2009 China Japan TDD Seminar Held in Beijing

China Japan TDD Seminar was held in Beijing on Sept.. 8, 2009. The seminar is the first of the kind since TDIA of China, XGP Forum and YRP R&D Promotion Committee of Japan exchanged memorandum of cooperation since this June. The seminar was attended by 48 delegates from Japan including those from ARIB, from operators and vendors of XGP. It was also attended by 52 delegated from China including those from China mobile and vendors. 100 delegates participated the meeting in total. On the seminar, the Japan side introduced XGP and TDD related technology, their operational situation, application themes, related products and their functions, and the cooperation with China. The China side provided information of TD-SCDMA, TD-LTE and related TDD technology, convergence of FDD/TDD, operational situation, application themes, products and their functions.

The following is a brief introduction of guest speakers and their speeches on the seminar:

Brief introduction of guest speakers and their speeches:

Mr. Sean Sugiura Secretary General of XGP Forum
The seminar is jointly sponsored by TDIA, ARIB and XGP Forum. YRP provided coordination. XGP Forum has chosen to TDD technology and has had over ten years’ experience of commercial operation before XGP was established. Very few in the world can make use of TDD as well as we do. In future, we hope to contribute to the information exchange, as well as the research and development of TDD in China. We also hope to contribute to its standardization.
Mr. Ye Lin, High Tech Section, Technology Dept., The Ministry of Industry and Information, China
There is a significant meaning behind the memorandum signed by China and Japan in regard of the technological development of TDD. We are looking forward to the boom of TDD industry, and hope that with the cooperation of involved companies, practical R&D mechanism can be established soon.
Mr. Takakazu Sedo, Promotion Officer, Radio Frequency Dept., Telecom Infrastructure Bureau, The Ministry of Internal Affairs and Communications, Japan
The ministry is engaging in the promotion of cooperation between Japan and China in regard of information technology industry now. The memorandum signed among TDIA, YRP and XGP Forum has significant meaning. We hope to realize the technical development in telecom field in both countries through the TDD technological cooperation.
Mr. Yuji Inoue, Chairperson of XGP Forum
XGP is advantageous than WiMAX in regard of technology. Despite of TDD’s minor market share, it will attract attention in future. XGP is a reliable telecom method generated from the over 10 years’ experience of PHS. By technological cooperation and joint usage of TDD technology, we hope to realize it as a highly-recognized international standard in future. XGP realized UL:DL=1:1, which attracted interest from the broadcasting industry.
Mr. Yang Hua, Secretary General of TDIA
TDD is an efficient method in regard of frequency usage. Its proportion between UL and DL is changeable during application. At the current stage, China is able to provide 179 models of TD terminals. Its test of TD-HSPA was completed too. We are considering the business version of HSPA terminal and its dual model with GSM in future. We are expecting over 100million TDD users in China in two years’ time. By joining the effort of China and Japan to promote TDD technology together, an even stronger platform for TDD future development will be built.
Mr. Masayoshi Wakao, Managing Director of ARIB
TD-SCDM, a telecom technology standardized by China is on its way of development to TD-LTE now. In the year of 2001, WCDMA and cdma2000 both started their 3G service in Japan. WiMAX and XGP service are starting this year in Japan too. Starting from China, we are positively promoting the cooperation of telecom technology to foreign countries. We hope to see the development of the cooperative relationship in regard of TDD project between Japan and China.


After courtesy addresses by the officials, delegates of some attending companies made 15 minutes’ presentation each. The following is a brief introduction of their presentations.

