KR20020044729A - Interface device and method between channel card and if board in bts - Google Patents

Abstract

PURPOSE: An interworking apparatus and method between a channel card and an IF(Intermediate Frequency) board in a base station is provided to improve economic efficiency by embodying the interworking from a plurality of channel cards to the IF board using a high-speed serial point-to-point type and embodying the interworking from the IF board to a plurality of channel cards using a high-speed serial multi-drop type. CONSTITUTION: A plurality of channel cards(100) have the first serial data transmitter(101) for receiving parallel data from a modulator(1), converting the received parallel data into serial data, and transmitting the serial data through a point-to-point type, and the first serial data receiver(102) for receiving serial data with a multi-drop type, converting the received serial data into parallel data, and transmitting the parallel data to a demodulator(2). An IF board(200) comprises the second serial data transmitter(201) for receiving parallel data from a digital combiner and divider(3), converting the received parallel data into serial data, and transmitting the serial data to the first serial data receiver(102) through the multi-drop type, and the second serial data receiver(202) for receiving the serial data from the first serial data transmitter(101) through the point-to-point type, converting the received serial data into parallel data, and transmitting the parallel data to the digital combiner and divider(3).

Description

Matching device and method between channel card and base board in base station {INTERFACE DEVICE AND METHOD BETWEEN CHANNEL CARD AND IF BOARD IN BTS}

The present invention relates to a matching device and method between a channel card in a base station and an IF (Interface (hereinafter, referred to as "IF") board), and more particularly, from a plurality of channel cards to an IF board. Matching is realized by high-speed serial point-to-point method, while matching from IF board to multiple channel cards is implemented by high-speed serial multi-drop method. A device and method for matching between a card and an IF board.

Conventional IMT (International Mobile Telecommunication; IMT) -2000 Asynchronous base station channel card and IF board matching device uses a parallel bus or a high-speed serial bus to transfer high-speed data. Used.

However, when the matching between the channel card and the IF board in the conventional IMT-2000 asynchronous base station is implemented by using a parallel bus, the transmission signal line for parallel transmission is very much needed. There was a problem that the adverse effects of synchronization and mutual interference between the two, and the conventional matching technology using a high-speed serial bus can be implemented in the point-to-point transmission form, but there is a problem in the implementation of the multi-drop form.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to implement a channel in a base station for implementing a more economical and technically improved interface in implementing matching between a plurality of channel cards and IF boards. To provide a device and method for matching between a card and an IF board.

In order to achieve the above object, a matching device between a channel card and an IF board in a base station of the present invention receives a parallel data from a modulator, converts it into serial data, and then transmits the data through a point-to-point method; A plurality of channel cards each having a first serial data receiver for receiving a drop form of serial data and converting it into parallel data and transmitting the same to a demodulator;

A second serial data transmitter which receives parallel data from a digital combiner and a separator, converts the serial data into serial data, and transmits the serial data to a first serial data receiver in an arbitrary channel card of the plurality of channel cards through a multi-drop method; IF board receives a serial data from the first serial data transmitter in any channel card of the two channel card through the point-to-point method converts it to parallel data and transmits the second serial data receiver to the digital combiner and separator ;

A plurality of high-speed serial point-to-point buses each connecting a first serial data transmitter mounted in the plurality of channel cards and a second serial data receiver in the IF board in a point-to-point manner; And

And a high speed serial multi-drop bus for connecting a second serial data transmitter in the IF board and a first serial data receiver respectively mounted in the plurality of channel cards in a multi-drop manner.

In addition, the point-to-point transmission data transmission method of the channel card to the IF board in the matching method between the channel card in the base station and the IF board, the first serial data transmitter in any channel card outputs when the modulator polls the transmission clock An eleventh step of latching one parallel data at a rising time of a transmission clock;

A twelfth step of the first serial data transmitter converting the parallel data into serial data;

A thirteenth step, wherein the first serial data transmitter in the arbitrary channel card transmits the serial data to the second serial data receiver in the IF board via the high speed serial point-to-point bus at the time of the clock out (CLKOUT);

A fourteenth step of receiving, by the second serial data receiver in the IF board, the point-to-point serial data from the first serial data transmitter in the arbitrary channel card and converting the data into parallel data; And

And a fifteenth step in which the second serial data receiver transmits the parallel data to the digital combiner and separator at the polling time of the transmission clock.

On the other hand, the multi-drop transmission data transmission method from the IF board to the plurality of channel cards in the matching method between the channel card in the base station and the IF board, the second serial data transmitter in the IF board, the digital combination and the separator is the transmission clock A twenty-first step of latching parallel data output at a rising time at a polling time of a transmission clock;

A twenty-second step of the second serial data transmitter converting the parallel data into serial data;

A twenty-third step, wherein the second serial data transmitter transmits the serial data along with the address information of the corresponding channel card to the plurality of channel cards via a high speed serial multi-drop bus;

A twenty-fourth step of receiving serial data from a second serial data transmitter in the IF board by a first serial data receiver in an arbitrary channel card that matches address information among the plurality of channel cards and converting the serial data into parallel data; And

And a twenty-fifth step in which the first serial data receiver in the arbitrary channel card transmits the parallel data to the demodulator at the time of polling of the transmission clock.

