KR101742997B1 - Method and Apparatus for Transmitting and Receiving of Data - Google Patents

Method and Apparatus for Transmitting and Receiving of Data Download PDF

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Publication number
KR101742997B1
KR101742997B1 KR1020160020999A KR20160020999A KR101742997B1 KR 101742997 B1 KR101742997 B1 KR 101742997B1 KR 1020160020999 A KR1020160020999 A KR 1020160020999A KR 20160020999 A KR20160020999 A KR 20160020999A KR 101742997 B1 KR101742997 B1 KR 101742997B1
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South Korea
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data
condition
terminal device
service server
transmitted
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KR1020160020999A
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Korean (ko)
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장재성
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에스케이텔레콤 주식회사
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    • H04L67/36—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • H04L67/16—

Abstract

The present invention relates to a data transmission / reception method, and more particularly, to an Internet of Things (IOT) system to which a LoRa (Long Range) communication technology is applied, And receives data satisfying the second condition from the other terminal apparatus. After confirming whether the first condition and the second condition are mapped to each other, the stored data is transmitted to the other terminal apparatus, In Class A type transmission scheme, it supports efficient downlink, and IoT device communication can be provided while minimizing battery consumption of IoT device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data transmission /

[0001] The present invention relates to a data transmission / reception method, and more particularly, to an IoT (Internet of Things) system to which narrowband communication technology is applied, To a data transmission method and apparatus therefor.

The contents described in this section merely provide background information on the present embodiment and do not constitute the prior art.

In order to popularize the Internet of the Things (IoT) service, a small amount of data of various sensors and control devices should be transmitted and received at a long distance with reliability and security. However, the technology applied to the current IoT is short- Long-range IoT technology is not standardized, and the general-purpose is low.

To solve these problems, LPWA (Low Power Wide Area) network technology has recently been attracting attention. LPWA communication technology is a term collectively referred to as IoT-based network technology that is specialized for small amount of data transmission that supports low battery life and long battery life requiring low-speed transmission. Typical examples of such LPWA network technology are LoRa Technology.

The LoRa (Long Range Sub-Ghz Module) is a low-power, long-distance communication protocol using 900MHz band frequency, which eliminates the need for many repeaters and APs to reduce the cost of infrastructure construction and provides greater scalability and cost for embedded applications Which means a communication protocol that can provide efficiency.

Such an IoT system using LoRa technology can be implemented as a LoRa device, a network server, and an application server.

However, the IoT system to which the LoRa technology is applied has a problem that it is difficult to provide data communication between the LoRa devices due to the uplink communication environment in which the data acquired from the LoRa device is transmitted to the server.

Specifically, the LoRa technology has three data transmission methods of Class A / B / C. In the case of Class B, downlink is supported in a fixed period unit, and Class C always supports downlink. In this case, The battery consumption of the I / O terminal is shortened and the life of the I / O terminal is shortened. If the data transmission / reception continues using the Class B / C, the meaning of the I /

On the other hand, in the case of Class A, although the battery consumption is small, it is very difficult to provide the downlink data to the IoT device and provide the downlink data for a very short time after transmitting the uplink data.

Korean Patent Laid-Open No. 10-2015-0035971 (Name: Communication protocol for secure data transmission between smart devices or smart sensors and network gateways on the Internet, 2015.04.07)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a data transmission / reception method for supporting downlink data in a Class A type of IoT system to which LoRa technology is applied.

More specifically, the present invention relates to a method and apparatus for transmitting data to a service terminal, when a service server receives data for transmission from one terminal device to another terminal device, stores the data in a service server, When the service server receives the service data, the service server detects it, confirms whether the other terminal device is a terminal device to receive the stored data, and transmits the stored data to the other terminal device. Thus, A method of transmitting and receiving data supporting a link, and an apparatus therefor.

However, the object of the present invention is not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood from the following description.

According to another aspect of the present invention, there is provided a method of transmitting and receiving data in a service server that provides a communication network service to one or more terminal devices, the method comprising: The method comprising the steps of: receiving data satisfying at least one first condition set for a specific terminal device; storing the received data in the service server; receiving, from at least one other terminal device, Comprising the steps of: receiving data satisfying a second condition; checking if the first condition and the second condition are mapped to each other; and if the first condition and the second condition are mutually mapped, To the other terminal apparatuses.

Determining whether data is received from the one or more other terminal devices within a predetermined time, and deleting the stored data if the data is not received from the one or more other terminal devices within the preset time period The method may further include determining whether the specific terminal device and the one or more other terminal devices belong to the same group, and the determining step may be determined through an application identifier (AppEUI).

