Ms.Wang zhiqin，the deputy director of Institute of Communication Standards Research, China Academy of Telecommunication Research of MII, and the vice-chairman of CCSA, and take the responsibility of the GSM/GPRS system and UMTS core network standard.
　　As famous expert and leader of science research in China mobile telecom field, Ms.Wang zhiqin has great experience and practices in the depth research of GSM, GPRS and UMTS. Furthermore, She has been in charge of the decision-making in the projects of the mobile telecom industry and enterprise standard. In the 3G mobile telecom filed, She is one of member of the core working team of 3G technology assessment group and 3G technology trial expert group, the leader of WCDMA & TD-SCDMA trial group. Ms.Wang has awarded many government prizes.
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The 10th TD-SCDMA FORUM Expert Online
Main Topic: Round 2 of 3G Field Tests

1） Q: The field test will end in this September, can the TDD equipment catch up the test? Will the TD-SCDMA test continue after September？
A:I think TD-SCDMA test can finish one phase test in September, form the national perspective china should support the TD-SCDMA test continually.

2） Q: What is the emphases of this TD-SCDMA field test? Whether it includes the handoff with WCDM A or CDMA 2000?
A: The test emphases are to test the TD-SCDMA radio network performance, the radio interference basic function & performance of equipment and high-level service applications, the TD-SCDMA test doesn’t include the handoff with CDMA 2000 but the handoff with WCDMA is optional. The LCR test will begin in this May in Beijing and Shanghai, chengdu and chongqing will retain the system.

3） Q: Has china confirmed the development route of TDD is not TSM but LCR?
A:I think TSM is a good mode from technical perspective but it is hard to be accepted as 3G product, we can explore its broad applications in other wireless area.

4） Q: How is commercial use of smart antenna at present?
A: We have finished the demo test of TD smart antenna in Mtnet, its melioration test to the whole network performance will be tested in this field test.

5） Q: When will the engineering design of TD-SCDMA finish?
A: The integrated TD-SCDMA test will begin in May, the engineering design should finish by the end of April.

6） Q:Will the government allocate multi carriers to operators at the beginning of the issuance of 3G licenses?
A: Take WCDMA for example, the spectrum above 15Mhz can support the development of services. In the long run, it is reasonable to give operators multi carriers, and the government should consider adding the number of multi carriers according to their spectrum efficiency.

7） Q: What is the transmission rate of TSM or LCR at present? How many number in each sector?
A: The transmission rate set by 3G TEG test is from 64Kbps to 384 Kbps at present, the network capacity will be validated in the field test.

8） Q:When will the TDD( LCR) Uu interface test specification be discussed in CWTS?
A: Some part of test specification have been discussed in CWTS and presented to 3GPP by group .

9） Q: Does this TD-SCDMA field test include Iu interface test or Iub interface test? Will MII carry on the Iub interface interoperation test in the near future?
A: we have arranged the TD-SCDMA Iub interface test in Mtnet, because Iu interface is similar with that of WCDMA, we will test it when the TD RAN access to R99 CN.

10） Q: Has any changes to this TD-SCDMA field test?
A: The TD-SCDMA field test will begin at the end of this May, and its network design is getting along now.

11） Q: Can you introduce the detail of MTNet test and how is the TD-SCDMA test system and terminal?
A: Datang, Siemens, Huawei, ZTE and Putian can provide TD-SCDMA system equipment, Nortel can provide core network. Besides Datang, the list of TD-SCDMA terminal vendors has not confirmed , but TD sample terminal and few terminal can be launched in the second half of 2004.

12） Q: Can MII efficiently arrange the field test? Is the field test in three cities and include all operators at the same time?
A: We have taken effective measures to guarantee the implementation of field test. All operators will begin the field test in three cities at the same time, the detailed plan can be modified according to the vendors’s situation.

13）Q: In the coming field trial, which kind of the system will be tested, TSM, LCR or both?
A: Because TSM test has finished in MTnet phase , the field test will focus on LCR, the TSM system in chongqin and chengdu will remain, so the TSM radio performance test can not excluded.

14) Q: Why not the TDD test use R4 core network but R99 core network?
A: We allow R4 and R99 core network, there is two bits difference for them in supporting TD services, but the effect of two bits to system is still to be validated.

15）When will all the TD test standard in MTnet be finished ？
A: About this April.

16）Q: I don’t think WCDMA run well today, why? Does MII evaluate the maturity of WCDMA?
A: At present, WCDMA services have increased rapidly in Europe and Japan, there will be large scale commercial launch of WCDMA in 2005.

17）Q: How to join in the R&D of TD-SCDMA as handset designing unit?
A:I advise such vendors can join in the activities of TDIA and CWTS.

18）Q: Will china issue the TD licenses while considering the lessons of Japanese PDC?
A: I think TD will have its position in 3G market, which is different from Japanese PDC.

