IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-14-0053-00-MuGM Title: Proposal of amending group manipulation commands Date Submitted: Mar, 19, 2014 Presented at IEEE 802.21 session #61 in Beijing Authors or Source(s):  Yoshikazu Hanatani, Toru Kambayashi, (Toshiba) Abstract: 21-14-0053-00-MuGM

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Advantage Previous MIH group manipulate commands indicate new group members by complete subtree. We can reduce their data size by using two type of indication methods. Indicate group members by complete subtree. (The current command) Indicate non-group members by complete subtree. 21-14-0053-00-MuGM

Flow Diagram: Generate Complete Subtree Input : Group Management Tree, MIHF IDs of the group members We will present examples of the condition by below slide. MIHF IDs satisfy a condition? Yes Generate Complete subtree of the complement set of the MIHF IDs Generate Complete subtree of the MIHF IDs Set Complement = 0 Set Complement = 1 Output: Complement, CompleteSubtree fragments, SubgroupRange 21-14-0053-00-MuGM

Flow Diagram: Process Complete Subtree TLV Input : Group Management Tree, Leaf ID, Complement, CompleteSubtree Complement = 0 Yes Is Leaf ID covered by Complete subtree? Is Leaf ID covered by Complete subtree? Yes Yes Go to Step [join] or [stay] Go to Step [Leave] 21-14-0053-00-MuGM

Examples of the condition Result of comparing data sizes of two complete subtrees CompleteSubtree of group member CompleteSubtree of non-group member Choose smaller one. The number of new group member The number of all members managed by the group management tree The number of new group members < 2 21-14-0053-00-MuGM

Change requests Define a data type of Complement in Table F.24 and Type Values for TLV encoding in Table L.2 Add Complement field to following primitives 7.4.31.3 MIH_MN_Group_Mnipulate.response 7.4.32.1 MIH_Net_Group_Manipulate.request Add Complement field to following messages 8.6.1.22 MIH_MN_Group_Manipulate response 8.6.1.23 MIH_Net_Group_Manipulate request 8.6.1.24 MIH_Net_Group_Manipulate indication Add flow diagram in p.4 and explanation texts to 9.4.3.1.1. Add explanation texts to 9.4.3.1.2. Add flow diagram in p.5 and explanation texts to 9.4.3.2. 21-14-0053-00-MuGM