In the period of the “12^th Five-year Plan”, the Beijing 1.4G private broadband trunking network cconstructed by Capinfo as coordinated by Beijing Municipal Government was included in the list of key e-infrastructure construction projects in Beijing as an integral part of Beijing wireless private network. At present, it mainly covers key areas of Beijing, including urban districts within the 5^th Ring, administrative office zones of city subcenters, downtown areas of outer suburbs, World Horticultural Exposition and competition venues of the Winter Olympics. In major national and public events such as 19^th Session of National Congress of the Communist Party of China, the Summit of Forum on China-Africa Cooperation, the World Horticultural Exposition, the Conference on Dialogue of Asian Civilizations, the events for celebrating the 70^th Anniversary of the Founding of the People’s Republic of China, the events for celebrating the 100^th Anniversary of the Founding of the People’s Republic of China, fight against COVID-19 and Beijing Winter Olympics, we played important roles in guarantee operation of the government network.

As private network, the 1.4G private broadband trunking network is safe, broadband and mobile. It guarantees high-quality emergency communications in major and public events. It also satisfies the needs for business integration, system interconnection, visual scheduling, mobile broadband data interaction and video surveillance. With a function for scheduling commands for routine urban management and emergency response in Beijing, this 1.4G private broadband trunking network fully supports B-TrunC and broadband data transfer services regarding government affairs and people’s livelihoods, including routine urban management and safe operation, social services management, resource and environment management.

After a decade of improved, the 1.4G private broadband trunking network has become an integral part of urban infrastructure for building “smart Beijing”.