WO2020085528A1 - Subscription expiration management method and m2m system employing same - Google Patents

Subscription expiration management method and m2m system employing same Download PDF

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Publication number
WO2020085528A1
WO2020085528A1 PCT/KR2018/012617 KR2018012617W WO2020085528A1 WO 2020085528 A1 WO2020085528 A1 WO 2020085528A1 KR 2018012617 W KR2018012617 W KR 2018012617W WO 2020085528 A1 WO2020085528 A1 WO 2020085528A1
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subscription
resource
subscription resource
last event
management method
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PCT/KR2018/012617
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French (fr)
Korean (ko)
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정승명
김재호
이지호
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전자부품연구원
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Definitions

  • the present invention relates to Internet of Things (IoT) / M2M (Machine to Machine) technology, and more particularly, to a method of managing a resource subscription-notification service in an M2M platform.
  • IoT Internet of Things
  • M2M Machine to Machine
  • the IoT / M2M service is generally implemented by a process of acquiring various data and performing a specific operation when the acquired data satisfy a predetermined condition at the same time.
  • the user application requests a subscription to acquire data efficiently. Then, in response to the subscription, the M2M platform sends a notification message to the user application when an event occurs.
  • the subscription resource is deleted by the common attribute expirationTime, but the unnecessary subscription resource is forced to operate continuously within the valid time.
  • Notification transmission success is defined as receiving a notification response.
  • the M2M platform must perform unnecessary event monitoring and continuously transmit notifications, which causes system performance reduction and network resource waste of the M2M platform.
  • the present invention has been devised to solve the above problems, and an object of the present invention is to provide a subscription expiration management method for deleting a subscription resource with reference to last event timestamp information and an M2M system to which the same is applied.
  • a subscription expiration management method includes generating a subscription resource; storing last event timestamp information in a subscription resource; and deleting the subscription resource by referring to the last event timestamp information.
  • the subscription expiration management method may further include a step of updating the last event timestamp when an event that satisfies the event notification criteria of the subscription occurs.
  • the deletion step may be to search for and delete the last event timestamp through discovery including filter criteria.
  • a successful notification transmission When a successful notification transmission is confirmed in a lower application layer or a transport layer, it may be updating an expirationTime of a subscription resource.
  • the application may delete a subscription resource that receives notification.
  • an electronic device includes: a communication unit communicating with an application of a user device; It includes; a processor that creates a subscription resource requested by an application, stores last event timestamp information in the subscription resource, and deletes the subscription resource by referring to the last event timestamp information.
  • the subscription resource can be deleted by referring to the last event timestamp information, and unnecessary event monitoring and notification transmission by an unused but not deleted subscription resource can be eliminated. In this way, it is possible to prevent system performance reduction and network resource waste of the M2M platform.
  • FIG. 1 is a diagram illustrating a resource structure of an M2M platform performing a subscription expiration management method according to an embodiment of the present invention
  • FIG. 2 is a diagram conceptually showing a result of deleting a subscription resource by a subscription expiration management method according to an embodiment of the present invention
  • FIG. 3 is a view showing an IoT / M2M system to which the present invention is applicable.
  • FIG. 4 is an internal block diagram of the electronic devices shown in FIG. 3.
  • FIG. 1 is a diagram illustrating a resource structure of an M2M platform performing a subscription expiration management method according to an embodiment of the present invention. As illustrated, subscription resources are generated in the M2M platform by a subscription request of a user application.
  • the C2 of the M2M platform additionally stores last event timestamp information in the subscription resource.
  • last event timestamp is the time at which the last event occurred and the last time notification was sent.
  • the CSE of the M2M platform updates the last event timestamp.
  • the last event timestamp stored / updated by the CSE of the M2M platform is referenced to delete the subscription resource, and is used in the following manner.
  • the administrator application may search for discovery including the last event timestamp as filter criteria through the oneM2M standard API, and delete the subscription resource in which the last event occurred a long time ago.
  • the CSE of the M2M platform can be configured / implemented to automatically delete the subscription resource. Specifically, the subscription resource is deleted from the expirationTime below.
