IEEE ICC 2013 Workshop on Optical-Wireless Integrated Technologies for Systems and Networks

Transcription

1 A General Model for Hybrid Fiber-Wireless (FiWi) Access Network Virtualization Qinglong Dai, Guochu Shou, Yihong Hu, Zhigang Guo Beijing Laboratory of Network System Architecture and Convergence School of Information and Communication Engineering Beijing, P.R.China Presenter: Qinglong Dai Date:June 9, 0 /8 /8

2 . n Fiber-Wireless (FiWi) network: architecture, carrying a huge number of seervices without systematical management, ossification. n Network virtualization: decoupling services from network infrastructure, Internet service provider (ISP), infrastructure provider (InP), service provider (SP), testbed, multiple virtual networks (VNs) coexistence, and so on. /8. n Main works Ø A general model for hybrid FiWi access network virtualization(components, interaction), optimal resource utilization rate, granular control. Ø Analyzing the mapping between the infrastructure resources and the virtual resources, the relationship between virtual resources and services. /8

3 /8. n FiWi access network Ø The compare of network performance. Ø Netwroking strategy to obtain higher performance. Ø The convergence of FiWi network s two subnetworks. n Network Virtualization Ø The essence of network virtualization. Ø The abstraction of wireless network. Ø The delivery process for end-to-end services in network virtualization environments. 6/8

4 7/8. n Network virtualization in FiWi access network 8/8

5 . n The model of the FiWi network virtualization 9/8 0/8

6 . n Selecting the bandwidth of connected link as the object of network virtualiztion. n The process of physical resources virtualization. BandwidthV ( i) = T( BandwidthP( i) ) n Virtual resources are allocated to form a VN. Each VN can be further allocated. n Resulting in that several VNs can be carried by a same node. /8. n Node i and its virtual links n VNs are installed on the base of physical resources M i Bandwidth ( i, k ) Bandwidth ( i) k= n For the service flow upon node i flow i V M i ( ) flow( i, k ) = k= P /8 6

7 /8. n The comparison of round-trip time (RTT) /8 7

8 . n The comparison of the FiWi network capacity /8. n The comparison of bandwidth utilization ratio in the fiber subnetwork 6/8 8

9 . Ø The proposed model decouples application from network infrastructure and allows SPs to provide users with services carried by granular VNs which are composed by the virtual resources allocated by InPs. Ø The application of network virtualization in FiWi network effectively improves the resource utilization rate and achieve the granular control of services via the VN. Ø In our future work, we will deal with the virtual resources allocation algorithm and the interaction between virtual resources and the SPs in the FiWi network environment. 7/8 8/8 9