ICCE-TW ( IEEE International Conference on Consumer Electronics -Taiwan) was held from 20th to 22th May in Yilan, Taiwan, and Mr. Okamura (M2) made his research presentation entitled “Opportunistic Routing for Heterogeneous IoT Networks”. This presentation gives a novel routing protocol for large-scale IoT networks which is required to use multi-hop technology for mutual communication and focused on SSGW (Solution Specific Gateway)-based network. Through the presentation and the discussion, we have obtained some issues to be addressed as the future works.