Patent ID: 8675603

Claim:
A method of generating a signal for supporting vehicle communication handover in a plurality of sets of road side equipment (RSE), the method comprising, when supporting the handover from a first RSE of the plurality of RSEs and a second RSE that is adjacent to the first RSE to a vehicle: generating, by the second RSE, a second channel seizing signal that is longer than that of the first RSE in a control channel of an N-th sync interval, to allow the first RSE to transmit a data frame in the N-th sync interval; and generating, by the first RSE, a first channel seizing signal that is longer than that of the second RSE in a control channel of an (N+1)-th sync interval, to allow the second RSE to transmit a data frame in the (N+1)-th sync interval; wherein the generating of the second channel seizing signal comprises sustaining, by the second RSE, the second channel seizing signal during an interval in which the first RSE performs a backoff procedure with a maximum contention window (CW) value in the control channel of the N-th sync interval.