KR100388607B1 - method for SCCP global title translation in No.7 signaling - Google Patents

Abstract

The present invention relates to a method for translating SCCP global titles in No.7 signaling networks to increase the utilization of the system and to effectively cope with system overload in performing SCCP global title translation functions in No.7 signaling networks.

The present invention provides a SCCP global title translation method in No.7 signal network, comprising: receiving a global title translation request, extracting global title translation information from the request, and determining whether the global title is a predefined global title; If the general name is a predefined general name, determining whether the general name can be translated according to the availability of the primary signal points and the secondary signal points; Determining whether it is possible to translate the global title at both the primary signal point and the secondary signal point if the global title translation is possible; Determining whether the system utilization is greater than or equal to a system overload threshold by calculating system utilization when both the primary signal point and the secondary signal point can translate the global title; As a result of the determination, when the system utilization is higher than the system overload threshold, the first and second signal points are alternately performed according to the load sharing method, and the overall title translation is requested by performing the global title translation function. A notification is made.

Description

No.7 Method for SCCP global title translation in No.7 signaling

The present invention relates to a method of translating a signaling connection control part (SCCP) generic name in No.7 signaling network, and more particularly, in performing the SCCP generic name translation function in a No.7 signaling network, increasing the utilization of the system and The present invention relates to a method for translating SCCP generic names in No.7 signaling network that can effectively cope with overload.

No.7 The generic name, which is one of the SCCP address elements used for the purpose of allowing indirect routing based on the destination address in a signaling network, is the same address as a dialed telephone number and is not directly used for routing in the signaling network. However, the translation function of SCCP provides information for SCCP routing. SCCP requires translation capability to translate these generic names into destination point code (DPC) and sub-system number (SSN). Here, the destination code and the subsystem number are not required for the translation function of the SCCP, and are directly used for the routing function of the SCCP and the MTP (message transfer part).

The aforementioned translation function may also be performed at another signaling point in the network, such as originating point of the message or signal transfer part (STP).

The conventional SCCP global title translation method in No.7 signal network as shown in FIG. 1 is defined to perform the SCCP global title translation function at the signal point B and deliver the corresponding SCCP signal message to the signal point C or D. Suppose that you want to route a signaling message at signal point B, and if it is routing according to the global title, then try to translate the global title to signal point B, which is the primary signaling point first, according to the dominant role of the main system. If translation at the signal point B is not possible, a translation is attempted to the signal point C as the secondary signal point. Here, in the global title translation according to the main system priority sharing scheme, the primary signal point always has priority.

As described above, when routing a SCCP signal message requiring global title translation at signal point B of No. 7 signaling network, the SCCP signal message including routing according to the global title at adjacent signal point A is converted to signal point B. It is divided into the case of transmission and the case where the SCCP user part of signaling point B requests the transmission of SCCP signaling message that requires routing according to the general name. As shown in Table 1, the translation of the global title is always performed by the first title even when both primary and secondary are available for the global title.

Primary state Secondary state Translation result Available Available First successful translation Available Unavailable First successful translation Unavailable Available Second successful translation Unavailable Unavailable Global title translation failed

As described above, in the conventional No.7 signaling network, when the SCCP general name translation method is available for translation at the primary signal point, the translation is performed only at the primary signal point regardless of whether the secondary signal point can be translated. In order to achieve translation at the secondary signal point, the translation at the primary signal point must be impossible. After the translation at the secondary signal point is performed for a certain time, if the state of the primary signal point which is in the faulty state is converted into a state capable of translation again, the translation at the secondary signal point is stopped and the translation at the primary signal point is stopped. Is resumed.

In other words, when the SCCP global title translation function is duplicated by the main system priority sharing method, although the primary and secondary signal points are mostly translatable in the signaling network, the global title translation is performed only at the primary signal point. Excessive cost investment is required for the SCCP global title translation function in the signaling network. Even if the SCCP global title translation is excessive from the signal point B to the primary signal point, the SCCP global title translation is not performed at the secondary signal point.

Therefore, the utilization of the system is lower than the investment cost due to redundancy for the overall title translation, and even if the system is overloaded at the first signal point, the actual SCCP overall title translation is not performed at the second signal point. There is a problem that load sharing is impossible due to the global title translation function.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and when the SCCP global title translation function is performed in No. 7 signaling network, the system supports both a dominant role and a load sharing scheme. By automatically switching from the primary system priority sharing method to the load sharing method according to the system load of the primary signal point, it is possible to effectively cope with the occurrence of system overload of the primary signal point and to improve the utilization and reliability of the system. The purpose is to provide a SCCP generic title translation method in No.7 signaling network.

1 is a diagram illustrating a general No. 7 signal network.

2 is a view for explaining the SCCP global title translation method in No.7 signaling network according to the present invention.

