KR20040049180A - Method for duplecate of call processing software - Google Patents

Abstract

PURPOSE: A method for the duplication of call processing software is provided to maintain and manage all the call processing-associated information of an active board at a standby board by matching active and standby call IDs, vocoder resource information that a CCP(Call Control Processor) allocates and manages, and active and standby call DBs respectively. CONSTITUTION: If 'msg_mob_orig_bc' containing the origination information of a terminal is received, an active CCP creates a task and transmits 'sig_create_org_as_cc', including a call ID, to a standby CCP. The active CCP creates a task using the call ID transmitted together with 'sig_create_org_as_cc' and executes call processing. If '_msg_ch_assign_compl_bc' is received from a BCP(BTS Control Processor), the active CCP allocates a vocoder resource and transmits allocated resource information to the standby CCP. The standby CCP allocates the transmitted vocoder resource and executes call processing.

Description

Method for duplecate of call processing software

The present invention relates to a duplication method in a CCP call processing software of a control station for duplication in a communication system requiring continuity of a CDMA network and other services, and particularly, an active and standby call ID, By matching the vocoder resource information managed by the CCP with the active and standby call database (DB) respectively, all call processing related information of the active board can be maintained on the standby board. The present invention relates to a method of redundancy of call processing software, which provides a continuity of service by immediately switching in case of failure of an active board.

In general, the conventional 2G code division multiple access (CDMA) system does not need to consider redundancy in the AP by supporting redundancy in the operating system (OS), but redundancy in the AP by using a commercial OS (VxWorks) that does not support redundancy. The need was raised.

Accordingly, the present invention is proposed to solve the above problems of the prior art,

An object of the present invention is to match an active and standby call ID, an vocoder resource information managed by the CCP, and an active and standby call database DB, thereby matching an active board. It provides a method of redundancy of call processing software that can maintain all call processing related information of) in stand-by board, and provide service continuity by immediately switching in case of failure of active board. .

Redundancy method of a communication system requiring continuity of services according to the present invention for achieving the above object,

After generating a child task from an active main task that receives an origination message from a base station control processor (BCP), the originating message and the call ID (call) ID) is transmitted and the standby message is ignored. In the standby, the originating message is ignored, and a task having the same call ID as the active one is generated by the _sig_create_org (ter) _as_cc signal generated by being transmitted from the active side. Match Call ID when creating (Call Task),

When a channel allocation success message is transmitted from the base station control processor and a resource is allocated, the standby does not allocate resources when the channel allocation success message is transmitted, and waits for information on the allocated resource from the active, When the information of the resource is transmitted from the active while waiting for the information of the resource, it is characterized in that the method configuration transitions to the link active state (Link Active State) to match the resources of the vocoder (Vocoder).

1 is a diagram showing the configuration of a system for redundancy of CCP call processing software of a control station according to the present invention;

2 is a view illustrating a call processing process according to call processing software duplication according to the present invention;

3 is a diagram illustrating a DB update process when a standby board is restarted in the duplication method of call processing software according to the present invention.

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

10 ..... MSC

20 ..... Control Station (BSC)

21 ..... Call Control Processor (CCP)

22 ..... Transcoder and Selector Bank (TSB)

30 ..... Base Station (BTS)

31 ..... Base station control processor (BCP)

32 ..... Channel Elements (CE)

40 ..... MS

50 ..... Base Station Manager (BSM)

Hereinafter, a preferred embodiment of the "duplication method of call processing software" of the present invention according to the above technical concept will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a configuration of a system for duplication of CCP call processing software of a control station according to the present invention.

As shown therein, a mobile switching center (MSC) 10 which is in charge of management of subscribers and switching between base station controllers, and a base station controller (BSC) 20 which manages respective base stations A base station (BTS) that is in charge of a wireless connection with the terminal, a mobile station (MS) 40 capable of moving a wireless connection with the base station 30, and A base station manager (BSM) 50 which manages the base station controller 20 and the base stations 30 and is responsible for maintenance of the base stations.

In addition, the base station controller 20 controls all functions related to call processing of the base station controller 20 and is a call control processor (CCP) which is duplicated into an active side and a standby side. 21, and a transcoder and selector bank (TSB) 22 in the base station controller.

In addition, the base station 30 receives from the mobile station 40 and a base station control processor (BCP) 31 which controls the overall functions of the base station 30 and is dualized into an active side and a standby side. A channel element for demodulating a signal and transmitting the demodulated signal to the base station controller 20 and modulating the packet data received from the base station controller 20 and transmitting the modulated packet data to the mobile station 40. 32).

Looking at the call processing process for the duplication of the call processing software according to the present invention through the above configuration as follows.

2 is a diagram illustrating a call processing process according to call processing software duplication according to the present invention.

Referring to FIG. 2, a call ID matching when generating a call task is as follows.

The Active Main Task, which receives an Origination (Page Response) Message from the base station control processor (hereinafter abbreviated as "BCP"), creates a Child Task and standbys with _sig_create_org (ter The outgoing message and the call ID are placed on the _as_cc signal and transmitted.

In this case, the standby message ignores the origination message and generates a task of the same call ID as the active one by the _sig_create_org (ter) _as_cc signal generated by being transmitted from the active side.

In addition, referring to FIG. 2, the Vocoder resource matching will be described as follows.

