KR100361660B1 - System for improvement of call performance in ATM - Google Patents

Abstract

According to the present invention, a signal asynchronous transmission mode coordination layer of a main processor, in which calls transmitted from a general subscriber module, a low speed subscriber module, or high speed subscriber modules are concentrated, is mounted in a subscriber module, thereby distributing the transmitted calls. A call processing enhancement system of an asynchronous transfer mode switch that can prevent a delay,

The present invention provides a media gateway module for receiving subscribers in asynchronous transmission mode and configured for a signal asynchronous transmission mode coordination layer; A subscriber multiplex module for accepting an asynchronous transmission mode subscriber and configured for a signal asynchronous transmission mode harmony layer; An asynchronous transmission mode interface module for interfacing a call transmitted from the media gateway module and the subscriber multiplex module and for configuring a signal asynchronous transmission mode harmony layer; A switching module for switching a call transmitted from the asynchronous transmission mode interface module; And a main processor for processing and maintaining a call transmitted from the media gateway module, the subscriber multiplex module, and the asynchronous transmission mode interface module.

Description

System for improvement of call performance in ATM}

The present invention relates to a call processing enhancement system of an asynchronous transmission mode switch, and more particularly, to a signal asynchronous transmission mode harmony layer of a main processor in which calls transmitted from a general subscriber module, a low speed subscriber module, or a high speed subscriber module are concentrated. The present invention relates to a call processing enhancement system of an asynchronous transfer mode switch that is mounted in a subscriber module to distribute processing of the transmitted call, thereby preventing call processing delay.

As shown in FIG. 1, the call processing system of the conventional asynchronous transmission mode switch includes a Subscriber Interface Module (SIM) in which a general Asynchronous Subscriber (ATM) subscriber is mounted, and a trunk interface module in which a trunk is mounted. Interface Module (TIM), Frame Relay / Circuit emulation interworking Module (FCM), which handles frame relay and circuit execution, High-speed frame relay, and High-speed frame relay circuit execution module, which handles high speed circuit performance. High speed frame relay / circuit emulation interworking module (HFCM), the general subscriber interface module (SIM), trunk interface module (TIM), transmitted from the frame relay circuit execution module (FCM), high-speed frame relay circuit execution module (HFCM) Switch Fabric Module (SFM) for switching the call, is switched from the switching module (SFM) and transmitted A main processor (MP) for processing and maintaining a call, wherein the main processor (MP) includes an asynchronous call control block (ACC) for controlling and processing an asynchronous transmission mode call input; It consists of a Signaling ATM Adaptation layer (SAAL) for harmonizing the input signal in an asynchronous transmission mode.

In the call processing system of the conventional asynchronous transfer mode switch configured as described above, when a call is generated from the general subscriber mounted in the subscriber interface module (SIM), the generated signal data is asynchronous call control block mounted in the main processor (MP). To be sent to the ACC, it is first sent to the switching module SFM.

In the switching module (SFM), the signal data of the general subscriber is transmitted to the signal asynchronous transmission mode harmony layer (SAAL) of the main processor (MP), and the signal data transmitted to the signal asynchronous transmission mode harmony layer (SAAL) is asynchronously transmitted. Mode is harmonized with call control processing and setup in the asynchronous call control block (ACC).

The processed call is transmitted back to the signal asynchronous transmission mode harmony layer (SAAL), and the transmitted call is transmitted from the signal asynchronous transmission mode harmony layer (SAAL) to the signal data through the switching module (SFM) through the general subscriber interface layer (SIM). It is transmitted to the subscriber through.

In the case of the relay call, it is transmitted to the switching module (SFM) through the trunk interface module (TIM) and to the signal asynchronous transmission mode coordination layer (SAAL) of the main processor (MP). After the call is processed, the signal is transmitted to the trunk interface module (TIM) through the signal asynchronous transmission mode harmony layer (SAAL) and the switching module (SFM).

