1. An apparatus for collaborative location awareness based on weighted maximum likelihood estimation (MLE), comprising: a transceiving unit configured to transmit/receive location awareness information; a location estimating unit configured to perform location estimation of a specific unit block in a network by using weighted MLE on the basis of the location awareness information, the weighted MLE being obtained by applying a weight on the basis of a Cramer-Rao low bound of a neighbor node which is used in the location estimation and the weighted MLE using the weight applied according to whether the location awareness information is received from a reference node or another blind node; a location calculating unit configured to calculate a location of a blind node having an unknown location by using the location awareness information and an estimate of the location estimating unit; and a location awareness unit configured to perform collaborative location awareness between the location-calculated blind node and peripheral nodes and calculate overall locations of the nodes.