Location-Based Deferred Broadcast for Ad-Hoc Named Data Networking
Location-Based Deferred Broadcast for Ad-Hoc Named Data Networking
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DOI：
10.3390/fi11060139
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发表时间：
2019-06-01
期刊：
影响因子：
3.4
通讯作者：
Hong, Xiaoyan
中科院分区：
文献类型：
--
作者：
Kuai, Meng;Hong, Xiaoyan
新兴的联网和自动驾驶汽车（cav）通过移动性、大规模、新的数据采集和计算模式挑战了自组织无线多跳通信。命名数据网络（NDN）因其以信息为中心的组网方式而适合于此类车辆自组织网络。但是，在ad-hoc NDN中，兴趣包泛滥会导致广播风暴问题。现有的解决方案要么会增加冗余兴趣包的数量，要么需要对数据生产者的全局知识。为了提高ad-hoc NDN中兴趣广播的效率和性能，提出了一种基于位置的延迟广播（LBDB）方案。该方案利用位置信息在重播兴趣时设置计时器。利用ndnSIM模拟器在V-NDN网络架构中实现了LBDB。在仿真中与几种现有协议进行了比较。结果表明，与其他几种广播方案相比，LBDB在保持平均满意度的同时，改善了开销、平均跳数和延迟。该改进有助于在紧急CAV应用情况下提供及时的数据采集，以便快速响应。
The emerging connected and autonomous vehicles (CAVs) challenge ad hoc wireless multi-hop communications by mobility, large-scale, new data acquisition and computing patterns. The Named Data Networking (NDN) is suitable for such vehicle ad hoc networks due to its information centric networking approach. However, flooding interest packets in ad-hoc NDN can lead to broadcast storm issue. Existing solutions will either increase the number of redundant interest packets or need a global knowledge about data producers. In this paper, a Location-Based Deferred Broadcast (LBDB) scheme is introduced to improve the efficiency and performance of interest broadcast in ad-hoc NDN. The scheme takes advantage of location information to set up timers when rebroadcasting an interest. The LBDB is implemented in V-NDN network architecture using ndnSIM simulator. Comparisons with several existing protocols are conducted in simulation. The results show that LBDB improves the overhead, the average number of hops and delay while maintaining an average satisfaction ratio when compared with several other broadcast schemes. The improvement can help offer timely data acquisition for quick responses in emergent CAV application situations.