KR101823510B1

KR101823510B1 - Message Transporting Methode Using RF Module for Smartphone

Info

Publication number: KR101823510B1
Application number: KR1020160075519A
Authority: KR
Inventors: 박세진
Original assignee: 박세진
Priority date: 2016-06-17
Filing date: 2016-06-17
Publication date: 2018-01-30
Also published as: KR20170142301A; WO2017217831A1

Abstract

The present invention relates to a smartphone chat providing method using a radio module and includes an interface (110) connected to a smartphone (10,10 ') installed with an application to perform a function of an input and output interface, And a main controller 120 for performing wireless communication through the wireless transceiver 140. The method for providing a smartphone chat using the wireless module 100 includes the steps of: A transmission step of transmitting transmission data to be transmitted when it is determined that the communication is being used, and when it is determined as an idle state that is not being used for voice or data communication; and a receiving step of receiving the transmitted transmission data; A reception response step of determining whether reception data received in the reception step is missing or not, If the received data rakdoen retransmission request requesting to retransmit; and a retransmission step of retransmitting the received data to the missing retransmission request; The present invention relates to a smartphone chat providing method using a radio module.

Description

[0001] The present invention relates to a method of providing a smart phone chat using a wireless module,

Generally, there are many places in the developed countries such as the Philippines and Southeast Asian countries and India where wireless internet such as mobile communication network is still impossible. When living in such a country, the chat service, which is one of the main functions of the smart phone, can not be used due to the inability of the wireless Internet service, despite having a smart phone, thereby causing inconvenience to users' lives It is true.

Accordingly, there is a need for a means for providing mutual chat service using a smartphone even in areas where wireless Internet is not available.

In the meantime, as a conventional invention related to communication using a wireless module or a radio, there is disclosed a radio-cell phone service (Korean Patent Laid-Open No. 10-2006-0031566) of the following patent document, There is a problem in that it can not be used in an environment in which a mobile communication network is not provided.

On the other hand, existing walkie-talkie are often not suitable for use in data communication. In particular, when another person is using the network first, there is a problem that the network can not be used and it is operated in a half-duplex manner and is difficult to use at the same time.

Korean Patent Publication No. 10-2006-0031566

The present invention solves the above problems of the prior art and implements a messenger function of a smart phone through a general radio function of a low frequency band by installing a radio module in a smart phone and providing a chat service using a radio module, And to provide a smartphone chat providing method using a radio module capable of freely communicating even in an unavailable area.

In order to achieve the above-mentioned object, a smartphone chat providing method using a radio module of the present invention includes an interface (110) connected to a smartphone (10,10 ') installed with an application to perform an input and output interface function, A method for providing a smartphone chat using a transceiver module (100) including a main controller (120) connected to the interface (110) and performing wireless communication through a wireless transceiver (140) A transmission step of transmitting transmission data to be transmitted when it is determined that the network is in use for voice or data communication and is determined to be in an idle state not being used for voice or data communication; A reception step of determining whether reception data received in the reception step is missing or not, If the received data is missing from the new step response retransmission request requesting to retransmit; and a retransmission step of retransmitting the received data to the missing retransmission request; And a control unit.

In addition, the transmitting step receives the data to be transmitted from the smartphone 10 through the interface 110 (S10), calculates the size of the transmission data, stores the transmission data (S11) first, If it is determined that the size of the transmission data is larger than the transmission maximum value (S12), if it is determined that the size of the transmission data is not larger than the transmission maximum value, the stored transmission data is directly transmitted to the radio transceiver 140 (S16). If it is determined that the size of the transmission data is larger than the transmission maximum value, the transmission data is divided by the transmission maximum value and transmitted through the wireless transmission / reception unit 140 (S13 (S14). If the transmission is unsuccessful, the transmission failure is notified to the user through a notification window (S14a) When it is determined that the transmission is successful, to judge whether or not (S15) that the rest of the transmission data, is characterized in that the transmission data is all to be transmitted divided by the maximum transmission repeat performing the transmission process until transmission.

