Doc.: IEEE 802.11-12/1396r0 Submission Nov. 2012 Hiroshi Harada (NICT)Slide 1 Status Report on Usage of TV White Space in Japan (Liaison Report to JP MIC)

doc.: IEEE 802.11-12/1396r0

Submission

Nov. 2012

Hiroshi Harada (NICT)Slide 1

Status Report on Usage of TV White Space in Japan (Liaison Report to JP MIC)

Date: 2012-11-14Authors:

doc.: IEEE 802.11-12/1396r0

Submission

Nov. 2012


Abstract

This presentation contains current status toward introducing TV white space applications in Japan.

Date Doc Number Contents

May 2012 12/0677r0 History and status

History of report

doc.: IEEE 802.11-12/1396r0

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Nov. 2012


• Since Nov. 2009, white space operation has been discussed in Ministry of Internal Affairs and Communications (MIC) in order to secure bandwidth

• Five main applications are under discussion in the Meeting (Council) for White Space Promotion in MIC

– Wireless microphone (Will start in FY 2013, highest level of priority in the secondary systems)

– Ubiquitous broadcasting (Area-one-segment broadcasting service, Area oneseg)• White space operation has already started

– Sensor network

– Wireless broadband

– Wireless access systems for emergency situation (disaster)

• Area oneseg services have been permitted to do actual services in TV white space with conditions summarized by White space utilized broadcasting system WG, Broadcasting system committee, Information and Communications Council in MIC

– Not license-exempt

– Actual services can be started (Japan is second country that allows commercial frequency sharing service of TV white space)

• Coexisting mechanism: Coexistence WG is launched under council for white space promotion and is studying the concrete schemes

Summary of the last report

doc.: IEEE 802.11-12/1396r0

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Oneseg broadcasting service• Based on ISDB-T

– Divided13 segment (13 OFDM segment) in a channel

– Can divide maximum three parts

– Use OFDM transmission scheme

• Standardized in ARIB STD-B31 and TR-B14 (operational rules)

• Oneseg broadcasting is mainly used for mobile broadcasting in amusement facilities and air port , digital signage, and so on

Nov. 2012


Freq.

ISDB-T one channel (6 MHz)

Freq.

ISDB-T one channel (6 MHz)

1 segment x 13

DQPSK 64 QAM

1 seg or 3segOneseg requirement

Bandwidth 428.57 kHz

Mode 1 Mode 2 Mode3

Subcarrier spacing (kHz) 5.968 1.984 0.992

Num of subcarrier 108 216 432

Symbol duration (us) 252 504 1008

Guard interval ¼,1/8,1/16,1/32

FEC(inncer code) Convolutional (1/2,2/3,3/4,5/6,7/8)

Outer code RS(204,188)

doc.: IEEE 802.11-12/1396r0

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Coexistence between White Space SystemsNov. 2012


Secondary users B1(Using wireless access B)

Secondary users B2(Using wireless access B)

Secondary user A1(Using wireless access A)

Primary users(Licensed users)

Servers are launched with centerized or distribution manner

干渉量の計算

Calculation ofinterference



(a) WSDB for co-existing between primary and secondary

users

(b) WSDB for co-existing between secondary users that uses different wireless access (eg.

802.19) (c) WSDB for co-existing between

secondary users that uses common wireless access (eg.

802.11af)

doc.: IEEE 802.11-12/1396r0

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Current topics

• Coexistence mechanism between white space systems is being discussed in the committee for white space promotion, MIC

– Points to be discussed• Who provide available channel map on white space: MIC (but for wireless microphone operator)

• Who permit to use white space: MIC

• Will use WSDB ?: No, MIC will check the availability for regulation and provide license

• Who will manage coexistence between WS systems: Continue to discuss

– Provided a report on summary of discussion and future plan and opened it on September, and public comment was done.

– The report mainly summarized how to coexist between WS systems.• Mainly for coexistence between wireless microphone and ubiquitous broadcasting

• Coexistence including WS communication systems will be discussed after deciding coexistence mechanism between wireless microphone and ubiquitous broadcasting. R&D is encouraged for the topics

• 802.11af fundamental systems has been developed and demonstrated at WiFi alliance meeting held in Tokyo

Nov. 2012


doc.: IEEE 802.11-12/1396r0

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Coexistence mechanism proposed in the report

Nov. 2012


MICM1.Provide WS channel lists

M2.Submit license application form

M3.Provide license

M4. Report operational bands

M5. Request to do coexistence with primary and secondary operators

• Provide channel list• Update channel list• Evaluate application of license• Provide license