The method may further include transmitting, to the specific terminal device, a response message reporting that the stored data is transmitted to the one or more other terminal devices when receiving the other data from the specific terminal device, May transmit the stored data to another terminal device that has transmitted the first received data among the data received from one or more other terminal devices, and when the data is transmitted to the one or more other terminal devices, the stored data is deleted Step < / RTI >

According to another aspect of the present invention, there is provided a method of transmitting and receiving data in a terminal device operating under control of a service server for providing a communication network service, Determining whether the data satisfies at least one condition that is set in advance; transmitting the acquired data to the service server if the at least one condition is satisfied; and receiving data stored in the service server from the service server Step < / RTI >

On the other hand, the above-mentioned data transmission / reception method can be provided as a computer-readable recording medium on which a program for carrying out the above-described method is recorded, and can be implemented as a computer program ≪ / RTI >

According to another aspect of the present invention, there is provided a service server for providing a communication network service to at least one terminal device, the service server comprising: And a data buffer for storing data received from the one or more terminal apparatuses and a data buffer for receiving data satisfying at least one first condition set for the specific terminal apparatus from the specific terminal apparatus, Storing one data in the data buffer and receiving data satisfying at least one second condition set for each of the one or more other terminal apparatuses from one or more other terminal apparatuses when the first condition and the second condition are mutually mapped The data stored in the data buffer A may include a control module for controlling to transmit to the at least one other terminal device.

According to another aspect of the present invention, there is provided a terminal device operating according to a control of a service server providing a communication network service, the terminal device including: a communication module for transmitting / receiving data with the service server; And a control module for controlling the data received by the service server to be received from the service server when the acquired data satisfies at least one predetermined condition and transmits the data to the service server through the communication module .

According to another aspect of the present invention, there is provided a communication network system for providing a communication network service to at least one terminal device, the communication network system comprising: And transmitting the data stored in the service server from the service server to the service server when the condition is satisfied and the data is transmitted to the service server through the communication module, When receiving data satisfying the first condition, storing the received data in the data buffer and receiving data satisfying at least one second condition set for each of the one or more other terminal devices from one or more other terminal devices , The first condition and the second condition Call to ensure that the mapping may include a service server to transmit data stored in the data buffer to the at least one other terminal device.

According to the present invention, when a service server receives and stores data satisfying a first condition from a specific terminal apparatus and receives data satisfying a second condition from another terminal apparatus, the first condition and the second condition are mutually mapped And then transmits the stored data to the other terminal devices, it is possible to provide communication between the IoT devices while minimizing the battery consumption of the IoT devices by supporting efficient downlink even in the Class A transmission method of LoRa technology.

In addition, various effects other than the above-described effects can be directly or implicitly disclosed in the detailed description according to the embodiment of the present invention to be described later.

1 is a diagram illustrating a main configuration of a communication network system according to an embodiment of the present invention.
2 is a diagram for explaining a class type for data transmission / reception according to an embodiment of the present invention.
3 is a block diagram showing a main configuration of a terminal device according to the present invention.
4 is a flowchart illustrating an operation procedure of a terminal according to an embodiment of the present invention.
5 is a block diagram showing a main configuration of a service server according to the present invention.
6 is a flowchart illustrating an operation procedure of a service server according to an embodiment of the present invention.
7 to 8 are data flow charts for explaining a data transmission / reception method according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS For a more complete understanding of the nature and advantages of the present invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings, in which:

In the following description and the accompanying drawings, detailed description of well-known functions or constructions that may obscure the subject matter of the present invention will be omitted. It should be noted that the same constituent elements are denoted by the same reference numerals as possible throughout the drawings.

The terms and words used in the following description and drawings are not to be construed in an ordinary sense or a dictionary, and the inventor can properly define his or her invention as a concept of a term to be described in the best way It should be construed as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

Also, terms including ordinal numbers such as first, second, etc. are used to describe various elements, and are used only for the purpose of distinguishing one element from another, Not used. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component.

In addition, when referring to an element as being "connected" or "connected" to another element, it means that it can be connected or connected logically or physically. In other words, it is to be understood that although an element may be directly connected or connected to another element, there may be other elements in between, or indirectly connected or connected.

Also, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. It is also to be understood that the terms such as " comprising "or" having ", as used herein, are intended to specify the presence of stated features, integers, It should be understood that the foregoing does not preclude the presence or addition of other features, numbers, steps, operations, elements, parts, or combinations thereof.

In addition, embodiments within the scope of the present invention include computer readable media having or carrying computer executable instructions or data structures stored in computer readable media. Such computer-readable media can be any available media that is accessible by a general purpose or special purpose computer system. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or in the form of computer- But is not limited to, a physical storage medium such as any other medium that can be used to store or communicate certain program code means of the general purpose or special purpose computer system, .

In the following description and claims, "network" or "communication network" is defined as one or more data links that allow electronic data to be transmitted between computer systems and / or modules. When the information is transmitted or provided to a computer system via a network or other (wired, wireless, or a combination of wired or wireless) communication connection, the connection may be understood as a computer-readable medium. Computer readable instructions include, for example, instructions and data that cause a general purpose computer system or special purpose computer system to perform a particular function or group of functions. The computer executable instructions may be binary, intermediate format instructions, such as, for example, assembly language, or even source code.

In addition, the invention may be practiced with other computer systems, including personal computers, laptop computers, handheld devices, multiprocessor systems, microprocessor-based or programmable consumer electronics, network PCs, minicomputers, mainframe computers, a pager, and the like. < RTI ID = 0.0 > [0040] < / RTI >

The invention may also be practiced in distributed systems environments where both local and remote computer systems linked by a combination of wired data links, wireless data links, or wired and wireless data links over a network perform tasks. In a distributed system environment, program modules may be located in local and remote memory storage devices.

In addition, the embodiment of the present invention can be applied to any IoT system that restricts downlink, and can be applied to LoRa technology in detail.

