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Wi-SUN is an abbreviation for Wireless Smart Utility Network, which is a next-generation wireless communication standard that has received a great deal of attention due to the adoption of this Wi-SUN in smart meters of Japan’s leading electric power companies. In Japan, it is used in the 920MHz band called specific low power radio. The 920MHz band is a radio wave band that is unlikely to cause radio wave interference with existing radios, has low power consumption and is capable of long-distance data communication. Compared to 2.4 GHz used by ZigBee and Bluetooth, the 920 MHz band has excellent radio wave wraparound characteristics, in addition, Wi-SUN FAN (Field Area Network) has the frequency hopping that good tolerance to multipath propagation and system jamming and it possible to ensure stable communication even in the presence of walls and obstacles. Also, W-SUN FAN has multi-hop mesh construction features to be cover large-scale high-density urban areas. It has already been used in the United States. It is believed that this will continue to expand the market.
Protocol Implementation Conformance Statement (PICS): contains information such as supported data rates, frequency bands and other features
PICS – FAN
Company website https://www.co-nss.co.jp/iot/wisun/