  • the subscription expiration duration may be individually set by an application or commonly set by an operation policy, and may exist as a new attribute of subscription resources.
  • FIG. 2 conceptually shows the result of deleting the subscription resource by the above-mentioned methods.
  • the CSE of the M2M platform can be implemented by updating the expirationTime of the subscription resource, specifically, the last event timestamp of the expirationTime when the notification response is received.
  • a notification request message in a oneM2M lower application layer such as HTTP / MQTT / CoAP or a transport layer such as TCP, without confirming successful notification transmission with a protocol on the oneM2M application layer.
  • a oneM2M lower application layer such as HTTP / MQTT / CoAP or a transport layer such as TCP
  • the CSE of the M2M platform may be implemented by deleting the subscription resource that the AE receives the notification.
  • the subscription resource having the AE resource ID as the notification receiving address can be deleted.
  • a plurality of notification targets may be implemented by deleting only the corresponding AE resource ID.
  • the subscription resource can be deleted.
  • AEAnnc is not deleted in the remote CSE, but information confirming that it is unregistered in the link attribute is recorded.
  • FIG. 3 is a view showing an IoT / M2M system to which the present invention is applicable.
  • IoT / M2M system to which the present invention is applicable as shown in FIG. 3, the server 100-1, the gateway 100-21, 100-22, the device 100-31, 100-32, 100-33 , 100-34).
  • the number of electronic devices shown in FIG. 3, such as a server 100-1 constituting an IoT / M2M system, a gateway 100-21, 100-22, and a device 100-31, 100-32, 100- 33, 100-34) is an exemplary one, and therefore, the technical spirit of the present invention may be applied even when implemented differently.
  • connection structure of the electronic devices shown in FIG. 3 may also be replaced in other ways as necessary.
  • All electronic devices shown in FIG. 3 may perform a function of a Common Sservice Entity (CSE) as an M2M platform. That is, the server 100-1, the gateway (100-21, 100-22), the device (100-31, 100-32, 100-33, 100-34) all of the resource subscription / notification according to an embodiment of the present invention It can provide services.
  • CSE Common Sservice Entity
  • FIG. 4 is an internal block diagram of the electronic devices shown in FIG. 3.
  • Servers 100-1, gateways 100-21, 100-22, and devices 100-31, 100-32, 100-33, 100-34 are all required for implementing embodiments of the present invention. It becomes common. Therefore, in FIG. 3, these are referred to as reference numeral “100”, and are hereinafter referred to as electronic devices.
  • electronic devices include a communication unit 110, a processor 120, a storage unit 130, and a function block 140.
  • the communication unit 110 is a communication interface means for communicating with an external device and accessing an external network.
  • the processor 120 includes at least one AE (Application Entitr) and CSE (Common Service Entity). Depending on the type and function of the electronic device, AE may not be included.
  • the procedures required for the subscription expiration management presented above of the processor 120 are performed, and the storage unit 130 provides storage space necessary for the processor 120 to perform subscription expiration management.
  • the function block 140 performs a natural function of the electronic device.
  • the electronic device is the server 100-1
  • virtual machines providing user services correspond to the function block 140.
  • the technical idea of the present invention can be applied to a computer-readable recording medium containing a computer program that performs functions of the apparatus and method according to the present embodiment. Further, the technical idea according to various embodiments of the present invention may be implemented in the form of computer-readable codes recorded on a computer-readable recording medium.
  • the computer-readable recording medium can be any data storage device that can be read by a computer and stores data.
  • the computer-readable recording medium may be a ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical disk, hard disk drive, and the like.
  • computer-readable codes or programs stored in a computer-readable recording medium may be transmitted through a network connected between computers.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Provided are a subscription expiration management method for deleting a subscription resource by referring to last event timestamp information, and an M2M system employing same. A subscription expiration management method according to an embodiment of the present invention comprises the steps of: generating a subscription resource; storing last event timestamp information in the subscription resource; and deleting the subscription resource by referring to the last event timestamp information. Therefore, since a subscription resource can be deleted by referring to last event timestamp information, unnecessary event monitoring and notification transmission due to an unused but non-deleted subscription resource can be removed, and thus system performance degradation and network resource waste of an M2M platform can be prevented.

