KR100372051B1 - Method for processing call in IMT-2000 system - Google Patents

Abstract

In the present invention, a next-generation mobile station generates a child process corresponding to a call generated when a control station processes a call transmitted from a terminal or an exchange, and processes a call generated from a child process independently of the main process. The present invention relates to a call processing method in a communication system. The present invention relates to a call processing request message sent from a terminal or an exchange station in a main process in charge of call processing in a base station or a control station, and generates a child process and generates a subprocess. Control to handle the generated call. The generated child process allocates resources for call processing from the main process and processes the generated call independently.

Description

Method for processing call in next generation mobile communication system {Method for processing call in IMT-2000 system}

The present invention relates to a call processing method in a next generation mobile communication system (especially an IMT-2000 system), and in particular, a child process corresponding to a call generated when a control station processes a call transmitted from a terminal or an exchange station. The present invention relates to a call processing method in a next-generation mobile communication system that generates and processes a call generated in an independent process independently of the main process.

In general, the IMT-2000 system, which has emerged as a next generation mobile communication system, has a structure in which a plurality of base stations and one control station are connected, and a plurality of control stations are connected to one core network.

1 is a diagram illustrating a configuration of a general next generation mobile communication system having the above structure.

Here, reference numeral 10 to reference numeral 10 + n denotes a mobile station (terminal), and reference numeral 20 to reference numeral 20 + n denotes a base station for wirelessly interfacing data (video, audio, packet data) with the mobile station 10. Reference numeral 30 to reference numeral 30 + n denotes a control station for managing the base stations 20 to 20 + n, and reference numeral 40 denotes a control station for interworking data of the control stations 30 to 30 + n. A core network is transmitted to networks and selectively transmits data transmitted from interworking networks to the control stations 30 to 30 + n.

Here, the core network 40 includes a mobile communication switch 41, a PSDN network 43 connected to the Internet network 42, and a PSTN network 44 connected to the mobile communication switch 41. In addition to the PSTN network 44, the mobile communication switch 41 may also be interworked with 2G cellular networks, ISDN networks, and B-ISDN networks.

In the next generation mobile communication system having such a structure, as is well known, a plurality of terminals (mobile stations) are connected to one base station, and a plurality of base stations are connected to one control station, and similarly, the plurality of control stations are one core. It is connected to a network and interfaces data.

In such a general next generation mobile communication system, the main process in charge of the call processing in the conventional base station or control station arranges all generated calls (originated calls, incoming calls, handoff calls, etc.) in the order of occurrence, and the arrangement order thereof. Process them sequentially.

For example, if 1000 calls have occurred, the main process in charge of call processing of the base station or the control station sequentially processes the generated calls by turning 1000 loops.

That is, the conventional call processing method as described above has a problem that delay time is generated by the number of generated calls because the call processing is sequentially performed according to the generated calls.

In addition, the ATM transmission path connecting the base station and the control station is a high performance / large capacity of 155 Mbps. When 1000 calls are generated by the conventional call processing method as described above, 1000 calls are sequentially ordered from the viewpoint of the ATM transmission path. Since it is the same as sending data one by one, it also causes a disadvantage that the utilization of resources is reduced.

Therefore, the present invention has been proposed to solve all the problems that occur during the call processing in the main process responsible for the conventional call processing as described above,

An object of the present invention is to generate a child process corresponding to a call generated when a control station handles a call transmitted from a terminal or an exchange, and to process a call generated in a child process independently of the main process. A next generation mobile communication system provides a call processing method.

The present invention for achieving the above object,

In the main process in charge of call processing in the base station or control station, when a call setup request occurs, a child process is generated, the child process ID is recorded, only this ID is managed, and the next call setup request is waited.

In addition, the generated child process is allocated a new ATM bearer from the main process and used for all subsequent control / signal message transmissions. At the end of the call, the child process returns all resources and informs the main process.

After receiving the call termination message from the child process, the main process removes the process ID and transitions to the message waiting state.

That is, the present invention provides a call processing method of a next-generation mobile communication system consisting of a mobile station, a base station, a control station and a core network, wherein a call setup request message is transmitted from a terminal or an exchange station in a main process in charge of call processing in the base station or control station. A first process of, if so, generating a child process and controlling to process a call generated in the child process; The generated child process includes a second process of processing a call generated by allocating a resource for call processing from the main process.

1 is a view showing the configuration of a general next generation mobile communication system,

2 is a flowchart illustrating a call processing method in a next generation mobile communication system according to the present invention. FIG. 2A is a flowchart illustrating a call processing process of a main process, and FIG. 2B is a flowchart illustrating a call processing process of an own process.

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

10 to 10 + n: mobile station

20 to 20 + n: base station

30 to 30 + n: control station

40: core network (CN)

Hereinafter, described in detail with reference to the accompanying drawings, preferred embodiments of the present invention according to the technical spirit as described above.

