At present, the wave of digitalized economy led by the new generation of information technology has swept in, and strongly promoted the prosperous development of the Internet of Things industry. As one of the important technologies for building low-power wide area network (LPWAN) in the IoT industry, Wi-SUN, with its advantages of wide coverage, low cost of service and low energy consumption, has shown remarkable application results and broad development prospects in many fields, such as smart cities, smart agriculture and smart factories.
Wi-SUN (Wireless Smart Utility Network) is an open standard based on IPv6 and IEEE 802.15.4g/e specifications using the frequency band below 1GHz, with four protocols, HAN, FAN, RLMM and JUTA, which can achieve the perfect coordination between long-distance transmission, high data throughput and low power consumption.
Among them, Wi-SUN FAN (Field Area Network), as the most important mesh network protocol in Wi-SUN, has self-organizing function and self-repairing routing function, and each device in the network can communicate with neighboring devices, which improves the reliability and stability of the network; at the same time, Wi-SUN FAN also supports multi-channel frequency hopping transmission function and routing node's Meanwhile, Wi-SUN FAN also supports multi-channel frequency hopping transmission function and routing node's multi-hop function, which greatly enhances the network's anti-interference ability and coverage.
Wi-SUN FAN, how to efficiently build IOT networks for smart cities?
Wi-SUN FAN is designed with the idea of providing a foundational measure of communication for mega-scale outdoor IOT networks, much like using the Internet on a smartphone or computer, allowing devices to be interconnected to a public network. The Wi-SUN FAN protocol's scalability, security, interoperability, and ability to support existing and emerging applications make it one of the ideal choices for building smart city IOT networks.
Wi-SUN FAN Protocol Architecture
The Wi-SUN FAN protocol is based on different IETF, IEEE and ANSI/TIA standards and supports low-power, low-cost networks. The complete FAN specification provides services based on IPv6 transport, including UDP and TCP services.FAN defines two methods for establishing IPv6 packet routes: RPL (mandatory) and MHDS (optional), and supports one or more PANs (Personal Area Networks), each including:
:: A gateway router: responsible for linking the WAN to the PAN;
:: Several router nodes: responsible for supporting the relaying of packets within a PAN;
:: Several leaf nodes: located at the end, providing minimum communication capabilities, sending/receiving IPv6 packets, etc.
With Wi-SUN FAN's unique protocol architecture, it is easy to build an IoT network with up to thousands of nodes in a wide area, which is capable of covering the entire urban area and adjusting the data rate by switching modes according to the needs of the application and realizing the interconnection and interoperability of various smart devices and sensors.
Wi-SUN FAN1.0 FSK modulation supports various rate combinations (FAN1.1 OFDM cap 2400Kbps)
In addition, the Wi-SUN FAN protocol unifies physical, link, network and transport layer specifications to ensure 100% interoperability between certified products.
Wi-SUN FAN communication hierarchy model
In the Wi-SUN FAN's communication stack, the data link layer provides physical layer control and management (with channel hopping communication mechanisms) and supports network layer data transmission and management services, including the Logical Link Control Sublayer (LLC) and the Medium Access Control Sublayer (MAC).
Among them, the LLC sublayer provides protocol distribution services and supports 6LoWPAN and L2 Mesh services (optional). the MAC sublayer supports channel access and works in Non-Beacon mode. Finally, the physical layer (PHY) is derived from 802.15.4g.
Therefore, in the wide-area IoT network embedded with Wi-SUN protocol, such as sensors, smart meters, smart street lights and rooftop energy storage facilities and other IoT terminal devices, not only can realize the function of long-distance wireless communication and reduce the investment in infrastructure, but also connect all the terminal devices to a public network; and Wi-SUN supports IPv6, with no signal blindness, so that each terminal device has its own IP address and can be interconnected with the cloud at any time, and the location can be known immediately in case of failure. Wi-SUN supports IPv6, no signal blind zones, so that each terminal device has its own IP address, can be interconnected with the cloud at any time, and can immediately know the location in case of failure.
Wi-SUN Product Recommendation-CMT2310A
CMT2310A wireless transceiver RF chip, is a fully compliant with the Wi-SUN FAN1.0 specifications and functional requirements of the chip products, its RF communication band 113-928MHz, applicable to all frequency bands around the world; the maximum transmit power of 20dBm, the maximum receive sensitivity -122 dBm@2.4kbps; with long-distance communication, ultra-low power, transceiver integrated and other advantages. Advantages.
In addition, the Wi-SUN FAN is based on a mesh network, and the CMT2310A is able to establish multiple connections with a large number of devices around it, relaying data over multiple links and increasing reliability.The CMT2310A can be applied to automatic meter reading, home security and building automation, ISM band data communication, industrial monitoring and control, remote control and security systems, remote key entry, wireless sensor nodes, tag reader and other IoT communication applications.
Wi-SUN Product Recommendation-HM-WS-001
HM-WS-001 is a high performance Sub-1GHz wireless communication module, developed and designed for IoT applications. It integrates the latest wireless communication technologies and is designed to meet the needs of smart devices for low power consumption, high reliability and large-scale network connectivity. With advanced RF design and optimized protocol stack, it is able to maintain stable connectivity and efficient data transmission in complex network environments.
HM-WS-001 has optimized the underlying code of Wi-SUN protocol stack in a directional way, and it can realize the Wi-SUN transmitting function by AT command, which is especially suitable for system integration solution providers with light development.
Overall, the highly integrated features and low R&D costs of HM-WS-001 provide customers with an ideal Wi-SUN solution that enables them to rapidly deploy high-performance IoT applications. In the future, HM-WS-001 is expected to play a key role in more application scenarios, helping to fully realize smart life and smart city.
Wi-SUN certificate is a certification issued by the Wi-SUN Alliance, an international standardization organization, which is designed to ensure that wireless communication products comply with specific technical standards and are able to achieve interoperability between devices from different vendors.The fact that CMT2310A and HM-WS-001 have been awarded the Wi-SUN certificate not only verifies their technological advancement and reliability, but also demonstrates that HOPERF products have reached the international leading level.