Therefore, the data transmission method according to the embodiment of the present invention will be described with reference to the LoRa technique in the specification of the present invention, which will be described later. In particular, among the data transmission types defined in the LoRa technique, .

However, this embodiment is not limited to the LoRa technology, and can be applied to any place where narrowband communication network systems such as LTN, weightless, and RPMA are applicable.

On the other hand, the data transmission type defined in the LoRa technique is of the "Class A / B / C" type, and the description of the data transmission class type according to each data transmission method will be described later.

Now, the main configuration of the communication network system for executing the data transmission / reception method according to the embodiment of the present invention will be described with reference to the drawings.

1, a communication network system according to the present invention may include one or more terminal devices 100, one or more gateways 200, and a service server 500.

In addition, the service server 500 may include a network server 300 and an application server 400.

The functions of the network server 300 and the application server 400 may be implemented separately as two servers, but they may be combined into one server and implemented in the form of a service server 500.

In the following description of the data transmission / reception method according to the embodiment of the present invention, the description will be made with reference to the service server 500 in which the network server 300 and the application server 400 are combined into one server.

That is, it is assumed that the data transmission / reception method according to the embodiment of the present invention to be described below operates and is implemented around the service server 500 in which the functions of the network server 300 and the application server 400 are combined.

However, the data transmission / reception method according to the embodiment of the present invention is not limited to the form of the service server 500 in which the network server 300 and the application server 400 are combined into one, It should be noted that the network server 300 and the application server 400 can be interworked with each other in a state where the server 400 is separated into two servers.

First, the terminal device 100 refers to a LoRa device to which the LoRa technology of the present invention is applied, and may correspond to various object devices capable of object communication. Various kinds of things such as various sensors, control devices, mobile phones, refrigerators, vacuum cleaners, washing machines, factory machines, vending machines, etc. can be operated by the terminal device 100 of the present invention.

In this terminal device 100, data transfer operations may be different for each LoRa type. For example, classes may be classified according to whether a downlink data packet is received by the terminal device 100, which will be described with reference to FIG.

Referring to FIG. 2, the terminal 100 may transmit data by changing the classified class through the MAC layer 10 for data transmission. In order to transmit data by changing the class, The information held by the terminal 10 may be shared not only by the terminal apparatus 100 but also by the gateway 200 and the service server 500. [

The class A 11 is a class in which the terminal device 100 can receive a downlink data packet by a predetermined number of times (for example, twice during 4 ms) at a predetermined time interval (for example, 1 s) Class B 13 denotes a class type in which the terminal apparatus 100 can receive a downlink data packet every predetermined period (for example, 128s), and the class C 15 means always a downlink data It means a class type that can receive packets.

When transmitting and receiving data to and from the class A 11, the terminal device 100 transmits the uplink data packet to the service server 500 after a predetermined number of times (for example, 1s) 2 times), so that battery consumption is very small.

However, since the time for receiving the downlink data packet after the transmission of the uplink data packet is very short, there is a lot of difficulty in actually receiving the downlink data packet. Therefore, the transmission method of the class A (11) It is very difficult to support data communication between the terminal devices 100. [

Therefore, in order to receive the downlink data packet and support data communication between the terminal devices 100, data must be transmitted to and received from the class B 13 or the class C 15. In this case, However, since the battery consumption of the terminal device 100 is large, the battery consumption of the terminal device 100 is minimized and the terminal device 100 is practically ineffective in an IoT environment in which the terminal device 100 must be used for a long period of time.

Therefore, in order to support communication between the terminal devices 100 by supporting downlink data packet reception while minimizing battery consumption in the IoT environment, transmission / reception of downlink data packets can be effectively performed while transmitting / receiving data to / And a method for effectively receiving a downlink data packet in the class A (11) according to the present invention is proposed in the present invention.

On the other hand, the terminal device 100 can be assigned a class type at the initial setting, and the class type can be changed during service operation. In other words, even if the terminal device 100 of the present invention is set to Class B and receives a downlink data packet according to a predetermined period, the terminal device 100 changes to Class A according to a request from the service server 500, It is possible to receive the downlink data packet for a predetermined time interval after transmitting the uplink data packet to the service server 500.

Particularly, when the terminal device 100 according to the embodiment of the present invention acquires the first data through the sensor or the communication device mounted on the terminal device 100, the acquired first data is transmitted to the terminal device 100 And transmits the first data to the service server 500. The second data is transmitted to the service server 500 at a predetermined time interval based on the transmission time, And receives data from the service server 500.

At this time, the first data is uplink data and the second data is downlink data.

The gateway 200 is connected to the terminal device 100 and transfers the information transmitted from the terminal device 100 to the service server 500 and the information transmitted from the service server 500 to the terminal device 100 Role. In particular, the gateway 200 of the present invention can be a base station to which the LoRa technology is applied, and can transmit and receive packets using the Chirp signaling scheme.

