KR100465428B1 - Method of Managing Tone Source in Mobile Telephone Switching System - Google Patents

Abstract

The present invention relates to a method for managing a tone resource of a mobile switching system. In particular, the present invention relates to a limited tone resource provided from tone equipment of a network connection system using a cell multicopy function for point-to-multipoint connection of an ATM switch. The present invention relates to a tone resource management method of a mobile switching system.

Conventionally, by transmitting only one tone source per ATM cell using ATM Adaptation Layer 1 (ALL 1), the ATM link is less efficient and does not establish a tone connection when necessary. There was a problem that the traffic efficiency was reduced because the connection is continuously provided tones.

In addition, there is a problem in that one tone cannot be provided to multiple subscribers because resource management is not performed to utilize the cell multicopy function.

The present invention improves the efficiency of the ATM link by loading multiple tone sources per ATM cell using ATM Adaptation Layer 2 (AAL2), and the IMT-2000 mobile switching system only when a tone connection is required for each tone. By establishing a connection between the network and the network and removing the tone when no tone connection is required, it improves traffic efficiency and manages resources to utilize cell multi-copy function for the tone connection. Can be provided to multiple subscribers at the same time.

Description

Tone Resource Management Method of Mobile Attendant System {Method of Managing Tone Source in Mobile Telephone Switching System}

The present invention relates to a method for managing a tone resource of a mobile switching system. In particular, the present invention relates to a limited tone resource provided from tone equipment of a network connection system using a cell multicopy function for point-to-multipoint connection of an ATM switch. The present invention relates to a tone resource management method of a mobile switching system.

In general, the tone resources provided to the International Mobile Telecommunications-2000 (MST) Mobile Switching Center (MSC) may be divided into 32 tones provided from tone equipment of an inter working unit (IWU). For each tone, a fixed VPI / VCI (Virtual Path Identifier / Virtual Channel Identifier) is allocated to form a connection, and the tone is provided as an ATM end node through ATM Adaptation Layer 1 (AAL1).

To provide tone resources for a conventional IMT-2000 mobile telephone exchange system, the network connection system boots up, searching the database related to the tone connection, making a connection with the fixed VPI / VCI assigned to each tone, and providing the tone source. In order to connect the channels of the device performing the AAL1 processing and each tone through the time switch of the network connection system.

Also, in order to convert the AAL1 processed tone source into an ATM cell and transmit it to the IMT-2000 mobile switching system, the ATM cell converter is connected to the AAL1 device, and the tone is assigned to the IMT-2000 mobile phone by the assigned fixed VPI / VCI. Transfer to the exchange system.

In the IMT-2000 mobile switching system, a fixed VPI / VCI assigned to each tone is performed to the ATM interface device connected to the network connection system, thereby receiving the corresponding tone from the network connection system.

The provided tone resource is provided to one subscriber upon request of tone connection in the call processing process as an end node in the IMT-2000 mobile switching system.

As described above, conventionally, by using ALL 1 (ATM Adaptation Layer 1), only one tone source per ATM cell is carried out, which reduces the efficiency of the ATM link and does not establish a connection for tone provisioning whenever necessary. In other words, the traffic efficiency is inferior because the connection is provided for the tone in advance and the tone is continuously provided.

In addition, there is a problem in that one tone cannot be provided to multiple subscribers because resource management is not performed to utilize the cell multicopy function.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned general problems, and its purpose is to increase the efficiency of the ATM link by loading multiple tone sources per ATM cell using ATM Adaptation Layer 2 (AAL2). By establishing the connection between the IMT-2000 mobile switching system and the network access system only when a tone connection is required, and removing the connection when the tone connection is not needed, it improves traffic efficiency and makes cell multi-connection for the tone connection. By managing resources to utilize the copy function, one tone is simultaneously provided to multiple subscribers.

