Abstract
This paper discusses, based on our patent analysis, how a mobile operator in Japan, has developed its core technologies through cooperation with terminal vendors rather than being totally dependent on their technology offerings. NTT DOCOMO's R&D activities focused on the incubation of core technologies and produced more high-value fundamental innovations than other market players as a result. These technologies then flowed over to other operators and vendors, resulting in further technical innovations. To accelerate innovation, NTT DOCOMO established what may be called an ecosystem for innovation with four terminal vendors, namely NEC, Fujitsu, Panasonic Mobile Communications and Mitsubishi Electric. However, the introduction of 3G mobile communications systems in Japan brought about a change in the ecosystem built in the 2G era. To meet a wider variety of consumer needs, the company's R&D shifted from fundamental innovation to application development while it continues to build its technology resources.
