Next Generation Access Network Energy Saving Technology Research

Along with the rapid development of science and information technology, the network scale increases day by day and the network scale can’t be ignored. Network energy consumption accounts for about0.4%of total energy consumption in the world. In developed countries with high bandwidth penetration, the proportion reaches1%and has a rising trend. The theme of world nowadays is "Low carbon, Environmental Protection, Green and Sustainable Development". Combined with the shortage of energy resource, the greatly increasing power consumption of network has caused the attention of academic and industrial. They cooperate with each other to solve the challenging problems. Network energy saving research has become a hot spot in the study of both at home and abroad, and it is of great significance and practical value.Nowadays network has the trend toward mobile and individual. A variety of access means still coexist in the access level. In the access network, there are a huge number of client equipment which dispersion everywhere and consume high energy consumption with low utilization. At the beginning of the study, energy saving technology focuses more on energy-saving effect with less consideration on network performance. Our research is to establish an effective way to use the energy more efficiently while has the lease influence on network performance.In this paper, we have a research on the energy saving technology of the next generation access network with full consideration of the impact on the network performance. Our main work includes:(1) To study the trend of access network to be clear about the construction target for the network. Expounds all kinds of important energy saving technology application scene and their respective advantages and disadvantages. Divides them into device level technology, equipment level technology and network technology level from the view of application, and gives three typical examples of the multilayer techniques combined.(2) A full investigation on the application of energy saving technology for the next generation access network. Analysis heir influence respectively in the network capacity, flow, QoS, safety performance and so on. Propose the use of static and dynamic methods to reduce network traffic and maximum capacity, thus saving energy within acceptable limits.(3) Introduce the energy saving plan of optical network, realizes smooth transition to10G-network smooth transition. Then have a research on hardware and software aspects of related technologies, evaluate the clock synchronization, recovery, power consumption, etc.(4) Learn the latest experience of research at home and abroad for reference. Redesign ONU which was not flexible. Design the adaptive sleep mode by improving the MPCP protocol. Have simulation on OPNET platform. The energy efficiency increases by57%at average using the adaptive sleep mode and it’s more flexible.