The transmission data may include a start flag, a continuous data flag, an operation protocol, a data ID for identifying each user, and a data number indicating a sequential number value of data for each user.

In the receiving step, the presence or absence of the received data is searched for (S20) from the wireless transceiver (140) to determine whether there is received data (S21) It is checked whether the initial start data of the received data is a predetermined start flag (S23). If the initial start data of the received data is the predetermined start flag, it is stored after the protocol classification and it is checked whether the length of the data is correct (S25), if it is determined that the length of the received data does not match, the process returns to the step of searching for the presence or absence of the received data from the wireless transmitting / receiving unit 140 (S20) And if it is determined that the length of the received data is correct, performing a corresponding operation according to the classified protocol, If the initial start data is not the predetermined start flag, it is checked whether the initial start data is a predetermined continuous data flag (S24). If the initial start data is the predetermined continuous data flag, (S26). If there is the start flag in the stored data, it is determined that the start flag is continuous data, and then it is determined whether the length of the data is correct (S25) If the start flag does not exist, it is determined as a reception error, and the process returns to the step of searching for the presence or absence of the reception data from the wireless transceiver 140 as an initial reception step (S20).

If the data is received (S30), the receiving and responding step confirms the data ID information (S31) to determine which user data is received, and transmits the data number, which is the sequential number value of the data for each user, After checking the data (S32), it is searched whether or not existing data corresponding to the data number before the data number exists, and it is checked whether or not there is not received data (S36). If it is determined that there is not received data (S37). If the non-received data on the unreceived list is greater than or equal to the predetermined maximum value N (S38), the control unit sets the reception error of the data number corresponding to the unreceived data (S37) , And outputs a notification window to notify the user (S39).

When the data is received (S30), the data ID information is confirmed (S31) to confirm which user's data, and whether the received data is an entry message or a first message of the user, Determines whether or not the user exists in the pre-created visitor list, changes the state of the user in the visitor list if the user is present in the pre-created visitor list, And if not, adds the user to the list of connected users.

When the data is received (S30), it is determined whether the data corresponds to an administrator authority command. If the data corresponds to the administrator authority command, the data ID information is checked (S31) If it is determined that there is an administrator registered in advance, if there is an administrator already registered, if the user is an administrator, an instruction corresponding to the received data is executed. If the administrator is not a registered administrator, If the user accepts the group invitation after inquiring as to whether or not to accept the request, the control unit registers the user as an administrator and executes an instruction corresponding to the received data. If the group invitation is rejected by the user, .

If it is determined in the idle state, it is determined whether or not there is received data missing in the reception response step. If there is no received data missing in the reception response step, only the reception list is transmitted, And if there is missing data in the reception response step, it is determined whether the size of the missing or not received list of the received data is within a specified range. If the size of the missing or not received list exceeds the specified range, And transmits the reception list, the non-reception list, and the corresponding message.

The step of determining the idle state may include calculating a root mean square (RMS) of an energy of a signal of the wireless network and calculating a root mean square (RMS) of an energy of a signal of the wireless network, And when it is less than the predetermined value, it is determined that the message is in an idle state in which the message can be transmitted and received.

According to the present invention, by installing a radio module in a smart phone and providing a chat service using the radio module, a messenger function of a smart phone through a general radio function in a low frequency band can be realized, There is an advantage that it is possible to provide a smartphone chat providing method using a radio module capable of communication.