Description

구독 만료 관리 방법 및 이를 적용한 M2M 시스템Subscription expiration management method and M2M system using the same
본 발명은 IoT(Internet of Things)/M2M(Machine to Machine) 기술에 관한 것으로, 더욱 상세하게는 M2M 플랫폼에서 리소스 subscription-notification 서비스를 관리하는 방법에 관한 것이다.The present invention relates to Internet of Things (IoT) / M2M (Machine to Machine) technology, and more particularly, to a method of managing a resource subscription-notification service in an M2M platform.
IoT/M2M 서비스는 다양한 데이터를 취득하고, 취득된 데이터들이 사전에 정해진 조건을 동시에 만족하는 경우에 특정 동작을 수행하는 과정에 의해 구현되는 것이 일반적이다.The IoT / M2M service is generally implemented by a process of acquiring various data and performing a specific operation when the acquired data satisfy a predetermined condition at the same time.
사용자 애플리케이션은 데이터들을 효율적으로 취득하기 위해서 subscription(구독)을 요청한다. 그러면, 구독에 대한 응답으로, M2M 플랫폼은 이벤트 발생시 사용자 애플리케이션에 notification(통지) 메시지를 전송한다.The user application requests a subscription to acquire data efficiently. Then, in response to the subscription, the M2M platform sends a notification message to the user application when an event occurs.
subscription 리소스는 공통 속성인 expirationTime에 의해 삭제되지만, 유효한 시간 내에는 불필요한 subscription 리소스가 지속적으로 동작할 수 밖에 없다.The subscription resource is deleted by the common attribute expirationTime, but the unnecessary subscription resource is forced to operate continuously within the valid time.
이를 해소하기 위한 방안으로, notification 전송 실패 횟수가 특정 임계치를 초과하는 경우 subscription 리소스를 삭제하는 방법이 제시된 바 있다. notification 전송 성공은 notification response 수신하는 것으로 정의된다.As a method for resolving this, a method of deleting subscription resources has been proposed when the number of failed notification transmissions exceeds a certain threshold. Notification transmission success is defined as receiving a notification response.
하지만, 현재 oneM2M 표준에서는 notification response를 받지 않도록 request 메시지의 파라미터를 설정할 수 있로 설정할 수 있어, 이 경우에는 위 방법에 따른 subscription 리소스를 삭제는 불가능하다.However, in the current oneM2M standard, it is possible to set the parameters of the request message so that the notification response is not received, and in this case, it is impossible to delete the subscription resource according to the above method.
이에 따라, 이용하지 않지만 삭제되지 않은 subscription 리소스에 의해, M2M 플랫폼은 불필요한 이벤트 모니터링을 수행하여야 하고, notification을 계속하여 전송하여야 하는데, 이는 M2M 플랫폼의 시스템 성능 감소와 네트워크 자원 낭비를 유발한다.Accordingly, by the subscription resource that is not used but not deleted, the M2M platform must perform unnecessary event monitoring and continuously transmit notifications, which causes system performance reduction and network resource waste of the M2M platform.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은, last event timestamp 정보를 참조하여, subscription 리소스를 삭제하는 subscription expiration 관리 방법 및 이를 적용한 M2M 시스템을 제공함에 있다.The present invention has been devised to solve the above problems, and an object of the present invention is to provide a subscription expiration management method for deleting a subscription resource with reference to last event timestamp information and an M2M system to which the same is applied.
상기 목적을 달성하기 위한 본 발명의 일 실시예에 따른, subscription expiration 관리 방법은 subscription 리소스를 생성하는 단계; subscription 리소스에 last event timestamp 정보를 저장하는 단계; last event timestamp 정보를 참조하여, subscription 리소스를 삭제하는 단계;를 포함한다.  According to an embodiment of the present invention for achieving the above object, a subscription expiration management method includes generating a subscription resource; storing last event timestamp information in a subscription resource; and deleting the subscription resource by referring to the last event timestamp information.
