The difference between 4G communication module CAT1 and CAT4

Introduction

LTE CAT's full name is LTEUE-Category, which can be explained by disassembling it: LTE refers to 4GLTE network, UE refers to user equipment, and Category is translated into grade.Tongshun interpretation is the level of 4G LTE network transmission rate that user equipment can support, and it can also be said to be a technical standard for 4G network speed.Therefore, LTE CAT1/CAT4 means that the user equipment LTE network access capability level is 1 or 4.

2. Comparison of CAT and CAT4 application scenarios

Application scenarios of CAT1: wearable devices, smart home appliances, industrial sensors, detection of hydrology and water conservancy, port logistics tracking.Shared payment class.It does not require high broadband speed, and it is battery-powered at the same time.High requirements for power consumption and data transmission stability.2 Comparison of CAT and CAT4 application scenarios

Application scenarios of CAT4: Internet of vehicles, smart grid, 4G wireless routing, video security, commercial display equipment, 4G law enforcement instrument.Live video equipment.The requirements for broadband speed are very high.At the same time, the requirements for stability are higher.

3. Why is Cat.1 so popular?

1. The inevitability of 2G/3G network withdrawal: As 2G and 3G network withdrawal becomes an inevitable choice, the IoT technology based on 4G/5G (NB-IoT+4G+5GNR) will play a major role in opening the Internet of Everything.

2. 5G construction and better use of frequency bands: mobile terminals such as mobile phones will eventually migrate to 4G/5G and above networks, 2G/3G frequency bands will be idle, and 4G frequency bands will be shared by 5G. In order to make better use of the spectrumresources, then the network access capability needs to be developed to many IoT devices with network requirements.

3. NB-IOT cannot meet the requirements of medium speed and mobile characteristics

4, Cat.4 is overqualified, and the cost is high

5, Cat.1's own advantages

6. Common LTE Cat.4 cannot meet some IoT device communication needs: LTE was originally designed to address a primary need - it must be fast enough.Although this technology can meet the needs of mobile broadband communication, it cannot be well used in some application products, such as wearable devices, industrial sensors, household appliances, etc.Such devices are characterized by small size, battery power, and are often placed in places such as basements with poor network coverage or even no signal.

Four. Summary

Although CAT1 is currently very popular, many industries still use CAT4 4G modules, which are more stable.