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Standards for M2M and the Internet of Things

Shane HE Bio

Shane He

Dr. Shane HE is a standardization professional specialist at Nokia (Bell Labs & CTO). She is concentrating on IoT standardization and vertical industries, her interests include 5G, IoT/M2M architecture, lightweight protocols, information models and applications, as well as verticals (Industrial IoT, Smart Cities, Automotive).

She participates in several M2M/IoT industry standards bodies, especially in oneM2M, ITU-T and ETSI. She is currently serving as the Chair of oneM2M Requirements & Domain Models (RDM) Working Group. She is also actively involved in ITU-T SG20 as the Rapporteur of Q3/20 (IoT Architectures, management, protocols and QoS).

oneM2M Industry Day in India

TR-0057 Data Collection Principles - ACP

Access Control Policy

  • Access Control Policies (ACPs) are used by the CSE to control access to the resources.

  • The resources are always linked to Access Control Policies. ACPs are shared between several resources

  • Access Control Policies contain the rules (Privileges) defining:

    • WHO can access the Resource (e.g. Identifiers of authorized AE/CSE).

    • For WHAT operation (CREATE / RETRIEVE / UPDATE / DELETE…).

    • Under WHICH contextual circumstances (Time, Location, IP address).

  • ACPs are represented by <accessControlPolicy> resources.

    • Comprised of attributes privileges and selfPrivileges that represent a set of access control rules for entities.

 

<accessControlPolicy> resource content:

acp

 

Signification

  • acr = « Access Control Rule »

  • acor = « Access Control Originators »

  • acop = « Access Control Operations »

 

Operation Code

Combinations of these values are specified by adding them together. For example the value 5 is interpreted as "CREATE and UPDATE".

  • CREATE 1

  • RETRIEVE 2

  • UPDATE 4

  • DELETE 8

  • NOTIFY 16

  • DISCOVERY 32

 

Example:

acp example

 

  • Common attribute accessControlPolicyIDs link resources that are not <accessControlPolicy> resources to <accessControlPolicy> resources.

    • All resources are accessible only if the privileges from the ACP grants it.

    • All resources have an associated accessControlPolicyIDs attribute, either explicitly or implicitly.

    ACP verificationDiscovery example

TR-0057 Data Collection Principles - Container

Container

  • Container for data instances is represented by the <container> resource.

    • Data storage used to share information with other entities and track data.

  • <container> resource has no associated content.

    • Only attributes and child resources are available.

    • Actual data/content is stored in <contentInstance> child resource.

  • <container>  is the only resource allowed to have recursive child resources.

    • <container> resource can have other <container> as  child resources.

    • useful for representing hierarchical data structure.

     
     containerExample of resources tree

 

TR-0057 Data Collection Principles - Subscription and Notification

Subscription and Notification

  • Events generated by resources can be received using the <subscription> resource.

  • The <subscription> resource contains subscription information for its "subscribed-to" resource.

    • <subscription> resource is a child resource of the "subscribed-to" resource.

  • The originator (resource subscriber) has RETRIEVE privileges to the "subscribed-to" resource in order to create the <subscription> resource.

  • Notification policies specified in the attributes can be applied to the <subscription>.

    • Specify which, when, and how notifications are sent.

    • Example: batchNotify – receive batches of notification rather than one at a time.

     

subscription

Subcription and notification example

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