10G GPON: aiming at commercial use and gradually improving Author: Yang Guang Feng Jian Constant Voltage Led Driver,150W Constant Voltage Led Driver,100W Constant Voltage Led Driver,Led Driver 40W Ninghai Yingjiao Electrical Co., Ltd. , https://www.yingjiaoadapter.com
Any technology must continue to develop, and PON (passive optical network) technology is no exception. Compared with the current GPON (Gigabit Passive Optical Network) / EPON (Ethernet Passive Optical Network) application scenarios, 10G GPON technology application scenarios are more extensive. Compared with 10G EPON, 10G GPON has more detailed standards in certain fields, such as mobile base station backhaul, FTTH (optical fiber to the home) with large split ratio, and enterprise customer applications. These services will enable operators to migrate more complex applications and more important customers to the 10G GPON access network. This will also accelerate the upgrade and replacement of copper access by fiber access.
Optical module is similar to 10GEPON
In the process of evolution to the next-generation PON technology, the 10GGPON and 10GEPON optical modules are similar in technology implementation, and the downstream channel 10G continuous working mode and device requirements are basically the same. This allows 10GGPON to be basically synchronized with 10GEPON in the front-end research and development of the industrial chain. "The 10GGPON downstream continuous channel optical transceiver circuit chip has matured. At present, major circuit chip manufacturers have invested and developed the 10GGPON upstream burst channel optical transceiver circuit chip. It is expected that the 10GGPON optical transceiver chip will be launched in the second half of 2010. Integrated circuit solutions. "Li Dawei, executive director and deputy general manager of Hisense Broadband Multimedia Technology Company, told reporters.
The reporter learned that currently major international manufacturers are developing solutions for EPON / GPON integration. As far as optical chips and optical modules are concerned, the solutions of the two are not much different. In the process of formulating 10GEPON and 10GGPON standards, many optoelectronic chip manufacturers have actively participated. Mitsubishi, Sumitomo, NEC, Fujitsu, etc. have successively launched corresponding optical devices suitable for 10GPON applications.
With the strong support of upstream enterprises in the industry chain, 10GGPON's standard formulation and industrialization have a solid foundation.
Standard setting is not substantially backward
GPON and EPON are a pair of competitors. In the 10G era, 10GGPON will inevitably have a competitive relationship with 10GEPON. Now the 10GEPON standard has been formulated in September 2009, and the 10GGPON standard has not yet been completed, so some people have proposed that 10GEPON standardization will lead and will gain a commercial first mover advantage. In fact, this view is relatively one-sided.
Sun Xiguang, product manager and market manager of Shanghai Bell, told reporters: "Standards are composed of a lot of content. It is somewhat one-sided that everyone understands that 10GGPON is slower than 10GEPON in standardization. The current standards published by 10GEPON are mainly at the physical layer, and other related The standards of the multi-service architecture have not yet been defined, but 10GGPON already has standards that can be referenced. We understand that the two major 10GPON standards are in rapid development and will learn from each other ’s achievements. In the end, the business process of the two will be similar. "
The reporter learned that the FSAN (Full Service Access Network Forum) organization is the maker of the GPON standard, which is mainly composed of mainstream operators, important equipment vendors and device suppliers. Among them, the operators have the absolute right to speak. With the maturity of GPON, FSAN has now transferred its energy to the research of next-generation PON technology, which is expected to be completed in June 2010. Compared with 10GEPON, the time gap is 9 months. Considering that the bandwidth provided by GPON and EPON is sufficient in recent years, the 10GGPON standard is not too late to meet the needs of operators ’GPON network upgrades, and will not drag down 10GGPON commercial use. process.
Market demand determines the commercial process
Standard setting is only one of the necessary conditions before a technology is commercialized. It is the market demand and the degree of development of the industry chain that really determine the process of technology commercialization.
Xie Yahui, Ericsson (China) Broadband Access Product Line Manager, told reporters: "The commercialization process of a technology includes multiple stages, such as technology standardization, chip ASIC (application specific integrated circuit), prototype testing, product interoperability and trial commercialization , Formal commercial deployment, etc., and technical standardization is just one of the stages. The main factor affecting the commercialization process of a technology is not its standardization process, but multiple factors including the speed of market demand development and the degree of perfection of the industrial chain. "
In terms of market applications, the deployment of EPON and GPON has regional characteristics. The current trend is that in the Asia-Pacific region, most of them are EPON solutions, while European and American telecom operators mostly use GPON solutions. But North American cable operators, they value network bandwidth and video transmission quality, so they may tend to low-cost EPON solutions. "In the application of 10GPON, we can foresee that the commercial deployment trend will be similar to EPON and GPON." Li Dawei said.
The evolution of GPON to 10G GPON
FSAN started research on the next generation of PON (NGPON or 10GGPON) in 2006. Including 10G downlink and 2.5G uplink asymmetric NG-PON1, upstream and downstream symmetric 10G NG-PON2.
Step 1: At present, FSAN has completed the NG-PON1 white paper and started the standardization of NG-PON1 in 2009. It is expected that the corresponding ITU-TG.987 standard will be completed in 2010.
Step 2: FSAN plans to release the NG-PON2 white paper in 2010. NG-PON2 will be based on high-speed WDM (Wavelength Division Multiplexing) PON, as well as some new modulation methods.
