Dianxin kexue (Sep 2015)
Protocol Sequence-IEEE 802.11p Based Channel Access Mechanism in VANET/LTE-Advanced Heterogeneous Network
Abstract
Abstract: VANET／LTE-Advanced heterogeneous network was proposed by combining LTE-Advanced with VANET. The utilization of channel and channel access mode was reconfigured in order to improve the system performance. Aiming at the V2V communication, the performance of channel access mechanism based on IEEE 802.11p and protocol sequence were analyzed and compared with each other. And then, protocol sequence-IEEE 802.11p based channel access mechanism was proposed, which combines the scheduling-based and competition-based mechanism to completing the standard of IEEE 802.11p. Through simulation with MATLAB, it shows that protocol sequence-IEEE 802.11p based channel access mechanism can tradeoff the performance between UI-based and IEEE 802.11p-based ones in user average throughput and average packet delay, which has important theory meaning and practical value.
