March 2003 doc.: IEEE 802.15-03/151r1

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

Submission Title: [TG3a-Wisair-CFP-Presentation]

Date Submitted: [3 March, 2003]

Source: [Gadi Shor] Company: [Wisair]

Address: [24 Raoul Wallenberg st. Ramat Hachayal, Tel-Aviv, ISRAEL]

Voice: [+972-3-7676605] FAX: [+972-3-6477608], E-Mail: [[email protected]]

Re: [802.15.3a Call for proposal]

Abstract: [Wisair’s presentation for the P802.15.3a PHY standard]

Purpose: [Response to WPAN-802.15.3a Call for Proposals]

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.

Submission Slide 1 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Wisair’s Variable-Pulse-Rate Multi-Band

PHY layer Proposal for TG3a

Submission

Gadi Shor, Yaron Knobel, David Yaish,

Sorin Goldenberg, Amir Krause, Erez Wineberger, Rafi Zack,

Benny Blumer, Zeev Rubin, David Meshulam, Amir Freund

Wisair

Slide 2 Gadi Shor, Wisair

March 2003

Contents

• Targets

• Main Features

• Physical layer

• Implementation and Feasibility

• MAC enhancements

• Performance

• Self Evaluation

• Conclusions

Submission Slide 3

doc.: IEEE 802.15-03/151r1

Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Targets

• Proposal for high bit-rate

Multi-Band

PHY layer for 802.15.3 MAC

• Support applications with wireless transmission of Audio/Video and High-

Rate data communication

• Allow cost effective , low power implementation on chip

Submission Slide 4 Gadi Shor, Wisair

March 2003

Contents

• Targets

• Main Features

• Physical layer

• Implementation and Feasibility

• MAC enhancements

• Performance

• Self Evaluation

• Conclusions

Submission Slide 5

doc.: IEEE 802.15-03/151r1

Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Main Features

• Variable-Pulse-Rate Multi-band PHY

• Flexible

(use 1->14 sub-bands out of 30)

 World-wide regulation

 Co-existence with current and future systems

 Interference mitigation

• Scalable

(Variable pulse repetition frequency)

 20 to 1000 Mbps

 Reduced ADC sampling rate at lower Bit-rate

 Power consumption vs. Bit-rate trade off

• Support 802.15.3 MAC without modifications

, only enhancements

• Support all selection criteria

Submission Slide 6 Gadi Shor, Wisair

March 2003

Contents

• Targets

• Main Features

• Physical layer

• Implementation and Feasibility

• MAC enhancements

• Performance

• Self Evaluation

• Conclusions

Submission Slide 7

doc.: IEEE 802.15-03/151r1

Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Variable-Pulse-Rate Multi-Band PHY layer

• Sub-bands frequency plan

• Pulse shape

• Operation modes

• Variable-Pulse-Rate time-frequency interleaving sequences

Submission Slide 8 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Frequency Plan Consideration Points

Consideration points :

• FCC mask

 In band mask – 3.1-10.6 GHz

 Indoor FCC mask require 10db attenuation at 3.1GHz rejection

 Outdoor FCC mask require 20db attenuation at 3.1GHz rejection

• 802.11a Frequency range :

 US & Canada: 5.15 - 5.350GHz & 5.725 - 5.825GHz

 Japan: 4.9-5GHz ,5.15 - 5.25GHz

 Europe: 5.15 - 5.35GHz & 5.47 - 5.725GHz

Submission Slide 9 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Multi-Band Frequency-Plan

• Sub-bands are spaced 470 MHz apart



For flexible co-existence and simple implementation

• Each sub band is generated by a pulse with 10 dB bandwidth of

~520 MHz



Supports FCC requirements

Submission Slide 10 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Two overlapping frequency groups (A, B)

•A Second group overlap the first group 235 MHz aside

 enhance system flexibility with respect to co-existence, interference mitigation and multiple access

Submission Slide 11 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Upper and Lower Sub-Band Sets

• Each group is divided into lower (sub-bands

1-8) and upper (sub-bands 9-15) sets

• Only 7 sub-bands are used in the lower set

 One sub-band can be avoided for co-existence

• The upper set is used in parallel to the lower set to increase the bit-rate

 First generation support lower set

 Next generation devices has backward compatibility

Submission Slide 12 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Signal spectrum: Group A - Lower Set

(ADS Simulation)

-80

-100

-120

-140

-160

-180

2 3 4 5 6 freq, GHz

7 8 9

• The sub-bands are divided into a lower set (lower

8 sub-bands) and an upper set (higher 7 subbands)