The gateway 200 of the present invention can be connected to a plurality of terminal devices 100. The gateway 200 transmits information transmitted from the terminal device 100 allocated or located within a predetermined radius to the service server 500, Including the identification number of < / RTI > The service server 500 can confirm the gateway 200 to which the terminal 100 is connected and performs a process of correctly transmitting the data packet transmitted from the service server 500 to the gateway 200. [

The network server 300 included in the service server 500 refers to a node serving as an exchange for authenticating the terminal device 100 and supporting transmission and reception of packets. More specifically, the network server 300 can relay the subscription procedure between the terminal device 100 and the application server 400. That is, when a subscription request message for connection to the application server 400 is transmitted from the terminal device 100, the application server 400 is checked using the application identification information included in the subscription request message, 400). ≪ / RTI > When the confirmation message for the subscription request message is received from the application server 400, the network ID and the terminal device address information are checked and transmitted to the application server 400 to generate a session key for encryption in the application server 400 Process.

When the subscription process is completed through the above process, the network server 300 can perform integrity verification of the data packets transmitted and received between the terminal device 100 and the application server 500. At this time, So that integrity verification can be performed.

The application server 400 included in the service server 500 is connected to the network server 300 and manages a unique service for each application by using various kinds of information transmitted from the terminal server 100 transmitted from the network server 300 , And can be controlled. There may be a plurality of such application servers 400 and may provide various application services such as temperature control, radiation management, municipal waste management, shipping management, parking management, air pollution management, fire management, and water pollution management. That is, the application server 400 of the present invention collects various kinds of information generated by the terminal device 100 via the network server 300 and transmits the corresponding control information to the terminal device 100 via the network server 300. [ .

The service server 500 including the network server 300 and the application server 400 receives the first data satisfying at least one first condition set for the specific terminal device from the specific terminal device 100 And stores second data when receiving second data satisfying at least one second condition set for one or more other terminal devices (100) from one or more other terminal devices (100) within a predetermined time, If the first condition and the second condition are mapped to each other, the first data is transmitted to one or more other terminal devices 100 that have transmitted the second data.

If the second data is not received from one or more other terminal devices 100 within a predetermined time after receiving and storing the first data, the stored first data can be deleted.

Meanwhile, the service server 500 may divide one or more terminal devices 100 into one or more groups in order to efficiently manage the downlink data and effectively support the communication between the terminal devices 100.

Only when the second data is received from one or more other terminal devices 100 belonging to the same group as the terminal device 100 transmitting the first data, the first data stored in the one or more other terminal devices 100 And provides it as downlink data.

The group to which one or more terminal devices 100 belong may be arbitrarily set by a service server 500 or an administrator who manages the service server 500 and may include one or more terminal devices 100, (AppEUI) that is stored in the application program or the like.

That is, the terminal devices 100 transmitting the data having the same application identifier can determine that they are the same group.

In addition, when the service server 500 or the administrator arbitrarily sets the group, it is possible to set the group based on the application identifier, although it can be set based on the identification information of the terminal device 100 or the like.

For example, if the data having the first application identifier and the data having the second application identifier are set to belong to the same group, even if the application identifiers of the plurality of data are different between the first application identifier and the second application identifier, As shown in FIG.

If the first data transmitted from the specific terminal device 100 to the service server 500 is transmitted to one or more other terminal devices 100, the service server 500 transmits the first data to the one or more other terminal devices 100 The first data is transmitted to one or more other terminal devices 100 to the specific terminal device 100 when the first data satisfying the first condition is received from the specific terminal device 100 A response message may be transmitted.

At this time, the response message may include information on the other terminal devices 100 that have received the first data.

If the second data satisfying the second condition is received from two or more other terminal devices 100 belonging to the same group within a predetermined time after storing the first data, The stored first data may be transmitted to another terminal device 100 and the stored first data may be deleted when the first data is transmitted to the other terminal device 100 that first transmitted the second data.

A processor mounted in each device constituting the IoT system for data transmission according to an embodiment of the present invention can process a program command for executing the method according to the present invention. In one implementation, the processor may be a single-threaded processor, and in other embodiments, the processor may be a multithreaded processor. Further, the processor is capable of processing instructions stored on a memory or storage device.

The communication network system for implementing the data transmission / reception method according to the embodiment of the present invention has been described above.

Hereinafter, a main configuration and an operation method of the terminal device 100 according to the embodiment of the present invention will be described.

FIG. 3 is a block diagram showing a main configuration of a terminal device 100 according to the present invention, and FIG. 4 is a flowchart illustrating an operation process of the terminal device 100 according to an embodiment of the present invention.

3, the terminal device 100 of the present invention may include a storage module 100, a communication module 130, a sensor module 150, and a control module 170. [

The storage module 110 is a device for storing data, and includes a main storage device and an auxiliary storage device, and stores an application program necessary for the functional operation of the terminal device 100. [ The storage module 110 may include a program area and a data area. Here, when the terminal device 100 activates each function in response to a request from the user, the terminal device 100 executes the corresponding application programs under the control of the control module 170 to provide each function.

The communication module 130 is a device for transmitting and receiving data with the service server 500 through the gateway 200.

The communication module 130 includes RF transmitting means for up-converting and amplifying the frequency of the transmitted signal, RF receiving means for low-noise amplifying the received signal and down-converting the frequency, data processing for processing a communication protocol according to a specific communication method Means and the like. The communication module 130 may include at least one of a wireless communication module (not shown) and a wired communication module (not shown). The wireless communication module is configured to transmit and receive data according to a wireless communication method. When the terminal device 100 uses wireless communication, the wireless communication module uses any one of a wireless network communication module, a wireless LAN communication module, And can transmit and receive data to and from the service server 500 through the gateway 200.

