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Support des applications multimedia dans les reseaux de prochaine generation.

机译：在下一代网络中支持多媒体应用程序。

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摘要

The first two works deal with the issues of the Fixed-Mobile Convergence (FMC). This convergence is blurring the distinction between mobile and fixed networks. Among other things, it allows a user to have access to its services, both on the cellular network (Long Term Evolution (LTE), for example) as well as on a local network (Wireless Fidelity (WiFi), for example). This is usually accomplished by equipping the user with a device with that can connect to both networks. The first issue raised in this thesis is about the decision of when to execute a handover. The two most popular mobility protocols, Mobile IP (MIP) and Proxy Mobile IP (PMIP), approach this problem with diametrically opposed views. With the first protocol, the decision is made by the user and his device. With MIP, many signaling messages are sent, wasting valuable network resources, especially at the radio access, which is the most precious part of the network. Furthermore, by not involving the network, the decision taken by the device will not be necessarily optimal. For these reasons, the PMIP protocol was proposed. Its approach is the opposite of that of MIP, the mobility being managed entirely by the network. By doing so, the device is actually shielded from any aspect of the mobility, and is fooled into thinking that it's always in its home network. This is possible by introducing new nodes in the networks that act on its behalf, which eliminates all signaling on the radio link. In addition, since the network is usually better suited to make the right decision, because of the additional information it holds, the mobility is optimized. However, the big issue that arises is that, without the intervention of the terminal, it is impossible to detect all the handover possibilities. Thus, PMIP is not a protocol that is well suited to deploy FMC.;The first article, entitled "Client-Based Network-Assisted Mobile IPv6", therefore addresses this problem by proposing a new protocol based on Mobile IP v6 (MIPv6), in which we introduce the involvement of the network. The result is a hybrid protocol that draws upon the strength of MIPv6 and Proxy Mobile IP v6 (PMIPv6). To accomplish this, two steps were required. The first consisted of a complete overhaul of the MIPv6 protocol, as in its current state, it was near impossible to make any modifications. The result is a much more lightweight protocol which provides only basic functionality. Other features were separated into modules. In the second step, we proposed a new module, which introduces a new node in the network that can handle the terminal mobility. Thus, the collaboration of the terminal and the new node reduces the signaling messages and optimizes the decisions for handing over, while still offering support for FMC.;The second issue that this thesis tackles is the seamlessness of a handover between two networks. A handover is deemed seamless if it does not cause any disruption to the user's services. The applications targeted by our work are multimedia applications operating in real-time, such as IP TeleVision (IPTV) and Mobile IP TeleVision (MobileTV) (in live television mode). The problem