eHER-MAC: An Enhanced HER-MAC for Vehicular Ad-hoc Networks

To enhance the saturation throughput in Vehicular Ad-hoc NETworks (VANETs), one of solutions is a variable Control CHannel Interval (CCHI) multichannel Medium Access Control (MAC) scheme. Recently, the HER-MAC is more reliable and efficient in both the safety message broadcast and the service channel utilization. HER-MAC which requires lower time for reservation period than IEEE 1609.4 improves the throughput of non-safety message. In this paper, we propose a new algorithm, named eHER-MAC, which reduces the length of reservation period. The eHER-MAC protocol supports more efficient in the safety message broadcast. The simulated result shows that eHER-MAC has lower average number of frames to re-sizing the reservation period and average number of time slots for reservation period than HER-MAC with the same nodes. Key word: MAC, Control Channel Interval, HER-MAC, reservation period.

[1]  Huirong Fu,et al.  An IEEE 802.11p-Based Multichannel MAC Scheme With Channel Coordination for Vehicular Ad Hoc Networks , 2012, IEEE Transactions on Intelligent Transportation Systems.

[2]  Choong Seon Hong,et al.  e-VeMAC: An enhanced vehicular MAC protocol to mitigate the exposed terminal problem , 2014, The 16th Asia-Pacific Network Operations and Management Symposium.

[3]  Bernhard Walke,et al.  Towards Broadband Vehicular Ad-Hoc Networks - The Vehicular Mesh Network (VMESH) MAC Protocol , 2007, 2007 IEEE Wireless Communications and Networking Conference.

[4]  Wenhui Zhang,et al.  Car-2-Car Communication Consortium - Manifesto , 2007 .

[5]  Choong Seon Hong,et al.  HER-MAC: A Hybrid Efficient and Reliable MAC for Vehicular Ad Hoc Networks , 2014, 2014 IEEE 28th International Conference on Advanced Information Networking and Applications.

[6]  J. Miller,et al.  Vehicle-to-vehicle-to-infrastructure (V2V2I) intelligent transportation system architecture , 2008, 2008 IEEE Intelligent Vehicles Symposium.