The huge amount of content names available in Named-Data Networking (NDN) challenges both the required routing table size and the techniques for locating and forwarding information. Content copies and content mobility exacerbate the scalability challenge to reach content in the new locations. We present and analyze the performance of a proposed Controller-based Routing Scheme, named CRoS-NDN, which preserves NDN features using the same interest and data packets. CRoS-NDN supports content mobility and provides fast content recovery from copies that do not belong to the consumer-producer path because it splits identity from location without incurring FIB size explosion or supposing prefix aggregation. It provides features similar to Content Distribution Networks (CDN) in NDN, and improves the routing efficiency. We compare our proposal with similar routing protocols and derive analytical expressions for lower-bound efficiency and upper-bound latency. We also conduct extensive simulations to evaluate results in data delivery efficiency and delay. The results show the robust behavior of the proposed scheme achieving the best efficiency and delay performance for a wide range of scenarios. Furthermore, CRoS-NDN results in low use of processing time and memory for a growing number of prefixes.

中文翻译：

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评估CRoS-NDN：针对命名数据网络的基于控制器的路由方案的比较性能分析

命名数据网络（NDN）中可用的大量内容名称既挑战了所需的路由表大小，又挑战了定位和转发信息的技术。内容副本和内容移动性加剧了可伸缩性挑战，无法在新位置访问内容。我们提出并分析了一个提议的基于控制器的路由方案CRoS-NDN的性能，该方案使用相同的兴趣和数据包保留了NDN功能。CRoS-NDN支持内容移动性，并从不属于消费者生产者路径的副本中提供快速的内容恢复，因为它可以从位置分离身份，而不会引起FIB大小爆炸或假设前缀聚合。它提供了类似于NDN中的内容分发网络（CDN）的功能，并提高了路由效率。我们将我们的提案与类似的路由协议进行比较，并得出解析效率较低的效率和上限延迟的表达式。我们还进行了广泛的仿真，以评估数据传递效率和延迟方面的结果。结果表明，所提出方案的鲁棒性能在各种情况下实现最佳效率和延迟性能。此外，CRoS-NDN导致对越来越多的前缀使用较少的处理时间和内存。