Construction and implementation of teacher support services model under “5G+Smart Education”

Abstract

Abstract With the development of network technology, the convenience and flexibility of smart education have made it right to meet the needs of teachers’ professional development, which has led to its rapid development. As traditional smart campus data networks suffer from long construction periods, high costs, and poor flexibility of wired networks, existing wireless networks may suffer from audio delays, lagging, and other problems. Now with the addition of 5G networks, it is not only able to provide a new design concept and teaching method for modern teaching, but it is also of great significance to improve the comprehensive strength of schools and accelerate the construction and implementation of teacher support service models. In this paper, we investigate URLLC and eMBB multiplexing mechanisms in 5G, introduce the signal space diversity technique based on rotational modulation, and propose SSD-based URLLC and eMBB multiplexing mechanisms. The SSD-based URLLC and eMBB multiplexing mechanisms are validated through downlink-level simulations. The results show that the BER is improved by about 1.0dB at 10-6 orders of magnitude, and the BER is improved by about 1.0dB at 10-3 orders of magnitude under the simulation verification of the Rayleigh channel compared to the case without spatial diversity. In the simulation of the spatial diversity multiplexing mechanism of the TDL-A-1000 channel, the BER is improved by about 1.5dB at 10-6 orders of magnitude, and the BER is also improved by about 1.5dB at 10-3 orders of magnitude compared with the case without spatial diversity. In summary, the SSD-based multiplexing mechanism proposed in this paper can reduce data BER, improve data transmission reliability, and make the construction and implementation of the teacher support services model in smart education faster and more convenient.