1 is a diagram showing a tone resource management structure of a mobile switching system according to an embodiment of the present invention;

2 is a diagram illustrating a tone resource management method of a mobile switching system when receiving a tone connection request signal from a call processing block according to an embodiment of the present invention;

3 is a diagram illustrating a tone resource management method of a mobile switching system when receiving a tone connection response signal from an IPC server according to an embodiment of the present invention;

4 is a diagram illustrating a tone resource management method of a mobile switching system when receiving a tone release request signal from a call processing block according to an embodiment of the present invention;

* Description of the symbols for the main parts of the drawings *

10: ATM interface 210: ATM conversion module

20: call processing block 220: AAL2 data processing unit

30: IPC server 230: AAL5 data processing unit

40: tone announcement control unit 240: IPC server

100: IMT-2000 mobile telephone switching system 200: manganese connection system

The tone resource management method of the mobile telephone switching system of the present invention for achieving the above object comprises the steps of: obtaining tone connection information corresponding to a tone number from a tone connection information database upon receiving a tone connection request from a call processing block; ; Obtaining a current value of a tone connection list from the tone connection information and obtaining the number of cell multi-copyes of the current value; If the cell multicopy number of the current value is smaller than the cell multicopy maximum value, increase the cell multicopy number of the current value by 1, generate a tone connection ID, and generate a tone connection ID to index the tone connection ID. Assigning a process; Storing a current value of an outgoing connection information, a call processing process ID, and a tone connection list of tone connection information in the allocated dynamic memory; Connecting and processing a tone source with a subscriber by using outgoing connection information and incoming connection information of a database having the tone connection ID as an index; And transmitting the tone connection response signal to the call processing block.

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

As shown in FIG. 1, the tone resource management structure of the mobile telephone switching system according to the embodiment of the present invention is configured to provide various tones to subscribers of the IMT-2000 mobile switching system 100. Tone equipment 250, and the two systems between the ATM interface 10, which is an IMT-2000 mobile switching system interface device, and the ATM conversion module 210 and optical processing the ATM interface of the network connection system 200 It is connected by an optical link, and the traffic processing includes the ALL2 data processing unit 220 for AAL2 processing of the AAL2 processing firmware (Firmware) of the ATM interface 10 and the network connection system 200, and the ALL5 for AAL5 processing. It includes a data processor 230.

The connection between the IMT-2000 mobile telephone exchange system 100 and the network connection system 200 is implemented by implementing the IPC server 30 using the AAL5 data processor 230 in software.

And receiving a tone connection request from the IMT-2000 mobile telephone exchange system 100 to perform connection establishment and disconnection processing for connection and disconnection of a tone source and resource management for utilizing a cell multicopy function. It comprises a guide broadcast control unit 40.

When receiving the tone connection request signal in the call processing block according to an embodiment of the present invention, the tone resource management method of the mobile switching system will be described with reference to the flowchart of FIG.

First, upon receiving a tone connection request (eg, tone number, outgoing connection information) in the call processing block 20 of the IMT-2000 mobile telephone exchange system 100 (step S21), the tone announcement broadcasting control unit 40 receives the tone. Tone connection information corresponding to the number, that is, tone connection information corresponding to the tone number of the tone connection information database (hereinafter referred to as "X") is obtained from the tone connection information database (step S22), and tone connection of the tone connection information X is performed. After obtaining the current value of the tone concatenation list from the list (hereinafter referred to as "T_LP") and the tone concatenation list maximum value (hereinafter referred to as "M") (step S23), the number of multiple cell copies of the T_LP of the corresponding X (hereinafter Is referred to as "Z" (step S24).

It is determined whether Z of T_LP of X obtained as described above is smaller than the maximum value (hereinafter referred to as "Y") of the majority cell copy (step S25).

