The paper we consider a model of dynamic pricing in the 5G/6G telecommunications market incomplete competition. We investigate network services pricing in 5G/6G telecommunications with multi-period technology diffusion model. The time path of market demand, prices dynamics, the social surplus and profits companies that implement new telecommunications technologies are determined. The interaction of the users, telecommunication companies and telecommunication services costs for new 5G/6G technologies are studied. Telecommunication industry equilibrium is considered with free market entry and exit. We study optimal multi-period path of the telecommunication companies' profits, which represent the incentive to research and development (RD). We analyze RD expenditure on services and process innovation of 5G/6G technology, assuming a different number of telecommunication companies undertaking RD. We illustrate how multi-period diffusion of 5G/6G technology and RD are interlinked. and copy; 2021 IEEE. © 2021 IEEE Computer Society. All rights reserved.