1 is a block diagram illustrating a configuration of a radio module in which a smartphone chat providing method using a radio module according to an embodiment of the present invention is performed;
FIG. 2 is a flowchart illustrating a transmission procedure of a smartphone chat providing method using a radio module according to an embodiment of the present invention; FIG.
3 is a flowchart illustrating a procedure of receiving a smartphone chat providing method using a radio module according to an embodiment of the present invention.
4 is a flow chart showing an acknowledgment step of a smartphone chat providing method using a radio module according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating steps of operating an administrator privilege in a smartphone chat providing method using a radio module according to an exemplary embodiment of the present invention.
FIG. 6 is a flowchart illustrating steps of requesting retransmission of unreceived data in a smartphone chat providing method using a radio module according to an exemplary embodiment of the present invention;
7 is a flowchart illustrating a step of retransmitting unreceived data in a smartphone chat providing method using a radio module according to an embodiment of the present invention.
8 is a flowchart illustrating a list management process of a smartphone chat providing method using a radio module according to an embodiment of the present invention.
9 is a flowchart illustrating an administrator function of a smartphone chat providing method using a radio module according to an embodiment of the present invention.
10 is a flowchart showing a retransmission function in an idle state of a smartphone chat providing method using a radio module according to an embodiment of the present invention;

Hereinafter, a method of providing a smartphone chat using a radio module according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that, in the drawings, the same components or parts are denoted by the same reference numerals whenever possible. In describing the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

First, a description will be given of a transceiver module 100 that is provided to provide a smartphone chat using a transceiver module according to an embodiment of the present invention. 1, the transceiver module 100 includes an interface 110 connected to a smartphone 10, 10 'in which an application is installed to perform the functions of an input and an output interface, And a main controller 120 for performing wireless communication through the wireless transceiver 140.

In this case, the transceiver module 100 may further include a storage unit 130 connected to the main control unit 120 as shown in FIG. The storage unit 130 may be configured to use the storage means of the smartphone 10 or 10 'and the storage unit 130 may be connected to the interface 110 And is connected to the main controller 130. 1, the storage unit 130 is divided into a send buffer 131, a read buffer, and a data database 133, .

The interface 110 may be a wired connection using a USB 111 and may be wirelessly connected using a Bluetooth 112. [ Meanwhile, the wireless transceiver 140 is configured by a low frequency communication module that uses a common frequency. The wireless transceiver 140 selects a communication channel by changing any one of various channels within a public frequency band that is allowed to use, Is preferable.

In addition to transmitting data to the smartphone 10 or 10 ', the interface 110 preferably transmits status information indicating whether the wireless network (voice or data) is used. In addition, it is preferable that a voice command signal (PTT: Push to talk) can be sent to the interface 110 when the smartphone 10 or 10 'does not output voice directly. In this case, the transceiver module 100 preferably includes a microphone and a speaker. On the other hand, when a voice signal is transmitted by pressing the voice command signal (PTT: Push to talk)), if the ID of the sender (sender) is sent immediately before the voice signal, It is desirable to be able to display the ID or picture on the smartphone. In addition, it is possible to induce the participant to participate in the conversation by expressing a notification sound on the receiving smartphone.

Next, a method of providing a smartphone chat using a radio module according to an embodiment of the present invention will be described in detail.

First, the transmission step of the smartphone chat providing method using the radio module according to the embodiment of the present invention will be described with reference to FIG. As shown in FIG. 2, in the transmitting step of the smartphone chat providing method using the radio module according to the embodiment of the present invention, the amount of data that can be transmitted per unit time is extremely limited since the low frequency communication is used. (Preferably, it is preferably set to be within about 50 bytes) in consideration of the characteristics of the base station apparatus. That is, when data to be transmitted from the smartphone 10 is received through the interface 110 (S10), the size of the transmission data is calculated, and the transmission data is first transmitted to the send buffer 131 of the storage unit 130 (S11). Thereafter, it is determined whether the size of the transmission data is larger than the transmission maximum value (S12).

If it is determined that the size of the transmission data is not greater than the transmission maximum value, the transmission data stored in the send buffer 131 is directly transmitted through the wireless transceiver 140 (S16).

If it is determined that the size of the transmission data is larger than the transmission maximum value, the transmission data stored in the send buffer 131 is divided by the transmission maximum value and is transmitted through the wireless transmission / reception unit 140 (S13) .