본 발명에 따른 subscription expiration 관리 방법은 subscription의 event notification criteria를 만족하는 이벤트가 발생하면, last event timestamp를 갱신하는 단계;를 더 포함할 수 있다. The subscription expiration management method according to the present invention may further include a step of updating the last event timestamp when an event that satisfies the event notification criteria of the subscription occurs.
삭제 단계는, last event timestamp를 filter criteria로 포함한 discovery를 통해 검색하여 삭제하는 것일 수 있다. The deletion step may be to search for and delete the last event timestamp through discovery including filter criteria.
삭제 단계는, The deletion step,
expirationTime = last event timestamp + subscription expiration durationexpirationTime = last event timestamp + subscription expiration duration
위의 expirationTime에 subscription 리소스를 삭제하는 것일 수 있다. It may be to delete the subscription resource at the expirationTime above.
notification response를 수신하면, subscription 리소스의 expirationTime을 갱신하는 것일 수 있다. When receiving the notification response, it may be updating the expirationTime of the subscription resource.
하위 응용 계층 또는 전송 계층에서 성공적인 notification 전송을 확인하면, subscription 리소스의 expirationTime을 갱신하는 것일 수 있다. When a successful notification transmission is confirmed in a lower application layer or a transport layer, it may be updating an expirationTime of a subscription resource.
삭제 단계는, 애플리케이션이 등록 해제되면, 애플리케이션이 notification을 수신하는 subscription 리소스를 삭제하는 것일 수 있다. In the deleting step, when the application is unregistered, the application may delete a subscription resource that receives notification.
한편, 본 발명의 다른 실시예에 따른, 전자 기기는, 사용자 디바이스의 애플리케이션과 통신하는 통신부; 애플리케이션이 요청한 subscription 리소스를 생성하고, subscription 리소스에 last event timestamp 정보를 저장하며, last event timestamp 정보를 참조하여, subscription 리소스를 삭제하는 프로세서;를 포함한다. Meanwhile, according to another embodiment of the present invention, an electronic device includes: a communication unit communicating with an application of a user device; It includes; a processor that creates a subscription resource requested by an application, stores last event timestamp information in the subscription resource, and deletes the subscription resource by referring to the last event timestamp information.
이상 설명한 바와 같이, 본 발명의 실시예들에 따르면, last event timestamp 정보를 참조하여, subscription 리소스를 삭제할 수 있게 되어, 이용하지 않지만 삭제되지 않은 subscription 리소스에 의한 불필요한 이벤트 모니터링 및 notification 전송을 없엘 수 있어, 이로 인한 M2M 플랫폼의 시스템 성능 감소와 네트워크 자원 낭비를 방지할 수 있게 된다.As described above, according to embodiments of the present invention, the subscription resource can be deleted by referring to the last event timestamp information, and unnecessary event monitoring and notification transmission by an unused but not deleted subscription resource can be eliminated. In this way, it is possible to prevent system performance reduction and network resource waste of the M2M platform.
도 1은 본 발명의 일 실시예에 따른 구독 만료 관리 방법을 수행하는 M2M 플랫폼의 리소스 구조를 예시한 도면,1 is a diagram illustrating a resource structure of an M2M platform performing a subscription expiration management method according to an embodiment of the present invention,
도 2는 본 발명의 일 실시예에 따른 구독 만료 관리 방법에 의해 subscription 리소스를 삭제한 결과를 개념적으로 나타낸 도면,2 is a diagram conceptually showing a result of deleting a subscription resource by a subscription expiration management method according to an embodiment of the present invention,
도 3은 본 발명이 적용 가능한 IoT/M2M 시스템을 도시한 도면, 그리고,3 is a view showing an IoT / M2M system to which the present invention is applicable, and
도 4는, 도 3에 도시된 전자 기기들의 내부 블럭도이다.FIG. 4 is an internal block diagram of the electronic devices shown in FIG. 3.
이하에서는 도면을 참조하여 본 발명을 보다 상세하게 설명한다.Hereinafter, the present invention will be described in more detail with reference to the drawings.
