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Project: IEEE P802.15 Working Group for Wireless Personal Area - - PowerPoint PPT Presentation

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November 2012 doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Project: IEEE P802.15

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum November 2012

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) 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: Presentation on Spectrum Issues at THz Frequencies to IEEE 802.18 Date Submitted: 12 November 2012 Source: Thomas Kürner (Editor) Company: TU Braunschweig, Institut für Nachrichtentechnik Address: Schleinitzstr. 22, D-38092 Braunschweig, Germany Voice: +495313912416 FAX: +495313915192, E-Mail: t.kuerner@tu-bs.de Re: doc. IEEE 802.15-320r1, IEEE 802.15-322, IEEE 802.15-416 Re: doc. IEEE 802.15 320r1, IEEE 802.15 322, IEEE 802.15 416 Abstract: The document summarizes the current status on spectrum availability for THz communications in the frequency band beyond 300 GHz. Purpose: Information to IEEE 802.18 form IEEE 802.15 IG THz p 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.

13.11.2012 Thomas Kürner, TU Braunschweig/Germany Slide 1

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum November 2012

Outline

  • Summary on possible applications for THz

communcations communcations

  • Analysis on potential interference with passive

services services

  • Dialogue with representatives from passive services
  • Current discussion relevant for THz communications
  • Current discussion relevant for THz communications

at ITU-R

  • Next steps

Next steps

13.11.2012 Thomas Kürner, TU Braunschweig/Germany Slide 2

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum

P ibl A li ti d C l it f

November 2012

Possible Applications and Complexity of the Techncial Solutions

  • xxx

Application Operational Environment Typical Range Specific Propagation Conditions Requirements for Antenna Alignment Fixed Wireless Links Links of the backbone network; static use;

  • utdoor

A few hundred meters up to several kilometers LOS; Atmospheric attenuation becomes important Highly directive antennas; alignment during the installation

  • utdoor

important during the installation process by radio engineers THz Nano Cells Part of a hierarchical cellular network; potentially mobile users; < 100m LOS/NLOS; dynamically changing conditions automatic beam steering required potentially mobile users; indoor as well as

  • utdoor

WLAN/WPAN Connection to access points; nomadic users; mainly indoor < 100m (mostly < 10m) LOS/NLOS; dynamically changing conditions automatic beam steering required mainly indoor Kiosk Downloading indoor, nomadic use A few meters (a few cm) LOS, multiple reflections from Tx and Rx automatic beam steering (manual alignment may be possible) Connecting Devices on Short Ranges indoor (typically on a desktop), nomadic use a few cm LOS, multipaths from nearby objects and ideally by automatic beam steering, but g p), y j multiple reflections from Tx and Rx g, manual alignment may be possible Board-to-Board Communication inside computers, fixed use a few cm LOS/NLOS, potentially strong multipaths fixed alignment during design process possible (automatic beam

13.11.2012 Thomas Kürner, TU Braunschweig Slide 3

steering as an option) Source: based on https://mentor.ieee.org/802.15/dcn/11/15-11-0749-00-0thz-scenarios-for-the-application-of-thz-communications.pdf

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum

Si i R di R l i f WRC 2012

November 2012

ITU Radio Regulations Footnote 5 565:

Situation Radio Regulations after WRC 2012

ITU Radio Regulations Footnote 5.565: The frequency band 275-1000 GHz may be used by administrations for experimentation with, and development of, various active and passive services. services.

  • Radio astronomy service: 275-323 GHz, 327-371 GHz, 388-424

GHz, [...]

  • Earth exploration-satellite service and space research service 275-

Earth exploration satellite service and space research service 275 277 GHz, 294-306 GHz, 316-334 GHz, [...] Administrations are urged to take all practicable steps to protect these i i f h f l i t f passive services from harmful interference.

