JP3538067B2 - Multiprocessor configuration switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiprocessor exchange having a plurality of processors.
In particular, the present invention relates to a resource matching process when a resource management state mismatch occurs between processors.

[0002]

2. Description of the Related Art In an exchange having a multiprocessor configuration, inconsistencies in resource management states among processors often occur due to abnormal operation during system operation. However, even when a resource management state mismatch occurs between processors in a multiprocessor exchange, it is necessary to provide a service without affecting the operation state.

[0003]

In the conventional resource matching processing by mask processing as a resource matching processing method, since the state must be fixed during resource matching, call processing is stopped. A service outage has occurred.

Further, in the resource matching processing method by copying the resource usage management data to the resource matching recording area, a storage area that is not required during normal operation is provided, so that the memory usage is increased. I was

[0005] An object of the present invention is to prevent a service providing capability from being reduced by resource matching processing.
It is an object of the present invention to provide a multiprocessor configuration switch which does not cause an increase in storage area usage.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a multiprocessor switch comprising a switch resource management unit for managing switch resources of the entire system and a plurality of call processing control units for controlling a call request from a subscriber. The call processing control unit includes a signal processing management unit that receives a signal from a subscriber, and a line resource management unit that manages a state of a line resource, wherein the switch resource management unit subdivides the resource use state management internal data. , Storing, and performing capture guard on resource units subdivided in response to the occurrence of a failure in the signal processing management unit or the line resource management unit, and the resource usage status stored in the signal processing management unit and the line resource management unit. Inquiry, resource usage status stored in switch resource management unit, signal processing management unit and line resource Confirms the consistency by which collates the returned resource usage from the management unit,
By automatically releasing resources when an inconsistency occurs, it is possible to prevent the occurrence of invalid pending resources,
It is possible to prevent a decrease in service providing ability as an exchange.

[0007] The present invention is characterized in that, by subdividing resources for performing capture guard, the service providing ability of the exchange is not hindered by resource use restriction, and the function is provided within the range of existing resources. I do.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a first embodiment of a multiprocessor configuration switch according to the present invention. The multiprocessor exchange according to the present invention is configured by connecting a plurality of call processing controllers 2 for controlling a call request from a subscriber to a switch resource manager 1 of the entire system. The switch resource management unit 1 controls a plurality of call processing control units 2.

The call processing control unit 2 includes a signal processing management unit 3 (only 3-1 and 3-2 are shown in the figure) for receiving a signal from a subscriber, and a line resource management unit 4 for managing a state of a line resource. And

The signal processing management unit 3 issues a line resource hunt request to the line resource management unit 4 in response to a call request from the subscriber, and the line resource management unit 4 performs line hunting according to the request from the signal processing management unit 3. Capture resources. If the line resource is successfully captured, the signal processing management unit 3 issues a switch resource capture request. If the switch resource is successfully captured, the resource use status management internal data 11 is updated.

When a failure occurs in the signal processing management unit 3, resources are released in order to prevent inconsistency in call setting during signal processing. The signal processing management unit 3 makes a resource collation request to the line resource management unit 4, and upon receiving the resource collation request, the line resource management unit 4 releases the line resource.

When the switch resource management unit 1 receives the resource collation request via the line resource management unit 4, it performs capture guard on the matching unit A of the resource use state management internal data 11 shown in FIG. The processing management unit 3 makes an inquiry about the resource usage status, and the signal processing management unit 3 creates a usage status list of the matching unit A based on the internal data shown in FIG. Note that capture guard refers to limiting the use of resources and fixing resource state changes.

In the switch resource management section 1, the list returned from the signal processing management section 3 and the resource use state management internal data 1 stored in the switch resource management section 1 are stored.
1 is checked for consistency, and resources are released when inconsistency occurs. As shown in FIG. 2, by repeating this series of operations sequentially from step A to step Z, all resources are matched.

Next, the operation of this embodiment will be described in detail with reference to FIGS. FIG. 3 shows resource acquisition in the normal processing from the call connection to the end of the processing.

When the signal processing management unit 3 receives a call request from a subscriber, the signal processing management unit 3 sends a line resource capture request (step 31) to the line resource management unit 4, and then the switch resource management unit 1 A switch communication capture request (step 32) is made to implement call communication.

Next, referring to FIG. 4, a description will be given of a resource matching process when a failure occurs.

When a failure occurs in the signal processing management unit 3,
A resource collation request to the line resource management unit 4 (step 4
Perform 1). The line resource management unit 4 releases the line resources and sends a resource collation request (step 42) to the switch resource management unit 1. Upon receiving the resource collation request, the switch resource management unit 1
The capture guard (step 43) is performed on the resource usage management internal data A. After executing the capture guard timer (step 44) for a certain period of time, a query is made to each signal processing management unit 5 about the resource use status corresponding to the resource use status internal data A (step 45).