도 1은 본 발명의 일 실시예에 따른 구독 만료 관리 방법을 수행하는 M2M 플랫폼의 리소스 구조를 예시한 도면이다. 도시된 바와 같이, M2M 플랫폼에는 사용자 애플리케이션의 subscription 요청에 의해 subscription 리소스들이 생성되어 있다.1 is a diagram illustrating a resource structure of an M2M platform performing a subscription expiration management method according to an embodiment of the present invention. As illustrated, subscription resources are generated in the M2M platform by a subscription request of a user application.
M2M 플랫폼의 CSE는 subscription 리소스에 last event timestamp 정보를 추가로 저장한다. last event timestamp는 마지막 이벤트가 발생한 시간으로, 마지막으로 notification 전송이 이루어졌던 시간이다.The C2 of the M2M platform additionally stores last event timestamp information in the subscription resource. last event timestamp is the time at which the last event occurred and the last time notification was sent.
subscription의 event notification criteria를 만족하는 이벤트가 발생할 때마다, M2M 플랫폼의 CSE는 last event timestamp를 갱신한다.Whenever an event that satisfies the event notification criteria of the subscription occurs, the CSE of the M2M platform updates the last event timestamp.
M2M 플랫폼의 CSE에 의해 저장/갱신되는 last event timestamp는 subscription 리소스의 삭제를 위해 참고되는데, 구체적으로 다음과 같은 방법으로 사용된다.The last event timestamp stored / updated by the CSE of the M2M platform is referenced to delete the subscription resource, and is used in the following manner.
첫째, 관리자 애플리케이션이 oneM2M 표준 API를 통해 last event timestamp를 filter criteria로 포함한 discovery로 검색하여, 오래전에 마지막 이벤트가 발생하였던 subscription 리소스를 삭제할 수 있다.First, the administrator application may search for discovery including the last event timestamp as filter criteria through the oneM2M standard API, and delete the subscription resource in which the last event occurred a long time ago.
둘째, subscription expiration duration이 경과하면, M2M 플랫폼의 CSE가 자동으로 subscription 리소스를 삭제하도록 설정/구현할 수 있다. 구체적으로, 아래의 expirationTime에서 subscription 리소스를 삭제하는 것이다.Second, when the subscription expiration duration has elapsed, the CSE of the M2M platform can be configured / implemented to automatically delete the subscription resource. Specifically, the subscription resource is deleted from the expirationTime below.
expirationTime = last event timestamp + subscription expiration durationexpirationTime = last event timestamp + subscription expiration duration
subscription expiration duration은 애플리케이션에 의해 개별적으로 또는 운영 정책에 의해 공통적으로 설정될 수 있으며, subscription 리소스의 신규 속성으로 존재할 수 있다.The subscription expiration duration may be individually set by an application or commonly set by an operation policy, and may exist as a new attribute of subscription resources.
도 2에는 위에서 언급한 방법들에 의해 subscription 리소스를 삭제한 결과를 개념적으로 나타내었다.FIG. 2 conceptually shows the result of deleting the subscription resource by the above-mentioned methods.
한편, notification response가 수신되는 상황이라면, M2M 플랫폼의 CSE는 notification response 수신시에 subscription 리소스의 expirationTime, 구체적으로 expirationTime의 last event timestamp를 갱신하는 것으로 구현하는 것이 가능하다.On the other hand, if the notification response is received, the CSE of the M2M platform can be implemented by updating the expirationTime of the subscription resource, specifically, the last event timestamp of the expirationTime when the notification response is received.
다른 방법으로, oneM2M 응용 계층 상의 프로토콜로 성공적인 notification 전송을 확인하지 않고, HTTP/MQTT/CoAP와 같은 oneM2M 하위 응용 계층 또는 TCP 같은 전송 계층에서 notification request 메시지로 전송 성공을 확인하는 것도 가능하다.Alternatively, it is also possible to confirm the success of the transmission with a notification request message in a oneM2M lower application layer such as HTTP / MQTT / CoAP or a transport layer such as TCP, without confirming successful notification transmission with a protocol on the oneM2M application layer.
또 다른 방법으로, AE(Application Entity : 사용자 애플리케이션)이 등록 해제되면, M2M 플랫폼의 CSE는 AE가 notification을 수신하는 subscription 리소스를 삭제하는 것으로 구현할 수도 있다.As another method, when the application entity (AE) is unregistered, the CSE of the M2M platform may be implemented by deleting the subscription resource that the AE receives the notification.