1 is a functional block diagram showing a configuration of a matching device between an IMT-2000 asynchronous base station channel card and an IF board according to an embodiment of the present invention;

2 is an operation flowchart showing a point-to-point transmission data transmission method from a channel card to an IF board in a matching method between an IMT-2000 asynchronous base station channel card and an IF board according to an embodiment of the present invention;

3 is a view illustrating a phase relationship between point-to-point transmission data and a clock for explaining a method of transmitting point-to-point transmission data from a channel card to an IF board according to FIG. 2;

4 is an operation flowchart illustrating a multi-drop transmission data transmission method from an IF board to a plurality of channel cards in an IMT-2000 asynchronous base station channel card and IF board matching method according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating a phase relationship between multi-drop transmission data and a clock for explaining a multi-drop transmission data transmission method from an IF board to a channel card according to FIG. 4.

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

100: channel card 101: first serial data transmitter

102: first serial data receiver 200: IF board

201: second serial data transmitter 202: second serial data receiver

300: high speed serial point-to-point bus 400: high speed serial multi-drop bus

Hereinafter, a matching device and method between an IMT-2000 asynchronous base station channel card and an IF board 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 IMT-2000 asynchronous base station channel card and IF board matching device according to an embodiment of the present invention, IMT-2000 asynchronous base station channel card and IF board according to an embodiment of the present invention The inter-matching device includes a plurality of channel cards 100 each having a first serial data transmitter 101 and a first serial data receiver 102; An IF board 200 having a second serial data transmitter 201 and a second serial data receiver 202; High speed serial point-to-point bus 300; And a high speed serial multi-drop bus 400.

When the first serial data transmitter 101 mounted in the plurality of channel cards 100 receives parallel data from the modulator 1, the first serial data transmitter 101 converts the serial data into serial data and then converts the serial data into the serial data through the high speed serial point-to-point bus 300. It serves to transmit to the second serial data receiver 202 in the IF board 200, and can be implemented using National's "DS90CR285 chip".

In addition, the first serial data receiver 102 mounted in each of the plurality of channel cards 100 may transmit address information and serial data from the second serial data transmitter 201 in the IF board 200. When the data is transmitted through the serial multi-drop bus 400, it is checked whether the address information corresponds to its own address. If the address corresponds to its own address, the serial data is received, converted into parallel data, and then transmitted to the demodulator 2. It can be implemented using National's "DS92LV1210 chip".

On the other hand, when the second serial data transmitter 201 mounted in the IF board 200 receives parallel data from the digital combiner and separator 3, the second serial data transmitter 201 converts the serial data into serial data and then converts the high speed serial multi-drop bus 400. It transmits to the first serial data receiver 101 in any channel card 100 of the plurality of channel cards 100, and can be implemented using National's "DS92LV1021 chip".

In addition, a second serial data receiver 202 mounted in the IF board 200 is connected to the high speed serial point at the first serial data transmitter 102 in any channel card 100 of the plurality of channel cards 100. When serial data is transmitted through the dot bus 300, it receives and converts the data into parallel data and transmits the data to the digital combiner and separator 3, which can be implemented using National's "DS90CR286 chip". Do.

Meanwhile, the high speed serial point-to-point bus 300 respectively connects the first serial data transmitter 101 mounted in the plurality of channel cards 100 and the second serial data receiver 202 in the IF board 200, respectively. A bus that connects in a point-to-point fashion.

In addition, the high speed serial multi-drop bus 400 may include a second serial data transmitter 201 in the IF board 200 and a first serial data receiver 102 mounted in the plurality of channel cards 100, respectively. A bus that connects in a multi-drop fashion.

Next, a description will be given of a matching method between an IMT-2000 asynchronous base station channel card and an IF board according to an embodiment of the present invention using an IMT-2000 asynchronous base station channel card and an IF board matching device. Shall be.

First, referring to FIGS. 2 and 3 for a method of transmitting point-to-point transmission data from a channel card to an IF board in a matching method between an IMT-2000 asynchronous base station channel card and an IF board according to an embodiment of the present invention. Let's explain.

Initially, the first serial data transmitter 101 in any channel card 100 is the time when the modulator 1 polls the transmit clock Chip * 8, as shown in FIG. When the parallel data is output from the latch, it is latched at the rising time of the transmission clock Chip * 8 (S11).

Then, the first serial data transmitter 101 converts the parallel data into serial data (S12).

Subsequently, the first serial data transmitter 101 in the arbitrary channel card 100 transmits the serial data to the high speed serial point-to-point at the polling time of the clock out CLKOUT, as shown in FIG. It transmits to the second serial data receiver 202 in the IF board 200 through the bus 300 (S13).

