Network roaming switching method and device

• Main Authors: ZHAO YIPING, XU LIYUN, LI JUN
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2017
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; WIRELESS COMMUNICATIONS NETWORKS

The present invention provides a network roaming switching method and device. The network roaming switching method is applied to a vehicle-mounted WDS which is in communication connection with a plurality of AP arranged by the side of a road, and comprises the steps of using the vehicle-mounted WDS to real-timely receive the beacon frames sent by the plurality of adjacent AP, adding the plurality of AP satisfying a matching requirement in a candidate AP correlation table, and ranking the plurality of AP in the candidate AP correlation table. When a roaming timer of the vehicle-mounted WDS tells time to the roaming detection, the vehicle-mounted WDS detects the signal intensity of the auxiliary link currently correlated AP, and switches the AP when the situation that a roaming switching condition is satisfied is detected, so that the AP roaming rapid switching is realized, the communication quality after switching is guaranteed, at the same time, the zero time delay and the zero-packet-loss that the WDS upload