KR100241897B1 - Data transmitting and receiving apparatus and method for wireless multi-terminal - Google Patents

Abstract

The data transmitting / receiving method of a composite terminal device comprising a wireless telephone unit and a PD unit performing a small computer function omits a CAL code in transmission mode, formats the data into HDLC, and transmits the data in an asynchronous communication method. In the mode, the RCD code reproduction and error detection process is omitted from the data of the HCD format received in the asynchronous manner, and the received data is immediately processed.

Description

Apparatus and method for transmitting / receiving data of composite wireless terminal

The present invention relates to a data transmission and reception apparatus and method of a composite wireless terminal, and more particularly, to a data transmission and reception apparatus and method between a wireless telephone unit and a PD unit.

FIG. 1 is a diagram showing the configuration of a composite wireless terminal, and is generally composed of a wireless telephone unit and a personal data assistant (hereinafter referred to as a PDA unit).

First, referring to the configuration of the wireless telephone unit, the second control unit 211 controls the overall operation of the wireless telephone unit and controls the data communication function with the control unit of the PDA unit. The program memory 212 stores a program for controlling the overall operation of the radio telephone. The program memory 212 may use a flash memory. The data memory 213 temporarily stores data generated during the operation of the radio telephone. The data memory 213 may use a random access memory (RAM). The nonvolatile memory 214 stores telephone numbers and system parameters registered to perform functions such as short dialing. The nonvolatile memory 214 may use an EEPROM. A key pad 215 generates a command key signal for controlling the operation of the second controller 211 and a key signal for data input. The display unit 216 performs the function of displaying the state information generated during the operation of the radio telephone under the control of the second controller 211. The display unit 216 may use a liquid crystal display (LCD).

The communication system of the radiotelephone unit includes a radio frequency unit (RF) 217, a frequency conversion unit 218, a modulation / demodulation part 219, a signal processing part 220, and the like. The operation is controlled by the second control unit 211. The signal processor 220 includes an encoder, an decoder, a decoder, a vocoder, a PCM codec, and the like.

Here, it is clear that the configuration of the communication system does not separately illustrate the configuration of the transmitter and the receiver. In FIG. 1, the control line of the second control unit 211 is omitted, and a circuit and a handset for processing a voice signal are omitted.

In the transmission mode, the signal processing unit 220 encodes the transmission data, the modulation / demodulation unit 219 modulates the encoded transmission data into a transmission form, and the frequency conversion unit 218 up-converts the modulated transmission signal to a transmission band. The RF unit 217 band-passes and power-amplifies the up-converted transmission RF signal into a transmission band and then propagates to the air through the antenna. In addition, in the reception mode, the RF unit 217 filters the weak RF signal received by the antenna into low noise amplification and reception bands, and outputs the frequency converter 218. The frequency converter converts the received RF signal to baseband in frequency down conversion. The demodulation unit 219 demodulates the down-converted received signal modulated by the transmitter, and the signal processor 220 decodes the modulated received signal into an original signal and outputs the original signal.

Secondly, the configuration of the PDA unit, the first control unit (1st Central Processing Unit) 111 controls the overall operation of the PDA unit, and controls the data communication function with the second control unit 211 of the wireless telephone unit. The program memory 112 stores a program for controlling the overall operation of the PDA. The program memory 112 may use a flash memory. The data memory 113 temporarily stores data generated during operation of the PDA unit under the control of the first controller 111. The data memory 113 may use a random access memory (RAM). The nonvolatile memory 114 stores information registered in the PDA unit and information input by data communication with the wireless telephone unit. The nonvolatile memory 114 may use an EEPROM. A key pad 115 generates a command key signal for controlling the operation of the first controller 111 and a key signal for data input. The display unit 116 performs a function of displaying status information generated during PDA operation under the control of the first controller 111. The display unit 116 may use a liquid crystal display (LCD). The communication unit 117 functions to form a data communication path when interfacing data between the PDA unit and an external device. The communication unit 117 may be configured as a UART.

In the hybrid wireless terminal, the wireless telephone unit may be a CDMA terminal, and the PDA unit may be a small computer (HPC).

As shown in FIG. 1, the composite wireless terminal has a configuration in which a PDA unit and a wireless telephone unit are combined. At this time, the first control unit 111 of the PDA unit and the second control unit 211 of the wireless telephone unit is asynchronous communication method through the port of the Universal Asynchronous Receiver Transmitter (UART) 150. In this case, the format of the transmitted message is HDLC (High level Data Link Control), and the transmission rate is 57.6 Kbps. The UART150 is an asynchronous transmission and reception device capable of serial to parallel conversion and parallel to serial conversion used for data transmission. By this combination, the user interface data corresponding to the wireless telephone unit is graphically processed in the PDA unit.