Then, the second serial data receiver 202 in the IF board 200 receives the point-to-point serial data from the first serial data transmitter 101 in the arbitrary channel card 100 and converts it into parallel data ( S14).

Then, the second serial data receiver 202 transmits the parallel data to the digital combiner and separator 3 at the polling time of the transmit clock Chip * 8, as shown in FIG. (S15).

Subsequently, the digital combiner and separator 3 latches parallel data burned down by the second serial data receiver 202 at the rising time of the transmission clock Chip * 8, as shown in FIG. do.

Meanwhile, in the following, a multi-drop transmission data transmission method from an IF board to a plurality of channel cards among the IMT-2000 asynchronous base station channel card and IF board matching method according to an embodiment of the present invention is shown in FIGS. 4 and 5. This will be described with reference to.

First, as shown in (a) of FIG. 5, the second serial data transmitter 201 in the IF board 200 has the digital combiner and separator 3 at the rising point of the transmission clock Chip * 8. When parallel data is output, it is latched at the polling time point of the transmission clock Chip * 8 (S21).

Thereafter, the second serial data transmitter 201 converts the parallel data into serial data (S22).

Subsequently, as shown in FIG. 5 (b), the second serial data transmitter 201 is connected with the address information of the corresponding channel card 100 to which the channel card 100 is currently transmitted. Serial data is transmitted to the plurality of channel cards 100 through the high speed serial multi-drop bus 400 (S23).

Then, the first serial data receiver 102 in any channel card 100 that matches the address information among the plurality of channel cards 100 is multiplied from the second serial data transmitter 201 in the IF board 200. -After receiving the serial data in the form of a drop and converts to parallel data (S24).

Thereafter, the first serial data receiver 102 in the arbitrary channel card 100 transmits the parallel data to the demodulator at the polling time of the transmit clock Chip * 8, as shown in FIG. Transfer to (2) (S25).

Then, the demodulator 2 latches parallel data output from the first serial data receiver 102 at the rising time of the transmission clock Chip * 8, as shown in FIG.

As described above, according to the matching device and method between the channel card and the IF board in the base station according to the present invention, the matching from the plurality of channel cards to the IF board is implemented in a high-speed serial point-to-point method, while the plurality of channels in the IF board Card-to-card matching is a high-speed serial multi-drop approach that not only improves economics over conventional parallel buses, but also technically eliminates the adverse effects of synchronization and mutual interference.

Claims (3)

A first serial data transmitter for receiving parallel data from a modulator and converting the serial data into a serial data point, and then transmitting the data through a point-to-point method; A plurality of channel cards each having a serial data receiver; A second serial data transmitter which receives parallel data from a digital combiner and a separator, converts the serial data into serial data, and transmits the serial data to a first serial data receiver in an arbitrary channel card of the plurality of channel cards through a multi-drop method; IF board receives a serial data from the first serial data transmitter in any channel card of the two channel card through the point-to-point method converts it to parallel data and transmits the second serial data receiver to the digital combiner and separator ; A plurality of high-speed serial point-to-point buses each connecting a first serial data transmitter mounted in the plurality of channel cards and a second serial data receiver in the IF board in a point-to-point manner; And A high speed serial multi-drop bus for connecting a second serial data transmitter in the IF board and a first serial data receiver respectively mounted in the plurality of channel cards in a multi-drop manner. Board-to-Board Matching Device. An eleventh step of latching, by the first serial data transmitter in any channel card, the parallel data output by the modulator at the polling time of the transmission clock at the rising time of the transmission clock; A twelfth step of the first serial data transmitter converting the parallel data into serial data; A thirteenth step, wherein the first serial data transmitter in the arbitrary channel card transmits the serial data to a second serial data receiver in the IF board via a high speed serial point-to-point bus at the time of the clock out (CLKOUT); A fourteenth step of receiving, by the second serial data receiver in the IF board, the point-to-point serial data from the first serial data transmitter in the arbitrary channel card and converting the data into parallel data; And And a fifteenth step in which the second serial data receiver transmits the parallel data to the digital combiner and separator at the time of polling of the transmission clock. A twenty-first step of latching, by the second serial data transmitter in the IF board, the parallel data output by the digital combiner and separator at the rising time of the transmission clock at the timing of the transmission clock; A twenty-second step of the second serial data transmitter converting the parallel data into serial data; A twenty-third step, wherein the second serial data transmitter transmits the serial data along with the address information of the corresponding channel card to the plurality of channel cards via a high speed serial multi-drop bus; A twenty-fourth step of receiving serial data from a second serial data transmitter in the IF board by a first serial data receiver in an arbitrary channel card that matches address information among the plurality of channel cards and converting the serial data into parallel data; And And a twenty-fifth step in which the first serial data receiver in the arbitrary channel card transmits the parallel data to the demodulator at the polling time of the transmission clock.