly (HICA) 1 for controlling a communication path between a base station and a control station; Load CDMA Interconnect Network (LCIN) 2, which is responsible for the connection between the vocoder and the base station, and HNE (T) A (HIPC Node E1 (T1) Assembly) 3, which controls the E1 / T1 link between the base station and the control station. The control station 10, the HNE (T) A (4) controlling the E1 / T1 link between the base station and the control station, the BTS Interconnection Network (BIN) 5 responsible for the connection between the channel card and the base station, the base station and the control station The base station 20 includes an HICA 6 that controls an inter-processor communication path of the mobile station. The HICA 1, 6 performs CRC error, bipolar error, and synchronization error by analyzing data transmitted and received through a link. It periodically checks for bit errors.

A method of automatically detecting a link error between a base station and a control station of the digital mobile communication system of the present invention having the above configuration will be described below with reference to FIGS. 2 to 5. FIG. 2 is an overall operation flowchart according to the present invention. First, it periodically monitors the data transmitted and received through the link between the base station and the control station to monitor whether an error has occurred in the link (S10). Then, the number of times the error occurs as a result of the link monitoring in step S10 is greater than or equal to the threshold. If an error occurs, the quality of the link is diagnosed (S20). If the link quality diagnosis result of the link quality of the step (S20) is less than the threshold (S30), the link is excluded from the call service resource (S31). If the link quality is greater than or equal to the threshold (S30), the link is reassigned to the call service resource (S32). Subsequently, the link service resource of the step S31 is removed. In the case of a bad link, data transmitted and received is periodically monitored to continuously monitor whether an error has occurred in the link (S40), and the process proceeds to step S20 according to the monitoring result. 6 is a detailed operation flowchart of a part for monitoring an error on a link between a base station and a control station.

That is, first, data reception counts and error counts, which are variables required for monitoring the error of the link between the base station and the control station, are initialized, and thresholds for the error monitoring cycle and the error count are set (S11).

Subsequently, in order to monitor whether an error has occurred for the control station link between base stations, call service data or control data is received at the HICA 1, 6 of the control station 10 and the base station 20 (S12), and the HICA 1 If an error occurs at (6), the number of times of data reception is increased (S13).

Subsequently, it is determined whether any error has occurred in the data received by the HICA (1, 6) of the control station 10 and the base station 20 (S14). It is determined whether the number of errors is greater than the threshold (S16), and if the number of errors is greater than the threshold, the process proceeds to step S20 to perform a link quality diagnosis. On the other hand, no errors have occurred in step S14. If the number of errors is not greater than the threshold in step S16, it is determined whether the number of times of data reception is smaller than the error monitoring period (S17). If the number of errors is large, the number of times of error and the number of errors are initialized (S18). 4 is a detailed operation flow diagram of the part of analyzing the link quality of the present invention. A step of analyzing the quality.

First, in order to analyze the quality of the link, the link is temporarily excluded from the call service resource, the diagnosis time and the threshold are set, and the number of error occurrences is initialized (S21).

Subsequently, test data is generated by the control station 10 side HICA 1 and transmitted to the base station 20 side HNE (T) A 4 (S22).

The base station 20 side HNE (T) A (4) receives the test data and retransmits it to the control station 10 side HNE (T) A (3) (S23).

Then, the control station 10 side HICA 10 determines whether the transmitted test data and the received test data returned from the base station side 20 HNE (T) A (4) are the same (S24). If it is the same, it is determined whether the predetermined diagnosis time has elapsed (S26).

If the diagnostic time has elapsed in the step (S26), it is determined whether the error count generated during the diagnostic time is greater than the threshold (S30) and if it is large, the link quality is bad and the corresponding link is completely excluded from the call service resource (S31). Thereafter, an error occurrence is periodically monitored for the excluded bad link (S40).

On the other hand, if the error count is less than the threshold in step S30, since the quality of the link is normal, the link is reassigned to the call service resource (S32), and the process proceeds to step S10 to determine the link between the base station and the control station. Finally, Figure 5 is a detailed operational flow diagram of a portion that periodically monitors link errors for bad links excluded from call service resources of the present invention. That is, errors occur for links determined to be bad. In order to periodically monitor whether the number of data reception and the number of errors is initialized first (S41), the HICA (1, 6) of the base station 10 and the control station 20 receives control data (S42), respectively, and the number of data reception (S43). Then, it is determined whether any error has occurred in the data received from the HICA (1, 6) of the control station 10 and the base station 20 (S44). Increase Then (S45) determining if the number of errors is greater than a threshold value, and (S46), wherein the number of errors greater than a threshold the process proceeds to the step (S20) performs the link quality diagnosis.

