1. UWB Teleconference Report
May 2002
doc.: IEEE /336r0
UWB Teleconference Report
Submission
Slide 1
Richard Paine, Boeing

2. Agenda Invitation Teleconference Discussions
Implications of FCC Ruling on Part 15
UWB as an PHY
Alternatives for 100Mbps PHY
Next Steps

3. Invitation
At the St Louis meeting, I made a presentation at the Wireless Next Generation (WNG) about the FCC allocation of the GHz UWB band. The use of this band for UWB communications indoors is now available. The IEEE group is looking at UWB as a PHY for their short range 10m PHY at approximately 100Mbps to deliver video and other high bandwidth applications. I offered to hold a teleconference before the Sydney meeting to gather information about the feasibility of the use of UWB as an PHY. The question is; could UWB ever be used as an IEEE PHY and what would be required to make UWB feasible for ranges in the order of 30m to 100m for use as an IEEE PHY?

4. Events Since Dallas UWB approved for indoor communications 3.1-10.6GHz
If GHz is successful in six months FCC to consider expanding band size.
study group on UWB moving ahead with PAR
UWB Technologies moving ahead
Investigation on UWB as LAN technologies needed now

5. (Morse Code Symbology)
Basic Concept (Time Domain)
Gaussian Monocycle
Continuous Sine Waves
Coded Cyclets
(Morse Code Symbology)

6. UWB Emission Limit for Indoor Systems
3.1
10.6
1.99
GPS Band

7. UWB Emission Limit for Outdoor Hand-held Systems
3.1
10.6
1.99
GPS Band

8. Events Since Teleconference
FCC has changed the rules on Part 15 (
FHSS systems in the 2.4 GHz spectrum will get a boost in the Part 15 revamp, lowering the minimum number of hops to 15, provided the system uses no more than 125 milliwatts (mW) of power.
DSSS systems also get a break in the new rules, with the elimination of the processing gain requirement of 10db. Adopted 11 years ago to prevent equipment makers from making systems that used more bandwidth power than needed, the industry has matured to a point where the requirement might not be necessary any more, the FCC concludes.

9. FCC Part 15 Rules (cont)
FCC has changed the rules on Part 15 (
The Part 15 amendment opens the 2.4 GHz spectrum to other technologies, which technically aren't spread spectrum technologies but have the same characteristics.
The Part 15 amendment also opens the UNII spectrum to other technologies.

10. Conclusions About FCC Rulings
On UWB rulings:
Still not enough to do WLAN
Rulings by FCC could change that in 1-3 years
On Part 15 rulings:
Opens up the possibilities of doing Pulse in ISM
and UNII above the noise floor

11. Consumer Expectations
802.3:
10Mbps
100Mbps
1Gbps
10Gbps
802.11:
1Mbps and 2Mbps
11Mbps
54Mbps
100Mbps?
300Mbps?

12. 802.11 PHY Frequency Possibilities
ISM - 902MHz, 2.4GHz, 5.75GHz
UNII GHz
UWB GHz
29 or 60GHz Phased Arrays?
Any others?

13. UWB Teleconference Conclusions
UWB not ready for WLAN, but don’t write it off
FCC may flex the UWB rules

14. Transmission Possibilities
OFDM? Not Likely considering a performance
UWB Pulse Below Noise Floor in UWB frequencies
Pulse Above Noise Floor in ISM or UNII frequencies

15. New 5 Year Wireless Technologies
Pulse Radios
UWB
Adaptive Wireless Networks
Collaboration over Wireless
VOIP over Wireless
Mobile Ad-Hoc Networks (MANET)
Seamless Mobility
Software Radios

16. Boeing Wireless Railroad Chart
1-3 GHz x >100Mbps UWB
5.15 GHz x 100 Mbps DFS & TPC (adaptive)
5.15 GHz x 54Mbps a
2.4 GHz X 24Mbps Adaptive g
2.4 GHz x 11 mb (802.11b) Lucent/Cisco 50,000 potential Boeing users (laptops+PDAs), 1,000 APs deployed
UWB 5GHz Bluetooth
2.4 GHz x 11Mbps Adaptive Bluetooth
2.4 GHz x 700Kbps Bluetooth
2000
2001
2002
2003
2004
2005
2006
2007

17. Proposal for WNG Recommendation to Stuart
Proposal: Study Group on Next Generation IEEE PHY
Motion: Move that the WNG form a study group for investigating 100Mbps WLAN technologies