The subscriber connected to the frame relay circuit execution module (FCM) and the high speed frame relay circuit execution module (HFCM) is also transmitted to the switching module (SFM) and the signal asynchronous transmission mode coordination layer (SAAL) of the main processor (MP). And the frame relay circuit execution module (FCM) and the high speed frame relay circuit execution module through the signal asynchronous transmission mode coordination layer (SAAL) and the switching module (SFM). HFCM).

As such, all calls transmitted from the subscriber interface module (SIM), the trunk interface module (TIM), the frame relay circuit execution module (FCM), and the high speed frame relay circuit execution module (HFCM) are called through the switching module (SFM). Since the call processing is focused on the signal asynchronous transmission mode coordination layer (SAAL) of the main processor (MP) that processes and maintains the data, the centralized call, the high speed subscriber, and the relay call are not generated. However, when a concentrated call is instantaneously generated from a large number of subscribers, the signal asynchronous transmission mode coordination layer (SAAL) is a bottleneck, and this bottleneck is caused by a call delay, which reduces the call processing speed. Had.

Accordingly, an object of the present invention is to install the signal asynchronous transmission mode matching module of the main processor for processing and maintaining a call transmitted from a general subscriber, a low speed subscriber, or a high speed subscriber during the asynchronous transmission mode call processing, in the subscriber module and the interface module. It is to distribute a call that is transmitted through the service.

Another object of the present invention is to distribute a plurality of calls generated by the instantaneous concentration from the subscribers to prevent bottlenecks in the signal asynchronous transmission mode coordination module from the concentrated call to prevent call processing delays to improve call processing capability. To improve.

In order to realize the above object, the present invention provides a media gateway module including a subscriber which is not an asynchronous transmission mode and a signal asynchronous transmission mode coordination layer; A subscriber multiplex module for accepting an asynchronous transmission mode subscriber and configured for a signal asynchronous transmission mode harmony layer; An asynchronous transmission mode interface module for interfacing a call transmitted from the media gateway module and the subscriber multiplex module and for configuring a signal asynchronous transmission mode harmony layer; A switching module for switching a call transmitted from the asynchronous transmission mode interface module; A main processor including a media gateway control block, a subscriber multiplex control block, and an asynchronous transmission mode interface call control block for processing and maintaining a call transmitted by being switched from the media gateway module, a subscriber multiplex module, and an asynchronous transmission mode interface module Characterized in that consisting of.

1 is a control block diagram of a call processing system of a conventional asynchronous transfer mode switch.

2 is a control block diagram of a call processing system of the asynchronous transfer mode switch of the present invention;

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

SIM; Subscriber interface module TIM; Trunk interface module

FCM; Frame Relay Circuit Execution Module HFCM; High Speed Frame Relay Circuit Execution Module

SFM; Switching module ACC; Asynchronous Transfer Mode Call Control Block

SAAL; Signal Asynchronous Transfer Mode Harmonic Layer

MP; Main processor MGM; Media gateway module

MGC; Media gateway control block

AMM; Subscriber multiplex module AMC; Subscriber Multiplex Control Block

AIM; Asynchronous Transfer Mode Interface Module

ACC; Asynchronous Transfer Mode Call Control Block

Hereinafter, described in detail with reference to the accompanying drawings, preferred embodiments of the present invention.

FIG. 2 is a control block diagram of a call processing apparatus of an asynchronous transfer mode switch of the present invention, in which a media gateway module (MGM) accommodated a subscriber other than an asynchronous transfer mode (ATM); An access multiplex module (AMM) for accommodating an asynchronous transmission mode subscriber (ATM); An asynchronous transmission mode interface module (AIM1, 2, 3) for interfacing a call transmitted from the media gateway module (MGM) and a subscriber multiplex module (AMM); A switching module (SFM), which is a basic unit 2.5G, for switching a call transmitted from the asynchronous transmission mode interface module (AIM1-AIM3); The media gateway module (MGM), the subscriber multiplex module (AMM) and the asynchronous transmission mode interface module (AIM) is composed of a main processor (MP) for processing and maintenance of the transmitted call.