On the other hand, if no error occurs in step S44 or if the number of errors is not greater than a threshold in step S46, it is determined whether the number of data receptions is smaller than the error monitoring period (S47). After initializing the number of errors (S48), the process proceeds to the above step S42, and if small, the process proceeds directly to the step S42.

As described above, the present invention, by analyzing the quality of the link periodically to automatically exclude the bad link from the call service resources to prevent call quality degradation and system malfunction, and also excluded from the call service resources Even if a bad link is analyzed periodically, the quality of the bad link is reassigned to the call service resource when it returns to normal, thereby managing the link resource more efficiently.

Claims (4)

(correction) A first step of periodically monitoring data transmitted / received through the link between the base station and the control station to monitor whether the link has an error; A second step of diagnosing the quality of the link when an error occurs in the link because the number of data in which the error occurs as a result of the link monitoring in the first step is greater than or equal to a threshold; A third step of excluding the link from the call service resource if the link quality diagnosis result is the link quality below the threshold, and reassigning the link to the call service resource if the link quality is above the threshold; It also comprises a fourth step of periodically monitoring the data transmitted and received for the bad link excluded from the call service resource of the third step to continuously monitor whether the link has an error, and proceeding to the second step according to the monitoring result. A method for automatically detecting a link error between a base station and a control station in a digital mobile communication system. (Correction) The method according to claim 1, wherein the first step is A first step of initializing the data reception count and the error count and setting a threshold for the error monitoring period and the error count; After performing the first process, the call service data or control data is received at the HICA (1, 6) of the control station 10 and the base station 20, and the number of times of data reception when an error occurs in the HICA (1, 6) Increasing second process, After performing the second process, it is determined whether any error has occurred in the data received by the HICA (1, 6) of the control station 10 and the base station 20, if the error occurs, the error number is increased after increasing the number of errors Determines whether is greater than the threshold, and if the error count is greater than the threshold, the third process of proceeding to the second step; If the error does not occur in the third process or the number of errors is not greater than the threshold, it is determined whether the number of data reception is smaller than the error monitoring period. And a fourth step of directly proceeding to the second step if small, and automatically detecting a link error between the base station and the control station of the digital mobile communication system. (Correction) The method of claim 1, wherein the third step is A step 1 of temporarily excluding a link from a call service resource, setting a diagnostic time and a threshold, and initializing an error occurrence count; After performing the first process, the second process of generating the test data from the control station 10 side HICA (1) to transmit to the base station 20 side HNE (T) A (4), After performing the second process, the third process of receiving the test data from the base station 20 side HNE (T) A (4) and retransmitted to the control station 10 side HNE (T) A (3), After performing the third process, it is determined whether the test data transmitted from the control station 10 side HICA 10 and the received test data returned from the base station side 20 HNE (T) A (4) are equal to each other. Increasing, if equal, a fourth process of determining whether a predetermined diagnosis time has elapsed, If the diagnosis time has elapsed in the fourth process, it is determined whether the error count generated during the diagnosis time is greater than the threshold value, and if the size is large, the corresponding link is excluded from the call service resource. A method for automatically detecting a link error between a base station and a control station of a digital mobile communication system, comprising: a process; (New) The method of claim 1, wherein the fourth step is A first process of initializing the number of data reception and the number of errors; After performing the first process, a second process in which the HICAs 1 and 6 of the base station 10 and the control station 20 receive control data and increase the number of times of receiving data, respectively; After performing the second process, it is determined whether any error has occurred in the data received by the HICA (1, 6) of the control station 10 and the base station 20, if the error occurs, the error number is increased after increasing the number of errors Determines whether is greater than the threshold, and if the error count is greater than the threshold, the third process of proceeding to the second step; If the error does not occur in the third process or the number of errors is not greater than the threshold, it is determined whether the number of data reception is smaller than the error monitoring period. And a fourth step of directly proceeding to the second step if small, and automatically detecting a link error between the base station and the control station of the digital mobile communication system.