KR20170085806A - Method and Apparatus for Acquiring Position of IoT Devices - Google Patents

Abstract

A method and an apparatus for measuring the position of an IoT device are disclosed.
According to the present embodiment, when the IoT application provides the location based service in the IoT system, the IoT platform server and the platform server that is divided into the location service platform server (location server) are interlocked so that the IoT device is connected only to the IoT platform server The main purpose is to provide a method and apparatus for unifying interfaces.

Description

Field of the Invention [0001] The present invention relates to a method and an apparatus for measuring a position of an IoT device,

The present invention relates to a method and apparatus for measuring the position of an IoT device in an Internet of Things (IoT) system.

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

The Internet of Things (hereinafter referred to as " IoT communication ") refers to communication carried out between objects and objects without human intervention, and includes M2M (Machine-to-Machine) communication or MTC (Machine Type Communication) As shown in FIG. A terminal device used in IoT communication is referred to as an IoT device (IoT Device) and has characteristics such as low mobility, time tolerance or delay tolerance, and small data transmission . IoT devices can be connected to and used by IoT platform servers.

The platform server for providing the existing IoT related service is dependent on the application service provided by the service provider. Thus, a specific service-oriented platform server has a problem in that it is expensive to install, extend and maintain the system when used in other service fields. Based on these problems, oneM2M has been discussing to develop a Common Services Platform standard that can be commonly used in various IoT service fields.

Among various IoT application services, location based services can be utilized in various industrial fields. The service quality can be improved by providing the function of providing and managing the location of IoT devices in the IoT platform server. However, when utilizing the existing location service platform server (hereinafter referred to as 'location server') for providing such a function, the IoT device must be connected to both the IoT platform server and the location server, The interface may become complicated.

In embodiments of the present invention, in an IoT system, when an IoT application provides a location-based service, an IoT platform server and a platform server that is divided into a location server are interlocked so that the IoT device is connected only to the IoT platform server, The main purpose is to provide a method and apparatus.

According to an embodiment of the present invention, there is provided a method for measuring the position of an IoT device in an Internet of Things (IoT) system, the method comprising: receiving a position information request signal for an IoT device from an IoT application; Determining whether or not a positioning function of the IoT device exists based on the information about the IoT device, transmitting a positioning basic information request signal corresponding to a determination result of whether or not the IoT device exists in the positioning function to the IoT device, Receiving location basic information from the location server apparatus based on the positioning basic information, receiving the location basic information from the location server apparatus, and transmitting the location information to the IoT application. Provides a location measurement method.

As described above, according to the embodiments of the present invention, when the IoT application provides the location based service in the IoT system, the IoT platform connects to the IoT platform server by interlocking the platform server that is divided into the IoT platform server and the location server Thereby providing a method and apparatus for unifying the interfaces and reducing the complexity of the IoT system.

According to the embodiments of the present invention, the IoT platform server can dynamically obtain the positioning basic information used for generating the position information of the IoT device according to the request of the IoT application, thereby providing the position information of the more sophisticated IoT device It is effective.

According to embodiments of the present invention, when the bandwidth between the IoT device and the IoT platform server is relatively narrower than the bandwidth between the IoT platform server and the location server, the IoT platform server aggregates positioning basic information acquired from the IoT device It is possible to efficiently provide the position information according to the QoS (Quality of Service).

1 is a configuration diagram of a conventional IoT system.
2 is a configuration diagram of an IoT system for measuring the position of an IoT device according to an embodiment of the present invention.
3 is a flowchart illustrating a method for measuring the position of an IoT device in an IoT system according to an embodiment of the present invention.

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

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description, together with the accompanying drawings, is intended to illustrate exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced.

Embodiments according to the present invention are mainly described in IoT communication. IoT communication can be variously called M2M (Machine to Machine Communication), MTC (Machine Type Communication), Smart Device Communication (SDC), or Machine Oriented Communication. The IoT communication is divided into the fields of energy, enterprise, healthcare, public services, residential, retail, transportation, and others. Fields. The present invention includes the above-mentioned fields, and is applicable to other fields.

