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基于FPGA小型PTN設(shè)備中OAM的研究與設(shè)計(jì)

發(fā)布時(shí)間:2018-03-06 03:33

  本文選題:分組傳送網(wǎng) 切入點(diǎn):FPGA 出處:《武漢理工大學(xué)》2014年碩士論文 論文類(lèi)型:學(xué)位論文


【摘要】:近幾年來(lái),通信業(yè)務(wù)中的數(shù)據(jù)IP化業(yè)務(wù)呈現(xiàn)爆發(fā)性增長(zhǎng),所占比重越來(lái)越大,同時(shí)傳統(tǒng)的語(yǔ)音業(yè)務(wù)也在保持平穩(wěn)增長(zhǎng)。業(yè)務(wù)接口也從傳統(tǒng)的E1/STM-1等接口發(fā)展為FE、GE和光纖等高速接口。因此,有必要建立一個(gè)可以承載多業(yè)務(wù)的高效的網(wǎng)絡(luò),既可以傳輸傳統(tǒng)的語(yǔ)音業(yè)務(wù),又可以承載大量的多種業(yè)務(wù)。傳統(tǒng)的基于電路交換的同步數(shù)字體系SDH由于其剛性管道的特點(diǎn),不能很好地滿足IP業(yè)務(wù)的突發(fā)性等特征。在這一背景下,PTN分組傳送網(wǎng)應(yīng)運(yùn)而生。 本文的研究工作和主要成果概述如下: (1)在PTN整體設(shè)計(jì)中,本文針對(duì)FPGA豐富的IP核資源等特性,說(shuō)明了PTN設(shè)備中運(yùn)用FPGA實(shí)現(xiàn)OAM功能的可行性。同時(shí),闡述了小型PTN設(shè)備的功能特性以及各板卡的設(shè)計(jì),通過(guò)各板卡和芯片之間的聯(lián)系,說(shuō)明了PTN設(shè)備的工作原理。 (2)在FPGA的邏輯設(shè)計(jì)之前,本文研究了以太網(wǎng)幀傳輸特性以及PTN設(shè)備中OAM的相關(guān)協(xié)議,包括G.8113協(xié)議及Y.1731協(xié)議,并對(duì)其進(jìn)行了詳細(xì)的分析和總結(jié)。 (3)在FPGA的邏輯設(shè)計(jì)中,針對(duì)PTN設(shè)備中OAM的傳輸特性、功能要求以及不同的資源緊缺情況,設(shè)計(jì)了LOCALBUS總線模塊、SPI總線模塊、OAMMII收發(fā)幀處理模塊、OAM SGMII收發(fā)幀處理模塊、OAM接收和發(fā)送模塊。分別對(duì)每個(gè)模塊使用Modelsim進(jìn)行了仿真驗(yàn)證并對(duì)其做了詳細(xì)說(shuō)明,,最后進(jìn)行了板級(jí)測(cè)試以驗(yàn)證其正確性。 本文在FPGA設(shè)計(jì)中使用了SerDes高速串并轉(zhuǎn)換技術(shù)、FSM以及IP核等,解決了接收數(shù)據(jù)流的同時(shí)實(shí)時(shí)地對(duì)OAM幀進(jìn)行判斷和處理的難題。同時(shí),提出了使用FPGA完成OAM功能,替代了以往的軟件處理,提高了報(bào)文處理速率。
[Abstract]:In recent years, the data IP services in the communication services have shown explosive growth, accounting for an increasingly large proportion. At the same time, the traditional voice service is also growing steadily. The service interface has also developed from the traditional E1 / STM-1 interface to high-speed interfaces such as FEGE-fiber and so on. Therefore, it is necessary to establish an efficient network capable of carrying multiple services. The traditional synchronous digital system (SDH) based on circuit switching can transmit both traditional voice services and a large number of services. In this context, the PTN packet transport network emerges as the times require. The research work and main results of this paper are summarized as follows:. 1) in the whole design of PTN, this paper explains the feasibility of using FPGA to realize the function of OAM in PTN equipment according to the rich IP core resources of FPGA. At the same time, it expounds the functional characteristics of small PTN equipment and the design of each board card. The working principle of PTN equipment is explained by the relationship between the boards and chips. Before the logical design of FPGA, this paper studies the characteristics of Ethernet frame transmission and the related protocols of OAM in PTN devices, including G.8113 and Y.1731, and analyzes and summarizes them in detail. In the logic design of FPGA, aiming at the transmission characteristic, function requirement and different resource shortage of OAM in PTN equipment, The LOCALBUS bus module is designed. The LOCALBUS SGMII transceiver frame processing module is designed. Each module is simulated by Modelsim and explained in detail. Finally, a board level test is carried out to verify its correctness. In this paper, SerDes high-speed series-parallel conversion technology and IP core are used in FPGA design to solve the problem of real-time judging and processing OAM frame while receiving data stream. At the same time, the use of FPGA to complete OAM function is proposed. It replaces the previous software processing and improves the packet processing speed.
【學(xué)位授予單位】:武漢理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類(lèi)號(hào)】:TP393.07

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