Next-generation mobile communication system to which the present invention is applied is the same as the general next-generation mobile communication system shown in FIG. 1, and the present invention is applied to a process that handles call processing in a base station or a control station in the configuration as shown in FIG. .

2 is a flowchart illustrating a call processing method in a next generation mobile communication system according to the present invention.

First, FIG. 2A is a flowchart illustrating a call processing process in a main process, as shown in FIG. 2, waiting for a message reception (S11), receiving a call setup message transmitted from a terminal or an exchange station (S12); Generating a child process (S13), registering an ID of the generated child process (S14), transferring a call setup request message to the child process (S15), and a call processing end signal from the child process. Searching whether S has been received (S16), and when the call processing end signal is received from the child process, deleting the registered child process ID (S17).

In the call processing process of the main process, the main process first performs an initialization process of the system in step S11, and maintains a message reception waiting state when the initialization process ends.

Next, in step S12, the call setup request message transmitted from the terminal or the switching center is received in the message reception waiting state, and in step S13, a subprocess is generated. The child process created here runs independently of the main process.

Next, in step S14, the process ID of the generated child process is registered as an array value. In step S15, the call establishment request message is transmitted to the child process. After that, it enters the standby state for receiving a message.

Next, in the message reception waiting state, it is checked whether the end signal of the call generated from the child process is received as in step S16. When the end signal of the call generated from the child process is transmitted, the ID of the child process registered in step S17 is deleted. Return to the message waiting state.

2B is a flowchart illustrating a call processing process in a child process.

As shown, step S21 of recording its process ID, step S22 of receiving a call setup request message from the main process, step S23 of requesting resource allocation, and receiving an ATM bearer Checking the process ID and the arrangement value (S24), receiving the channel resource, completing the service preparation (S25), maintaining the service state (S26), and receiving the call termination message. And a step S27 of releasing an ATM bearer and channel resources when a call termination message is received, and a step S29 of transmitting a subprocess termination signal to a main processor.

In the call processing process in the child process thus made, first, the child process generated in step S21 records its own process ID. In step S22, a call setup request message is received from the main process, and a resource allocation corresponding to the service requested in step S23 is requested.

Next, at step S24, an ATM bearer is allocated, and a process ID and an array value are configured. In step S25, an available channel is allocated and is ready for service.

Then, in step S26, the service is performed, and in step S27, it is checked whether a call termination message is received from the terminal or the switching center while maintaining the service state.

When the call termination message is received from the terminal or the switching center as a result of this checking, the ATM bearer and channel resources allocated in the step S28 are released, and in step S29, the subprocess termination signal is transmitted to the main process.

The main process then releases the corresponding ID from the process ID table, which consists of array values, upon receipt of the subprocess termination message.

That is, the main process in the present invention performs the procedure as well known each time a call occurs. In other words, when there are 1000 call setup requests from the terminal or switching center, the main process generates 1000 child processes, and each child process receives its own ATM bearer for transmission and reception and allocates resources. In this case, messages for 1000 calls are simultaneously transmitted on the ATM transmission path, which can utilize a high performance (155Mbps) ATM transmission system, and performs a service service request as each child processes are mapped 1: 1. Can be performed.

According to the above-described "call processing method in the next-generation mobile communication system", it is possible to quickly perform a call service required from each terminal or switching center without delay, and if a handoff call occurs during service, handoff call performance is also performed. It is also easy to use the high-performance ATM transmission system has the advantage of increasing the utilization of resources.

In addition, the call service request received from the terminal or the switching center can be performed without delay, and it can cope quickly with the handoff or additional service request during the service, thereby minimizing the user's request response and efficiently managing the multimedia service. There is also an advantage to maximize the processing speed.

Claims (4)

In the call processing method of the next generation mobile communication system consisting of a mobile station, a base station, a control station and a core network, A first process of generating a child process and controlling to process a call generated in the child process when a call setup request message is transmitted from the terminal or the exchange station in the main process in charge of call processing in the base station or the control station; The generated child process includes a second process of processing a call generated by allocating a resource for call processing from the main process. The method of claim 1, wherein the first process comprises: Waiting for message reception, receiving a call setup request message sent from a terminal or an exchange station, generating a self process when a call setup request message is received, and registering an ID of the generated child process Transmitting a call setup request message to the generated child process, and searching for whether a call processing end signal is transmitted from the child process in a message reception waiting state after delivering the call setup request message to the child process; ; And deleting the registered child process ID when the call processing end signal is transmitted from the child process as a result of the search. The method of claim 1, wherein the second process comprises: recording its process ID, receiving a call setup request message from the main process, requesting resource allocation, and assigning an ATM bearer to the process ID And configuring an array value, allocating channel resources, completing service preparation, maintaining a service state, checking whether a call termination message has been received, and receiving a call termination message. And releasing bearer and channel resources, and transmitting a subprocess termination signal to a main processor. The method according to claim 1 or 3, wherein the subprocess allocates an ATM bearer to independently transmit and receive a corresponding channel.