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第七届专家在线
  曹淑敏:信息产业部电信传输研究所副所长,高级工程师。
1992年毕业于北京航空航天大学电子工程系电磁场与微波技术专业,获硕士学位
。多年从事移动通信标准、体制和技术发展策略的研究。曾担任原邮电部
IMT-2000评估协调组组长,ITU-R TG8/1 WG5(IMT-2000无线接口技术规范)主席。
现担任ITU-R WP8F副主席,中国无线通信标准研究组(CWTS)主席,信息产业部第
三代移动通信技术试验专家组(3G TEG)组长。
享受政府特贴,获全国优秀科技工作者称号。
Cao Shumin
Vice Chairperson of ITU-R WP8F
Vice President of the Research Institute of Telecommunications Transmission (RITT), MII
Chairperson of China Wireless Telecommunication Standard Group (CWTS)
Graduated from the Electronic Engineering Department of Beijing University of Aeronautics and Astronautics in 1992, she got her master degree and jointed the Research Institute of Telecommunications Transmissions (RITT) of MPT of China. Now she is the Vice President of RITT.
She was the chairperson of China Evaluation and Coordination Group of IMT-2000 Radio Transmission Technology (ChEG) in 1997-1999, and was in charge of submitting Chinese 3G technology and evaluating other 3G technologies. She had been the chairperson of TG8/1 WG5 since 1998. Now she is the Vice-Chairperson of ITU-R WP8F, the Chairperson of CWTS and also the Chairperson of 3G Field Trial Expert Group of MII(3G TEG).
在线答疑...............................................
 

1、 Q: 曹所长,WCDMA单系统测试的具体情况如何?哪个厂家的设备比较成熟?
A: 现在刚刚开始测试,等测完之后才能回答你的问题。

2、Q:曹所长,大唐拿来的设备是不是只有基站设备?核心网是不是斯达康的?
A: 不是,将包括核心网、RAN和终端的完整系统。核心网有可能包括西门子、大唐和UT三家的设备。

3、 :大唐也拿得出"终端设备"啊?是不是大得像炸药包啊?
A:我见过,应该是说想笔记本电脑。

4、 Q:TD-SCDMA的市场有多大?
A:TD-SCDMA的市场多大,现在不太好说。坦率地讲,我想比FDD还是要小很多。当然还要取决于设备开发情况,技术成熟情况,性能价格比等。

5、 Q:LAS-CDMA与TD-SCDMA会形成竞争的局面吗?
A:T-SCDMA已经作为国际标准,国家毫无疑问将大力支持。LAS-CDMA作为一项新技术,国家也将支持其研究。但如何定位和支持正在研究。

6、 Q:政府对TD-SCDMA的支持有多大?能具体些吗?
A:信息产业部已经投入5000万以上的经费。国家计委正在考虑进一步投入。此外在道义上政府和运营商一直在支持。今后在频谱规划和许可证方面也会考虑。

7、 Q:曹所长,LAS-CDMA据说已有现场试验(在上海),而且还被媒体广泛报道过,说是中国未来移动通信的希望。有部分专家也认为其技术先进性强于TD-SCDMA,您认为它成为国家标准的希望大吗?
A:目前三部委正准备对LAS-CDMA进行全面评估,谈国家标准为时尚早。

8、 Q:曹所长,大唐,中兴,华为,您认为哪家公司对3G的研发更超前一些?
A:WCDMA我认为华为、中兴,TD-SCDMA当然是大唐,cdma2000则是中兴、华为等。

9、 Q: TD-SCDMA是否可以用于WLAN,如何与802.11竞争?
A:可以用于WLAN,但TD-SCDMA目前定位仍应是移动通信系统,或者是低速、高密度,或者是大范围覆盖。

10、Q:如果TD-SCDMA于2004年开发出全线产品,迟吗?
A:若是大规模商用,还可以。若是小规模,迟了一些。

11、Q:估计参与评估的除科技部、信息产业部、还有经贸委?考虑评估地单位越多,情 况越复杂。
A:是信产部、科技部和国家计委, 好在几个部委联合评估,观点比较容易统一。

