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The forth step is dynamic update and maintenance of cluster structure. It can be mainly divided into the maintenance of cluster head and cluster member.
For cluster heads, The backup head listen for hello messages sent by current head. If the backup head fails to receive hello message from current head three times, it takes over as the new head.
For cluster members, the cluster head listen for hello messages sent by members. If the head fails to receive hello message from a specific member three times, it removes this member from the member list.
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IEEE/ICACT20250172 Slide.12
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