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The author:(作者)qq
published in(发表于) 2014/6/6 8:32:55
How TDD and FDD in China became two opposing parties？ ，

How TDD and FDD in China became two opposing parties?
-4G network, TDLTE,FDDLTE,FDD licence-IT information How TDD and FDD in China became two opposing parties?

4G startup in China over the past six months, proved incomplete licensing patterns to some extent suppressed eruptions of 4G is supposed to appear in China. At the beginning of Ministry issued three TD-LTE at the end of last year, the industry will have a lot of comments that lack LTE-FDD of Chinese 4 g is not complete. TD-LTE licensing has been embarrassed by China Telecom and China Unicom, link 3G many advantages in the age of threats, hit a 5-year low in April added.

Telecommunications in April renewed loss of 1.03 million mobile users, 1 – April, cumulative net decrease of 3.41 million mobile users. This licensing policy should get the most positive move 4G business is also growing fast, user April growth of less than 4 million 4G hit the market's wait-and-see universal doubt.

Last week, CCTV's main survey of moving 4G speeds its declared moments 4G network out of a hundred trillion per second water, which naturally exacerbated on 4G's wait-and-see mood in the market. CCTV in Beijing, the tests show that the move claimed hundreds of megabytes of bandwidth TD-LTE actual is less than one-third per second, even less than 3G networks of telecommunications interchange rate in many places. This user-initiated as much national test 4G speed, results showed its 4G network in many places decrepit, that move around on pins and needles.

In this context, patterns of 4G license renewed concern, China Telecom Chairman Wang Xiaochu said recently, which have applied to the Ministry of FDD mode of 4G license, currently in close communication with the Government, eager to obtain a licence. China Telecom's high profile stance in the industry appears to be quite strong. In fact, succeeds in moving equate TDD-LTE with TD-LTE and was marketed as an ' independent standards, China Telecom and China Unicom suffered a terrible opinion trap. As long as both publicly called on the Government to expedite the issuance of FDD licence will immediately buckle Hat does not support independent standard, more analysis of eruption does not appear TD-LTE growth directly attributable to telecom and Unicom negative at TD-LTE follow, "sideng" FDD-LTE licence. The seemingly logical conclusion Telecom Unicom retreat on the spot.

China Telecom and China Unicom,from the outset, TD-LTE and LTE-FDD are not contradictory. China Telecom Chairman Wang Xiaochu as early as last June, illuminates the concept of fusion network, miit Minister Miao Wei on TD-LTE licensing also said that future international trend towards LTE-FDD and integration of TD-LTE development . Similarly, China will never be a single network in the future. Certainly, reflect in TD-LTE built network speed Shang, telecommunications Unicom and almost leap type built network of move compared to does is enough "active", in telecommunications market move still who alone big of pattern Xia, in the telecommunications and in the Unicom of funds cost has been stretched, plus huge of 3G investment also far is not recovered, in TD-LTE Shang full inputs contrary to has market most basic of cost proceeds principles.

From the perspective of technology, international standards organization at the beginning of LTE design requires TDD-LTE and LTE-FDD mode to maintain a high degree of consistency in order to facilitate the TDD/FDD dual-mode implementation of LTE system . TD-LTE is identical to LTE-FDD core network, and wireless network 90% more than GM, their main difference of wireless products to send and receive information in different ways. Due to LTE-FDD-band coverage performance is better, but a narrower bandwidth, TD-LTE spectrum covered is limited, but greater bandwidth, integration between network advantages, therefore, the current global networking TDD/FDD Fusion has become a trend, and is basically used to LTE-FDD network coverage, capacity on TD-LTE hotspot.

On in the telecommunications and in the Unicom for, used fusion group network from the aspects see are is most economic of 4G built network mode , but this originally most simple of select is due to so-called of autonomous standard was accused, move will TD-LTE publicity for autonomous standard, main is from market competition angle departure, just if Government decision-making was Enterprise competition kidnapping words, that will is very dangerous of, China Telecommunications apparently stand such of toss. In the 4G era, TD-LTE and LTE-FDD is only open for competition, to common prosperity, so as to circumvent the lack of competition in the market environment will inevitably lead to monopoly of the group. If you keep the two opposites, and would only make China 4G with too much unnecessary burden or even demonized, as carriers cut-throat competition and policy game "battlefield".

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