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This article introduces you how to conduct a comparative analysis of LoRaWAN and NB-IoT, the content is very detailed, interested friends can refer to, hope to be helpful to you.

There are a variety of connection requirements in the Internet of things, which require different connection technologies. LoRaWAN and NB-IoT are only two of these links. In some scenarios, LoRaWAN and NB-IoT are not competing to complement each other. In fact, at present, NB-IoT is the largest LPWAN network in terms of investment scale and network coverage.

The Internet of things (IoT) is constantly changing the way we connect and interact with devices, and there are many networks to choose from in building intelligent solutions. The most concerned low-power wide area networks (LPWAN) are narrowband Internet of things (NB-IoT) and LoRaWAN.

NB-IoT uses the infrastructure of cellular networks to communicate over long distances between clouds and devices and is compatible with LTE mobile networks. LoRaWAN uses the Sub-1GHz license-free wireless band for LPWAN communication between the sensor and the cloud network and the application server. LoRa devices and wireless RF technology (LoRa technology) are rapidly becoming the de facto platform of the Internet of things. Because of their long distance and low power consumption, a variety of application solutions have been implemented in many vertical industries.

The Internet of things is to use appropriate technologies to solve real-world problems and improve efficiency. There are several factors to consider when creating an Internet of things application, including LPWAN connectivity. Here's a comparison between LoRaWAN and NB-IoT technology:

1. ecosystem

LoRaWAN, supported by LoRa Alliance ™, is an open, non-profit association of more than 500 members. Its members worked closely and shared experiences to promote and promote the success of the LoRaWAN protocol, becoming the leading open global standard for secure carrier-class LPWAN connections to the Internet of things.

NB-IoT is supported by two telecom standards associations, 3GPP and GSMA, which share a common goal of promoting the interests of mobile networks and devices.

two。 Frequency spectrum

LoRaWAN is optimized for ultra-low power consumption and remote applications. As a result, networks running on the license-free ISM Sub-1GHz spectrum can be accessed free of charge by network operators and equipment manufacturers.

NB-IoT uses cellular spectrum network, which is optimized for spectrum efficiency. The license fee for the use of frequency band is very high, and it is limited to a small number of operators.

3. Deployment statu

According to the LoRa Alliance, 83 public network operators in 49 countries are using LoRaWAN, and more private companies are also using LoRaWAN networks.

GSMA, which represents the interests of NB-IoT, LTE and other mobile networks, says that 40 countries will launch NB-IoT networks in the future.

4. Deployment option

The LoRaWAN network provides highly flexible deployment. Can be installed in public, private, or hybrid networks, indoors or outdoors. LoRaWAN signals can penetrate into urban infrastructure, and each gateway can cover 30 miles in an open rural environment.

NB-IoT uses LTE cellular infrastructure, which is an outdoor public network and requires the deployment of 4G/LTE cellular towers. If the sensor exceeds the coverage of the base station, the base station is not easy to move.

5. Agreement

The LoRaWAN protocol sends data asynchronously, and data is sent only when needed. In this way, the battery life of sensor equipment can be extended by up to 10 years, and the cost of battery replacement is low.

NB-IoT needs to maintain a synchronous connection to the cellular network, whether or not data needs to be sent. For sensor devices, it will consume a long battery life, resulting in high cost of battery replacement, which may be too high in many applications.

6. Emission current

The LoRaWAN provides 18 mA emission current at 10 dBm and 84 mA emission current at 20 dBm. Modulation differences allow LoRaWAN to support very low-cost batteries, including button batteries.

The current consumption of the NB-IoT sensor is ~ 220 mA at 23 dBm and 100 mA at 13 dBm, which means that it requires more power to operate, more frequent battery replacement or larger battery capacity.

7. Receiving current

LoRaWAN provides low sensor BOM cost and battery life for remote sensors. The receiving current is about 5 mA, and the overall power consumption is reduced by 3-5 times.

The receiving current of NB-IoT is about 40 mA. The average consumption of communication between cellular networks and devices is more than 110 mA, and a communication lasts tens of seconds. The protocol cost has a significant impact on the battery life of devices that need to work for 3 years, 5 years, or more than 10 years.

8. Data rate

The LoRaWAN data rate is about 293 bps-50 kbps. The LoRaWAN protocol dynamically adjusts the data rate according to the distance between the sensor and the gateway to optimize the air time of the signal and reduce the collision.

The peak data rate of NB-IoT is about 250 kbps, which is more suitable for use cases with higher power budget and higher data rate (above 50 kbps).

9. Link budget

The MCL signal of LoRaWAN varies depending on regional regulatory restrictions. The link budget is between 155 dB and 170 dB.

NB-IoT needs to repeat the remote sensor at a low bit rate to be able to support the remote sensor. The link budget * * is 164dB.

10. Mobility

LoRaWAN can support mobile sensors to track the movement of assets from one place to another. Even without GPS, high enough accuracy can be obtained for many applications.

NB-IoT is currently limited to cell reselection in idle mode and does not optimize mobile asset tracking.

This is the end of the comparative analysis of LoRaWAN and NB-IoT. I hope the above content can be helpful to you and learn more knowledge. If you think the article is good, you can share it for more people to see.

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