with these applications is that when a vertical handover occurs (in the case of FMC, for example), the connection is lost and must be re-established.;The second article, entitled "Seamless handover for multicast Mobile IPv6 traffic", proposes a solution to this problem. This is accomplished by introducing a new node in the network, whose role is to buffer the lost packets while the handover is occurring. Thus, when the device reconnects, it is able to recover these packets. The user application is therefore able to proceed without interruption.;The third issue addressed in this thesis focuses on the planning of access networks, to support the high bandwidth required by multimedia applications. For the FMC to be successful, it is necessary that the local network supports the bandwidth requirements. New hybrid optical technologies have been proposed.;In a new environment, there is no infrastructure to reuse. Therefore, the consensus in such a scenario is that the best technology to deploy is the one that only uses fiber optic links, as it offers the best rates and the greatest scalability.;The planning must be dynamic and take into account the changing nature of customer demands. The third article, entitled "Dynamic Greenfield Fiber to the Home Planning", proposes a dynamic model for the network planning problem of fiber optic networks. The result is a linear integer mathematical model, which takes input parameters, such as customer demands, and produces a planning that minimizes the total cost of the network, over all of the phases. (Abstract shortened by UMI.).
机译：前两项工作涉及固定移动融合（FMC）问题。这种融合正在模糊移动网络与固定网络之间的区别。除其他事项外，它允许用户在蜂窝网络（例如，长期演进（LTE））以及局域网（例如，无线保真（WiFi））上访问其服务。这通常是通过为用户配备可以连接到两个网络的设备来实现的。本文提出的第一个问题是关于何时执行切换的决定。两种最流行的移动性协议，移动IP（MIP）和代理移动IP（PMIP），使用截然相反的视图来解决此问题。使用第一个协议，该决定由用户及其设备决定。使用MIP，可以发送许多信令消息，从而浪费了宝贵的网络资源，尤其是在无线访问中，这是网络中最宝贵的部分。此外，通过不涉及网络，设备做出的决定不一定是最优的。由于这些原因，提出了PMIP协议。它的方法与MIP相反，其移动性完全由网络管理。这样一来，该设备实际上就不受移动性任何方面的影响，并且被愚弄为认为它始终在其家庭网络中。这可以通过在代表它的网络中引入新节点来实现，从而消除无线电链路上的所有信令。此外，由于网络通常更适合做出正确的决策，因此由于它拥有更多信息，因此可以优化移动性。然而，出现的大问题是，如果没有终端的干预，就不可能检测到所有的切换可能性。因此，PMIP并不是很适合部署FMC的协议。第一篇名为“基于客户端的网络辅助移动IPv6”的文章因此提出了一种基于移动IP v6（MIPv6）的新协议，从而解决了这一问题，在其中我们介绍了网络的参与。结果是一种混合协议，利用了MIPv6和代理移动IP v6（PMIPv6）的优势。为此，需要两个步骤。第一个过程包括对MIPv6协议的全面检查，因为在当前状态下，几乎不可能进行任何修改。结果是更轻量的协议，仅提供基本功能。其他功能分为模块。在第二步中，我们提出了一个新模块，该模块在网络中引入了一个可以处理终端移动性的新节点。因此，终端和新节点之间的协作减少了信令消息并优化了切换决定，同时仍为FMC提供了支持。本文所要解决的第二个问题是两个网络之间切换的无缝性。如果切换不会对用户的服务造成任何干扰，则认为该切换是无缝的。我们工作的目标应用是实时运行的多媒体应用，例如IP TeleVision（IPTV）和Mobile IP TeleVision（MobileTV）（实况电视模式）。这些应用程序的问题在于，当发生垂直切换时（例如，对于FMC而言），连接将丢失，必须重新建立连接。；第二篇文章，“多播移动IPv6流量的无缝切换”，提出了解决该问题的方法。这是通过在网络中引入一个新节点来完成的，该节点的作用是在切换发生时缓冲丢失的数据包。因此，当设备重新连接时，它能够恢复这些数据包。因此，用户应用程序可以继续运行而不会受到干扰。本论文解决的第三个问题集中在接入网络的规划上，以支持多媒体应用程序所需的高带宽。为了使FMC成功，本地网络必须支持带宽要求。已经提出了新的混合光学技术。在新的环境中，没有可重复使用的基础结构。因此，在这种情况下的共识是，要部署的最佳技术是仅使用光纤链路的技术，因为它提供了最佳的速率和最大的可伸缩性。规划必须是动态的，并考虑到不断变化的特性。客户需求。第三篇名为“家庭规划中的动态绿地光纤”的文章提出了光纤网络规划问题的动态模型。结果是一个线性整数数学模型，该模型采用了输入参数（例如客户需求），并制定了在所有阶段中使网络总成本最小化的计划。 （摘要由UMI缩短。）。

著录项

  • 作者

    Abou-Khalil, Georges.;

  • 作者单位

    Ecole Polytechnique, Montreal (Canada).;

  • 授予单位 Ecole Polytechnique, Montreal (Canada).;
  • 学科 Engineering Electronics and Electrical.;Multimedia Communications.
  • 学位 Ph.D.
  • 年度 2013
  • 页码 128 p.
  • 总页数 128
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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