1. 21-12-0058- MuGM 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 (UC3M) Abstract: This document proposes new commands for group management

2. 21-12-0058- MuGM IEEE 802.21 presentation release statements This document has been prepared to assist the IEEE 802.21 Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.21. The contributor is familiar with IEEE patent policy, as outlined in Section 6.3 of the IEEE-SA Standards Board Operations Manual and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/guide.html> Section 6.3 of the IEEE-SA Standards Board Operations Manualhttp://standards.ieee.org/guides/opman/sect6.html#6.3 http://standards.ieee.org/board/pat/guide.html IEEE 802.21 presentation release statements This document has been prepared to assist the IEEE 802.21 Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE ’ s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE ’ s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.21. The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards Board bylaws and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/faq.pdf> Section 6 of the IEEE-SA Standards Board bylawshttp://standards.ieee.org/guides/bylaws/sect6-7.html#6 http://standards.ieee.org/board/pat/faq.pdf

3. PoS Groupcast Control Creating, as well as adding/removing nodes from multicast groups, requires specific signaling The PoS is the core entity for managing MIH Protocol interactions between remote nodes As such, the PoS could also acquire responsibilities regarding multicast group management for 802.21d groupcast

4. PoS 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 PoS, 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 PoS 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)

5. PoS 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.