12、Q: 所长,评估主要依据什么?
A: 理论分析、实验系统开发情况、对产业和运营影响及国内外3G大环境


13、Q: 曹女士,您认为TD-SCDMA和LAS-CDMA有可能合并吗?谢谢!
A: 作为TD-SCDMA增强型,在标准上是可能的。但两公司合作的难度估计较大。

14、Q: 在未来的通信基础分布中,除去网络运营商外,单纯开发服务的第三方是否有发展的余地?
A: 是的,有很大的发展空间,而且是发展的方向。

15、Q: 曹所长,小灵通的频谱不是说要收回吗?它会不会对TD-SCDMA有很多的影响?
A: 不会, TD-SCDMA首先可以使用高端(2010-2025MHz)的频谱,但小灵通使用的的确是3G TDD频段,长期来讲应该收回。

16、Q: 您能谈谈TD-SCDMA Trial的一些情况吗?
A: 准备2月开始测试话音和电路域业务的测试。

17、Q: Is the value chain of telecom industry be changed in the near future?
A: Is changing now!

18、Q: 曹所长,国内对后3G或4G的研究情况怎么样,信息产业部有没有这方面的支持?
A: 科技部正在启动研发计划,信产部将启动标准化工作。

19、Q: 曹所长,请问您估计3G在中国最早的商用时间是什么时候?明年,后年,还是。。。
A: cdma2000可能今年就开始,其他3G技术真正商用,估计在2004年左右。

20、Q: 现有的几大电信巨头什么时候能够成为单纯的承载提供商,什么时候才能将业务放开,让第三方来随意开发呢?
A: 信息产业部正在探讨。比如采用OSA、API之后,就比较容易做到。

21、Q: 对TSM争议较大,究竟在哪些方面?
A: 物理层使用TD-SCDMA,层2和层3采用了GSM协议,核心网完全采用GSM/GPRS协议,与3GPP协议完全不同。争议主要表现为TSM不是国际标准,用于2G网络。

22 Q: 现在大唐做得现场实验是TSM的现场实验,他的成功,您觉得对大唐TD-SCDMA有很大的帮助吗?
A: 将会有很大帮助,会验证TD-SCDMA的核心技术,实验的成功也会建立和坚定大家对TD-SCDMA的各方面的信心。

23、Q: 对于TSM的争议是不是集中在现有的GSM核心网能不能够承载384K的数据业务?
A: 不是!

24、Q: 对TSM争议是很大,但目前TSM却还一直在进行,为什么?
A: 对验证TD-SCDMA技术而言,TSM系统是非常必要的。政府和运营商对此也将全力支持。

25、Q: 2月的TD-SCDMA测试都有什么内容?
A: 2月份将首先从电路域业务开始测试。

26、Q: 可是采用 GSM,也同样可以部分使用TSM,或者两者配合使用
A: 增加GSM复杂性,对运营商宣传也不太有利,且将与GPRS形成竞争。

27、Q: 所长,TSM仅仅为验证TD-SCDMA?难道以后不用它提供服务吗?
A: 对于是否应用她提供服务,是有争议的。原因是TSM是中国独有标准,对漫游和设备成本不利,且用于GSM 2G网络。 比如有的运营商会说,TSM是2G技术。他们为什么要上一个新的2G技术? 再者TSM的推出时间与其他3G技术相近,运营商当然更有顾虑再在2G网络上增加新技术了。

28、Q: 所长,TD-SCMDA什么时候能够实现R4的商用?
A: 据说今年下半年可有试验系统。取决于设备开发的进度,最好与WCDMA商用同步。

29、Q: TD-SCDMA 和GPRS属于不同的标准(2.5与3代的区别),所以目前应用GPRS没问题,但是政府应该明确表示支持TD-SCDMA(三代),这样才能形成产业,与国外大公司抗争
A: 政府已经多次明确表示支持TD-SCDMA技术了!

