Among low-power WAN communication technologies, LoRa and NB-IoT are the best prospects for development. At this time, many people ask questions, what is the difference between LoRa and NB-IoT, what is the difference, which one is better, can occupy the commanding heights of LPWAN? This article will take you to explain the difference between LoRa and NB-IoT.
Analysis of key features of LoRa technology
LoRa was born earlier than NB-IoT. In August 2013, Semtech released a new chip based on Long Range (LoRa) technology below 1GHz, with sensitivity up to -148dbm, compared to other advanced The horizontal sub-GHz, the highest receiving sensitivity is improved by more than 20db, making the network connection more reliable.
LoRa uses linear frequency modulation spread spectrum modulation technology to not only maintain the same low power consumption characteristics of FSK (Frequency Shift Keying) modulation, but also increase the communication distance, and also improve network efficiency and eliminate interference, that is, terminals of different spreading sequences even Using the same frequency and transmitting at the same time will not interfere with each other, so the Concentrator/Gateway developed on this basis can receive and process data of multiple nodes in parallel, greatly expanding the system capacity.
It is well known that linear spread spectrum has been used in military and space communications for decades because it can achieve long communication distance and robustness of interference, while LoRa is the first low-cost implementation for commercial use. The situation in the field of embedded wireless communication has been completely changed. This technology changes the trade-off between transmission distance and power consumption, providing a simple communication system that can achieve long distance, long battery life, large capacity, and low cost.
LoRa is mainly operated in global free frequency bands such as 433, 868, and 915 (that is, unlicensed frequency bands). The LoRa network is registered by the terminal (built-in LoRa module), gateway (or base station), server, and cloud. The application data can be transmitted in both directions.
NB-IoT rising star
In June 2016, the standard freeze of NB-IoT enabled the well-recognized NB-IoT large-scale commercial base to be implemented. Many people believe that 2017 will be the first year of NB-IoT network commercial use.
NB-IoT is a low-power WAN technology promoted by Huawei and many operators. Therefore, it has attracted the attention of many people in the industry. The topic of LoRa and NB-IoT is uninterrupted. For the background NB-IoT, LoRa will be Will not be replaced? First look at the difference between them.
What is the difference between LoRa and NB-IoT?
From a technical point of view, there is not much difference between LoRa and NB-IoT. From the application range, many of them are the same. The difference is that NB-IOT adopts a method in which operators uniformly deploy networks covering the whole country to perform toll operations, and LoRa allows enterprises to build their own networks to realize business operations.
Although the background of NB-IoT is strong and there are many operators to support it, it does not mean that LoRa will be easily replaced. Who is better, can occupy the commanding heights of LPWAN, and it is not judged casually. LoRa has a mature commercial, and NB-IoT is just getting started, who is better than us and we will wait and see.