The step S13 of transmitting the transmission data through the wireless transceiver 140 may include checking whether the wireless network for wireless communication is in use for voice communication and if the wireless network is not being used for voice communication, it is determined that the mobile station is in an idle state and transmitted. As a method of confirming whether the wireless network for wireless communication is in use for voice communication or data communication, various embodiments are possible. In one embodiment, the root mean square (RMS) of the energy of the signal of the wireless network, It is possible to determine that the wireless network is being used for voice communication when it is greater than or equal to a predetermined value.

When the root mean square (RMS) of the energy of the signal of the radio network is less than a predetermined value, the mobile station is idle in a silent mode that can transmit and receive messages, It is preferable to be able to proceed with the transmission of the transmission data to be transmitted and the transmission or reception of the message when it is determined.

Then, it is determined whether or not the transmission is successful (S14). If the transmission fails, the transmission failure is notified to the user through a notification window (S14a).

If it is determined that the transmission is successful, it is determined whether there is remaining transmission data (S15), and the transmission process is repeated until all the transmission data divided by the transmission maximum value is transmitted. Thereafter, when it is determined that all the transmission data is transmitted without any remaining data, the transmission data is stored in the data DB 133 of the storage unit 130. If the transmission fails, the data is stored in the data DB 133 due to a data transmission error, and retransmission can be performed at a desired time.

The transmission data may include a start flag, a continuous data flag, an operation protocol (entry, group field command, GPS, ssing confirmation / retransmission list, etc.), who sent data A data ID (D_id) indicating the number of data and a sequential number value (data number: D_no) of data for each user. In this case, if the sequential number value exceeds the set maximum value, the sequential number value is again changed to "0" so that data can be continuously managed. At this time, it is preferable that the sequence number values are duplicated so that there is no problem in the algorithm progress such as "non-received data transmission ".

Next, the receiving process will be described with reference to FIG.

Referring to FIG. 3, after the presence or absence of the received data is determined (S20) by the wireless transceiver 140 (S21), the received data is received (S22). In this case, it is preferable to start countdown for arrival confirmation of the next data. As described above, when the countdown starts, it is checked whether or not the next data is received for a specified time. If there is a countdown, the time is initialized and the next data is waited for. If not, And outputs an error message.

On the other hand, when data reception starts, it is checked whether the initial start data of the received data is a predetermined start flag (for example, "0X02 ") (S23) , It is stored in the read buffer 132 of the storage unit 130 after classifying the protocol (entry, group field command, GPS, suing confirmation / retransmission list, etc.) S25). In this case, if it is determined that the length of the received data does not match (that is, if it is determined that there remains data that has not yet been received), the step of searching for the presence or absence of received data from the wireless transmitting / receiving unit 140 And repeats the data reception process until all data are received. If it is determined that the length of the received data is correct (i.e., all data are received), the corresponding task is performed according to the classified protocol.

On the other hand, if the initial start data is not the predetermined start flag, it is checked whether the initial start data is a predetermined continuous data flag (e.g., "0X03") (S24) In the case of the continuous data flag, it is checked whether the start flag is present in the data stored in the read buffer 132 (S26). If the start flag is present in the data stored in the read buffer 132, it is determined that the received data is continuous data and the data length is correct (S25). The data stored in the read buffer 132 If the start flag does not exist, it is determined as a reception error, and the process returns to the step of searching for the presence or absence of reception data from the wireless transceiver 140 as an initial reception step (S20).

Next, the reception acknowledgment will be described with reference to FIG.

It is preferable to send the information of the acknowledgment of the transmitted data so that the other party can confirm whether or not the data has been received even when the transmission and reception of the data is unstable. However, in the case of a transceiver, when the Acknowledge is directly sent and confirmed due to the nature of a network operating in a half duplex manner, there is a problem that the network becomes unstable due to collision with transmission data of other users. 4, when data is received (S30), the present invention confirms the data ID (D_id) information of the data (S31) and confirms who the data is, (Data number: D_no) of the data by the received data (S32).

