Due to increasing number of cores, the placement of the cores onto NoC platform has become an important issue. If we can map the application cores close to each other to place them with more communication requirements, the performance parameters will improve and the network will be more efficient. In this paper, we propose a low complexity heuristic algorithm for the application mapping onto NoC to improve latency. In addition, one approach has been proposed to extract an Abstract graph from an application core graph, so, using this resent approach, we can map applications in proposed algorithm. Proposed algorithm and previous papers were compared on two real applications VOPD and MPEG-4 and results were reported.