Recently, the reporter followed China Mobile's measured 4G+ service in Shenzhen. Through carrier aggregation technology, the measured speed of the live network is up to 220Mbps, and the average download rate is stable at 170Mbps. However, it is understood that there are relatively few mobile phone terminals supporting carrier aggregation. Apple's new iPhone6s released on September 9 is expected to adopt Cat.6 LTE technology to support carrier aggregation networks.
5 big cities open 4G+ peak up to 220Mbps
"Carrier aggregation technology can improve network coverage and increase network speed, which is the best solution to increase user speed." Shenzhen Mobile Engineer Yan Shuihua told reporters. According to the test results of a large shopping mall in Shenzhen, the download rate of the current network reached 220Mbps, and the average download rate was stable at 170Mbps.
The so-called carrier aggregation technology is a key technology to aggregate two or more carrier units to support larger transmission bandwidth. To make an analogy, the 4G network is likened to a highway. Carrier aggregation combines two or more single lanes into one more spacious lane, and the rate is naturally improved.
This year, China Telecom and China Mobile have proposed the concept of 4G+. China Telecom launched the “Tianyi 4G+†business in 17 cities in August this year; China Mobile also proposed to implement LTE-A carrier aggregation technology at the Shanghai GTI Summit. Speed ​​up the entire network to 200Mbps-300Mbps.
According to the introduction of Shui Shuihua, Shenzhen Mobile launched carrier aggregation technology in the original SAR of Shenzhen and the central area outside the SAR in March this year, involving 3,537 base stations.
It is understood that China Mobile has chosen 5 cities in Guangzhou, Shanghai, Jiangsu, Anhui and Zhejiang for commercial testing of 4G+. After the conditions are ripe, it will be officially commercialized. As the capital, Beijing Mobile is currently conducting a simulation test of carrier aggregation, which is still in the testing stage and is expected to be commercialized by the end of this year.
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