Submission Slide 13 Gadi Shor, Wisair

F #

F1a

F2a

F3a

F4a

F5a

F6a

F7a

F8a

F9a

F10a

F11a

F12a

F13a

F14a

F15a

March 2003 doc.: IEEE 802.15-03/151r1

Co-existence

FC[GHz] FL[GHz] FH[GHz] F # FC[GHz] FL[GHz] FH[GHz]

3.76

4.23

4.7

5.17

5.64

6.11

6.58

7.05

7.52

7.99

8.46

8.93

9.4

9.87

10.34

3.5

3.97

4.44

4.91

5.38

5.85

6.32

6.79

7.26

7.73

8.2

4.02

4.49

4.96

5.43

8.67

9.14

9.19

9.66

9.61

10.13

10.08

10.6

5.9

6.37

6.84

7.31

7.78

8.25

8.72

F1b

F2b

F3b

F4b

F5b

F6b

F7b

F8b

F9b

F10b

F11b

F12b

F13b

F14b

F15b

3.525

3.995

4.465

4.935

5.405

5.875

6.345

6.815

7.285

7.755

8.225

8.695

9.165

9.635

10.105

3.265

3.735

4.205

4.675

5.145

5.615

6.085

6.555

7.025

7.495

7.965

3.785

4.255

4.725

5.195

8.435

8.905

8.955

9.425

9.375

9.895

9.845

10.365

5.665

6.135

6.605

7.075

7.545

8.015

8.485



Center frequencies selected to allow elimination of one sub-band per region



Only 7 sub-bands are used in the lower set according to the region

Submission Slide 14 Gadi Shor, Wisair

March 2003

Co-existence

doc.: IEEE 802.15-03/151r1



Only 7 sub-bands out of 8 are used in the lower set according to the region

Submission Slide 15 Gadi Shor, Wisair

March 2003

Co-existence (US)

doc.: IEEE 802.15-03/151r1

F # FC[GHz] FL[GHz] FH[GHz] F # FC[GHz] FL[GHz] FH[GHz]

F9a

F10a

F11a

F12a

F13a

F14a

F15a

F5a

F6a

F7a

F8a

F1a

F2a

F3a

F4a

Submission

7.52

7.99

8.46

8.93

9.4

9.87

10.34

3.76

4.23

4.7

5.17

5.64

6.11

6.58

7.05

7.26

7.73

8.2

8.67

9.14

9.61

10.08

3.5

3.97

4.44

4.91

5.38

5.85

6.32

6.79

7.78

8.25

8.72

9.19

9.66

10.13

10.6

4.02

4.49

4.96

5.43

5.15

5.9

5.725

6.37

6.84

7.31

F9b

F10b

F11b

F12b

F13b

F14b

F15b

F5b

F6b

F7b

F8b

F1b

F2b

F3b

F4b

7.285

7.755

8.225

8.695

9.165

9.635

10.105

3.525

3.995

4.465

4.935

5.405

5.875

6.345

6.815



US Co existence with 802.11a: avoid one of the Sub Channels: 4a,5a,5b,6b

Slide 16

3.265

3.735

4.205

4.675

5.145

5.615

6.085

6.555

7.025

7.495

7.965

8.435

7.545

8.015

8.485

8.955

8.905

9.375

9.425

9.895

9.845

10.365

3.785

4.255

4.725

5.195

5.665

5.35

6.135

5.825

6.605

7.075

Gadi Shor, Wisair

March 2003

Co-existence (US)

doc.: IEEE 802.15-03/151r1

Submission



Example: Avoid sub band 6b

Slide 17 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Co-existence (Europe)

F #

F1a

F2a

F3a

F4a

F5a

F6a

F7a

F8a

F9a

F10a

F11a

F12a

F13a

F14a

F15a

FC[GHz] FL[GHz] FH[GHz]

3.76

4.23

4.7

5.17

5.64

6.11

6.58

7.05

7.52

7.99

8.46

3.5

3.97

4.44

4.91

5.38

5.85

6.32

6.79

7.26

7.73

8.2

4.02

4.49

4.96

5.43 5.15

5.9 5.725

6.37

6.84

7.31

7.78

8.25

8.72

8.93

9.4

8.67

9.14

9.19

9.66

9.87

9.61

10.13

10.34

10.08

10.6

F #

F1b

F2b

F3b

F4b

F5b

F6b

F7b

F8b

F9b

F10b

F11b

F12b

F13b

F14b

F15b

FC[GHz] FL[GHz] FH[GHz]

3.525

3.265

3.785

3.995

3.735

4.255

4.465

4.205

4.725

4.935

4.675

5.195

5.405

5.145

5.665 5.35,5.47

5.875

5.615

6.135 5.825

6.345

6.085

6.605

6.815

6.555

7.075

7.285

7.025

7.545

7.755

7.495

8.015

8.225

7.965

8.485

8.695

8.435

8.955

9.165

8.905

9.425

9.635

9.375

9.895

10.105

9.845

10.365

Submission



Europe Co existence with 802.11a: avoid one of the Sub Channels: 4a,5a,5b,6b

Slide 18 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Co-existence (Europe)