If Z of T_LP of X is smaller than Y, increase Z of T_LP of X to 1, allocate dynamic memory to store caller information (hereinafter referred to as " RID "), and tone-link memory addresses. The ID (hereinafter referred to as "TCI") is stored in a database (hereinafter referred to as "S") having an index (Step S26). Store the calling RID, the call processing process ID, and the T_LP in the allocated memory (step S27), and request the tone connection to the network connection system 200 through the IPC server 30 using the calling RID in the allocated memory of the corresponding S. After the connection, the subscriber and the tone source are connected (step S28). If a tone connection response (eg, TCI, VPI for tone source connection, VCI, CID, AAL2 channel) is received in the call processing block 20, The tone source connection information between the network connection system 200 and the IMT-2000 mobile switching system 100 using the VPI, VCI, and CID values assigned to the tone source. The incoming RID and AAL2 channel are stored in the T_LP's incoming RID and AAL2 channel, and S is obtained by indexing the TCI. Then, the incoming RID and X's T_LP's incoming RID are used in the memory pointed to by S. Connect tone source with subscriber and request tone connection with call processing block By sending the response signal (step S29), the signal transitions to the signal reception state (step S30).

On the other hand, if Z of T_LP of X is greater than or equal to Y, if Z of T_LP of X is the cell multicopy maximum value (hereinafter referred to as "Y"), then T_LP of X is removed from the tone connection list, and Change T_LP to the next tone link list. However, if Z in T_LP of X is greater than Y, Z is increased by 1, TCI, which is the tone connection ID, is created, dynamic memory is allocated to S, a database whose TCI is indexed, and the memory address is indexed by TCI. The calling RID, the call processing process ID, and the T_LP are stored in the memory allocated to S (step S31). Then, the subscriber and the tone source are connected by using the originating RID and the incoming RID of T_LP of X. If the tone connection request is transmitted to the network connection system 200 through the IPC server 30 (step S33), the cell The tone connection request response signal is transmitted to the call processing block 20 using the multi copy function. Subsequently, the state changes to the signal reception state (step S30).

When receiving the tone connection response signal in the IPC server according to an embodiment of the present invention, the tone resource management method of the mobile switching system will be described with reference to the flowchart of FIG.

First, upon receiving the tone connection response (eg, TCI, AAL2 channel, VPI, VCI, CID) from the IPC server 30 (step S31), T_LP is obtained from memory allocated to S, which is a database whose index is TCI (step S31). Step S32).

The tone announcement broadcasting control unit 40 analyzes the TCI to obtain a tone number, wherein the tone number is obtained by dividing the TCI by M and Y (step S33).

Then, the tone connection information X corresponding to the tone number is obtained from the tone connection information database (step S34). Then, the AAL2 channel is stored in the AAL2 channel of the T_LP of the tone connection information X, and after the tone source connection processing using the VPI, VCI, and CID, the RID of the tone source is stored in the destination RID of the T_LP of X (step). S35).

The subscriber and the tone source are connected by using the originating RID of S, which is the database whose TCI is the index, and the incoming RID of T_LP of X (step S36).

After the tone connection response signal is transmitted to the call processing block (step S37), the signal transition state is shifted (step S38).

When receiving the tone release request signal in the call processing block according to an embodiment of the present invention, the tone resource management method of the mobile switching system will be described with reference to the flowchart of FIG.

Upon receiving the tone release request in the call processing block 200 of the IMT-2000 mobile telephone exchange system 100 (step S41), the current value of the tone connection list of X in the memory allocated to S, the database having the TCI index, is determined. T_LP is obtained (step S41).

The tone announcement broadcasting processing unit 40 analyzes the TCI to obtain a tone number. In this case, the tone number is obtained by dividing the TCI by M and Y (step S43).

Subsequently, when tone connection information X corresponding to the tone number is obtained from the tone connection information database (step S44), Z, which is the number of cell multi-copy copies of T_LP of X, is obtained, and the Z of T_LP of X is reduced by 1 (step S45). ).

Then, the connection between the subscriber and the tone source is released using the originating RID of the memory allocated to S, the database having the corresponding TCI, and the incoming RID of the T_LP of X, and then the dynamic memory allocated to the S is released ( Step S46).