 Two options for THz communications: 1 Transmission in remaining free parts of the THz

  • 1. Transmission in remaining free parts of the THz

spectrum

  • 2. Coexistent spectrum usage with radio

astronomy/earth exploration

13.11.2012

astronomy/earth exploration

Thomas Kürner, TU Braunschweig Slide 4 Source: https://mentor.ieee.org/802.15/dcn/12/15-12-0320-02-0thz-what-s-next-wireless-communication-beyond-60-ghz-tutorial-ig-thz.pdf

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum

B d t d b EESS

November 2012

1 Transmission in remaining bands only

Bands not used by EESS

R i i T t l il bl

  • 1. Transmission in remaining bands only
  • Very small bandwidths
  • Distributed over entire THz range

Remaining Frequency Bands Total available Bandwidth 286-294 GHz 8 GHz

 Not feasible for data rates >> 10 Gbit/s 2 Coexistent spectrum usage

286 294 GHz 8 GHz 307-313 GHz 6 GHz 356-361 GHz 5 GHz 366-369 GHz 3 GHz

2. Coexistent spectrum usage

  • Potential interference of active THz

systems with  radio astronomy

366-369 GHz 3 GHz 392-397 GHz 5 GHz 399-409 GHz 10 GHz 411 416 GHz 5 GHz

 radio astronomy  spaceborn THz sensors

 Interference investigations inevitable f t d di ti t l ith th

411-416 GHz 5 GHz 434-439 GHz 5 GHz 467-477 GHz 10 GHz 502 523 GH 21 GH

for standardization to comply with the ITU Radio Regulations

502-523 GHz 21 GHz 527-538 GHz 11 GHz 581-611 GHz 30 GHz

13.11.2012 Thomas Kürner, TU Braunschweig Slide 5 Source: https://mentor.ieee.org/802.15/dcn/12/15-12-0320-02-0thz-what-s-next-wireless-communication-beyond-60-ghz-tutorial-ig-thz.pdf

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum

I t f ith R di A t

November 2012

  • Studies available by the National Science Foundation

Interference with Radio Astronomy

  • Studies available by the National Science Foundation
  • Distance of THz transmitter from telescope for interference-free

conditions in accordance with ITU protection criteria RA.769:

  • Worst case: TX pointed directly in direction of telescope at same altitude

00-

60 50

15-10-0829-0

50 40 30 km)

  • doc. 802.15-

20 10 d (k

Several km height

IEEE 0thz

 Interference in practice extremely unlikely due high telescope

13.11.2012 Thomas Kürner, TU Braunschweig Slide 6

 Interference in practice extremely unlikely due high telescope locations on mountains

Source: https://mentor.ieee.org/802.15/dcn/12/15-12-0320-02-0thz-what-s-next-wireless-communication-beyond-60-ghz-tutorial-ig-thz.pdf

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum

I t f ith E th E l ti (1)

November 2012

  • THz transmitters operated outdoor may be pointed skyward:

Interference with Earth Exploration (1)

  • THz transmitters operated outdoor may be pointed skyward:

Reflection at rooftop

1.) Nomadic devices 2.) Fixed links 3.) Airborne systems 4.) Multiple transmitters

 Which is the maximum tolerable interference power?  How much power will be received by the satellite in the worst case?

13.11.2012

p y

Thomas Kürner, TU Braunschweig Slide 7 Source: https://mentor.ieee.org/802.15/dcn/12/15-12-0320-02-0thz-what-s-next-wireless-communication-beyond-60-ghz-tutorial-ig-thz.pdf

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum

I t f ith E th E l ti (2)

November 2012

  • Determination of maximum allowed TX output powers for

Interference with Earth Exploration (2)

  • Determination of maximum allowed TX output powers for

interference-free conditions:

1.) Allowed interference powers according to ITU Rec. 1092 2.) Modeling of path losses from TX to satellite (worst case) 3.) Allowed TX powers for inter- ference avoidance at any rate

150

MHz]

550 Nomadic Device Reflecting Object

  • 115

r [dBm]

50 100

um TX Power [dBm/M

250 350 450

Path Loss [dB]

Reflecting Object Airborne TX

  • 160
  • 145
  • 130

m Interference Power

300 475 650 825 1000

  • 50

f [GHz] Maximu

Simulation Approximation 300 475 650 825 1000 150 250

f [GHz]

