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Paper Abstract and Keywords
Presentation 2014-12-18 16:00
Modification of TDMA-Based MAC Protocol VeMAC for Vehicular Ad Hoc Networks
Tomotaka Kawakami, Koji Kamakura (CIT) ITS2014-32
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a modified version of vehicular ad hoc network media access control (VeMAC) protocol for further increasing throughput. In the modified VeMAC, an additional bit is appended to the field for each time slot in the header used in VeMAC as the collision flag. Upon detecting a collision for a time slot, a node sets the collision flag for that time slot without changing the ID field and sends its packet in its acquired time slot. By receiving the packet with the collision flag, nodes notice a collision happen in the time slot. One of the nodes involved in the collision knows from its ID field that it is the node itself and therefore it continues to use the time slot. The other nodes recognize themselves as nodes that should not use the time slot, because their ID is not included in its ID field of the packet. Consequently, they release the time slot and begin by acquiring new time slots. Since not all nodes involved in the collision release the time slot in our modified VeMAC, the possibility that access collisions following the merging collision happen is reduced, compared to the original one. Simulation results show that our modified one outperforms the original one in terms of the average number of collisions and throughput.
Keyword (in Japanese) (See Japanese page) 
(in English) Vehicular Ad Hoc Networks (VANET) / Time Division Multiple Access (TDMA) / Media Access Control (MAC) / ADHOC MAC / VeMAC / Intelligent Transport System (ITS) / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 369, ITS2014-32, pp. 69-74, Dec. 2014.
Paper # ITS2014-32 
Date of Issue 2014-12-11 (ITS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF ITS2014-32

Conference Information
Committee WBS ITS  
Conference Date 2014-12-18 - 2014-12-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Kumamoto University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ITS Communications, Poster, etc. 
Paper Information
Registration To ITS 
Conference Code 2014-12-WBS-ITS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Modification of TDMA-Based MAC Protocol VeMAC for Vehicular Ad Hoc Networks 
Sub Title (in English)  
Keyword(1) Vehicular Ad Hoc Networks (VANET)  
Keyword(2) Time Division Multiple Access (TDMA)  
Keyword(3) Media Access Control (MAC)  
Keyword(4) ADHOC MAC  
Keyword(5) VeMAC  
Keyword(6) Intelligent Transport System (ITS)  
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Keyword(8)  
1st Author's Name Tomotaka Kawakami  
1st Author's Affiliation Chiba Institute of Technology (CIT)
2nd Author's Name Koji Kamakura  
2nd Author's Affiliation Chiba Institute of Technology (CIT)
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Speaker Author-1 
Date Time 2014-12-18 16:00:00 
Presentation Time 25 minutes 
Registration for ITS 
Paper # ITS2014-32 
Volume (vol) vol.114 
Number (no) no.369 
Page pp.69-74 
#Pages
Date of Issue 2014-12-11 (ITS) 


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