30、Q: 但是需要清晰的量化,比如说中国移动市场5%的份额要给TD-SCDMA,如果只是表示,未见行动,仍然不行
A: 怎么进行量化?整个3G市场现在都难以预测,TD-SCDMA的发展又取决于很多因素。不过在许可证发放,频谱规划时是会考虑的。

31、Q: 请问我们的运营商能不能同时拿到FDD和TDD的频段?
A: 有可能,而且很可能。

32、Q: 如果能带动国外厂商一起开发TD-SCDMA产品,那么TD-SCDMA大有希望!
A: 对!TD-SCDMA作为中国自主技术,国际标准。国家和运营商肯定支持,现在很多外国公司正在考虑实质介入。只要开发出性能价格比好的成熟设备,前景一定乐观。

33、Q: 记得周寰说过TD-SCDMA也可以运用于CDMA,不知有没有这个可能?
A: TD-SCDMA已经在TDMA基础上使用了CDMA
34、Q: 请问曹所长你认为现有运营商有多大可能采用TD
A: 采用WCDMA的运营商可以考虑采用TDD作为补充,因为他们可共用一个核心网;使用额外的频谱在高密度使用或满足局部数据业务需求。

35、Q: 南方电信会不会收购联通的GSM网络而上TDD?
A: 想法很大胆。

36、Q: 信息产业部发布的二年内不会发移动牌照,您怎么想?
A:这是确切的消息吗?不一定吧?我觉得应该考虑发新的牌照。

37、 Q: 为什么不花一些时间去研究在TD-SCDMA上开发更多的能吸引用户的业务呢?曹所长,您怎样看待这个问题?
A: 业务开发对3G而言,的确非常重要。但这不是TD-SCDMA独有的,我认为T D-SCDMA当务之急仍然是尽快开发出成熟设备。

38、Q: 国际标准会出现没有人用的情况吗?
A: 需要努力。反过来在移动通信领域若不是国际标准,则成功的难度更大。 (16:59:10)

39、Q: TSM有多大的商用可能?
A:难度较大。

40、Q: 频段间干扰的问题有没有澄清?没澄清前如何处理TDD下端的频段?
A: 还没有,正在研究和准备试验期间进行测试。TDD首先会使用高端2010-2025MHz频段,低端的TDD近期影响不大,但长期来讲应该收回。

41、Q: TD-SCDMA更适合于那些种类的业务
A: 首先要实现话音业务,这是最基本的,然后非对称数据业务是它的一个特色,应尽快验证。

42、Q: 连宇公司的TD-LAS技术是否必须以某种形式与大唐合作在中国才有商用前
景?
A: 两个技术合作,是最佳结果。

43、Q: 有人说,中国是3g的试验田。您怎么看?
A: 目前中国的确拥有世界上厂家最多的试验网,但还不是商用网。但我国巨大的市场决定了必然是多厂家设备构成的网络,面临的问题比国外复杂得多。我觉得商用时,应充分考虑设备的成熟性和兼容性。

44、Q: 请问CDMA2000与WCDMA是否可以共享同一个核心网?
A: 目前的标准是不可能的。在两技术融合时,曾提出这样的愿望,但没有运营商感兴趣,也没有厂家开发设备,所以没有实现。

45、Q: TSM是2.5G还是3G,运营商商用TSM还用申请3G执照吗 ?
A: 物理层采用的是3G技术,接入2G/2.5G核心网络。由于使用新的频段,采用新的技术,当然要新的许可证。

46、Q: 所长,您认为在目前TD-SCDMA手机上做联合检测,智能天线,软件无线电可
行或现实吗?
A: 智能天线在基站上已经实现,过一段时间将进行测试。在手机上分阶段实现联
合检测和软件无线电是可能的。
47、Q: 国外厂商实际上很关心国内运营商的态度,如果有他们的明确表态,这些厂商
一定会实质加入。至于国内企业,情况就很复杂一些,本身资源有限是主要因素,我说得对吗?
A: 我同意你的观点,对国内企业而言,的确资源有限。运营商的观点与开发情况也直接相关。我也认为政府应采取更明确的态度,如单独发放TDD许可证。

48、Q: 在现场实验中没有手机,只是一个终端,意义大吗?
A: 目前阶段的实验系统主要是验证无线接口和整个系统的技术,所以使用体积大的终端没问题。WCDMA的实验系统中,也全部采用终端。等实验的第二阶段将采用接近商用的手机等。

49、Q: 能谈谈802.11对3G采用的影响的看法吗?
A: 802.11在支持无线数据业务能力方面,的确对3G够成一定的竞争,但它不具备3G随时随地移动性的优势,所以不可能替代3G。