Submission



Example: Avoid sub band 5a

Slide 19 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Co-existence (Japan)

F #

F8a

F9a

F10a

F11a

F12a

F13a

F14a

F15a

F1a

F2a

F3a

F4a

F5a

F6a

F7a

FC[GHz] FL[GHz] FH[GHz]

7.05

7.52

7.99

8.46

8.93

9.4

9.87

10.34

3.76

4.23

4.7

5.17

5.64

6.11

6.58

6.79

7.26

7.73

8.2

8.67

9.14

9.61

10.08

3.5

3.97

4.44

4.91

5.38

5.85

6.32

7.31

7.78

8.25

8.72

9.19

9.66

10.13

10.6

4.02

4.49

4.96

5.43 5.15-5.25

5.9

6.37

6.84

Submission



Japan Co existence with 802.11a: avoid one of the Sub Channels: 4a,4b

Slide 20

F #

F8b

F9b

F10b

F11b

F12b

F13b

F14b

F15b

F1b

F2b

F3b

F4b

F5b

F6b

F7b

FC[GHz] FL[GHz] FH[GHz]

6.815

7.285

7.755

8.225

8.695

9.165

9.635

10.105

3.525

3.995

4.465

4.935

5.405

5.875

6.345

3.265

3.735

4.205

4.675

5.145

5.615

6.085

6.555

7.025

7.495

7.965

7.075

7.545

8.015

8.485

8.435

8.905

8.955

9.425

9.375

9.895

9.845

10.365

3.785

4.255

4.725

5.195

4.9-5

5.665

6.135

6.605

Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Co-existence (Japan)

Submission



Example: Avoid sub band 4a

Slide 21 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Variable-Pulse-Rate Multi-Band

Modulation and Coding Scheme

• The waveform is generated by time interleaving of pulses from different frequency sub-bands

• Modulation schemes: QPSK and BPSK

• Coding Schemes: Viterbi K=7, Rate ½, ¾

• Three pulse repetition intervals supported to allow

 Reduced ADC sampling rate for improved power consumption

 Improved multiple access

 Improved ISI mitigation

 Energy collection

Submission Slide 22 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Variable-Pulse-Rate Multi-Band

•Pulse repetition interval per sub-band is longer than channel response

28 nSec: 7 pulses ~3.9 nSec each with 250 Mpps

56 nSec: 7 pulses ~3.9 nSec each with 125 Mpps

84 nSec: 7 pulses ~3.9 nSec each with 83.3 Mpps

 Reduce sampling rate for reduced bit rates

Submission Slide 23 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mpps signal example

(ADS simulation)

400

200

0

-200

-400

0 10 20 30 40 50 time, nsec

•

Any number of sub-bands (N<=7) can be used

Unused sub-bands are not transmitted

• Example shows 4 sub-bands in use

60

Submission Slide 24 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Multi-band signal generation

Data F1A

Da I

Lower Bands Set

Data

Stream

Scrambling+

Coding +

Interleaving

Stream

DeMultiplexer

+

Inner Coding

Data F2A

Physical

Sub-Bands

Multiplexer

PFIa(t)

Da Q

Sub Band select

Db I

PFQa(t)

Optional Upper Bands

PFIb(t)

Data FnA

Db Q

Sub Band select

PFQb(t)

•Above 500 Mbps the upper band optional section (Gray section) may be used to allow up to 1000 Mbps

Submission Slide 25 Gadi Shor, Wisair

March 2003

Pulse Shape

RF QPSK signal shape, Pulse-rate=250 Mbps

1

0.5

0

-0.5

doc.: IEEE 802.15-03/151r1

Pulse shape defines the envelope of the pulse

-1

0 4 8 12 16 t [nSec]

20 24 28

 









f env









env



1

f T

2

guard



RF QPSK signal shape, Pulse-rate=250 Mbps

1

0.5

,



1

t T t

2

guard

,

f env



1

2

1

f env



125 MHz,

T guard



T guard



0.1 nSec

0

The Envelope spectrum

-0.5

-1

1 2 t [nSec]

3.9 nSec

4.0 nSec

3 4

0

-5

-10

-15

-20

-25

-30

-35

-40

0 0.2

0.4

0.6

Frequency [GHz]

0.8

1

Submission Slide 26 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Operation Modes (7 bands example)

