With the advent of the 5g era and the launch of various 5g products, 2g3g networks that have lost value and advantages over 5g will withdraw from network services in the near future. However, many users still use 2g3g networks, so 2g3g withdrawal has attracted great attention of many users. What is 2g3g network? Why should 2g3g withdraw from the network? These must be the questions of many 2g3g users. This article will explain to you what 2g3g network is and the reasons for 2g3g withdrawal.
What are 2G and 3G networks
2G network refers to the second generation wireless cellular telephone communication protocol, which is represented by wireless communication digitization and can carry out narrowband data communication. Common 2g wireless communication protocols include GSM frequency division multiple access (GPRS) and edge and CDMA 1X code division multiple access, and the transmission speed is very slow.
3G network is the third generation of wireless cellular telephone communication protocol. It mainly develops high bandwidth data communication based on 2G and improves the security of voice communication. The general data communication bandwidth of 3G is more than 500kb / s. At present, there are three commonly used standards for 3G: WCDMA, CDMA2000 and TD-SCDMA. The transmission speed is relatively fast, which can well meet the needs of mobile Internet access, but the playback is slow HD video is difficult.
Why withdraw from the network?
As for why to withdraw from the network, Xiang Ligang said that TD-SCDMA, like other 3G and 4G technologies, mainly functions as data services. However, for 3G technology, a base station only supports about 20m traffic, and its capacity is very weak.
In addition, the reason for the withdrawal of the network is to make efficient use of the spectrum. Fu Liang said in an interview with zhongxin.com that the original 2G network occupies some frequency bands, and some frequency bands are scarce, which can be said to be valuable resources. After reuse, they can be used in the construction of 4G network, which is conducive to improving the network quality and network wide area coverage.
The operators themselves admit this. In April 2018, China Unicom announced that it was orderly promoting the frequency reduction of 2G network. At that time, China Unicom said that the bandwidth resources would be used for higher 4G network and deployment.
Xiang Ligang also said that if China Mobile can clear out the 3G spectrum and use it for 5g, it will greatly improve the spectrum utilization and efficiency, which is also very beneficial to the construction of 5g network.
With regard to 5g frequency band, in December 2018, the Ministry of industry and information technology issued licenses for the use of 5g low frequency band test frequency to three major operators. Among them, China Telecom and China Unicom obtained licenses for the use of 3500MHz frequency band test frequency, and China Mobile obtained licenses for the use of 2600mhz and 4900mhz frequency band test frequency.
Subsequently, the Ministry of industry and information technology also issued the measures for the coordination and management of interference between the fifth generation mobile communication base station in 3000-5000mhz band and radio stations (stations) such as satellite earth stations.
It can be seen how precious the frequency band is. No wonder operators want to plough the frequency band again. So, what user are you and will you try 5g?
Why turn off 2G and 3G networks?
In fact, in the final analysis, it is the operators who shut down 2G and 3G networks to carry out spectrum re cultivation in order to clear the frequency, so that they can have more sufficient spectrum to support the development of 5g networks. Operators in Japan, the United States, Australia and other countries began to do it as early as around 2010 in order to achieve faster commercial 5g networks.
Back in China, China Unicom has made the fastest progress in clearing the 2G network. At present, all provinces are encouraging 2G users to change machines and reducing the frequency of 2G network base stations. As for China Telecom, it is necessary to clear the 2G network and 3G network together, because the 800MHz and 900MHz frequency bands occupied by these two networks should be recovered and ploughed again.
For China Unicom and China Telecom, recovering these golden bands means that the network construction cost is reduced and the network construction speed is faster, which is in the upper hand in the competition with China Mobile.