Some of them have proposed speciic nodes which are called Station Nodes [2]. Sensor nodes mainly use the broadcast communication paradigm, whereas most ad hoc networks are based on point-to-point communication. Fixed node receives the mobile node's position information and registers them when it moves to its radios range. Sensor nodes determine their locations as the center of the field after receiving data from four stations which are coordinated on the edge of the field. Then the BS sends a broadcast message that contains the probability for the nodes to become the cluster head in the next round.
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