The Finnish company revealed its deal with the Japanese telecom firm - which includes almost half of the country's mobile subscribers - on Friday (19.01.18), just a month after the global New Radio (NR) standards for the fifth generation of networks was finalised.
It is the company's first big deal for the mobile base station equipment, and while financial terms have not been revealed, Nokia has said DoCoMo would start their 5G network service in time for the Tokyo Olympics in 2020.
While installations are initially expected to take place in Tokyo, a national roll-out will likely follow over the next few years.
The two companies have been working together since at least 2014 as they looked into 5G equipment, which would promise greater capacity, quicker response times and much faster rates of data.
The antennas and base stations will act as local connections between users with any operator's network.
The technology will also allow DoCoMo the opportunity to provide services for industrial automation, smarter homes and autonomous driving through wireless links to potentially billions of sensors.
Meanwhile, Nokia has said it will collaborate with the company to make sure the transition from 4G networks is a smooth one.