Mode

6

7

4

5

8

1

2

3

Modulation Coding

QPSK

QPSK

QPSK

QPSK

QPSK

QPSK

BPSK

BPSK

Rate

1

¾

½

250

250

250

¾

½

125

125

½ 83.33

¾

Repetition code x bands

83.33

125

Pulse Rate

[Mpulse/sec]

56

56

84

84

56

Sub-

Band

PRI

[nsec]

28

28

28

Data Rate

[Mbs] -7 bands example

500

375

250

187.5

125

83.3

62.5

17.86

Submission Slide 27 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Bit rates vs. Number of sub-bands

Sub bands/

Mode

1

4

5

2

3

6

7

8

14

1000

750

500

375

250

166.6

125

17.86

7

500

375

250

187.5

125

83.3

62.5

17.86

6

428.57

321.43

214.29

160.71

107.14

71.40

53.57

17.86

5

357.14

267.86

178.57

133.93

89.29

59.50

44.64

17.86

4

285.71

214.29

142.86

107.14

71.43

47.60

35.71

17.86

3

214.29

160.71

107.14

80.36

53.57

35.70

26.79

17.86

2

142.86

107.14

71.43

53.57

35.71

23.80

17.86

17.86

1

71.43

53.57

35.71

26.79

17.86

11.90

8.93

17.86

• In each operation mode different number of sub-bands can be used

• The table shows Bit-Rates for different number of sub-bands under different operation modes

• Mode 5 with 7 sub-bands supports 125Mbps (Meets IEEE 110Mpbs requirement)

• Mode 3 with 7 sub-bands supports 250Mbps (Meets IEEE 200Mpbs requirement)

• Mode 1 with 7 sub-bands supports 500Mbps for scalability

• Mode 8 is used for the beacon, same information is transmitted over all sub-bands

Submission Slide 28 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Time-Frequency interleaving sequences

• Each piconet uses a different time-frequency interleaving sequence of length 7

• The “same” sequence is used for the upper frequency set (in parallel to the lower set )

• The set is used according to the sequence, the mode of operation and the number of sub-bands to be used

Submission

S1

S2

S3

S4

S5

S6

1 2 3 4 5 6 7

1 3 5 7 2 4 6

1 4 7 3 6 2 5

1 5 2 6 3 7 4

1 6 4 2 7 5 3

1 7 6 5 4 3 2

Slide 29 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Collision Example: S1 and S2

S1

S2, Phase A

S2, Phase B

S2, Phase C

S2, Phase D

1

1

2

3

3

5

4

7

5

2

6

4

7

6

1

1

2

3

3

5

4

7

5

2

6

4

7

6

6

1 3 5 7 2 4 6

1 3 5 7 2 4

4 6

1 3 5 7 2 4 6

1 3 5 7 2

2 4 6

1 3 5 7 2 4 6

1 3 5 7

S2, Phase E

S2, Phase F

5

1

7

3

2

5

6

4

1

6

3

1

5

3

7

5

2

7

4

2

6

4

1

6

3

1

5

3

S2, Phase G

6 1 3 2 4 6

1 3 5 7 2 4 6

1



Only one collision for every possible time offset

Submission Slide 30 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Variable-rate Time-Frequency interleaving sequences

• Example for 7 sub-bands using S2 in the different operation modes: 250, 125 and 83.3

Mpps

250

Mpps

1 3 5 7 2 4 6 1 3 5 7 2 4 6 1 3 5 7 2 4 6 1 3 5 7 2 4 6 1 3 5 7 2 4 6 1 3 5 7 2 4 6

125

Mpps

1 5 2 6 3 7 4 1 5 2 6 3 7 4 1 5 2 6 3 7 4

83.3

Mpps

1 7 6 5 4 3 2 1 7 6 5 4 3 2

•Preserve time-frequency sequences collision properties for all modes

•Reduce multi-path effect on collision between Piconets

•Improve multi-path mitigation and enable energy collection

Submission Slide 31 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Variable Rate Time Frequency interleaving sequences

• Example for 4 sub-bands using S2 in the different operation modes: 250, 125 and 83.3

Mpps

250

Mpps

1 3 2 4 1 3 2 4 1 3 2 4 1 3 2 4 1 3 2 4 1 3 2 4

125

Mpps

1 2 3 4 1 2 3 4 1 2 3 4

83.3

Mpps

1 4 3 2 1 4 3 2

•For lower number of sub-bands only relevant sub-bands are used

•Preserve the collision properties for any number of sub-bands

Submission Slide 32 Gadi Shor, Wisair

March 2003

Multiple-Access

doc.: IEEE 802.15-03/151r1

• Use of different time-frequency interleaving sequences in different Piconets to reduce collisions

• Reduce number of channels in use, to reduce collisions (FDM alternative when link budget good enough)

• Reduce pulse repetition frequency to reduce multi-path effects on Multiple access

