| The global information triggered profound changes to the modern world in the 21 century, which reshaped the new patterns of the world political, economic, social, cultural and military, therefore, to speed up the development of information technology has become to the common choice of countries in the world. However, with the explosive growth of global information, people have to concern the excessive consumption of power in information industry. The fiber-based optical network is the only technology currently to realize the high-speed and large-capacity transmission, which is also an important load platform to build the information society, besides, the optical equipments used to optical transmission and exchange can undoubtedly greatly reduce the energy consumption of the network. Therefore, the study of energy-saving technology in the large-scale multi-domain optical networks and the methods to improve network efficiency and resource utilization will be hot topics of the research of next-generation optical network technologies, and this paper will also focus on this research area.In this paper, the architecture of a multi-domain ASON with low energy consumption and high efficiency is proposed and the key technologies to realize it are deeply researched. With the support of the national 863 project "Optical Network Fast connection and resource optimistic Distributed coordination of management and control", the main works completed in this paper are as follows:1. General introduction of the research background and meanings of the energy consumption in the communication network is given in the paper, and numerous research and summary of the research status, technology and standardization of this issue are also provided. Multi-domain intelligent optical network architecture with low-power and high-efficiency is proposed according to the development requirements of next-generation optical networks and the characteristics of intelligent optical network, which is the key issue of this paper.2. Briefly introduced the key technologies of routing and signaling in the multi-domain optical network. Described the addition of multi-domain ASON architecture with low-power and high-efficiency to the basic ASON architecture in the management plane, control plane and transmission plane respectively3. Deeply researched the key technologies to implement the multi-domain ASON architecture with low-power and high-efficiency, including the Coordination of Management and Control in optical transmission network, the node devices sleep technology, the analysis and modeling technology of the optical node devices'energy consumption and power-aware routing technology, and a node devices sleep strategy based on the Coordination of Management and Control, a power-aware OXC structure and a Power-aware Improved Ant Colony Algorithm(PA-ACA) are proposed in the paper.4. The multi-domain ASON architecture with low-power and high-efficiency test bed is realized with the support of the national 863 project, and the author of this paper is responsible for the design and development of Connect Control Module. The function, design and process of the CC module are introduced in the paper. The performance of the node devices sleep strategy and the PA-IACA are also presented in the paper, based on the test bed. |