LPTP协议的设计与实现
发布时间：2019-07-01 21:12
【摘要】：随着分布式、网格以及并行等各种计算机网络技术的共同发展,云计算做为一种新的计算机网络结构产生了,同时也通过它的云桌面、云存储、云应用、云处理使我们的生活更加便利高端。当然云桌面做为一切云计算应用以及服务向用户提供接口的载体,它的实时性也就是用户的可感知度是一款云桌面在用户心目中好用与否的重要标准。然而各种图片在云计算网络下载中占着越来越多的重要比例,因为传统的网络中传递图片的方式是使用TCP进行传输,它提供一类可靠的、有序的字节流传输,也正是因为有序字节流传输这种特性,对云计算网络下载图片数据就产生了过多的约束,从而在较繁忙的网络环境中使得云桌面中的图片实时显示的用户体验变差。经过分析测试,图片传输过程中,客户端接收到的图片的质量随着时间的推移出现一种不连续性,也就是说,当部分图片数据到达云桌面客户端时,这种基于TCP的有序的字节流传递的途径会阻止云桌面客户端上层云桌面应用的对部分图片的加工和渲染。从而最终的结果就是,云桌面客户端对图片的解码、渲染就呈现出夹杂着长期闲置等待时间在内地一阵一阵的间歇性的工作,而不是随着时间的推移很平滑的进行解码渲染。这篇论文就描述轻量级图片传输协议(LPTP)的设计、实现、评估,协议主要用于对于在易于丢包的拥塞网络环境或者无线网络环境中图片传输。在云桌面客户端随着时间的推移,通过峰值信噪比的线图测量LPTP协议的可感知度,使用应用层框架和无序的应用数据单元的传递的结合,改善了客户端云桌面图片传输中用户感受到的延迟。LPTP运行于UDP上,并且实现了云桌面客户端驱动的选择可靠性,使用成熟的拥塞管理机制(CM)去适应网络的拥塞,并且可以为特定的图片压缩编码形式定制,如JEPG、JPEG2000来优化进一步的交互性和图片重构响应能力。用一个易于丢包的网络来做性能测试的环境,来证明LPTP对于促进云桌面客户端下载图片时的交互性的益处。虽然说是探索的云桌面图片传输,可是LPTP是一种有选择可靠性的单播传输协议,是一种拥有拥塞控制并且能够订制为特定应用和编码形式服务的协议。
[Abstract]:With the common development of distributed, grid and parallel computer network technology, cloud computing as a new computer network structure has emerged, but also through its cloud desktop, cloud storage, cloud applications, cloud processing makes our life more convenient and high-end. Of course, cloud desktop as the carrier of all cloud computing applications and services to provide interfaces to users, its real-time, that is, the awareness of users is an important standard for whether a cloud desktop is easy to use in the eyes of users. However, all kinds of pictures account for more and more important proportion in cloud computing network download, because the traditional way of transmitting pictures in the network is to use TCP for transmission, which provides a kind of reliable and orderly bytecode transmission, and it is precisely because of the characteristic of ordered bytecode transmission that there are too many constraints on cloud computing network to download picture data. Thus, in the busy network environment, the user experience of real-time display of pictures in the cloud desktop becomes worse. After analysis and test, in the process of picture transmission, the quality of the picture received by the client appears a kind of discontinuity with the passage of time, that is to say, when part of the picture data reaches the cloud desktop client, this TCP-based orderly bytecode stream transmission approach will prevent the processing and rendering of some pictures in the upper cloud desktop application of the cloud desktop client. The final result is that the cloud desktop client decodes the picture, rendering with a long period of idle waiting time in the mainland intermittent work, rather than decoding and rendering smoothly with the passage of time. This paper describes the design, implementation, evaluation and protocol of lightweight picture transmission protocol (LPTP), which is mainly used for picture transmission in congested network environment or wireless network environment where packet loss is easy to be lost. Over time, the perceptible knowledge of LPTP protocol is measured by peak signal-to-noise ratio (PSNR) diagram, and the delay felt by users in cloud desktop image transmission is improved by using the combination of application layer framework and disordered application data unit transmission. LPTP runs on UDP, and realizes the reliability of cloud desktop client-driven selection. The mature congestion management mechanism (CM) is used to adapt to the congestion of the network, and it can be customized for specific picture compression coding forms, such as JEPG,JPEG2000 to optimize further interaction and picture reconstruction response ability. Using a network that is easy to lose packets to do performance testing environment to prove the benefits of LPTP in promoting the interaction of cloud desktop clients when downloading pictures. Although it is an exploratory cloud desktop image transmission, LPTP is a selective and reliable unicast transmission protocol, which has congestion control and can be customized to serve specific applications and coding forms.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.04
本文编号：2508797
[Abstract]:With the common development of distributed, grid and parallel computer network technology, cloud computing as a new computer network structure has emerged, but also through its cloud desktop, cloud storage, cloud applications, cloud processing makes our life more convenient and high-end. Of course, cloud desktop as the carrier of all cloud computing applications and services to provide interfaces to users, its real-time, that is, the awareness of users is an important standard for whether a cloud desktop is easy to use in the eyes of users. However, all kinds of pictures account for more and more important proportion in cloud computing network download, because the traditional way of transmitting pictures in the network is to use TCP for transmission, which provides a kind of reliable and orderly bytecode transmission, and it is precisely because of the characteristic of ordered bytecode transmission that there are too many constraints on cloud computing network to download picture data. Thus, in the busy network environment, the user experience of real-time display of pictures in the cloud desktop becomes worse. After analysis and test, in the process of picture transmission, the quality of the picture received by the client appears a kind of discontinuity with the passage of time, that is to say, when part of the picture data reaches the cloud desktop client, this TCP-based orderly bytecode stream transmission approach will prevent the processing and rendering of some pictures in the upper cloud desktop application of the cloud desktop client. The final result is that the cloud desktop client decodes the picture, rendering with a long period of idle waiting time in the mainland intermittent work, rather than decoding and rendering smoothly with the passage of time. This paper describes the design, implementation, evaluation and protocol of lightweight picture transmission protocol (LPTP), which is mainly used for picture transmission in congested network environment or wireless network environment where packet loss is easy to be lost. Over time, the perceptible knowledge of LPTP protocol is measured by peak signal-to-noise ratio (PSNR) diagram, and the delay felt by users in cloud desktop image transmission is improved by using the combination of application layer framework and disordered application data unit transmission. LPTP runs on UDP, and realizes the reliability of cloud desktop client-driven selection. The mature congestion management mechanism (CM) is used to adapt to the congestion of the network, and it can be customized for specific picture compression coding forms, such as JEPG,JPEG2000 to optimize further interaction and picture reconstruction response ability. Using a network that is easy to lose packets to do performance testing environment to prove the benefits of LPTP in promoting the interaction of cloud desktop clients when downloading pictures. Although it is an exploratory cloud desktop image transmission, LPTP is a selective and reliable unicast transmission protocol, which has congestion control and can be customized to serve specific applications and coding forms.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.04
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1 刘浩;LPTP协议的设计与实现[D];电子科技大学;2014年
，本文编号：2508797
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