구체적으로, AE의 신규 속성으로 subscription cleanup 지시자를 명시적으로 포함하여 AE 등록을 해제하여 AE 리소스를 삭제하는 경우에, 해당 AE 리소스 ID를 notification 수신 주소(i.e. notificationURI)로 가지는 subscription 리소스를 삭제할 수 있다.Specifically, when the AE resource is deleted by explicitly canceling the AE registration by explicitly including the subscription cleanup indicator as a new attribute of the AE, the subscription resource having the AE resource ID as the notification receiving address (ie notificationURI) can be deleted. .
만약, 복수의 notification target을 포함하는 경우라면, 해당 AE 리소스 ID만 삭제하는 것으로 구현할 수도 있다.If a plurality of notification targets are included, it may be implemented by deleting only the corresponding AE resource ID.
한편, Registrar가 아닌 CSE의 경우는, AEAnnc 자원 삭제시 자신이 가진 subscription 리소스 중 해당 AE 리소스 ID(i.e. AEAnnc 리소스의 link 속성값)를 지시하는 경우, subscription 리소스를 삭제할 수 있다.On the other hand, in the case of a CSE that is not a registrar, when the AEAnnc resource is deleted, when the corresponding AE resource ID (i.e. link attribute value of the AEAnnc resource) is indicated among the subscription resources, the subscription resource can be deleted.
다른 방법으로, 복수의 notification targe을 포함하는 경우 해당 AE 리소스 ID만을 삭제하는 것도 가능하다.Alternatively, if a plurality of notification targe is included, it is also possible to delete only the corresponding AE resource ID.
현재 oneM2M 표준에서는, 원격 CSE에 AEAnnc가 삭제 되지는 않으나, link 속성에 등록 해제되었음을 확인할 수 있는 정보가 기록된다.In the current oneM2M standard, AEAnnc is not deleted in the remote CSE, but information confirming that it is unregistered in the link attribute is recorded.
도 3은 본 발명이 적용 가능한 IoT/M2M 시스템을 도시한 도면이다. 본 발명이 적용 가능한 IoT/M2M 시스템은, 도 3에 도시된 바와 같이, 서버(100-1), 게이트웨이(100-21, 100-22), 디바이스(100-31, 100-32, 100-33, 100-34)와 같은 다양한 전자 기기들이 상호 통신가능하도록 연결되어 구축된다.3 is a view showing an IoT / M2M system to which the present invention is applicable. IoT / M2M system to which the present invention is applicable, as shown in FIG. 3, the server 100-1, the gateway 100-21, 100-22, the device 100-31, 100-32, 100-33 , 100-34).
도 3에 도시된 전자 기기들의 개수, 이를 테면, IoT/M2M 시스템을 구성하는 서버(100-1), 게이트웨이(100-21, 100-22) 및 디바이스(100-31, 100-32, 100-33, 100-34)의 대수는 예시적인 것이므로, 이와 다르게 구현하는 경우도 본 발명의 기술적 사상이 적용될 수 있다.The number of electronic devices shown in FIG. 3, such as a server 100-1 constituting an IoT / M2M system, a gateway 100-21, 100-22, and a device 100-31, 100-32, 100- 33, 100-34) is an exemplary one, and therefore, the technical spirit of the present invention may be applied even when implemented differently.
나아가, 도 3에 도시된 전자 기기들의 연결 구조 역시, 필요에 따라 다른 방식으로 대체될 수 있음은 물론이다.Furthermore, it is needless to say that the connection structure of the electronic devices shown in FIG. 3 may also be replaced in other ways as necessary.
도 3에 도시된 모든 전자 기기들은, M2M 플랫폼으로써 CSE(Common Sservice Entity)의 기능을 수행할 수 있다. 즉, 서버(100-1), 게이트웨이(100-21, 100-22), 디바이스(100-31, 100-32, 100-33, 100-34) 모두 본 발명의 실시예에 따른 리소스 구독/통지 서비스를 제공할 수 있는 것이다.All electronic devices shown in FIG. 3 may perform a function of a Common Sservice Entity (CSE) as an M2M platform. That is, the server 100-1, the gateway (100-21, 100-22), the device (100-31, 100-32, 100-33, 100-34) all of the resource subscription / notification according to an embodiment of the present invention It can provide services.