The media gateway module (MGM), the subscriber multiplex module (AMM), and the asynchronous transmission mode interface modules (AIM1-AIM3) process the signal data to be transmitted to the main processor (MP). (SAAL1-5) is configured.

The signal asynchronous transmission mode harmony layer SAAL4 of the media gateway module MGM and the signal asynchronous transmission mode harmony layer SAAL5 of the subscriber multiplex module AMM are connected to the asynchronous transmission mode interface module AIM2 and AIM3. A signal asynchronous transmission mode coordination layer (SAAL2) and SAAL3 are respectively connected.

The main processor (MP) includes a media gate control block (MGC) for controlling translation of a call of the signal asynchronous transmission mode coordination layer (SAAL4) of the media gateway module (MGM); A subscriber multiplex control block (AMC) for translating and controlling calls of the signal asynchronous transmission mode coordination layer (SAAL5) of the subscriber multiplex module (AMM); Asynchronous transfer mode interface module (AIM) is composed of an asynchronous transfer mode interface call control block (ACC) for translation control of the call of the signal asynchronous transfer mode harmonic layer (SAAL1-3).

When the subscriber connected to the asynchronous transmission mode interface module (AIM1) makes a call to the media gateway module (MGM) accommodated by the subscriber, not the asynchronous transmission mode (ATM), the signal data sent by the subscriber is configured. Is transmitted to the signal asynchronous transmission mode harmony layer SAAL1 of the asynchronous transmission mode interface module AIM1, and the asynchronous transmission mode harmony layer SAAL1 is treated as an asynchronous transmission mode and is called an asynchronous transmission mode call of the main processor P. It is passed to the control block (ACC).

The asynchronous transmission mode call control block (ACC) makes an incoming request to the asynchronous transmission mode interface module AIM2 in order to receive a media gateway module (MGM) after performing call processing such as number translation.

Therefore, the asynchronous transmission mode interface module AIM2 transmits signal data to the media gateway module MGM, and the media gateway module MGM notifies the media gateway control block MGC that an incoming call is requested.

Accordingly, the media gateway control block (MGC) controls the signal asynchronous transmission mode coordination layer SAAL4 of the media gateway module (MGM) so that the data signal is received by the subscriber rather than the asynchronous transmission mode accommodated.

That is, the subscriber call of the asynchronous transmission mode interface module AIM1 is transmitted to the asynchronous transmission mode interface module AIM2 and the media gateway module MGM through the switching module SFM.

On the contrary, when the subscriber who is not in the asynchronous transmission mode accommodated in the media gateway module MGM makes a call to the subscriber connected to the asynchronous transmission mode interface module AIM1, the subscriber is not the asynchronous transmission mode in the media gateway module MGM. The call is reported directly to the media gateway control block (MGC) of the main processor (MP) without going through the asynchronous transmission mode coordination layer (SAAL4).

The media gateway control block (MGC) determines that the called subscriber is an asynchronous transmission mode subscriber accommodated in the asynchronous transmission mode interface module (AIM1) through number translation, and thus the signal asynchronous transmission mode harmony layer (SAAL4) of the media gateway module (MGM). The signal data is transmitted to the signal asynchronous transmission mode coordination layer SAAL2 of the asynchronous transmission mode interface module AIM2 through.

The signal asynchronous transmission mode coordination layer SAAL2 of the asynchronous transmission mode interface module AIM2 notifies that the call has been transmitted to the asynchronous transmission mode call control block ACC of the main processor MP.

In the asynchronous transmission mode call control block (ACC), once again, through the number translation, it is confirmed that the called subscriber is the asynchronous transmission mode subscriber of the asynchronous transmission mode interface module AIM1, and the signal asynchronous transmission mode of the asynchronous transmission mode interface module AIM1 is confirmed. The call arrives at the harmonic layer SAAL1.

