Industrial development, standards first. With the joint efforts of the industry, 3GPP technology was officially accepted as ITU imt-2020 5g technical standard on July 9, including 3GPP NR + Nb IOT RIT submitted by China, 3GPP NR RIT submitted by Korea, and NR + LTE sprint and NR RIT submitted by 3GPP. This also means that Nb IOT, led by China’s industrial chain, has been widely recognized and supported by the global industrial chain and has become an important part of 5g construction.

Through the wind and waves, Nb IOT technology was officially incorporated into 5g standard system

As an early wide area low-power Internet of things technology, Nb IOT technology has been widely supported by global mainstream operators and communication equipment manufacturers because of its characteristics of “large connection, wide coverage, low cost and low power consumption”.

From the perspective of standard evolution, Nb IOT technology has been following the development of communication technology standards. In May 2014, Huawei and Vodafone proposed lte-m / nb-m2m; In September 2015, at the 69th ran plenary session of 3GPP, the leaders of each scheme integrated the two technical specifications of “nb-ciot” and “nb-lte” into NB IOT for project approval; In June 2016, 3GPP frozen the first NB IOT standard in R13 agreement; In the subsequent R14 protocol, 3GPP defines the Nb IOT performance enhancement feature; 3GPP proposes the coexistence deployment scheme of supporting NR and Nb IOT in R15 protocol to ensure that the existing NB IOT terminal services will not be affected after 5g deployment; Today, 5g standard pattern has been formed, and Nb IOT has officially become 5g standard.

According to the data, Nb IOT has developed rapidly in four years since the standardization work was completed for the first time in 2016. By the end of 2019, more than 700000 NB IOT base stations have been built in China, realizing continuous coverage in major cities and towns and above, laying a good network foundation for the development of various applications.

Yang Guang, senior analyst of SA, said: “NB IOT has made great progress in industrialization after being incorporated into 3GPP 4G standard system. Now it is incorporated into 5g standard system, which is another important development node.”

NB IOT technology lays the foundation for 5g industrial ecology

2G network withdrawal “catalyzes” the outbreak of Nb IOT industry

Many practitioners once believed that the biggest resistance to the development of Nb IOT is 2G network. NB IOT has a “game” and “substitution” relationship with 2G network in certain application scenarios. NB IOT has a long way to go to complete the task of replacing 2G network.

Why is 2G compared with Nb IOT instead of LTE, EMTC, Lora and other technologies? Investigate the reason, Yang Guang said that compared with LTE or EMTC, Nb IOT is a new design for Internet of things applications, which can meet the needs of most low data rate Internet of things applications in a more effective and economical way. Compared with Lora technology using unauthorized frequency band, Nb IOT has significant advantages in the perfection of industrial chain and large-scale networking capability.

Nowadays, 2G withdrawal is the general trend. Judging from the working process of 2G / 3G network frequency clearing and network withdrawal of the three major operators, closing 2G network has long become the consensus of the industry. In 2017, China Telecom began to re plough the 800MHz frequency band covering 2G / 3G, converting the 800MHz frequency band to 4G, Internet of things and other uses. The next year, China Telecom issued new regulations that China Telecom will stop warehousing 2G and 3G mobile terminals from October 1, 2018; The 5g terminal product guidelines issued by China Mobile in 2018 pointed out that terminals are no longer required to support TD-SCDMA. In addition, recently, in the internal notice of the Ministry of planning and construction of China Mobile on the construction scale of Nb IOT network in 2020, it was clearly proposed that China Mobile will stop adding 2G Internet of things users by the end of 2020; China Unicom officially announced on its official microblog in April 2018 that it would orderly promote 2G network frequency reduction.

In addition to a series of measures taken by operators to withdraw and build networks, China has actively promoted the construction of Nb IOT from policies for many times. For example, on May 7, 2020, the notice of the general office of the Ministry of industry and information technology on further promoting the all-round development of the mobile Internet of things clearly pointed out that by the end of 2020, Nb IOT network will achieve universal coverage in the main urban areas of cities above the county level and in-depth coverage in key areas; The number of mobile Internet of things connections reached 1.2 billion; Promote the convergence of Nb IOT module price and 2G module, and guide the migration of new IOT terminals to NB IOT and lte-cat1; Create a number of Nb IOT application benchmarking projects and Nb IOT million connection scale application scenarios.

