IEEE 802 21 MEDIA INDEPENDENT HANDOVER DCN Title

IEEE 802. 21 MEDIA INDEPENDENT HANDOVER DCN: Title: Group management mechanisms Date Submitted: November, 2012 Authors or Source(s): Daniel Corujo (ITAv), Antonio de la Oliva (UC 3 M) Abstract: This document proposes new commands for group management 21 -12 -0058 - Mu. GM

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Po. S Groupcast Control • Creating, as well as adding/removing nodes from multicast groups, requires specific signaling • The Po. S is the core entity for managing MIH Protocol interactions between remote nodes • As such, the Po. S could also acquire responsibilities regarding multicast group management for 802. 21 d groupcast

Po. S Groupcast Control • Proposal A: to enhance the existing 802. 21 command set with group management primitives • Features: – The request primitive would features parameters to indicate: • Multicast MIHF ID of the target group • Parameter for indicating the action to be done – Add Node to Group – Remove Node from Group – Create New Group – The response primitive would relay, back to the Po. S, the outcome of these messages, by the individual nodes affected by it – This message would also re-utilize the normal MIH Protocol unicast destination procedure, allowing the Po. S to send different per-node messages to specific 802. 21 -enabled nodes, using each unique MIHF_ID as destination – Possibility of sending also multicast messages to all nodes with a list of operations to be performed (e. g. , joining groups per node)

Po. S Groupcast Control – Other approach • Proposal B: to enhance the existing 802. 21 command set with group management primitives, but reutilizing current 802. 21 broadcast mechanisms • Features: – The request primitive would features parameters to indicate: • Multicast MIHF ID of the target group • Parameter for indicating the action to be done – Add Node to Group – Remove Node from Group – Create New Group • The zero-length MIHF ID is sued as destination, allowing a single message to reach all MIH-enabled nodes in broadcast range • Different per-node 802. 21 -multicast node attribution can be achieved by providing a list-parameter indicating the target group per node – The source MIHF is not able to discriminate the messages by MIHF_ID, requires to parse the complete message.