As described above, in order to share data between the wireless telephone unit and the PDA unit in the composite wireless terminal, data is transmitted and received using an Async symplified HDLC format. At this time, CRC16 / 30 is used to detect data errors. As described above, the CRC code is used when reliability is not secured during data communication of devices that are separated by a certain distance. However, the composite wireless terminal has an interface configuration in which a wireless telephone unit and a PDA unit are located close to each other like a board so that an error is not detected when transmitting or receiving data. However, when performing data communication between the first control unit 111 and the second control unit 211 in the hybrid wireless terminal, the communication is performed in the HDLC format in which the CRC code is inserted, so that the load of the control units 111 and 211 is increased, thereby processing time only. There was an increasing problem.

Accordingly, an object of the present invention is to provide an apparatus and method for rapidly processing data by omitting an error detection code during message communication for data sharing between a wireless telephone unit and a PDA unit in a complex wireless terminal.

It is another object of the present invention to set a CRC non-employment mode in data communication between a wireless telephone unit and a PDA unit in a complex wireless terminal, a CRC employment mode in a communication mode with an external device, and a CRC code according to a set CRC mode in data communication. An apparatus and method for adding / playing data or transmitting / receiving data without a CRC code are provided.

In order to achieve the above object, according to an embodiment of the present invention, a data transmission / reception method of a composite terminal device including a wireless telephone unit and a PD unit performing a small computer function is omitted. Format the data in a format and transmit it in an asynchronous communication method, and in the receive mode, skips the process of regenerating the RC code and detects an error in the data of the HCD format received in the asynchronous manner, and processes the received data immediately. .

1 is a diagram illustrating a configuration of a composite wireless terminal.

2 is a flow chart illustrating a process of setting up a configuration in accordance with an embodiment of the present invention;

3 illustrates a configuration information element according to an embodiment of the invention.

FIG. 4 is a flowchart illustrating a process of processing data received after analyzing a seed mode in a receive mode according to an embodiment of the present invention.

FIG. 5 is a flowchart illustrating a process of transmitting transmission data according to a determination result after determining whether or not a seed is transmitted by analyzing the seed mode in a transmission mode according to an embodiment of the present invention.

FIG. 6A is a diagram showing the data format of the RAL recruitment mode, and FIG. 6B is a diagram showing the data format of the RAL non employment mode.

The configuration of the composite wireless terminal for carrying out the present invention has the same configuration as in FIG. 1, and the same reference numerals.

Herein, an operation in which the PDA unit sets a CRC hiring / non-employment mode in the hybrid wireless terminal and communicates data with the PDA unit in the wireless telephone unit will be described as an example.

FIG. 2 is a configuration setting flowchart for setting a CRC mode for adding or omitting a CRC to data in an HDLC format to be transmitted by a transmitting side in data communication between a wireless telephone unit and a PDA unit in a complex wireless terminal. . FIG. 3 is a diagram illustrating a configuration of configuration information elements for setting a CRC mode as shown in FIG. 2. In addition, FIG. 6A illustrates a configuration of an HDLC format in which a CRC code is added in a complex wireless terminal to communicate with a wireless telephone unit and a PDA unit to which a CRC code is added. FIG. The HDLC format configuration is communicated between the telephone section and the PDA section.

2 and 3, the hybrid wireless terminal sets a CRC non-employment mode as a default mode when performing data communication between the wireless telephone unit and the PDA unit. In this case, when the second control unit 211 and the first control unit 111 of the PDA unit perform data communication through the UART150, as shown in FIG. 6B, data without the CRC code is transmitted and received. The user of the hybrid wireless terminal may determine a CRC hiring / non hiring mode through the key input unit 115 of the PDA unit. That is, it is possible to set a CRC employing mode when communicating between the composite wireless terminal and an external device (Personal Computer, etc.), and to set a non-CRC employing mode when communicating with the PDA and the wireless telephone unit.

Upon receiving the data, the first control unit 111 of the PDA unit checks whether the key data input in step 301 is a configuration information element in step 301. In this case, if the key data is a configuration information element, it is checked whether the mode set in step 303 is the CRC employment mode. If the key data is in the CRC employment mode, the CRC employment mode is set in step 305, or the CRC non-employment mode is set in step 307. . As described above, the CRC mode is determined using the configuration information element, and data is transmitted and received as shown in FIGS. 4 and 5.

4 illustrates a process in which the wireless telephone unit processes data output from the PDA unit. First, when the PDA unit outputs data from the first control unit 111, the second control unit 211 of the wireless telephone unit receives the data of the PDA unit through the UART150. In operation 401, the second controller 211 analyzes the configuration information element as shown in FIG. 3 and checks whether the CRC employment mode is set. In this case, when the CRC employing mode is set, the second control unit 211 reproduces the CRC code in the received data format in step 403, and checks whether the same CRC code is compared with the received CRC in step 405. In this case, if the two CRC codes have different values, the second control unit 211 ignores the received data without processing. If the two CRC codes are the same, the received data is processed in step 407. However, in step 401, when the CRC is not in the hiring mode, the second controller 211 proceeds to step 407 to immediately process the received data.

