On May 19th, at the 2017 Smart Hardware Developers Conference held by the Smart Product Circle, Huang Miao, Director of Operations Development of China Telecom Shenzhen Branch, published the theme of “Building a Quality Network, Promoting Open Cooperation, and Creating NB-IoT A wonderful speech from Time. It reveals the development trend of the Internet of Things and the progress and business case of China Telecom in the NB-IoT commercial network.
2017 is the first year of NB-IoT commercial use. As a major player in the development and application of the Internet of Things in China, China Telecom is concerned about the growth of market demand. Director Huang Miao said that according to IDC's forecast, the number of 30 billion IoT connections in the world in 2020.
Figure 1: Huang Miao, Director of Operations Development, China Telecom Shenzhen Branch
According to the two key indicators of network requirements and network access technology, the Internet of Things market can be divided into three categories according to low, medium and high, as shown in the following figure: 5% is the high rate requirement, and video surveillance and large traffic network ecology use 3G and 4G. Technology, 25% is the medium rate requirement. For example, remote meter reading and smart home hardware use 2G technology. Since 2016, NB-IoT technology has been launched with our rapid introduction of Ericsson, Qualcomm and Huawei. The low rate requirement of %, in this field, there are Sigfox, LoRa and ZigBee, many manufacturers enter.
Remote meter reading, smart parking, smart home speed requirements are not so high, but the coverage requirements are high, many devices require low-power, low-cost, low-rate, deep coverage communication modules.
Why does China Telecom favor NB-IoT technology? Mainly considering the high reliability, high stability of the telecommunication network and complying with international 3GPP requirements. Compared with NB-IoT, LoRa is a proprietary technology. The LoRa network set up by China Telecom Shenzhen in Ludan Village has greatly affected data transmission during severe weather such as storms.
SIgfox is also a proprietary technology, and these technologies alone cannot meet the three needs of operators. The 2G network will continue to withdraw, and some foreign operators have closed the 2G network. For IoT links in low-power management, operators choose competitive cellular technology, and NB-IoT caters to the needs of operators.
When will the module come out, when can the operator NB-IoT network be laid out?
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