| 2016 | HPCC | A Change-Point Detection Scheme Based on Subspace Tracking for Mobile Access Traffic. | Senri Hirabaru, Takahiro Matsuda, Yuki Hirota, Haruki Izumikawa, Hiroshi Hanano, Chihiro Ono, Tetsuya Takine |
| 2013 | WCNC | RoCNet: Spatial mobile data offload with user-behavior prediction through delay tolerant networks. | Haruki Izumikawa, Jiro Katto |
| 2009 | GLOBECOM | RACING: Rate Control for Enhancing Intermittent Networking Performance for Mobile Users. | Haruki Izumikawa, Dirk Kutscher, Andreas Timm-Giel, Carsten Bormann |
| 2009 | WCNC | Novel WLAN coverage area estimation leveraging transition of cellular signal using multi-mode mobile terminal for heterogeneous. | Haruki Izumikawa, Yoji Kishi, Riichiro Nagareda |
| 2007 | PIMRC | User-Centric Seamless Handover Scheme for Realtime Applications. | Haruki Izumikawa, Tadayuki Fukuhara, Takashi Matsunaka, Keizo Sugiyama |
| 2006 | PIMRC | MAP Multiplexing in IEEE 802.16 Mobile Multi-Hop Relay. | Haruki Izumikawa, Kenji Saito, Naoki Fuke, Tetsuro Ueda, Keizo Sugiyama |
| 2006 | PIMRC | An Effective Authentication Procedure Considering User Expiry Time During Handover. | Takashi Matsunaka, Haruki Izumikawa, Keizo Sugiyama |
| 2005 | PIMRC | Proposed relay method with P-MP structure of IEEE 802.16-2004. | Shoji Kaneko, Kenji Saito, Haruki Izumikawa, Takashi Matsunaka, Keizo Sugiyama, Hideyuki Shinonaga |
| 2004 | WCNC | An efficient TCP with explicit handover notification for mobile networks. | Haruki Izumikawa, Ichiro Yamaguchi, Jiro Katto |