The 230MHz band wireless data transmission system finds extensive application in sectors such as electricity, gas, and water.

This system typically refers to a wireless data transmission solution that employs time division duplex (TDD) to aggregate multiple discrete carriers within the 230MHz frequency band, optimizing bandwidth utilization.

Data transmission encompasses various forms, including wired transmission, wireless public network transmission, and wireless private network transmission. Wired transmission incurs high costs, while wireless public network transmission often lacks security. Consequently, wireless private network transmission has garnered significant attention. According to the 2025-2030 China 230MHz Band Wireless Data Transmission System Industry Market In-depth Research and Development Prospects Forecast Report published by the SSIRC (New Thinking Industry Research Center), the 230MHz band, with an operating frequency range of 223-235MHz, serves as a dedicated wireless private network band for specific sectors. It offers high-reliability and high-security wireless data transmission services tailored to specific user groups, boasting long transmission distances and robust penetration capabilities. This system is ideally suited for industries like electricity, gas, and water.

In August 2018, the Ministry of Industry and Information Technology issued the Notice on Adjusting the Frequency Usage Plan for the 223-235MHz Band Wireless Data Transmission System, advocating the use of this frequency band for wireless data transmission systems leveraging TDD carrier aggregation and dynamic spectrum sharing technology. On February 1, 2024, the National Development and Reform Commission revised and issued the updated Guidance Catalogue for Industrial Restructuring (2024 Edition), which includes, under the encouraged category of the information industry sector, next-generation private network communication equipment such as 230MHz band broadband wireless data transmission devices utilizing TDD carrier aggregation.

Specifically, Time Division Duplex (TDD) segregates receive and transmit channels, enabling efficient bandwidth utilization and flexible allocation of uplink and downlink capacities with excellent frequency consistency. Carrier Aggregation (CA) can consolidate 2-5 LTE component carriers, thereby expanding the transmission bandwidth of the communication system and enhancing uplink and downlink transmission rates. Therefore, the 230MHz band wireless data transmission system that integrates carrier aggregation with time division duplex boasts high data transmission efficiency, spectral flexibility, and cost-effectiveness. It is particularly well-suited for scenarios demanding high transmission speeds and stability, such as the Internet of Things, smart cities, industrial automation, and other fields.

Devices utilized in the 230MHz band wireless data transmission system adhere to technical standards regarding parameters like frequency tolerance, frequency range, operating bandwidth, occupied bandwidth, and transmit power. In terms of power, micro-power devices support narrowband data transmission and are typically used for short-range wireless communication within buildings, with a transmit power not exceeding 10mW. Conversely, high-power devices support broadband data transmission and are primarily deployed in wide area networks, with a transmit power not exceeding 50W. SSIRC industry analysts revealed that as early as 2016, China's Ministry of Industry and Information Technology approved three aggregated test networks based on the 230MHz band for State Grid in Haiyan, Zhejiang, Jinjiang, Fujian, and Potevio in Wulong, Chongqing. All three networks successfully completed acceptance in 2017. Since then, the construction scale of the 230MHz band wireless data transmission system in China has continued to expand, driven by favorable national policies, indicating promising development prospects for the industry.

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