50、Q: 你认为大唐能开发出比较成熟、可以商用的产品吗?
A: 我一直强调要和其他公司合作,形成一个群体,一个多厂家环境。

51、Q: 国家组织的对三种技术的测试,如果测试结果有优劣,那么政府是否也会对这些技术区别对待?
A: 我认为本次试验主要对他们的成熟性,包括性能、功能和不同厂家设备之间的兼容性开展测试,并不是为了区别对待不同技术。

52、Q: 目前的TSM终端和以后的TD-SCDMA手机差距很大,有些物理层参数都不同啊
A: 物理层差别不大,高层协议差别很大。

53、Q: 有人说中国移动已经说了,80%上UMTS,您的观点呢?
A:UMTS是欧洲的叫法,这个概念已经包括了WCDMA和CDMA TDD。从目前世界范围内运营商声称采用的技术看,WCDMA占据的份额的确很大,但3G的最终市场取决于几种技术进入市场的时机。对于GSM的运营商来讲,肯定会采用WCDMA,CDMA运营商和新的运营商则不一定。

54、Q: 不可能完全替代3G,但在多大程度上影响3G市场?
A: 我认为802.11本身的应用难度也很大。若3G成熟商用时,802.11覆盖有限,那么影响就很小。

55、Q: TSM/TD-SCDMA双模手机才能解决TSM过渡的问题,因为它们的物理层参数的确有些不同。
A:物理层应该差异不大,但高层协议完全不同,二者难以兼容。

56、Q:是否能够避开高通专利费的方法发展3G?
A;看起来有一定难度,几乎所有CDMA技术都与高通专利有关。

57、Q: TD-SCDMA中有高通的专利吗?
A:高通认为有,大唐认为没有。

58、Q: 据说TD-SCDMA系统的演示基本上是黑箱操作,以此通过了验收。不只是真是假?
A:信息产业部的测试会证明一切。

59、Q: 请问CWTS是否计划将HSDPA列入明年的工作计划呢?
A:应该是今年吧,我认为会的。

60、Q: 现在WP8F搞Beyond 3G,中国有计划提方案吗?我们有意take leadership? 日韩在合作,我们有意参加吗?
A: 科技部已经启动了后3G的研发计划,目标就是提交中国的候选技术。我本人是WP8F的副主席兼RTECH工作组主席,负责后3G技术的提交、评估和标准形成,希望我国能提交好的技术,成为后3G的标准。希望我们起的作用远远大于3G。

61、 Q: 曹所长,现在WP8F搞Beyond 3G,我们有计划提方案吗?我们有意take leadership? 日韩在合作,我们有意参加吗?
A:国际大公司都有意与我们合作。我认为不只是日韩,在后3G标准时,格局将再次变化。

62、Q: 请问目前在RITT进行的3G测试中,TD-SCDMA 是否也在其中?
A: 是的,将从2月份开始测试。

63、Q: CWTS对1XEV开展研究吗?
A: 1XEV我本人的意见,也应该进行标准研究。

674、Q: 你对TDSCDMA有多大的信心?
A:有信心。但现在参与开发的厂家还是较少,还没有形成一个群体,应尽快改善这一局面。

65、Q: 您认为联通在1x方面会有多大动作呢?
A: 会在条件成熟时大规模商用。

66、Q:对TD-SCDMA的信心多大?
A: 我是TD-SCDMA诞生和标准化的参与和见证者,我有信心TD-SCDMA在中国取得成功。其含义就是占据一席之地,获得一定规模的应用。我本人会尽最大努力。

67、Q: 您认为3G的主要业务将是什么?
A: 是一个渐进的过程,首先是话音、MMS、100k左右数据,再到实时图象等。应用是关键,我认为影响移动数据应用的模式还没有形成。

68、Q: 您怎么看CWTS将来可能的角色转变?
A:很想听听你的意见。CWTS是一个标准化组织,与国际标准化组织比,有很多需要完善和规范的地方。

69、Q: 可不可能像3GPP那样,加强技术实力强的外国公司的作用?
A:当然可以,我们一直在努力发挥国内外有实力的企业的作用。

70、Q: CWTS的4月全会是不是将制订02年的计划呢?
A:会的。希望多提意见和建议。

71、Q: 更想知道所长对TDSCDMA在市场的成功有对大信心?所长认为市场规模有多大?比如在2005有多少手机?
A: 很有信心!具体数据我暂时无法给你,整个3G的市场都没有明朗。

