• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Space-Based and Situated Computing >Impact of node density and TTL in vehicular delay tolerant networks: performance comparison of different routing protocols
【24h】

Impact of node density and TTL in vehicular delay tolerant networks: performance comparison of different routing protocols

机译：节点密度和TTL在车辆延迟容差网络中的影响：不同路由协议的性能比较

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this work, we evaluate the performance of different routing protocols in vehicular delay tolerant networks (VDTNs). We study the impact of vehicles density and TTL on the network performance. The simulations are conducted with the opportunistic network environment (ONE) simulator. The performance is analysed using delivery probability, overhead ratio, average latency and average number of hops metrics. The simulation results show that the increase of node density improves the network performance. In dense network scenario, the performance of epidemic and maxprop routing protocols is better because the number of opportunistic contacts between nodes increases. For spray and wait, the performance is not improved since it uses a maximum of two hops to deliver bundles. Hence, in dense networks, a bundle may have a significant delay because it can only be delivered when a relay or source node have an opportunistic contact with the destination. The increase of ttl from 30 to 120 min does not improve the performance of three routing protocols in both scenarios. Multiple-copy protocols perform better in terms of delivery probability compared with single-copy protocol. The single-copy protocol uses the highest average number of hops and higher average latency compared with multiple- copy protocols.
机译：在这项工作中，我们评估车辆延迟容忍网络（VDTNS）中不同路由协议的性能。我们研究车辆密度和TTL对网络性能的影响。使用机会化网络环境（一个）模拟器进行模拟。使用递送概率，开销比率，平均延迟和平均跳度量数分析性能。仿真结果表明，节点密度的增加提高了网络性能。在密集的网络场景中，流行病和MAXPROP路由协议的性能更好，因为节点之间的机会触点数量增加。对于喷雾和等待，性能不会得到改善，因为它使用最多两次跳来传递捆绑包。因此，在密集的网络中，束可以具有显着的延迟，因为只有在中继或源节点与目的地有机会主义的接触时才只能传送。 TTL从30到120分钟的增加不会提高两种方案中三种路由协议的性能。与单拷贝协议相比，多拷贝协议在交付概率方面表现更好。与多重复印协议相比，单拷贝协议使用最高平均跳数和更高的平均延迟。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号