PResync: A method for preventing resynchronization in the IEEE 802.11p standard

Vehicular networks are seen as the basis for the development of intelligent transportation systems. Therefore, and in order to take advantage of the benefits from these transportation systems, the development of standards that meet the specific characteristics of vehicular networks was required. The "Wireless Access in Vehicular Environments" (WAVE) was developed in order to fulfill this need. This standard presents an architecture based on a division into multiple channels, which are set for certain types of applications, and it uses a switching mechanism for the selection of channels, since only one channel is active at a given time. However, in certain scenarios, this channel switching mechanism introduces an undesirable effect that allows different vehicles to transmit simultaneously, thus resulting in collisions. This work proposes a solution to this problem with the development of a mechanism based on the recalculation of the transmission delay, which will work along with other features, such as the broadcast suppression mechanism, in order to ensure greater performance in transmissions.