The 802.11j standard "Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: 4.9 to 5 GHz Operation in Japan" is designed specially for Japanese market.
Стандарт 802.11j «Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: 4.9 to 5 GHz Operation in Japan» предназначен специально для японского рынка.