Triple play will break the yoke of security application bandwidth

Optical Communication Forces, Bandwidth Is No Longer Issue 2011 is the first year of the Twelfth Five-Year Plan, the “Decision on Accelerating the Cultivation and Development of Strategic Emerging Industries” promulgated by the State Council and the Central Committee of the Communist Party of China on Formulating National Economic and Social Development. The two major programmatic documents of the recommendations of the Twelfth Five-Year Plan mention the new generation of information industry to the height of strategic development. Next-generation mobile networks, next-generation Internet, triple play, Internet of things, and cloud computing will become the focus of development. The development period of the “Twelfth Five-Year Plan” will be a crucial period for the development of optical fiber broadband access networks. In 2010, the “Opinions on Promoting the Construction of Optical Fiber Broadband Networks” promulgated by the State clearly defined the development plan for optical fiber broadband networks in the past three years. It is proposed that by 2011, the optical fiber broadband ports exceed 80 million, and the average access capacity of urban users will reach 8 per second. Above megabits, the average access capacity of rural users reaches more than 2 megabits per second, and commercial building users basically achieve access capacity of more than 100 megabits per second. In 3 years, the investment in optical fiber broadband network construction exceeded 150 billion yuan, and new broadband users exceeded 50 million. During the “Twelfth Five-Year Plan” period, the main tasks for the development of optical fiber broadband access networks include aggressively promoting trial commercialization of new technologies such as 10G PON and WDM PON, meeting the FTTH access requirement of 100 Mbit/s per user, and establishing the world’s leading optical broadband access. Network; Operators increased investment in fiber-optic broadband access networks such as FTTH/FTTO, and further reconstructed existing copper networks to promote the rapid development of the optical fiber broadband access industry.

Optical fiber is by far the best transmission medium. Compared with other access technologies (such as copper twisted pair, coaxial cable, cat5 cable, wireless, etc.), optical fiber access technology has the greatest advantage in terms of available bandwidth, and it can provide The useful bandwidth is as high as 75000 Gb/s. The fiber access network has the characteristics of good transmission quality, long transmission distance, strong anti-interference ability, high network reliability, and saving pipeline resources. This is where FTTH's development power lies. Under the leadership of China Telecom, all telecom operators are vigorously carrying out the transformation of light into copper, and the cable access network gradually transforms from copper cable to fiber access. In 2010, China Telecom further strengthened the construction of FTTH, and the scale of FTTH construction reached the scale of 1 million lines in the whole year.

FTTH, which is implemented using PON technology, provides cable TV with a dedicated bandwidth that is greater than the coaxial cable while providing efficient access to data and voice services. The PON system uses 1310nm and 1490nm wavelengths for uplink and downlink data transmission respectively. The broadcast television can directly use the 1550nm wavelength to couple into the PON system, and can provide 10Gb/s or more of TV transmission bandwidth. Not only the TV service bandwidth capability is much higher than that of the coaxial network, but also completely. It does not have any impact on TV services and channels, and it does not occupy the data service bandwidth of the PON port and does not affect the PON network data and voice services. Currently, 10G EPON technology is mature and commercially available. If 1:128 light is used, each 128 users can share 10G bandwidth, and the data bandwidth capability is much higher than that of the coaxial cable network.

