KR20000043472A - Multiple serial communication apparatus - Google Patents

Abstract

PURPOSE: A multiple serial communication apparatus is provided to be easy to diagnose a system state regardless of a system position by using a serial communication and an infrared ray communication in common. CONSTITUTION: A multiple serial communication apparatus comprises a communication control module(10), an RS232 driver and receiver(20), an infrared ray transceiver(30), a receiver(40), a transceiver(50), a recognition and connection part(60), a control signal part(70) and a select part(80). The communication control module(10) has an UART port(11) and a port input/output(PIO)(12), and supports an RS232 communication and an infrared ray communication. The RS232 driver and receiver(20) processes an RS232 transmission/reception signal. The infrared ray transceiver(30) controls a transmission and reception of an infrared ray signal. The recognition and connection part(60) connects an RS 232 signal through a cable, and outputs a control signal for recognizing whether any communication mode is executed at the PIO(12). The control signal part(70) transfers a control signal from the recognition and connection part(60) into the PIO(12), and the select part(80) enables and disables the infrared ray transceiver(30) according to the control signal from the PIO(12), and selects an infrared ray communication or an RS232 communication.

Description

Multiple Serial Communication Device of Control Board for Mobile Communication System

The present invention is a control board for a mobile communication system, using a UART (Universal Asynchronous Receiver Transmitter) port of the embedded processor jointly by RS232 communication and infrared (Infrared) communication and automatically recognizes when debugging (Debugging) or operation selectively The present invention relates to a multi-serial communication device of a control board for use in a mobile communication system.

In general, a mobile communication system including a mobile station, a base station, a control station, and a switching station includes a control board for performing a status diagnosis to a base station, a control station, and a switching station to diagnose a system of each country.

As described above, the control boards for the conventional mobile communication system provided in the base station, the control station, and the exchange station use the UART port of the embedded processor for RS232 communication during debugging or operation.

That is, the operator side can perform the status diagnosis for the base station through the RS232 communication with the control board in the base station.

However, since RS232 communication is a wired connection by cable connection, it is difficult to diagnose the state of the base station because the cable connection to the base station is difficult in a system located in a place where distance is not easily accessible, such as a micro base station or a small base station. There was a hard problem.

In addition, there is always an inconvenience and cumbersome disadvantages to be provided with a separate cable.

The present invention has been made to solve the above problems, the purpose is to jointly use the UART port of the embedded processor in the control board for mobile communication system with RS232 communication and infrared communication, and automatically recognize this when debugging or operating optional The present invention provides a multi-serial communication device of a control board for a mobile communication system that enables easy diagnosis of the system status regardless of the position of the system (base station, control station, switching station).

1 is a block diagram of a multiple serial communication device of a control board for a mobile communication system according to the present invention;

Figure 2 is a signal flow diagram showing the operation of the multiple serial communication apparatus according to the present invention.

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

10: communication control module unit 11: UART port

12: PIO 20: RS-232 Driver and Receiver

30: infrared transceiver 40: receiver

50: transmitter 60: recognition and connection

70: control signal unit 80: selection unit

In order to achieve the above object, the multiple serial communication apparatus of the control board for a mobile communication system of the present invention outputs a control signal of a row to the PIO of the communication control module when it is recognized as RS232 communication according to a cable connection state, and then Disable the infrared transceiver through the control of the selector to perform RS232 communication with the operator by using the UART port of the communication control module part for RS232 communication. And then enable the infrared transceiver through the control of the selector to perform infrared communication with the operator by using the UART port of the communication control module for infrared communication.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the multiple serial communication device of the control board for a mobile communication system according to the present invention.

1 is a block diagram of a multi-serial communication apparatus of a control board for a mobile communication system according to the present invention, a UART port 11 performing asynchronous communication and a PIO (Port Input / Input) for processing control signals and input / output signals. And a control module unit 10 for supporting RS232 communication and infrared communication by supporting a protocol for RS232 communication and infrared communication, an RS232 driver for processing RS232 transmission / reception signals, and A receiver 20, an infrared transceiver 30 that controls the transmission / reception of infrared signals, and a pin diode and a photo diode, respectively, to transmit / receive infrared signals. Connect a signal for RS232 through a cable and a receiver 40 and a transmitter 50 which process reception, and according to the connection state, what communication mode is in the PIO 12 in the communication control module unit 10 according to the connection state. To automatically recognize Recognition and connection unit 60 for outputting a control signal, the control signal unit 70 for connecting the control signal output from the recognition and connection unit 60 to the PIO 12 in the communication control module unit 10, The infrared transceiver 30 is enabled or disabled in accordance with a control signal output from the PIO 12 in the communication control module 10, and is configured to select an infrared communication or RS232 communication.

