KR100251728B1 - Method for providing data service in multi wireless terminal - Google Patents

Abstract

PURPOSE: A method for providing data service in a multi-functional radio terminal is provided to prepare a PDA(Personal Data Assistant) for receiving data and to make a wireless telephone part transfer the received data to the PDA, by informing the PDA that the wireless telephone part receives data service. CONSTITUTION: The second CPU of a wireless telephone part checks whether a paging message is received from a radio interval(311). If the paging message is received, the second CPU analyzes it and checks whether a service type provided from a base station is a data service(313). If the service type is a data service, the second CPU gets ready to receive the data corresponding to the associated data service and generates an HDLC format(315). The second CPU transmits the generated HDLC format to a PDA through a UART(Universal Asynchronous Receiver Transmitter) to notify the PDA that data service has been started(319). If the data are received(321), the second CPU checks whether the data service is ongoing(323). If the data service is ongoing, the second CPU making the received data in the form of frames in accordance with the HDLC format and transmits them to the PDA through the UART(325).

Description

Method of providing data service of composite wireless terminal

The present invention relates to a data service providing method of a complex wireless terminal (Celluar + PDA) of the present invention, and more particularly, to a method of transferring data received when a data service is received from a wireless telephone unit of the composite wireless terminal to a PDA.

Existing cellular mobile communication terminals provide only a voice (VOICE) service, and there is a separate terminal (for example, PDA) for data service.

However, in the future, the PDA can be connected to the cellular mobile terminal to provide voice and data services, for example, FAX, SMS (Simple Message), Internet communication, and the like. A terminal incorporating a PDA is referred to as a composite wireless terminal hereinafter.

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 (interleaver & encoder), a decoder (deinterleaver & 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.

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. In addition, the composite wireless terminal transmits and receives data using an Async symplified HDLC format in order to share data between the wireless telephone unit and the PDA unit.

In the present invention, the wireless telephone unit and the PDA unit to provide a method for processing this when receiving the data corresponding to the data service in the wireless section in the wireless terminal connected to the UART150. That is, the wireless telephone base and the PDA unit will present a process for processing data when receiving data corresponding to the data service, respectively, and a communication method between the wireless telephone base and the PDA unit.

Accordingly, an object of the present invention is to provide a method for informing a PDA to a PDA when a data service is received in a complex wireless terminal so that the PDA prepares to receive data, and transmitting the received data to the PDA.

Another object of the present invention is to provide a method for a wireless telephone unit to process a data service when a complex wireless terminal is received.

Still another object of the present invention is to provide a method for processing a PDA when receiving a data service from a wireless telephone book.

A method of performing a data service of a complex wireless terminal including a wireless telephone unit and a PD unit for achieving the above objects includes: transmitting a data service start command to the PD unit when the wireless telephone unit receives a data service through a wireless section; Driving the execution unit corresponding to the data service upon receiving a data service start command; checking whether the wireless telephone unit is in data service when receiving data in a wireless section, and transmitting the received data to the PD unit when the data service is in progress. And a process of checking whether the PD unit is in data service when receiving data, and storing and processing the received data when the data service is in service.

1 is a block diagram of a composite wireless terminal according to an embodiment of the present invention.

2 is a control flowchart of a wireless telephone unit for providing service data in a composite wireless terminal according to an embodiment of the present invention.

3 is a control flowchart of a PDA for providing service data in a composite wireless terminal according to an embodiment of the present invention.

4 is a format diagram of a data service start command transmitted from a wireless telephone unit to a PDA in a complex wireless terminal according to an embodiment of the present invention.

5 is a structure diagram of a data frame transmitted from a wireless telephone unit to a PDA in a complex wireless terminal according to an embodiment of the present invention.

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

First, in adding the reference numerals to the components of each drawing, the same components have the same reference numerals as much as possible even if displayed on different drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

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

In the following description, the wireless phone unit first notifies the PDA of the data service reception in the composite wireless terminal and then transfers the actual data.

FIG. 2 is a diagram illustrating a process of receiving a data service in a wireless telephone unit of a complex wireless terminal according to an embodiment of the present invention.

3 is a diagram illustrating a processing process when a data service is received in a PDA of a complex wireless terminal according to an embodiment of the present invention.

4 is a diagram illustrating a data service start command format generated by the wireless telephone unit to notify the PDA of the data service upon reception of a data service according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating a structure of a data frame generated to transfer data received from a wireless telephone unit to the PDA according to an embodiment of the present invention.

Hereinafter, the operation of the present invention will be described in detail with reference to FIGS. 1, 2, 3, 4, and 5.

First, referring to FIG. 2, when a data service is received, the wireless phone unit processes the process. In operation 311, the second control unit (wireless phone control unit) 211 determines whether a paging message is received from the wireless section. do. In this case, when the call message is received, the second controller 211 proceeds to step 313, and when the call message is not received, the second controller 211 performs the corresponding mode.