Ms. Liu Liping, Vice Manager of Terminal Administration Section, Data Service Department, China Mobile
TD-SCDMA is China’s self-developed technology, which was commercialized in 2008. China mobile has adopted over 90 models of TD terminals by mid-2009. We have made an R&D investment of CNY650million to improve the terminal quality. We hope Japanese terminal makers and testing device makers to join the industry in China.
Mr. Xu Zhaoji, Senior Technical Manager, Wireless Department, China Mobile Research Institute
The development of TD-LTE in China is directed by the operator from the very beginning. Besides the government support, the project has also attracted various companies on board. Joint lab was established with Integrator in May 2009. TD-LTE demonstration is schedule on Shanghai World Exposition in 2010.
Mr. Yoshioki Chika, Vice President of WILLCOM Inc.
XGP is a technology based on microcell system that has adopted OFDMA/TDMA-TDD method. XGP is designed to be the most suitable technology to drive TDD and AAS system. The result of field test in Japan showed that XGP’s DL throughput is 4 times quicker than WiMax. Its UL throughput almost doubled that of WiMax. Round trip time (RTT) is also quicker than WiMax and HSPA. We hope to make a true Wireless Broadband with the cooperation of Japan and China.
Mr. Setsuo Nakaya, Sharp Trading (China) Co. Ltd.
Sharp is interested in TD technology and it has plans to commercialize its TD terminals in near future. Sharp has kept its investment in GSM terminals last year with 10 models under production. The models are all the top 10 sellers in their own price category. Core technologies such as TFT LCD and camera lens are developed by Sharp itself.
Mr. Toshinori Iinuma, Kyocera Corp.
Kyocera is with XGP development at as early as the standardization stage. It also developed XGP base stations for WILLCOM Inc. XGP cells adopted autonomous decentralized control (ADC), which was based on dynamic channel allotment(DCA), and adaptive array antenna system(AAS) to avoid frequency interference between cells. Kyocera has by far produced and sold over half a million base stations that adopted AAS.
Mr. Li Changzu, Vice President, Huawei Technology
Huawei has 10,000 staffs at R&D department, working on the convergence of TDD and FDD. TD-SCDMA and LTE is also sharing one platform. Huawei believes that the advantages of TDD and FDD can be convergenced on the same platform. Huawei will collaborate with China Mobile to demonstrate TD-LTE on Shanghai World Exposition in 2010.
Mr. Eric Lou, Marketing Director, ZTE Corp.
With the convergence of FDD and TDD, the market scale is expanded. For example, the idea of using FDD method to cover outdoor area and TDD method to cover indoor area becomes practical. Due to the compatibility of the specifications of FDD and TDD, the foundation of convergence is prepared. ZTE is to release FDD/TDD compatible chipset in 2010. Interference between FDD and TDD can be resolved by dividing frequency and antenna.
Mr. Wang Yinmin, Vice CTO of Datang Mobile
3GPP specification was updated from Release8 to Release9, which enabled the convergence of TD-LTE and LTE-FD. The convergence concept is welcomed by the government, carriers and makers. We are promoting the compatible hardware of TD-SCDMA and TD-LTE.
Mr. Akihiro Izawa, Netindex Corp.
NetIndex developed PC card typed XGP terminals. XGP provided better performance than WiMAX and HSPA. In addition, microcell system provided bigger capacity than macro cell system.
Mr. Aviv Castro, Altair Semiconductor
Established in May 2005 in Israel, Altair is developing chipset for XGP, as well as WiMax and LTE.
Mr. Takeo Hiyama, President of ABiT Corporation
Established in 1985 in Tokyo, ABiT is providing W-SIM card that corresponds to W-OAM, PHS and XGP chipset for WILLCOM Inc.
Mr. Lei Feng, Vice President, LeadCore Technology
 (Presentation given by Mr. Aimin Zhang due to absence)
Partially invested by Datang Mobile, LeadCore was established in April 2008. It is providing Chipset in line with Media Tek.
Mr. Li Mou, Marketing Director of T3G
Invested jointly by Philips and Samsung, the company was established in 2003. It became a ST ERICSSON subsidiary in 2009. It is a provider of end-to-end solution and chipset.
Mr. Qingfeng Liao, China Chief Representative, MediaTek
3G is suggested to be defined as Green, Grace and Grassroots.
Mr. Wei Zhao, President of StarPoint
Users judge the quality of a system by the terminal quality. Therefore, terminal test and appraisal is crucial. StarPoint provides comprehensive testing device for terminals and terminal RRM testing system.
Mr. Takashi Nomata, Marketing Manager, Dairix Corporation
Established in 1994, the company is engaged in the development of protocol stack.


It is decided that a Working Group should be established in XGP Forum to promote the further exchange of technological information on the day after the seminar.
We hope more meetings of the kind to be organized in future to accelerate the development of telecom technology in China and Japan.