Smart parking system Smart broadcast system Urban Management Bureau Public Security Bureau Traffic Brigade Office of the Central Cyberspace Affairs Commission "Smart urban management" "Smart security" "Smart transportation" "Advertiseme nt publishing" Traffic sign plate Traffic signal lamp Parking camera Green lighting 5G micro base station Environmental monitoring sensing BeiDou positioning Information publication display Security camera Wireless WiFi Broadcast sound column Charging pile Human-computer interaction display One-click alarm Network Layer Application Layer Equipment Layer - BOE Platform Layer - BOE BOE City AI Management Platform BOE Smart Lamp Pole Smart City Management Platform Communication protocol Core gateway + Management Department Smart illumination system Security and urban management video system Traffic information publication system