Emphasize full business support
Xie Yahui, Ericsson (China) Broadband Access Product Line Manager
â— 10GGPON is suitable for scenes with higher density and higher split ratio
â— 10GGPON adapts to operators' full-service operation needs
Now GPON's 2.5G downlink and 1.25G uplink bandwidth can meet the current requirements of operators' triple play of voice, data and video services, and 10GPON technology can provide higher access bandwidth and can be applied in higher density and higher splitting Than the scene. In particular, the upstream bandwidth specified by 10GGPON is 2.5G, which can better support upstream high-bandwidth applications, such as high-definition video surveillance, P2P (point-to-point network), etc., providing operators with a new competitive weapon to win the future broadband market competition.
The integration of the three networks will promote the integration of multiple services, which can further enrich the popularity of a variety of content and applications on broadband networks, and high-bandwidth applications represented by high-definition video will undoubtedly promote the increase in bandwidth demand and the continuous evolution and upgrade of broadband networks .
Continuing the advantages of GPON, 10GGPON will continue to pay attention to the full service support and management requirements of operators. For example, the formulation of specifications such as OMCI (a control protocol) will better help operators manage and maintain broadband access networks. In addition, 10GGPON upstream 2.5G bandwidth can also better support operators to deploy applications with high upstream bandwidth requirements to meet the continuous development of services and networks.
Widely supported by the industry chain
Li Dawei, Executive Director and Deputy General Manager of Hisense Broadband Multimedia Technology Corporation
â— 10GEPON and 10GGPON will exist in parallel for a long time
â— 10GEPON and 10GGPON have the possibility of integration and development
Comparing 10GEPON and 10GGPON is like comparing pears and oranges.
Telecom operators in the Asia-Pacific region and cable TV operators in North America prefer low-priced and practical pears according to their own situation, mainly following pear standards.
European and American telecommunications operators have been promoting high-quality oranges, and are continuing to formulate standards for oranges. It is unrealistic for them to give up oranges and like pears. So 10GEPON and 10GGPON will exist in parallel for a long time, and develop healthily.
Overall, related manufacturers and operators in the entire industry chain are actively promoting the application of 10GEPON and 10GGPON and the development of the industry chain. Since the beginning of 2007, we have cooperated with many well-known chip manufacturers in the world. In early 2008 and the second half of 2008, we have completed the development and mass production of 10GPON asymmetric optical modules and symmetric optical module products. At present, our 10GEPON products and 10GGPON products have been delivered to many major chip manufacturers and system equipment manufacturers.
With the maturity of 10GEPON and 10GGPON technologies, the industry will begin to research and develop next-generation PON technologies with higher transmission capabilities and stronger business support capabilities. It is hoped that EPON and GPON will integrate and develop.
Large-scale commercial use after 2011
Sun Xiguang, Shanghai Bell Product and Solution Marketing Manager
â— 10GGPON's multi-service architecture standard definition is relatively complete
â— The market pressure for upgrading GPON to 10GGPON is less
If you compare 10GGPON and 10GEPON, you can analyze from two aspects.
The first is the technical aspect.
The upstream bandwidth of asymmetric 10GGPON is 2.5G, while the upstream bandwidth of asymmetric 10GEPON is only 1.25G. The upstream and downstream wavelengths of 10GGPON and GPON are completely independent, but the upstream wavelengths of 10GEPON and EPON are duplicated. In this way, the OLT (optical cable terminal equipment) equipment of the central office must be completely replaced when the 10GEPON is built. . The definition of 10GGPON's multi-service architecture standard will be more complete and suitable for operators' large-scale applications. 10GEPON does not have such a standard, and operators will define enterprise standards by themselves.
The second is the market.
The market pressure for upgrading from EPON (1G downlink) to 10GEPON is huge, but the market pressure for upgrading GPON (2.5G downlink) to 10GGPON is relatively small, but the commercial time of the two is generally after 2011.
At present, there are many operators, chip companies and communication companies engaged in 10GGPON research, and their strength is relatively strong, which shows that the vitality of their industrial chain is strong. Operators will choose the upgrade path to 10GPON according to their own characteristics.
Possess finer bandwidth management capabilities
BROADLIGHT China Manager Zhang Wenbiao
â— The next-generation PON is a supplement to the existing PON, not a replacement
â— Operators' urgency for the next-generation PON needs to be observed
Compared with 10GEPON, XG-PON (another way of saying 10GGPON) that the original GPON has still has, such as finer bandwidth management, better QoS (quality assurance), and better ability to support multiple services.
The XG-PON standard evolved from the GPON standard, so the two can coexist and coexist in the network.
Although EPON was commercialized earlier in China, there is no big difference between GPON and EPON in terms of cost and maturity of the industry chain. GPON is even better in some respects. In the evolution to the next generation of PON, EPON started earlier, but it does not mean that XG-PON is too late. First of all, the XG-PON standard defined by ITU-T (International Telecommunication Union Standards Group) is relatively complete. Once completed, operators can use it without modification. 10GEPON is relatively weak in this regard.
Second, the next-generation PON is a supplement to the existing PON technology, not a replacement. Existing PON technology can already meet most of the current application scenarios, so the urgency of operators for the next-generation PON needs to be observed.
We will launch the end-to-end prototype of XG-PON1 at the end of 2010, and the complete XG-PON1 solution in 2011. 