FTTH broadband has become an inevitable trend to end for copper?
REVIEW: Although FTTH is widely recognized, but the Chinese telecom operators have a huge copper access user, taking into account the protection of existing assets, as well as more advanced, low-cost copper technology (G.fast) launch, so In the "Light of Copper" tide, there are still many operators and equipment manufacturers to support the "point of copper into gold."
Although FTTH is widely recognized, but our country has a huge copper telecom operators access to a user, taking into account the protection of existing assets, as well as more advanced, low-cost copper technology (G.fast) launch, so in the " light into the copper, "under the tide, there are still many operators and equipment manufacturers to support the" point of copper into gold. " But recently, China FTTH Forum chairman Mao Qian said that although copper access technology is constantly improving network speed, such as VDSL, G.fast (G.9701), but these technologies are rate-limited by distance, technically complex issues, and after all, but the bandwidth over fiber access, users of fiber access has become an inevitable trend to shift from copper access.
Mao Qian data provided, the number of xDSL copper still remain more than 138 million users, but also more than the number of FTTH subscribers. He pointed out: It turns out that FTTH is the ultimate development of roads, the current number of users is declining copper, copper future will disappear. In this regard, telecom operators, manufacturers and other industry chain parties is how to treat?
Fiber optic cable, copper access technologies complement
Domestic access network market, "Light of Copper" performance significantly, it means G.fast, VDSL2 and other copper technology market is shrinking? Fiber to the home is still the best choice, "point copper into gold" policy failed?
Yang: At present, the domestic market in order to access network fiber access the main light into the copper, both technological trends, but also the inevitable choice for operators in the market competitive pressures, copper technology opportunities in the domestic market should be relatively small.
Yu Gang: In the "Light of Copper" environment, the market space is greatly compressed copper access, many operators prefer to be seen as FTTH broadband access, in the new situation is the only option . But the Chinese market is huge, uneven regional development, access to complex scenes, "across the board" to take all fiber deployment will encounter many difficulties, such as fiber to the home difficult, limited network transformation fund and other issues.
Therefore, under the appropriate scene using light copper combined programs benefit operators to quickly and cost-effectively complete broadband speed, and Vectoring, G.fast other emerging technologies also ensure the copper business support capabilities as much fiber. It is always shining gold, the copper wire technology as well.
Zhao: Since 2010, FTTH broadband access market has gradually become the mainstream of the domestic construction mode, under the new accounting scenarios FTTH construction mode is expected to more than 70%, FTTB / C to keep inventory expansion, basically stopped further construction. At broadband speed background, some scenes need to meet the speed 50Mbit / s or more access, original EPON + FTTB / C is difficult to meet the demand, most parts of the transformation through FTTH optical fiber or 10G EPON + VD manner speed, VDSL2 and Vectoring and other copper access as an important supplement.
Due to the relatively short time G.fast standardization of copper quality and distance requirements, and therefore no basic domestic applications. Overall, FTTH is the best choice as well as the current broadband speed Fast home, Gigabit home, the larger local area through high-speed fiber to the home difficult 10G PON + copper supplement, can reduce household costs, the use of the existing network resources to meet the speed requirements.
More suitable for our country to actively promote fiber access
Why is this happening? Please analyze the causes and future development trend of the copper access network cost, return on investment, environment and other point of view?
Yang Guang: Integrated deployment costs significantly lower than copper or FTTH technology, a number of studies indicate the cost of deploying FTTH G.fast it may only be 1/3 to 1/2. For those financial condition is not good, but not great pressure of market competition, the market is not a fast-paced operators, copper technology can be a good short-term interim solution that can help these operators in a more a low-cost upgrade the quality of broadband services, especially in favor of retention of existing customers.
However, after copper technology has reached the limit technological potential, potential development of its technology is certainly far less fiber access technology. If the operators are facing more intense competition in the market, a faster pace of market development, promotion copper technology are likely to be difficult to keep up with the rhythm of competition in the market, thus affecting the operator's long-term competitiveness.