According to the present invention for achieving the above object, in the SCCP global title translation method in No.7 signal network, receiving the global title translation request, extracting the global title translation information from the request and whether the general name is a predefined global name Judging the process; If the general name is a predefined general name, determining whether the general name can be translated according to the availability of the primary signal points and the secondary signal points; Determining whether it is possible to translate the global title at both the primary signal point and the secondary signal point if the corresponding global title translation is possible; Determining whether the system utilization is greater than or equal to a system overload threshold by calculating system utilization when both the primary signal point and the secondary signal point can translate the global title; As a result of the determination, when the system utilization is higher than the system overload threshold, the first and second signal points are alternately performed according to the load sharing method, and the overall title translation is requested by performing the global title translation function. A notification is made.

If the general name is not a pre-defined general name, or if the general title translation is not possible, the general name translation is notified to the place where the general title translation is requested, and waiting to receive another general title translation request. Characterized in that the process further comprises.

If the global title translation is not possible at both the primary signal point and the secondary signal point, and the global title translation is possible only at the primary signal point, the global title translation is performed at the primary signal point to perform the global title translation per unit time. If the translation volume is updated, and the global title translation is available only at the secondary signal point, the global title translation is performed at the secondary signal point, and the general title translation is notified to the place where the global title translation is requested, and the other general title translation request is performed. Characterized in that further comprising the process of waiting to receive.

In addition, the system utilization is a number indicating the current utilization of the corresponding system according to the global title translation, characterized in that the value indicating the ratio of the maximum SCCP throughput per unit time to the global title translation amount per unit time as a percentage.

If the system utilization is less than the system overload threshold, the general name is translated at the first signal point according to the primary system priority sharing scheme to update the overall title translation amount per unit time, and the overall title translation is requested. Wherein further comprises the step of waiting to notify the global title translation success and receive another global title translation request.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to SCCP generic name translation method in the No.7 signal network according to a preferred embodiment of the present invention.

Since the configuration of No. 7 signal network to which the SCCP global title translation method according to the present invention is applied is similar to the conventional method, the following description will be made using the same configuration as the conventional No. 7 signal network shown in FIG. .

2 is a view for explaining the SCCP global title translation method in the No.7 signal network according to the present invention.

Suppose you want to route an SCCP signaling message at signaling point B to signal point C or D by performing the SCCP global title translation function at signaling point B. The name translation request is received (S10). In the above-described process S10, the global title translation request is an adjacent signal point such as signal point A or an SCCP user unit of signal point B (operation and maintenance application unit and mobile application application as an upper layer functional unit which receives a service by directly interfacing with SCCP). Department, integrated information network user unit, SCCP management unit). The signal point B having received the global title translation request in step S10 extracts information (global title, translation type, ...) of the global title to be translated from the request (S12), and the global name extracted in step S12 signals. It is determined whether the overall name is defined in point B (S14). As a result of the determination in step S14, if the general name extracted in step S12 is a general name not defined in signal point B, the general name translation failure is notified to the place where the overall title translation is requested (S16), and another general management Wait to receive people translation requests.

On the other hand, if the overall name extracted in step S12 is the overall name defined in the signal point B, it is determined whether the corresponding global title translation is possible (S18). In the above-described process S18, it is possible to determine whether the global title translation is available as the available state of the primary signal point and the secondary signal point for translating the global title, and if any one of the primary signal point and the secondary signal point is available, If the global title translation is possible and both the primary and secondary signaling points are unavailable, the global title translation is impossible.

If it is determined in the above-described process S18 that the corresponding global title translation is not possible (when both the primary signal point and the secondary signal point are not available), the process proceeds to the above-described process S16 to the place where the overall title translation is requested. Notify people of translation failures and wait to receive another global title translation request.

On the other hand, if it is determined in the above-described process S18 that the global title translation is possible (when either of the primary signal point and the secondary signal point are available), it is determined whether the global title translation is possible at the primary signal point ( S20). If the overall name translation is not possible at the first signal point as a result of the determination of step S20, since the second signal point is available, the general name is translated at the second signal point (S22), and the overall title translation is requested. Notifies the success of the global title translation (S24), and waits to receive another global title translation request.

On the other hand, if the global name translation is possible at the first signal point as a result of the determination of step S20, it is determined whether the global name translation is possible at the second signal point (S26). If the overall name translation is not possible at the second signal point as a result of the determination in step S26, the global title is translated at the first signal point (S28), and the unit is translated from the SCCP general name translation signal point to the primary signal point. Update the overall title translation volume (GT_translation_per_unit) per unit hour, which is the translation number per hour (S30), proceed to the above process S24 to notify the successful translation of the global title to the place where the global title translation is requested, and request another global title translation request. Wait to receive

On the other hand, if the overall name translation is possible at the second signal point as a result of the determination in step S26, the system utilization (system_utilization_ratio) is calculated (S32), and it is determined whether the system utilization is above the system overload threshold (system_overload_threshold) (S34). ).

In the above process S34, the system utilization is a number indicating the current utilization of the system according to the SCCP general name translation, which may have a value of 0 to 100, and is automatically compared to the system overload threshold to load sharing method (load_sharing). The transition is determined. This system utilization is calculated by equation (1).

