KR20020055233A - Device for interfaceing in bts system using ima - Google Patents

Abstract

The present invention allows to improve the efficiency of the relay transmission line between the control station and the base station by assigning a plurality of E1 / T1 links between the interface device in the base station system, more specifically, the control station and the base station using the IMA to the IMA group. The present invention relates to an interface device in a base station system using IMA, and according to the interface device in a base station system using IMA according to the present invention, not only ensures the efficiency of the relay transmission line between the control station and the base station, but also By increasing the number, the bottleneck of traffic and the quality of service (Qos) are guaranteed to provide users with higher quality communication services.

Description

Interface device in base station system using IMA {DEVICE FOR INTERFACEING IN BTS SYSTEM USING IMA}

The present invention relates to an interface device in a base station system using Inverse Multiplexing for ATM (IMA). More particularly, the present invention relates to a control station by assigning a plurality of E1 / T1 links between a control station and a base station to an IMA group. And an interface device in a base station system using IMA which makes it possible to improve the efficiency of the relay transmission line between base stations.

As is well known, in the current mobile communication system, as the base station call processing capacity is increased, the transmission line of the E1 / T1 between the control station and the base station is also increased, thereby requiring efficient management of the transmission line.

In the conventional mobile communication system, the transmission line between the control station and the base station is configured to calculate the call processing capacity of the base station and to expand the corresponding E1 link, and to handle the operation and management thereof in the application program of the base station. The method was used.

However, in the case of operating and managing the transmission line between the control station and the base station using the conventional method as described above, when the failure occurs in the transmission line, the base station does not exclude the failed transmission line while detecting the failure. A typical problem that affects the transfer of call-processing traffic to multiple E1 links is that the call-processing application specifies the E1 link to which actual traffic will be sent during call setup, so that if the E1 link to which the traffic fails, There was a problem that the sound quality degradation and call service is disconnected.

Accordingly, the present invention has been made to solve the conventional problems as described above, and an object of the present invention is to allocate a plurality of E1 / T1 link to the IMA group to improve the efficiency of the transmission line to prevent traffic bottlenecks and service The purpose of the present invention is to provide an interface device in a base station system using IMA to provide higher quality communication service to users by guaranteeing quality (Qos).

In order to achieve the above object, an interface device in a base station system using IMA according to the present invention outputs ATM cell data while receiving ATM cell data through a plurality of E1 lines belonging to an IMA group, and inputs ATM cell data. An E1 / T1 line interface board that outputs the ATM cell data through a plurality of E1 lines belonging to an IMA group when received;

Upon receipt of each ATM cell data from the E1 / T1 line interface board, the ATM cell data is collected and output, while upon receipt of ATM cell data, the ATM cell data is distributed to the E1 / T1 line interface board and then output. An E1 / T1 framer portion;

When the ATM cell data is input from the E1 / T1 framer unit in a round robin manner, the ATM cell data is output. When the ATM cell data is received, the ATM cell data is output to the E1 / T1 framer unit through a round robin scheme. IMA part;

When the ATM cell data is input from the IMA unit, the ATM cell data is converted into AAL2 type ATM cell data and output. On the other hand, when the AAL2 type ATM cell data is input, the ATM cell data is converted into ATM cell data. An AAL2 type conversion unit for outputting negatively;

When the AAL2 type ATM cell data is input from the AAL2 type converter, the AAL2 type ATM cell data is muxed and output, while the AAL2 type ATM cell data is demuxed and output after the mux / demux unit outputs the data. ;

An ATM layer / backplane interface unit that outputs the ATM cell data when receiving the ATM cell data from the mux / demux unit, and outputs the ATM cell data to the mux / demux unit when receiving the ATM cell data; And

The board processor performs various control functions of the E1 / T1 line interface board, the E1 / T1 framer unit, the IMA unit, the AAL2 type conversion unit, the mux / demux unit, and the ATM layer / backplane interface unit.

1 is a functional block diagram showing the configuration of an interface device in a base station system using an IMA according to an embodiment of the present invention;

FIG. 2 is a functional block diagram showing in detail the configuration of the E1 / T1 line interface board among the interface devices in the base station system using the IMA of FIG.

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

100: E1 / T1 line interface board 101: 1st E1 / T1 line interface

102: second E1 / T1 line interface 200: E1 / T1 framer portion

300: IMA unit 400: AAL2 type conversion unit

500: mux / demux unit 600: ATM layer / backplane interface unit

700: Board Processor

Hereinafter, an interface device in a base station system using an IMA according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a functional block diagram of an interface device in a base station system using an IMA according to an embodiment of the present invention. The interface device in a base station system using an IMA according to an embodiment of the present invention is an E1 / T1 line interface board 100. ); An E1 / T1 framer portion 200; IMA unit 300; An AAL2 type conversion unit 400; Mux / demux portion 500; ATM (Asynchronous Transfer Mode) (hereinafter, referred to as ATM) layer / backplane interface unit 600; And a board processor 700.