72、Q: MII会发放第三个移动LICENCE吗,什么时间
A: 会的。什么时间不太好说。也许中国电信上市是个机会。

73、Q:应该允许CWTS的观察员在3GPPs提交文稿
A: 希望在大的标准化协会成立时,观察员成为成员!我会努力,目前有困难。

74、Q: 您觉得TD-SCDMA的市场知多少,有人说超过2000亿人民币?
A:抱歉,我无法回答。

75、Q: 在将来的市场里,倾向于TD-SCDMA的政府行为能有多少?
A:有,但只靠政府行为是不可能的。

76、Q: TD-SCDMA 手机可以和GSM兼容(TSM),也可以和WCDM兼容,目前在向那个方向努力?
A:首先和GSM兼容,我直GSM/TD-SCDMA双模手机,不是TSM。因为毕竟GSM的覆盖范围已经很大,可以很容易实现漫游。

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1、 Q: Ms Cao, how about the process of the test of single WCDMA system? Which manufacturer's equipment is more mature?
A: At the present, the test is at the initiate stage. I could not answer your question until the test is finished.

2.Q: Does Datang's equipment only contain Base Station and is the core network belonging to UT Starcom?
A: No, the systems include core network, RAN and terminal. The core network maybe contains equipments from Siemens, Datang and UT Starcom.

3、 Q: Can Datang provide terminals? Does it look like a thick brick?
A: I have seen the terminal. In fact, it looks like a mobile computer.

4、 Q: What's the capacity of TD-SCDMA market?
A: I am not sure how big the TD-SCDMA market. Frankly speaking, it is much smaller than that of FDD. However, the market capacity also depends on the development of equipments, the advancement of technologies and the price.

5、 Q: Will LAS-CDMA and TD-SCDMA form a competitive pattern?
A: As an international standard, TD-SCDMA will obtain great support from the state. It is no doubt. As a new technology, LAS-CDMA also can get support from our government. But the positioning of LAS-CDMA and the supporting methods are still in problems.

6、 Q: How will the government support TD-SCDMA? Would you please specify some things?
A: MII has invested more than RMB 50 million on TD-SCDMA and the State Planning Commission also considers investing more on it. Besides, the government and operators give great support to it. In the future, TD-SCDMA will be taken into consideration in spectrum planning and license authorizing.

7、 Q: Ms. Cao, it is said that LAS-CDMA has made field trials in Shanghai that had been wildly reported by media. It was said that LAS-CDMA is the hope of China's wireless communication. Besides, some experts also thought that LAS-CDMA is more advanced than TD-SCDMA in technologies. Do you think it will become a state standard?
A: At the present, three state ministries and commissions are preparing to evaluate LAS-CDMA thoroughly. It is too early to talk about the state standard.

8、 Q: Ms. Cao, which company holds a leading position in the R&D of 3G, Datang, Zhongxing, or Huawei?
A: From my point of view, Huawei and Zhongxing do better in WCDMA, Datang is theleading company in TD-SCDMA and in CDMA2000, Zhongxing and Huawei are leaders.

9、 Q: Can TD-SCDMA be applied into WLAN? How can it compete with 802.11?
A: Yes, TD-SCDMA can be applied into WLAN. But at the present, it is still aimed to mobile communications of low speed and high density or large area coverage.

10、Q: Do you think it is late that the whole line products of TD-SCDMA are developed in 2004?
A: If it is for a large-scale commercialization, it is not late. However, if it is for a small-scale application, it will be too late.

11、Q: It is estimated that in addition to MOS and MII, the State Economy and Trade Commission also will attend the evaluation. But more units involved, more complex the situation.
A: They are MOS, MII and the State Planning Commission. The main advantage of united evaluation is it is easy to reach consensus.

12、Q: Ms. Cao, what will be taken into consideration when making evaluation?
A: The elements involved in evaluation are theoretical analysis, the development of the system to be tested, the impacts on industries and operation and the general 3G environments of abroad and domestic.

13、Q: Ms. Cao, is there any possibility that TD-SCDMA and LAS-CDMA will be integrated?
A: As a enhanced TD-SCDMA, it is possible that LAS-CDMA will be integrated with TD-SCDMA in the standard level. However, it is difficult for these two companies to cooperate.

