IMPLEMENTATION AND ANALYSIS OF PACKET PRIORITY QUEUE IN WIRELESS ACCESS FOR THE VEHICULAR ENVIRONMENT
Allen Chih Jen Chang · The Knowledge Bank (The Ohio State University) · 2009
This document proposes methods of transmission with different priority level in the Wireless Access for the Vehicular Environment (WAVE) by a simulated slower system with 802.11p protocol. In the vehicular environment, data priority could be the most important issue for safety. There are four different priority levels in the Service Channel (SCH), Control Channel (CCH) and Car-to-Car Channel (C2C) before transmission, which are background, best effort, video and voice in increasing priority level. From [1], a queue data structure would be needed to separate those four different priority level packets at the MAC layer. By implementing a slower system with both On-Broad units (OBU) and Road-Side Units (RSU) in both python and C, and also by using different Arbitration Inter-Frame Space (AIFS) and adjustable Contention Window (CW) schemes, the communication in between machines will then have more effectiveness in safety.