In particular, in the present invention, uplink data is transmitted to the service server 500 through the communication module 130, and downlink data is received from the service server 500.

The sensor module 150 is a device for collecting sensing information measured by the at least one sensor from at least one sensor mounted on the terminal device 100. The sensor module 150 senses sensed data measured by one or more sensors And transmit it to the control module 390.

The control module 170 controls the overall operation of the terminal device 100.

4, when the terminal device 100 acquires the first data through the sensor module 150 or the communication module 130, the operation of the terminal device 100 controlled by the control module 170 will be described with reference to FIG. (S103). If the acquired first data satisfies at least one first condition preset for the terminal device 100 (S103), the process returns to step S101, and if the first data satisfies the first condition, Data is collected until data is acquired, and if it is satisfied, the acquired first data is transmitted to the service server 500 (S105).

Since the data transmission / reception type of the current terminal device 100 is class A, the first data can be transmitted to the service server 500 and then received downlink data a predetermined number of times at a predetermined time interval. At this time, And receives the second data stored in the server 500 from the service server 500 (S107).

On the other hand, when the terminal device 100 has already transmitted the first data to the service server 500 and the first data transmitted to the service server 500 is received by the other terminal device 100 through the service server 500 In one case, the second data may be a response message.

That is, in order to confirm which terminal device 100 the terminal device 100 receiving the first data previously transmitted to the service server 500 of the terminal device 100 receives the first data, When transmitting to the server 500, a response message may be received from the service server 500.

As described above, the overall operation of the terminal device 100 may be controlled and performed by the control module 170 of the terminal device 100. [

The main configuration and the operation method of the terminal device 100 according to the present invention have been described above.

Hereinafter, the main configuration and operation method of the service server 500 according to the embodiment of the present invention will be described.

FIG. 5 is a block diagram illustrating a main configuration of a service server 500 according to the present invention. FIG. 6 is a flowchart illustrating an operation process of a service server 500 according to an embodiment of the present invention.

5, the service server 300 may include a network interface module 510, a storage module 530, a user interface module 550, and a control module 570.

The network interface module 510 is a device that transmits and receives data to and from a terminal device 100 located at a remote location through the gateway 200. [

The network interface module 510 may be represented by a logical combination of one or more software and / or hardware modules, for example, a network interface card and a corresponding Network Driver Interface Specification ("NDIS") stack .

The storage module 530 may include a group management DB 531 and a data buffer 533. The group management DB 531 includes two or more terminal devices 100 for supporting communication between the terminal devices 100 Group setting information for judging whether or not the terminal device 100 belongs to the same group is stored. It is checked whether the group information of each terminal device 100 and the condition of data transmitted by two or more terminal devices 100 belonging to the same group are mapped And stores the condition mapping information.

The data buffer 533 is a storage for storing the data transmitted by the terminal device 100 for a predetermined period of time.

The user interface module 550 is a device that transmits and receives data from an external source.

In particular, in the present invention, a user or an administrator sets a group to which each of the one or more terminal devices 100 belongs through the user interface module 550, and when data transmitted by one or more terminal devices 100 belonging to the same group are mutually mapped Can be set.

The control module 570 controls the overall operation of the service server 500.

The overall operation of the service server 500 controlled by the control module 570 will be described with reference to FIG.

In the description of FIG. 6, one or more terminal devices 100 will be described as a first terminal device 100, a second terminal device 100, etc. for convenience of explanation.

For convenience of explanation, the first and second terminal devices 100 are distinguished, but the roles of the first terminal device 100 and the second terminal device 100 can be changed.

That is, the first terminal device 100 can serve as the second terminal device 100 according to the embodiment of the present invention, and the second terminal device 100 can function as the first terminal device 100 ) Can play a role.

Now, the operation of the service server 500 will be described in detail. The service server 500 receives a request from the first terminal device 100 to request the first terminal device 100 to satisfy at least one first condition set for the first terminal device 100 1 data and stores it in the data buffer 533 (S201 to S203).

The first terminal device 100 receives the first data and the second terminal device 100 receives the second data from the second terminal device 100 belonging to the same group as the first terminal device 100, 2 data is received (S205). If the second data is not received so that the predetermined time elapses, the first data stored in the data buffer 533 is deleted (S207). If the second data is received within a predetermined time , The second data is stored in the data buffer 533 (S209), and it is determined whether the first condition and the second condition are mapped to each other (S211). If not, the process returns to step S205, When the data is mapped, the first data is transmitted to the second terminal device 100 (S213).

Thereafter, when the service server 500 receives another first data satisfying the first condition again from the first terminal device 100, the second data stored in the data buffer 533 is transmitted to the first terminal device 100). At this time, in order to report that the first data previously transmitted by the first terminal device 100 together with the second data or the second data is transmitted to the second terminal device 100, Response message to the first terminal device 100.

Here, the at least one first condition and the at least one second condition that are mutually mapped may be identical to each other, and may not be the same condition, but may be conditions corresponding to the first condition and the second condition.

For example, if one of the at least one first condition collects a sensed value between 25 degrees C and 27 degrees Celsius, and transmits the collected sensed value (first data), at least one of the second conditions One may transmit the collected sensing value (second data) when the sensing value is collected between 25 degrees and 27 degrees Celsius as in the first condition, and the humidity set to correspond to the first condition may be 10 If the sensing value is between 20% and 20%, the sensor may transmit the collected sensing value (second data).

