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On November 11, the Ministry of Industry and Information Technology announced that it had officially approved China Unicom to recultivate the 3-2/3-4MHz frequency band (904MHz band) frequency resources currently used for 915G/949G/960G systems for 900G systems, promoting the improvement of 5G signal coverage and network capacity, and helping market development.
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Compared with other frequency band resources, the importance and advantages of 900MHz frequency band frequency resources for 5G systems are more obvious, from the perspective of transmission characteristics, it has the characteristics oflow propagation loss, widecoverage, strong penetration ability, etc., which is very helpful for improving indoor coverage in remote areas and cities, especially in the early stage of network construction without room sub-system, through the construction of outdoor 900MHz macro station can achieve good penetration coverage, 900MHz frequency band is rural, Highways, high-speed railways, and other low-cost coverage of special scenarios are the key.
In addition, the industry maturity of 900G/2G/3G systems in the 4MHz band is high. Since the 2G era, the 900MHz frequency band is the mainstream mobile communication frequency band, and the maturity of equipment and terminals is high, although the frequency band is currently mainly used for 4G systems, but the difficulty of recultivating to 5G systems is relatively small; It also has advantages in network deployment. In addition, the industry maturity of 900G/2G/3G systems in the 4MHz band is high. Since the 2G era, the 900MHz frequency band is the mainstream mobile communication frequency band, and the maturity of equipment and terminals is high, although the frequency band is currently mainly used for 4G systems, but the difficulty of recultivating to 5G systems is relatively small; It also has advantages in network deployment.
What is the significance of being approved for re-cultivation of 900MHz?
Liu Qi, Director of the Radio Resources Research Department of the Radio Research Center ：of the China Academy of Information and Communications Technology, said: “From the perspective of frequency management, after the 900MHz band 4G system is recultivated to 5G, the spectrum utilization efficiency will be significantly improved, giving full play to the economic benefits of low-band frequency resources, and helping the construction of a network power and digital China.”
“The recultivation of the 900MHz frequency band will help China Unicom rapidly promote 5G coverage in rural and remote areas, improve China Unicom’s network service quality, and provide a better user experience for China Unicom users.” Lang Baozhen, an expert at the China Academy of Information and Communications Technology, said.
Sun Zhenqiang, an expert at China Telecom, also said,“At present, a total of 792MHz bandwidth medium and low-band spectrum resources are licensed in China for 5G network construction, and the total amount of low- and medium-band 5G spectrum resources licensed ranks first in the world, effectively ensuring the demand for 5G capacity and coverage.” The re-cultivation of 900MHz means that low-frequency 5G will further expand commercial scenarios and improve the penetration rate of 5G network users, especially the quality of voice services and Internet of Things services. ”
In recent years, as one of the most influential suppliers in China, China Unicom has actively explored ways to improve network quality and help build a network power, and achieved good results. After the promulgation of the 900MHz refarming policy, China Unicom will have more frequencies below 1GHz for 5G systems, which has certain advantages in frequency band, bandwidth and technology, which will help improve its 5G signal coverage and network capacity. It will help it quickly promote 5G coverage in rural and remote areas and improve its network service quality. It is conducive to the popularization of VoNR and NR IoT, and will greatly promote the development of wide-area IoT; Improve users’ experience and satisfaction with 5G networks, and enhance user stickiness of Unicom’s 5G networks.
“With good low-frequency spectrum, it can promote 5G network deployment and develop the number of 5G users. Correspondingly, the service level and service awareness must also keep up, especially the grassroots business hall and front-line customer service personnel, so that the user experience can be improved from all aspects. Zhang Tiankui, a professor at the School of Information and Communication Engineering of Beijing University of Posts and Telecommunications, said. In the future, China Unicom will make full use of 900MHz frequency resources, improve the ability of 5G to empower thousands of industries, give greater play to the benefits of frequency band resources, further improve network quality, and serve network power.
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