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13.06.2017 Science

A technology for power transfer to far distances via 5G wireless networks is developed at Tomsk Polytechnic University. TPU research team led by Professor Nalin Jayakody considers RF signals as a power source that can be used to charge a smartphone battery. The scientists are also developing a device which will ensure end-to-end connection thus bypassing an intermediate cellular base station.


The research team of Prof. Jayakody including researchers from India and Sri-Lanka works within the TPU Department of Software Engineering.


‘Scientists across the world are working on 5G data transfer technology. First of all, it comes about a higher rate and quality of data transfer compared with the existing technology. However, there is no unified 5G standard and developers are still searching for the best solutions.

The main area of our research team is design and analysis of wireless communication systems and, in particular, RF wireless power transfer at minimal losses to far distances via 5G networks. We developed an algorithm which makes it possible to transfer power from device to device along with RF mobile signals.

That is, when you make a call, electromagnetic waves transmit power from one smartphone to another and this power may be sufficient to recharge your device,’ tells Nalin Jayakody.


According to the scientist, together with their colleagues from the University of Luxemburg, the University of West Ontario (Canada) and the University of Edinburg (UK) the team is currently optimizing the algorithm and tests its efficiency through mathematical modeling. 


‘We set ourselves several objectives. Firstly, we are improving the efficiency of signal transmission, so that the difference between sent and received power will be as minimum as possible,’ points the professor. ‘Secondly, we need to optimize the algorithm in compliance with the existing 5G technology, so that they can operate together. Thirdly, we are working to enhance the frequency bandwidth thus ensuring that the quality of connection is not reduced.’

Another research interest of the team is device-to-device connections. It concerns the development of a device which enables communication thus bypassing a cellular base station as an intermediate.

‘Due to cellular base stations a significant percentage of power is lost. During direct signal transmission a device consumes less power for connection. Now we are developing an algorithm for such device, which for the first time takes into account a lot of parameters: signal strength, channel bandwidth and the distance between two individual users. If the distance between the users is short, the algorithm switches the device to a direct connection channel,’ clarifies Sanjay Biswash, a research fellow of the TPU Department of Software Engineering.


The scientists point out that the development of 5G mobile networks causes sharp issues related to security and privacy of the RF wireless power transfer.


‘This is a challenge which scientists still need to tackle. We plan to improve the security of our algorithms thus making high-speed and high-quality 5G communication and ensuring information security,’ says Professor Nalin Jayakody.  

Today Tomsk Polytechnic University hosts the delegation of Huawei Wireless Research Global. TPU scientists present their developments in the field of 5G networks.



The research team invites young scientists interested in wireless power and data transfer for cooperation. You can send your proposals to Professor Nalin Jayakody to nalin@tpu.ru

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