If the data number is "4 ", for example, it is checked whether existing data corresponding to the data numbers 1, 2, and 3 exists in the data directory 132, )do.

If it is determined that there is non-received data, a reception error of the data number corresponding to the non-received data is set (S37), a non-received list is created (S37a), and the non-received data is transmitted. Such a non-received list is requested to the sender to transmit the new list as described later.

On the other hand, if the non-received data on the unreceived list is greater than or equal to the predetermined maximum value N (i.e., if there are too many unreceived data) (S38), the notification window is output to notify the user that it is difficult to receive the received data (S39). Although there is a problem that it is difficult to confirm whether the missing data is received before the user successfully receives the last data, a method of grasping the missing data without sending a separate receiving response is implemented .

Next, referring to FIG. 5, a description will be made of a channel change and security setting sensitivity change process through an administrator function.

Referring to FIG. 5, when the user proceeds to log in, it is confirmed whether or not the connection ID is an administrator account (S41). If an administrator privilege login connection is made (S42) A channel change request can be made to the users of the channel (S45). If the channel change request of the administrator occurs, it is confirmed whether the channel is changed by checking the entry ID of another user after moving to the requested channel (S46) (S47). If the channel change is not made, the administrator can retransmit the channel change message and automatically move to the previous channel to request the channel change (S49). Also, the administrator can request the users of the channel to change the security setting, the list of the preferred channel information, or the sensitivity change (S44). In this case, the preferred channel has a function of allowing a user belonging to the same group to easily move the channel according to a predetermined protocol predetermined when the quality of the channel is bad due to noise or the like.

On the other hand, when an administrator login connection is made, it is also possible that the function is executed without the user's consent, such as channel change. In this case, the user is preferably configured to be able to select his / her manager from the list of connected persons. Also, it is possible to generate a visitor list based on the entry signal and the chat data, and it is preferable to initialize the visitor list when terminating the application or changing the channel. Such a function is a level well known and practiced in the chat related art to which the present invention belongs, and a detailed description will be omitted.

Meanwhile, as described above, in the present invention, when there is an unreceived data, it may request to retransmit the unreceived data again. In this case, as shown in FIG. 6, after determining whether there is non-received data (S50), if it is determined that there is non-received data (i.e., the non-received list exists) (S54). If the specified range is exceeded, the data is divided based on the data of the latest list (S53) (S54). &Lt; / RTI >

In this case, when receiving the above-described non-receiving list, the transmitting side confirms whether the requested data list (D_id) ID of the requested non-receiving list is the original one, as shown in FIG. 7 , And is configured to retransmit unreceived data, which is preferably configured to process immediately if an unreceived request occurs such that the list is not cumulative. At this time, it is possible to check whether or not there is not received data with the received chat number. For example, when data number 5 is received, each chat item is displayed as 1,2,3,5 It is possible to confirm that the chat having the data number of 4 times has not been received and to display the specific icon such as "?" At the data position 4 on the chat screen so that the user can know that the chat has not been received. In this case, the user can immediately request the retransmission of the corresponding message by pressing the corresponding icon as needed.

On the other hand, at the time of data retransmission, it is checked whether there is no data for 10 seconds. If there is no data request, after checking the missing chat data, a random number A is generated and waits for the time corresponding to the random number A, . In this case, the reason why the random number is used is to prevent a case where a plurality of persons retransmit missing data at the same time so that no one can finally transmit due to a collision. At this time, the ID of the missing user is received, and the first DATA number, the last DATA number, and the missing DATA number are transmitted.

Meanwhile, as shown in FIG. 8, a smartphone chat providing method using a radio module according to an exemplary embodiment of the present invention generates a visitor list based on an entry signal or chat data to manage a connection state of users . 8, when the data is received (S30), the data ID information is confirmed (S31) to confirm which user's data, and whether the received data is an entry message, the first message of the user And then determines whether the user exists in the pre-created visitor list. In this case, if the user exists in the pre-created list of connected users, the status of the user in the list of connected users is set as being connected. If the user does not exist in the list of previously registered connected persons, .

