Wireless Software Defined Networks: Challenges and Opportunities From the 2013 IEEE International Conference on Microwaves, Communications, Antennas and Electronic System(COMCAS 2013) Author(s): Claude Chaudet; Yoram Haddad Telecom ParisTech, Institut Telecom; Jerusalem College of Technology Paris, France; Jerusalem, Israel 1
13
Embed
Wireless Software Defined Networks: Challenges and Opportunities From the 2013 IEEE International Conference on Microwaves, Communications, Antennas and.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
1
Wireless Software Defined Networks: Challenges and Opportunities
From the 2013 IEEE International Conference on Microwaves, Communications, Antennas and Electronic System(COMCAS
2013)Author(s): Claude Chaudet; Yoram Haddad Telecom ParisTech, Institut Telecom; Jerusalem College of Technology Paris, France; Jerusalem, Israel
2
Outline• Introduction• Software Defined Network(SDN) and Openflow• Wireless SDN Challenges
– Slicing and Channels Isolation– Monitoring and Status Report– Handoffs
• Wireless SDN Opportunities– Improving end-user connectivity and QoS– Multi-network planning– Security– Localization
• Conclusion• Reference
3
Introduction
• Wired networks – cables, complexity• Wireless networks – data rate, services• Software Defined Radio(SDR)• Spectral efficiency – two strategies• Close access points limits optimization
possibilities• Software Defined Network(SDN)
4
SDN
• Control plane and forwarding plane– Centralized management
• Controller– NOX, POX– Span across multiple LANs.
5
• FlowVisor – slicing
• Wireless SDN– Time required
6
Wireless SDN Challenges
• Slicing and Channels Isolation– Wireless FlowVisor management– Defining more slices than the number of channels
defined by the technology is possible.• Time division multiplexing• Frequency division multiplexing
7
• Monitoring and Status Report– Report the status– Two non-trivial aspects• Estimating the different wireless channels status• Topology discovery
– Control And Provisioning of Wireless Access Points(CAPWAP)
– The channels load is quite difficult to estimate– Identifying the local topology surrounding a node
• P. Dely, A. Kassler, and N. Bayer. Openflow for wireless mesh networks. In 20th International Conference on Computer Communications and Networks (ICCCN), Aug. 2011.