SCTP和OLSR的跨层交互模型
Cross layer Interaction Models for SCTP and OLSR
摘要：
从有线系统到无线环境的演进为无线系统性能的改善带来了一系列挑战，因为与有线网络相比，无线系统存在许多弱点。为了实现这一目标，跨层技术被用来促进OSI模型各层之间的信息共享。在一些前人的工作中，反跨层（RCL）方法已被提出，以方便跨层概念模型的设计。该方法的优点是突出了每个跨层交互对每个协议的影响，以便更新其源代码并描述可以实现的直观收益。该方法可以应用于给定的协议栈或现有的跨层模型，以集成新的交互。在本文中，我们将RCL方法应用于在传输层使用流控制传输协议（SCTP）和在网络层使用优化链路状态路由（OLSR）的堆栈。跨层概念模型是基于新的跨层交互产生的，这些交互被提出来填充用RCL方法的应用构建的环境子系统。环境子系统的改进通过新的交互提供的性能增益来指定。影响SCTP协议的交互的实现在交互描述数组中描述。在介绍之后，本文的第二部分概述了SCTP协议。第III节涉及OLSR协议的概述。第四节是用于应用的RCL方法和不同的相互作用数组，它产生。第五节介绍了环境子系统的改进和跨层原子操作（CLAA）的性能增益的定义。
英文摘要：
The evolution from wired system to the wireless environment opens a set of challenge for the improvement of the wireless system performances because of many of their weakness compared to wired networks. To achieve this goal, cross layer techniques are used to facilitate the sharing of information between the layers of the OSI model. In some precedent works, the Reverse Cross Layer (RCL) method has been proposed to facilitate the design of cross layer conceptual models. The method has the advantage to highlight the impact of each cross layer interaction on each protocol in order to update its source code and to describe the intuitive gains that can be achieve. The method may be applied to a given protocol stack or to an existent cross layer model to integrate new interactions. In this paper, we are applying the RCL method on the stack that uses the Stream Control Transport Protocol (SCTP) at the transport layer and the Optimized Link State Routing (OLSR) at the network layer. Cross layer conceptual models are produced based on new cross layer interactions that are proposed to populate the environment subsystem built with the application of the RCL method. The improvement of the environment subsystem is specified through the performance gains provide by the new interactions. The implementation of the interactions that impact the SCTP protocol is described in the Interaction Description Array. After the introduction, Section II of this paper presents an overview of the SCTP protocol. Section III is related to the overview of the OLSR protocol. Section IV is used for the application of the RCL method and the different interaction arrays it generates. Section V presents the improvement of the environment subsystem and the definition of the performance gain of each Cross Layer Atomic Action (CLAA).
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