The concept of a narrowband network is straightforward: it refers to data transmission that doesn't require high-speed broadband, making it ideal for applications with limited coverage needs. By using NB-IoT networks, data can be transmitted efficiently while significantly reducing power consumption, which makes it the top choice for IoT devices.
With the increasing implementation of IoT-related policies, 2017 marked the first year of large-scale commercial deployment of NB-IoT. The industry is now entering a phase of rapid growth. Among the three major telecom operators in China, China Telecom has taken an early lead in NB-IoT network development. Both China Unicom and China Mobile have plans to complete their NB-IoT network coverage by the end of the year.
**Frequent IoT Policies**
Globally, the Internet of Things is still in its early stages of development, but it has made significant progress in certain areas. From technological innovation to practical applications, the IoT shows great potential. As a comprehensive integration of new information technologies, the IoT demonstrates strong penetration, powerful driving force, and broad benefits.
The State Council has placed great emphasis on IoT development. In recent years, they have issued multiple instructions to promote the orderly and healthy growth of the IoT sector. They have also instructed relevant departments like the National Development and Reform Commission and the Ministry of Industry and Information Technology to develop targeted and actionable policies and measures. These policies are expected to guide and regulate the industry, promoting broader IoT applications and sustainable development.
On June 16, 2017, the Ministry of Industry and Commerce released the “Notice on Comprehensively Promoting the Construction and Development of Mobile Internet of Things (NB-IoT)â€, stating that the number of NB-IoT base stations would reach 400,000 in 2017, supporting over 20 million M2M connections. By 2020, the number of base stations is expected to reach 1.5 million, with more than 600 million total connections.
**NB-IoT Enters Its First Year of Large-Scale Commercialization**
In 2017, NB-IoT officially entered its first year of large-scale commercial use. The Ministry of Industry and Information Technology approved commercial licenses for NB-IoT at frequencies including 900/800/1800/2100MHz. According to the plan, China aims to build 1.5 million NB-IoT base stations by 2020. Each of the three major operators has begun constructing their own NB-IoT commercial networks based on their available resources, marking a period of rapid industry growth.
China Mobile, with its abundant spectrum resources in the GSM900 band (90–909MHz/935–954MHz), has a lot of flexibility in deploying NB-IoT. It is expected that reusing the 900MHz band will be the best option for building NB-IoT networks.
In 2016, China Telecom received approval from the Ministry of Industry and Information Technology to reuse the 800MHz frequency band and quickly launched its re-cultivation project. It began building a high-quality 4G network with rural coverage and deep urban penetration, while also offering NB-IoT services. For China Telecom, 800MHz is the preferred frequency for NB-IoT deployment.
China Unicom, on the other hand, has limited bandwidth in the 900MHz spectrum, which restricts its network expansion. To overcome this, it plans to deploy a dual-band network using 900MHz and 1800MHz.
Among the three major operators, China Telecom currently leads in NB-IoT network construction. As of June 2017, it had completed 800MHz NB-IoT coverage and announced the commercial launch of NB-IoT in several cities. Meanwhile, both China Unicom and China Mobile plan to finish their NB-IoT network coverage by the end of the year.
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