When the E1 / T1 line interface board 100 receives ATM cell data through a plurality of E1 lines belonging to an IMA group, the E1 / T1 line interface board 100 outputs the ATM cell data to the E1 / T1 framer unit 200. When receiving ATM cell data from the framer unit 200, the ATM cell data is output through the plurality of E1 lines belonging to the IMA group.

In this case, as illustrated in FIG. 2, the E1 / T1 line interface board 100 includes a first E1 / T1 line interface 101 and a second E1 / T1 line interface 102.

The first E1 / T1 line interface 101 mounted in the E1 / T1 line interface board 100 receives ATM cell data through a 4E1 line belonging to an IMA group, and transmits the ATM cell data to the E1 / T1 framer unit. On the other hand, when the ATM cell data is input from the E1 / T1 framer unit 200, the ATM cell data is output through 4E1 belonging to the IMA group.

In addition, when the second E1 / T1 line interface 102 mounted in the E1 / T1 line interface board 100 receives ATM cell data through a 4E1 line belonging to an IMA group, the second E1 / T1 line interface 102 receives the ATM cell data from the E1 / T1 framer. On the other hand, when the ATM cell data is received from the E1 / T1 framer unit 200, the ATM cell data is output through 4E1 belonging to the IMA group.

Meanwhile, the E1 / T1 framer unit 200 may be configured from the first E1 / T1 line interface 101 and the second E1 / T1 line interface 102 mounted in the E1 / T1 line interface board 100. Upon receipt of ATM cell data, the respective ATM cell data is collected and output to the IMA unit 300. On the other hand, when ATM cell data is received from the IMA unit 300, the ATM cell data is distributed and then E1. It serves to output to the first E1 / T1 line interface 101 and the second E1 / T1 line interface 102 mounted in the / T1 line interface board 100.

When the IMA unit 300 receives ATM cell data from the E1 / T1 framer unit 200 in a round-robin manner, the IMA unit 300 outputs the ATM cell data to the AAL2 type conversion unit 400. When the ATM cell data is input from the AAL2 type converter 400, the ATM cell data is output to the E1 / T1 framer 200 through a round robin method.

Meanwhile, when the AAL2 type conversion unit 400 receives ATM cell data from the IMA unit 300, the AAL2 type conversion unit 400 converts the ATM cell data into AAL2 type ATM cell data and outputs the ATM cell data to the mux / demux unit 500. On the other hand, when the AAL2 type ATM cell data is received from the mux / demux unit 500, the data is converted into ATM cell data and then output to the IMA unit 300.

When the mux / demux unit 500 receives AAL2 type ATM cell data from the AAL2 type conversion unit 400, the mux / demux unit 500 muxes the data and outputs the same to the ATM layer / backplane interface unit 600. When AAL2 type ATM cell data is input from the ATM layer / backplane interface unit 600, the AAL2 type converting unit 400 outputs the AAL2 type converter 400 after demuxing the data.

Meanwhile, when the ATM layer / backplane interface unit 600 receives ATM cell data from the mux / demux unit 500, the ATM layer / backplane interface unit 600 outputs the ATM cell data to the upper end of the base station, and the ATM cell from the upper end of the base station. Upon receiving the data, the ATM cell data is output to the mux / demux unit 500.

The board processor 700 includes the E1 / T1 line interface board 100, the E1 / T1 framer unit 200, the IMA unit 300, the AAL2 type conversion unit 400, and the mux / demux unit 500. And various control functions of the ATM layer / backplane interface unit 600.

Next, the interface device in the base station system using the IAM having the above configuration will be described.

First, the first E1 / T1 line interface 101 mounted in the E1 / T1 line interface board 100 receives ATM cell data through a 4E1 line belonging to an IMA group and simultaneously transmits the ATM cell data to the E1 / T1 line interface board 100. Output to the T1 framer unit 200.

In addition, when the second E1 / T1 line interface 102 mounted in the E1 / T1 line interface board 100 receives ATM cell data through a 4E1 line belonging to an IMA group, the second E1 / T1 line interface 102 receives the ATM cell data from the E1 / T1 framer. Output to the unit 200.

Then, the E1 / T1 framer unit 200 receives respective ATM cell data from the first E1 / T1 line interface 101 and the second E1 / T1 line interface 102, and at the same time, each ATM cell is received. The data is collected and output to the IMA unit 300.

Subsequently, the IMA unit 300 receives ATM cell data from the E1 / T1 framer unit 200 in a round robin manner and simultaneously sends the ATM cell data to the AAL2 type converter 400. Output

Thereafter, the AAL2 type conversion unit 400 receives ATM cell data from the IMA unit 300 and simultaneously converts the ATM cell data into AAL2 type ATM cell data, and then the mux / demux unit 500. )

Then, the MUX / demux unit 500 receives AAL2 type ATM cell data from the AAL2 type conversion unit 400 and muxes the data to the ATM layer / backplane interface unit 600. Output

Subsequently, the ATM layer / backplane interface unit 600 receives ATM cell data from the mux / demux unit 500 and outputs the ATM cell data to the upper end of the base station.