5 illustrates a process in which the wireless telephone unit outputs data to the PDA unit. First, when the second control unit 211 of the radiotelephone unit transmits data to the PDA unit, the second control unit 211 analyzes the configuration information element as shown in FIG. In this case, when the CRC employing mode is set, the second controller 211 reproduces the CRC code in step 503, and adds the reproduced CRC code to the data to be transmitted in step 505. Thereafter, the second control unit 211 formats the data to be transmitted in step 507. The transmission data is formatted in the form as shown in FIG. 6A to which the CRC code is added. In step 509, the second control unit 211 formats the transmission data formatted in the PDA unit through the UART150. 1 is sent to the controller 150.

In addition, if it is determined in step 501 that the CRC is not employed, the second controller 211 proceeds to step 507 to format the data to be transmitted, and formats the transmission data in the form as shown in FIG. 6B in which the CRC code is omitted. The formatted transmission data is transmitted to the first control unit 150 of the PDA unit through the UART150.

Then, the first control unit 111 of the PDA unit receives and processes the data transmitted from the wireless telephone unit by performing the process as shown in FIG. 4. In addition, the process of formatting data transmission data in the PDA proceeds to the flow as shown in FIG.

As described above, the composite wireless terminal shares necessary data between the wireless telephone unit and the PDA unit. That is, a telephone number table for performing a speed dial function of the wireless telephone unit may be provided, and the PDA unit may include a table for storing these telephone numbers and subscriber information. In this case, the wireless telephone unit and the PDA unit perform data communication to share the same data with each other. As described above, in case of data communication using a sync symplified HDLC format in order to share data with the sub-phone part and the PDA part in the hybrid wireless terminal, the wireless phone part and the PDA part are located close to each other, thereby causing a data error. There is no need to send a CRC code used to detect. Therefore, when performing data communication between the wireless telephone unit and the PDA unit in the hybrid wireless terminal as described above, the transmission side omits the CRC code and formats and transmits the transmission data, and the reception side reproduces the CRC and CRC when receiving the data. Omit the inspection process and process the received data immediately.

As described above, when two devices share data with each other in a composite wireless terminal including a wireless telephone unit and a PDA unit, the transmitting side formats and transmits transmission data by omitting the CRC code for error detection of data. The receiving side omits CRC code reproduction and error checking operations and immediately processes the received data. Therefore, the data transmission / reception processing method of the hybrid wireless terminal according to the embodiment of the present invention can reduce the data processing time by reducing the load of the wireless telephone unit and the PDA unit, and thus the data transmission and reception between the wireless telephone unit and the PDA unit can be quickly performed. There is an advantage that can be handled.

Claims (3)

In the composite wireless terminal device, A PD unit having a small computer function and having a configuration information table which performs a non-CC mode in internal communication; A radiotelephone unit having a configuration of a radiotelephone and having a configuration information table for performing an unaccepted mode when the internal communication is performed; Connected between the control unit of the wireless telephone unit and the PD unit, and composed of the U-RTI to transmit the data of HDC format in an asynchronous communication method, During data communication between the PD unit and the wireless telephone unit, the transmitting side transmits the formatted number by omitting the RDA code from the HDC data format, and the receiving side omits the RDA code reproduction and error detection operation. A data transmitting / receiving device for a composite wireless terminal, characterized in that the data is processed immediately. In the data transmission and reception method of a composite terminal device comprising a wireless telephone unit and a PD unit performing a small computer function, In the transmission mode, the RC code is omitted, and the data is formatted in the form of HDLC and then transmitted in an asynchronous communication method. In the reception mode, the RCD code reproduction and error detection process is performed in the HDLC format data received in the asynchronous manner. Method of transmitting and receiving data of a composite terminal device, characterized in that to omit and immediately process the received data. In the data transmission and reception method of a composite terminal device comprising a wireless telephone unit and a PD unit, Setting a non-CC mode in the internal communication between the wireless telephone book and the PD unit, and setting the mode in the CC mode when communicating with an external device; In the transmission mode, it checks whether or not the seed is adopted in the transmission mode. When the seed is not employed, the data is formatted and transmitted in the form of transmission data without the seed. Formatting and transmitting the data into a form; In case of receiving mode, it checks whether the seed is adopted or not, and in case of no seeding mode, it skips the process of playing the seed code and detects the error and immediately processes the received data. A method of transmitting and receiving data of a complex wireless terminal device, characterized in that the process of processing the received data only when the error is not compared to the code.

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