Nov 2012 doc IEEE 802 11 121396 r

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 Status Report on Usage of TV White Space in Japan (Liaison Report to JP MIC) Date: 2012 -11 -14 Authors: Submission Slide 1 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 Abstract This presentation contains current status toward introducing TV white space applications in Japan. History of report Date Doc Number Contents May 2012 12/0677 r 0 History and status Submission Slide 2 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 Summary of the last report • • 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 Submission Slide 3 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 Oneseg broadcasting service • • • Based on ISDB-T – Divided 13 segment (13 OFDM segment) in a channel – Can divide maximum three parts – Use OFDM transmission scheme Standardized in ARIB STD-B 31 and TR-B 14 (operational rules) Oneseg broadcasting is mainly used for mobile broadcasting in amusement facilities and air port , digital signage, and so on ISDB-T one channel (6 MHz) 428. 57 k. Hz Mode 1 Mode 2 Mode 3 Subcarrier spacing (k. Hz) 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) Submission Freq. 1 seg or 3 seg Oneseg requirement Bandwidth 1 segment x 13 Freq. ISDB-T one channel (6 MHz) DQPSK Slide 4 64 QAM Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 Coexistence between White Space Systems (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. 11 af) Primary users (Licensed users) 干渉量 of Calculation の計算 interference Secondary user A 1 (Using wireless access A) Calculation of interference Secondary users B 1 (Using wireless access B) Secondary users B 2 (Using wireless access B) Servers are launched with centerized or distribution manner Submission Slide 5 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 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. 11 af fundamental systems has been developed and demonstrated at Wi. Fi alliance meeting held in Tokyo Submission Slide 6 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 Coexistence mechanism proposed in the report Primary users Request to reduce interference Information sharing Wireless microphone promotion alliance and forum M 5. Request to do coexistence with primary and secondary operators M 4. Report operational bands Wireless microphone operators M 2. Submit license application form U 3. Provide license U 4. Report operational bands U 5. Request to do coexistence with primary and secondary operators Ubiquitous broadcasting operators U 2. Submit license application form MIC • • Submission Ubiquitous broadcasting promotion alliance and forum U 1. Negotiation to find operational band M 3. Provide license M 1. Provide WS channel lists Request to reduce interference Provide channel list Update channel list Evaluate application of license Provide license Slide 7 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 802. 11 af demonstration Submission Slide 8 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 Demonstration of 802. 11 af at Wi. Fi alliance meeting Overview Submission Slide 9 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 Demonstration of 802. 11 af at Wi. Fi 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. 11 af draft D 2. 0 implemented • RLQP implemented for communicating RLSS AP and STAs • MAC: 802. 11 af D 2. 0 implemented • PHY: • 802. 11 a re-band to Japanese digital TV bands • 802. 11 af based PHY Router Internet Submission 1 Seg. TV transmitter Slide 10 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 Demonstration of 802. 11 af at Wi. Fi alliance meeting White Space Database This snapshot shows the channel availability of Tokyo Hilton according to the FCC rules The database is located at Yokosuka Research Park (YRP) Submission Slide 11 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 Demonstration of 802. 11 af at Wi. Fi alliance meeting 11 af AP and STA Demo system Submission Slide 12 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 Demonstration of 802. 11 af at Wi. Fi alliance meeting Registered location secure server (RLSS) Submission Slide 13 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 Appendix Submission Slide 14 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 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, Submission Slide 15 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 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) Submission Slide 16 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 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 Submission Slide 17 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 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 Submission Slide 18 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 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 Submission Slide 19 Hiroshi Harada (NICT)

Nov. 2012 doc. : IEEE 802. 11 -12/1396 r 0 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 Submission Slide 20 Hiroshi Harada (NICT)