Meanwhile, a description will be given of an upstream operation process for an interface device in a base station system using an IMA according to the present invention.

First, the ATM layer / backplane interface unit 600 receives AAL2 type ATM cell data from an upper end of a base station and outputs the ATM cell data to the mux / demux unit 500.

Then, the MUX / demux unit 500 receives AAL2 type ATM cell data from the ATM layer / backplane interface unit 600 and simultaneously demuxes the ATM cell data and then performs the AAL2 type conversion unit ( 400).

The AAL2 type conversion unit 400 receives AAL2 type ATM cell data from the mux / demux unit 500, converts the data into ATM cell data, and outputs the AAL2 type ATM cell data to the IMA unit 300.

The IMA unit 300 receives ATM cell data from the AAL2 type converter 400 and outputs the ATM cell data to the E1 / T1 framer 200 through a round robin method.

The E1 / T1 framer unit 200 receives the ATM cell data from the IMA unit 300 and simultaneously distributes the ATM cell data. The E1 / T1 framer unit 200 includes a first E1 / T1 mounted in the E1 / T1 line interface board 100. Output to the T1 line interface 101 and the second E1 / T1 line interface 102.

The first E1 / T1 line interface 101 and the second E1 / T1 line interface 102 mounted in the E1 / T1 line interface board 100 respectively receive ATM cell data from the E1 / T1 framer unit 200. Upon receipt of the data, each ATM cell data is output to the control station via each 4E1 belonging to the IMA group.

As described above, according to the interface device in the base station system using IMA according to the present invention, it is possible to improve the efficiency of the relay transmission line between the control station and the base station by allocating a plurality of E1 / T1 links between the control station and the base station to the IMA group. In addition to ensuring maximum efficiency of the relay transmission line between the control station and the base station, the transmission line can be increased, thereby preventing traffic bottlenecks and ensuring quality of service (Qos). There is an outstanding effect that it can provide a higher quality communication service.

In addition, the IMA Group feature allows multiple E1 links to be used as a single line, providing increased access speeds that integrate voice and video as well as data using expanded bandwidth. In the event of a failure of an E1 link in the network, it is possible to quickly exclude only the failed line and provide continuous communication service without degrading sound quality and disconnection.

Claims (2)

E1 outputs ATM cell data when receiving ATM cell data through a plurality of E1 lines belonging to an IMA group, and E1 outputs ATM cell data through a plurality of E1 lines belonging to an IMA group when receiving ATM cell data. / T1 line interface board; Upon receipt of each ATM cell data from the E1 / T1 line interface board, the ATM cell data is collected and output, while upon receipt of ATM cell data, the ATM cell data is distributed to the E1 / T1 line interface board and then output. An E1 / T1 framer portion; When the ATM cell data is input from the E1 / T1 framer unit in a round robin manner, the ATM cell data is output. When the ATM cell data is received, the ATM cell data is output to the E1 / T1 framer unit through a round robin scheme. IMA part; When the ATM cell data is input from the IMA unit, the ATM cell data is converted into AAL2 type ATM cell data and output. On the other hand, when the AAL2 type ATM cell data is input, the ATM cell data is converted into ATM cell data. An AAL2 type conversion unit for outputting negatively; When the AAL2 type ATM cell data is input from the AAL2 type converter, the AAL2 type ATM cell data is muxed and output, while the AAL2 type ATM cell data is demuxed and output after the mux / demux unit outputs the data. ; An ATM layer / backplane interface unit that outputs the ATM cell data when receiving the ATM cell data from the mux / demux unit, and outputs the ATM cell data to the mux / demux unit when receiving the ATM cell data; And An IAM comprising a board processor for performing various control functions of the E1 / T1 line interface board, the E1 / T1 framer unit, the IMA unit, the AAL2 type conversion unit, the mux / demux unit, and the ATM layer / backplane interface unit. Interface device in a base station system using a. The method of claim 1, When the E1 / T1 line interface board receives ATM cell data through the 4E1 line belonging to the IMA group, the E1 / T1 line interface board outputs the ATM cell data to the E1 / T1 framer unit, and inputs the ATM cell data from the E1 / T1 framer unit. A first E1 / T1 line interface for outputting the ATM cell data through 4E1 belonging to the IMA group upon receipt; And When ATM cell data is received through the 4E1 line belonging to the IMA group, the ATM cell data is outputted to the E1 / T1 framer unit. When ATM cell data is received from the E1 / T1 framer unit, the ATM cell data is transmitted to the IMA group. An interface device in a base station system using an IAM, characterized in that the second E1 / T1 line interface for output through each belonging 4E1.