1. IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-13-0173-00-SAUC-WMDG-UseCase Title: ONF Wireless & Mobility Use Case Proposal Date Submitted: September 17 th 2013 To be presented at IEEE 802.21.1 TG, Nanjing Wireless Interim Authors or Source(s): Charlie Perkins Abstract: This contribution proposes an project for the 802.21.1 task group to create a use case for consideration in the Wireless & Mobility Discussion Group of the ONF 1 21-13-0173-00-SAUC WMDG Use Case Proposal

2. 2 IEEE 802.21 presentation release statements This document has been prepared to assist the IEEE 802.21 Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.21. The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards Board bylaws and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/faq.pdf> Section 6 of the IEEE-SA Standards Board bylawshttp://standards.ieee.org/guides/bylaws/sect6-7.html#6http://standards.ieee.org/board/pat/faq.pdf 21-13-0173-00-SAUC WMDG Use Case Proposal

3. Outline of presentation 802.21 Media Independent Handover as North-Bound Interface ONF: Open Networking Foundation  Created to promote Software Defined Networking  Has an explicit focus on OpenFlow  Is extremely active and very well funded  Initially, equipment vendors were almost 2 nd class citizens ONF has created a new Discussion Group for Wireless & Mobility (WMDG) Based on some initial discussion within 802.21 members. I submitted to WMDG a use case intended as 802.21.1 work item 21-13-0173-00-SAUC WMDG Use Case Proposal 3

4. OpenFlow: an agent of change Originated from Stanford as a way to enable campus-scale network experimentation (funded by NSF Clean-Slate) Gained consideration as a much more general wide-area solution [OpenFlow :: traditional routing ] == [ RISC :: CISC ]  OpenFlow often used as a tool to create overlay networks  OpenFlow switches are supposed to be dumb and very cheap  90% cheaper than existing infrastructure routing fabric?  Simpler equipment  less expensive OpEx?  Protocol defines match tables for incoming packets  Each match triggers an action – e.g., select output port  Non-matching packets are sent to controller (or dropped) 21-13-0173-00-SAUC WMDG Use Case Proposal 4

5. SDN Controller SDN Controller configures switches by using OpenFlow Software on the SDN controller “creates” the network (policy, topology, …) – e.g., overlay networks SDN controller software updates “instantly” change the network  More agile than replacing router hardware  Has been proposed to de-emphasize need for standardization  Increases the need for improved configuration management  “orchestration” Signaling from the SDN controller constitutes the “control plane” 21-13-0173-00-SAUC WMDG Use Case Proposal 5

6. Wireless & Mobility Discussion Gp. ONF has chartered quite a few Working Groups  https://www.opennetworking.org/about/onf-overviewhttps://www.opennetworking.org/about/onf-overview  Architecture, Extensibility, Config, Market Education, etc. Discussion Group can become Working Group if there’s interest ONF has created (WMDG), a new Discussion Group for Wireless & Mobility WMDG is applying to the ONF Board to be chartered  In this process, collecting use cases (e.g., MIH, NFV) 21-13-0173-00-SAUC WMDG Use Case Proposal 6

7. 802.21.1 Use Case: PoS as SDN Controller 802.21 specifies Media Independent Handover mediated by a Point of Service (PoS) OpenFlow is a Media-Independent protocol for controlling switch operations  should be a natural fit for 802.21 Idea: model fabric between PoA and PoS as composed of OpenFlow switches Idea: try to use OpenFlow switches to work as PoA  Then PoS can naturally be considered an SDN controller 21-13-0173-00-SAUC WMDG Use Case Proposal 7

8. 802.21m Guidance: Learn from important use case This is a modern use case for 802.21, so will help understand proper organization for 802.21m revision Idea: investigate make-before-break and break-before-make handover behavior Also will be very helpful to generate additional interest First step: identify specific wireless access network (WiFi?) and representative topology Select a representative deployment scenario (Enterprise?) Could also engage work from other Use Cases in WMDG 21-13-0173-00-SAUC WMDG Use Case Proposal 8