As an important part of highway traffic engineering facilities, wireless communication system provides uninterrupted voice, image and data transmission channels for operation and management at all levels, and is an important basic guarantee for safe, high-speed, smooth and efficient operation of expressways。Nowadays, with the rapid development of domestic highways, the demand for communication system construction is increasing day by day。Combined with China's highway construction needs, Beifeng public network scheduling communication system came into being:...