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Industrial Technology Research Institute

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Pre-5G Radio Access - NOMA

Technology Overview

Pre-5G Radio Access - NOMA.
Pre-5G Radio Access - NOMA.

To resolve high frequency transmission problems with 5G networks, ITRI and MediaTek are focused on the globally recognized 38/39 GHz band and cooperated to release the world’s first prototype system for 4G+5G dual mode small cells that integrates LTE with the 38/39 GHz mmWave in early 2017.

Applications & Benefits

Prior to the establishment of the 5G standards in 2018, ITRI and MediaTek also co-invested in R&D on Multi-User Superposition Transmission (MUST) technology for supporting the transmission capacity of small cells, in order to implement 5G technologies, including non-orthogonal multiple access (NOMA), multiuser interference cancellation (MUIC), and new radio. With the small cell MUST scheduling technology and field test environment provided by ITRI, functional testing and performance measurements of MUST on MediaTek’s handsets have been completed. Compared with 4G, the network spectrum efficiency can be improved by 10–40% on average, and up to 140% under specific circumstances. Meanwhile, ITRI also holds intellectual property rights on access technology relating to 5G small cells to help Taiwan's manufacturers develop their capabilities in 5G technology and product development, allowing them to enter the market early.