Research Article
Mobility and QoS oriented 802.11p MAC scheme for Vehicle-to-Infrastructure communications
@INPROCEEDINGS{10.1109/ChinaCom.2011.6158239, author={lin zhang and zi Wang and Yu Liu and Teng Jiang}, title={Mobility and QoS oriented 802.11p MAC scheme for Vehicle-to-Infrastructure communications}, proceedings={6th International ICST Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2012}, month={3}, keywords={vehicular ad hoc networks (vanets) 80211p fairness delay throughput}, doi={10.1109/ChinaCom.2011.6158239} }- lin zhang
zi Wang
Yu Liu
Teng Jiang
Year: 2012
Mobility and QoS oriented 802.11p MAC scheme for Vehicle-to-Infrastructure communications
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2011.6158239
Abstract
Vehicles in Intelligent Transportation System (ITS) can communicate with other vehicles or roadside unit (RSU) within a specific area. In ITS, different services have different requirements of QoS. For delay-tolerant services, a longtime fairness should be guaranteed, which means vehicles with different speeds should have the same chance to communicate with RSU. What’s more, the throughput is a key QoS metric for delay-tolerant services. While for real-time services, a low average delay should be achieved. In this paper, we build a Mixed-Service-Mobility (MSM) model to analyze the interaction among different services under high-speed mobility condition. By adjusting the minimum contention window size of 802.11p MAC dynamically, we succeed in providing a balance between the throughput of delay-tolerant services and the average delay of real-time services on the basis of ensuring the longtime fairness of delay-tolerant services. The proposed analytical model is validated to demonstrate its accuracy and effectiveness.