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Wireless AP and Wireless AC Selection Guide: The cornerstone for building a powerful industrial IoT wireless network
In the deployment of the Industrial Internet of Things (IoT), wireless networks are the key to achieving device connectivity, real-time data transmission, and security guarantees. As the core components of a wireless network, the wireless access point AP and wireless controller AC directly affect the performance and reliability of the entire network. The following is a detailed guide to help those who need to build a strong, stable, and secure industrial IoT wireless network for networking applications.

1. Selection of Wireless Access Point (AP)
Wireless AP is a key device in wireless networks, responsible for providing communication between wireless workstations and wired local area networks. In the industrial IoT environment, the selection of wireless APs needs to consider the following key factors:

① Environmental adaptability:
Outdoor/indoor: Select the appropriate AP type based on the deployment environment. For example, outdoor APs need to have waterproof, dustproof, and high temperature resistance features to adapt to harsh environments.
Terminal distribution: For terminal sparse distribution such as warehouses or high-density wireless access such as conference rooms and production lines, select APs with different performance to meet the needs.
② Installation method:
Ceiling, panel or wall hanging: choose the appropriate installation method according to the specific scene. Ceiling AP is suitable for ordinary areas, panel AP is suitable for luxury or specific decoration areas, and wall-mounted AP is suitable for wall installation.
③ Power supply mode:
Standard PoE802.3af/802.3at, Passive PoE or DC: Select the appropriate power supply method based on existing power supply facilities. PoE power supply can simplify wiring and reduce costs.
④ Coverage:
Select the appropriate coverage range based on actual needs, such as single room, multiple rooms, area coverage, or fixed point coverage. Ensure that wireless signals cover all devices that need to be accessed.
⑤ Carrying capacity:
Select the appropriate AP based on the number of terminals. Dual-band APs typically support more client access and are suitable for areas with dense populations or many devices.
⑥ Frequency band support:
Single/dual frequency: It is recommended to use dual-frequency APs in densely populated areas to provide higher wireless bandwidth and better wireless experience. At the same time, dual-band AP also supports 2.4GHz and 5GHz bands to reduce interference.
⑦ Security:
Ensure that the Access Point (AP) supports the latest wireless security standards, such as WPA3, to protect the network from attacks.
2. Selection of Wireless AC
Wireless AC is responsible for unified control of wireless APs and simplifies network management and maintenance. When choosing a wireless AC, you should consider the following aspects:

① Number of APs managed:
Select the appropriate AC based on the actual number of APs deployed. Ensure that AC can manage all APs and provide good performance and scalability.
② Authentication function:
Support multiple authentication methods, such as WPA/WPA2, WPA-PSK/WPA2-PSK, MAC address authentication, etc. At the same time, consider whether it is necessary to support advanced authentication methods such as Web authentication and WeChat authentication to meet specific needs.
③ Feature Support:
Select an AC that supports specific functions according to actual needs, such as firewall settings, user permission management, traffic control, roaming support, and so on. These features help improve the security, stability, and performance of the network.
④ Performance and stability:
Choose an AC with strong performance and high stability. Ensure that AC can handle a large number of concurrent connections, provide high-speed data transmission speeds, and maintain stability over long periods of operation.
⑤ Usability:
Consider whether the management interface of AC is user-friendly and whether it supports remote management and monitoring functions. These features help simplify network management and improve work efficiency.

When constructing an industrial IoT wireless network, the purchase of wireless APs and wireless ACs is crucial. Select the appropriate wireless AP by comprehensively considering factors such as environmental characteristics, installation methods, power supply methods, coverage areas, number of devices, frequency band support, and security; At the same time, select the appropriate wireless AC based on factors such as the number of APs managed, authentication capabilities, functional support, performance and stability, and ease of use. Only in this way can we build a strong, stable and secure industrial IoT wireless network, providing strong support for the digital transformation and intelligent upgrading of enterprises.