According to the Research and Development Center of the Internet of Things of the Chinese Academy of Sciences, the total revenue of the domestic Internet of Things industry in 2016 will exceed one trillion yuan. The proportion of IoT technology used in the industry has been increasing year by year, infiltrating application industries such as manufacturing, transportation and logistics, healthcare, consumer electronics, retail, and automotive. The age of all things is entering our life with extremely rapid pace. In the future, NB-IoT will shine in the carrier-class network, bringing broad coverage, big connection and low-cost network solutions for the Internet of Things era.
NB-IoT (NB-IoT) is an emerging technology for cellular-based narrowband IoT in the IoT area that supports cellular data connections over low-power devices over wide area networks. It is also known as Low-Power Wide Area Network LPWA). Its main features are wide coverage, more connections, low rate, low cost, low power consumption, superior architecture.
NB-IOT technology and application scenarios
NB-IOT application scenario
At present, IoT solutions provided by manufacturers mainly focus on applications in smart cities and industrial Internet of Things.
Smart City
The most important thing to achieve a smart city is the IoT communication coverage. With the NB-IoT standard, it is easy to form a scale effect by relying on carriers' experience in building large networks across the country. An important feature of NB-IoT is overwriting Depth deeper, basements and parking lots can also cover the various problems in the industry before the application is solved, NB-IoT's challenge is that operators need to match the traffic management mode and reconstruction. LPWAN technology based on unlicensed frequencies focuses on massive low-rate and low-traffic services, such as LoRA technology, which is very similar in technology to NB-IoT, that is, frequency resources are different, LoRa technology develops earlier than NB-IoT, and the industry chain Also more mature, there are many application cases. For now, LPWAN technology is ideal for enabling access to objects in cost-sensitive small-to-medium-scale scenarios. Cellular technology is suitable for enabling access with a certain amount of traffic and access to QOS (for example, large-scale enterprise customers or home scenarios ), The future may be gradual integration of the two technologies, mixed network.
Industrial Internet of Things
The Industrial Internet consists of a large number of connected industrial systems that communicate with each other and coordinate data analysis and actions to help improve industrial performance. The industrial internet of things has strict performance and reliability requirements. At this stage, the industrial control systems represented by Siemens are all wired systems. The factories have gradually begun to apply the wireless connection technology to products or production lines in order to improve the manufacturing process. At present, the wireless connection technology like WiFi is not secure enough and the reliability is not high enough. The determination of NB-IoT standard provides a technical solution for the industrial Internet of Things wireless connection.
Future converged communications is a major trend in the Internet of things
From the point of view of business and network deployment, large-scale IoT usually includes four levels of perception, access, network and platform. In the access layer, diversified access modes are required because of the diverse deployment scenarios of the IoT terminals, including wired and wireless access methods, and short and wide area access such as Ethernet, WIFI, PON , Power line carrier, NB-IoT, LTE-M, Pre-5G MUSA and 5G and other technologies. Future IOT link mode is surely a variety of communication coexist converged communication, each communication technology has its own advantages and disadvantages, the basic will have their own niche market, such as the current meter market, the main way to power line carrier communication, and From narrowband low-speed to narrowband high-speed broadband and broadband low-speed high-speed communications technology evolution, from one-way transmission to automatic two-way flow, the biggest advantage is the use of the original power line network for data transmission, as long as the meter equipped with PLC communication module, without additional Build a network. Power line carrier communication transmission program has many years of mature operation, quite popular power companies such as State Grid Qing Mi.
NB-IoT is a comprehensive product of technological evolution and market competition. As the market is expected to be promising in the future, equipment manufacturers have fiercely vied for the right to speak in the standard-setting process. However, the expected performance index is still basically the same and the standards are still in place Accelerated development. At present, the industry chain is also actively carrying out trial testing and commercial trial. In the near future, NB-IoT will likely be widely used in different vertical industries and will open up a new era and a new era of interconnection for all things.
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