With the changes in the socio-economic situation, the number of highway construction across the country will be significantly reduced. In the field of highways, the overall operation and management of highways will become the focus of work.Because of the substantial increase in traffic flow, how to Read More

Coal mine is a reasonable space excavated by humans when excavating coal-rich geological layers, and usually includes roadways, wells, and mining faces. There are many uncertain factors when working in coal mines. Gas, dust, floods in pits, or roof accidents that do not exist in open-air work may ca Read More

During the middle and late period of spring defense, the temperature in North China, Northeast China, West China, and Southwest China continued to rise, rainfall was insufficient, dry thunderstorms were frequent, and forest and grassland fire danger levels remained high. According to the three-dimen Read More

The selection of a base station needs to be comprehensively considered from the aspects of performance, matching, compatibility, and use requirements. Among them, it is particularly important to note that the base station equipment must be compatible or compatible with the mobile switching center in Read More

1 IntroductionIn recent years, with the rapid development of social economy, China's urban rail transit construction has entered a stage of rapid development, and its safety and comfort have received widespread attention from the society. On the one hand, passengers are no longer satisfied with a sm Read More

Nowadays, the communication system of traditional airports has always restricted the efficient operation of airport services. Under the background of rapid development of civil aviation and the construction of LTE network, whether LTE technology can be used to carry airport civil aviation services h Read More

China is a country with less forest resources. The forest coverage rate and per capita possession are far below the international average. At the same time, China is also a high-fire area. Since the founding of the country, an average of 12,000 forest fires have occurred each year. More than 700,000 Read More

In government, public security, emergency communications and other related fields, narrowband trunked communication systems represented by MPT1327, TETRA, and PDT have the characteristics of short call delay, group calling, and high command and dispatch efficiency, and have been widely used. The adv Read More

The horrific incidents that have occurred in Kunming have made urban safety a focus of attention. IFLY launched LTE trunking products and solutions, providing ideas for future public security system trunking communications. The LTE broadband multimedia trunking solution is based on LTE technology an Read More