1. Aggregation of notification
Group Name: WG2
Source: Jiaxin Yin, Huawei Technologies Co., Ltd.,
Meeting Date:
Agenda Item: TBD

2. Subscribe to quite a lot of resources
If the subscriber is a resource constrained application, it doesn’t want to maintain hundreds of subscription/notification relationship simultaneously.
So it decided to subscribe through group. (Next page)
Subscriber ……
Member Hosting CSE
Member Hosting CSE
Member Hosting CSE
Member Hosting CSE

3. subscribe via group Group Hosting CSE
The subscriber created resource subscription in each of the member hosting CSEs. The subscriber still need to handle hundreds of individual notifications from each member hosting CSE. But I’m so constraint that I can’t always handle those number of notifications.
What if some body can help me collect all those scattered notifications and give me a package? (Next page)
Subscriber
Group Hosting CSE ……
Member Hosting CSE
Member Hosting CSE
Member Hosting CSE
Member Hosting CSE

4. aggregate notifications by group
Group Hosting CSE aggregates the notifications from members.
Subscriber
Group Hosting CSE ……
Member Hosting CSE
Member Hosting CSE
Member Hosting CSE
Member Hosting CSE

5. Group hosting CSE will then:
Originator can indicate the group to aggregate the notifications by include the attribute “aggregationURI” in the subscription resource.
Group hosting CSE will then:
assign an value to the aggregationURI attribute before fanning out
maintain the mapping of the assigned aggregationURI and the former aggregationURI if there is any

6. Procedure for subscription
fan out the request
aggregationURI:
notificationURI: ③
Member Hosting CSE
Send the request
aggregationURI:
notificationURI: ①
Member Hosting CSE
Member Hosting CSE
Originator
Group Hosting CSE
Member Hosting CSE ②
generate aggregationURI_1
and maintain the mapping of: ④
generate aggregationURI_2 and maintain the mapping of:
aggregationURI_1
aggregationURI_2
notificationURI
aggregationURI_1
Group Hosting CSE
aggregationURI:
notificationURI: ⑤
Member Hosting CSE
Member Hosting CSE

7. Procedure for notification
Member Hosting CSE
Member Hosting CSE ③
Member Hosting CSE
Originator
Group Hosting CSE
Notify to notificationURI ②
Member Hosting CSE
Notify to aggregationURI_1
notificationURI
aggregationURI_1
aggregationURI_1
aggregationURI_2
Group Hosting CSE ①
Notify to aggregationURI_2
Member Hosting CSE
Member Hosting CSE