What is a wireless AC controller? What does it do? Ac Controller,Gigabit Wlan Controller,Enterprise Ac Gateway,Wireless Ap Controller Shenzhen MovingComm Technology Co., Ltd. , https://www.movingcommtech.com
Wireless AC controller is a kind of network device, such as the AC100/150 of Fengrunda, which can be used to centrally control and manage wireless aps. It is the core of a wireless network and is responsible for managing all wireless aps in the wireless network. AP management includes: delivering configuration, modifying related configuration parameters, RF intelligent management, and access security control.
Why use a wireless controller, and what exactly does it do?
In fact, the role of the wireless controller is to play a gateway function between the WLAN and the Internet (on the router), and the data from different access points are aggregated and accessed to the Internet. The role of an access point (AP) is to complete wireless access, and it can control user access through network flags.
The role of wireless controllers
1, Flexible networking mode and excellent scalability
The AP does not need to be directly connected to the AC, so that the AP can be deployed in any place that needs to be covered through the network, such as you deploy an AP in each employee's home, and then connect to the wireless controller inside the enterprise through the VPN, you can expand the wireless network of the enterprise to the family of each enterprise member.
2, intelligent RF management functions, automatic deployment and fault recovery
Through the dedicated RF management module, we can initially estimate the AP deployment according to the user's architectural design drawing, and can calculate the average bandwidth of the wireless terminal, the coverage between AP and AP in the actual debugging process.
3. Centralized network management
All the configuration of the wireless network can be completed by configuring the wireless controller. For example, enable, manage, and maintain all AP devices and mobile terminals, including all functions such as radio wave spectrum, wireless security, access authentication, mobile roaming, and access users.
4, powerful roaming function support
The wireless controller uses AP as the boundary combined with fast RF management system, which greatly reduces the connection time between wireless client and AP, and thus realizes the function of fast roaming.
5. Load balancing
AP and wireless controller systems can distribute wireless users or terminals to nearby aps within the coverage area of an AP, ensuring the number of each wireless terminal or the sum of AP bandwidth transmission or the upper limit of each wireless terminal bandwidth.
6, wireless terminal positioning, rapid fault location and intrusion detection
Wireless controllers can track and locate the location of wireless terminals, such as wirelessly connected computers, PDAs and Wi-Fi mobile phones.
7, powerful access and security policy control
At present, the wireless system supports authentication of 802.1, WEB authentication, MAC, SSID, VPN, etc., and supports various encryption modes such as WEP, WPA, WPA-PSK, WPA2, etc., and all configurations can be configured globally through the wireless controller.
8, Qos support
AP and wireless switching systems can limit the maximum bandwidth of a user's wireless connection within each user's privileges. For different IP services, the system can also define different QoS queues through the wireless switch module. For example, for wireless voice applications, SIP and RTP protocols can be set in the high queue, while common applications such as http and ftp can be set in the low queue.
The wireless controller AC is more advanced than the AP, plays the role of manager in the wireless network, and the wireless controller AC also acts as a client to complete a series of functions in the wired network (such as authentication, authentication, etc.). However, wireless controller AC is not a WLAN device specified in the 802.11 protocol family, but as a supplement to the protocol in specific applications, and its price far exceeds that of ordinary access point (AP) devices.
In small-scale wireless networks that use only a few aps, it is not economical to use expensive wireless controller AC equipment. However, if the number of wireless aps is large, more than 20 can be used AC controller.
Three parts make up the Internet of Things and common wireless frequency band division
The Internet of Things (IoT) has become one of the most exciting and rapidly evolving topics in today’s technological landscape. From Germany's Industry 4.0 to smart transportation systems in the U.S., and smart city initiatives in China, the IoT revolution is being adapted uniquely across different countries based on their respective strengths and strategic goals. Rather than being confined to a single industry, it's more accurate to view IoT as a service-oriented ecosystem that reflects the progress of modern technology and the aspirations for a smarter future.
So, what exactly is the Internet of Things? At its core, IoT refers to a network of interconnected devices that can collect, exchange, and act upon data. It consists of three main layers: the perception layer, the network layer, and the application layer. To better visualize this structure, imagine an IoT system as a tree. The root represents the technical foundation — including sensor technology, embedded processors, and connection equipment. These components form the base that supports the entire system, with their level of development determining the strength of the trunk and canopy above.
Sensor technology includes devices like pressure, temperature, and humidity sensors, which gather real-world data. Embedded processing involves microcontrollers, microprocessors, and network processors that analyze and manage the collected information. Connection technologies such as NFC, Zigbee, GPS, and Wi-Fi enable communication between devices and the cloud.
Above the root lies the trunk, representing the software layer. This includes device drivers, server software, and application clients that manage and process data efficiently. Finally, the canopy symbolizes the application layer, where the IoT system delivers real-world value. These applications are divided into industrial and consumer use cases, ranging from smart manufacturing to home automation.
ZLG, a leader in the embedded systems industry, has been at the forefront of developing reliable wireless solutions for IoT. As a critical component of smart hardware, a stable and mature wireless solution ensures product reliability and enhances user experience. ZLG specializes in designing IoT wireless modules, providing a solid "root" for upper-layer products.
Common wireless frequency bands used in the IoT industry include 2.4 GHz, 868 MHz, and 915 MHz, each serving different use cases. ZLG's wireless products are widely applied in industrial, medical, and consumer sectors, known for their high stability and performance. The company is also focusing on integrating wireless modules with MCUs in the form of core modules, ensuring maximum stability at the lower level and simplifying secondary development for customers.
New technologies in IoT emerge to address specific challenges. No single technology can meet all IoT needs, so multiple wireless solutions coexist, complementing each other. For example, LoRa gateways can connect via Ethernet or Wi-Fi, while Bluetooth Low Energy (BLE) excels in human-computer interaction scenarios. This diversity allows IoT systems to be more flexible, scalable, and efficient.