Ⅰ. Advantages of 4G wireless communication technology:

  1. Fast transmission rate: The theoretical peak download speed of 4G network can reach 100Mbps. Even if it is interfered by some signals in actual use, it can still maintain efficient and stable transmission;
  2. Low latency: Under good signal conditions, the latency of 4G network is relatively low;
  3. No distance limit: Bluetooth, WiFi, etc. are subject to large distance restrictions, while 4G network is not subject to any restrictions. As long as there is signal coverage, communication can be achieved in remote mountainous areas;
  4. Support more devices: 4G network can support more devices online at the same time to meet the needs of users to surf the Internet with multiple devices at the same time.

Ⅱ. Disadvantages of 4G wireless communication technology:

  1. Affected by signal factors: 4G wireless communication relies on good signals for data transmission. Although there are some 4G antennas that can amplify the signal, in some remote areas, mountainous areas or basements, 4G signals may become unstable, resulting in data transmission failure or inaccessibility.
  2. High energy consumption: Compared with other wireless connection technologies, such as Bluetooth, WiFi, ZigBee, NB-IoT, etc., 4G network equipment has relatively high energy consumption. On some devices that pursue low power consumption, 4G wireless communication technology is relatively low compared with other wireless connection technologies.

III. Necessary hardware foundation of 4G wireless communication technology:

  1. 4G communication module: This is the core component to achieve the connection between the device and the 4G network. It has a built-in 4G chip to process data and transmit it through the 4G network. Our products include E840-TTL (EC04-DNC), E840-TTL (EC05-DGC), E840-TTL (EC05-DNE) and other 4G Cat.1 modules that can meet different usage scenarios and functions.
  2. Antenna: The antenna is an indispensable hardware part of the wireless communication system. It converts electrical signals into electromagnetic waves and transmits them. It can also convert received electromagnetic waves into electrical signals. It is an important guarantee for communication quality and signal coverage. Our products have antennas of different shapes and gains to adapt to different usage scenarios and interfaces, such as FPC antennas, strong magnetic copper rod suction cup antennas, fiberglass antennas, etc.
  3. IoT card: IoT card is a SIM card provided by China Mobile, China Unicom and China Telecom, three major operators, for IoT devices to provide basic communication services for IoT devices. The status of IoT card is mainly divided into: testable, unused, in use, deactivated, shut down and cancelled. It should be noted that IoT has the characteristic that one card can only be used by one device. When the IoT card is activated in one device and inserted into another device for use, the card will be locked, making the IoT card unusable. At the same time, the IoT card cannot provide network for the mobile phone. When the IoT card is inserted into the mobile phone for use, it will cause the card to fail or shut down.
  4. Other auxiliary hardware: According to different usage scenarios and requirements, the 4G wireless communication system may also include other auxiliary hardware, such as GPS module, memory, etc.

Ⅳ. IoT platform

The IoT platform, referred to as the IoT platform, is a core component commonly used in 4G wireless communication to connect and manage IoT devices and data.

IoT devices can be connected to the IoT platform through 4G wireless communication technology. The platform can accept and manage a large number of devices, which are not restricted by distance, function, etc. IoT devices can be connected through the interfaces and protocols defined by the IoT platform. After the devices are connected, the IoT platform can serve as a data transfer platform in 4G wireless communication. The data uploaded through 4G wireless communication can be seen on the platform. The platform stores the data and processes it according to user needs. Users can also monitor 4G devices and issue instructions through the platform.