1 is a configuration diagram of a conventional IoT system.

1, the conventional IoT system includes an IoT application 20, an IoT platform server device 30, an IoT device 40, a location server device 50, and a location application 60. Here, the IoT device 40 means an IoT device for which location information is requested from the IoT application 20. [ The location server apparatus 50 refers to a platform that supports a location application 60 for providing a location based service (LBS).

The conventional IoT system vertically implements a platform server device for supporting a different application service such as the IoT application 20 and the location application 60 for a specific application. Such a vertical platform structure is complicated because a terminal device such as an IoT device must be connected to each platform server device.

1, in order to acquire positional information on the IoT device 40 from the IoT platform server device 30, the existing position server device 50 and the IoT device 40 are interlocked . This is because the IoT platform server device 30 and the location server device 50 are designed to provide a specific system environment for the IoT application 20 and the location application 60, respectively.

Considering that most IoT devices are low-end devices, it may be difficult for an IoT device to be connected to a plurality of platform server devices as shown in Fig.

Therefore, in order for the IoT application to provide location-based services in the IoT system, it is necessary to unify the interfaces by allowing the IoT devices to be connected only to the IoT platform.

Hereinafter, an IoT system according to an embodiment of the present invention will be described with reference to FIG.

2 is a configuration diagram of an IoT system for measuring the position of an IoT device according to an embodiment of the present invention.

2, an IoT system 100 according to an embodiment of the present invention includes an IoT application 200, an IoT platform server 300, an IoT device 400, and a location server 500.

The IoT application 200 refers to an application that operates the service logic (Service Logic) and uses the IoT common service using one open interface in oneM2M. The IoT application 200 may also provide a location based service (LBS). The IoT application 200 may be implemented, for example, as an Application Entity (AE) of an Infrastructure Node (IN) located in an Infrastructure Domain defined by the oneM2M Architecture model .

The IOT platform server apparatus 300 may provide a common service function (CSF) to support various IoT applications. In addition, the IoT platform server apparatus 300 may provide location information of the IoT device 400 and provide a function to manage the location information. The IoT platform server device 300 may be implemented, for example, as a Common Service Entity (CSE) of an infrastructure node (IN) located in an infrastructure domain defined in the oneM2M architecture model.

The IoT device 400 refers to an IoT device for which location information is requested from the IoT application 200. The IoT device includes, for example, (i) a common service entity (CSE) and an application entity (AE) of an application service node (ASN) located in a field domain defined in the oneM2M architecture model or ) Application entity (AE) of an application dedicated node (ADN) or the like.

The location server apparatus 500 refers to a server apparatus that obtains information for location measurement from the IoT device 400, generates location information using the information, and provides the location information to the IoT platform server apparatus 300.

Hereinafter, a method of measuring the position of the IoT device 400 according to the embodiment of the present invention will be described with reference to FIG.

3 is a flowchart illustrating a method for measuring the position of the IoT device 400 in the IoT system 100 according to an embodiment of the present invention.

In order to measure the position of the IoT device 400, the IoT device 400 must be registered in the IoT platform server 300 (S310). In step S310, the IoT device 400 transmits relevant information about the IoT device 400 to the IoT platform server device 300. [

Specifically, in step S310, a resource named &quot; node &quot; may be utilized among APIs (application programming interfaces) provided by the IoT platform server apparatus 300. [ Here, the API provided by the IOT platform server apparatus 300 may be, for example, a REST API. <node> Attribute information of the resource is shown in [Table 1].

The IoT device 400 transmits the identifier (nodeID) of the IoT device 400 using the <node> resource when registering the IoT platform server device 300. [

The IoT device 400 may additionally transmit information on the positioning function in addition to the identifier (node ID). According to the embodiment of the present invention, the IoT device 400 generates related information about the IoT device 400 by using the <node> resource provided by the IoT platform server apparatus 300, Information can be stored in the IoT platform server apparatus 300. [ The attribute of the < node > resource that can be used in step S310 is LocationCapability.

