Crossing traffic signal control machine, traffic control center wireless communication method and apparatus thereof

The invention provides a crossing traffic signal control machine, a traffic control center wireless communication method and an apparatus thereof. In the method, a wireless communication apparatus, which is based on a 3G technology and placed in the crossing traffic signal control machine, is used to realize wireless communication between the crossing traffic signal control machine and a traffic control center. The method comprises the following steps that: the crossing traffic signal control machine uploads data to the traffic control center; the traffic control center downloads data to the crossing traffic signal control machine. The crossing traffic signal control machine connects with a wireless communication apparatus through a network cable and forms a wireless connection with a 3G base station through the apparatus so as to access to a 3G network. And the crossing traffic signal control machine connects with a special relay server located in the traffic control center through a wired network of a 3G op