1. Project: IEEE P802.19 Coexistence TAG
September 2003
Project: IEEE P Coexistence TAG
Submission Title: [Common Signaling for UWBCoexistence]
Date Submitted: [11 September, 2003]
Source: [John Santhoff] Company [Pulse~LINK]
Address [9155 Brown Deer Rd. Suite 8, San Diego, CA 92121]
Voice:[(858) ], FAX: [(858) ],
Re: [General contribution, tutorial to IEEE ]
Abstract: [At least one task group has chosen a UWB PHY, and a study group in P is considering UWB PHY that will operate in common spectrum. This presentation focuses on potential coexistence issues of multiple UWB PHY layers in a common frequency band.]
Purpose: [Focus and attention need to be directed to P802.15, and soon P802.11, and discussions started on issues effecting coexistence of multiple UWB PHY layers using common spectrum. It is early enough in the standards draft process to consider preemptive measures to ensure coexistence.]
Notice: This document has been prepared to assist the IEEE P 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 P
John Santhoff, Pulse~LINK

2. Coexistence of Multiple UWB Physical Layers
September 2003
Coexistence of Multiple UWB Physical Layers
Allowing Many Flavors of UWB Signaling to Coexist
John Santhoff, Pulse~LINK

3. Outline Why address UWB Coexistence? Coexistence picture today
September 2003
Outline
Why address UWB Coexistence?
Coexistence picture today
How do we address UWB Coexistence?
A Common Signaling Protocol
Why is it important to address these issues now?
John Santhoff, Pulse~LINK

4. September 2003
Why?
Lets face it:
The FCC R&O defines rules for access to 7,500 MHz of unlicensed spectrum
We will begin to see a proliferation of devices operating under these rules
Other regulatory bodies are not far behind
John Santhoff, Pulse~LINK

5. Coexistence Picture Today
September 2003
Coexistence Picture Today
Currently: only one UWB standard in draft: P a
Today concern is UWB transmitter to Narrow-Band receiver.
Coexistence, however, is: “the ability of one system to perform a task in a given shared environment where other systems that may or may not be using the same set of rules”. [IEEE definition of coexistence, Sep00/99134r2P802-15_TG2-CoexistenceInteroperabilityandOtherTerms.ppt]
In the works:
P SG4a might consider a UWB soluition
P are looking for solutions which might involve UWB
We need a pre-emptive action to ensure the orderly introduction of various UWB PHYs
John Santhoff, Pulse~LINK

6. How do we Solve the Problem?
September 2003
How do we Solve the Problem?
We need an “Etiquette” to manage peaceful coexistence of different UWB PHY layers
Today’s action set the path for UWB evolution for decades.
Lets not have market force rush us into compromises or positions we will regret later
A framework is needed that addresses guidelines on “what spectrum” is accessed “when”
A common signaling protocol can act as such an arbitrator
John Santhoff, Pulse~LINK

7. Why a Common Signaling Protocol?
September 2003
Why a Common Signaling Protocol?
We have a Once-in-a Lifetime opportunity to define an emerging wireless standard on a potentially global scale
Let’s use this opportunity to address interoperability and coexistence as a part of the standard instead of as an after thought
Example of the recent past:
the unlicensed ISM bands have experienced explosive growth with multiple PHY layer interfaces defined
In the ISM 2.4 GHz band, there are no less than five different PHY standards competing for coexistence in the same spectrum. (802.11b, , , Bluetooth and Cordless Phones)
UWB is gaining momentum:
It is likely that multiple UWB based PHY layers will emerge
Already in a; potential in SG4a; looking
John Santhoff, Pulse~LINK

8. Next Steps? Questions? Comments? Suggestions? September 2003
John Santhoff, Pulse~LINK