TD-HSDPA IN CHINA

1. TD-HSDPA IN CHINA DTmobile COMMUNICATIONSEQUIPMENTS CO. LTD April, 2006

2. CONTENTS DTmobile Overview； TD-HSDPA Complete Solutions and Products； DTmobile TD-HSDPA Milestones; TD-HSDPA in China

3. Overview of DTmobile ● About DTmobile TD-SCDMA system equipment supplier TD-SCDMA total solution provider TD-SCDMA international standard pioneer Network establishment service provider TD-SCDMA test handset provider TD-SCDMA terminals solutions provider Taking advantage of its excellent innovation and long-term accumulation, DTmobile is dedicated to the research and development of TD-SCDMA. On the basis of its self-owned core intellectual property right and complete series of products, DTmobile is committed to providing total solutions to customers wherever they are.

4. TD-SCDMA Milestones In China 8 Year Development Path（1998~2006） Market Application Phase Products network tests were completed in H1 05, and all will be ready for market in 2006. The research of technology migration path has already started. Kicked off with the establishment of DTmobile on Feb. 2002. The process lasted until the end of 2004. Product Development Phase Technology Testification Phase Two phases of MTNet tests, including indoor and field tests, were completed from 1999 to 2002. Standard Development Phase TD-SCDMA standard was proposed in July 1998 and accepted by ITU and 3GPP respectively by the end of 2001. China Academy of Telecommunications and Technology (CATT) submitted TD-SCDMA proposal to the ITU on behalf of the Chinese government in June 1998. DTmobile, as the sub company of CATT, is involved in TD-SCDMA R&D, industrialization and commercialization in China and throughout the world.

5. TD-SCDMA Industry Chain DT Mobile: Key force of the TD value chain T3G, Commit, Jiazai CN providers Chipset makers Investment Joint lab Technology DTmobile Manufacturing Total Solutions Operators, etc. Alcatel Solutions Technology Joint R&D RAN manufacturers UE and chipset makers TD-SCDMA testing instrument suppliers

6. Industry Accomplishment Tests & Trials Industrialization Special Test 1H, 2005 Pre-commercial Trial ongoing MTNet Tests 2002-2004 To verify the basic functions To evaluate the overall performance of the network Large scale, with full coverage and real users; expected to be the last step before commercial rollout

7. CONTENTS DTmobile Overview； TD-HSDPA Complete Solutions and Products； DTmobile TD-HSDPA Milestones; TD-HSDPA in China

8. Why to Choose TD-HSDPA? • Optimally enhance the performance of TD-SCDMA system • Maximally guarantee backward compatibility and the scalability of system • Provide flexibility to guarantee the most efficient use of resources • ONLY need software upgrade to smoothly migrate from TD-SCDMA R4 to TD-HSDPA • The peak rate of TD-HSDPA may reach N* 2.8Mbps (N=number of carriers) when UL/DL timeslot ratio is 1:5. The peak rate 16.8Mbps, already higher than the 14.4Mbps of WCDMA-based HSDPA, can be reached on 10MHz bandwidth. • As to WCDMA based HSDPA, if on 10 MHz, requires continuous 5MHz timeslots on UL and DL respectively, while TD-HSDPA may take use of 6 separated carriers (1.28MHz each). Considering the limited frequency resource, this is an obvious advantage of TD-SCDMA over WCDMA. • Regarding the deployment of both R4 and HSDPA networks, the narrow bandwidth based TD-HSDPA has many advantages on the efficiency of resource allocation and the simplicity and flexibility of configuration over WCDMA HSDPA.

9. What is HSUPA? • The targets are, • to greatly enhance UL transmission bit rate • to better support interactive, background and streaming services • to reduce time latency on interaction • Key technologies adopted for enhanced UL performance include: • Adaptive modulation and coding (AMC), • Hybrid ARQ, • NB control and scheduling, • Fast allocation of dedicated/shared resource, and • The relevant support mechanism of physical-layer and high-layer signaling

10. TD-SCDMA Total Solution

11. TD-SCDMA RAN Products Micro NB Indoor Macro NB Outdoor Macro NB RNC

12. DTmobile UE Equipment 6 4 5 2 3 1\ Test UE Hummer V1 2\ Test UE Sparrow V1 3\ Commercial PC card Hummer V2 4\ Pecker V1, provided to system suppliers and operators for test use 5\ Low-end commercial handset Swallow V1 6\ High-end commercial handset Culver V1 1 TD-SCDMA HANDSET

13. Network O&M iNOMS (Intelligent Network Operation & Maintenance Solution) NETWORK OPTIMIZING TOOL ROAD TEST TOOL NETWORK PLANNING TOOL

14. CONTENTS DTmobile Overview； TD-HSDPA Complete Solutions and Products； DTmobile TD-HSDPA Milestones; TD-HSDPA in China

15. TD-SCDMA HSDPA&LTE Roadmap DTmobile TD-HSDPA Roadmap TD-SCDMA LTE TD-SCDMA Multi-carrier HSDPA TD-HSDPA Singe Carrier TD-HSDPA Singe Carrier Demo Release Release 2005/4Q 2006/1Q 2006/3Q

16. CONTENTS DTmobile Overview； TD-HSDPA Complete Solutions and Products； DTmobile TD-HSDPA Milestones; TD-HSDPA in China

17. DTmobile Support Boosts TD-HSDPA TD-SCDMA HSDPA TD-SCDMA HSDPA - Theoretical peak rate of 2.8 Mbps on 1.6MHz bandwidth (DL 5 timeslots) Singe carrier HSDPA Muti-carrier HSDPA - TD-SCDMA multi-carrier technology is featured by the flexible configuration of resources, the backward compatibility with the current TD-SCDMA network, and the solution to effectively meet the requirement on large-capacity and high-speed data transmission. TD-SCDMA LTE TD-SCDMA LTE TD-SCDMA LTE Two proposals submitted by DTmobile to 3GPP for evaluation • TD-SCDMA multi-carrier solution, as a short-term goal, emphasizes smooth migration and provides enhanced TD-SCDMA system performance. • TDD-OFDM solution is a long term TD-SCDMA evolution plan which aims at a total performance enhancement.

18. First Demo of TD-HSDPA Service To experience TD-HSDPA... TD-HSDPA Live Demo on Oct. 10, 2005 OLD TIMES… HSDPA PERFECT EXPERIENCE In DTmobile Office

19. P.T. Wireless and Networks Comm. China 2005 TD-HSDPA Live Demo

20. P.T. Wireless and Networks Comm. China 2005 TD-HSDPA Live Demo

21. THANK YOU!