That is, the subscriber call of the media gateway module MGM is transmitted to the asynchronous transmission mode interface module AIM1 through the asynchronous transmission mode interface module AIM2 and the switching module SFM.

On the other hand, when the subscriber connected to the asynchronous transmission mode interface module AIM1 makes a call to the low speed asynchronous transmission mode subscriber accommodated in the subscriber multiplex module AMM, the signal data sent by the subscriber is transmitted to the asynchronous transmission mode interface module AIM1. The signal is transmitted to the asynchronous transmission mode coordination layer SAAL1, and the signal asynchronous transmission mode coordination layer SAAL1 is transmitted to the asynchronous transmission mode call control block ACC of the main processor P.

The asynchronous transmission mode call control block (ACC) performs a call processing such as number translation to reach a low speed asynchronous transmission mode subscriber, and calls the asynchronous transmission mode coordination layer SAAL3 of the asynchronous transmission mode interface module AIM3. You make a request.

Therefore, the signal asynchronous transmission mode coordination layer SAAL3 of the asynchronous transmission mode interface module AIM3 transmits the incoming signal data to the signal asynchronous transmission coordination layer SAAL5 of the subscriber multiplex module AMM. The transport coordination layer SAAL5 transmits an incoming request to the subscriber multiplex control block (AMC) of the main processor MP.

Accordingly, in the subscriber multiplex control block (AMC), the subscriber multiplexing control block (AMC) makes a call request to the signal asynchronous transmission coordination layer (SAAL5) of the subscriber multiplex module (AMM) in order to receive a low-speed asynchronous transmission mode subscriber again through number translation. Initiate a data signal to a low speed subscriber accommodated in the flex module (AMM).

That is, the subscriber call of the asynchronous transmission mode interface module AIM1 is transmitted to the asynchronous transmission mode interface module AIM3 and the low speed subscriber multiplex module AMM through the switching module SFM.

As described above, the present invention provides a subscriber module and an interface module with a signal asynchronous transmission mode coordination module of a main processor which processes and maintains a call transmitted from a general subscriber, a low speed subscriber, or a high-speed subscriber from a relay during asynchronous transmission mode call processing. By distributing and installing in the main processor, distributed processing of calls centrally transmitted to the main processor can be prevented, and bottlenecks of concentrated calls can be prevented, and the signal asynchronous transmission mode matching module can transmit signal data transmitted to subscriber modules. Because only processing is possible, the amount of processing data and memory can be greatly reduced, thereby providing an effect of improving call processing capability.

Claims (4)

A media gateway module that accommodates subscribers that are not in asynchronous transmission mode; A subscriber multiplex module for accommodating an asynchronous transmission mode subscriber; An asynchronous transmission mode interface module for interfacing a call transmitted from the media gateway module and a subscriber multiplex module; A switching module for switching a call transmitted from the asynchronous transmission mode interface module; And a main processor configured to process and maintain a call that is switched and transmitted from the media gateway module, the subscriber multiplex module, and the asynchronous transmission mode interface module. The method of claim 1, wherein the media gateway module, the subscriber multiplex module, and the asynchronous transmission mode interface module comprise a signal asynchronous transmission mode harmonic layer for processing and transmitting the transmitted signal data to the main processor. Call processing enhancement system of asynchronous transfer mode switch. The signal asynchronous transmission mode harmony layer of the media gateway module and the signal asynchronous transmission mode harmony layer of the subscriber multiplex module are configured to be connected to the signal asynchronous transmission mode harmony layer of the asynchronous transmission mode interface module, respectively. A call processing enhancement system for an asynchronous transfer mode switch. The method of claim 1, wherein the main processor is configured to control translation of a call of the media gate control block and the signal asynchronous transmission mode harmony layer of the subscriber multiplex module. A subscriber multiplex control block; A call transfer enhancement system for an asynchronous transfer mode switch comprising asynchronous transfer mode interface call control block for translating and controlling the signals of the asynchronous transfer mode interface layer.