On May 7, the ministry of industry and information technology (miit) issued a notice on further promoting the comprehensive development of the mobile Internet of things, guiding new IOT terminals to gradually exit 2G or 3G networks. In fact, the three major operators China Mobile, China Unicom, China Telecom have already started, or are preparing to clear out 2/3G, but the choice of each is different, mainly with their own network deployment situation is different.
China Unicom chose to drop 2G, or its GSM, network
Speaking of China Unicom's GSM, in fact, has been in the network system of China Unicom, belonging to a more embarrassing position. The earliest license China Unicom obtained was the GSM license, and it also built some GSM base stations.
Originally is well developed, but the United States in China's accession to the WTO when a condition, is that China must accept CDMA. The end result is that China Unicom has to build both GSM and CDMA networks.
China Unicom's GSM network itself cannot be and China Mobile, China Mobile's GSM coverage rate is too high, in this case, China Unicom's network center of gravity will tend to CDMA, but when the C net cover almost telecoms and reform, China Unicom C network was sold to China Telecom, China has entered the era of 3G, China Unicom's work center of gravity and transferred to 3G network, also is the construction of WCDMA network.
WCDMA is 3G system, and support voice and call at the same time, so only support call GSM position is very awkward, has not been built coverage. Although the GSM coverage of China Unicom is not very good, its frequency band is very good. The low-frequency 900M band is more suitable for basic coverage.
In the 4G network, Unicom has been ridiculed, coverage breadth is not good. As Unicom is the poorest among the three operators, it needs more 900M frequency to build LTE, because the low frequency can use fewer base stations to achieve better coverage.
One of the most important applications in 4G is NB-IOT. This Internet of things application also needs low frequencies, which have a stronger deep coverage capability, which is also required by the Internet of things.
China Mobile select unsubscribe 3G
China Mobile has started to phase out its 3G network in 2019, and many of its base stations have been shut down, sources said. So why phase out 3G, not 2G?
In fact, those who are familiar with the three major carriers may have heard that China Unicom and China Telecom are eliminating the 2G network, because their 2G runs in the important frequency band of 900MHz, so the good frequency band will be more efficient to 3G and 4G.
The mobile 4G network is not yet capable of carrying voice calls, which is done by 2G, so it will take a lot of manpower and resources to change, so the 3G network will have to be eliminated.
In addition, it will cost a lot of money to maintain these 2G and 3G base stations and networks every year. By removing these networks, we can unload a lot of economic burdens and have more strength to prepare for 5G networks. Even netizens can see clearly: "this is giving way to 5G!"
Only China Telecom 2G/3G double G clearance
As early as October 1, 2018, China Telecom announced that it would stop the storage of 2G and 3G mobile phone terminals." The issue of this new regulation for some users will not be much affected, but for users in remote mountain areas, there will be no communication available!
Since the end of storage of 2G/3G mobile phones means that the 2G/3G network will be eliminated, for telecom users in remote mountainous areas, 4G is still an extravagant hope, not to mention the current popularity of 5G.
2G, 3G mobile phone to stop put in storage, is the first step to repel and 2G / 3G network, because mobile phone stop after storage, repel and 2G / 3G network will become a lot easier, also can save a lot of cost, because every year telecom on 2G / 3G network investment is very terror, repel and seemingly helpless, 5G network is in order to better development.
