Wenfeng Li
Tongji University
Network packetVehicular ad hoc networkComputer networkComputer scienceQuality of service
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Publications 4
#1Wenfeng Li (Tongji University)H-Index: 3
#2Xiaomin Ma (Oral Roberts University)H-Index: 19
Last. Qingwen Liu (Tongji University)H-Index: 13
view all 6 authors...
In a traffic jam or dense vehicle environment, vehicular ad hoc networks (VANETs) cannot meet the safety requirement due to serious packet collisions. The traditional cellular network solves packet collisions but suffers from long end-to-end delay. Third-Generation Partnership Project (3GPP) Long-Term Evolution (LTE) overcomes both drawbacks; thus, it may be used, instead of VANETs, in some extreme environments. We use Markov models with dynamic scheduling and semipersistent scheduling (SPS) to ...
25 CitationsSource
#1Xin-Lin Huang (Tongji University)H-Index: 11
#2Jun Wu (Tongji University)H-Index: 11
Last. Minghao Wu (ZTE)H-Index: 1
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In vehicular ad-hoc network (VANET), the reliability of communication is associated with driving safety. However, research shows that the safety-message transmission in VANET may be congested under some urgent communication cases. More spectrum resource is an effective way to solve transmission congestion. Hence, we introduce cognitive radio (CR) enabled VANET (CR-VANET), where CR device can detect possible idle spectrum for VANET communications and assist to timely broadcast safety-message. Giv...
22 CitationsSource
Jun 1, 2014 in IV (Intelligent Vehicles Symposium)
#1Wenfeng Li (Tongji University)H-Index: 3
#2Jun Wu (Tongji University)H-Index: 11
Last. Zhifeng Zhang (Tongji University)H-Index: 3
view all 4 authors...
In this paper, we derive application-level reliability metrics of various safety applications with worst-case settings and vehicular environments based on an accurate analytical model in one dimension vehicular communication networks. The reliability related QoS metrics in both the MAC-level and the Application-level including packet reception ratio, T-window reliability, and awareness probability are derived. Inspired by the correlation between road traffic and vehicle speed revealed by Greensh...
7 CitationsSource