Title :
Modeling and Analysis of MAC-Broadcasting in VANETs
Author :
Liu Hongfei ; Ma Chuanlong ; Tan Jianming ; Wang Tao ; Yuan Zhongjun
Author_Institution :
Autom. Acad., Chongqing Univ., Chongqing, China
Abstract :
An effective broadcasting protocol should satisfy driver´s needs for various transportation information which can enhance the security, comfort and convenience of journey. We propose a discrete Markov analytic model for performance evaluation of IEEE 802.11 MAC-broadcasting protocol under saturation condition for vehicular ad hoc networks in highways. Through the analysis, we can study the relationship between two groups of parameters, namely, the number of vehicle nodes, the contention windows, the hidden/exposed vehicle nodes and the communication reliability, the system throughput, the broadcasting delay. The proposed analytic model is validated by extensive simulations. Numerical results also reveal characteristics of the broadcast service. These characteristics of the broadcast service can help us design efficient broadcast protocol for broadcast various emergency transportation information.
Keywords :
Markov processes; access protocols; ad hoc networks; automated highways; broadcasting; mobile radio; road traffic; traffic information systems; wireless LAN; IEEE 802.11 MAC-broadcasting protocol; VANET; broadcasting delay; communication reliability; contention window; discrete Markov analytic model; emergency transportation information; exposed vehicle node; hidden vehicle node; highway; intelligent transportation information system; performance evaluation; system throughput; vehicular ad hoc network; Ad hoc networks; Broadcasting; Delay; Information security; Performance analysis; Road transportation; Telecommunication network reliability; Throughput; Transport protocols; Vehicles;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5302054