Submission Slide 33 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Preamble

• Use CAZAC sequences over all subbands in use (Similar to mode 8)

• Approximately 10 Micro Seconds

• Achieve False-Alarm and Miss-Detect requirements under multi-path and multiple access interference

• Use color code to improve Piconet identification

Submission Slide 34 Gadi Shor, Wisair

March 2003

Contents

• Targets

• Main Features

• Physical layer

• Implementation and Feasibility

• MAC enhancements

• Performance

• Self Evaluation

• Conclusions

Submission Slide 35

doc.: IEEE 802.15-03/151r1

Gadi Shor, Wisair

Antenna

March 2003 doc.: IEEE 802.15-03/151r1

Block Diagram – Analog Section

UWB

Filter

T/R

Down

Conversion +

Baseband

Including

Rake

I

Q

Analog To

Digital

Submission

Driver

Wave

Generator

Slide 36

Timing

Timing Control

TX Data

Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Block Diagram – Digital Section

From Analog

DeModulator

Inner

Decoder +

DeInterleaver

+ Viterbi

Decoder

Descrambler

To MAC

To Analog

Timing &

Phase

Control

Coded bits are being spread over the different sub-bands

To Analog

Modulator

Submission

Viterbi

Encoder +

Interleaver +

Inner

Encoder

Slide 37

Scrambler

From MAC

Gadi Shor, Wisair

March 2003

Technical Feasibility

doc.: IEEE 802.15-03/151r1

Establish wireless link using prototype:

15Mbps @ 30 meters

30Mbps @ 25 meters

60Mbps @ 18 meters

Submission Slide 38 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Size

The size was calculated using SiGe process with f

T

=60GHz for the analog blocks and 0.13 CMOS process for the digital blocks. The size includes pads overhead.

Block

Analog Blocks

Analog to Digital

Digital Blocks + Pads

Total Die Size

Die Size [mm

2

]

3.3

0.4

3.1

6.8

Submission Slide 39 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Main Modes: Bit Rates versus Power

Consumption and Link Margin

Mode

5

Bit Rate with 7 subbands

Link Budget

Margin

RF- Tx

Power

[mW]

PHY Tx

Power

[mW]

(0.13u)

Total

PHY

Tx

Power

[mw]

125

4.84 dB @10m

65 20

RF- Rx

Power

[mW]

PHY Rx

Power

[mW]

(0.13u)

Total

PHY Rx

Power

[mW]

85 100 30 130

3 250

9.79 dB @4m

95 30 125 140 40 180

Less than 1 mWatt per 1 Mbps

Submission Slide 40 Gadi Shor, Wisair

March 2003

Contents

• Targets

• Main Features

• Physical layer

• Implementation and Feasibility

• MAC enhancements

• Performance

• Self Evaluation

• Conclusions

Submission Slide 41

doc.: IEEE 802.15-03/151r1

Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

PHY Mapping on current 802.15.3 MAC

• The proposed PHY can be used with the current

MAC without modifications

• Piconet channel is represented by a Time–Frequency interleaving seed sequence

 Each Piconet choose a different seed sequence (channel)

 Devices in the same piconet use the same seed sequence

(channel)

Channel = Sequence

• The Piconet beacon frames are transmitted over all sub-bands

 This is done transparently to the MAC (using PHY mode 8)

Submission Slide 42 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Location Awareness

• Special command frame that support Time

Advanced measurement between two

Piconet devices

• Two devices exchange two messages

 Dev A to Dev B: Send time A

 Dev B to Dev A: Time Diff A(Receive Time A -

Send Time A ) and Send Time B

 Dev A calculates

Time Diff B (Receive Time B - Send Time B )

Time between Dev A to Dev B = ½ (Diff A + Diff B)

Submission Slide 43 Gadi Shor, Wisair

March 2003

Contents

• Targets

• Main Features

• Physical layer

• Implementation and Feasibility

• MAC enhancements

• Performance

• Self Evaluation

• Conclusions

Submission Slide 44

doc.: IEEE 802.15-03/151r1

Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Link Budget (7 sub-bands)

Mode

Bit Rate

Bit Rate per Band

Average Tx power

Distance

Path loss

Rx power

Average noise power per bit

Rx Noise Figure

Link Margin

5

125

17.86

-16.42

10

66.62

-83.04

-101.48

7

4.84

3

250

35.71

-16.42

4

58.66

-75.08

-98.47

7

9.79

1

500 Mbps

71.43 Mbps

-16.42 dBm

4 Meter

58.66 dB

-75.08 dBm

-95.46 dBm

7 dB

1.78 dB

Submission

Positive link margins for main modes

Slide 45 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Performance under multi-path condition

Without Equalizer

• Bit rate: 125 Mbps (Mode 5)