In Equation 1, the maximum SCCP throughput per unit time (max_SCCP_processing_per_unit) is the maximum number of SCCP signal messages processed by the corresponding signal point due to the SCCP global title translation, and the total title translation volume per unit hour (GT_translation_per_unit) is the SCCP global title translation signal. The number of translations per unit time translated from the point to the primary signal point.

In the process S34, the system overload threshold (system_overload_threshold) is a threshold value of the system utilization that is automatically switched from the main system priority sharing method to the load sharing method when the SCCP global title translation function is performed, and may have a value of 0 to 100. If it is 0, it always operates in the load sharing scheme, and if the threshold is 100, it operates only in the main system priority sharing scheme.

As a result of the determination in step S34, if the system utilization is not above the system overload threshold, the global title is translated at the first signal point according to the primary system priority sharing (S28), and the global title translation amount (GT_translation_per_unit) is updated per unit time. In step S30, the process proceeds to step S24 to notify the general name translation success to the place where the global title translation is requested, and waits for receiving another global title translation request.

On the other hand, if the system utilization is greater than the system overload threshold as a result of the determination of step S34, the SCCP overall name translation function alternates between the primary signal point and the secondary signal point according to the load sharing method since the system overload occurs at the primary signal point. Perform (S36). That is, in the above process S34, if the SCCP global title translation function is first performed at the primary signal point, then the SCCP global title translation function is performed at the secondary signal point, and if the SCCP global title translation function is performed at the secondary signal point, the next time, Perform SCCP global title translation at the primary signaling point.

Thereafter, in step S36, it is determined whether the SCCP overall name is translated at the primary signal point (S38). In the case where the SCCP global title is translated at the first signal point as a result of the determination in step S38, the global title translation amount (GT_translation_per_unit) is updated per unit time (S30), and the process proceeds to the above-described step S24 where the global title translation is requested. To notify the global title translation success and wait to receive another global title translation request.

On the other hand, if the result of the determination of step S38 described above does not translate the SCCP overall name at the primary signal point, that is, if it is translated at the secondary signal point, the process proceeds to step S34 described above. Notify translation success and wait to receive another global title translation request.

The SCCP global title translation method in the No.7 signal network of the present invention is not limited to the above-described embodiments, and may be modified in various ways within the scope of the technical idea of the present invention.

According to the SCCP global title translation method in the No.7 signaling network of the present invention as described above, in performing the SCCP global title translation function in the No.7 signaling network, the main system priority sharing scheme and the load sharing scheme are supported together. Therefore, the system automatically switches from the primary system priority sharing method to the load sharing method according to the system load of the primary signal point, thereby effectively coping with the system overload of the primary signal point. As a result, there is an effect of improving the availability and reliability of the system in the No.7 signal network.

Claims (5)

In the SCCP global title translation method in No.7 signaling network, Receiving a global title translation request, extracting global title translation information from the request, and determining whether the global title is a predefined global title; If the general name is a predefined general name, determining whether the general name can be translated according to the availability of the primary signal points and the secondary signal points; Determining whether it is possible to translate the global title at both the primary signal point and the secondary signal point if the global title translation is possible; Determining whether the system utilization is greater than or equal to a system overload threshold by calculating system utilization when both the primary signal point and the secondary signal point can translate the global title; As a result of the determination, when the system utilization is higher than the system overload threshold, the first and second signal points are alternately performed according to the load sharing method, and the overall title translation is requested by performing the global title translation function. SCCP global title translation method in the No.7 signaling network characterized in that it comprises a step of notifying. The method of claim 1, wherein if the general name is not a predefined general name or if the general title translation is impossible, the general name translation failure is notified to the place where the general name translation is requested, and another general name translation request is requested. SCCP global title translation method in the No.7 signaling network, characterized in that further comprising the step of waiting to receive. The method of claim 1, wherein if the global title translation is not possible at both the primary signal point and the secondary signal point, and the global title translation is possible only at the primary signal point, the global name translation is performed at the primary signal point. If the overall title translation volume is updated per unit time, and the global title translation is possible only at the second signal point, the global title translation is performed at the second signal point, and the successful completion of the overall title translation is notified to the place where the overall title translation is requested. The SCCP global title translation method in No.7 signaling network, further comprising the step of waiting to receive the global title translation request. According to claim 1, The system utilization is a number indicating the current utilization of the system according to the global title translation, characterized in that the value representing the ratio of the maximum SCCP throughput per unit time to the global title translation amount per unit time as a percentage SCCP global title translation method in No.7 signaling network. The method according to claim 1, wherein when the system utilization is less than or equal to the system overload threshold, the overall title translation is updated per unit time by translating the global title at the primary signal point according to the primary system priority sharing scheme. The SCCP global title translation method in the No.7 signaling network, further comprising the step of notifying the global title translation success to the place where the translation is requested and waiting to receive another general title translation request.