As the time of IoT(internet of thing) coming, the IoT communication technology is also changing with each passing day. From the early Zigbee, RF to the current NB-IoT, LoRa and Wi-Sun, each communication method has its own advantages and disadvantages, which can be well used in their respective application field. However, in a complex large-scale IoT environment (several types of equipment: electric meters, water meters, gas meters, smart street lights, smart cities, utilities, industrial equipment, etc.), it is extremely difficult to fully cover with only one communication methods. Nevertheless, the wireless transmission technology Wi-Fine that has been developed for IoT internet as many years is different. It has large capacity, fast speed, zero networking time, , extremely economical and practical, etc. Now, let’s focus on how did Wi-Fine wireless transmission technology beat Wi-Sun in application?
Wi-Fine (Wireless Free Intelligent Network) with low cost and low power consumption. This protocol defines complete link layer (MAC) and network layer (NWK) protocol specifications. As more than ten years of development and market verification, the Wi-Fine protocol has developed to the second generation. Comparing with the first generation, it has a qualitative leap in functionality and performance, which can meet most of the application needs of the IoT.
Please see the following table of characteristics of Wi-Fine（This is a comparison between Wi-Fine and Wi-Sun）
no theoretical upper limit,
a gateway can be more than tens of thousands of points
Network construction time
No networking time,
no time for route switching
Depending on the network size , a few minutes to an hour. Level 7 network construction takes more than 30 minutes, and level 255 requires a lot of time
More than ten levels of theory, 7 ~ 8 levels of actual
A variety of sleep, all nodes can sleep more, current <4mA when receiving, 0.3μA when sleeping
There is no sleep at present, and the end node can sleep in the future. Current 8mA when receiving, 2μA during sleep
Move arbitrarily, data continuously spread during the movement
Multiple: two-way communication between nodes; two-way communication between nodes and gateways
Only nodes and gateways
Whole Net Collection
Collect thousands of points of data within seconds, 100% of the entire network
Difficult to support
Each node has an immutable 6-byte customer ID and 6-byte global unique number UUID; each node is configured with a 3-byte network ID and 128 wireless channel codes. For dynamic encryption, the secret key uses a combination of the above three IDs and wireless channel coding. Use CRC-32 for message verification
RPL routing protocol
All nodes in the whole network can perform OTA at the same time
Achieve all nodes OTA in seconds
30 nodes OTA takes more than ten minutes, if the number increases, it cannot be realized
Proprietary chip, certified, currently very expensive
Wi-Fine mainly uses an efficient private protocol, which has the characteristics of large scale, fast speed, zero networking time and cost-effective. Wi-Sun is using the open global standard IEEE 802.15.4g, and it provides product connectivity by testing and certification, which have strong appeal. However, the application scenarios of the IoT are diversified, when the market does not focusing on openness, but pay more attention to economy, practicality, and performance, Wi-Fine has a strong vitality.
Figure 1 is a professional version of Wi-Fine mesh network (there are multiple network versions). All the nodes in the figure are equivalent. Any node can establish a route for two-way data exchange and any node can be used as a gateway.
The equipment installing those network can be used in smart cities, smart utilities and other IoT projects.
In addition, the authentication and encrypted communication technology based on the three IDs, Wi-Fine ensure the security of the network. Wi-Fine can reliably connect thousands of endpoint devices, and can truly realize the mutual communication between devices, while Wi-Sun seems weak in this regard.
In order to meet various low-power application scenarios, the Wi-Fine protocol stack provides multiple sleep strategies: asynchronous sleep, synchronous sleep, autonomous sleep, hybrid sleep, passive sleep and forced sleep, which make it have good performance in low-power application, but the Wi-Sun only be able to achieve the sleeping on the terminal device in the future.
From the table comparison and the above description, Wi-Fine is based on the IoT network and can realize the extensiveness, scalability and economy of the requirements by IoT customers.
Home Area and Field Area-two major application areas
Wi-Fine technology is applied in two areas: Home Area Network (HAN) and Field Area Network (FAN):
Home area network
When Wi-Fine communication technology is applied to smart meters and water meters, consumers can use the exclusive APP of Home Energy Management System (HEMS) to check the electricity and water information of household products and electricity and water budget settings; On the other hand, for power and water companies, they can accurately analyze the amount of electricity and water using and optimize energy management and control. Both of ways can achieve energy-saving effects. Smart cities can use the existing wireless communication infrastructure provided by advanced metering infrastructure (AMI) or street lighting networks to implement other applications, such as intelligent traffic signals, public transportation signs, intelligent parking lots, and electric vehicle charging stations.
The application of FAN is mainly for facilities in large-scale fields, such as smart grids, smart street light, distributed charging piles, which allowed public facilities to communicate through Wi-Fine networking to read, set, and control public facilities or equipment.
Figure 2 two fields of Wi-Fine technology: home LAN and outdoor LAN
With the increasing penetration of Wi-Fine technology in the regional market, the unit price of this hardware is obviously super competitive, which will expect to compete with Bluetooth, Wi-Fi, and Wi-Sun in 2022 and become an important method of IoT network.
Wi-Fine debuts with ZHEJIANG YONGTAILONG ELECTRONIC CO.,LTD.
After years of research and development, the R & D team of YTL has launched Wi-Fine technology to provide high-performance, low-power wireless transceivers and IoT related products that have practicality, economy and performance in market applications.
Transmitting over a long distance, with strict information security protection mechanism to prevent information leaking is the main technology of Wi-Fine series product by intelligent electric. In addition, the Wi-Fine series product have low power consumption, which is less than 0.3uA in the sleeping mode, and it is incorporated in the design of the IoT and the battery life can be up to 10 years. Application field is including sensors in IoT networks, measuring electricity meters, water meters, gas meters, street lights, smart cities, utilities.
The ZHEJIANG YONGTAILONG ELECTRONIC CO.,LTD. deployed 15,000 Wi-Fine node network equipment in factory and office areas, and successfully demonstrated zero networking time, large-scale capabilities, robust and fast data collection, and reliable remote upgrades. And using Wi-Fine network communication solutions pilot project to develop smart grid and IoT related products.