At this time, the mapping condition of the second condition, which is the same as the first condition or corresponding to the first condition, may be preset by the administrator or the like.

When the second data is received from two or more second terminal devices 100 within a predetermined time, the second terminal device 100 corresponding to the first data received first receives the data stored in the data buffer 533 1 data, and delete the first data.

Whether the first terminal device 100 and the second terminal device 100 belong to the same group can be determined through the group setting information arbitrarily set by the administrator or the service server 500 and the application identifier (AppEUI ). ≪ / RTI >

That is, if the application identifiers are the same, it can be determined that they belong to the same group. Also, when the administrator or the service server 500 arbitrarily sets the group, the group can be set based on the application identifier.

The entire operation process of the service server 500 may be executed and implemented by the control module 570 of the service server 500 as described above.

The terminal device 100 and the service server 500 according to the embodiment of the present invention have the same hardware configuration as a typical Web server or a network server. However, the software includes a program module implemented through a language such as C, C ++, Java, Visual Basic, Visual C, or the like.

On the other hand, the memory mounted on each device of the present invention stores information in the device. In one implementation, the memory is a computer-readable medium. In one implementation, the memory may be a volatile memory unit, and in other embodiments, the memory may be a non-volatile memory unit. In one implementation, the storage device is a computer-readable medium. In various different implementations, the storage device may comprise, for example, a hard disk device, an optical disk device, or any other mass storage device.

Although the present specification and drawings describe exemplary device configurations, the functional operations and subject matter implementations described herein may be embodied in other types of digital electronic circuitry, or alternatively, of the structures disclosed herein and their structural equivalents May be embodied in computer software, firmware, or hardware, including, or in combination with, one or more of the foregoing. Implementations of the subject matter described herein may be embodied in one or more computer program products, i. E. One for computer program instructions encoded on a program storage medium of the type for < RTI ID = 0.0 & And can be implemented as a module as described above. The computer-readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter that affects the machine readable propagation type signal, or a combination of one or more of the foregoing.

The main configuration and operation method of the service server 500 according to the embodiment of the present invention have been described above.

Hereinafter, various embodiments according to the present invention will be described.

7 to 8 are data flow charts for explaining various embodiments according to the present invention.

Before describing the embodiment, it is assumed that data transmission / reception is performed between the terminal device 100 and the service server 500 for convenience of explanation.

However, as shown in FIGS. 7 to 8, all the data transmission / reception between the terminal device 100 and the service server 500 is performed by the gateway 200 ).

That is, in the description of the embodiment of the present invention, data transmission / reception is performed between the terminal device 100 and the service server 500, but all the data transmitted / received between the terminal device 100 and the service server 500 200) to be transmitted and received.

Now, an embodiment according to the present invention will be described in earnest with reference to FIG. 7 to FIG.

Referring to FIG. 7, when the first terminal device 100a acquires first data satisfying at least one first condition set for the first terminal device 100a and transmits the first data to the service server 500 (S301) , The service server 500 stores the first data in the data buffer 533 (S303).

If the second data satisfying the at least one second condition set for the second terminal device 100b is received from the second terminal device 100b belonging to the same group as the first terminal device 100a within a predetermined period of time If the first data is not received and the second data is received within the acknowledgment time, the second data is stored in the data buffer 533 (S307), and whether or not the first condition and the second condition are mutually mapped And transmits the first data stored in the data buffer 533 to the second terminal device 100b (S309).

If the first condition and the second condition are not mutually mapped, the service server 500 does not transmit the first data to the second terminal device 100b.

Here, the at least one first condition and the at least one second condition that are mutually mapped may be the same conditions as described above, and they may not be the same condition, but may be corresponding conditions based on conditions set by the manager or the like.

Whether the first terminal device 100a and the second terminal device 100b belong to the same group can be determined on the basis of the group setting information set by the service server 500 or the administrator, You can judge.

On the other hand, if the first terminal device 100a transmits another first data satisfying the first condition (S311) after the first data is transmitted to the second terminal device 100b, The data is stored in the buffer 533 in step S313 and the second data or the response message stored in the data buffer 533 is transmitted to the first terminal device 100a in step S315.

Here, the response message is a message for reporting that the second terminal device 100b has received the first data transmitted by the first terminal device 100a.

8, the first terminal device 100a transmits data satisfying at least one first condition set for the first terminal device 100a to the service server 500, (S401), the service server 500 stores the first data in the data buffer 533 (S403). Within a predetermined time period, the service server 500 stores the first data in the data buffer 533, If it does not receive data satisfying at least one second condition set for each terminal device from the first terminal device 100b to the n-th terminal device 100n, the first data is deleted.

If the second data satisfying the at least one second condition set for the second terminal device 100b is received from the second terminal device 100b within a predetermined time (S405) The first data stored in the data buffer 533 is transmitted to the second terminal device 100b in step S409 after confirming whether the first condition and the second condition are mapped, , And deletes the first data (S411).

Thereafter, the third terminal device 100c transmits third data satisfying at least one third condition set for the third terminal device 100c to the service server 500 (S413) Even if the third conditions are mutually mapped, the third terminal device 100c can not receive the first data since the first data is deleted and does not exist (S417).

