Title :
MARR-ALOHA: A mobility adaptive variety of RR-ALOHA for vehicular ad-hoc networks
Author :
Liu, Ruilin ; Xiang, Yong ; Yang, Yanqing
Author_Institution :
Dept. Comput. Sci. & Technol., Tsinghua Univ., Beijing, China
Abstract :
Although many Distributed Time-scheduling MAC algorithms are under evaluation for vehicular Ad-hoc networks (VANET), they are still not fully applicable for VANET with requirements of transmission reliability and efficiency. In this paper, a mobility adaptive variety of RR-ALOHA is proposed to adapt to the diversity of node density and contention severity in VANET. By introducing CSMA into slot and making full use of 3-hops channel state, the proposed schema outperforms RR-ALOHA in several aspects. NS-2 simulation results show that the novel protocol improves the speed of Basic Channel (BCH) reservation as well as the quality of slot allocation.
Keywords :
access protocols; carrier sense multiple access; telecommunication network reliability; vehicular ad hoc networks; 3-hops channel state; ALOHA protocol; BCH reservation; CSMA; MARR-ALOHA; NS-2 simulation; VANET; basic channel reservation; contention severity; distributed time-scheduling MAC algorithms; mobility adaptive variety; node density; slot allocation quality; transmission efficiency; transmission reliability; vehicular ad hoc networks; Collision avoidance; Decision support systems; Multiaccess communication; Reliability; Resource management; Safety; Simulation; Collision Avoidance; MAC; RR-ALOHA; VANET;
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2012 2nd International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4577-1414-6
DOI :
10.1109/CECNet.2012.6201688
