Application of Network Coding in Emerging Communication Networks

网络编码在新兴通信网络中的应用

• 批准号: RGPIN-2015-06459
• 负责人: Lambadaris, Ioannis
• 金额: $ 1.6万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=656489
• 关键词: Application; Network; Coding; Emerging; Communication

Linear network coding is a recent technique developed for improved network information transmission. From a general perspective, data packets originating from various sources and destined to different receivers are not transmitted on a packet by packet basis; instead multiple linear combinations of groups of packets are generated and sent. Typically, such linear combinations (encoded packets) involve multiplication with random coefficients and are implemented by intermediate nodes that act as forwarding relays between the sources and destinations. A receiver that correctly acquires a necessary number of linearly independent packet combinations is able to decode and keep the packets that were destined to it. Current research has shown that network coding may lead to improved network performance by means of increased data throughput and resilience to network attacks. However, network coding does lead to increased computational stress on network elements (an issue that can be resolved using modern powerful processors) as well as increased network complexity and scalability issues. ***Until recently there has been a clean separation between networks and the applications that use them. Applications produce packets that are sent over a simple socket API; the network delivers them. However, there are many occasions when applications can benefit from more direct interaction with the network; e.g., to observe more of the current network state and to obtain more control over the network behavior. Software Defined Networking (SDN) defines a network architecture that can provide access/programmability to the network control plane and thus enable the implementation of network coding.  ***The proposed research will concentrate on application of network coding in the following areas: a) broadcasting /multicasting information in wireless networks (with unreliable links) as well as in Software Defined Networks (SDN) and b) integration of network coding and compressive sensing in large wireless sensor networks (WSN). The focus of the research will be primarily on the networking performance; characterization of network stability, optimal stochastic control for optimizing certain performance measures (related to network throughput and delay) and comparison of performances between data systems using network coding versus traditional techniques used in existing networks. I will not focus on the development of optimized network codes (will assume simple random linear coding).***Despite the warm reception network coding has received in the research community recently, it has not been adopted at the industrial product development stage. Therefore, it is an excellent research area with promising practical implementations and expected deployment in the near future. I strongly believe that it is not only an excellent area for HQP training but also is of particular importance to the Canadian economy.**

线性网络编码是为改进网络信息传输而开发的最新技术，来自不同源且目的地为不同接收者的数据分组不是逐个分组地传输的，而是生成分组组的多个线性组合。通常，这种线性组合（编码数据包）涉及与随机系数相乘，并由充当源和目的地之间的转发中继的中间节点来实现，接收器能够正确获取必要数量的线性独立数据包组合。当前的研究表明，网络编码可以通过增加数据吞吐量和网络攻击弹性来提高网络性能，但是，网络编码确实会增加网络元素的计算压力。 （可以使用现代强大的处理器来解决这个问题）以及增加的网络复杂性和可扩展性问题***直到最近，网络和使用网络的应用程序之间已经完全分离，应用程序生成通过网络发送的数据包。简单的套接字API；然而，在很多情况下，应用程序可以从与网络的更直接交互中受益；例如，观察更多当前的网络状态并获得对网络行为的更多控制。可以提供对网络控制平面的访问/可编程性，从而实现网络编码的实施。 ***拟议的研究将集中于网络编码在以下领域的应用：a）无线网络中的广播/多播信息。 b) 大型无线传感器网络（WSN）中的网络编码和压缩感知的集成 研究重点将主要集中在优化网络性能上；某些性能指标（与网络吞吐量和延迟相关）以及使用网络编码的数据系统与现有网络中使用的传统技术之间的性能比较我不会重点关注优化网络代码的开发（将假设简单）。 ***尽管网络编码最近在研究界受到热烈欢迎，但它尚未在工业产品开发阶段被采用，因此，它是一个具有前景的实际实现和预期部署的优秀研究领域。在不久的将来，我坚信这不仅是总部培训的绝佳领域，而且对加拿大经济也特别重要。**