That is, the second and third data satisfying the condition that two or more terminal devices, in this embodiment, the second terminal device 100b and the third terminal device 100c are mapped to the first condition, are transmitted to the service server 500 The first data is transmitted to the terminal device 100 corresponding to the data received first among the second and third data.

In other words, even if the second and third data are received within a predetermined time after the first data is received, since the second data is received earlier than the third data, the second terminal device 100b, which has transmitted the second data, 1 data, and does not transmit data to the third terminal device 100c that has transmitted the third data.

In this case, however, the third data is stored in the data buffer 533 for a predetermined period of time in order to transfer the third data transmitted by the third terminal device 100c to the other terminal device.

Here, the at least one first condition, the at least one second condition, and the at least one third condition, which are mutually mapped, may be the same condition of the three types and the same condition as described above, It may be the corresponding condition based on the conditions set by the administrator and the like.

7, the second terminal device 100b through the n-th terminal device 100n are connected to each other via the group setting information or the application identifier arbitrarily set by the manager or the service server 500. In this embodiment, 1 terminal apparatus 100a belonging to the same group.

On the other hand, the above-described embodiment of the present invention has been described on the assumption that data is transmitted / received in the class A type of LoRa technology as described above.

Accordingly, after the second terminal device 100b transmits the second data to the service server 500, the second terminal device 100b may receive the first data by detecting the reception of the downlink data a predetermined number of times at a predetermined time interval.

Various embodiments according to the present invention have been described above.

The method of transmitting and receiving data of the present invention as described above may be provided in the form of a computer-readable medium suitable for storing computer program instructions and data. At this time, the program recorded on the recording medium can be read and installed in the computer and executed, thereby executing the above-described functions.

In order to allow a computer to read a program recorded on a recording medium and to execute functions implemented by the program, the above-mentioned program may be stored in a computer-readable medium such as C, C ++, JAVA, machine language, and the like.

The code may include a function code related to a function or the like that defines the functions described above and may include an execution procedure related control code necessary for the processor of the computer to execute the functions described above according to a predetermined procedure. In addition, such code may further include memory reference related code as to what additional information or media needed to cause the processor of the computer to execute the aforementioned functions should be referenced at any location (address) of the internal or external memory of the computer . In addition, when a processor of a computer needs to communicate with any other computer or server that is remote to execute the above-described functions, the code may be stored in a memory of the computer using a communication module of the computer, It may further include a communication-related code such as how to communicate with another computer or a server, and what information or media should be transmitted or received during communication.

Such computer-readable media suitable for storing computer program instructions and data include, for example, magnetic media such as hard disks, floppy disks and magnetic tape, compact disk read only memory (CD-ROM) Optical media such as a DVD (Digital Video Disk), a magneto-optical medium such as a floppy disk, and a ROM (Read Only Memory), a RAM , Random Access Memory), flash memory, EPROM (Erasable Programmable ROM), and EEPROM (Electrically Erasable Programmable ROM). The processor and memory may be supplemented by, or incorporated in, special purpose logic circuits.

The computer readable recording medium may also be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner. The functional program for implementing the present invention and the related code and code segment may be implemented by programmers in the technical field of the present invention in consideration of the system environment of the computer that reads the recording medium and executes the program, Or may be easily modified or modified by the user.

While the specification contains a number of specific implementation details, it should be understood that they are not to be construed as limitations on the scope of any invention or claim, but rather on the description of features that may be specific to a particular embodiment of a particular invention Should be understood. Certain features described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented in multiple embodiments, either individually or in any suitable subcombination. Further, although the features may operate in a particular combination and may be initially described as so claimed, one or more features from the claimed combination may in some cases be excluded from the combination, Or a variant of a subcombination.

Likewise, although the operations are depicted in the drawings in a particular order, it should be understood that such operations must be performed in that particular order or sequential order shown to achieve the desired result, or that all illustrated operations should be performed. In certain cases, multitasking and parallel processing may be advantageous. Also, the separation of the various system components of the above-described embodiments should not be understood as requiring such separation in all embodiments, and the described program components and systems will generally be integrated together into a single software product or packaged into multiple software products It should be understood.

The present invention relates to a data transmission / reception method, and more particularly, to an IoT (Internet of Things) system to which LoRa (Long Range) communication technology is applied, To a data transmission method for providing communication and an apparatus therefor.

According to the present invention, when a service server receives and stores data satisfying a first condition from a specific terminal apparatus and receives data satisfying a second condition from another terminal apparatus, the first condition and the second condition are mutually mapped And then transmits the stored data to the other terminal devices, it is possible to provide communication between the IoT devices while minimizing the battery consumption of the IoT devices by supporting efficient downlink even in the Class A transmission method of LoRa technology.

Accordingly, the present invention can contribute to the development of the IoT service industry through the above-described data transmission / reception method, and the present invention is industrially applicable because it is not only possible to market or operate but also can be practically and practically carried out.

