With the deployment and implementation of the optical transformation of broadband network, the network quality is improved, the failure rate is reduced, and the user's favorable impression is increased. At present, the formation of broadband access network is dominated by FTTH and supplemented by PON+LAN. If the future broadband access network adopts PON technology for networking, it can not only provide high-quality user experience, but also reduce enterprise operating costs and improve economic benefits. Next, this article will make recommendations for the technical development and deployment of 10G PON in light of business requirements.
What is a PON network
PON network consists of OLT, ODN and ONU. An OLT device is at the core of the network topology. It accesses multiple service networks upward and services of multiple users downward through the ODN. It is an important node for service aggregation and distribution. OLT simultaneously realizes many network management functions such as control, management, ranging and so on to the client device ONU. OLT devices are at the heart of the PON network, both in terms of their network location and their network capabilities. As more and more services such as Internet access, 4K IPTV video, smart home services, small and medium-sized enterprise private lines, IMS voice, and mobile backsend are carried on the PON network, the demand for bandwidth and the degree of refinement of management continue to increase. The development of PON technology and the deployment evolution of OLT equipment play a crucial role in the development of broadband access networks..
PON network status analysis
(1) OLT equipment deployment
The OLT equipment of domestic operators basically began to be deployed in 2006, and was mainly used for PON+DSL access in the initial stage. It has been more than 10 years since FTTH began to be deployed on a large scale in 2009. According to the slot bandwidth, overall switching capability, and PON board support, there are 2-3 generations of products running on the live network. On the live network, the switching capacity of a single slot of the main push device reaches 40 Gbit/s and supports 10 Gbit/s EPON and XG-PON1.
(2) PON technology deployment
With the gradually commercialized 10G PON technology, the PON boards configured on OLT devices in the live network are divided into EPON, GPON, 10G EPON and XG-PON, of which EPON and GPON are the main ones. Under the promotion of China Telecom and China Unicom to improve the EPON standard, the commercial use of EPON by domestic operators was about 2-3 years earlier than GPON.Before 2013, the construction was dominated by EPON, and later, due to the advantages of GPON in bandwidth, it gradually dominated the construction of OLT. From the perspective of existing network deployment, China Unicom and China Mobile's OLT equipment is mainly GPON, and China Telecom is mainly EPON.
Construction of the 10G PON began around 2015. Due to the high price of 10G optical modules, the price of 10G PON ONT is about five times that of existing EPON/GPON terminals. In the current environment where the terminal is generally donated by the operator to the customer, and the service demand is basically below 100Mbit/s, the major operators are cautious about the deployment of 10G PON applications. At present, the construction method of 10G PON is mainly applied in 10G PON+ LAN and FTTH deployment. 10G PON+ LAN is mainly a transformation of the existing cell LAN network and PON+ LAN network. On the one hand, solve the bandwidth shortage caused by the high number of access users; On the other hand, because multiple users share the price of optical modules in MDU, the overall cost does not increase much compared with PON+LAN network, so it has been applied on a scale, and technically 10G PON and XG-PON are used. The construction of 10G PON FTTH is mainly a gigabit household pilot carried out by various operators, and the main purpose is to publicize and verify the products of 10G PON FTTH.
About 10G(ten gigabit) Ethernet technology and application is the above knowledge points, about the OLT equipment mentioned in the above mentioned in Shenzhen HDV Phoelectron Technology Ltd. belongs to the popular class of communication products, such as: OLT switch, GPON OLT, EPON OLT, light Cat OLT, etc., the above OLT equipment can be used in a variety of environments, for different needs of users to provide more choices, welcome to come to understand, we will provide the best quality service.
