Fig. 4
From: Hybrid connectivity restoration in wireless sensor and actor networks

Best position for relocating the backup node. a Node C is out of the communication range of A and B. b Node C is within the communication range of A and out of B
From: Hybrid connectivity restoration in wireless sensor and actor networks
Best position for relocating the backup node. a Node C is out of the communication range of A and B. b Node C is within the communication range of A and out of B