도 4는, 도 3에 도시된 전자 기기들의 내부 블럭도이다. 본 발명의 실시예를 구현함에 있어 필요한 구성들은 서버(100-1), 게이트웨이(100-21, 100-22), 디바이스(100-31, 100-32, 100-33, 100-34) 모두가 공통된다. 따라서, 도 3에서는 이들을 참조 부호 "100"으로 통칭하여 도시하였으며, 이하에서 전자 기기로 통칭한다.FIG. 4 is an internal block diagram of the electronic devices shown in FIG. 3. Servers 100-1, gateways 100-21, 100-22, and devices 100-31, 100-32, 100-33, 100-34 are all required for implementing embodiments of the present invention. It becomes common. Therefore, in FIG. 3, these are referred to as reference numeral “100”, and are hereinafter referred to as electronic devices.
도 4에 도시된 바와 같이, 본 발명의 다른 실시예에 따른 전자 기기들은, 통신부(110), 프로세서(120), 저장부(130) 및 기능 블록(140)을 포함한다.4, electronic devices according to another embodiment of the present invention include a communication unit 110, a processor 120, a storage unit 130, and a function block 140.
통신부(110)는 외부 기기와 통신하고 외부 네트워크에 액세스하기 위한 통신 인터페이스 수단이다.The communication unit 110 is a communication interface means for communicating with an external device and accessing an external network.
프로세서(120)는 적어도 하나의 AE(Application Entitr)와 CSE(Common Service Entity)를 포함한다. 전자 기기의 종류와 기능에 따라서는, AE가 포함되지 않을 수도 있다.The processor 120 includes at least one AE (Application Entitr) and CSE (Common Service Entity). Depending on the type and function of the electronic device, AE may not be included.
프로세서(120)의 위에서 제시한 subscription expiration 관리에 필요한 절차들을 수행하며, 저장부(130)는 프로세서(120)가 subscription expiration 관리를 수행함에 있어 필요한 저장 공간을 제공한다.The procedures required for the subscription expiration management presented above of the processor 120 are performed, and the storage unit 130 provides storage space necessary for the processor 120 to perform subscription expiration management.
기능 블록(140)은 전자 기기 본연의 기능을 수행한다. 이를 테면, 전자 기기가 서버(100-1)인 경우, 사용자 서비스를 제공하는 가상 머신들이 기능 블록(140)에 해당한다.The function block 140 performs a natural function of the electronic device. For example, when the electronic device is the server 100-1, virtual machines providing user services correspond to the function block 140.
한편, 본 실시예에 따른 장치와 방법의 기능을 수행하게 하는 컴퓨터 프로그램을 수록한 컴퓨터로 읽을 수 있는 기록매체에도 본 발명의 기술적 사상이 적용될 수 있음은 물론이다. 또한, 본 발명의 다양한 실시예에 따른 기술적 사상은 컴퓨터로 읽을 수 있는 기록매체에 기록된 컴퓨터로 읽을 수 있는 코드 형태로 구현될 수도 있다. 컴퓨터로 읽을 수 있는 기록매체는 컴퓨터에 의해 읽을 수 있고 데이터를 저장할 수 있는 어떤 데이터 저장 장치이더라도 가능하다. 예를 들어, 컴퓨터로 읽을 수 있는 기록매체는 ROM, RAM, CD-ROM, 자기 테이프, 플로피 디스크, 광디스크, 하드 디스크 드라이브, 등이 될 수 있음은 물론이다. 또한, 컴퓨터로 읽을 수 있는 기록매체에 저장된 컴퓨터로 읽을 수 있는 코드 또는 프로그램은 컴퓨터간에 연결된 네트워크를 통해 전송될 수도 있다.On the other hand, the technical idea of the present invention can be applied to a computer-readable recording medium containing a computer program that performs functions of the apparatus and method according to the present embodiment. Further, the technical idea according to various embodiments of the present invention may be implemented in the form of computer-readable codes recorded on a computer-readable recording medium. The computer-readable recording medium can be any data storage device that can be read by a computer and stores data. Of course, the computer-readable recording medium may be a ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical disk, hard disk drive, and the like. In addition, computer-readable codes or programs stored in a computer-readable recording medium may be transmitted through a network connected between computers.
