1. Usage Scenarios for CSE Group Name: WG2(ARC-WG) Source: Shingo Fujimoto,FUJITSU,shingo_fujimoto@jp.fujitsu.com Meeting Date: 2013-09-19 Agenda Item: Message Flow

2. Introduction We are going to start describing ‘Message Flows’ following proposed template But describing each resource behavior seems difficult to understand how multiple CSFs are working behind scenes

3. Potential Issue WG2 members identifies potential overwraps and dependencies among CSFs But, Message Flows for each CSF does not covers interaction between CSFs

4. Example of CSF dependencies (from Detail Description for DMR CSF) The DMR CSF shall support transfer of data to/from the AEs, other CSFs and remote CSEs. The DMR CSF shall support transfer of data regardless of the peer entity being on-line or not. The DMR CSF shall support operations such as Create, Read, Update and Delete. The DMR CSF may associate event categorization (e.g., normal, urgent) with the data for supporting differentiated services. External entities such as AFs, other CSFs or remote CSEs shall be able to be granted access to the data in the DMR CSF based on defined policies. (from Detail Description for CMDH CSF) The services that other CSFs, AFs or NSFs can request from the CMDH CSF is to transport some given data to a specific target (CSE, AF or NSF), according to specific delivery instructions while staying within the constraints of provisioned communication management and delivery handling Policies. (from Detail Description for NSE CSF) The NSE CSF shall provide to the CMDH CSF information related to the Underlying Network so the CMDH CSF can include them to determine proper communication handling.

5. Proposal Assign volunteers to work on particular usage scenario (ex. Data Storing, Getting Data, Change Device Setting, Deploy New Device, …) Define set of typical usage scenarios which are derived from most simplest one Build ‘Message Flows’ which is involved related CSFs based on usage scenarios (optional)

6. Example of usage scenarios 1.Storing data from remote Device 1.Remote Device is online (Basic) 1.CMDH CSF on remote device (sender CSE) triggers scheduled data upload to store data (described as policy) 2.CMDH CSF(sender) gets information about Underlying Network from NSE CSF to reach the receiver CSE 3.CMDH CSF(sender) connects to the receiver CSE 4.Security CSF(receiver) authenticates the sender CSE to allow uploading data 5.CMDH CSF(sender) transfers data to DMR CSF(receiver) 2.Remote Device is offline (Alternate-1) 3.…

7. What we can get ? We can identify overwrap and dependency with functionality of other CSFs We can also determine which functionality should be exposed to other CSEs