It can be seen that under the background of 2G withdrawal, Nb IOT industry will usher in a growth period in combination with its own technical advantages and industrial promotion. “NB IOT has entered the track of sound development. We expect that the average annual compound growth rate of Nb IOT equipment sales will reach 34% from 2018 to 2025, which is much higher than other IOT technologies,” said Yang Guang.

NB IOT lays the foundation for 5g industrial ecology

As we all know, the rapid scale application of Nb IOT in the Chinese market is the most important basis for NB IOT to achieve global development. This is not only due to the high attention and positive promotion of industry authorities and operators, but also due to the continuous efforts made by the domestic communication industry in the development of Nb IOT technology, which has laid a solid foundation for the rapid maturity and scale development of Nb IOT.

NB IOT has officially become the 5g standard, which will undoubtedly have a far-reaching impact on the whole industry. We can analyze it from the following four aspects.

First, the three business scenarios of 5g are supported by standards. According to the requirements of ITU for the next generation mobile communication network, 5g not only needs to support enhanced mobile communication (embB), low delay and high reliability (urllc), but also needs to meet the scenario of massive Internet of things connection (mmtc). The 3GPP NR + Nb IOT RIT submitted and approved by China can meet the scenario requirements of 5g. NR aims at embB and urllc scenes, and Nb IOT aims at mmtc scenes.

Second, unify the development route of Internet of things technology. In terms of industrial ecology, Nb IOT industry has 9 chip manufacturers including Huawei Hisilicon, Qualcomm and ZTE microelectronics, and 21 NB IOT module manufacturers including ZTE, Shanghai mobile communication and China Mobile Internet of things. A variety of products have been issued this year, enriching the diversity of modules. In addition, the price of Nb IOT module is similar to that of 2G module, which promotes the ecological development of Nb IOT industry. Now NB IOT has been incorporated into the 5g standard system, unifying the product technology development route, effectively solving the compatibility problems of various versions, and laying the foundation for 5g development.

Third, Nb IOT has become the pioneer of 5g. Miao Wei, Minister of the Ministry of industry and information technology, once said: “80% of 5g is used for the connection between things.” among many Internet of things connection technologies, Nb IOT has been positioned for the communication between things since its birth. It has been widely used in the fields of intelligent door lock, intelligent smoke, intelligent parking and intelligent wear. In recent years, it has improved, optimized and even changed the production and operation of some industries, Become the “stepping stone” to realize digital transformation. According to statistics, by the end of last year, the number of mobile Internet of things connections in China had exceeded 1 billion, of which the number of Nb IOT connections had exceeded 100 million. It is worth mentioning that in this year’s epidemic prevention and anti epidemic work, Wuhan huoshenshan hospital also adopted NB IOT smoke detector. IOT analytics predicts that by 2025, the number of active IOT devices in the world will reach 22 billion.

Fourth, ensure long-term investment and inject more confidence into the industry. Industry experts believe that operators’ investment in NB IOT network actually constitutes a part of 5g investment, which is a long-term investment for the future. For example, in the application scenarios such as meter, smoke detector, street lamp, fire hydrant and asset tracking, due to the scattered distribution of equipment and the high cost of replacing the battery, the battery life cycle is required to reach 5 ~ 10 years, and then the manufacturer is required to select a future oriented and long-term operation technology. At the same time, under the background of 2G network frequency reduction and de networking, Nb IOT has been officially incorporated into 5g standard from the clear points of government and operator policies, which further dispels the concerns of the industrial chain and defines the evolution direction for the long-term development of the industry.

As Yang Guang said: “On the one hand, Nb IOT’s entry into the 5g standard system paves the way for its continuous evolution and development in the future, helps to further strengthen the confidence of the upstream and downstream of the industrial chain and make plans for longer-term market and technology development. On the other hand, Nb IOT’s entry into the 5g standard system also helps 3GPP 5g NR technology meet the comprehensive requirements of ITU for 5g system capability and make 5g NR a 5g standard candidate The selected technology has been successfully recognized by ITU, which is also of great significance to the global development of 5g. “

      Editor in charge: Tzh

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