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Tag and Server Communication Scheme

This tutorial is for customers who need to transmit tag data to the server in other ways. Through this tutorial, users can understand the principles and applicable scenarios of various transmission solutions, so as to match the best solution for the project.

Overview​

The positioning system usually needs to pay attention to the location information of the tag in real time. However, due to the limited coverage of the UWB gateway, relying solely on the UWB gateway backhaul will greatly increase the density of gateway deployment and increase equipment and maintenance costs. Therefore, other wireless solutions can be selected to replace UWB backhaul. Common wireless solutions include LoRa, cellular networks (4G Cat.x, 5G Cat.1), etc.

LoRa​

LoRa is a long-range wireless communication technology. It has the characteristics of low power consumption, long communication distance, and strong anti-interference ability. The communication range can cover a communication range of several kilometers, but its data rate is low, usually less than 20kbps. You only need to add a LoRa node on the tag side and deploy a LoRa gateway on the host side to transmit data in real time. A gateway every few kilometers greatly reduces the density of gateways, and low power consumption can ensure the endurance of tags.

  1. Hardware preparation: Select the appropriate LoRa node and connect the tag
  2. Link configuration: Perform network and parameter configuration on the Lora gateway and nodes to ensure that the gateway and nodes can communicate normally
  3. Host preparation: Connect the Lora host to the background host to ensure that the host can communicate with the background normally.
  4. Data acquisition: Users can obtain tag positioning data on the background host.

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4G Cat.1​

4G Cat.1 is a wide area network communication technology based on cellular networks. It is mainly used in the IOT field. It has an uplink transmission rate of 5Mbps. Data is directly transmitted to the cloud server through the cellular network. When using 4G Cat.1 as a backhaul solution, no additional gateway is required. The tag positioning data can be directly accessed through the cloud server without being restricted by the lower limit, which is very convenient. However, each tag needs to be connected to an additional 4G Cat.1 node, which will incur traffic fees during the communication process and has high power consumption.

  1. Hardware preparation: Select the appropriate 4G Cat.1 module and connect the tag
  2. Network connection: Activate the SIM card, configure the APN, username and password so that the module can access the mobile network.
  3. Connect to cloud server: Establish a connection between the module and the cloud server, usually using HTTP, MQTT or other protocols.
  4. Data reporting: Tag positioning data is reported to the cloud server via Cat.1
  5. Data acquisition: Users can obtain tag location data by accessing the cloud server

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