• Number of bands: 7

• Simulating 400 channel realizations

• For each point either 250 packets or 21 packet errors were used

• Results represent statistics of 5 Gbits

• Note: Shadow parameter in channel model is very dominant

Submission Slide 46 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps LOS 0-4 (CM1)

(with Shadow)

Submission Slide 47 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps LOS 0-4 (CM1)

(No Shadow)

Submission Slide 48 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps LOS 0-4 (CM1) Statistics

(With Shadow)

Submission Slide 49 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM1-4 Statistics

(90% Average PER with Shadow)

Submission Slide 50 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Performance under multi-path condition

(Distance for 8% Average PER Best 90%)

90% criteria

RMS 25 7.2

NLOS 4 to 10 9.8

NLOS 0 to 4 10.7

LOS - 0 to 4

13.3

0 2 4 10 12 14 6

distance [m ]

8

Modulation scheme copes with multi-path condition without any equalization

Submission Slide 51 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Co-Existence with 802.11A and 802.11B:

Required attenuation below FCC limits

Interferer

Center frequency

15.3a Transmitted Power Per 1MHz

Reciever BW

Reciever Sensitivity

15.3a Interference permitted power

Received Power at 1 Meter

Received Power at 0.3 Meter

Required attenuation at 1 meter

Required attenuation at 0.3 meter

11b

2.4

-52

11

-76

-82

-81.63

-71.17

0.37

10.83

11a Units

5.3 Ghz

-41.3 dBm

20 MHz

-82 dBm

-88 dBm

-75.21 dBm

-64.76 dBm

12.79 dB

23.24 dB

802.11a requires attenuation above FCC limits

Submission Slide 52 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Co-Existence (ADS simulation)

SPECTRUM 30cm from UWB Antenna with with 5.17GHz Channel turned off dBm/2MHz

-60

-80

-100

-120

-140

-160

-2 0 2 8 10 12 4 6 freq, GHz

System co-exist with 802.11a and 802.11b

Submission Slide 53 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Interference

Required attenuation in Mode 5 (125Mbps with r = 0.5)

11b 11a

Center frequency

Tx power

Rx power at 1 meter

Rx power at 0.3 meter

Interference permitted power

Processing + Coding gain

2.4

20

-20.04

-9.58

-81.03

16.46

Units

5.3 Ghz

15 dBm

-31.92 dBm

-21.47 dBm

-81.03 dBm

16.46 dB

Required attenuation at 1 meter

Required attenuation at 0.3 meter

44.53

54.99

32.65 dB

43.10 dB

Required attenuation in Mode 3 (250Mbps with r = 0.5)

11b 11a

Center frequency

Tx power

2.4

Rx power at 1 meter

Rx power at 0.3 meter

Interference permitted power

Processing + Coding gain

Required attenuation at 1 meter

Required attenuation at 0.3 meter

20

-20.04

-9.58

-78.02

13.45

44.53

54.99

Units

5.3 Ghz

15 dBm

-31.92 dBm

-21.47 dBm

-78.02 dBm

13.45 dB

32.65 dB

43.10 dB

Submission Slide 54 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

802.11a Interference 100 cm

(ADS Simulation)

Wanted signal bit energy @RED

Intereferer signal bit energy @Blue

0.008

0.006

0.004

0.002

0.000

0

C/I F1A

31.129

C/I F2A

23.761

10 20 30 40 time, nsec

50 60 70

C/I [dB] @Interefer: 5.15GHz, -30dBm

C/I F3A

13.492

C/I F5A

11.335

C/I F6A

24.262

C/I F7A

36.603

C/I F8A

44.194

• Seven sub-bands with C/I better than 10 dB after eliminating one sub-band (F4A)

Submission Slide 55 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

802.11a Interference 30 cm

(ADS Simulation)

Wanted signal bit energy @RED

Intereferer signal bit energy @Blue

0.008

0.006

0.004

0.002

0.000

0

C/I F1A

21.697

C/I F2A

14.143

10 20 30 40 time, nsec

50 60 70

C/I [dB] @Interefer: 5.15GHz, -20dBm

C/I F3A

3.996

C/I F5A

1.425

C/I F6A

14.582

C/I F7A

26.718

C/I F8A

34.313

• Five sub-bands with C/I better than 10 dB after eliminating one sub-band (F4A)

Submission Slide 56 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Performance with 802.11a under AWGN

Per with 802.11a Interference, AWGN, EbN0=EbN0(sensitivity)+6dB

0

10

10

-1

-2

10

-58 -57.5

-57 -56.5

-56

SIR [dB]

-55.5

-55 -54.5

-54

• ISR=55 dB in AWGN (including F.E. rejection)

