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8/2/2019 Cluster Ucanregulation

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UCAN Cluster Contribution

UWB Co-Existence


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Introduction

n UCAN work in Regulation Issues.

Task 31. Radio Channel and Co-existence

n Co-existence and interference model are being

studiedn Interference Trials from UWB to other services

(GSM, UMTS, GPS, FWA)

n D32 Co-existence to other systems (M24-Dec 03)

Cooperation with European regulatory bodies(CEPT and ETSI)


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Interference Model

n Interference considerations

Geometrical configuration.

New considerations in an interference

model : traffic issues.Propagation law .

n Interference PDF modeling (statistical).

n

Simulations and results


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First Approachn

Interference model based on uniform discrete distribution of UWBtransmitters, over a victim receiver

+ + + + +

+ + + + +

+ + + +

+ + + + +

+ + + + +dx

dy

Mesh of UWB

Transmitters

Cellular base stationReceiver CDMA system, F=1800MHz, n=2, do=100, BRX=5MHz, ?(NTX/m2)

Interference

Continuous

Discrete


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n New geometrical configuration.

n New considerations in an interference model : traffic issues.

Probability to have k users of each ring on at a time t corresponds

to a binomial distributed variable:

Distance to the first ring: RL= R0/ 2

Density of transmitters: =1/ R0

Distance to the ith ring: di=(2i-1)RL

Number of users in ith ring: Nn=4(2i-1)

( )[ ] ( ) ( )a1nd1ndan

?1nNP?1nPn??nNP +++=+ + =

=N

k

k 1P1

( ) kNkN

kk

p1pP

=

da

a

??

?p

+=

0 1 2 n N

a (-1)a

d 2d 3d nd (n+1)d d

3

4d

.... ....(2)a (-(n-1))a (-n)a a

d1

d2

d3

R0

d1

d2

+ +

+ +

RL

Ro

dr


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n Propagation law .

Path loss

n Interference PDF modeling (statistical). - Model

d0 : point located in the far field on the antenna.

- Large cells d0 = 1 Km

- Micro cells d0 = 100 m

- Indoors d0 = 1 m

=

0i

2

i

0i

n

0

i

2

0

i

dif d?

d4p

dif dd

d

?

d4p

L

A1: Power received from UWB device located at ring 1

A2: Power received from UWB device located at ring 2

( ) ( ) = =

+=1 2N

0i

N

0j

221jiI ,sjAiAGPPIf

Pi: Probability to have i instantaneous users in the first ring

Pj: Probability to have j instantaneous users in the second ring

2: standard deviation of the gaussian approximation (3rd up to )


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n Simulations and results

Example: Rx with BWRX = 5 MHz ; f = 2000 MHz ; d0 = 1 m ; n=4

Traffic offered by each

transmitter

Maximum density of transmitters

(tx/Km2)Protection distance (m)

a=0.01 Erlangs 303140 1.28 m

a=0.025 Erlangs 301250 1.28 m

a=0.05 Erlangs 214440 1.52 m

a=0.10 Erlangs 215319 1.53 m

a=0.20 Erlangs 174466 1.69 m

a=0.30 Erlangs 173620 1.69 m

a=0.40 Erlangs 172890 1.70 m

a=0.50 Erlangs 151020 1.81 m

a=0.70 Erlangs 150316 1.82 m

a=0.99 Erlangs 149830 1.82 m


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UCAN Future Work

n Continue with co-existence theoreticalmodel approach. Application to GSM,UMTS, FWA..

n Interference Experiments. Trials with UWBtransmitters and GSM, UMTS, FWA..emulator victim receivers.

n Presentation of these results to CEPT,

ETSI, IEEE and ITU.


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Comments on ETSI UWB Draft

ETSI Indoor Limit

FCC Indoor Limit

Part 15 Limit

87

Log

Below 900 MHz ???

Is this limit adequate??


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Next Steps .

n UWB Global Regulatory Status EU

n CEPT SE24 Spectrum/regulatory issues Spectrum sharing study for < 6 GHz

n ETSI TG31a Standards development Conformance testing

ITU recommendationsn ITU-R Study Group 1

Japann MPT will start regulatory process with industry

Experimental licenses

n MMAC starting

US

n FCC to review approx. one year afterwards May ease restriction if real use is less interfering

Real products needed to judge real interference Products not likely to come until end 03 (earliest)


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Europe Regulation

ETSI

Technical Rules& Standards

CEPTRegulation

& Co-existence

UWB Development

n CEPT SE24 finalizing a report on UWB spectrum sharing

n Technical input from

Participating PTTs

ITU-R sources

ETSI ERM TG31a provides

n Individual European regulators will base their regulations on the SE24 report

n ETSI TG31an Started on conformance tests

n Recommended emission mask that aligns well with the FCC mask


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CEPT

n Short Range Devices (SRD) and Recommendation 70-03Work on this item continues as an ongoing task in theSRD MG.

The use of Ultra Wide Band (UWB) technology is now being

addressed in a greater detail. Compatibility studies and test aretaking place. Consideration will have to be given to the structureof the future regulations for UWB applications in Europe andworld wide. It is also important to consider possible changes to the

Radio Regulations including 5.340.

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