또한, 이상에서는 본 발명의 바람직한 실시예에 대하여 도시하고 설명하였지만, 본 발명은 상술한 특정의 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진자에 의해 다양한 변형실시가 가능한 것은 물론이고, 이러한 변형실시들은 본 발명의 기술적 사상이나 전망으로부터 개별적으로 이해되어져서는 안될 것이다.In addition, although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. In addition, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical idea or prospect of the present invention.

Claims (8)

  1. subscription 리소스를 생성하는 단계;creating a subscription resource;
    subscription 리소스에 last event timestamp 정보를 저장하는 단계;storing last event timestamp information in a subscription resource;
    last event timestamp 정보를 참조하여, subscription 리소스를 삭제하는 단계;를 포함하는 것을 특징으로 하는 subscription expiration 관리 방법.and deleting the subscription resource by referring to the last event timestamp information.
  2. 청구항 1에 있어서,The method according to claim 1,
    subscription의 event notification criteria를 만족하는 이벤트가 발생하면, last event timestamp를 갱신하는 단계;를 더 포함하는 것을 특징으로 하는 subscription expiration 관리 방법.If an event that satisfies the event notification criteria of the subscription occurs, updating the last event timestamp; subscription expiration management method further comprising.
  3. 청구항 1에 있어서,The method according to claim 1,
    삭제 단계는,The deletion step,
    last event timestamp를 filter criteria로 포함한 discovery를 통해 검색하여 삭제하는 것을 특징으로 하는 subscription expiration 관리 방법.Subscription expiration management method characterized by searching and deleting through discovery including last event timestamp as filter criteria.
  4. 청구항 1에 있어서,The method according to claim 1,
    삭제 단계는,The deletion step,
    expirationTime = last event timestamp + subscription expiration durationexpirationTime = last event timestamp + subscription expiration duration
    위의 expirationTime에 subscription 리소스를 삭제하는 것을 특징으로 하는 subscription expiration 관리 방법.A subscription expiration management method characterized by deleting a subscription resource at the expirationTime above.
  5. 청구항 4에 있어서,The method according to claim 4,
    notification response를 수신하면, subscription 리소스의 expirationTime을 갱신하는 것을 특징으로 하는 subscription expiration 관리 방법.Upon receiving the notification response, the subscription expiration management method characterized by updating the expirationTime of the subscription resource.
  6. 청구항 4에 있어서,The method according to claim 4,
    하위 응용 계층 또는 전송 계층에서 성공적인 notification 전송을 확인하면, subscription 리소스의 expirationTime을 갱신하는 것을 특징으로 하는 subscription expiration 관리 방법.A subscription expiration management method characterized by updating expirationTime of a subscription resource when a successful notification transmission is confirmed by a lower application layer or a transport layer.
  7. 청구항 1에 있어서,The method according to claim 1,
    삭제 단계는,The deletion step,
    애플리케이션이 등록 해제되면, 애플리케이션이 notification을 수신하는 subscription 리소스를 삭제하는 것을 특징으로 하는 subscription expiration 관리 방법.When the application is unregistered, the subscription expiration management method characterized in that the application deletes the subscription resource receiving the notification.
  8. 사용자 디바이스의 애플리케이션과 통신하는 통신부;A communication unit communicating with an application of the user device;
    애플리케이션이 요청한 subscription 리소스를 생성하고, subscription 리소스에 last event timestamp 정보를 저장하며, last event timestamp 정보를 참조하여, subscription 리소스를 삭제하는 프로세서;를 포함하는 것을 특징으로 하는 전자 기기.And a processor that creates a subscription resource requested by an application, stores last event timestamp information in the subscription resource, and deletes the subscription resource by referring to the last event timestamp information.
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