19）Q: Which vendors will provide the R4 CN? Can you evaluate the maturity of R4 equipment?
A: Huawei and ZTE provide the R4 edition, we will test the WCDMA R4 equipment in this July, but I don’t think it is mature time, especially in launching the network.

20）Q: There is two bits difference in Iu interface between R4 and R99 core network, do all LCR RAN vendors have to support two edition CN?
A: The two bits difference is not in Iu interface but in the radio interface layer3. There are nuance between R4 and R99 core network, we will validate the effect to CN when LCR RAN access to CN.

21）Q: Almost R4 equipment are provided by domestic vendors, so do you think domestic vendors keep ahead somewhat?
A: We haven’t tested so we can reach a conclusion.

22）Q: How do you think 3G equipment from Chinese vendors can not be validated in china but in other countries, like Huawei case?
A: China will consider the integrated harmonious development from operators and vendors and the contribution of 3G to the national economy.

23）Q: Will LCR be tested in May and TSM in March? how many cities will carry on TD test? Will LCR be updated from TSM by then?
A: LCR will be tested in May but we are not sure whether LCR system be updated from TSM directly? Because the TD tests in chengdu and chongqing are organized by operators, but we haven’t gotten details, we hope to make comprehensive test to TD.

24）Q: What is your evaluation to the R&D status of TDD chip?
A: There is TDD chip finished the designing and will be produced in the second half of 2004.

25）Q: Will the TD sample terminal and few terminal be TSM or LCR?
A: TSM has mature sample terminal now, the TD sample terminal and few terminal in the second half of 2004 will be LCR.

26）Q: China Mobile, China telecom and CNC prefer WCDMA, while China Unicom prefer cdma2000, so it is not well for TD?
A: China Mobile will choose the UMTS, China Unicom choose cdma2000, but China Unicom will consider the WCDMA, so the time for TD is rather limited.

27）Q:I think the 3G rapid rise in the world recently due to the breakthrough of terminal?
A:I think it due to the market and services tactics including the amelioration of terminal performance.

28）Q: Do you think it is the critical point in the 3G development now?
A: There are 40 WCDMA networks to be launched in 2004, I think this critical point may be the second half of 2004.

29）Q: Will the MTnet test result be published in detail?
A: We have published some main test results, but the detail results will not be published.

30）Q:What is the meaning of MTnet field test ?
A: MTnet field test and IOT test can provide favorable condition for testing the maturity of 3G products and provide operation experience for operators.

31）Q: Will the LCR industry standard be finished in this July?
A:I think maybe in this August.

32）Q: How we can attract more overseas enterprises to join the TDD R&D from industry policy?
A: We hope more overseas enterprises to join the TDD R&D by this MTnet field test.

33）Q: Which kind of system Huawei use in this TDD field test, TSM or LCR?
A:I think Huawei will use LCR later, but we can’t confirm whether it is updated from TSM directly.

34）Q: Will LCR be tested in TD field test and lab in May at the same time? Does TSM need lab test? Does LCR has test terminal or when will LCR test terminal come?
A: Yes, LCR will be tested in TD field test and lab in May, and TSM doesn’t need lab test. There is one LCR test terminal, the test terminal similar to handset will be provided in June.

35）Q: It takes Japan 3 years to put WCDMA into large scale commercial use, what is your opinion to the large scale commercial use of TDD terminal in 2005?
A: In my opinion, it is possible that the large scale commercial manufacture of TDD terminal in 2006.

36）Q: How many vendors can provide TSM test handset besides Datang? Will Huawei, ZTE or Putian develop TSM or LCR handset?
A: Huawei, ZTE and Putian have no plan to develop the TD handset. Commit, T3G, Spreadtrum, RTX, Holley, and CQUPT are developing the TD chip. Lenovo, LG, SAMSUNG，Bird，Amonisonic and Hisense are developing the TD terminal.

37）Q: Almost of 3G licenses in the world have TDD spectrum, some small operators are likely use TDD technology to make the best use of spectrum, what is your opinion?
A: Because there is no experience in deploying large scale TDD network yet, operators maybe consider the risk matter.

38）Q: You mentioned that TD field test will finish one phase and continue to be tested after this September, right?
A: In my opinion, Chinese government should give TD more time and opportunities.

39）Q: Do you think the result of field test has direct relationship with the issuance of 3G licenses? I heard some TDD spectrum in Europe have been occupied by other 3G tech, will this influence the application in these countries?
A: I think the result of field test has some kind of relationship with the issuance of 3G licenses. The frequency requirement for TDD tech is very flexible, if there are mature TDD product, the change of spectrum will not influence its overseas applications.

40）Q: Can TD-CDMA be accepted as the third TDD standard?
A:I don’t think it can be accepted from the time view, its market orientation and applications are different from that of TD-SCDMA.