The LocationCapability attribute is an attribute indicating information about the positioning function of the IoT device 400. [ Here, the positioning function can be classified into three types, for example. That is, the type in which the IoT device 400 is capable of positioning itself and can provide the positioning information directly to the IoT platform server 300, can not provide the positioning information by itself and can not provide the direct positioning information, A type in which only measurement information can be provided, and a type in which both of the above cases are possible. Herein, the measurement information necessary for positioning may be information that can be used for determining the position of the IoT device 400, and information that is directly measured and collected by the IoT device 400.

However, the three types of positioning functions of the IoT device 400 described in the LocationCapability attribute of Table 1 are merely examples, and the positioning function types of the IoT device 400 indicated by the LocationCapability attribute are not limited thereto It can be deformed.

According to another embodiment of the present invention, the information about the positioning function of the IoT device 400 may be included in the identifier of the IoT device 400 when the identifier is registered, and may be transmitted to the IoT platform server device 300. For example, the identifier of the IoT device 400 may be preset to include information on the positioning function as follows.

- 0.23.03.002.0323123. 01 : Self-positioning

- 0.23.03.002.03231431. 10 : I can not position myself

In step S320, the IoT platform server apparatus 300 receives a position information request signal for the IoT device 400 from the IoT application 200. [ The location information request signal may be, for example, a notification request signal for the occurrence of a location related event.

In the embodiment of the present invention, the IoT device 400 may request geo-fencing-based location information (hereinafter referred to as 'geofencing based location information') to the IoT platform server device 300 S320). The geofencing-based location information includes at least one or more information on, for example, whether the IoT device 400 is entering a geofence area, leaving a geofence area, and whether it is inside a geofencing area can do.

When the IoT device 400 requests the geofencing-based location information, it can call the API having the structure shown in [Table 2].

The <locationPolicy> resource is a resource describing a method of acquiring the location information of the IoT device 400. When the IoT application 200 acquires the location information of the IoT device 400, And an identifier of the device 400. In addition to the <locationPolicy> resource, an additional <container> resource may be required. The <container> resource is used to store location information obtained as a resource to hold data.

The IoT device 400 may request location information from the IoT platform server apparatus 300 by combining attributes described in [Table 2]. For example, when the IoT device 400 having an identifier of 0.20.302.398.2314921 requests notification when an event of leaving the city of Seoul occurs, it can be expressed as [Table 3]. [Table 3] shows the attributes of [Table 2] as JSON (JavaScript Object Notation).

  In step S330, the IoT platform server 300 determines whether there is a positioning function of the IoT device 400 based on the related information about the registered IoT device in step S310 (S330). The IoT platform server apparatus 300 can classify the IoT device 400 into a predetermined type according to the determination result of the presence or absence of the positioning function of the IoT device 400. [ For example, the IoT device 400 can be distinguished from the three types described above.

The IoT platform server apparatus 300 transmits a positioning basic information request signal corresponding to the determination result of the existence of the positioning function of the IoT device 400 to the IoT device 400 (S340). The IoT platform server apparatus 300 may periodically transmit the positioning basic information request signal according to the embodiment. Herein, the positioning basic information means information that is used by the position server apparatus 500 to generate position information requested by the IoT application 200.

The positioning basic information request signal may vary depending on the positioning function of the IoT device 400. [ That is, the IoT platform server apparatus 300 requests positioning basic information corresponding to the positioning function of the IoT device 400.

In addition, the IoT platform server apparatus 300 can dynamically request the positioning basic information according to the position information request signal received from the IoT application 200. [ For example, it is possible to change the positioning basic information request period or change the data type of the positioning basic information.

According to the embodiment of the present invention, in step S340, the IoT platform server apparatus 300 may generate a positioning basic information request signal by mapping the position information request signal acquired in step S320 to the <mgmtCmd> resource. The attribute and child resource information of <mgmtCmd> resource used at this time are shown in [Table 4].

As described above, the case where the IoT device 400 is divided into three types according to the presence or absence of the positioning function will be described as an example.

