Fiber access the latest technology development direction

Thursday, January 30, 2014
From DSL to fiber to the home, the rate M from dozens to tens or even hundreds of K M, broadband access technology in ten years has undergone enormous changes. GPON has become mainstream, EPON are catching up, as well as 10G PON, etc. can bring higher bandwidth access technologies ready for use.

Booming in the current broadband networks, technology choices have been relegated to second place battle, and how to better xPON technology being applied to real network, a fiber access technology to explore the direction.

Were abandoned technology platform dispute

Is GPON or EPON, which is come in the focus of the industry's most controversial, from a technical, commercial, and maturity more than one direction, it gives a different answer. But for operators, can find a basis both for existing networks, but also take into account the future business development, while reducing OPEX solution - Huawei SingleFAN a total solution to lead the direction of the platform.

Huawei Network Product Line Access Network Product Engineer, said Wu Haijun, "SingleFAN solution advocated by the multi-play, high-capacity, less Bureau, the construction of the network concept of flat European major operators are highly recognized by reducing the CO Board points can significantly lower construction costs and network maintenance costs. "said Wu Haijun," At the same time, SingleFAN solution advocated multi-subnet, the whole scene coverage to full-service bearer PON networks, an integrated solution of choice for operators. "

It is understood, SingleFAN solution is fully equipped for the future evolution of capacity, system capacity, software architecture, business development at all levels have set aside enough capability to provide from ATM to IP, access from copper to fiber access income, from the PSTN to IMS, from IPv4 to IPv6, to NG PON from the full range of xPON smooth evolution to maximize investment protection.

The SingleFAN led EPON / GPON platform for development were also has been recognized by domestic operators, the basic requirements to become tender.

Solve management problems ODN

Development in FTTx, access layer need to create a huge fiber-optic distribution network, that ODN network. ODN high cost of network construction, the maximum total investment accounted for 50% -70%, which is the focus of investment in FTTx. At the same time, ODN is FTTx management difficult. First, it is simple compared to the P2P structure of copper, ODN use more P2MP topology, the network connecting nodes and more complex network management. Second, the optical fiber than copper sensitive and more easily damaged.

Therefore, ODN for efficient construction, operation and maintenance of essential need for a smart, accurate management solutions to ensure the ODN network are fully utilized, the effective protection of long-term investment. At present, how to ODN network of scientific management has become the major operators and the ITU-T standards organizations such as the focus of attention.

Is it possible without changing the passive properties of ODN, the ODN administration to resolve the two core issues and achieve ODN automated management? Huawei proposed iODN (Smart ODN) solution. In iODN solution, ODN intelligence products Add the following: fiber identity management, port state to collect, the port to find instructions, PDA and other visualization tools.

iODN ODN solution enables the automatic fiber optic connection information entry and management, inventory system to ensure accurate and timely information is synchronized. Meanwhile, PDA software and iODN visualization of intelligent LED indication on the device, can find the optical automation, precision operation, greatly increasing the efficiency of operation and maintenance to achieve the efficient ODN network operations and maintenance. In addition, based on the iODN architecture, based on the stock system to develop a variety of value-added applications, to achieve the construction, operation and maintenance of the whole process automated.

MPLS into the access layer

With the advance of FTTx, on the one hand, the traditional private line services along with ATM switch networks have also emerged retirement dilemma. A lot of green to be of high quality shelf-life business needs access, building access bearer if the business alone, will bring enormous burden on operators; the other hand, the traditional mode of service configuration DSLAM VLAN configuration used mainly by the VLAN ID identifies the number of (4K) limit, to the new business development and planning to bring limitations; and usually because of new business development across the entire network, resulting in a lot of work inter-departmental operations, business development and distribution efficiency are very low. To this end, the industry put forward a MPLS technology into the access layer of the vision.

Currently, Deutsche Telekom, France Telecom and other carriers have asked the future OLT devices to support this feature. Huawei's global MPLS in the previous Forum held its first show in the OLT support MPLS on the program, and simultaneously by the international authoritative testing organizations EANTC interoperability test, as this area is currently the only test of the OLT through the program, and successfully Accor and other operators in Germany, opened this feature.

As the light step by step into the back of copper, DSL access nodes and gradually move down the market share will gradually decrease. But China Telecom Corporation of the CST Director Wei Leping that, as a realization of the user access to the way the last few hundred meters, DSL at least 10 years of living space. "DSL access as the main form of home users, will co-exist for 10 years and PON."

The survival of the 10-year DSL technology will also lead a breakthrough change. VDSL2 has now been continuously optimized, multi-line using SuperMIMO technology on high-bandwidth DSL bonding technology has made significant technological breakthroughs in a shorter distance to provide higher bandwidth, so that the direction of technological development but also for copper line technology and fiber optic technology to better co-exist.

Meanwhile, in the mobile business, laying the 3G/LTE provide cost-effective backhaul solutions, copper is also introduced in the time synchronization, binding, crosstalk processing technology.
January of this year, Huawei announced the launch of the world's first DSL support 1588v2 time synchronization prototype, the product can be transmitted through the DSL line 1588v2 precision time synchronization signal, the level of the prototype test GPS accuracy. The breakthrough means that operators in the 3G/4G deployment process, the economic return has become more technology choices, to take advantage of widely deployed in the copper resources, rapid deployment of limited free GPS.

The demand for higher bandwidth, it never stopped, so technological innovation has continued, a more simple, more intelligent, more flat broadband access network has been initially formed.

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