U4. Report operational bands

U5. Request to do coexistence with primary and secondary operators

Primary users

Wireless microphone promotion alliance and forum

Wireless microphoneoperators

Ubiquitous broadcastingpromotion alliance and forum

Ubiquitous broadcastingoperators

Request to reduce interference

Request to reduce interference

U3.Provide license U2.Submit license

application form

U1.Negotiation to find operational band

Information sharing

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802.11af demonstration

Nov. 2012


doc.: IEEE 802.11-12/1396r0

Submission

Demonstration of 802.11af at WiFi alliance meetingOverview

Nov. 2012


RLSS

Access point 1GDC enabling STA

Station 1GDC dependent

STAWhite space database 1

Access point 2GDC enabling STA


STA

White space database 2


STA

doc.: IEEE 802.11-12/1396r0

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Nov. 2012


Demonstration of 802.11af at WiFi alliance meetingConstruction of the prototype

• TVWS Database, RLSS, AP and Stations are implemented

• TVWS Database

• Protection rules of primary users (FCC, Ofcom, Japanese rules)

• Primary user only digital TV

• IETF PAWS based on HTTP implemented for database query

• RLSS

• 802.11af draft D2.0 implemented

• RLQP implemented for communicating RLSS

• AP and STAs

• MAC: 802.11af D2.0 implemented

• PHY:

• 802.11a re-band to Japanese digital TV bands

• 802.11af based PHY

FCC WSDB

11af AP #１

11af STA #１

11af AP #２11af STA #２

11af STA #３

RLSS

Internet ワンセグ送信機1 SegTV transmitter

Router

doc.: IEEE 802.11-12/1396r0

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Nov. 2012


Demonstration of 802.11af at WiFi alliance meetingWhite Space Database

The database is located at Yokosuka Research Park (YRP)

This snapshot shows the channel availability of Tokyo Hilton according to the FCC rules

doc.: IEEE 802.11-12/1396r0

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Nov. 2012


Demo system

Demonstration of 802.11af at WiFi alliance meeting11af AP and STA

doc.: IEEE 802.11-12/1396r0

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Nov. 2012


Demonstration of 802.11af at WiFi alliance meetingRegistered location secure server (RLSS)

doc.: IEEE 802.11-12/1396r0

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Appendix

Nov. 2012


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Key committee

• MIC (Ministry of Internal Affairs and Communications)

• MIC: Investigation Team concerning Ideas for the Use of New Radio Waves

• MIC: Meeting for White Space Promotion

• MIC: Broadcasting system committee, Information and Communications Council,

Nov. 2012


doc.: IEEE 802.11-12/1396r0

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Nov. 2012


History(1/3)

• 2009/11: Investigation team concerning ideas for the Use of new radio waves launched.

• 2009/12-2010/01: Call for proposal for the usage of white space, more than 100 proposals are submitted.

• 2010/08: Investigation team report summarized, – “Promote new frequency utilization such as white space and find

possibilities for local revitalization, business opportunities, and engineering innovation.”

• 2010/07: Investigation team selected 10 proposals as preceding model– All propose dedicated area broadcasting service based on one

segment type ISDB-T broad casting (Area-oneseg service)

doc.: IEEE 802.11-12/1396r0

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History (2/3)

• 2010/09: Meeting for White Space Promotion launched

• 2010/10: Broadcasting system committee, Information and Communications Council launched a working group for white space utilized broadcasting system

Nov. 2012


doc.: IEEE 802.11-12/1396r0

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History (3/3)

• 2010/09-10: MIC called for the proposal on special white space areas and its usage. – 44 proposals were submitted.

• 2011/04: 25 proposals (white space areas) were accepted– 23 ubiquitous broadcasting (Area-oneseg)

– 1 broadband internet

– 1 sensor network

• 2011/09: Working group for coexistence in white space applications launched

• 2012/03: Coexistence WG issued first report issued

• 2012/03: White space utilized broadcasting system WG first report issued

Nov. 2012


doc.: IEEE 802.11-12/1396r0

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Meeting(Committee) for White Space Promotion

• Objectives– Expand nation-wide white space utilization

• Mission– Select and evaluate “special white space areas”

– Exchange ideas regarding priorities for “special white space areas”

– Challenge facing the practical use of white space

– Make rules for the expansion of businesses utilizing white space

– Make environmental improvements to prevent interference with existing systems

• Status– September 2010: Meeting launched

– September 2011: Working group for coexistence in white space applications launched

Nov. 2012


doc.: IEEE 802.11-12/1396r0

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Working group for coexistence in white space applications

• Objectives and mission– Study coexisting mechanism in white space applications from the

viewpoint of technical, institutional, and operation aspects

– Report the conclusions to the meeting Meeting for White Space Promotion

• Status– September 2011: Working group launched

– March 2012: First report issued

Nov. 2012


Documents

Doc.: IEEE 802.11-12/1396r0 Submission Nov. 2012 Hiroshi Harada (NICT)Slide 1 Status Report on Usage of TV White Space in Japan (Liaison Report to JP MIC)