The operation of the multiple serial communication apparatus of the control board for mobile communication system according to the present invention configured as described above will be described with reference to the flowchart of FIG.

Multiple serial communication apparatus of the control board for a mobile communication system of the present invention configured as shown in Figure 1 is applicable to all of the base station, the control station and the switching station of the mobile communication system, especially the micro base station located in an easily accessible place Applicable to and small base stations.

First, when the multiple serial communication device of the control board is powered on and starts to operate (S1), the UART port 11 in the communication control module unit 10 is initialized by infrared communication (S2).

Then, the PIO 12 in the communication control module unit 10 receives a high level control signal from the recognition and connection unit 60 through the control signal unit 70 and outputs it to the selection unit 80. The selector 80 outputs a control signal to the infrared transceiver 30 to enable the infrared transceiver 30 (S3).

Accordingly, the multiple serial communication device of the control board performs infrared communication with the operator side through the receiver 40 and the transmitter 50 (S4).

On the other hand, when the control signal output from the PIO 12 is monitored, if the high level control signal is continuously output, the infrared communication is maintained as it is, but if the change occurs in the control signal with the low level control signal, the interrupt processing routine is executed. It is performed (S5, S6).

That is, the interrupt processing routine detects the state of the infrared transceiver 30 through the PIO 12. If the state of the infrared transceiver 30 is not an enabled state, the process proceeds to step S2 and the following process is performed. On the other hand, in the enabled state, the low level control signal output from the PIO 12 is output to the infrared transceiver 30 to disable the infrared transceiver 30 (S8, S9).

Then, the UART port 11 is initialized to RS232 communication to perform RS232 communication by connecting to the operator side through the RS232 driver and the receiver 20 and the recognition and connection unit 60.

In the present invention as described above, in the case of non-RS232 communication according to the connection state of the cable in the recognition and connection unit 60, the UART port 11 of the communication control module unit 10 to initialize the infrared communication and PIO 12 By controlling the selector 80 to enable the infrared transceiver 30 to communicate with the operator in the infrared communication to monitor the PIO 12 while performing a status diagnosis function to monitor whether the control signal is input or PIO (12) ) Continue to watch for interrupts.

On the other hand, in the case of RS232 communication, the communication control module unit 10 initializes the UART 11 to RS232 communication as soon as an interrupt or a state change is detected in the PIO 12, and selects 80 through the PIO 12. By controlling, the infrared transceiver 30 is disabled and RS232 communication is performed with the operator while waiting for a state change input through the PIO 12.

In particular, the connection and recognition unit 60 outputs a low signal level to the PIO 12 through the control signal unit 70 when using RS232 communication, and when not using RS232 communication, that is, using infrared communication. In this case, a high signal level is output to the PIO 12 through the control signal unit 70.

Then, the selector 80 selects RS232 communication or infrared communication according to the control signal input through the PIO 12.

As described above, the present invention provides easy access to the UART port used in the control board for the mobile communication system by using the RS232 serial communication and infrared communication and automatically recognizing and selectively using the UART port. Even if it is impossible, it is possible to diagnose the status of the base station by infrared communication.

Claims (1)

A communication control module having a UART port 11 performing asynchronous communication and a PIO 12 processing a control signal and an input / output signal, and supporting a protocol for RS232 communication and infrared communication to support RS232 communication and infrared communication. A unit 10, an RS232 driver and receiver 20 for processing RS232 transmission / reception signals, an infrared transceiver 30 for controlling transmission / reception of infrared signals, and a pin diode and a photo light emitting diode, respectively. A communication mode in the PIO 12 in the communication control module unit 10 is connected to the receiver 40 and the transmitter 50 which process the transmission / reception of signals and a signal for RS232 via a cable and according to the connection state. Recognition and connection unit 60 for outputting a control signal to automatically recognize the recognition, connecting the control signal output from the recognition and connection unit 60 to the PIO 12 in the communication control module unit 10 My Selection unit for selecting infrared communication or RS232 communication by enabling or disabling the infrared transceiver 30 according to the control signal output from the PIO 12 in the communication signal module 70 and the communication control module unit 10. Multiple serial communication device of the control board for mobile communication system, characterized in that consisting of (80).