1. doc.: IEEE 802.15- Submission doc. : IEEE 802.15-15-09-0205-00-0007 March 2009 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: VLC – Application Category Terms & Mobility Date Submitted: March 2009 Source: Larry Taylor, DTC (UK) Re: Abstract: Purpose: Notice:This document has been prepared to assist the IEEE P802.15. 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. Release:The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. Larry Taylor, DTC (UK) March 2009

2. doc.: IEEE 802.15- Submission doc. : IEEE 802.15-15-09-0205-00-0007 March 2009 Terminology Infrastructure Fixed Mobile Vehicle Larry Taylor, DTC (UK)

3. doc.: IEEE 802.15- Submission doc. : IEEE 802.15-15-09-0205-00-0007 March 2009 Mobility There are two types of mobility –Physical Mobility –Logical Mobility Physical Mobility affects –PHY –MAC (Possibly) Logical Mobility affects –MAC Larry Taylor, DTC (UK)

4. doc.: IEEE 802.15- Submission doc. : IEEE 802.15-15-09-0205-00-0007 March 2009 Physical Mobility The VLC device changes physical position –Moves within the coverage area PHY conditions may change –Link quality –Interference –Path loss –etc. No Link Change –(I1, M1) Larry Taylor, DTC (UK)

5. doc.: IEEE 802.15- Submission doc. : IEEE 802.15-15-09-0205-00-0007 March 2009 Logical Mobility Device changes neighbourhood –Link moves from (I2, M1) –To (I3, M1) Change may be due to –PHY effects e.g. interference –MAC control e.g. Channel Change Larry Taylor, DTC (UK)

6. doc.: IEEE 802.15- Submission doc. : IEEE 802.15-15-09-0205-00-0007 March 2009 Physical & Logical Mobility Device moves while communicating –Physical position changes PHY link may change –Link changes from (I1, M1) –To (I2, M1) (I3, M1) (I4, M1) Larry Taylor, DTC (UK)

7. doc.: IEEE 802.15- Submission doc. : IEEE 802.15-15-09-0205-00-0007 March 2009 The Vehicle Cases Infrastructure & moving vehicle –Physical & Logical Mobility Link Changes –(I1, V1).. –(I4, V1) Point-to-Point –Physical Mobility No Link Change –(V1, V2) Larry Taylor, DTC (UK)