1. If you can position yourself

IoT platform server device 300 may request location information (e.g., latitude and longitude) from IoT device 400 using the <mgmtCmd> resource.

2. When positioning is not possible by oneself

The IoT platform server apparatus 300 can request the measurement information necessary for generating the position information in the IoT device 400 using the <mgmtCmd> resource.

3. Provide both cases 1 and 2

The IoT platform server apparatus 300 can request all of the measurement information necessary for generating the positioning information and the position information in the IoT device 400 using the <mgmtCmd> resource.

The IoT device 400 receiving the positioning basic information request signal transmits the positioning basic information to the IoT platform server 300 (S350). The IoT platform server apparatus 300 transmits the received positioning basic information to the position server apparatus 500 (S360).

According to an embodiment of the present invention, in step S360, the IoT platform server apparatus 300 may transmit positioning basic information in a manner such as a push notification. In addition, the IoT platform server apparatus 300 can accumulate the positioning basic information received in step S350 and transmit it to the position server apparatus 500 using the aggregation attribute described in [Table 2].

According to another embodiment of the present invention, in step S360, the location server apparatus 500 may acquire the positioning basic information by retrieving the positioning basic information received by the IoT platform server apparatus 300. FIG.

The location server apparatus 500 may generate position information of the IoT device 400 requested by the IoT application 200 based on the positioning basic information (S370). The location information may include geo-fencing based location information, and the geo-fenced location information may include, for example, entering the geo fence area of the IoT device 400, leaving the geo fence area, It is possible to include at least one or more information on whether or not it is inside.

The location server apparatus 500 transmits the generated location information to the IoT platform server apparatus 300 in step S380 and the IoT platform server apparatus 300 transmits the location information received in the IoT application 200 in step S390. . That is, the IoT platform server apparatus 300 responds to the location information requested by the IoT application 200 using the attributes specified in the API called by the IoT application 200 in step S320. For example, the IoT platform server apparatus 300 may transmit a location related event generation notification signal in response to a notification request signal for the occurrence of a location related event of the IoT application 200.

Although it is described in FIG. 3 that the processes S310 to S390 are sequentially executed, this is merely illustrative of the technical idea of the embodiment of the present invention. In other words, those skilled in the art will appreciate that the embodiments of the present invention can be implemented by changing the order described in FIG. 3 without departing from the essential characteristics of an embodiment of the present invention, It should be noted that FIG. 3 is not limited to the time-series order, since it can be variously modified and modified by being executed in parallel.

Meanwhile, each step of the flowchart shown in FIG. 3 can be implemented as a computer-readable code on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. That is, a computer-readable recording medium includes a magnetic storage medium (e.g., ROM, floppy disk, hard disk, etc.), an optical reading medium (e.g., CD ROM, And the like). 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 foregoing description is merely illustrative of the technical idea of the present embodiment, and various modifications and changes may be made to those skilled in the art without departing from the essential characteristics of the embodiments. Therefore, the present embodiments are to be construed as illustrative rather than restrictive, and the scope of the technical idea of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

As described above, the present embodiment is applied to the field of measuring the position of the IoT device in the IoT system, so that the IoT platform interworks with the platform server which is divided into the IoT platform server and the location service platform server (location server) So as to unify the interfaces and reduce the complexity of the IoT system.

100: IoT system 200: IoT application
300: IoT platform server device 400: IoT device
500: Location server device

Claims (1)

A method for measuring the position of an IoT device in an Internet of Things (IoT) system,
Receiving a position information request signal for the IoT device from an IoT application;
Determining whether or not a positioning function of the IoT device is present based on information about the IoT device previously registered;
Transmitting, to the IoT device, a positioning basic information request signal corresponding to a determination result of the presence or absence of a positioning function of the IoT device;
Receiving positioning basic information from the IoT device and transmitting the positioning basic information to the position server device;
Receiving location information generated based on the positioning basic information from the location server apparatus; And
Transmitting the location information to the IoT application
/ RTI &gt; of the IoT device.

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