The present invention provides a method for managing transmissions in a wireless communication network (100). The method at a first node (102) of a plurality of nodes of the wireless communication network includes transmitting (304) a data frame to a second node (104) using a first transmit power level. The method further includes determining (306) whether an acknowledgement for the transmitted data frame is received from the second node. Further, the method includes determining (308) a cause of unsuccessful transmission when the acknowledgement is not received from the second node. Moreover, the method includes re-transmitting (310) the data frame to the second node using a second transmit power level when the cause of unsuccessful transmission is determined as a collision. Furthermore, the method includes setting (312) a transmit power level of the first node to a third transmit power level.