N.A. Yankovskiy1

1 St. Petersburg State University of Aerospace Instrumentation (SUAI) (St. Petersburg, Russia)

Cellular communication systems with a large number of user devices, called machine-to-machine communications, have become widespread these days. The main requirements of the fifth generation communication standard for this type of communication are to ensure low latency and high reliability of data transmission.

To develop a data transmission scheme in the upstream communication channel, which allows to reduce the average delay while maintaining the requirements for transmission reliability.

A data transmission scheme based on network coding was proposed for a two-stage random access algorithm in mass machine-to-machine communication systems. The effectiveness of the proposed solution was tested using simulation modeling. Numerical results show that the use of the proposed scheme makes it possible to significantly reduce the delay in transmitting a message in the uplink for all the considered numbers of user devices in the cell. At the same time, the complication of the decoding procedure allowed for a higher level of reliability of data transmission. Thus, the proposed scheme provides the best key performance indicators put forward by the standard for this type of networks.

The obtained results will help developers of communication systems to plan the deployment of wireless centralized networks in industry.

Yankovskiy N.A. Use of network coding for massive machine type communications. Achievements of modern radioelectronics. 2023. V. 77. № 8. P. 50–57. DOI: https://doi.org/10.18127/j20700784-202308-07 [in Russian]

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