Kenichiro Matsumoto is Senior Manager of Network Architecture Group in Core Network Development Department of NTT DOCOMO since July 2017. In his current position, he is responsible for future 5G core network architecture which can flexibly enable various new services. Before joining to NTT DOCOMO, he worked for NTT Network Service Systems Laboratories of NTT Corporation as a research engineer for more than 20 years. He contributed to several network system developments such as SIP server for the Next Generation Network of NTT group. Besides network system developments, he joined B-ISDN standardization activity at Study Group 11 in ITU-T. He also worked for Technology Planning Department of NTT Corporation from 2011 to 2013.