14、Q: In the future development of communications, is there any room for the third party just focused on service development?
A: Yes, there will be a large room for these parties and it is the main industrial trend.

15、Q: Ms. Cao, is it said that the spectrum of Xiaolingtong would be taken back? Will it exert great impacts on TD-SCDMA?
A: It will not influence TD-SCDMA because TD-SCDMA can first utilize the spectrum of 2010-2025MHz. However, Xiaolingtong does use the 3G TDD spectrum which should be taken back in a long run.

16、Q: Would you please talk about something about TD-SCDMA Trial?
A: It is planned to test the voice and circuit domain service in February.

17、Q: Is the value chain of telecom industry be changed in the near future?
A: It is changing now!

18、Q: Ms. Cao, what's about the domestic R&D of post 3G and 4G? Is there any support from MII?
A: MOS is initializing the R&D plan and MII will start the standardization work.

19、Q: Ms. Cao, when will 3G be commercialized in China?
A: cdma2000 may be commercialized in this year. As for other 3G technologies, I think the true commercialization will be made around 2004.

20、Q: When will the current operators function as carriers only? When will the business be opened for the third party to develop freely?
A: MII is considering such kind of issue. Should OSA and API adopted, it would be much easier to achieve it.

21、Q: There are many disputes on TSM, what do these disputes on?
A: TD-SCDMA is used in the physical layer, while Layer 2 and Layer 3 adopt GSM protocol. The CN adopts GSM/GPRS protocol, which is totally different from 3GPP. The disputes are mainly over that TSM is not an international standard and it is applied for 2G network.

22 Q: Now, the field trial carried by Datang is TSM field trial. Do you think the success will help the development of TD-SCDMA?
A: Yes, it will help a lot. The trial will validate the core technology of TD-SCDMA and the success of the trial will help to establish and maintain the confidence on TD-SCDMA.

23、Q: Is the dispute over TSM focused on that the current GSM CN cannot carry 384K data services?
A: No, it isn't.

24、Q: Despite of disputes over TSM, TSM is still in process. Why?
A: It is necessary for TSM to validate TD-SCDMA technology, so the government and operators give great support to it.

25、Q: What will be tested in the February TD-SCDMA trial?
A: The trial will begin from the test of circuit domain.

26、Q: Should we adopt GSM, TSM also can be utilized partly or it can work in GSM.
A: It will add the complexity of GSM and do harm to the promotion of operators. Besides, it will compete with GPRS.

27、Q: Ms. Cao, is TSM just for validating TD-SCDMA? Is it possible to employ it to provide services in the future?
A: There are disputes over whether we should employ it or not, because TSM is a Chinese standard applied for 2G network and it is not beneficial for roaming and controlling equipment costs. For example, some operator will say TSM is a 2G technology and why they should adopt a new 2G technology. In addition, the time of TSM advancement conflicts with that of 3G technologies, so it is not strange why operators have worries on adding new technologies to 2G network.

28、Q: Ms. Cao, when will TD-SCDMA be commercialized in R4?
A: It is said that there will be trial system in the second half year in 2002. But it is depended on the process of equipment development. It is better to synchronize with the commercialization of WCDMA.

29、Q: TD-SCDMA and GPRS belong to different standard, so there is no problem to adopt GPRS nowadays. However, the government should support TD-SCDMA explicitly. By this, the industry can be formed and we can compete with foreign giants.
A: Our government has said several times that it supports TD-SCDMA definitely.

30、Q: But it should be specified. For example, 5% of China's mobile communications market should be assigned to TD-SCDMA. If the government just shows support but without concrete actions, it will not work.
A: How to specify? Now, it is difficult to estimate the 3G market and the development of TD-SCDMA depends on various elements. However, the government will take TD-SCDMA into consideration in issuing licenses and planning spectrum.

31、Q: Can operators obtain FDD and TDD spectrums concurrently?
A: It is likely and it is possible.

32、Q: If foreign companies also participate the development of TD-SCDMA products, TD-SCDMA will have a bright future.
A: Right. As a Chinese technology and an international standard, TD-SCDMA will get definite supports from government and operators. Many foreign companies are considering entering this field. If mature equipment at a reasonable price developed, the prospect will be bright.