In operation 313, the second controller 211 analyzes the call message and checks whether the service type provided from the base station is a data service. If the service type is a data service, the second controller 211 proceeds to step 315. If the service type is not a data service, the second controller 211 proceeds to step 329 to perform a call service.

The data service type is defined in TIA / EIA / IS-99 (Data Service Option Standard For Wideband Spead Spectrum Digital Cellular System), and the types of data service are shown in Table 1 below.

Service option Data Service Type 4 Asynchronous Data Service 5 G3 FAX 6 Short message service 7 Pacet Dta Service (Internet) 8 CDPD

Detecting that the service type is a data service (that is, detecting one of the data services described in Table 1), and proceeding to step 315, the second controller 211 prepares to receive data corresponding to the data service. It rings the ring type as a data service ring.

That is, the second control unit 211 generates the HDLC format (command format) as shown in FIG. 4 for notifying the PDA of the start of the data service. The command format may include a start flag indicating a start of a frame, a start command indicating a start of a data service (for example, may store a data service option number defined in the TIA / EIA / IS-99), and It consists of a length, a CRC for detecting data errors, and an end flag indicating the end of the frame.

In operation 319, the second control unit 211 transmits the generated frame to the PDA through the UART150 to notify the start of the data service.

After notifying the start of the data service, when receiving data in step 321, the second controller 211 checks whether data service is in progress in step 323. In this case, if the data service is in progress, the second controller 211 proceeds to step 325. If the data service is not in use, the second controller 211 ends the program.

On the other hand, the second control unit 211 detects that the data service is in progress and proceeds to step 325 to frame the received data according to the HDLC format immediately transmitted to the PDA through the UART150, and ends the program. In addition, if data is continuously received, the operation 321 is repeatedly performed.

The format of the HDLC transmitted to the PDA is shown in FIG. 5. That is, a start flag indicating a start of a frame, a command indicating a reception data (for example, an option number of a data service and a command indicating a transmission of actual data are stored together), the length of the transmitted data, and the actual data are displayed. It consists of a receive data area, a CRC to check for data errors, and an end flag to end the frame.

Next, a description will be given of a process of receiving a data service in a PDA of the hybrid wireless terminal according to an embodiment of the present invention.

Referring to FIG. 3, in step 411, the first controller 111 checks whether a data service start command is received from the wireless telephone unit through the UART150. In this case, when the data service start command is received, the first control unit 111 proceeds to step 413, and when the data service start command is not received, the control unit 111 proceeds to step 423 to perform a corresponding function. The data service start command is transmitted from the wireless telephone unit through the UART150 in the frame form as shown in FIG. 4.

The first control unit 111 that detects the reception of the data service start command and proceeds to step 413 checks whether the corresponding service execution unit is running. For example, if the data service start command is detected as a fax service, the corresponding service execution unit becomes a fax execution unit, and thus the first controller 111 checks whether the fax execution unit is running.

In this case, if the service execution unit is being driven, the first control unit 111 proceeds to step 417. If the service execution unit is not driving, the first control unit 111 proceeds to step 415. The first controller 111 detects that the corresponding service execution unit is not being driven and proceeds to step 415 to drive the corresponding service execution unit.

The first controller 111 proceeds from step 413 or step 415 to step 417 and checks whether there is data reception. At this time, when there is data reception, the first controller 111 proceeds to step 419. When there is no data reception, the first controller 111 continuously checks whether there is data reception.

The first controller 111 detects that the data is received and proceeds to step 419 and checks whether the data is in service. In this case, the first controller 111 proceeds to step 319 to store and process the received data. If the data service is not in progress, the first controller 111 terminates the program. In addition, if data is continuously received, steps 417 and below are repeatedly performed.

As described above, according to the present invention, when the data service is received in the hybrid wireless terminal, the wireless telephone unit notifies the PDA unit of the data service reception to prepare for data reception, and transmits the data received from the wireless telephone unit to the PDA to provide data service. Can be provided.

Claims (3)

In a data service performing method of a composite wireless terminal comprising a wireless telephone unit and a PD unit performing a small computer function, Transmitting a data service start command to the PD unit when the wireless telephone unit receives a data service through a wireless section; Driving, by the PD unit, an execution unit corresponding to the data service when the data service start command is received; Checking whether the wireless telephone unit is in data service when receiving data in a wireless section after starting the data service, and transmitting the received data to the PD unit when the data service is in progress; And a step of checking whether the PD unit is in data service upon receiving the data, and storing and processing the received data when the data service is in progress. The method of claim 1, The data service command frame structure, A method of performing a data service of a complex wireless terminal, comprising a start flag, a data service start command, a length of transmission data, a seed, and an end flag. The method of claim 2, The frame structure of the data transmitted from the wireless telephone unit to the PD unit, A method of performing a data service of a complex wireless terminal, comprising a start flag, a received data command, a length of a transmitted data, a data storage area, a seed message, and an end flag.

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