Provisioning 1 Gb/s symmetrical services with next-generation passive optical network technologies
Provisioning 1 Gb/s symmetrical services with next-generation passive optical network technologies
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DOI：
10.1109/mcom.2016.7402264
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发表时间：
2016-02
影响因子：
11.2
通讯作者：
R. Sánchez;J. Hernández;Julio Montalvo-Garcia;D. Larrabeiti
中科院分区：
文献类型：
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作者：
R. Sánchez;J. Hernández;Julio Montalvo-Garcia;D. Larrabeiti
服务提供商花费数十亿美元将其宽带接入网络升级到最新的接入标准。由于其速度快、覆盖范围广、面向未来，光纤已成为中长期的首选技术。与其他宽带接入技术相比，光纤的一个独特优势是它使运营商能够提供对称速率的服务。如今基于常规PON的商业报价大多在承诺信息速率的10Mb/100Mb/S之间，更高的速率被宣传为峰值速率，但未指明保证。在这篇文章中，我们专注于使用下一代PON技术为住宅用户提供对称的1 Gb/S接入，目标是以最低的成本实现临时保证。从技术和经济的角度比较了GPON、XGPON、WDM-PON和新兴的TWDM-PON四种下一代无源光网络标准接入技术。研究表明，从长远来看，如果运营商想要跟上不断增长的用户流量模式，只有TWDM-PON能够以中等成本提供几乎有保证的1 Gb/S点到点连接，而不是WDM-PON技术中提供的全专用1 Gb/S点对点连接。
Service providers spend billions upgrading their broadband access networks to the latest access standards. Fiber has become the technology of choice in the medium and long term, thanks to its speed, reach, and future-proofness. A differential advantage of fiber over other broadband access technologies is that it makes it possible for operators to deliver symmetric-rate services. Most of today's commercial offers based on regular PON range from 10 to 100 Mb/s of committed information rate, and higher rates are advertised as peak rates with unspecified guarantees. In this article we focus on delivering symmetrical 1 Gb/s access to residential users with a target temporal guarantee at the least cost using next-generation PON technologies. We compare four NG-PON standard access technologies, GPON, XGPON, WDM-PON, and the emerging TWDM-PON, from technical and economic perspectives. The study shows that if a service provider wants to keep up with the growing user traffic pattern in the long run, only TWDM-PON can provide 1 Gb/s nearly guaranteed at a moderate cost with respect to the fully dedicated 1 Gb/s point-to-point connection available in WDM-PON technologies.