HINOC 2.0 MAC层信道调度机制研究

发布时间：2018-11-23 20:05

【摘要】：高性能同轴电缆接入网(HINOC,High performance Network Over Coax)技术是我国在部署实施“三网融合”的背景下,面向下一代广播电视网(NGB)的发展需求,自主设计研发的新型宽带接入方案。HINOC 1.0协议已于2012年8月作为国家广播电视行业标准被发布,目前HINOC 2.0协议的研究工作正在全面开展。HINOC 2.0同时支持的用户数由32个增加至64个,物理层支持带宽也达到1Gbps,合理地利用带宽变得尤为重要,亟需研究并设计高效、合理的调度机制。本文主要研究HINOC 2.0 MAC层信道调度机制,基于协议设计有效的调度机制,并完成调度算法的设计与实现。首先,对HINOC 2.0接入技术进行了整体介绍,包括组网方式、性能指标、协议机制、样机实现方案等;其次,调研了MAC层调度算法,并对现有相关调度算法的主要机制、业务需求、性能指标进行了分析;再次,深入研究了HINOC 2.0协议MAC层信道分配机制,并对其性能及业务需求进行了详细分析;然后,在理解需求的基础上,分别提出并实现了基于预测队长和基于预测数据量的两种适用于HINOC 2.0协议的新调度算法;最后,在实际测试环境中,对新提出调度算法和已有调度算法进行了性能与业务测试,并对测试结果进行了对比和分析。测试结果表明本文提出的基于预测数据量的调度算法的带宽分配、时延特性、丢包率、业务表现等指标均优于现有算法。因此,本文设计的HINOC 2.0 MAC层调度方案可更好地满足性能与业务需求,论文工作为HINOC 2.0协议调度机制的研究提供了有意义的参考。
[Abstract]:High performance coaxial cable access network (HINOC,High performance Network Over Coax) is the development demand of next generation radio and television network (NGB) under the background of deployment and implementation of "three networks convergence" in our country. The HINOC 1.0 protocol was released as the national radio and television industry standard in August 2012. At present, the research work of HINOC 2.0 protocol is being carried out in an all-round way. The number of users supported by HINOC 2.0 increases from 32 to 64, and the physical layer supports bandwidth up to 1Gbps. it is very important to utilize the bandwidth reasonably, which needs to be studied and designed efficiently. Reasonable scheduling mechanism. This paper mainly studies the channel scheduling mechanism of HINOC 2.0 MAC layer, designs an effective scheduling mechanism based on protocol, and completes the design and implementation of scheduling algorithm. First of all, the HINOC 2.0 access technology is introduced, including networking mode, performance index, protocol mechanism, prototype implementation scheme and so on. Secondly, the MAC layer scheduling algorithm is investigated, and the main mechanism of the existing scheduling algorithms, business requirements, performance indicators are analyzed. Thirdly, the channel allocation mechanism of MAC layer in HINOC 2.0 protocol is deeply studied, and its performance and service requirement are analyzed in detail. Then, on the basis of understanding the requirements, two new scheduling algorithms for HINOC 2.0 protocol are proposed and implemented, which are based on predictive queue length and predicted data. Finally, in the actual test environment, the new scheduling algorithm and the existing scheduling algorithm are tested, and the test results are compared and analyzed. The test results show that the proposed scheduling algorithm based on predictive data is superior to the existing algorithms in terms of bandwidth allocation, delay characteristics, packet loss rate and traffic performance. Therefore, the HINOC 2.0 MAC layer scheduling scheme designed in this paper can better meet the performance and business requirements. The work of this paper provides a meaningful reference for the research of HINOC 2.0 protocol scheduling mechanism.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN915.6

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