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The expert calls signal flabby function the not complete mobile phone that buy 3G can be waited a moment again

April 7, 2008

　　Mobile phone of focal topic 3G

On April 1, chinese shift is in what 8 big cities of Chinese had 3G mobile phone formally to put number, shanghai area gives off number of 10 thousand 3G in all. Communicate intermittence, function special confine… in a week time, 3G is cruel showed a lot of issue, communicate besides video, net fast fast outside, what special function should 3G mobile phone still realize? Participator of research of standard of Chinese 3G mobile phone — , project of electron of Shanghai traffic university fastens Qian Liangbo of associate professor of wireless communication institute person to you one by one explanation.

“3G is bought without the person all round me, so I communicate without method video all the time.

” first have a taste of what is just in season that this is Chinese 3G mobile phone person the awkward trouble that one of summer gentlemen encounter, signal is not quite stable, communicate meeting intermittence, often close be less than a short message… 3G mobile phone does not have expect medium so good.

To this, shanghai joins big electron project is analysis of doctor of money good people says associate professor of wireless communication institute, trying business to appear with promotion phase at present all sorts of problems are normal. “To me character, want at least when 3G just can be bought when the GSM user that has 1/3 begins to use 3G. Want at least when 3G just can be bought when the GSM user that has 1/3 begins to use 3G..

　　 Problem one: Optional choose room is little

What reason China 3G uses is TD - SCDMA standard, only a few indigenous industries develop Oriental morning paper in the mobile phone that do TD: Summerly gentleman, how can you think of to buy 3G mobile phone?

Summerly gentleman: Dinkum for have a taste of what is just in season.

Oriental morning paper: Really, can represent first major buying the state of mind of the user. Money professor, you buy 3G? When does your individual prepare to use the mobile phone of 3G?

Money professor: I am not first purchaser. To me character, want at least when when the GSM user that has 1/3 begins to use 3G. Because, the experience according to abroad can forecast: After only the communication user when 10 ％ above begins to use 3G, the period that just can say 3G is popularized truly arrived.

Oriental morning paper: Summerly gentleman, when you buy 3G mobile phone, is the circumstance how?

Summerly gentleman: I bought a mobile phone in postal service hall of sea route of mobile the Huaihe River that day when, go the 3G mobile telephone of a LG only. I feel optional room is very little. And, the mobile phone seems to have a problem, a lot of users that buy LG mobile phone are mirrorred to shift, can have the case that does not receive a short message.

Oriental morning paper: Because be rolled out on the market at present,try commercial 3G mobile phone to have 6 type only, a lot of consumer are mirrorred alternative small. And still can put in all sorts of problems for use mobile phone, is this why?

Money professor: “Because TD is not the mainstream of 3G, terminal design amount is not so much. The 3G technology of the mainstream is WCDMA and CDMA2000 standard, the likelihood holds the market share that 80 ％ control, and what Chinese 3G uses is TD - SCDMA standard, the market share of this standard is controlled in 15 ％ . Accordingly, abroad’s famous mobile operation business basically is thrown on WCDMA, only a few indigenous industries are doing the mobile phone of TD to develop, in mobile phone chip the respect such as dimension of development, antenna exists possibly the problem with scant experience. In mobile phone chip the respect such as dimension of development, antenna exists possibly the problem with scant experience..

　　 Problem 2: Communicate intermittence

Reason this is the network covers an issue, TD network enclothes a likelihood to put in blemish east morning paper in the project: Summerly gentleman, the case that you feel to video communicates at present how?

Summerly gentleman: 3G is bought without the person all round me, so I communicate without method video all the time. Till yesterday, I cannot help really, the staff member that shows office to shift made a telephone call, undertook with the staff member video communicates one time. The effect is general, have occasionally protracted, the picture is not quite fluent.

In addition, the signal of the mobile phone is not stable also. Normal when, should show on the mobile phone for ” Chinese mobile 3G ” , but classics regular meeting changes in spite of oneself as ” China is mobile ” , be equal to me to often return 2G times again. Be equal to me to often return 2G times again..

Oriental morning paper: Try commercial client not less to have such report. Be like signal to be stabilized not quite, communicate meeting intermittence.

Money professor: This is the flaw that the network covers. TD network is enclothed in the project go up to be put possibly in blemish, bring about its signal to handle ability existence issue, report is signal on application insufficient stability.

　　 Problem 3: Use function confine

Reason operation business developed 3G mobile telephone optionally certain function, and rather than is all functional summer gentleman:

The function that can use quite now special also confine, basically be video communicates, next still a few get online, the function that sends and receive mail, in imagining like me so rich.

Oriental morning paper: Put number in 3G that day, many person that experience mirror: Of 3G advocate play a function, the function such as conference of TV of for example mobile phone, video did not debut.

Money professor: TD just bears the weight of the tool that data sheds. the data rate of medium bandwidth, 3G can realize all sorts of functions already completely. If be in,show level, user experience comes down, the function that feels 3G returns not comprehensive word, by industrial catenary medium software is designed and commercial pattern decides that, that is the problem of industrial catenary. That is to say, it is the certain function that operation business developed 3G mobile telephone optionally, is not all function. The maturity of this and TD itself system did not have inevitable connection.

Summerly gentleman:

We the process of try out 3G is medium now, still put in such and such problem, and abroad has begun experimental 4G, 5G.

Oriental morning paper: Is China the research that also having 4G?

Money professor: China ” B3G, 4G ” the lab of the first phase grinds to be finished already basically also beforehand.

Overall and character, TD is put in not perfect place for certain, trying business to appear with promotion phase at present so all sorts of problems are normal. 3G still has the process of a long-term gradual progress for certain, still a lot of need perfect link.

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Written by ITTech · Filed Under IT Magazine