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引用次数: 41
摘要
本文提出了一种基于链路的分布式多跳广播(LDMB)的多跳广播方案，在VANET (Vehicular Ad Hoc Network)中有效地广播紧急消息。LDMB中的转发方案是完全分布式的，每辆收到紧急消息的车辆首先估计自己的链路状态，然后计算等待时间，然后再转发该消息。LDMB不需要任何握手，并且可以有多个候选转发消息，从而保证了多跳广播的可靠性。仿真结果表明，与其他多跳广播协议相比，LDMB具有相近的可靠性和较低的时延。
A Multi-Hop Broadcast scheme for propagation of emergency messages in VANET
In this paper, a multi-hop broadcast scheme called LDMB (Link-based Distributed Multi-hop Broadcast) is proposed to broadcast emergency messages efficiently in VANET (Vehicular Ad Hoc Network). The forwarding scheme in LDMB is completely distributed, where each vehicle who receives the emergency message estimates its link status firstly and then computes the waiting time before forwarding this message. LDMB does not need any handshakes and there may be several candidates to forward the message which guarantees the reliability of the multi-hop broadcast. Simulation results show that LDMB can have close performance in reliability but offer lower latency compared with other multi-hop broadcast protocols.
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