张伟良
1,2，黄新刚
1,2，马壮
1,2
（1. 中兴通讯股份有限公司，中国 深圳 518057；2. 移动网络和移动多媒体技术国家重点实验室，中国 深圳 518055）
摘要：在50G-PON承载低时延业务的需求基础上，分析了50G-PON中安静窗口等因素带来的时延。认为可通过增加专用激活波长（DAW）来解决50G-PON中安静窗口带来的时延问题。验证测试结果表明，结合相应的带宽分配方法，基于DAW的方法能够使50G-PON系统满足承载5G前传的时延要求。
关键词：50G-PON；低时延；安静窗口；DAW
Mechanism and Application of DAW-Based Low Latency 50G-PON
ZHANG Weiliang1,2，HUANG Xingang1,2，MA Zhuang1,2
(1. ZTE Corporation, Shenzhen China, 518057; 2. State Key Laboratory of Mobile Network and Mobile Multimedia Technology, Shenzhen China, 518055)
Abstract: Based on the low latency requirement for 50G-PON, the latency introduced by quiet window is analyzed. It is considered that the delay caused by quiet window in 50G-PON can be solved by using the dedicated activation wavelength (DAW). The latency testing results show that, combined with the corresponding bandwidth allocation method, the method based on DAW can make the 50G-PON system meet the delay requirements of carrying 5G fronthual transmission.
Keywords: 50G-PON; low latency; quiet window; DAW
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