1. Fostering worldwide interoperabilityGeneva, 13-16 July 2009 ARIB Standards Development for Broadband Wireless Access systems Kohei SATOH Managing Director, ARIB Global Standards Collaboration (GSC) 14 DOCUMENT #:GSC14-GRSC7-010 FOR:Presentation SOURCE:ARIB AGENDA ITEM:4.1 CONTACT(S):y-wachi@arib.or.jp

2. Fostering worldwide interoperability 2 Geneva, 13-16 July 2009 Highlight of Current Activities (1) Broadband Wireless Access (BWA) Sub-committee consists of four working groups in ARIB. They mainly assume a role in producing national standards for WiMAX, Next Generation PHS and IEEE802.20 referring to relevant international standards. International Relations WG To establish coordination framework with relevant international standardization bodies WiMAX WG To develop and maintain ARIB standard for mobile WiMAX system and to liaise with relevant international standard bodies Next Generation PHS WG To develop and maintain ARIB standard for Next Generation PHS system and to liaise with relevant international standardization body (note: PHS MOU Group has changed its name to XGP, eXtended Global Platform in April 2009, however, there is no influence on the naming of “Next Generation PHS” in ARIB at present.) 802.20 WG To develop and maintain ARIB standard for IEEE802.20 TDD Wideband and 625k-MC Modes and to liaise with relevant international standardization body

3. Fostering worldwide interoperability 3 Geneva, 13-16 July 2009 Highlight of Current Activities (2) Development of standards Standards consist of national regulatory requirements specified in MIC Ordinance Regulating Radio Equipment and international technical requirements standardized by international standard bodies. Three standards were produced under the following titles. STD-T94 OFDMA Broadband Mobile Wireless Access System (WiMAX applied in Japan), in December 2007 STD-T95 OFDMA Broadband Wireless Access System (Next Generation PHS), in December 2007 STD-T97 Mobile Broadband Wireless Access Systems (IEEE 802.20 TDD Wideband and 625k-MC Modes Application in Japan), in September 2008 Liaison with International standardization organizations ARIB established the liaisons with the following organizations on reproducing or their standards into ARIB standards. WiMAX Forum and IEEE802.16 WG for WiMAX standard XGP (former PHS MOU Group) for Next Generation PHS standard IEEE 802.20 WG for IEEE 802.20 standard

4. Fostering worldwide interoperability 4 Geneva, 13-16 July 2009 Strategic Direction ARIB standards are developed in line with international standards as much as possible and the national regulatory requirements are incorporated into the standards as mandatory requirements. In case of inconsistency between national requirements and international standards, the national requirements are to be incorporated into the international Standards. The national requirements prevail, however, if the inconsistency is not resolved. ARIB agrees with relevant international standard organizations on reproducing their standard documents into ARIB standards under the following conditions. International standard documents are reproduced to ARIB standard on an as is basis. ARIB is allowed to copy and distribute the standards through its website or by photocopy. International standard organizations disclaims all warranties in relation to use of their documents.

5. Fostering worldwide interoperability 5 Geneva, 13-16 July 2009 Challenges As for WiMAX standard there is a need to compile international standards since they were developed by two different organizations. IEEE802.16 defines PHY and MAC layer specifications, while WiMAX Forum works on profiling the IEEE802.16 specifications and developing the upper layer network architecture. Reproduction of IEEE documents in ARIB standard is subject to consent made between ARIB and IEEE. ARIB needs to follow future updates of international standard documents and to revise ARIB standards accordingly.

6. Fostering worldwide interoperability 6 Geneva, 13-16 July 2009 Next Steps/Actions (1) ARIB standards STD-T94, STD-T95 and STD-T97 are maintained and updated in the event that the referenced international standards are modified. Following modifications are planned to be implemented: STD-T94 Revise “Mobile System Profile” release 1.0 to release1.5 Revise “End-to-End Network Systems Architecture” release 1.1 to release 1.5 Add “Mobile Radio Specification” STD-T95 Revise STD-T95 based on the modification planned by XGP STD-T97 Add “802.20.2 Protocol Implementation Conformance Statements” Add “802.20.3 Minimum Performance Specifications” Amend the “802.20 Management Information Base” chapter Add information on Standard 802.1Q-2005 amendment for bridging 802.20 MAC

7. Fostering worldwide interoperability 7 Geneva, 13-16 July 2009 Mobile WiMAX Pilot Launch Pilot Launch - 2/26/2009 UQ Communications launches its pilot service on February 26th, 2009. The service covers Central Tokyo and Vicinity where about 10% of Japan's overall population reside (Japan population: 127Million). About 6,000 Pilot users enjoy free pilot service until the end of June. WiMAX Devices UQ prepares data cards and WiMAX/Wi-Fi CPE for pilot users in order to accelerate the adaption. Speed and Quality The measured throughput on the general speed test site reaches: Download 16Mbps, Upload 3Mbps. There still are some areas where WiMAX is not available. UQ is building base stations to fill the gap. UQ WiMAX Wi-Fi Gateway UQ WiMAX Data Cards Next Steps/Actions (2)

8. Fostering worldwide interoperability 8 Geneva, 13-16 July 2009 Mobile WiMAX Commercial Service Commercial Launch - 7/1/2009 UQ Communications launches its commercial service on July 1st, 2009. The service coverage is expanded to Greater Tokyo and other biggest cities (Osaka, Kyoto, Kobe, Nagoya) where about 20% of Japan's overall population reside (Japan population: 127Million). UQ provides flat rate monthly access at 4,480JPY without any long term contract. A variety of WiMAX Devices A variety of WiMAX embedded laptop, data cards and CPEs are expected to be sold as operator-free devices Subscribers can select any WiMAX operator including MVNOs after the device purchase. MVNOs The WiMAX network is open to MVNOs, and many MVNOs start its services. Coverage Expansion Tokyo Osaka Nagoya Tokyo 2/26/2009 7/1/2009 WiMAX Embedded Laptop Next Steps/Actions (3)

