Research Of Novel Spectrum Resource Management And Assignment Models Of Slice Network

All IP-based network development and the rapid popularity of high-bandwidth applications put forward higher requirements to the all-optical network on the information carrying capacity. How to fully utilize the bandwidth resources of optical network, and to enhance the information transmission capacity on the condition of limited resources has become the key issues of future development of all-optical network; correspondingly, to realize optical network resource utilization and application flexibility and other aspects of the overall increase has become the all-optical network development trend of the future.SLICE Network supporting flexible management of spectrum resources has the practical significance of great research due to the following characteristics:(1) Based on the actual traffic volume, allocate optical layer resource dynamically, configure the connection of the optical path and realize all-optical switching,, break the limit of channel’s bandwidth in WDM networks and solve the transmission problems of high-rate optical signal.(2) Optical spectrum resource management and control technology supporting for fine particle improves all-optical network resource utilization efficiency, reduces the energy consumption of network nodes, achieves the optical layer resource virtualization and allocate on-demand according to business needs and then enables all-optical network resource optimization and dynamic flexible scheduling.According to spectrum resource management and allocation techniques of spectrum agile optical networks, this paper proposed two new spectrum resource management and allocation model different from traditional techniques in the two aspects, and the following two points are the main contents, innovative technology points and conclusions of this paper:(1) According to processing a service request in the network, the coarse allocation for both of the two directions’ different demands of the service, and the symmetric treatment for both sides of the link when managing and controlling spectrum resources result a large spectrum resources waste in the direction of lower bandwidth requirements, and this paper proposed Asymmetric Spectrum Assignment Model, which can manage network spectrum resource more granularly, allocate on-demand according to the bandwidth requirements on two sides of the service between the source node and the destination node and ensure the efficient use of spectrum resources.(2) According to the node’s asymmetric position in the routing process due to the asymmetry of the network topology and the node’s position in the network which resulting that the nodes with same priority have different node performance and the network unbalances, and based on the centralized control thought SDN architecture and feedback mechanisms and online computing applications, this paper proposed Blocking Probability Balancing Model which offers more routing and spectrum assigning chances for the nodes that is more possible to block service to help make these nodes less possible to block and make a more balanced network.