At this time, it is determined whether Z of T_LP of X is 0, and if Z of T_LP of X is greater than 0, a signal may be received from the call processing block 20 of the IMT-2000 mobile telephone exchange system 100. Return to the state

However, if Z of T_LP of X is 0, if Z of T_LP of X is 0, after obtaining the AAL2 channel stored in the AAL2 channel of T_LP of X, the IPC server ( The tone release request is made to the manganese connection system 200 via 30), and the tone source release process is performed (step S48). Then, the destination RID and AAL2 channel values of T_LP of X are initialized. After inserting T_LP into the tone connection list of X (step S49), a signal is received from the call processing block 20 of the IMT-2000 mobile switching system 100. It returns to the state which can be received (step S50).

Although the preferred embodiments of the present invention have been described in detail above, it will be understood by those skilled in the art that the present invention may be modified or modified in various ways. Therefore, changes of the embodiments of the present invention will not be able to escape the technical scope of the present invention.

As described above, the present invention improves the efficiency of the ATM link by loading multiple tone sources per ATM cell using ATM Adaptation Layer 2 (AAL2), and moves the IMT-2000 only when a tone connection is required for each tone. By establishing the connection between the telephone exchange system and the network access system and removing the connection when the tone connection is not needed, the resource management is performed to increase the traffic efficiency and to utilize the cell multi-copy function for the tone connection with the connection. Tones can be provided to multiple subscribers simultaneously.

Claims (4)

When the tone connection request is received from the call processing block, obtaining tone connection information corresponding to a tone number from a tone connection information database; Obtaining a current value of a tone connection list from the tone connection information and obtaining the number of cell multi-copyes of the current value; If the cell multicopy number of the current value is smaller than the cell multicopy maximum value, increase the cell multicopy number of the current value by 1, generate a tone connection ID, and generate a tone connection ID to index the tone connection ID. Assigning a process; Storing a current value of an outgoing connection information, a call processing process ID, and a tone connection list of tone connection information in the allocated dynamic memory; Connecting and processing a tone source with a subscriber by using outgoing connection information and incoming connection information of a database having the tone connection ID as an index; And transmitting the tone connection response signal to the call processing block. The method according to claim 1, The process of linking the subscriber and the tone source using the outgoing connection information and the incoming connection information of the database uses the cell multicopy function of ATM. The method according to claim 1, Receiving a tone connection response from the IPC server, and obtaining a current value of a tone connection list from a dynamic memory allocated to a database having a tone connection ID as an index; Obtaining a tone number from the tone connection ID, and then obtaining tone connection information corresponding to the tone number; After storing the AAL2 channel in the AAL2 channel of the current value of the tone connection list of the tone connection information, and performing the connection processing of the tone source using VPI, VCI, and CID, the connection information of the tone source is called and received in the tone connection list. Storing the information; Connection processing of a tone source using outgoing connection information of a database having the tone connection ID as an index and incoming connection information of a current value of a tone connection list of tone connection information; And transmitting a tone connection response signal to the call processing block, and then transitioning to a signal reception state. The method according to claim 1, Receiving a tone release request from the call processing block, obtaining a tone number by analyzing a tone connection ID in a tone announcement broadcasting processor; Obtaining tone connection information corresponding to the tone number and then obtaining a current value of a tone connection list in a dynamic memory; Reducing the number of cell multi-copy of the current value of the current list of tone connection information by 1 and releasing the dynamic memory allocated to the database; When the number of cell multi-copy of the current value of the tone connection list including the tone connection information is 0, after obtaining the AAL2 channel stored in the AAL2 channel of the current value of the tone connection list, releasing the connected tone source Requesting a tone release to the manganese access system via IPC; A method of managing a tone resource of a mobile switching system comprising the step of releasing a connection with a network connection system providing a tone source.