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Sichuan Telecom: All-Optical Networks Cross Digital Broadband Digital Divide

2017-08-04 17:20:08 Author: Wang Guojun Source:CTI ForumComment:0  Click:


Through the establishment of an all-optical network, Sichuan Telecom successfully solved the problem of multi-network parallelism and high cost, significantly reduced operating costs, created conditions for broadband fee reduction and sustainable development, and actively explored a broadband digital network. The gap, the path of sustainable and healthy development, has accumulated valuable experience for the implementation of universal broadband services throughout the world. Under the leadership of General Manager Zheng Chengkai, Sichuan Telecom always adheres to the entrepreneurial spirit of self-confidence, equality, tolerance, and openness. It encourages innovative methods to solve the difficulties encountered in the development process and helps accelerate the Sichuan “Network Strong Province” action plan. The various tasks have also made greater contributions to the full implementation of the "three development strategies" of Sichuan Provincial Party Committee and Provincial Government and the realization of Sichuan's "two major leapfrogs," and have won high praises from the Sichuan Provincial Party Committee and the provincial government.
Before 2013, Sichuan Telecom was more cautious about the construction of optical networks, especially its transformation. On the one hand, due to the large investment in optical network transformation, the willingness of users to actively upgrade optical fiber broadband is low, and the contribution of current revenue is small. Second, the transformation is difficult, not only the project scale is large, but also the problem of difficulty in admission and coordination is difficult. In particular, the transformation of all the old residential areas, the laying of fiber optic cables in the household entrance line is very difficult, the transformation efficiency is low, and the cost rises sharply.
As Sichuan Telecom is not strong enough in promoting FTTH scale, multiple access networks (DSLAM/FTTH/FTTB+DSL) have coexisted for a long time, which has increased the difficulty of the entire production closed-loop management from marketing to distribution. In the aspect of installation and installation, for the copper network, installation of personnel with telephone lines, DSLAM terminals, splitters and other tools is required. For optical networks, installation personnel need to relocate and replace the terminals, and also need to bring cutting knives. The tools such as wire and cable, quick connectors and the like greatly increase the difficulty and strength of the work of the installers.
In the process of building an all-optical network, faced with huge funding gaps and how to build networks at low cost, Sichuan Telecom has come out with a new path that can be replicated and has practical significance.
Purchasing light by selling copper, shutting down the computer room, and introducing partners to obtain funds
Copper replacement, sold copper wire for fiber
After the initial completion of the all-optical network, Sichuan Telecom, in the face of the retired copper cable resources, set up a copper cable disposal process and unifiedly entrusted a third-party auction company to organize bids on the Internet to facilitate the maximization of copper cable disposal revenue. In the entire construction process, a total of 677 million yuan in construction funds was obtained.
The computer room shuts down and revitalizes resources
With the continuous advancement of all-optical network construction, the degree of concentration and integration of network devices continues to increase. After traditional PSTN switches, DSLAMs, and other traditional devices are removed from the network, thousands of square meters of large-scale computer rooms currently require only 100 square meters. Within meters, you can even integrate traditional power, battery, transmission, data, and other professional equipment rooms into a comprehensive machine room, reducing the number of computer rooms. By the end of 2016, Sichuan Telecom had used openrooms such as wiring closets, battery rooms, and other computer rooms to open showrooms, vigorously expanding its channel scale, and making its channel share jump from 21% at the end of 2012 to 35%.
Extensive cooperation to introduce private capital
Sichuan Telecom attracts social capital and invests in the construction of joint ventures. It adopts a business cooperation model of “cooperative development, shared benefits, and joint risk sharing” with partners, and actively introduces private capital in the construction of optical networks. Partners can enjoy a certain number of years of revenue sharing to obtain return on investment. Through external cooperation, Sichuan Telecom has eased the current difficulties in the lack of self-owned broadband resources, reduced construction costs, expanded network coverage, and formed a mechanism for common development with non-governmental resources to increase the efficiency and effectiveness of market expansion.
Sichuan Telecom is also cooperating with local TV manufacturers in the province, so that the rural marketing staff of Sichuan Telecom and TV manufacturers all have marketing capabilities for telecom and TV services. 800 television sales stores across the province have uploaded IPTV experience advocacy and related posters, and have established a cooperative sales demonstration benchmarking shop in each pilot county, which not only expands the marketing channels of both parties, but also facilitates users to handle broadband services and purchase televisions. This cooperation model also integrates telecommunication and television products, lowers sales prices, allows users to truly enjoy benefits, and achieves a win-win situation for Sichuan Telecom, TV manufacturers, and end users.
Multi-measure solution to cover problems, precise investment, rapid network construction
First "broadband full view planning" method to achieve accurate planning and rapid network construction
In order to avoid blind construction and huge investment pressures, under the guidance of planning and batch construction, Sichuan Telecom pioneered the “broadband full view planning” method. According to the existing network foundation, user distribution, and characteristics of network resources, based on natural geography conditions and existing network resources, the entire network will be planned for the entire network and displayed in the form of a map to achieve rapid construction of an all-optical network. .