41）Q: How to guarantee the maturity of LCR? One resolution of WCDMA may have over 10 companies cross licensing, How is TDD?
A: With the perfection of TD industry chain, more and more vendors have joined the R&D of TD standard. Many of them have joined the TD terminal interoperation test specification and will summit to 3GPP.

42）Q: Are there any supplement or explain to the report of Mtnet test?
A: Not yet, because the field tests of WCDMA and CDMA2000 haven’t begin.

43）Q: Which kind of voice coder & encoder does TDD use? AMR or others?
A: AMR voice coder & encoder.

44）Q: It will take one month for each 3G standard to finish the field test, right?
A: No, the timetable for each 3G standard field test is as fellows: WCDMA, from March to September; CDMA 2000 begin from April and TD-SCDMA from May.

45）Q: What are your opinion to the improvement of WCDMA test system and terminal?
A: From the Mtnet result, WCDMA test terminal has made improvement in function and performance, some domestic vendors such as Huawei and Hisense can provide test terminal.

46）Q: If the services of TDD is the same as that of WCDMA, what is its profit source?
A: From the view of operators, they wish TD can provide distinct applications different from WCDMA. At present, TD can provide higher positioning precision due to its advantages in uplink synchronization and smart antenna. Some of services are related to the carrier network, such as the positioning and PTT services.

47）Q: Before this field test, some operators have their own trial networks, how do they deal with the relationship between their trial network and field test network?
A: According to the regulations of MII, the frequency of previous test network should be taken back before this field test.

48）Q: How is the 3G IPR negotiations with foreign vendors now? Do they negotiate unitedly or respectively?
A: The 3G IPR negotiations are the second round but the result can not be published.

49）Q: What is the orientation of LCR, independent deployment or the supplement to WCDMA?
A: These two modes are feasible too, but independent deployment is more effective way for the development of TD.

50）Q: TD has gotten strong support from Chinese government, but it seems that operators lack the interesting to TD and it not favorable or the development of TD.
A: The concerns of operators can be considered because there are no TD commercial products and the large scale commercial deployment of TD networks haven’t been validated. We hope the operator can provide good proposals for the applications of TD.

51）Q: How to settle the radio interference matter during the field test including the interference of PHS, and when will the radio interference test specifications finish?
A: The radio interference test will be tested in Beijing including the interference test between PHS and 3G, and the radio interference test specifications have finished now.

52）Q: Do you think it is appropriate that tie up twelve vendors with six operators by force?
A: At present, the operators apply their list of technology and vendor, MII coordinates and confirms these later. I think it guarantee operators and vendors to join the field test to the utmost.

53）Q: Will PHS return the 3G spectrum later? what kind of positioning mode TD use and its precision is the same as that of CDMA2000?
A: I think TD will use the high frequency at the beginning, but the 3G spectrum occupied by PHS will be return later. TD applies GPS positioning mode, and its precision is similar with that of CDMA2000.

54）Q: The dual mode or triple mode handset is needed when deploying the WCDMA and TDD mix network, are there any plans for TDD?
A: The developing handset has considered the TD/GSM dual mode handset, the TD/GSM/WCDMA triple mode handset will be considered later.

55）Q: The chip makers are focus on single mode or dual mode? And the dual mode is GSM/LCR or WCDMA/LCR?
A: The GSM/LCR dual mode chip has been developed now.

56）Q: When will WCDMA and TDD mix network be tested?
A:I think it is hard before this September, the mix network deployment in the specifications is optional one. It can be test if conditions allow.

57）Q: When will PHS return the 3G spectrum? Is the TD positioning by satellite only or by network assistant positioning?
A: The return date is not confirmed. TD applies GPS positioning mode now without network assistant positioning.

58）Q: The TDD positioning precision is 15~25 meter and inferior to AGPS of WCDMA and that of cdma2000one, so what is its advantages?
A: LCR hasn’t been tested yet, according to the TSM test product last time, it is hard t for each code support each voice.

59）Q: Will TDIA declare the list of the third round new members? Are they mainly be the terminal and chip manufacturers? Are overseas enterprises allowed to join in TDIA?
A: TDIA will decide whether overseas enterprises can join the third round new members. But the TD-SCDMA special project approved by Chinese government will not confine to the TDIA members but consider the whole development of TD industry chain.

60）Q: According to the test result of operators, the capacity of WCDMA single carrier frequency is similar to that of GSM S8/8/8, right?
A: From the theoretical aspect, the spectrum efficiency of WCDMA is as 3~5 times as that of GSM. The detail network capacity needs to be validated in the field test.

61）Q: Will the 3G licenses be issued after mature TD product come out? When we can say the TD product is mature?
A: I think the issuance of 3G licenses will consider the maturity of TD product. The field test will be one of method to validate the maturity of TD technology and TD industry.

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