33、Q: I remember that Mr. Zhouhuan said that TD-SCDMA also can be applied to CDMA, is it possible?
A: TD-SCDMA has already adopted CDMA on the basis of TDMA.

34、Q: Ms. Cao, from your point of view, how big is the possibility that the current operators will adopt TD-SCDMA?
A: Those operators adopting WCDMA can adopt TDD as a supplementation because they employ a same CN and the extra spectrum can be used for high density applications or satisfying the data services demands.

35、Q: Will the South Telecom purchase the GSM network of Unicomm to adopt TDD?
A: It's a bold idea.

36、Q: MII will not issue new mobile licenses in two years, what's your opinion?
A: Is it confirmed? I don't think so. In my opinion, new licenses shall be issued.

37、 Q: Why should we spend more time on developing services that will attract more subscribers? What are your comments on this question?
A: For 3G, the service development is very important indeed. However, it is not just a problem for TD-SCDMA. The urgent affairs for TD-SCDMA at the present are still to develop mature equipment as soon as possible.

38、Q: Is there such a situation that an international standard is not adopted by anyone?
A: It needs our work. On the contrary, if it is not an international standard in mobile communications, it will be more difficult to success.

39、Q: Is there any chance for TSM to be commercialized?
A: It is very difficult.

40、Q: Is the problem of frequency intervention solved? If not, how is the TDD frequency dealt with?
A: No, it is not solved yet. We are doing researches and preparing to test it in the trial. TDD will first use the frequencies of 2010-2025MHz. The low frequencies have little influence on TDD, but it should be taken back in future.

41、Q: What kinds of services is TD-SCDMA best suited for?
A: First, it should have voice service and it is the basis. Besides, the non-symmetrical service is one advantage of TD-SCDMA that should be validated as soon as possible.

42、Q: Is the commercialization of TD-LAS in China based on the cooperation with Datang?
A: It will be the best result if these two can cooperate.

43、Q: It is said that China is the trial field for 3G, what's your opinion?
A: At the present, China does have the largest number of trial networks, but they are not commercialized. Our great market determines that the network must be composed by equipments of many manufacturers and challenges we are facing are more than that of foreign markets. From my point of view, the compatibility and maturation of equipments must be considered.

44、Q: Can CDMA2000 share CN with WCDMA?
A: It is impossible according to the present standards. When these two technologies were integrated, such kind of hope was raised. But no operator was interested in and no company developed equipment. So it was not fulfilled.

45、Q: Does TSM belong to 2.5G or 3G? Do operators need to apply for 3G licenses when employing TSM?
A: TSM employs 3G technologies at physical layer for access to 2G/2.5G CN. Since it uses new frequencies and new technologies, it certainly needs new license.

46、Q: Ms. Cao, do you think it possible to apply JD, SA and SDR for TD-SCDMA handsets?
A: SA has been applied for base stations and it will be tested in the future. To fulfill JD and SDR in handsets is possible with stage work.

47、Q: In fact, foreign companies are very interested in the attitude of domestic operators. If they show their attitudes explicitly, those companies will join in. As for domestic companies, it is more complex due to limited resources. Am I right?
A: I agree with you. For domestic enterprises, their resources are limited. The attitudes of operators also influence the development. I think the government had better take more confirmed actions, for example, issuing TDD licenses.

48、Q: In the field trial, there is no handset, but terminals. Is it significant?
A: At the present, the trial system is used to test the radio interface and the technology of the whole system, so there is no problem to use big terminals. WCDMA trial systems also employ terminals. In the second stage of trial, the handsets near to the commercialized will be employed.

49、Q: Would you please to talk about the influences on 3G exerted by 802.11?
A: 802.11 can compete with 3G in supporting wireless data services. However, it cannot move as freely as 3G, so it will not replace 3G.

50、Q: Do you think Datang can develop mature products for commercialized applications?
A: I always emphasize the cooperation with other companies. We should form a team and establish a multi-companies environment.

51、Q: If the test results of one technology are better than that of other two among these three technologies tested by the state, will the government treat these technologies differently?
A: I think the purpose is to test the technological maturation, including performances, functions and compatibilities, not to treat these technologies differently.

52、Q: The current TSM terminals are different from the future TD-SCDMA handsets. Even some physical layer parameters are different.
A: The physical layers have few differences, but the high layer protocols have many differences.

