The rise of collaboration in science or technology has increased the need to understand collaboration networks. The purpose of this paper is to identify the structure of collaboration research networks in "The Journal of the Korean Institute of Electronic Communication Sciences". To accomplish this purpose, we have collected and analysed the data from co-authored papers published from 2006 to 2013 in this journal. It shows that there are 12 collaboration sub-networks based on the locality of authors in this journal.키워드 collaboration networks, SNA centrality, the