With full-view planning, Sichuan Telecom can use an intuitive and clear map to fully display existing network resources, including its own resources, can share shared pole resources, base station and equipment room resources, existing broadband coverage, households and Inventory distribution and other resource information. Sichuan Telecom can, in turn, differentiate its construction grades according to market demand and investment efficiency, classify and identify the plans, and adopt different investment strategies and batch construction strategies.
After continuous practice and summary of Sichuan Telecom, the full-view plan exerted tremendous benefits, saving about two-thirds of the main investment compared to conventional construction methods. The planning results are combined with the FTTx system to form a full-process control and inventory-level closed-loop management, ensuring investment and benefit control in large-scale construction.
Collaborate with the power sector to quickly cover the power pole
In the process of construction, Sichuan Telecom fully utilizes optical cables attached to optical cables, which can not only effectively reduce costs but also significantly shorten the laying time of optical fibers. However, due to the use of a steel cable suspension cable for conventional overhead cables, there is a safety hazard once it is not grounded according to the construction specifications.
In order to use power poles to accelerate the progress of fiber-optic broadband construction, Sichuan Telecom adopts new types of non-metallic overhead optical cables, effectively reducing the cost of optical cable construction and construction deployment, and improving project investment efficiency and construction efficiency. This can also prevent the steel strand from conducting, and the personnel risks caused by the metal materials in the cable. Through the promotion and application in the whole province of Sichuan, the new optical fiber cable deployment efficiency can save 30% of the time compared to the traditional steel cable hanging cable method, which greatly improves the construction efficiency.
In-home segment outsourcing encourages the construction, opening and maintenance of local residents
In order to reduce the opening and maintenance costs of the home segment, Sichuan Telecom encourages local residents to start businesses and cooperates with Sichuan Telecom to contract local broadband opening and maintenance. Sichuan Telecom is responsible for the construction and investment of trunk optical cables. Local residents are responsible for the investment of fiber-optic access. Local residents and Sichuan Telecom are divided into monthly proportions. These local residents understand the local conditions and are familiar with the local market. They have obvious advantages in the construction of pole roads, maintenance services, and market expansion. They can serve as Sichuan Telecom’s business channels, develop users, handle business, and sell terminals, and are convenient for other local users. At the same time, gain more revenue.
Coupling and cooperation, using existing optical fiber resources, OLT sinking to reduce optical network investment
Since some administrative villages in Sichuan Province are far away from towns and villages, there have been fiber optic cables or wireless base stations in the surrounding areas such as FTTN, government, education, education, monitoring, etc. Fiber optic cables have been accessible, but the size of the remaining core is not sufficient to carry the requirements of FTTH network construction. If we build a trunk fiber cable, the deployment distance will be long and the investment will be huge.
In view of this situation, Sichuan Telecom adopts a variety of ways to sink small-capacity OLT equipments to cover surrounding villages, and use the remaining optical fiber cores as OLT uplink optical cables, which can significantly reduce the construction scale of backbone optical cables, effectively reduce the investment in rural optical networks, and at the same time improve The ability to manage bandwidth resources.
"One Stone Three Birds" Sees Odd Effects
Double the space for fee reduction, and the annual average rate of broadband tariff reduction is 75%.
In May 2016, Sichuan was the first to release the “Network Strong Province” action plan. At the press conference, Zheng Chengxuan proposed to focus on improving the “network infrastructure capabilities, network and information security capabilities” to enhance information service capabilities, enrich the Internet + applications, and provide information for the common people to use, affordable, and well-used. The service will enable the Sichuan people to fully enjoy the "Network Strong Province" bonus, help Sichuan's social and economic development and improvement of people's livelihood, and further accelerate the pace of network development and upgrading.
With the completion of all-optical networks and the advancement of strong networks, traditional analog signals have become digital signals, which greatly reduces network equipment, further simplifies operation and maintenance, reduces operation and maintenance costs, improves network quality, and achieves network construction. The substantial decline in costs such as operation, maintenance, and labor has led to a reduction in broadband fees year after year. As of the end of 2016, the broadband unit price of Sichuan Telecom decreased from 7.2 yuan per megabit in 2013 to less than 1 yuan per megagram today, and the unit price of broadband dropped by 75% per year.
The speed increase space has increased tenfold, achieving the goal of “20 Mbps Start, 100 Mbps Popularity, 1 Gbps Leading”
Previously, China's copper-based broadband access rate was generally lower than 8M. However, with the rise of broadband video services, the demand for network bandwidth is getting higher and higher. With the continuous development of broadband services, the demand for network bandwidth in the future will reach 1G or even higher. After the transformation of all-optical network, Sichuan Telecom has achieved the development goal of “20Mbps start, 100Mbps popularity, and 1Gbps lead”.
Increased business innovation capabilities to avoid "chimney"
After the entire network became activiated, it became a flat all-IP network. All the original “chimney”-type services were all IP-based, and Sichuan Telecom’s new business cycle was significantly shorter than the original “chimney”. The average time required for each business to start up was only 3-6 months. The business laid the foundation for continuous innovation, opening up new business models, and adapting to rapid market changes.

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