Patent ID: 11888824
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. The apparatus of claim 11, wherein the actions further comprise:
obtaining, by the first member, a key package associated with a second local group;
associating, by the first member, the second local group with an empty PG leaf node of the PG tree or a new PG leaf node of the PG tree;
updating, by the first member, the PG nodes along the second path of the first local group associated with the first member;
notifying, by the first member and after said updating the PG nodes, the members of the first local group and the at least one other local group to update the public group; and
notifying, by the first member and after said updating the PG nodes, one or more members of the second local group to join the public group.