From 2G to 3G to LTE / LTEA in full swing, the widespread popularity of mobile communication technology has greatly changed the face of the entire human society. But the root cause lies in people's desire for more efficient use of spectrum resources.
Admittedly, limited spectrum resources are the cornerstone of the entire mobile communications industry. Therefore, many overseas operators have stopped 2G services and released spectrum resources for LTE network bearers. But at home, we still don't see any signs in this regard. The three operators, including China Telecom, China Mobile and China Unicom, must strive for more and more favorable spectrum resources as much as possible to lay the foundation for future market competition.
And the opportunity is here.
According to people close to the Ministry of Industry and Information Technology, the Ministry of Industry and Information Technology will complete the D-band (2500-2690MHz) planning work this year. Although it is in the high frequency band of 2.6GHz, it may need to be strengthened in terms of network coverage, but the bandwidth resources of 190M are still very attractive.
Because LTE is a typical broadband networking narrowband transmission, the effect of using 20M large bandwidth networking will be the best. In the lower frequency band, it is difficult for an operator to have such rich resources to support the networking; another reason is 2.6GHz is also a relatively mainstream LTE frequency band in the world, and operators can enjoy the cost and roaming benefits brought by the strong industrial chain.
So critical, all three operators are naturally eyeing. One of the most eager is the forerunner of LTE --- China Mobile, because for China Mobile, 2.6GHz is too critical for itself. It needs to use 2.6GHz to realize the construction of a benign industrial environment and competitive landscape, use 2.6GHz to form a global scale advantage, and attract more operators to join the TDD camp; it needs to use 2.6GHz to eliminate government, peers and industry chains against TDS / TDL Can't realize the concern of coordinated development, and strive for an early commercial / commercial test; it needs to rebuild a high-speed data network with large coverage and large capacity at 2.6GHz to cope with the explosive growth of mobile broadband access demand and regain its competitive advantage in the market; it Need to use 2.6GHz to achieve the "one-third of the world" rhetoric. In short, China Mobile really needs 2.6GHz too.
As Huang Yuhong, vice president of China Mobile Research Institute, expressed in an interview with the media, China Mobile hopes to be able to divide the D band into TDD modes. "China has planned 1.9G / 2.0G / 2.3GHz frequency, but 2.3GHz can only be used indoors, 2.0GHz is the main frequency band of TDS."
Scale advantage
Just like everyone is discussing two GSM and CDMA 2G technology standards, CDMA has obvious advantages over GSM in terms of technical realization and service carrying capacity, but the final result is completely opposite. Because in the telecommunications industry, Metcalfe's law exists, the value of the network is proportional to the number of users, and GSM occupies the advantage of a stronger and larger industrial chain.
Because TD-LTE and LTE FDD are out of the same category, it is not easy to directly compare technologies; however, TDD is inherently more efficient in using spectrum, the network deployment is more flexible, and the carrying capacity for asymmetric services is also stronger, but it is just The way is more complicated. But the current situation is that TDL lags behind the development of FDD. In addition to starting late, the weakness of the industrial chain is the root cause.
Therefore, by introducing 2.6GHz on a scale, the global strength of the TDD camp can be greatly improved at least on three levels.
At the government level, if the Chinese government completely divides the D frequency band into TDD, the huge population of China and the rapidly rising government influence will attract some populous countries or BRICS countries to follow suit, and the final allocation of the frequency band by the government will also be It will become the foundation for the healthy development of the global TDD industry.
In the operator camp, if China deploys 2.6GHz full TDD deployment, it will play a very good demonstration role for the international development of TD-LTE and attract more operators with TDD frequency bands to participate, because TDD's spectrum resources are more Cheap; and if you just choose F band (1880-1920MHz) for TD-LTE deployment, the enthusiasm of overseas operators will be greatly reduced.
In the equipment vendor camp, ZTE, Huawei, Ericsson, Nokia Siemens Networks, Aran and Datang all attach great importance to the development of TD-LTE. However, the shares of various manufacturers in the TDS era are very different. If China Mobile deploys TD-LTE and concentrates too much on the F band, the promotion of several overseas manufacturers is certainly not high. If a large number of deployments are made on the D-band, everyone has a chance, and the enthusiasm of the industry chain will be mobilized. Equipment vendors will also have more incentive to sell TD-LTE globally, rather than just China Mobile working hard.
Dispel worries
Judging from the operation of the existing network, TDS's "weakness" is not only a problem that plagues China Mobile, but also a barrier to China Mobile's deployment of TD-LTE.
If TD-LTE is deployed with great fanfare, the entire TDS industry chain, including the government, equipment vendors, and terminal vendors, will question China Mobile ’s original intention. As the first system technology innovation in China's communications industry in a century, TDS carries a lot of things beyond the technology itself, so TDS must be done well. There is no room for negotiation.
The large-scale introduction of the D frequency band may dispel some concerns of the industry chain to a certain extent. Because if the F-band is used for TDL deployment on a large scale, there may be a voice in the industry, "TDS high-profile pragmatic TDL low-key pragmatic." I woke up and found that China Mobile has completely transitioned from the TDS era to the TDL era, because upgrading is relatively easy. Just like China Mobile's pilot in a certain city, "replace a substrate, upgrade the software once, and add a pair of optical fibers."
From the perspective of the decision-making department, whether relying solely on the F-band can meet the scale-up technical test or the future commercial / commercial needs, this is a question mark. For the government, they not only hope that China Mobile can guide the development of TDL in both domestic and international markets, but also that China Mobile can support the best TDS industry chain, and also need to balance the feelings of the other two operators.
Because for China Unicom and China Telecom, mobile data services are the current competitive advantage. If the time window for this advantage closes prematurely, the entire industry chain will return to the dominant structure of China Mobile, and the industry restructuring in 2008 will be ended.
However, having said that, if the D band is completely divided according to TDD, China Unicom and China Telecom will have more variables on the road to LTE. If they are also allocated to the TDD frequency band, do they use TD-LTE to form a network, or do they sacrifice some of the spectrum resources to draw out isolation bands and insist on LTE FDD networking? Now, everything is unknown. But once the results of the D-band allocation are released, everything will be clear.
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