家庭光纤组网技术方案探讨

doi:10.11959/j.issn.1000-0801.2021101

Abstract

Abstract:

Technical solutions for fibre-optic home networking, including ITU-T standard G.hn, PON access networks, and IEEE fibre-optic Ethernet, were introduced, and they were analyzed and compared from the aspects of technical characteristics, standardization, industrial chain, future development, etc.Proposals on home gateway location and drop fibre cable termination were also given, and the experiment results show that the proposed solution can improve the Wi-Fi coverage of the home gateway and the wireless access rate.

Key words: home networking, fibre, G.hn, fibre-optic Ethernet, PON, drop fiber cable termination

CLC Number:

TN929

Zhiyong MA. Discussion on technical solutions to fibre-optic home networking[J]. Telecommunications Science, 2021, 37(5): 170-176.

Figures/Tables 9

References 7

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[5]	IEEE. Local and metropolitan area networks- part 3:CSMA/CD access method and physical layer specifications amendment:media access control parameters,physical layers,and management parameters for subscriber access networks:IEEE 802.3ah[S]. 2004.
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	WENG J . China Telecom Co.,Ltd.,Shanghai Branch and ZTE successfully piloted the HOL scheme of whole-house optical fiber networking[Z]. STCN, 2020(5).
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对比项	类接入网方案	光以太网P2P方案	G.hn光组网方案
遵循标准	暂无，PON的自定义裁剪版	IEEE 802.3z、IEEE 802.3ah等	ITU-T G.9960、G.9961等
组网模式	P2MP	P2P	P2MP
信息点数量扩展方式	光分路器	光交换机（按需）	光分路器
光模块	PON光模块	以太网光模块	G.hn光模块
纤数和方向	单纤双向	1 000 BASE-SX：双纤双向；1 000 BASE -LX：双纤双向；1 000 BASE-BX：单纤双向	双纤双向或单纤双向
复用方式	WDM+上行TDM	双纤或单纤WDM	TDM
中心波长	下行1 490 nm；上行1 310 nm	1 000 BASE-SX：850 nm；1 000 BASE-LX：1 300 nm（多模光纤）、1 310 nm（单模光纤）；1 000 BASE-BX：1 310 nm、1 490 nm、1 550 nm	650 nm
光纤	单模石英光纤	1 000 BASE-SX：多模石英光纤、塑料光纤；1 000 BASE-LX：单模石英光纤、多模石英光纤；1 000 BASE-BX：单模石英光纤	塑料光纤
最大发光功率	以GPON Class B+光模块为例， 5 dBm	-3 dBm	0 dBm
接收灵敏度	以GPON Class B+光模块为例，-27 dBm	-19 dBm	-20 dBm
物理层理论速率（以4个从设备为例）	以GPON光口为例：上行1.25 Gbit/s，下行2.5 Gbit/s （由4个从设备共享）。	上行1.25 Gbit/s、下行1.25 Gbit/s（4个从设备互不影响）	1 Gbit/（s 由4个从设备共享）
产业链	目前为单厂商封闭方案	有成熟的基带芯片和光电模块，产业链推广容易	缺乏基带和模拟前端芯片，无成熟的可商用产品

对比项	信息箱外	塑料门信息箱	金属门信息箱
信号强度/dBm	-42	-49	-55

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Discussion on technical solutions to fibre-optic home networking

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