Introduction to the main features of NB-IOT technology

Introduction to the main features of NB-IOT technology What are the advantages of NB-IOT

NB-IoT (Narrow Band Internet of Things, NB-IoT) is an emerging technology of the cellular-based narrowband Internet of Things in the IoT field. It supports the cellular data connection of low-power devices in the wide area network. It is also called low-power wide area network ( LPWA).

　　NB-IoT only consumes about 180KHz frequency band, and can be directly deployed on GSM network, UMTS network or LTE network to support efficient connection of devices with short standby time and high network connection requirements. Its main features are wide coverage, multiple connections, low speed, low cost, low power consumption, and excellent architecture. NB-IOT uses the license frequency band and can be deployed in three ways: in-band, guard band, or single carrier.

NB-IOT technical characteristics

　　 1. Massive connections: up to 100,000 connections per cell; NB-IoT has a 50-100 times increase in uplink capacity than 2G/3G/4G, which means that under the same base station, NB-IoT can be compared Existing wireless technologies provide 50 to 100 times the number of accesses.

　　 2. Ultra-low power consumption: battery life of up to ten years;

　　 The energy consumed by communication equipment is often related to the amount of data or rate, that is, the size of the data packet sent per unit time determines the size of the power consumption. The amount of data is small, and the modem and power amplifier of the device can be adjusted to a very small level. NB-IoT focuses on small data volume and low rate applications, so the power consumption of NB-IoT devices can be very small, and the battery life of more than 5 years can be guaranteed.

　　3. Deep coverage: It can achieve a coverage gain of 20db higher than that of GSM;

　　 NB-IoT has a 20dB gain over LTE, which is equivalent to a 100-fold increase in transmit power, that is, a 100-fold increase in coverage, even in underground garages, basements, underground pipelines and other places where signals are difficult to reach.

　　4. Stable and reliable: It can provide carrier-class reliable access and effectively support IoT applications and smart city solutions.

NB-IoT is directly deployed in GSM network, UMTS network or LTE network, and can be reused with existing network base stations to reduce deployment costs and achieve smooth upgrades. However, it uses a separate 180KHz frequency band and does not occupy the voice and data bandwidth of the existing network. , To ensure that traditional business and future Internet of Things business can be carried out stably and reliably at the same time. Taking the application of smart meter reading as an example, compared with the 60% success rate of data recovery using wired PLC meter reading, NB-IoT can guarantee a successful data recovery rate of 99%, and the reliability is greatly improved.

　　5. Security: Inherit 4G network security capabilities, support two-way authentication and strict air interface encryption to ensure the security of user data;

　　 NB-IOT and LoRa simple comparison

In the future, NB-IoT will shine in operator-level networks, bringing wide coverage, large connections, and low-cost network solutions to the Internet of Things era; while LoRa will achieve rapid and flexible application in smart cities, industries, and enterprise-specific applications deploy. The two network technologies can fully complement each other in commercial use.