Hello, everyone!
Today, I would like to share with you a First part article on FTTH-PON networks – Standardization and advancement.
IEEE—as facet of Ethernet technology—and the Technological Standardization Division of the International Telecommunication Union work together to standardize FTTH-PON systems (ITU-T).
The ITU-T has generally catered to the demands of major operators, including a focus on network monitoring and administration.
G.988 and G.997.1 are ITU-T Recommendations that cover the unified management of FTTH-P2P, FTTH-PON, G.fast, VDSL2, and ADSL systems, which is significant for incumbent operators who use both copper and fiber networks.
The extensive IEEE 802.3 Ethernet standard, on the other hand, is geared at quick, low-cost deployment in a variety of contexts, encompassing core and metropolitan networks, server farms, LANs, and so on. A distinct, comparatively new 1904.1 standard governs EPON and 10G EPON network maintenance and management.
In accordance with demand evolution, the major orientation of advancement is the expansion of system capacity by regular launch of innovative active equipment (Below Figure 1), whereas the passive fiber network is kept. Below Table 1 provides an overview.
Figure 1. shows the progression of OLT band1idth over time. The adoption of NG-EPON has yet to be determined.
Although various standards allow for significant split ratios up to 1:256, the necessity to reuse existing passive network as well as increased demand for 1 Gb/s services whilst OLT functions at 10 Gb/s or 2.5 Gb/s put them around 1:16 and 1:64.
Remarked: (i) XG-PON too is regarded as NG-PON1;
(ii) ITU-T Recommendations are provided in series, e.g., G.987, G.987.1, and so forth;
(iii) all IEEE standards, which were once distinguishable, have become part of 802.3;
(iv) date of standardization refers to first document; (v) GPON capacity data refer to dominant "recommended method" variant.
Table 1 describes the correlation of FTTH-PON systems that are currently in use or are scheduled for implementation.
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