本文選題：星地混合網(wǎng)絡 + 通用多協(xié)議標簽交換(GMPLS)��； 參考：《西安電子科技大學》2016年碩士論文

【摘要】：星地混合網(wǎng)絡具有覆蓋范圍廣、通信距離遠、地理條件限制小、組網(wǎng)靈活和易于實現(xiàn)等優(yōu)點,是新一代通信系統(tǒng)的發(fā)展方向之一。在這種一體化融合網(wǎng)絡中,信令系統(tǒng)是不可缺少的一部分。但是,相對于地面網(wǎng)絡,星地混合網(wǎng)絡具有衛(wèi)星信道時延大與誤碼率偏高、星上資源有限和星上處理能力偏低等缺點,這對星地混合網(wǎng)絡的信令系統(tǒng)提出了更高的要求。因此,有必要對星地混合網(wǎng)絡的信令系統(tǒng)進行研究,提出適應衛(wèi)星特殊環(huán)境的信令方案。本文首先通過分析衛(wèi)星網(wǎng)絡和地面網(wǎng)絡的優(yōu)勢及其不足,概述星地混合網(wǎng)絡,并介紹星地混合網(wǎng)絡信令系統(tǒng)的研究狀況和發(fā)展趨勢;其次,比較已廣泛使用的基于流量工程的資源預留協(xié)議(RSVP-TE)和基于約束路由的標簽分發(fā)協(xié)議(CR-LDP),結合星地混合網(wǎng)絡對多種交換類型和資源預留的功能需求,說明RSVP-TE信令協(xié)議更適合于星地混合網(wǎng)絡,然后從標簽交換通道(LSP)的建立、信令消息及對象等方面對其進行詳細介紹;最后,基于RSVP-TE信令協(xié)議,本文主要完成以下工作:(1)針對衛(wèi)星網(wǎng)絡時延大,誤碼率偏高和衛(wèi)星交換節(jié)點處理能力有限的特點,改進星上信令處理方案中標簽交換路由器(LSR)和標簽邊緣路由器(LER)的功能結構;擴展應用于地面網(wǎng)絡的RSVP-TE信令協(xié)議中的部分消息,包括設計用于建立嵌套LSP的多粒度分層標簽對象和多粒度分層標簽請求對象的結構、精簡信令消息中的對象;給出多粒度LSPs(MG-LSPs)并行建立的信令流程,并分析信令消息傳遞過程中產(chǎn)生的時延。(2)根據(jù)RSVP-TE協(xié)議原型系統(tǒng)的功能要求,設計與實現(xiàn)信令系統(tǒng)框架中的RSVP-TE信令協(xié)議模塊。在分析消息結構及消息格式的基礎上,給出詳細的信令消息處理流程,并采用C/C++編程語言實現(xiàn)這一處理流程。(3)從基本的RSVP協(xié)議、MG-LSPs的建立以及標記交換等方面測試RSVP-TE協(xié)議原型系統(tǒng)的功能,并對測試結果進行分析。
[Abstract]:The space-ground hybrid network has the advantages of wide coverage, long communication distance, small geographical constraints, flexible networking and easy implementation. It is one of the development directions of the new generation communication system. In this integrated network, signaling system is an indispensable part. However, compared with the terrestrial network, the satellite channel delay and bit error rate are high, the on-board resources are limited and the on-board processing capacity is low, which puts forward higher requirements for the signalling system of the satellite-ground hybrid network. Therefore, it is necessary to study the signaling system of the satellite-ground hybrid network and propose a signaling scheme suitable for the special environment of the satellite. Firstly, by analyzing the advantages and disadvantages of satellite network and terrestrial network, this paper summarizes the satellite and ground hybrid network, and introduces the research status and development trend of satellite and ground hybrid network signaling system. Comparing the widely used resource reservation protocol based on traffic engineering (RSVP-TEP) and the label distribution protocol (CR-LDP) based on constrained routing, combining with the functional requirements of multiple switching types and resource reservation in satellite and ground hybrid networks, It is explained that RSVP-TE signaling protocol is more suitable for satellite / ground hybrid network, then it is introduced in detail from the aspects of label switching channel (LSP), signaling message and object. Finally, based on RSVP-TE signaling protocol, it is introduced in detail. This paper mainly completes the following work: (1) in view of the characteristics of the satellite network with large delay, high bit error rate and limited processing capacity of the satellite switching node, the functional structure of the tag switching router (LSRR) and the label edge router (Ler) in the on-board signaling processing scheme is improved. Some messages in RSVP-TE signaling protocol applied to terrestrial network are extended, including the structure of multi-granularity hierarchical tag object and multi-granularity hierarchical tag request object for establishing nested LSP, and the object in signaling message is reduced. The signalling flow of multi-granularity LSPsM MG-LSPs) is presented, and the delay. 2) according to the functional requirements of the RSVP-TE protocol prototype system, the RSVP-TE signaling protocol module in the signaling system framework is designed and implemented. Based on the analysis of message structure and message format, a detailed process of signaling message processing is given. The C / C programming language is used to realize the function of the RSVP-TE prototyping system from the aspects of the basic RSVP protocol, the establishment of MG-LSPs and the label exchange, and the test results are analyzed.
【學位授予單位】：西安電子科技大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TN927

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