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基于CWDM/環(huán)行器技術(shù)的5G前傳承載方案研究
2021年電子技術(shù)應用第10期
杜 喆,程 明,張德智
中國電信股份有限公司研究院,上海200122
摘要: 運營商在規(guī)模建設5G前傳網(wǎng)絡時,為了節(jié)省光纖資源,大量部署了粗波分復用(Coarse Wavelength Division Multiplexing,CWDM)無源彩光設備,實現(xiàn)5G前傳3通道承載。為滿足5G多頻組網(wǎng)以及電信聯(lián)通共建共享的需求,運營商提出了包括中等波分復用(Medium Wavelength Division Multiplexing,MWDM)、細波分復用(LAN Wavelength Division Multiplexing,LWDM)、密集波分復用(Dense Wavelength Division Multiplexing,DWDM)等技術(shù)在內(nèi)的多通道承載方案。在此背景下,項目組創(chuàng)新提出了基于CWDM/環(huán)行器技術(shù)的多通道承載方案,該方案不僅實現(xiàn)產(chǎn)業(yè)鏈共享、具備國產(chǎn)化能力最高的特點,還能夠最大化降低5G前傳網(wǎng)絡建設成本。詳細介紹了CWDM/環(huán)行器方案的現(xiàn)網(wǎng)部署方案以及存在的問題。
中圖分類號: TN929.5
文獻標識碼: A
DOI:10.16157/j.issn.0258-7998.211448
中文引用格式: 杜喆,程明,張德智. 基于CWDM/環(huán)行器技術(shù)的5G前傳承載方案研究[J].電子技術(shù)應用,2021,47(10):10-15,21.
英文引用格式: Du Zhe,Cheng Ming,Zhang Dezhi. Research on 5G fronthaul transmission based on CWDM/circulator technology[J]. Application of Electronic Technique,2021,47(10):10-15,21.
Research on 5G fronthaul transmission based on CWDM/circulator technology
Du Zhe,Cheng Ming,Zhang Dezhi
Research Institute of China Telecom Co.,Ltd.,Shanghai 200122,China
Abstract: When building a large-scale 5G fronthaul network, operators have deployed a large number of CWDM passive coarse wavelength division multiplexing(CWDM)equipment in order to save fiber resources to realize 3-channel fronthaul transmission.In order to meet the needs of 5G multi-frequency networking and the joint construction and sharing of China Telecom and China Unicom, operators have proposed multi-channel solutions including medium wavelength division multiplexing(MWDM), LAN wavelength division multiplexing(LWDM), dense wavelength division multiplexing(DWDM) and other technologies.In this context, the research team innovatively proposed a multi-channel solution based on CWDM/circulator technology. This solution not only achieves industry chain sharing, has the highest localization capability, but also minimizes 5G fronthaul network construction cost. This article describes in detail the current network deployment plan of the CWDM/circulator solution and the existing problems.
Key words : 5G fronthaul network;CWDM;circulator;optical reflection

0 引言

    現(xiàn)有5G前傳采用傳統(tǒng)CWDM無源彩光技術(shù)[1]僅能規(guī)模部署O波段前6波(1 271 nm~1 371 nm)25G光模塊,滿足3通道前傳承載的需求[2]。為滿足5G多頻組網(wǎng)以及電信聯(lián)通共建共享的需求,運營商也針對性地提出了MWDM、LWDM和DWDM等多通道解決方案[3-4],但是上述方案均存在需新開發(fā)光芯片、產(chǎn)業(yè)鏈不成熟、國產(chǎn)化能力不足、價格高昂等不足。為此,項目組主導提出了CWDM/環(huán)行器方案,即基于CWDM 技術(shù)O波段前6波光模塊,并在無源復用/解復用器中引入新型環(huán)行器,實現(xiàn)由1根主干光纖完成同波長雙向傳輸,完成6通道前傳承載[5-6]。




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作者信息:

杜  喆,程  明,張德智

(中國電信股份有限公司研究院,上海200122)




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