When receiving a Channel Assignment Complete Message from the BCP, the CCCB allocates DSP resources. When the standby receives the channel allocation success message, the standby does not allocate resources and waits for information on the allocated resources from the active.

If the information of the resource is transmitted from the active while waiting for the information of the resource, it is allocated and transitioned to the link active state.

Meanwhile, the task generation point in the call processing process is as follows.

That is, the active CCP generates a task when receiving msg_mob_orig_bc including the origination information of the terminal, and transmits sig_create_org_as_cc to the standby CCP. The standby CCP that receives this generates a task using the received call ID and performs the next call processing.

In addition, the resource allocation time in the call processing process is as follows.

That is, in the active CCP, when receiving _msg_ch_assign_compl_bc indicating that the base station resources are allocated from the BCP, the vocoder resources are allocated and the resource information allocated to the standby CCP is transmitted. The standby CCP that receives this allocates the received vocoder resources and performs the next call processing.

3 is a diagram illustrating a DB update process when a standby board is restarted in the duplication method of call processing software according to the present invention.

As shown in the figure, when the CCP software block is restarted, if it is in the standby state, it sends a database update request signal (_sig_db_update_req_sa_cc) to the active main task.

The active main task receiving the _sig_db_update_req_sa_cc signal selects a database in which a call is in progress and transmits a response signal (_sig_db_update_rsp_as_cc) to the request signal.

In this case, the above transmission method individually transmits a database to which a call is allocated one by one. At this time, a sequence is added during database transmission and transmitted, and a wrong database can be processed upon reception.

On the other hand, in the standby main task receiving the signal is confirmed that the normal received all the sequence of the received database, the call task (Call Task) is created to perform the call processing.

On the other hand, in the signal communication, when an event for transmitting a signal to the other blocks other than the CCP occurs, it checks its own state, and if it is active, transmits a signal, and itself is in a standby state. It just returns.

As described above, the present invention relates to a duplication method in call control processor (CCP) call processing software of a control station (BSC), wherein the CCP software block generates one task for each mobile subscriber and creates a call. Perform the process.

In addition, all call processing information of the active board is maintained on the standby board, and the service board is immediately changed in case of failure of the active board to provide service continuity.

Here, the following conditions must first be met for the above redundancy.

First, the active and standby call IDs must match.

That is, when one subscriber is transferred to the call ID 100 by the active board failure in the CCP, the standby board must have the same call ID 100 as seen from other blocks. Routing)

Next, information of vocoder resources allocated and managed by the CCP must match.

That is, the vocoder information allocated by call ID 100 should be the same between active and standby.

Next, the active and standby call databases must match.

That is, call task information managed by the active board and the standby board should be identical to each other. When a failure of the active board occurs, the standby board transitions from the standby board to the active board to perform the same call processing as the active board.

According to the present invention "duplication method of call processing software" described above, the active and standby call ID (Active & Standby Call ID), the voice resource (Vocoder) resource managed by the CCP, active and standby call database ( By matching each DB), all the call processing information of the active board can be maintained on the standby board, so that in case of failure of the active board, the service is immediately switched off from the standby board to stop the service. Since it can be provided without the service, it has the advantage of ensuring the continuity of services in case of failure.

Claims (6)

In the duplication method of a communication system requiring continuity of services, After generating a child task from an active main task that receives an origination message from a base station control processor (BCP), the originating message and the call ID (call) ID) is transmitted and the standby message is ignored. In the standby, the originating message is ignored, and a task having the same call ID as the active one is generated by the _sig_create_org (ter) _as_cc signal generated by being transmitted from the active side. Match the Call ID at the time of creation of (Call Task); When a channel allocation success message is transmitted from the base station control processor and a resource is allocated, the standby does not allocate resources when the channel allocation success message is transmitted, and waits for information on the allocated resource from the active, When the information of the resource is transmitted from the active while waiting for the information of the resource, the duplication method of call processing software, characterized in that the transition to the link active state (Link Active State) to match the resources of the vocoder (Vocoder). . The method of claim 1, wherein the task generation time is When the active call control processor (CCP) receives a message including the origination information of the terminal, it generates a task and transmits an outgoing message generation signal to the standby call control processor, and the standby call control processor receives the task with the received call ID. A method of redundancy of call processing software, characterized in that for generating the next call processing. The method of claim 1, wherein the resource allocation time, When the active call control processor receives a message indicating that the base station resources have been allocated from the base station control processor, it allocates the vocoder resources and transmits the resource information to the standby call control processor. A method for redundancy of call processing software, which allocates the received vocoder resources and performs the next call processing. The method of claim 1, further comprising: updating a database (DB) when the standby board is restarted. Transmitting a database update request signal (_sig_db_update_req_sa_cc) to the active main task if it is in a standby state when the call control processor software block is restarted; Selecting a database in which a call is ongoing in the active main task receiving the signal and transmitting a response signal to the request signal; Checking the sequence of the database received from the standby main task receiving the signal, if it is confirmed that all is normally received call processing comprising the step of creating a call task (Call Task) to perform a call processing Software redundancy method. The method of claim 4, wherein the response signal is transmitted in response to the request signal. In the above transmission method, the database to which the call is allocated is transmitted one by one, and a sequence is added during transmission of the database so that the wrong database can be processed upon reception. The method of claim 4, wherein the signal communication, When an event for transmitting a signal to another block other than the call control processor occurs, it checks its own state and transmits a signal if it is active, and returns if it is in a standby state. How to duplicate call processing software.