• Allows 30 cm separation

Submission Slide 57 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Performance with 802.11a under CM1

Per with 802.11a Interference, CM1 realization 49, EbN0 = EbN0 (sensitivity) + 6dB

0

10

10

-1

-2

10

-54 -53 -52

SIR [dB]

-51 -50 -49

• ISR=50 dB in CM1 (including F.E. rejection)

• Allows 50 cm separation

Submission Slide 58 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Performance Under Multiple-Access

• Desired piconet:

LOS 0-4 (CM1:49)

• Interfering piconet:

LOS 0-4 (CM1:1)

• Worst case shift between piconets

•ISR=12.3 dB for 8% per

•Allows R(Ref)/R(Int) = 4

Uncoordinated

Piconets’

Transmitters

Uncoordinated

Piconet Transmitter

Separation

Distance: d int

Receiver

Under

Test

Reference Piconet distance: d ref

Desired

Transmitter

•Example: R(Ref)=10 meters allows R(Int)=2.5 meters

•ISR can be improved by reducing number of sub-bands or increasing PRI

Submission Slide 59 Gadi Shor, Wisair

March 2003

Contents

• Targets

• Main Features

• Physical layer

• Implementation and Feasibility

• MAC enhancements

• Performance

• Self Evaluation

• Conclusions

Submission Slide 60

doc.: IEEE 802.15-03/151r1

Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Self Evaluation – General Solution Criteria

CRITERIA Evaluation

Signal Robustness

Technical Feasibility

Scalability

Location Awareness

Unit Manufacturing Cost (UMC) +

Interference And Susceptibility +

Coexistence

Manufacturability

Time To Market

Regulatory Impact +

+

0

+

+

+

Submission Slide 61 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Self Evaluation – PHY Protocol Criteria

CRITERIA

Size and Form Factor

Payload Bit Rate

Packet Overhead

PHY-SAP Throughput

Simultaneously Operation Piconets

Signal Acquisition

System Performance

Link Budget

Sensitivity

Power Management Modes

Power Consumption

Antenna Practicality

+

+

+

+

+

+

+

+

+

+

Evaluation

+

+

Submission Slide 62 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Self Evaluation – MAC Protocol

Enhancement Criteria

CRITERIA

MAC Enhancement and Modifications

Evaluation

+

Meets all selection criteria

Submission Slide 63 Gadi Shor, Wisair

March 2003

Contents

• Targets

• Main Features

• Physical layer

• Implementation and Feasibility

• MAC enhancements

• Performance

• Self Evaluation

• Conclusions

Submission Slide 64

doc.: IEEE 802.15-03/151r1

Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Conclusions

• Multi-Band scheme

30 Sub-bands allows flexible system

meets all selection criteria

• Variable-Pulse-Rate

Low power for lower bit rates

Reduces ISI problem without equalizer

Improves multiple access

• Technology demonstrated on prototype

Submission Slide 65 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

802.15.3a Early Merge Work

Wisair will be cooperating with:

• Intel

• Time Domain

• Discrete Time

• General Atomics

• Philips

• FOCUS Enhancements

• Samsung

Objectives:

• “Best” Technical Solution

• ONE Solution

• Excellent Business Terms

• Fast Time To Market

Submission Slide 66

We encourage participation by any party who can help us reach our goals.

Gadi Shor, Wisair

March 2003

Backup Slides

doc.: IEEE 802.15-03/151r1

Submission Slide 67 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Contents

• Physical layer

• Implementation and Feasibility

• MAC enhancements

• Performance

Submission Slide 68 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Contents

• Physical layer

• Implementation and Feasibility

• MAC enhancements

• Performance

Submission Slide 69 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Contents

• Physical layer

• Implementation and Feasibility

• MAC enhancements

• Performance

Submission Slide 70 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

MAC Enhancements (1)

• UWB based WPAN system should support a higher bit rate (e.g. 110Mbps, 200Mbps)

 Current MAC Throughput is degraded in high bit rate

• Support a bigger packet length

 Bigger packets may be needed for high data rate applications

• Improve the throughput

 For both small and large packet sizes

 For retransmission mode

• Support Multiband channel assignment

 Decide on usable sub bands

 Select the time frequency interleaving sequence

Submission Slide 71 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

MAC Enhancements (2)

PHY SAP Data Throughput Calculation

Frame n Transmision

MPDU_bits

(variable)

Preamble PHY Header

MAC

Header

HCS MPDU FCS MIFS

T_PA_INIT T_PHYHDR T_MACHDR T_HCS T_MPDU T_FCS T_MIFS

Payload Throughput PHY-SAP = N x Payload_bits /

[ T_PA_INITIAL+T_SIFS +

(N-1) x (T_PA_CONT+T_MIFS) +

N x (Payload_bits/R_Pay+T_MACHDR +

T_PHYHDR+T_HCS+T_FCS)]

