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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)

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Presentation on theme: "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)"— Presentation transcript:

1 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: 2012-11-14 Authors:

2 doc.: IEEE 802.11-12/1396r0 Submission Nov. 2012 Hiroshi Harada (NICT)Slide 2 Abstract This presentation contains current status toward introducing TV white space applications in Japan. DateDoc NumberContents May 201212/0677r0History and status History of report

3 doc.: IEEE 802.11-12/1396r0 Submission Nov. 2012 Hiroshi Harada (NICT)Slide 3 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

4 doc.: IEEE 802.11-12/1396r0 Submission 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 Hiroshi Harada (NICT)Slide 4 Freq. ISDB-T one channel (6 MHz) Freq. ISDB-T one channel (6 MHz) 1 segment x 13 DQPSK64 QAM 1 seg or 3seg Oneseg requirement Bandwidth428.57 kHz Mode 1Mode 2Mode3 Subcarrier spacing (kHz) 5.9681.9840.992 Num of subcarrier108216432 Symbol duration (us)2525041008 Guard interval¼,1/8,1/16,1/32 FEC(inncer code)Convolutional (1/2,2/3,3/4,5/6,7/8) Outer codeRS(204,188)

5 doc.: IEEE 802.11-12/1396r0 Submission Coexistence between White Space Systems Nov. 2012 Hiroshi Harada (NICT)Slide 5 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 of interference Calculation of interference Calculation of interference (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)

6 doc.: IEEE 802.11-12/1396r0 Submission 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 Hiroshi Harada (NICT)Slide 6

7 doc.: IEEE 802.11-12/1396r0 Submission Coexistence mechanism proposed in the report Nov. 2012 Hiroshi Harada (NICT)Slide 7 MIC M1.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 microphone operators Ubiquitous broadcasting promotion alliance and forum Ubiquitous broadcasting operators Request to reduce interference U3.Provide license U2.Submit license application form U1.Negotiation to find operational band Information sharing

8 doc.: IEEE 802.11-12/1396r0 Submission 802.11af demonstration Nov. 2012 Hiroshi Harada (NICT)Slide 8

9 doc.: IEEE 802.11-12/1396r0 Submission Demonstration of 802.11af at WiFi alliance meeting Overview Nov. 2012 Hiroshi Harada (NICT)Slide 9

10 doc.: IEEE 802.11-12/1396r0 Submission Nov. 2012 Hiroshi Harada (NICT)Slide 10 Demonstration of 802.11af at WiFi alliance meeting Construction 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 Internet 1 SegTV transmitter Router

11 doc.: IEEE 802.11-12/1396r0 Submission Nov. 2012 Hiroshi Harada (NICT)Slide 11 Demonstration of 802.11af at WiFi alliance meeting White 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

12 doc.: IEEE 802.11-12/1396r0 Submission Nov. 2012 Hiroshi Harada (NICT)Slide 12 Demo system Demonstration of 802.11af at WiFi alliance meeting 11af AP and STA

13 doc.: IEEE 802.11-12/1396r0 Submission Nov. 2012 Hiroshi Harada (NICT)Slide 13 Demonstration of 802.11af at WiFi alliance meeting Registered location secure server (RLSS)

14 doc.: IEEE 802.11-12/1396r0 Submission Appendix Nov. 2012 Hiroshi Harada (NICT)Slide 14

15 doc.: IEEE 802.11-12/1396r0 Submission 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 Hiroshi Harada (NICT)Slide 15

16 doc.: IEEE 802.11-12/1396r0 Submission Nov. 2012 Hiroshi Harada (NICT)Slide 16 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)

17 doc.: IEEE 802.11-12/1396r0 Submission 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 Hiroshi Harada (NICT)Slide 17

18 doc.: IEEE 802.11-12/1396r0 Submission 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 Hiroshi Harada (NICT)Slide 18

19 doc.: IEEE 802.11-12/1396r0 Submission 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 Hiroshi Harada (NICT)Slide 19

20 doc.: IEEE 802.11-12/1396r0 Submission 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 Hiroshi Harada (NICT)Slide 20

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