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> <a href="/info/articlelist/special/eda/type/3">業(yè)界動(dòng)態(tài)</a> > GPON EPON之爭(zhēng)再升溫芯片格局或?qū)⒏淖?/p> </div> </div> </div>   <script src="https://forum.eepw.com.cn/jscontent/wenzilian" type="text/javascript"></script>  <div class="tjtld79" id="container"> <section> <article> <h1>GPON EPON之爭(zhēng)再升溫芯片格局或?qū)⒏淖?/h1> <div id="xlltnp3" class="authorTimeSource"> <span>作者：</span> <span>時(shí)間：2009-07-24</span> <span>來(lái)源：中國(guó)電子報(bào)</span> <link rel="stylesheet" type="text/css"/> <span style="float:right; width:130px;margin-right:0px; text-align:right;"> <div id="nff3xhf" class="nav0"> <ul> <li><a href="javascript:void(0);"><img src="http://www.ex-cimer.com/event/action/images/icon_add_4.png" width="20" border="0" align="absmiddle" />加入技術(shù)交流群</a> <ul> <li style="text-align:center;"><img src="http://www.ex-cimer.com/event/company/images/code_1.jpg" width="130"><br />掃碼加入<br />和技術(shù)大咖面對(duì)面交流<br />海量資料庫(kù)查詢</li> </ul> </li> </ul> </div> </span> <span 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/></a></iframe> </div> <span id="contentlabels" style="font-size:14px;"><p>　　<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/3G"><em>3G</em></a>時(shí)代的到來(lái)，將大大促進(jìn)對(duì)網(wǎng)絡(luò)帶寬的需求，而無(wú)源光網(wǎng)絡(luò)(PON)這種點(diǎn)對(duì)多點(diǎn)的第二代<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/FTTH"><em>FTTH</em></a>(光纖到戶)技術(shù)，作為一種提供高速寬帶服務(wù)的優(yōu)秀替代產(chǎn)品，具有成本低、壽命長(zhǎng)、距離遠(yuǎn)等特點(diǎn)，因此受到業(yè)界的推崇。隨著國(guó)內(nèi)三大運(yùn)營(yíng)商各自加速啟動(dòng)<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/3G"><em>3G</em></a>網(wǎng)絡(luò)建設(shè)和開始相關(guān)業(yè)務(wù)的運(yùn)營(yíng)，光通信從去年以來(lái)在中國(guó)市場(chǎng)得到業(yè)界前所未有的關(guān)注，以PON形式建設(shè)的<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/FTTH"><em>FTTH</em></a>等光接入網(wǎng)絡(luò)也得到快速的啟動(dòng)。</p>本文引用地址：<a href="http://www.ex-cimer.com/article/96557.htm">http://www.ex-cimer.com/article/96557.htm</a> <p>　　中國(guó)市場(chǎng)目前主流采用的<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/EPON"><em>EPON</em></a>(以太網(wǎng)無(wú)源光網(wǎng)絡(luò))技術(shù)，是PON中兩大主要網(wǎng)絡(luò)建設(shè)方式之一。中國(guó)電信、中國(guó)聯(lián)通多次招標(biāo)，<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/EPON"><em>EPON</em></a>近兩年得到了快速發(fā)展。中國(guó)聯(lián)通最近又啟動(dòng)了全球規(guī)模最大的<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/EPON"><em>EPON</em></a>設(shè)備招標(biāo)，這標(biāo)志著EPON進(jìn)入了一個(gè)新的發(fā)展期。除了中國(guó)之外，國(guó)際上采用EPON的還有日本、韓國(guó)等，其中日本最早開始建設(shè)EPON網(wǎng)絡(luò)，并已經(jīng)開始基于它提供電視、語(yǔ)音、上網(wǎng)三重服務(wù)。而在美國(guó)、印度、歐洲等國(guó)家和地區(qū)另一種PON建設(shè)方式<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/GPON"><em>GPON</em></a>(吉比特?zé)o源光網(wǎng)絡(luò))則被作為主流。