300 475 650 825 1000

  • 175
  • 160

f [GHz] Maximum

 Interference possible under worst case assumptions  Definition of transmit power masks

13.11.2012

 Limitation of output powers to several 10 dBm

Thomas Kürner, TU Braunschweig Slide 8 Source: https://mentor.ieee.org/802.15/dcn/12/15-12-0320-02-0thz-what-s-next-wireless-communication-beyond-60-ghz-tutorial-ig-thz.pdf

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum

I t f ith E th E l ti (3)

November 2012

  • Maximum allowed isotropic transmit powers (worst case):

Interference with Earth Exploration (3)

  • Maximum allowed isotropic transmit powers (worst case):
  • QPSK modulation
  • 25 dBi RX antenna gain (nomadic, inflight), 55 dBi (fixed link)

5 dB RX i fi

  • 5 dB RX noise figure

300 – 320 GHz 40 Gbit/s 385 – 435 GHz 100 Gbit/s / / (1) Nomadic TX PTX,Max 35.9 dBm 47.6 dBm dMax 33 m 52 m P 40 9 dB 60 9 dB WPAN/ WLAN (2) Fixed link PTX,Max 40.9 dBm 60.9 dBm dMax 964 m 727 m (3) I fli ht PTX,Max 20.5 dBm 19.9 dBm Backhaul link Inflight

 Sufficient powers allowed to achieve acceptable distances

(3) Inflight dMax 12 m 3 m g entertainment

13.11.2012

p p  Interference mitigation required for higher powers/longer ranges

Thomas Kürner, TU Braunschweig Slide 9

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum

I t f Miti ti C t

November 2012

1 Transmit power masks

Interference Mitigation Concepts

150

MHz]

  • 1. Transmit power masks

 TX power control 2 Automatic shutdown in case of TX mispointing

50 100

m TX Power [dBm/M

  • 2. Automatic shutdown in case of TX mispointing

 Sensor data usage (e.g. orientation and position) 3 Electrically steerable antennas

300 475 650 825 1000

  • 50

f [GHz] Maximum

Simulation Approximation

  • 3. Electrically steerable antennas

 Automatic precise beam pointing 4 Environment control

  • 4. Environment control
  • Fixed links
  • Airborne systems

 Careful TX placement  Absorbing materials

13.11.2012 Thomas Kürner, TU Braunschweig Slide 10

 Avoidance of interference in any case with interference mitigation

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum

Di l ith R t ti f

November 2012

Dialogue with Representatives from Passive Services

  • IG THz has started the dialogue quite early with representatives from

passive services

  • Presentations have been made to the IG THz both from representatives
  • f Radio Astronomy and EESS

– https://mentor.ieee.org/802.15/dcn/11/15-11-0765-00-0thz-remote-sensing- p g g applications-of-thz-bands.pdf – https://mentor.ieee.org/802.15/dcn/10/15-10-0829-00-0thz-sharing-between-active- and-passive-services-at-thz-frequencies.ppt

Discussion started also with the Conference on Radio Frequencies

  • Discussion started also with the Conference on Radio Frequencies

(CORF)

– https://mentor.ieee.org/802.15/dcn/12/15-12-0322-00-0thz-2-status-report-of-meeting- with-passive-sciences-corf-committee.pdf with passive sciences corf committee.pdf

13.11.2012 Thomas Kürner, TU Braunschweig/Germany Slide 11

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum November 2012

Source: https://mentor.ieee.org/802.15/dcn/12/15-12-0322-00-0thz-2-status-report-of-meeting-with-passive-sciences-corf-committee.pdf 13.11.2012

  • D. Britz, AT&T Shannon Labs

p g p g p p

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum November 2012

Situation at ITU-R

  • Next WRC does not include any agenda item

dealing with frequencies beyond 275 GHz

  • However, a couple of questions related to or

, p q having impact on THz communications have been submitted to ITU-R

13.11.2012 Thomas Kürner, TU Braunschweig/Germany Slide 13

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum November 2012

THz related Question ITU-R

  • Question ITU-R 264/4 on technical and operational

characteristics of networks of the fixed-satellite i ti b 275 GH (WP4A) service operating above 275 GHz; (WP4A)

