The invention discloses an anti-
adjacent channel interference transaction method and
system suitable for an OBU electronic tag, the OBU can only receive the awakening interruption generated by the lane awakening
signal to serve as a judgment basis for identification.The method comprises the following steps: when bytes of a second preset number of front thresholds of received data are broadcast MACof an RSU and a wake-up
interrupt flag is set, determining the BST data as BST data of a lane under the condition that a link is not established, and continuously receiving and replying VST data of acorresponding
frequency band; and when the bytes of the first preset number threshold value and the second preset number threshold value of the received data are special MAC of the OBU, determining the bytes as downlink frame data of the lane, continuously receiving other bytes of the downlink frame data and replying to an uplink frame, and establishing a
communication link. According to the technical scheme provided by the invention, the OBU receives the lane wake-up
signal and then the received BST data is identified as the effective
signal of the lane, so that the adjacent lane
interference resistance of the OBU can be effectively enhanced; and the received downlink data is compared with preset numeric nodes in advance, so that the
transaction time can be greatly shortened.