doc.: IEEE 802.15-<doc#>

Submission

doc. : IEEE 802.15-15-09-0205-00-0007March 2009

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Submission Title: VLC – Application Category Terms & MobilityDate Submitted: March 2009Source: 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

doc.: IEEE 802.15-<doc#>

Submission

doc. : IEEE 802.15-15-09-0205-00-0007March 2009

Terminology

• Infrastructure• Fixed• Mobile• Vehicle

I1 I2 I3 I4Infrastructure

Vehicle Vehicle

Addr #V2

Addr #V1

Addr #I1

Addr #M1

Infrastructure

Mobile

Fixed

Addr #F1

Addr #I2

Addr #I3

Addr #I4

Larry Taylor, DTC (UK)

doc.: IEEE 802.15-<doc#>

Submission

doc. : IEEE 802.15-15-09-0205-00-0007March 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)

doc.: IEEE 802.15-<doc#>

Submission

doc. : IEEE 802.15-15-09-0205-00-0007March 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)

I1

M1 M1

Physical Mobility

Larry Taylor, DTC (UK)

doc.: IEEE 802.15-<doc#>

Submission

doc. : IEEE 802.15-15-09-0205-00-0007March 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

I1 I2 I3 I4

M1

Logical Mobility

Larry Taylor, DTC (UK)

doc.: IEEE 802.15-<doc#>

Submission

doc. : IEEE 802.15-15-09-0205-00-0007March 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)

I1 I2 I3 I4

M1 M1

Physical MobilityLogical Mobility

Larry Taylor, DTC (UK)

doc.: IEEE 802.15-<doc#>

Submission

doc. : IEEE 802.15-15-09-0205-00-0007March 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)

V1 V2

Point-to-Point

I1 I2 I3 I4

V1 V1

Physical MobilityLogical Mobility

Larry Taylor, DTC (UK)