Japanese mobile communications giant NTT DoCoMo executives explained the company's recently announced 5G roadmap.
According Takehiro Nakamura, vice president of the company recently disclosed in a public occasion, DoCoMo's 5G development plan is divided into two stages: 5G and 5G +, the commercial service is expected to be launched in 2020. Before the development goals with the company, DoCoMo's initial work will focus on LTE evolution and deployment of new wireless access technologies. "I believe that the difficulties in 2020 using a high frequency band is relatively large, so our main goal is to use the bands below 6GHz." He said the use of bands below 6GHz facing some difficulties, you can use less band. "If we do not have enough frequencies available, you have to consider the use of non-licensed spectrum, and explore the possibility of LAA with technology." After 2020, as more allocation of new frequency bands, DoCoMo will consider the development of 5G +, expected in 2022 - After 2023 there will be a full line of 5G business market.
Nakamura said, in order to maintain the progress of the goal, DoCoMo will begin early standards development work. Previously, the timetable established by the International Telecommunication Union Standardization Bureau to submit by the end of 2019 standards. "We hope that at the latest by the end of 2018 to have a relatively stable standards. Our most fundamental requirement is mobile broadband, therefore 5G standards development work we will mainly focus on high data rates and high capacity. After that we will look at other aspects such as low delay and other. "
DoCoMo is one of the world's 5G operators earlier in the study, from 2010, started the research about the concept and the candidate 5G technology. Since then, DoCoMo is committed to contribute to global pre-5G-related standardization alliances and initiatives to promote the concept of candidate technologies and 5G technology deployment. To date, the company has been with Ericsson, Fujitsu, NEC, Nokia, Samsung, China Mobile, Korea Telecom and other enterprises to establish a cooperative research and development 5G. Late last year, the company also set up a laboratory 5G, recruiting 50 staff.