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: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=678592
• 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.**

线性网络编码是为了改善网络信息传输而发展起来的一种新技术。从一般的角度来看，来自不同来源和目的地不同接收者的数据包不是逐包传输的；取而代之的是生成和发送多个分组的线性组合。通常，这种线性组合（编码的数据包）涉及随机系数的乘法，并由充当源和目的地之间转发中继的中间节点实现。正确获取必要数量的线性无关分组组合的接收器能够解码并保留预定给它的分组。目前的研究表明，网络编码可以通过提高数据吞吐量和抵御网络攻击的能力来提高网络性能。然而，网络编码确实会导致网络元素的计算压力增加（这个问题可以使用现代功能强大的处理器来解决），以及网络复杂性和可伸缩性问题的增加。***直到最近，网络和使用它们的应用程序之间才有了明确的分离。应用程序生成通过简单的套接字API发送的数据包；网络传递它们。然而，在许多情况下，应用程序可以从与网络更直接的交互中获益；例如，观察更多的当前网络状态，并获得对网络行为的更多控制。软件定义网络（SDN）定义了一种网络架构，它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。***建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（链路不可靠）以及软件定义网络（SDN）中的广播/多播信息；b)大型无线传感器网络（WSN）中网络编码和压缩感知的集成。研究的重点将主要放在网络性能上；网络稳定性的表征，优化某些性能度量（与网络吞吐量和延迟相关）的最优随机控制，以及使用网络编码与现有网络中使用的传统技术的数据系统之间的性能比较。我不会专注于优化网络代码的开发（将假设简单的随机线性编码）。***尽管暖接网络编码最近在研究界得到了广泛的应用，但尚未在工业产品开发阶段得到采用。因此，它是一个很好的研究领域，在不久的将来有望实现和部署。我坚信，这不仅是HQP培训的绝佳领域，而且对加拿大经济也具有特别重要的意义