원문정보
초록
영어
Due to the broad prospect of Vehicular Ad hoc Networks (VANETS) on road safety, traffic management and entertainment applications, data transmission technology of VANETS has been became the focus of the study. However, dynamic topology changes and vehicle move speed of VANETS results in link break of workshop communication, which reduces the reliability of the link. This paper presents the cooperative communication mechanism to improve the reliability of the communication link and ease the wireless road deterioration caused by vehicle movement. Based on the ADHOC MAC scheme, cooperative ADHOC MAC scheme is proposed referred as COOMACP. In COOMACP, once the data packet unsuccessfully transmitted to the destination node, the neighbor nodes will use the unoccupied slot to offer cooperative pattern and retransmit data. Through the theoretical analysis, the probability of cooperative mode is proposed. Theoretical analysis and simulation results show that COOMACP improves the probability of successful transmission of data packets and improves the system throughput.
목차
1. Introduction
2. System Model
A. Network topology and channel model
B. Neighbor Nodes
C. Channel Access
2. CAH-MAC Scheme
A. Frame Information
B. Cooperation Between Neighboring Nodes
C. COH and Cooperation Confirmation
3. CAH-MAC Experiments and Analysis
A. Node Distribution
B. Distribution of the Number of Neighbor Nodes
C. Slot type and Distribution
D. Cooperation Start
E. Throughput Analysis
F. Simulation Results
4. Conclusion
References