Japan is actively promoting 6G research and development, but lagging behind in 5G may become a stumbling block

News on April 25, 2022, Japan is working hard to promote the research and development of sixth-generation (6G) mobile communication technology, intending to make up for the relative backwardness in 4G and 5G technology. At the same time, some experts pointed out that the development of 6G may face challenges due to Japan's deficiencies in 5G infrastructure construction and service promotion.

In 2020, Japan proposed the "Beyond 5G Promotion Strategy", aiming to lay the foundation for providing beyond 5G communication services before 2030. The strategic plan will gradually establish key technologies starting from 2025. 6G technology is expected to use ultra-high frequency radio waves, but its propagation distance is short and can only propagate in a straight line, so it may require higher base station density, and may even need to be set up on each floor. A base station.

Although the Japanese government is not completely behind in promoting 6G technology, the reality is that the penetration rate and speed of Japan's 5G network are still insufficient. Professor Tomo Marukawa of the Institute of Social Sciences at the University of Tokyo pointed out that even in urban Tokyo, the reception probability of 5G signals is only high to a certain extent, while in the suburbs, 5G signals are almost impossible to receive in many places. In addition, Japanese companies account for only 5% of 5G standard technology, showing that Japan does not occupy a dominant position in the field of 5G technology.

Professor Tomohiro Marukawa further stated that when consumers choose to use 6G, they must be driven by new services and products that are sufficiently attractive to them. If the way 6G is used does not change significantly from the current way of using mobile phones, consumers may choose more economical 5G services. He mentioned that although Japanese companies are now focusing on 6G and hope to gain technological dominance in this field, whether this strategy can succeed is still unknown.

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