  • Question ITU-R 235-1/7 on technical and operational

characteristics of applications of science services characteristics of applications of science services

  • perating above 275 GHz;(WP7B/WP7C/WP7D)
  • Question ITU-R 228-1/3 on propagation data required
  • Question ITU-R 228-1/3 on propagation data required

for the planning of radiocommunication systems

  • perating above 275 GHz; (WP3M)

p g ( )

  • Question ITU-R 253/5 Fixed service use and future

trends; (WP5C)

13.11.2012 Iwao Hosako, NICT Slide 14 Source https://mentor.ieee.org/802.15/dcn/12/15-12-0416-00-0thz-thz-standardisation-activities-on-itu-r.pdf

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum November 2012

Proposal on New Study Question

  • Question ITU-R SM [THZ] “Technical and operational
  • Question ITU-R SM. [THZ], Technical and operational

characteristics of the active services operating in the range 275-1 000 GHz” was proposed at WP1A meeting on July 2012 (1A/25) meeting on July 2012. (1A/25)

  • This Question was proposed to study;

– What are the technical and operational parameters, and the h t i ti f ti i i th f 275 1 characteristics of active services in the frequency range 275-1 000 GHz. – Are sharing studies required for active services operating in the range 275 1 000 GHz? the range 275-1 000 GHz?

  • This proposal was liaised with the concerned Working

Parties via liaison statement (1A/40) and will be d ft d t th t WP1A ti di t th i redrafted at the next WP1A meeting according to their comments from the concerned Working Parties.

  • Administrations interested in this Question are invited

13.11.2012

Q to review and input their comments.

Iwao Hosako, NICT Slide 15 Source https://mentor.ieee.org/802.15/dcn/12/15-12-0416-00-0thz-thz-standardisation-activities-on-itu-r.pdf

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum November 2012

Question ITU-R 253/5

This Question was proposed to study; This Question was proposed to study; What are the key trends and drivers of technologies and applications for the fixed service across the different FS b d th 2013 2023 i d d b d t ki i t bands over the 2013-2023 period and beyond, taking into account: – deployment scenarios, propagation considerations, p y , p p g , technology developments, capacity and spectrum requirements; – the use of the higher millimeter wave frequency – the use of the higher millimeter wave frequency bands (e.g. above 60 GHz); – the technical and operational requirements for fixed i l t ti i th hi h illi t wireless systems operating in the higher millimeter wave bands, including high capacity, e.g. Gigabit- class, links?

13.11.2012 Iwao Hosako, NICT Slide 16 Source https://mentor.ieee.org/802.15/dcn/12/15-12-0416-00-0thz-thz-standardisation-activities-on-itu-r.pdf

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum

DRAFT NEW REPORT ITU R F [FS USE

November 2012

DRAFT NEW REPORT ITU-R F.[FS USE- TRENDS] - Fixed service use and future trends

CONTENTS 3 FWS technology and trends 3 1 R t FWS t h l i d f b d 3.1 Recent FWS technologies and frequency bands 3.1.1 Gigabit higher millimeter wave links 3 1 2 Applications and examples of FWA systems 3.1.2 Applications and examples of FWA systems 3.1.3 Gigabit higher millimeter wave links 3.1.4 Future technologies 3.2 Propagation considerations 3.3 Antennas trends 3 4 D l t i 3.4 Deployment scenarios 3.5 Capacity and spectrum requirements 4 Future subjects for the development of FS applications

13.11.2012

4 Future subjects for the development of FS applications

Iwao Hosako, NICT Slide 17 Source https://mentor.ieee.org/802.15/dcn/12/15-12-0416-00-0thz-thz-standardisation-activities-on-itu-r.pdf

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doc.: IEEE 802.15-12-0619-01-0000-THz_Spectrum November 2012

Next Steps

  • What should be the role of IEEE 802 in the

f t d i th ti ? process of studying these questions?

  • What is the advice from IEEE 802.18?

13.11.2012 Thomas Kürner, TU Braunschweig Slide 18