异构网络中基于SCTP的单业务多流协同传输分流调度方法研究

Research on multi stream cooperative transmission and dispatching method based on SCTP in heterogeneous networks

摘要:(摘要内容经过系统自动伪原创处理以避免复制,下载原文正常,内容请直接查看目录。)

跟着收集技巧和终端装备一日千里的成长,将来的通讯收集将是一个多收集并存且互相协作的异构融会全体。异构收集多途径协同传输作为收集融会的一部门,其长处在于可以或许进步营业传输速度,灵巧应用收集资本支撑加倍丰硕的营业品种。多模终真个涌现使并行传输需求日趋增长,在基于支撑多途径并行传输的协定SCTP基本上研讨传输的分派调剂成绩成为业界配合存眷的成绩。研讨注解传输途径的差别性招致多路并传产生乱序影响并行传输吞吐量和传输时延,无线传输途径带宽和时延的动摇使乱序成绩加倍庞杂,若何应用途径特征参数制订公道的分流调剂办法减小乱序产生,施展多途径并行传输进步传输速度减少传输时延的优势是本文研讨内容。本文起首综述了现有多途径并行传输办法,并归结其局限性在于分派调剂战略根本树立在稳固的传输信道前提下,疏忽了无线信道的时变特征。其次,针对途径时延随机激发乱序成绩停止深刻剖析,指出时延散布的均值和方差将影响并行传输乱序水平。在此基本上,提出一种减小传输乱序的分派调剂办法,该办法应用途径时延散布的特征参数停止分流调剂,在无限缓存的束缚前提下,按照缓存占用几率的年夜小拔取方差小的途径归入并行传输途径,并应用时延均值停止数据包调剂,从而包管并行传输数据的有序达到。最初,针对带宽随机性影响端到端传输时延的成绩,给出一种优化端到端时延的分流调剂办法。该办法基于列队模子,侧重剖析了当带宽屈服高斯散布时对时延的影响,应用带宽散布的数字特点参数调剂各途径发送分组数来减小多路并传时各途径时延差别,从而到达减小乱序的目标。仿真成果注解,两种多途径并行传输流量分派调剂办法可以或许减小乱序水平,减少端到端传输时延。

Abstract:

Along with the skills of collecting and terminal equipment of rapid growth, future communication network will be a collection coexist and collaborate with each other in heterogeneous fusion of all. Heterogeneous collection of multi-channel cooperative transmission as part of the collection fusion and its strengths that may enhance business transmission speed and nimble application collect capital support double rich business varieties. A multimode terminal that lead to a parallel transmission demand, has become the industry's concern with the achievements in the research of SCTP transmission protocol basically support multi-channel parallel transmission based on the distribution adjustment results. Difference research notes of transmission channel and lead to multiple and generate random sequence affect the parallel transmission throughput and transmission delay, wireless transmission bandwidth and delay shake the chaos sequence scores double complex. How to use the way of characteristic parameters of formulate reasonable diffluence adjustment method reduced chaotic sequence generation, display multi-channel parallel transmission progress transmission speed reducing transmission delay of the advantage is the content of this * * *. This paper first reviews the existing multi-channel parallel transmission method, and summed up its limitations in the assignment strategy in the transmission channel transfers the root is stable under the premise of neglect, the time varying characteristics of wireless channel. Secondly, according to the way of delay stochastic excitation disorder issues in-depth analysis, pointed out that the mean and variance of the time delay spread will affect the parallel transmission order level. This basically, proposed a reduced transmission disorder distribution adjustment method and the ways to use the way of delay spread of characteristic parameters of stream transfers, in the infinite cache constraints. According to the cache occupancy small probability of select variance way placed in parallel transmission way, and application of delay mean stop data packet transfers, so as to guarantee that the parallel data transmission in order to achieve. At first, in view of the influence of random bandwidth end-to-end transmission delay performance, given an optimal end-to-end delay distribution adjustment method. The approach based on queue model and focused on analyzing the when the effect of the delay bandwidth yield Gaussian spread, spread application bandwidth digital characteristic parameters adjust the way of sending packet number reduce multi pass the path delay difference, so as to reduce the goal of disorder. The simulation results of two kinds of annotations, multi-channel parallel transmission method can reduce the flow distribution adjustment disorder level, reduce the end-to-end transmission delay.

目录:

摘要3-4
Abstract4
第一章 绪论7-13
    1.1 课题研究背景7-8
        1.1.1 异构无线网络概述7
        1.1.2 异构网络融合的关键技术7-8
        1.1.3 异构网络协同传输场景和优势8
    1.2 国内外研究现状8-11
        1.2.1 异构网络融合标准现状8-9
        1.2.2 多路协同传输研究现状9-11
    1.3 本文的研究意义及创新点11
    1.4 本文的主要工作及章节安排11-13
第二章 基于SCTP端到端多路并传机制和乱序问题13-23
    2.1 SCTP简介13-18
        2.1.1 SCTP体系结构和分组格式13-15
        2.1.2 SCTP的主要功能和工作方式15-17
        2.1.3 SCTP与TCP区别17-18
    2.2 并行多路径传输CMT18-22
        2.2.1 CMT的意义和产生的问题18-19
        2.2.2 改进的CMT发送算法19-21
        2.2.3 改进的CMT缺陷及分流算法引入21-22
    2.3 本章小结22-23
第三章 一种减小乱序的多路并行传输数据调度方法23-45
    3.1 现有的多路径传输分流机制23-29
        3.1.1 按照分流粒度分类的传输分流机制23-24
        3.1.2 非自适应和自适应传输分流机制24-28
        3.1.3 支持异构网络环境下多网协同传输的资源分配系统28-29
    3.2 并行传输乱序问题分析29-36
        3.2.1 分析模型29-31
        3.2.2 乱序问题及缓存占用概率理论模型31-33
        3.2.3 缓存占用概率研究33-36
    3.3 减小缓存占用方法36-42
        3.3.1 一种减小乱序的发端分配调度方法36-40
        3.3.2 分析与仿真40-42
    3.4 本章小结42-45
第四章 基于最小化端到端时延并行传输分配调度方法45-61
    4.1 问题描述和研究动因45-47
        4.1.1 乱序问题描述45-46
        4.1.2 传输时延相关问题46
        4.1.3 端到端可用带宽特性46-47
        4.1.4 研究动因47
    4.2 基于最小化端到端时延的多路径并行传输业务分配调度方法47-53
        4.2.1 多路径并行传输场景及模型建立47-50
        4.2.2 减小乱序的发端优化时延分流调度方法50-51
        4.2.3 优化分流调度方法总结51-53
    4.3 分析与仿真53-60
        4.3.1 性能指标53-54
        4.3.2 仿真场景54-55
        4.3.3 仿真分析验证55-60
    4.4 本章小结60-61
第五章 总结与展望61-63
    5.1 本文工作总结61-62
    5.2 未来研究方向62-63
致谢63-65
参考文献65-69
攻读硕士学位期间的科研经历69