1. Request For A New 3GPP2 TDD TSG Eric Jacks LinkAir Communications Santa Clara, CA 3GPP2 SC Meeting Sapporo, Japan Oct. 31, 2002

2. Can 3GPP2 Have Broad Visions? 3GPP2 should always be the source of original ideas. 3GPP2 should always be the source of original ideas. 3GPP2 should study all the 3G and B3G cellular options. 3GPP2 should study all the 3G and B3G cellular options. 3GPP2 should keep solving the questions of 3G systems globally. 3GPP2 should keep solving the questions of 3G systems globally.

3. LinkAir’s Request Create a new TDD TSG within 3GPP2 to: Create a new TDD TSG within 3GPP2 to: –Investigate and standardize the various TDD technologies that are available. –Bring 3GPP2 in line with other Industry Associations (3GPP, IEEE 802.11/16, etc) that have prepared, or are preparing standards to take advantage of TDD Spectrum globally. –Reiterate LinkAir’s request made via contribution: “TDD System in 3G and B3G” as presented at the 3GPP2 Vision JEM in San Diego, CA in July/2002.

4. Benefits Of Forming A TDD TSG Now Japan, China, and US have yet to auction or allocate their TDD spectrum to operators. Japan, China, and US have yet to auction or allocate their TDD spectrum to operators. – Good time to begin the evaluation process for TDD technologies in order to have standards ready for release once spectrum is available. Institute a competitive presence with 3GPP and IEEE in the TDD arena. Institute a competitive presence with 3GPP and IEEE in the TDD arena. Increased revenue to 3GPP2 from TDD-based companies becoming members. Increased revenue to 3GPP2 from TDD-based companies becoming members.

5. Why TDD? TDD Spectrum Available TDD Spectrum Available ITU Activities ITU Activities US: FCC Activities US: FCC Activities Other Groups Promoting TDD Other Groups Promoting TDD

6. TDD Spectrum Availability TDD-capable spectrum is available in: TDD-capable spectrum is available in: –China: (IMT-2000 Band-plan: 1900-1920 Mhz & 2010-2025 Mhz) –Japan: (IMT-2000 Band-plan: 1893.8-1920 Mhz) –US: Unpaired 1670-1675 Mhz band (Auction April/2003)Unpaired 1670-1675 Mhz band (Auction April/2003) Unpaired 2385-2390 Mhz band (Auction: TBA)Unpaired 2385-2390 Mhz band (Auction: TBA) 2500 - 2690 Mhz band2500 - 2690 Mhz band –Europe: (IMT-2000 Band-plan: 1900-1920 Mhz & 2010- 2025 Mhz)

7. ITU Activities ITU-R WP8F: (September 25 - October 2, 2002 meeting in Geneva, Switzerland) ITU-R WP8F: (September 25 - October 2, 2002 meeting in Geneva, Switzerland) –Spectrum Working Group developed a Preliminary Draft New Report (PDNR) on: "Mitigating Techniques to Address Coexistence Between IMT- 2000 TDD and FDD Radio Interface Technologies within the Frequency Range 2500-2690 MHz operating in Adjacent Bands and in the Same Geographical Area.“"Mitigating Techniques to Address Coexistence Between IMT- 2000 TDD and FDD Radio Interface Technologies within the Frequency Range 2500-2690 MHz operating in Adjacent Bands and in the Same Geographical Area.“ –Report addresses potential improvements brought about when mitigation techniques are applied to the results of existing ITU TDD-FDD coexistence studies.

8. US: FCC Activities FCC Auction 46:Unpaired 1670-1675 Mhz band to be auctioned April 30, 2003. FCC Auction 46:Unpaired 1670-1675 Mhz band to be auctioned April 30, 2003. –Also, December 21, 2001 - Report & Order and Memorandum Opinion & Order (FCC 01-382) calls for the reallocation of the 2385-2390 MHz as unpaired spectrum. (Auction date: TBA) FCC 01-382FCC 01-382 Wireless Communication Association Int’l (WCAI) - Oct. 7, 2002):Presented the FCC with a detailed proposal designed to assist in the Commission’s efforts toward amending its regulatory rules for the 2500-2690 Mhz band Wireless Communication Association Int’l (WCAI) - Oct. 7, 2002):Presented the FCC with a detailed proposal designed to assist in the Commission’s efforts toward amending its regulatory rules for the 2500-2690 Mhz band –Provides a band-plan that provides commercial and educational system operators with either FDD or TDD services. (Most current licensees will have 16.5 MHz for TDD operations.)

9. Other Groups Promoting TDD 3GPP TSG-RAN WG1: Currently evaluating the performance impact of including an OFDM channel with the existing UMTS HSDPA design. Also, on- going efforts with UTRA-TDD and TD-SCDMA. 3GPP TSG-RAN WG1: Currently evaluating the performance impact of including an OFDM channel with the existing UMTS HSDPA design. Also, on- going efforts with UTRA-TDD and TD-SCDMA. –Note: OFDM = TDD-based system IEEE 802.16 Mobile Broadband Wireless Access (MBWA):Formed study group to establish requirements for an MBWA system IEEE 802.16 Mobile Broadband Wireless Access (MBWA):Formed study group to establish requirements for an MBWA system –These requirements permit TDD capabilities, while operating in 2- 11GHz band. Low and high mobility cases being reviewed. TDD Coalition: Mission -- To promote TDD technologies and services, benefits, and requirements and considerations for implementing TDD. TDD Coalition: Mission -- To promote TDD technologies and services, benefits, and requirements and considerations for implementing TDD. –Active in: ITU-R WP8F, 3GPP, IEEE 802.16 MBWA, TD-SCDMA Forum, DECT Forum, and 3GPP2. Includes direct correspondence and TDD tutorials with the FCC.

10. What does all this mean? TDD is here to stay! TDD is here to stay! – ITU, 3GPP, and IEEE 802.16:Are already evaluating and standardizing TDD-based technologies to take advantage of licensed TDD spectrum. TDD has significant benefits for cellular networks:TDD has significant benefits for cellular networks: –Additional spectral efficiency, especially for Internet and data traffic –Simpler designs –Cheaper spectrum in Asia and Europe, potentially the US –High potential for Next Generation (e.g. 3G and B3G)

11. Conclusion While the recent discussions on incorporating WLAN technology into the cdma2000 handset are a good start, 3GPP2 should get more involved with TDD- based technology standardization While the recent discussions on incorporating WLAN technology into the cdma2000 handset are a good start, 3GPP2 should get more involved with TDD- based technology standardization 3GPP2 should create a dedicated TDD TSG to study emerging TDD technologies for licensed and un- licensed spectrum 3GPP2 should create a dedicated TDD TSG to study emerging TDD technologies for licensed and un- licensed spectrum