Something You Should Know About the Characteristics of NB-IoT

NB-IoT is positioned at the carrier level, and based on the low-speed IoT market of licensed spectrum, it can be deployed directly on the LTE network, or it can be deployed through equipment upgrades based on the current operator's existing 2G and 3G networks, which can reduce Deployment costs and smooth upgrades are an emerging IoT technology that can be widely used around the world, and can build the world's largest cellular IoT ecosystem.
The advantages of NB-IoT technology are mainly reflected in the following aspects:
NB-IoT feature one: wide coverage
Compared with GPRS or LTE, the maximum link budget of NB-IoT has increased by 20dB, which is equivalent to an increase of 100 times. It is easy to cover even places where ordinary wireless network signals are difficult to reach, such as underground garages, basements, and underground pipelines.
NB-IoT feature two: low power consumption
NB-IoT can keep devices online all the time, but save power by reducing unnecessary signaling, longer paging cycles, and terminals entering PSM state. In some scenarios, the battery power supply can last up to 10 years.
NB-IoT feature three: low cost
Low speed, low power consumption, and low bandwidth can bring about low complexity of the terminal, making it easy for the terminal to achieve low cost. At the same time, NB-IoT is based on the cellular network and can be directly deployed on the existing LTE network, and the deployment cost of the operator is relatively low.
NB-IoT feature four: large connection
A single sector of an NB-IoT base station can support the connection between more than 50,000 UEs and the core network, which is 50-100 times more user capacity than existing 2G, 3G, and 4G mobile networks. Módulo GPRS
NB-IoT Feature Five: Authorized Spectrum
NB-IoT can be deployed directly on the LTE network, or it can be deployed by using 2G and 3G spectrum refarming. It has strong advantages compared with unlicensed spectrum in terms of data security and network construction costs, as well as in the industrial chain and network coverage. Superiority.
NB-IoT feature six: security
Inheriting the capability of 4G network security, it supports two-way authentication and a strict encryption mechanism on the air interface to ensure the security of the air interface when the user terminal is sending and receiving data.
The system bandwidth of NB-IoT is 200kHz, and the transmission bandwidth is 180kHz. This design advantage is mainly reflected in three aspects:
The transmission bandwidth of the NB-IoT system is the same as the carrier bandwidth of a Physical Resource Block (PRB) of the LTE system, which is 180kHz, which makes the NB-IoT system well compatible with the traditional LTE system. In addition, the design of narrow bandwidth brings convenience to the deployment of Guard-Band of the LTE system. For operators, it is easy to implement co-site deployment with traditional LTE network equipment, effectively reducing the cost of NB-IoT network construction and operation. dimension cost. módem inalámbrico LoRa
The system bandwidth of the NB-IoT system is the same as the carrier bandwidth of the GSM system, which is 200kHz, which enables the NB-IoT system to be seamlessly deployed in the spectrum of the GSM system, and provides inherent convenience for operators to re-cultivate the 2G network spectrum sex.
NB-IoT will effectively reduce the complexity of NB-IoT user terminal radio frequency chips. At the same time, the narrower bandwidth provides lower data throughput, and the complexity and specifications of the digital baseband part of the NB-IoT user terminal chip will also be greatly reduced. This enables NB-IoT chips to achieve higher chip integration than traditional LTE systems, further reducing chip costs and development complexity.