期刊
AD HOC NETWORKS
卷 11, 期 7, 页码 2059-2068出版社
ELSEVIER
DOI: 10.1016/j.adhoc.2012.02.007
关键词
Vehicular ad hoc network; Broadcast protocol; Path diversity; End-to-end delay; Reliability
资金
- JSPS KAKENHI [23700072]
- Grants-in-Aid for Scientific Research [23700072] Funding Source: KAKEN
In vehicular ad hoc networks, many applications require a low latency and high reliability especially the safety applications. Reliable multi-hop broadcast protocols have been widely discussed recently. However, most of them use explicit acknowledgments and timeout retransmissions to provide reliability. The retransmission method incurs delays when a packet loss cannot be detected on time. Acknowledgment messages also increase the MAC layer contention time at each node. In order to provide a high reliability and low latency with a low overhead, we propose a mechanism which utilizes path diversity. In the proposed mechanism, a message is delivered through two different paths. By cooperation of these different paths, broadcast messages can be disseminated with a short delay and a high reliability compared with the acknowledgment based retransmission approach. Since the proposed mechanism does not use any explicit acknowledgment message, the message overhead is low. We evaluate the proposed mechanism using both theoretical analysis and computer simulations. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据