9. Fostering worldwide interoperability 9 Geneva, 13-16 July 2009 Proposed Resolution [optional] N/A

10. Fostering worldwide interoperability 10 Geneva, 13-16 July 2009 Supplementary Slides

11. Fostering worldwide interoperability 11 Geneva, 13-16 July 2009 Advanced Wireless Communications Study Committee (ADWICS) of ARIB - To conduct technical studies on IMT-2000,IMT- Advanced and Broadband Wireless Access (BWA) - To contribute to the global standardization Objectives Missions - Study on Technical Aspects of above three areas - Prepare for Standard Proposals - Contribute to Standardization at ITU - Take Cooperation with Standardization Bodies Overseas (Effective on April 1, 2006) Advanced Wireless Communications Study Committee Steering Committee BWA Subcommittee IMT-Advanced Subcommittee IMT Partnership Subcommittee

12. Fostering worldwide interoperability 12 Geneva, 13-16 July 2009 BWA Subcommittee Scope of Work The BWA Subcommittee has been established so as to study technologies on broadband wireless access (BWA) systems and standardize their technical specifications as ARIB Standards. Current target systems are broadband wireless access systems in the 2.5 GHz band of which technical conditions have been studied by Telecommunications Council. Technologies under Study Mobile WiMAX (based on IEEE 802.16-2004 Standard amended by 802.16e- 2005) Mobile Broadband Wireless Access (based on IEEE 802.20 Standard) - Wideband Mode - 625k-MC Mode Next-Generation PHS (based on XGP (former PHS MoU Group) Standard) BWA Subcommittee International Relations WG Next-Generation PHS WG 802.20 WG WiMAX WG

13. Fostering worldwide interoperability 13 Geneva, 13-16 July 2009 Introduction of BWA (Mobile Application) in Japan May 2007: MIC decided Radio Regulation July 2007 :MIC decided License Policy September 2007 : MIC started to receive license application December 2007 : Two operators, one utilizes RIT of mobile WiMAX and the other utilizes Next-Generation PHS, were licensed February 2009: Mobile WiMAX pilot service started April 2009 :Next-Generation PHS pilot service started July 2009:Mobile WiMAX commercial service will start October 2009 :Next-Generation PHS commercial service will start Mobile BWA G.B. FWA 2535MHz 2545 2555 257525952625 2630 Total 10MHz * : Limited operation allowed until the end of 2014 within 2545MHz - 2555MHz. *

14. Fostering worldwide interoperability 14 Geneva, 13-16 July 2009 Main parameters of WiMAX/Next-Generation PHS ≤ 12 dBiAntenna Gain ≤ 10 WTransmission Power 30.00 μs 37.5 kHz Sub-Carrier Frequency Spacing 2.4 MHz, 4.8 MHz, 9.6 MHz System Bandwidth Multiple Access TDDDuplexing Next Generation PHSMobile WiMAX OFDMA / TDMA TDD OFDM Symbol Duration BS MS BS MS ≤ 4 dBi ≤ 200 mW OFDM / OFDMA 2.5 ms (same as PHS) Transmission Burst Length BS MS 2.5 ms (same as PHS) BPSK, QPSK, 16QAM, 64QAM, 256QAM Modulation QPSK, 16QAM BS MS BPSK, QPSK, 16QAM, 64QAM 1.35 ms, 1.45 ms, 1.55 ms, 1.65 ms, 1.75 ms, 1.85 ms, 1.95 ms, 2.05 ms, 2.15 ms, 2.25 ms 3.65 ms, 3.55 ms, 3.45 ms, 3.35 ms, 3.25 ms, 3.15 ms, 3.05 ms, 2.95 ms, 2.85 ms, 2.75 ms, 5 MHz, 10 MHz 10.94 kHz 102.9 μs ≤ 20 W ≤ 2 dBi ≤ 17 dBi ≤ 200 mW

15. Fostering worldwide interoperability 15 Geneva, 13-16 July 2009 Main parameters of IEEE 802.20 ≤ 11 dBi Antenna Gain 5MHz sys: ≤ 19 W, 10MHz sys: ≤ 38 W Transmission Power 5 MHz(600kHz x8), 10 MHz(600kHz x16) System Bandwidth Multiple Access TDDDuplexing 625k-MC ModeWideband Mode FDM/TDM/SDM, FDMA/TDMA/SDMA TDD BS MS BS MS Type A: ≤ 0 dBi, Type B: ≤ 4 dBi ≤ 200 mW OFDM / OFDMA BPSK, QPSK, 8PSK, 12QAM, 16QAM, 24QAM, 32QAM, 64QAM, Modulation BS, MS QPSK, 8PSK, 16QAM, 64QAM 5 MHz, 10 MHz ≤ 20 W ≤ 0 dBi ≤ 17 dBi Type A: ≤ 158 mW, Type B: ≤ 0.5W Transmission Burst Length Reverse Link: 911.46 x N μs Forward Link: With preamble: 911.46 x M μs Without preamble: 1070 + 911.46 x M μs Above to be amended to be compliant with 802.20-2008 Reverse Link: 1.635ms, Forward Link: 3.270ms