Submission Slide 72 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

MAC Enhancements (3)

IEEE802.15.3 PHY-SAP Data Throughput

802.15.3 PHY SAP Data Throughput

60

50

40

30

20

10

0

0 1000 2000 3000

Packet Size [Octets]

4000 5000

Payload Throughput

R_PAY=55Mbps

Payload Throughput

R_PAY=44Mbps

Payload Throughput

R_PAY=33Mbps

Payload Throughput

R_PAY=22Mbps

N= 5 Frames

T_PA_INITIAL = 15uSec

T_PA_CONT = 15uSec

Submission

MACHDR=10 Octets

PHYHDR=2 Octets

Slide 73

HCS=2 Octets

FCS = 4 Octets

T_SIFS = 10uSec

T_MIFS = 2uSec

Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

MAC Enhancements (4)

IEEE802.15.3 PHY-SAP Data Throughput in High Bit Rates

802.15.3 Data Throughput for high bit rates

300

250

200

150

100

50

0

0

N= 5 Frames

T_PA_INITIAL = 15uSec

T_PA_CONT = 15uSec

Submission

1000 2000 3000 4000 5000

packet size [Octets]

MACHDR=10 Octets

PHYHDR=2 Octets

Slide 74

HCS=2 Octets

FCS = 4 Octets

Payload Throughput

R_PAY=110Mbps

Payload Throughput

R_PAY=220Mbps

Payload Throughput

R_PAY=330Mbps

T_SIFS = 10uSec

T_MIFS = 2uSec

Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

MAC Enhancements(5)

Proposed MAC Performance PHY-SAP Data Throughput in

High Bit Rates

Modified MAC Data Throughput

350

300

250

200

150

100

50

0

0 1000 2000 3000 4000 5000

Packet Size [Octets]

Payload Throughput

R_PAY=110Mbps

Payload Throughput

R_PAY=220Mbps

Payload Throughput

R_PAY=330Mbps

N= 5 Frames

T_PA_INITIAL = 15uSec

T_PA_CONT = 15uSec

Submission

MACHDR=10 Octets

PHYHDR=2 Octets

Slide 75

HCS=2 Octets

FCS = 4 Octets

T_SIFS = 10uSec

T_MIFS = 2uSec

Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

MAC Enhancements (6)

Proposed MAC Frame Structure

• Allow larger MAC frame body size (e.g. 4096

Octets

 Frame body consists of N Sub-frames

 Sub-frame consists of Data block unit and CRC

 Data block unit is limited by a maximum number of octets (e.g. 512 octets)

FCS#1

(CRC16)

Data Block #1

MAC Sub Frame

FCS#2

(CRC16)

Data Block #2

MAC Frame Body

FCS#N

(CRC16)

Data Block #N MAC Header

Submission Slide 76 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

MAC Enhancements (7)

• The proposed UWB PHY structure is based on multi-band UWB system

 MAC logical channel is mapped to several frequency bands

 Some bands might be interfered (useless) by other existing systems (I.e IEEE802.11a

– 5GHz)

 MAC should be able to drive a Bands Quality

Assessment (BQA) that determines whether a specific band is usable or not

 The Piconet Coordinator (PNC) should be able to distribute the usable bands to all its associated devices

Submission Slide 77 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

MAC Enhancements (8)

• Provide BQA time slot at the Supperframe

• Useful information is distributed as

Information Element (IE) over PNC

Beacon

• Beacon will transmitted over the whole frequency bands

Submission Slide 78 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

MAC Enhancements (9)

IE#1 IE#2 Beacon

IE#i Usable

Bands

Beacon CAP CTA#1 CTA#2 CTA#i

Bands

Quality

Assessment

CTA# i+1

CFP

MAC Super-Frame

CTA#

N

Submission Slide 79 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

Contents

• Physical layer

• Implementation and Feasibility

• MAC enhancements

• Performance

Submission Slide 80 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM1 channels

Submission Slide 81 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM1 (No Shadow)

Submission Slide 82 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM1 Statistics

Submission Slide 83 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM2 channels

Submission Slide 84 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM2 (No Shadow)

Submission Slide 85 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM2 Statistics

Submission Slide 86 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM3 channels

Submission Slide 87 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM3 (No Shadow)

Submission Slide 88 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM3 Statistics

Submission Slide 89 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM4 channels

Submission Slide 90 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM4 (No Shadow)

Submission Slide 91 Gadi Shor, Wisair

March 2003 doc.: IEEE 802.15-03/151r1

125 Mbps CM4 Statistics

Submission Slide 92 Gadi Shor, Wisair