FTTH technology has much higher bandwidth capability than coaxial cable network, and it has perfect standards, mature technologies, and a complete industrial ecological chain. It is even more difficult for the coaxial network in terms of networking capabilities and network management and control capabilities. With the FTTH network entering the era of large-scale deployment, optical fiber will completely replace the copper line into homes and businesses, and the last mile of the access network will undergo tremendous changes. In 2009, China was the country with the largest number of FTTH subscribers in the world. In 2009, all telecom operators continued to implement the strategy of “bright in copper and retreat” and increased FTTH investment. In addition to China Telecom’s 2.5 million-line EPON procurement and China Unicom’s 11 million-line EPON procurement, China Mobile is also active. FTTH is implemented to solve the problem of fiber access for industry users, high ARPU users, mobile business offices, and high-end commercial buildings. In addition, Shanghai, Tianjin, Beijing, Wuhan, Chongqing and other places also successively issued "Guangcheng" and "Optical fiber city" construction plans. At the end of 2009, Shanghai completed at least 500,000 optical fiber coverage for residential and 400 commercial buildings. In the three years, China Telecom will achieve broadband access to Shanghai, "100M to the home, Gigabit into the building, T-level exports." In addition, according to industry estimates, in 2009 China's FTTH users have exceeded 20 million, surpassing Japan’s ranking first in the world. From 2009 to 2010 more than one year, the comprehensive construction cost of FTTH has been reduced by 25%, the price of active equipment OLT PON has dropped by 50%, the price of ONU has dropped by 40%, and the price of end-to-end active equipment has basically reached US$100 per household. The following scales promote start-up values. With the expansion of the application scale, the price of FTTH has rapidly declined in the centralized procurement of operators, and the user installation rate is high. Therefore, FTTH will become the mainstream of broadband network construction in the industry. In addition, the rate can reach 100MB/S or even higher. 10GEPON is about to mature and can further improve the cost performance. Broadband will be extended from the core network and the metropolitan area network to the access network. The average access bandwidth of end users will increase from about 1 Mbit/s today to 10 Mbit/s, which will be higher in developed regions. Therefore, FTTH, represented by EPON/GPON, will replace DSL technology and become the mainstream of broadband access.

The acceleration of broadband access networks will in turn place tremendous pressure on the MAN and core networks. The major operators will turn 40G WDM transmission into the mainstream technology for transmission, and cooperate with the standardization and batch application of the 100G Ethernet interface of routers. They will actively test and test 100G coherent optical transmission technologies and implement trial commercial applications in hotspots. Device manufacturers, equipment manufacturers, and test instrumentation companies will invest in the development of 100G coherent optical communications with greater enthusiasm. It is expected that their maturity and cost performance will be further improved. The operators will pay more attention to the utilization efficiency and power consumption of the bearer network, and make overall plans to take into account the advantages of IP and Optics so that information processing and network transmission can reach the level of the most economical efficiency and lowest power consumption. The time for operators to start large-scale commercial deployment of 100G will come earlier due to the promotion of triple play.

Triple play needs to carry three services: voice, data, and video on a single network. With high-definition television, home security, 3D games, Internet of Things and other new services, high-bandwidth and multi-service integrated bearers place high demands on access networks. In 2009, the construction of the network accompanied by the triple play has started the construction of optical network cities of radio and television NGBs and telecom operators, and strives to establish a complete bearer network nationwide, capable of efficiently carrying high-definition televisions and digital audio. Programs, new interactive services, high-speed data access, and voice triple-play services. However, the telecommunication operator's network is not limited to triple play, and the goal of the construction of the optical network city is to refer directly to the smart city with a wider scope and concept. Building a “smart city” requires the deployment of a wired and wireless seamless link and comprehensive coverage of the communications network. This will be the beginning of operators’ convergence of 3G, optical access, Internet of Things, and triple-play converged multi-services and build a unified access platform. Chinese telecom operators are currently implementing and building the next-generation IPv6 metropolitan area network and IPv6 wireless network covering a number of cities. Based on cutting-edge technologies such as IPv6, cloud computing, and internet of things, they will build wireless broadband video surveillance and REID. Identification, mobile multimedia multilingual information services, smart home, wireless broadband instant messaging, broadband Internet audio and video and other new technologies.

China is now paying attention to broadband issues. China will provide 100M broadband access services to most households around 2020, which will bring huge space for broadband construction. According to the operator's plan, home users will achieve 20M broadband access in the next 2-3 years, and will achieve 50-100M broadband access in the future; commercial users will provide more than 100M access. From a technical perspective, based on the construction of PON-based broadband networks, operators are already familiar with the road. Whether it is FTTB, FTTH mode, or EPON, GPON product selection, each operator has a more mature guidance program.