And in actual deployment, copper technology performance copper cable length, mass, and so have a great relationship. For example, experiments have shown that the current G.fast: Only in the case of a short length of copper (about 20m), in order to achieve more than 800Mbit / s data rates. This is the actual deployment of the operator will also have a lot of constraints, which restricts the ability of the practical application of copper technology.
For our market presence in front of the market more competitive, especially in a simple price and rate competition based, and on the other hand, budget and corporate level there is often greater flexibility. In this case, even if the initial cost of deployment of optical access is relatively high, operators will certainly choose fiber access with long-term growth potential, and actively promote the light back into the copper.
Yu Gang: shrinking market demand prevented the rapid maturing of emerging copper wire technology industry chain, resulting in cost advantages of copper can not be further reflected. However, the copper in the protection of investment, rapid deployment, reduce the difficulty of construction still has certain advantages, from the viewpoint of bandwidth, cost and other aspects of the deployment and development of copper is still worth the wait.
Zhao: in August 2013, "Broadband China" strategy plan released, which means that the construction of broadband rose from sectoral action to the national will, which is the fundamental driving force of domestic broadband construction. Driven by the policy, steady growth in domestic broadband construction, operators of investment continues to rise. In the past 10 years, after several Central Purchasing domestic carriers, the domestic FTTx build body mass amazing, PON highly sophisticated industry, costs are significantly decreased.
Currently singlet FTTH construction costs, excluding labor costs have fallen by more than 70%, in the same case the operators prefer to use FTTH construction. In addition, the broadband market competition, in addition to the three operators of the main scale construction FTTx, broadcasting and public funding have also incoming broadband market, FTTH has become a key marketing tool leveraging market.
China Mobile building FTTH burden small
China Telecom, China Unicom has a large number of DSL users, consider asset protection for existing users, thus promoting active fiber, is it as good as China Mobile? Currently the access network market, the three operators to build networks characteristics? What are the needs of the second half?
Yang: China Mobile as a latecomer in the market, and financial strength is strong, to take a more aggressive deployment strategy is to be expected. The broadband access has always been China Telecom and China Unicom's advantages in the field, they will inevitably have to face competitive pressure to cope with. Especially in the current market, China Mobile, China Mobile's 4G business has Yiqijuechen, China Telecom and China Unicom have missed if the event in the broadband business, then the situation will be very difficult, so China Telecom and China Unicom for FTTH, We have also taken a positive attitude to promote, in hopes of maintaining market leadership.
In addition, the current government reduce costs in terms of speed requirements will facilitate their access to accelerate the pace of deployment of optical fiber. For example, China Telecom earnings in 2014 particularly stressed the need to increase investment in fiber broadband, the coverage of FTTH by 2014 53 million raised to 180 million.
In building the demand side, the three operators target is quite similar. Common goal is to improve the penetration of FTTH, and to promote the deployment of 50Mbit / s or 100Mbit / s ultra-high-speed access networks. The difference may reflect more between different operators in the business model and value-added services, which is the underlying network technology needs should have little effect, but may be back-end business support system to produce the new requirements.
Yu Gang: operators in terms of promoting the fiber to the home is very positive, but subject to limited construction funds, especially in the current LTE also need to have a lot invested in the background, fiber access after spurt of development a few years ago, operators Suppliers time investment of construction funds need to gradually recover from broadband tariff, so now the pace has slowed. Also completed in advance of the construction of the territory belongs to the entire region is relatively easy to build, and the rest of the areas are hard nut to "Hard," home is difficult existence, construction difficulties and many other issues.
Zhao: China Telecom, China Unicom in the past few years, "Light of Copper", based on the end of 2014 started the "light change" campaign, the goal is to complete the whole network PSTN network back and some DSL upgrade FTTH by the end of 2016, the eventual establishment end all-optical network. Due to historical reasons, China Mobile DSL fewer users, only a small number of early CRC layout.
Therefore, China Mobile in terms of building FTTH high starting point, less the burden of the past few years, the proportion of Chinese mobile broadband FTTH construction of up to 90%. At broadband speed drop charges background, the three operators to compete in the broadband field will continue, whether it is China Mobile's high starting point FTTH, or China Telecom, China Unicom, promoting large-scale "light to change," the ultimate goal is to achieve FTTH Access.
