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Group multicast Group Name: ARC

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Presentation on theme: "Group multicast Group Name: ARC"— Presentation transcript:

1 Group multicast Group Name: ARC
Source: Jiaxin Yin, Huawei Technologies Co., Ltd. Meeting Date: Agenda Item: TBD

2 Background oneM2M does not support the utilizing multicast capability from the underlying network if supported. The underlying network could be 3GPP network or binding protocols like CoAP etc. The discussion is to kick off the question how to support multicast group by oneM2M? The contribution is the presentation show for ARC group_multicast

3 Multicast Group case1 None of the group member have multicast capability, the same as before: not multicast group Group create request CSE Check Multicast capability one by one ASN1 ASN2 ASN3 ASN4 ASN5 One Group, no multicast group

4 Subgroup management case2
All the group member have the same multicast capability: eg.3GPP MBMS, there is one subgroup. Group create request CSE Check Multicast capability one by one ASN1 ASN2 ASN3 ASN4 ASN5 One multicast Group: 3GPP MBMS group

5 Subgroup management case3
Part of the group member have multicast capability：eg.3GPP MBMS; the others do not. Group create request CSE Check Multicast Capability one by one ASN1 ASN2 ASN3 ASN4 ASN5 One multicast group：3GPP MBMS multicast group

6 Subgroup management case4
Some of the group member have multicast capability：eg. 3GPP MBMS; the others have the IP multicast capability. Group create request CSE Check Multicast Capability one by one ASN1 ASN2 ASN3 ASN4 ASN5 Multicast group 1：3GPP MBMS multicast Multicast group 2：IP multicast

7 Resource structure Group The <multicastGroup> resource is for the multicast of the group members. The multicastGroup contains a subset of the group members that belongs to one network and same multicast capability segment. multicastGroup multicastType multicastAddress memberList CSEbase fanOutURI parentGroup The <ParentGroup> resource is to indicate that if the CSE is part of a multicast group. multicastAddress memberList fanOutURI responseURI

8 Group create procedure
AE IN-CSE ASN1 ASN2 ASN3 ASN4 ASN5 Create group Determines that ASN1,2,3 belongs to the same multicast group Allocate multicastAddress and fanOutURI Create multicast Try to add itself into the multicast group success success

9 Group fanout procedure
AE IN-CSE SCEF MulticastServer ASN1 ASN2 ASN3 Address fanout Req Check the multicast group type Case A: multicastType = 3GPP MBMS Group message delivery using MBMS defined TS23682 Case B: multicastType = IP Multicast Send fanout message to the multiCastAddress Multicast using using the mapping between fanOutURI and memberIDs Success Rsp Aggregate the member responses Success Rsp

10 Questions and comments

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