5G LAN The technology is a new feature defined by 3GPP standards in the R16 phase. 5G LAN is a private mobile LAN service based on the access capabilities of 5G terminals and the 5G network. It enables enterprises to form "groups" for their terminals and provides flexible communication services such as terminal intercommunication or terminal isolation through the business server for the terminals within the group. Within the LAN, it can support point-to-point and point-to-multipoint communication modes based on IP or Ethernet.

1.1. Functional Scenario

5G LAN Support for two-tier networking. After different UPFs implement 5G LAN networking, they can communicate directly with each other. The 5G LAN can achieve the following networking architecture:

Figure 1 ：5G LAN Networking architecture

After completing the 5G LAN networking, the following functions can be achieved:

1.Two UEs under the same UPF can directly conduct Layer 2 interaction.

2.Different UPFs can interact directly through N19.

3.UEs that are not in the same 5G LAN user group cannot communicate with each other. As shown in the above figure, UE31 cannot access other 5G LAN user groups.

4.Enterprises can allocate IP addresses independently. As shown in the diagram of Park 1 above, enterprises can set up their own DHCP servers to allocate IP addresses.

Figure 2 ：Network side diagram

As can be seen from the above figure, two different UPFs can be connected through the N19 interface, and the UEs under these two UPFs can conduct layer 2 communication.

1.2. 5G LAN Advantages

When 5G LAN is not used, different UEs dial using the default IP and then need to exchange data through the central server to achieve communication, resulting in high costs for network deployment and maintenance. The networking architecture without using 5G LAN is shown in the following figure:

Figure 3: Network Architecture without Using 5G LAN

    Business pain points:

1.The adjustment of network data configuration involves a large amount of modification.

2.The network adjustment requires the terminal manufacturers to develop compatible solutions.

3.The network adjustment requires the collaboration of terminals, applications and enterprises, and the deployment is very difficult.

When using 5G LAN, different UE terminals can directly conduct Layer 2 data exchange without the need to deploy enterprise CE.

The networking architecture when using 5G LAN is shown in the following figure:

Figure 4: Network Architecture when Using 5G LAN

The advantages of using 5G LAN are as follows:

1. In the industrial internet, the cost of network construction can be reduced without the need to set up additional tunnel equipment.

2. Supports two-layer networking, and can use industrial protocol messages;

3. Reduce latency and network load.

The deep integration of ComIn I2105 with 5G LAN technology has achieved large-scale application in multiple industrial scenarios. Through technological innovation, it has solved production problems and enhanced production efficiency and economic benefits.

1. Precision manufacturing AI quality inspection: Millisecond response enhances detection accuracy

In the AI visual quality inspection scenario of lithium battery manufacturing enterprises, the ComIn I2105 connects to the 5G LAN network through the 5G SA mode, enabling real-time transmission of high-definition image data with a transmission delay controlled within 10ms. Combined with the local data processing capabilities of the equipment, the defect recognition accuracy rate has increased from 95% to 99.3%, the rejection rate of non-conforming products has risen by 80%, and the annual reduction in rework losses exceeds 2 million yuan, providing technical support for the quality control of precision manufacturing.

2. Flexible production of automotive components: Rapid networking accelerates production line iterations

In response to the urgent demand for new energy vehicle orders, automotive component manufacturers have leveraged the rapid networking capabilities of ComIn I2105 to efficiently transform their traditional production lines into motor accessory production lines. The newly deployed robots and automated equipment directly connect to the existing system via 5G LAN. The old stamping equipment synchronously connects to the network through the RS485 serial port, and in combination with the cloud platform for remote parameter configuration, the production line adjustment time has been shortened from 3 days to 8 hours, and the order delivery cycle has been reduced by 40%, significantly enhancing the enterprise's flexible production response capability.

3. Warehouse Logistics AGV Collaborative Scheduling: Precisely Synchronizing to Enhance Logistics Efficiency

In the storage area of the electronic factory, 10 AGV vehicles are deployed for material distribution. They are connected to the 5G LAN network via ComIn I2105 and utilize the native multicast function of the technology to achieve synchronous distribution of scheduling instructions. The positions, battery levels, and other data of the AGV vehicles are transmitted back in real time through the 5G network. The response time for path planning has been reduced from 1.2 seconds to 0.3 seconds, improving the material distribution efficiency by 50% and the warehouse turnover rate by 30%. This solution addresses the scheduling chaos caused by traditional network instruction delays and lagging status feedback.

4. Intelligent Monitoring in Metal Smelting Plants: Eliminating Wiring for Enhanced Safety Control
Due to the large span and extensive coverage area of each factory in the metal smelting plant, the traditional wired monitoring wiring faces the problems of "high excavation difficulty, cable corrosion and breakage, and the need to re-wire when equipment is moved". Based on the ComIn I2105 and 5G LAN solution, the "power is available then deployment" is achieved: 4K high-definition industrial cameras are deployed in industrial parks, raw material warehouses, and workshops. Through ComIn I2105, they are directly connected to the 5G LAN virtual domain, and the monitoring video is transmitted in real time to the core network video server. The video transmission delay is less than 15ms, the deployment cycle is shortened by 90% compared to the traditional solution, and the later adjustment of the position only requires modifying the power lines to complete.