它與EPON不同，二者主要的區(qū)別在于，EPON基于以太網(wǎng)和IP協(xié)議，<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/GPON"><em>GPON</em></a>則可以支持ATM、TDM、SONET/SDH、以太網(wǎng)等多種協(xié)議，下行速率和分流比也不同。業(yè)界通常認(rèn)為，相比EPON控制器，由于更高的集成度，<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/GPON"><em>GPON</em></a>控制器在提高帶寬的同時(shí)能支持多種業(yè)務(wù)，但GPON的建設(shè)成本被認(rèn)為太高，而且以前被認(rèn)為技術(shù)不夠成熟。采用哪種PON一直是業(yè)內(nèi)爭(zhēng)論的焦點(diǎn)。</p> <p>　　近來(lái)，隨著國(guó)內(nèi)光接入網(wǎng)的大發(fā)展，GPON與EPON之爭(zhēng)又熱鬧起來(lái)，兩大陣營(yíng)均據(jù)理力爭(zhēng)，隨著GPON日趨成熟，最近似乎GPON的呼聲逐漸高起來(lái)，關(guān)于GPON的成本是否過高的問題又被廠商拋出來(lái)爭(zhēng)論。支持者認(rèn)為GPON芯片的高集成度可不用外接其他芯片而同時(shí)支持多種業(yè)務(wù)，從長(zhǎng)期來(lái)看，成本并不高于EPON。但EPON支持者則普遍認(rèn)為GPON提供的功能，EPON也都可以提供，整體成本還是優(yōu)于GPON。而從運(yùn)營(yíng)商來(lái)看，除了EPON之外，他們的GPON也都開始試點(diǎn)，中國(guó)電信、中國(guó)聯(lián)通、中國(guó)移動(dòng)都不例外。因此運(yùn)營(yíng)商的態(tài)度似乎現(xiàn)在也不確定，這給PON市場(chǎng)發(fā)展帶來(lái)了變數(shù)。</p> <p>　　從PON芯片供應(yīng)商來(lái)看，GPON與EPON市場(chǎng)格局則有很大的不同，目前在中國(guó)EPON的主流供應(yīng)商只有三家，即PMC-Sierra、Teknovus和Cortina，這三家供應(yīng)商占了全部的市場(chǎng)。而GPON的芯片供應(yīng)商則有Broadlight、PMC-Sierra、Broadcom、Marvel、Cortina、Hisilicon、Infineon、Ikanos等多家，最近芯片巨頭博通宣布今年將向中國(guó)市場(chǎng)推出GPON芯片，支持GPON的發(fā)展。而據(jù)稱，設(shè)備企業(yè)自身也開始研發(fā)和使用自己的GPON芯片和方案，比如有的設(shè)備企業(yè)采用FPGA(可編程邏輯門陣列)技術(shù)在開發(fā)GPON方案。而這一趨勢(shì)是否將使GPON的成本更為降低，則需要觀察，不管怎樣，設(shè)備企業(yè)自身研發(fā)PON芯片對(duì)于芯片企業(yè)來(lái)說，將是一個(gè)新的挑戰(zhàn)。</p> <p>　　但EPON在中國(guó)有先入為主的優(yōu)勢(shì)，目前10GEPON在中國(guó)已經(jīng)開始大規(guī)模建設(shè)，從這點(diǎn)看，要領(lǐng)先于GPON的布局。GPON是否能大規(guī)模啟動(dòng)，就要看產(chǎn)業(yè)鏈的支持程度了。</p> <p>　　但GPON的興起，無(wú)疑將改變中國(guó)PON芯片的市場(chǎng)格局，將使中國(guó)PON芯片的供應(yīng)商從3家增加到10家甚至更多。</p> <p>　　中國(guó)的PON市場(chǎng)正在進(jìn)入一個(gè)新的關(guān)鍵時(shí)期，它的趨向?qū)㈥P(guān)系到相關(guān)芯片企業(yè)在中國(guó)市場(chǎng)的地位，如何在中國(guó)市場(chǎng)抓住新的機(jī)遇，將是他們必須認(rèn)真思考的問題。</p> <p>　　從另一個(gè)角度看，無(wú)論是GPON還是EPON芯片的供應(yīng)商，其中都沒有國(guó)內(nèi)企業(yè)，這不能不說是一個(gè)遺憾，除了很少的企業(yè)可以提供光收發(fā)芯片之外，國(guó)內(nèi)在光通信的PON核心芯片上幾乎是一片空白。而我國(guó)的通信市場(chǎng)將是世界上最大的市場(chǎng)之一，從加強(qiáng)核心技術(shù)這個(gè)角度來(lái)說，自主的光通信核心芯片值得期待。</p></span>  <div class="tnn9phh" id="coverDiv" class="article_reg" style="width:100%;overflow:hidden;display:none;z-index:10;position:absolute;left:0;background:#fff;"> <center> <img src="https://webstorage.eepw.com.cn/images/display/reg.jpg" border="0" usemap="#Map" /> <map name="Map" id="Map"> <area shape="rect" coords="133,235,319,253" target="_blank" /> <area shape="rect" coords="132,315,319,335" /> </map> </center> </div>  <span id="hdvppxn" class="hAd8"> <br></span>   </div> </article> <div id="7dl9dbn" class="clear"></div> <br/> <div id="r3dr93v" class="hAd6"> <div class="x9vzxv3" id="relA" style="width:auto;height:auto;"> <ul> <li>  <iframe id='af71d594' name='af71d594' 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