“…Since BROF does not transmit probe messages, it is expected that a tree structure can be constructed and maintained with much lower battery power consumption than MRHOF on Contiki-NG. On the other hand, several new OFs [11], [12], [13], [14], [15], [16], [17], [18] are proposed in the literature. Although they take energy consumption into account, some of them do not consider reducing the number of control messages and some of them rely on nonstandard MAC protocol called ContikiMAC [19].…”