1. Halifax, 31 Oct – 3 Nov 2011ICT Accessibility For All Wireless Charging System Seung-ok Lim TTA Document No: GSC16-PLEN-31 Source: TTA Contact: Seung-ok LIM GSC Session: PLENARY Agenda Item: 6.13

2. Halifax, 31 Oct – 3 Nov 2011ICT Accessibility For All GSC16-PLEN-31 Wireless Charging System Transfer electric power to mobile nearby devices (less than several meters) and charge batteries 2

3. Halifax, 31 Oct – 3 Nov 2011ICT Accessibility For All GSC16-PLEN-31 Technical Trends 3 WiTricity-Haire  WiTricity, a spin-off company from MIT  Power transfer to Full HD TV in CES 2010 Intel  12W power transfer to netbook in 3feet  Receiver coils in the cover of netbook  Independent standardization activity on 100W wireless power transfer Sony  Power transfer to 22 LCD TV 60W  Efficiency: about 80% @ 50cm  Charging distance increases by repeaters Qualcomm  Announcement of eZone, a wireless power transfer system, in CES2009  Maximum supportable devices: 2  Maximum charging distance: 0.2m Qualcomm-WiPower  Takeover WiPower in 2010 for developing a wireless power transfer system  Developing power transfer system in vehicles  Charging distance: 0.05m Fujitsu  Simultaneous charging to two mobile phones in Sep. 2010  Development of a simulator which is used for analysis of magnetic fields between multiple coils

4. Halifax, 31 Oct – 3 Nov 2011ICT Accessibility For All GSC16-PLEN-31 4 Highlight of Current Activities TTA PG 709 (Wireless Charging and Application) –Established in Mar. 2011 –Scope:  Standard roadmap  Power transfer interface  Control mechanism –12 members  Service & Structure  Evaluation  Interface TTA PG709 Steering Committee WG 1 WG 2 WG 3

5. Halifax, 31 Oct – 3 Nov 2011ICT Accessibility For All GSC16-PLEN-31 5 Strategic Direction Market Analysis – Strong needs −16 billion dollars expected in 2014 (Isuppli 2010) TTA’s plans −Use case & service scenario (4Q in 2011) −Standard  Wireless Charging protocol (1Q in 2012)  Wireless Charging interface (1Q in 2012)  Transfer efficiency and measurement (4Q in 2012) Collaboration −Cooperation and the sharing of information with SDOs

6. Halifax, 31 Oct – 3 Nov 2011ICT Accessibility For All GSC16-PLEN-31 Overview of Wireless Charging System Wireless Charging System –How to transfer power and charge efficiently –Devices which have a battery Wireless Power Transfer System –How to transfer power efficiently –All electric devices Difference from cable chargers –Elimination of complicated wire cables –Safety from electric shock –Increased mobility –Relatively low efficiency (about 90% efficiency of cable chargers) Considered frequency bands –20~60 kHz –80~370 kHz –6.78, 13.56 MHz 6

7. Halifax, 31 Oct – 3 Nov 2011ICT Accessibility For All GSC16-PLEN-31 7 Challenges Product Diversification –As market is increasing, each vendor makes the Wireless Charging system which has different structure & protocol –Wireless Charging is possible only between systems having the same structure & protocol Frequency Issues –Each vendor considers different frequency bands for Wireless Charging which disables interoperability between Wireless Charging systems Regulation Issues –Each nation has different regulation for EMI/EMC, SAR, etc.

8. Halifax, 31 Oct – 3 Nov 2011ICT Accessibility For All GSC16-PLEN-31 8 Next Steps / Actions Standardization Activities for product diversification –System & interface –Control & management protocol –Conformance test & certification Regulation Coordination & Compromise –Frequency band –EMI/EMC –SAR Activities toward the global harmonization –Cooperation with other SDOs –Investigation of the similar activities and directions in other organizations