According to "Broadband China 2015" special action plan calls for the year 2015 to achieve the new FTTH covering 80 million households, and promote a number of cities to become the first "all-optical network city", the new 14,000 administrative villages through broadband. Investment, in 2015 the network construction investment is not low 430 billion yuan; the next three years for basic broadband speed network investment will not be less than 700 billion yuan. Overall, the future development of the broadband industry for the better.
Copper technology must exist in the international market
What do you think of fiber and copper access network development prospects at home and abroad? Global operators which is the main push technology?
Yang: As mentioned earlier, since the competition is more intense and there is a big budget flexibility, domestic carriers should still be the main driver of optical access. But in the international market, with G.fast as representative of the new copper technology still has some market space, but also attracted some major operators attention. Such as British Telecom BT G.fast tests have been carried out, and with Huawei, Alcatel-Lucent, Adtran and other suppliers to establish a G.fast laboratory.
Other operators, such as Deutsche Telekom, Telekom Austria, Swisscom, also have shown interest in G.fast in the near future may carry out the corresponding experimental work.
Yu Gang: either copper or fiber optic cable in the global market has a huge arena, Shanghai Bell has consistently advocated for different deployment scenarios to select the appropriate access technology. In the optical fiber or copper issue, the relationship should not be completely replaced, in many scenarios, only to combine ultra-broadband access networks in order to reduce the difficulty of deployment and achieve maximum benefit from the return on investment. In addition, the Shanghai Bell can offer the world's leading copper and fiber access technology access technology.
In copper access, Shanghai Bell to promote comprehensive vector-based VDSL2 Vectoring technology lines and G.fast technology that allows operators to provide comparable to its copper FTTH broadband users of megabytes or even G-speed bandwidth. These technologies have access to many of the world's leading network operators validate and praise.
Fiber access, Shanghai Bell provides comprehensive passive optical network access technologies, including GPON, EPON, 10GEPON, XGPON1, and support operators of various scenarios FTTx network deployment. With the further evolution of PON technology, currently being actively introduced the Alcatel-Lucent unique Universal PON access, the technology to TWDM PON standards-based, leading operators to enter the 40G PON era. In addition to supporting NGPON2 tunable wavelength, but the technology is also compatible XGPON1 and 10G EPON optical modules, allowing network operators to upgrade the early symmetric or asymmetric fixed wavelength to provide services to end users. All of this through the same piece of PON board to achieve, can greatly reduce the cost of network upgrades.
Zhao: due to differences in distribution of households, property, and other aspects of the economic base, at home and abroad there is a big difference in broadband access. European countries generally use FTTx + VDSL / G.fast etc. flexible access, FTTH gradually warming up, copper is still very strong vitality; US broadband coaxial cable access market accounted for more than 50%, including coaxial cable, power lines, etc. Access technology is constantly upgrading and evolution; broadband Korea, Japan, Singapore and other countries and Hong Kong, China rapidly is the mainstream in the long ago FTTH access technology, the future, this trend will continue.
2014 Ministry of FTTH implementation of new standards, all new buildings to meet the requirements of urban FTTH access, so the future of the city is still a FTTH-based, some developed regions adopt 10G EPON or 10G GPON FTTH construction meet gigabit home, Gigabit into prices.
In addition, the use of higher-speed 40G TWDM-PON to meet future ultra-wide access is also on the horizon. In the vast rural country, due to economic conditions, geographical terrain and many other reasons, FTTH is also impossible, "one size fits all" coverage, using FTTB / C include access to wireless coverage, etc. will still exist in large numbers to meet the basic rural 10 ~ 20Mbit / s access needs.
For the next generation access networks, the flames of communication launched Access 2.0 overall solution to achieve EPON / GPON / 10G full coverage EPON / 10G GPON / 40G TWDM-PON and 100G PON access; ubiquitous support Backhaul and Fronthaul accuracy bearer; achieve network monitoring via OLT precision intelligent detectors. ODN customers are most concerned about aspects flames intelligent ODN technology to lead the industry, combined with OTDR technology to achieve accurate scheduling and accurate identification of existing network resources to the access network to become more intelligent.