53、Q: It is said that CMCC would employ UMTS with 80% possibilities, what do you thinkabout it?
A:UMTS is European standard that includes WCDMA and CDMA TDD。At the present, WCDMA is the main technology will be employed by operators around the world. However, the 3G market depends on the time that various 3G technologies enter the market. For GSM operators, they will employ WCDMA. But CDMA and new operators will not certainly employ WCDMA.

54、Q: If 802.11 cannot replace 3G, how big are the influences it exerted on 3G market?
A: In my opinion, the application of 802.11 has a lot of difficulties. If 3G is commercialized but 802.11 has limited coverage, the influences will be small.

55、Q: The TSM/TD-SCDMA dual-mode handset can solve the TSM transition problems, because the physical layer parameters are indeed different.
A: You are right.

56、Q: Is it possible to develop 3G without paying patent premium to Qualcom?
A;It seems difficult. Almost all CDMA technologies are related with Qualcom's patent.

57、Q: Is there Qualcom's patent in TD-SCDMA?
A: Qualcom thinks there is, but Datang does not think so.

58、Q: It is said that TD-SCDMA system demonstration basically is made secretly. Is it true that it has passed the test?
A: The MII test will prove it.

59、Q: Will CWTS take HSDPA into next year's working plan?
A: I think it is possible.

60 Q: Now WP8F is making beyond 3G, if China plans to submit the project? If we are willing to take leadership? Japan and Korea are cooperating, shall we join?
A: Multinational corporations are willing to cooperate with us. I think not only Japan and Korea, in period of beyond 3G standards, structure will change again. We expect on playing a more important role than in 3G period.

61、Q: At the present 3G test made by RITT, is there TD-SCDMA ?
A: Yes, the test will begin in February.

62、Q: Does CWTS study 1XEV?
A: From my point of view, we also should conduct 1XEV standard research.

63、Q: Are you confident with TD-SCDMA?
A: Yes, I'm confident. But at the present, companies involved in R&D are limited and we still do not establish a team.

64、Q: What kinds of actions do you think Unicom will take to CDMA1X?
A: It will commercialize CDMA1X when conditions are ready.

66、Q: What's your confidence on TD-SCDMA?
A: I participated and witnessed the naissance and standardization of TD-SCDMA. I am confident that TD-SCDMA will succeed in China. To be specifically, it will be commercialized and employed in a certain scale. I will try best for this purpose.

67、Q: What are the main services of 3G?
A: 3G is a process. Voice service will be the first, then MMS, 100k data service and then live videos. The key is application. I think the pattern influencing mobile data applications is still come into being.

68、Q: What do you think the role shift of CWTS in future?
A: I need your advice. As a standardization organization, CWTS has some distance with international standardization organizations and it needs to be promoted and enhanced.

69、Q: Is it possible that it strengthen the role of foreign companies with strong technological power?
A:Sure. We are always try to bring the strong enterprises' functions into play.

70、Q: Will CWTS make 2002 working plan in April?
A: Yes. We hope you can give us good suggestions.

71、Q: What do you think the market capacity of TD-SCDMA? For example, how many handsets in 2005?
A: I am very confident with TD-SCDMA, but I could not give you a concrete number, because the whole 3G market is still in ambiguity.

72、Q: If MII will release third mobile license, When?
A: Yes. But time is not determined. Maybe public listed on stock market of China Telecom is a chance.

73、Q: It should allow CWTS observers to submit documentary in 3GPP.
A: I hope observers can become members when a bigger standardization organization is formed. I will try my best, but it is difficult at the present.

74、Q: What do you think the market volume of TD-SCDMA? Some one says it will surpass RMB 200 billion.
A: I'm sorry, but I cannot answer this question.

75、Q: In the future market, how many favorable actions will the government take for TD-SCDMA?
A: There will be some, but it is impossible to just depend on the government.

76、Q: TD-SCDMA handsets can be compatible with GSM (TSM) handsets and WCDMA handsets, what direction are we working for at the present?
A: Firstly, it will be compatible with GSM. I am always favor GSM/TD-SCDMA dual-mode handset, not TSM/TD-SCDMA. After all, GSM has covered a large area and it is easier to roam.

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