Meanwhile, as shown in FIG. 9, it is preferable that the smartphone chat providing method using the radio module according to the embodiment of the present invention can further perform a function of a manager or a group host. 9, when data is received (S30), it is determined whether the data corresponds to an administrator authority command. If the data corresponds to the administrator authority command, the data ID information is confirmed (S31) And if there is an already registered manager, if the user is an administrator, it executes an instruction corresponding to the received data. If the user is not the pre-registered administrator, it is determined whether the user accepts the group invitation. If the user accepts the group invitation, the user is registered as an administrator, When the group invitation of the user is rejected, it is preferable to block the reception of the user.

In the smart phone chat providing method using the radio module according to an embodiment of the present invention, when there is missing data to be received, a method of requesting retransmission is basically as described above, It is preferable to use the idle state as described above in order to retransmit the messages without causing the messages to collide with each other.

That is, as shown in FIG. 9, when it is determined in the idle state, it is determined whether or not there is received data missing in the reception response step. If there is no received data missing in the reception response step, Only the list is sent. On the other hand, if there is missing reception data in the reception response step, it is determined whether the size of the non-reception list of the missing reception data is within the specified range. If the size of the non-reception list exceeds the specified range, , And transmits the reception list and the non-reception list. This embodiment corresponds to one of various embodiments. In addition to this, the retransmission order in the processing of the non-received data is determined by various methods based on the order of the received messages stored in the user ID or DB, or based on the order of the entry messages stored in the DB It is possible.

Meanwhile, the step of determining the idle state may include calculating a root mean square (RMS) of an energy of a signal of the wireless network and calculating a root mean square (RMS) of an energy of a signal of the wireless network And if it is less than the predetermined value, it is determined that the message is in an idle state in which the message can be transmitted and received.

In the meantime, although the transmission of a message has been described as an example in the present invention, various types of data such as photographs taken on a smart phone, pictures drawn on a smart phone, position coordinate data of a serial displayed on a map, It is possible to do.

In addition, when the conversation is stopped while the user presses the PTT and attempts to make a voice call, there is a problem of unnecessarily occupying the wireless network and wasting resources when it is not necessary to actually transmit voice. Therefore, it is preferable to detect the surrounding voice through the microphone of the smartphone and to determine that it is no longer necessary to occupy the communication network when the predetermined value is below the predetermined value (the above-mentioned RMS value can be used), and change to the silent mode.

On the other hand, when the PTT button is pressed during voice communication, it can be stored in the smart phone by dividing it into a transmission message. In case of voice communication while the PTT button is not pressed, it can be stored as a reception message.

On the other hand, if all available channels are searched through the channel search function to search for a user using the channel, or if a message containing a specific ID is received during the search, the user using the corresponding ID uses the channel It is desirable to be able to indicate that there is.

In the foregoing, optimal embodiments have been disclosed in the drawings and specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: Portable terminal
100: Radio module
110: Interface
111: YSB 112: Bluetooth
120: main controller
130:
131: Send buffer 132: Lead buffer
133: Data Division
140: Wireless transmission /

