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Proxy Mobile IPv6 outperforms previous mobility protocols have been standardized by the Internet Engineering Task Force. However, Proxy Mobile IPv6 still involves the triangle routing problem in where data packets for the mobile node are delivered throughout inefficient routing paths. To address the triangle routing problem, two different Route Optimization schemes proposed that exclude the inefficient routing paths by creating the shortest routing path. In this paper, we proposed Correspondent Information Route Optimization scheme solves the problem by inefficient signaling cost of Dutta's route optimization. Using Correspondent Information for Correspondent binding updates process between the mobile access gateways which are caused by bi-path data communication of the mobile entities of different the mobile access gateway on the same local mobility anchor. The results of signaling cost performance evaluation show that performance of our proposed using correspondent information route optimization scheme is better than Liebsch's route optimization scheme as 45% for mobility of the data packets sender and Dutta's route optimization scheme as 20% for mobility of the data packets sender.