The signal processing management section 3 refers to the internal data, creates a list of the use status of the resource A for which an inquiry has been made (step 46), and returns the list to the switch resource management section 1. The switch resource management unit 1 compares the list returned from the signal processing management unit 3 with the resource usage management internal data A in the acquisition guard (step 47), and performs release processing for resources having inconsistencies in consistency. carry out. After all the comparisons of the resource usage management internal data A and the resource A usage list are completed, the capture guard of the resource usage management internal data A is released, and the capture guard of the resource usage management data B is performed. As in the case of the management internal data A, the inquiry, the consistency check, and the release when the inconsistency occurs,
By successively repeating the processing up to the resource use state management internal data Z, it is possible to continuously perform the resource matching process and prevent the service providing capability of the exchange from lowering.

Next, a second embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 5, the second embodiment of the present invention is different from the resource matching according to the failure occurrence shown in FIG.
The difference is that the resource processing status is inquired to the signal processing management unit 3.

The switch resource management unit 1 autonomously carries out a capture guard (step 51) on the resource use state management internal data a at regular intervals. After executing the capture guard timer (step 52) for a fixed time, the switch resource management unit 1 autonomously inquires about the resource use status (step 53) about the resource use status corresponding to the resource use status internal data a (step 53). This is performed for the process management unit 3. The signal processing management unit 3 refers to the internal data, creates a use status list of the inquired resource a (step 54), and returns it to the switch resource management unit 1. The switch resource management unit 1 collates the list returned from the signal processing management unit 3 with the resource usage management internal data a in the acquisition guard (step 5).
5) Then, release processing is performed for resources having inconsistencies in consistency. As in the first embodiment, the resource matching process is automatically performed according to a cycle by sequentially repeating the process up to the resource usage management internal data z.

In the second embodiment, unused resources are automatically released to prevent a decrease in the service providing capability of the exchange.

[0024]

As described above, according to the present invention, the resource use management data is subdivided to realize the resource use restriction by the resource capture guard without affecting the normal operation. Resource matching can be realized without lowering the service providing capability of the system.

Further, it is not necessary to secure a storage area unnecessary for normal operation, which is generated in data comparison resource matching processing by copying internal data, which is a conventional method of matching resources, and is normally used. By performing the resource matching process by effectively utilizing the resource usage state management internal data, it is possible to prevent an increase in the usage of the storage area.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a first embodiment of a multiprocessor configuration exchange according to the present invention;
It is a block diagram showing an embodiment.

FIG. 2 is a diagram for explaining capture guard in a unit of matching of resource use management internal data.

FIG. 3 is a diagram illustrating resource capture in normal processing from call connection to processing end.

FIG. 4 is a diagram illustrating resource matching processing when a failure occurs.

FIG. 5 is a block diagram showing a second embodiment of the present invention.

[Explanation of symbols]

1 Switch resource management unit 2 Call processing control unit 3,3-1-3-N signal processing management unit 4 Line resource management unit 11 Resource Usage Management Internal Data

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04Q 3/545

Claims (2)

(57) [Claims] 1. A switch resource management unit for managing switch resources of the entire system, and a plurality of call processing control units for controlling a call request from a subscriber. The call processing control unit stores data in a fragmented manner within a range that does not cause a service degradation. The call processing control unit includes a signal processing management unit that receives a signal from a subscriber and a line resource management unit that manages a state of a line resource. The processor configuration switch, wherein the signal processing management unit, when a failure occurs in the signal processing management unit, makes a resource collation request to the line resource management unit, and the line resource management unit receives the resource collation request The line resource is released, and the switch resource management unit performs a resource collation request via the line resource management unit. Received, performs capture guard sequentially on each data of the fragmented resource usage management internal data, and inquires each signal processing management unit about the usage status of the resource corresponding to the captured guarded data. A multiprocessor configuration switch for checking the consistency with the resource usage status returned from the signal processing management unit, and performing release processing for resources having inconsistencies in the consistency. 2. A switch resource management unit for managing switch resources of the entire system, and a plurality of call processing control units for controlling a call request from a subscriber. The call processing control unit stores data by dividing the data into pieces within a range that does not cause a service degradation. A resource matching method for a processor configuration switch, wherein the signal processing management unit issues a resource collation request to the line resource management unit when a failure occurs in the signal processing management unit; Upon receiving the collation request, the line resource is released, and the switch resource management unit passes through the line resource management unit. Receiving the resource collation request, and sequentially performs capture guard on each of the fragmented resource use management internal data, and sends an inquiry about the use status of the resource corresponding to each of the capture guarded data to each signal. Performed to a processing management unit, wherein the signal processing management unit creates a list of the usage status of the inquired resource, and returns the list to the switch resource management unit. The switch resource management unit A method for confirming consistency with the resource use status returned from, and performing release processing for resources having inconsistent consistency.