Claims

(110) connected to a smartphone (10,10 ') installed with an application to perform functions of an input and output interface, and a main controller (110) connected to the interface (110) A method for providing a smartphone chat using a transceiver module (100) including a transmitter (120)
A transmitting step of confirming whether a wireless network for wireless communication is in use for voice or data communication and transmitting transmission data to be transmitted when it is determined as an idle state not being used for voice or data communication;
A receiving step of receiving the transmitted transmission data;
(S31) to check who the data is, and if the data number is a sequential number of data for each user, the data ID is received (S32) from the received data;
A retransmission request step of requesting retransmission when there is missing data received in the reception response step;
A retransmission step of retransmitting the missing received data requested to be retransmitted; , &Lt; / RTI &
The transmitting step includes:
Upon reception of the data to be transmitted from the smartphone 10 through the interface 110 (S10), the size of the transmission data is calculated and the transmission data is stored first (S11) It is judged whether or not it is larger than the maximum value (S12)
If it is determined that the size of the transmission data is not larger than the transmission maximum value, the stored transmission data is directly transmitted through the wireless transmission / reception unit 140 (S16)
If it is determined that the size of the transmission data is larger than the transmission maximum value, the stored transmission data is divided by the transmission maximum value and transmitted through the radio transceiver 140 (S13)
It is determined whether the transmission is successful or not (S14). If the transmission fails, the transmission failure is notified to the user through a notification window (S14a)
If it is determined that the transmission is successful, it is determined whether or not there is remaining transmission data (S15), and the transmission process is repeated until all of the transmission data divided by the transmission maximum value is transmitted,
Wherein the transmission data includes a start flag, a continuous data flag, an operating protocol, a data ID for identifying each user, and a data number indicating a sequential number value of data for each user. Delivery method.

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The method according to claim 1,
Wherein the receiving step comprises:
(S20) the presence or absence of received data from the wireless transceiver (140) to determine whether or not there is received data (S21), and if the received data exists, receive data (S22)
(S23) whether or not the initial start data of the received data is a predetermined start flag. If the initial start data of the received data is the predetermined start flag, it is stored after the operation protocol classification, (S25), and then,
If it is determined that the length of the received data does not match, the process returns to step S20 to check whether there is received data from the wireless transmitting / receiving unit 140 and repeats the data receiving process until all data are received.
If it is determined that the length of the received data is correct, the corresponding operation is performed according to the classified operation protocol,
If the initial start data is not the predetermined start flag, it is checked whether the initial start data is a predetermined continuous data flag (S24)
If the initial start data is the predetermined continuous data flag, it is checked whether the start flag exists in the stored data (S26)
If the start flag is present in the stored data, it is determined that the received data is continuous data and that the data length is correct (S25). If there is no start flag in the stored data, it is determined as a reception error And returning to the step of searching for the presence or absence of the received data from the wireless transmitting / receiving unit (140) as an initial receiving step (S20).

The method according to claim 4,
The receiving and responding step includes:
It is searched whether existing data corresponding to the data number before the data number exists,
If it is determined that there is non-received data, a reception error of the data number corresponding to the non-received data is set (S37), a non-received list is created (S37a)
When the non-received data on the non-received list is greater than or equal to a predetermined maximum value (N) (S38), a notification window is output and notified to the user (S39).

The method according to claim 5,
If the data is received (S30), the data ID information is confirmed (S31) to confirm which user's data, and if the received data is an entry message or a first message of the user, It is judged whether or not it exists in the pre-created visitor list,
And changing and setting the state of the user in the visitor list if the user is present in the pre-created visitor list,
And adding the user to the list of connected users when the user is not present in the pre-created list of connected users.

The method according to claim 5,
When the data is received (S30), it is determined whether the data corresponds to an administrator authority command. If the data corresponds to the administrator authority command, the data ID information is confirmed (S31)
After judging whether there is an already registered manager,
If the user is an administrator, executes an instruction corresponding to the received data,
The method comprising the steps of registering the user as an administrator and executing a command corresponding to the received data when the user accepts the group invitation after determining whether the user accepts the group invitation, And when the group invitation is rejected by the user, the reception of the user is blocked.

The method according to claim 5,
If it is determined that the vehicle is in the idle state,
It is determined whether or not there is received data missing in the reception response step,
If there is no received data missing in the reception response step, only the reception list is transmitted,
If there is missing reception data in the reception response step,
Determining whether a size of the non-received list of the missing received data is within a specified range, dividing data based on the data when the size of the non-received list exceeds a specified range,
And transmitting the reception list, the non-reception list, and a corresponding message to the smartphone.

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