The Internet of Things is bound to bring a trillion market, LoRa growing under loose soil and NB-IoT born in the famous soil are the mainstream technologies in the field of Internet of Things. LoRa and NB-IoT are not much different. Almost all have the characteristics of long distance, high speed, low power consumption and wide coverage. Who is the best choice for the security risks under large-scale network deployment.
The Internet of Things is now very hot, and all major companies are gearing up to enter this future trillion market. However, in the "Technical Requirements for Micropower Short-range Radio Transmission Equipment (Draft for Comment)" (hereinafter referred to as "Draft for Comment") issued on December 13, 2017, the scope of the Internet of Things use frequency is specified, and the 470-510MHz frequency band can be As a civilian radio meter, the frequency band is used, but it can only be used for single frequency points, and can not be used for networking applications. This is undoubtedly a cold water for people in related industries.
The "Consultation Draft" released LoRa bears the bruntA stone provokes a thousand layers of waves, to know that the current low-power wide-area network deployment based on unlicensed spectrum is mainly concentrated in the 470-510MHz frequency band, the most representative of which is LoRa. Therefore, the introduction of the opinion draft even caused unanimous opposition from the LoRa industrial chain enterprises.
LoRa technology is an ultra-long-range low-power wireless data transmission scheme based on spread spectrum technology released by Semtech and the United States in 2013. With its long transmission distance (more than 15km) and ultra-low power consumption (battery life is far superior) 10 years), ultra-low operating costs (unlicensed spectrum, so no license required) and other key features make LoRa technology ideal for IoT applications requiring low power consumption, long distance, large number of connections, and location tracking, such as smart meter reading , intelligent parking, vehicle tracking, pet tracking, smart agriculture, smart industry, smart city, smart community and other applications and fields.
The most controversial issue in this "Draft for Comment" is LoRa and NB-IoT. In China's low-power WAN, these two are undoubtedly the most popular technologies. Among them, NB-IoT uses the licensed frequency band. There are three deployment modes, independent deployment, protection band deployment, and in-band deployment, and the global mainstream frequency bands are also concentrated at 800MHz and 900MHz.
LoRa uses the unlicensed ISM band, and China LoRa Application Alliance uses 470-518MHz. Therefore, the introduction of the "Draft for Comment" is not difficult to be considered for LoRa.
LoRa grown under loose soilBut in fact, because there is no dedicated ISM IoT band in China, the hardware devices deployed in low-power wide-area networks based on unlicensed spectrum in China are concentrated in the 470-510MHz band.
In the early stage, the Radio Authority adopted a more relaxed use policy for the 470-510MHz frequency band, which enabled LoRa technology and applications to develop rapidly in China. Many IoT applications such as meter reading, metering, and monitoring use this frequency band, and have been widely used. Frequency and gateway integrated access network application mode, a large number of LoRa enterprises are also deployed in industrial parks.
According to relevant sources, although some IoT innovation companies have expanded the application range of the 470-510MHz band, which may lead to some security problems, but now adopt the "one size fits all" approach to LoRa directly out of management, resulting in only NB-IoT The technology monopolizes the Internet of Things and it is difficult to convince the LoRa industry.
Born in the famous NB-IoTCompared to LoRa's bumps, NB-IoT appears to be more decent. NB-IoT is a new narrowband cellular communication LPWAN technology ideally proposed by the 3GPP standards organization. It is based on the existing cellular network and consumes only about 180KHz. It can be directly deployed in GSM networks, UMTS networks and LTE networks. Its core is for low-end IoT terminals (low current consumption), suitable for wide deployment in smart homes, smart cities, intelligent production and other fields.
Once launched, NB-IoT received extensive attention from the industry, and its policies and funds were strongly boosted. In the first quarter of 2017, the “National New Generation Information Technology Industry Plan†identified the NB-IoT network as one of the key projects of the “13th Five-Year Plan†for the information and communication industry.
Take China Telecom as an example. In 2017, China Telecom subsidized more than 300 million yuan to the Internet of Things, of which 200 million yuan was subsidized as a terminal module and 100 million yuan was used for an Internet of Things project. In addition, at the China Mobile Global Partner Conference in 2017, China Mobile announced the launch of a 2 billion IoT special subsidy. Among them, 1 billion yuan is specially prepared for NB-IoT, and the maximum subsidy rate is 80%.
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