100: terminal device 200: gateway
300: Network server 400: Application server
500: service server

Claims (9)

A data transmission / reception method for allowing a terminal device to receive data for a certain period of time after data transmission of a terminal device,
Receiving and storing data satisfying at least one first condition, which is a data transmission / reception condition set for the terminal apparatus, from an arbitrary terminal apparatus;
Confirming whether the second condition and the first condition of the stored data are mapped to each other when receiving data satisfying at least one second condition as a data transmission / reception condition set for the other terminal device from another terminal device; And
Transmitting the stored data to the other terminal device if the first condition and the second condition are mapped to each other;
Lt; / RTI > The method according to claim 1,
And storing the data for a predetermined period of time. The method according to claim 1,
Determining whether the terminal apparatus and the other terminal apparatus belong to the same group;
Further comprising:
And if it belongs to the same group, performs the checking step. 4. The method of claim 3, wherein the determining comprises:
(AppEUI). ≪ Desc / Clms Page number 13 > The method according to claim 1,
Further comprising: after the transmitting, deleting the stored data. A method of transmitting and receiving data in a terminal apparatus capable of receiving data for a predetermined time after data transmission,
Determining whether the terminal device satisfies at least one second condition that is a data transmission / reception condition set for the terminal device;
Transmitting the acquired data to a service server if the at least one second condition is satisfied; And
Receiving, after the data transmission, data satisfying at least one first condition, which is transmitted from another terminal apparatus and is mapped to the at least one second condition among data stored in the service server;
Lt; / RTI > There is provided a service server for providing a communication service allowing a terminal device to receive data for a predetermined time after data transmission of the terminal device,
A storage module for storing condition mapping information in which at least one condition for transmitting / receiving data set for each terminal device is mutually mapped and data received from each terminal device; And
The method comprising the steps of: receiving data satisfying at least one first condition set for the terminal device from an arbitrary terminal device; storing the received data in the storage module; If the first condition and the second condition are mapped to each other based on the condition mapping information and if they are mapped to each other, A control module for controlling the transmission;
/ RTI > A terminal device capable of receiving data for a predetermined period of time after data transmission in conjunction with a service server,
A communication module for transmitting and receiving data to and from the service server; And
When the acquired data satisfies at least one second condition preset as a data transmission / reception condition, the data is transmitted to the service server, and then, from among data stored in the service server, transmitted from another terminal device through the service server, A control module for controlling to receive data satisfying at least one first condition that is mapped to the at least one second condition;
. A communication network system for allowing a terminal device to receive data for a certain period of time after transmitting data via a service server,
At least one condition is set as a data transmission / reception condition, and when the set at least one condition is satisfied, data is transmitted to the service server and data transmitted from another terminal device through the service server within a predetermined time after data transmission A plurality of terminal devices for receiving; And
The method comprising the steps of: receiving data satisfying at least one first condition set for the terminal device from an arbitrary terminal device, storing the received data, 2, the service server confirms whether the first condition and the second condition are mapped to each other, and transmits the stored data to the other terminal device when they are mapped to each other;
Lt; / RTI >
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101837684B1 (en) 2017-12-27 2018-03-12 부산대학교 산학협력단 System and Method for Acquisitioning Fast Multi Channel Data based on LoRaWAN
KR101936376B1 (en) * 2018-04-02 2019-04-03 중앙 아이.엔.티. 주식회사 A system for automatic controlling the rtu by iot communication based on lora
KR101990254B1 (en) * 2018-12-19 2019-06-17 부산대학교 산학협력단 Multiple Access Method and Apparatus for LoRa Tag Using Backscattering Communication
KR20190084642A (en) 2018-01-09 2019-07-17 주식회사 무스마 System of monitoring location of industrial equipment and method of monitoring location of industrial equipment
KR102124355B1 (en) 2019-01-31 2020-06-23 (주)엘렉스정보통신 Internet of Things data indexing system
KR20200121256A (en) * 2019-04-15 2020-10-23 주식회사 가디언이엔지 Apparatus and method for contolling tranffic based on client
KR102282004B1 (en) * 2020-07-20 2021-07-27 한국과학기술원 Method and apparatus for controlling data transmission of terminal using artificial intelligence in lora network

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101837684B1 (en) 2017-12-27 2018-03-12 부산대학교 산학협력단 System and Method for Acquisitioning Fast Multi Channel Data based on LoRaWAN
US10356820B1 (en) 2017-12-27 2019-07-16 Pusan National University Industry-University Cooperation Foundation Apparatus and method for acquisition of fast multi-channel data based on LoRaWAN
KR20190084642A (en) 2018-01-09 2019-07-17 주식회사 무스마 System of monitoring location of industrial equipment and method of monitoring location of industrial equipment
KR101936376B1 (en) * 2018-04-02 2019-04-03 중앙 아이.엔.티. 주식회사 A system for automatic controlling the rtu by iot communication based on lora
KR101990254B1 (en) * 2018-12-19 2019-06-17 부산대학교 산학협력단 Multiple Access Method and Apparatus for LoRa Tag Using Backscattering Communication
KR102124355B1 (en) 2019-01-31 2020-06-23 (주)엘렉스정보통신 Internet of Things data indexing system
KR20200121256A (en) * 2019-04-15 2020-10-23 주식회사 가디언이엔지 Apparatus and method for contolling tranffic based on client
KR102388617B1 (en) * 2019-04-15 2022-04-21 주식회사 가디언이엔지 Apparatus and method for contolling tranffic based on client
KR102282004B1 (en) * 2020-07-20 2021-07-27 한국과학기술원 Method and apparatus for controlling data transmission of terminal using artificial intelligence in lora network

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