Principles and precautions for the construction of urban optical fiber access networks

At present, the optical fiber access network has been widely used in urban construction. So I have studied the principles and precautions for the construction of the urban optical fiber access network. I would like to share with you here and hope it will be useful to you. With the increasingly fierce competition in the communication industry, business development is also becoming more and more diversified, the original traditional voice business began to develop rapidly to broadband data business, IP phone business. To meet the requirements of business development, it becomes increasingly important and urgent to build a good man in urban areas.

Principles of introducing Layer Networks

1) it is suitable for users with low data bandwidth requirements to access the nearest access layer.

2) for users with high data bandwidth requirements and some target users or residential areas, the original data center cannot meet the user's increase in bandwidth. In order to win time and seize the market, data users can also temporarily connect to the optical fiber access network connection layer node or even the core layer node. Star and link structures should be used to consider the point to multiple points of the PON passive optical network structure ).

Determination of inbound Node

In order to improve the utilization rate of the trunk cable, reduce the number of connections introduced by the trunk cable, and effectively improve the safety and reliability of the trunk cable, we recommend that you set up necessary optical cable transfer boxes on the trunk cable. The user-side optical cable of the optical cable transfer box can be mounted one by one according to the user's development needs. The selection of the transfer box capacity can be 288 cores. The trunk cable of the transfer box should be located at the nearest access layer node. To increase the flexibility of the optical fiber access network, some trunk fiber cores of the optical fiber cable can be connected to the junction layer node.

Scope of the inbound node of the import Layer

In principle, the data centers at the optical fiber access network layer are calculated and verified based on the overall distribution of the data centers and the specific conditions of urban road construction, population distribution, public institutions, categories, and distribution, this ensures that the coverage and number of users of the inbound node are even and balanced as much as possible. You can set multiple optical fiber connection zones under the junction node of the import layer.

If the existing data center cannot meet the needs of data introduction, the optical fiber access network node of the Introduction layer can be an aggregation layer node, which has a large coverage area in the urban area, multiple optical fiber transfer zones can be configured based on the distribution of Optical Cable routes, street conditions, population, units, and construction facilities. While considering the introduction of trunk cable, we must consider the introduction of trunk cable from the nearest data center so that the transfer box capacity can meet the needs.

Optical connections are designed for users of optical fiber access networks. Determine the scope of the transfer zone, the number of users that may be accessed and the natural demarcation condition should be determined based on the number of users and natural boundaries of enterprises, target communities, independent property management communities, family schools, street business rooms, and natural homes.