This professional problem, I answer back and forth.
What must make clear is, after executing 5G signal in the round, the mobile phone of 4G not only won't be washed out, and service quality will be better, consumption will be cheaper.
At present business of 3 big operation is network of use SA(independent group) will build 5G network, that is to say 4G network will coexist for a long time with 5G network, thereby, although 4G mobile phone cannot receive 5G network, but the meeting is OK all the time use go down. The metric system of 5G decided R15 version, finished EMBB(to increase only temporarily model mobile broadband) parameter, that is to say, at present 5G mobile phone and photograph of 4G mobile phone are compared, unique advantage is to may achieve 10Gbps of speed of the biggest download.However, the most important is however, can individual user enjoy the download rate of 10Gbps really? The has 10Gbps downloads speed service that uses really?
Current, distributive frequency of our country 5G paragraph it is 3300-3600MHZ, 4800MHZ-5000MHZ, what the 3300-3400MHZ that makes clear already basically can give 5G is indoor distributing use, so also say, the frequency of the minimum that leave paragraph it is 3400-3500MHZ can use as 5G is enclothed.
What we know is, the attenuation of loud wireless signal jumps over frequency Duan Yue big, penetrable performance is poorer also, bring about signal to enclothe want distance radical station to compare close talent travel.
Although 5G used Massive MIMO technology, but will look from the principle, if need to achieve the rate of 10Gbps, the user that every village supports is few, so the issue came, who is this part user? A village can a few users are used, charge cans be imagined, that is to say 5G times is speed adds discharge double deck likely very of plan cost, extremely fast rate is higher.
Next graphs are the principle sketch map of Massive MIMO:
And it is very close that the signal that does not use Massive MIMO is enclothed, contrast sees figure below:
The main frequency that 2600MHZ is China's at present mobile TD-LTE paragraph, the Band1 frequency that 2100MHZ is Chinese telecommunication and Chinese UniCom paragraph, 1800MHZ frequency paragraph the Band3 frequency that is telecommunication and UniCom paragraph, also be to basically enclothe frequency paragraph.
Labour believed a ministry to issue a document at present, ask business of 3 big operation cannot be built with abandoning 4G, requirement 4G is enclothed achieve 98% .At present the integral 4G of business of 3 big operation is enclothed rate actually very insufficient, especially remote region, build a lot of 4G even base station, that is to say, the signal of 4G is enclothed can strengthen greatly, that is to say the signal of 4G mobile phone will be better and better.
Meanwhile, the 4G of business of 3 big operation still is in to 4G+ gradual progress.LTE is 3.9G product actually, the follow-up LTE-A that supports 1Gbps of speed of the biggest download just is real 4G product, was called 4G+ by business of 3 big operation nevertheless.
That is to say, the 4G of complete edition downloads speed to need to achieve 1Gbps. Thereby, the download rate of mobile phone of the following 4G will be more rapid, namely the user experience of 4G mobile phone will be better and better.
Because 5G itself is enclothed and satisfy all user high-speed reason hard, business of 3 big operation still can publish policy to attract an user to use 4G, it is cheaper and cheaper that so the endowment cost of 4G still is met.Altogether, after 5G signal is enclothed in the round, the mobile phone of 4G not only won't be washed out, and the user still has better use experience, and be compared and character, completely enough user used the bandwidth of 4G, sexual price is compared good, meet more use so 4G serves.
Above individual is nearsighted, the welcome criticizes point out mistakes so that they can be corrected. Those who like is OK pay close attention to me, thank!
