When 5G first appeared, everyone thought it would leave 4G behind. Some people even worried that their traffic would run out in an instant. However, now that 5G is used, it seems that it is no better than 4G. How much faster? Many people are beginning to wonder: Why is the 5G network speed not as fast as imagined? In fact, the popularization of 5G does not happen overnight. It involves all aspects, among which mobile phones are also a key factor. Due to the shortcomings of traditional mobile phones that support n28, they cannot give full play to the advantages of the 700MHz frequency band, which is also one of the important reasons for the slow speed of 5G networks.
The so-called n28, which is what we usually call the 700MHz frequency band, has lower frequency, longer wavelength, low propagation loss, and strong penetration than other 5G frequency bands. It is more suitable for large-scale continuous network coverage. Therefore, Known as the "golden band". As network construction becomes increasingly perfect, n28 has become a standard feature of 5G mobile phones, and the time users use n28 has also increased significantly.
However, traditional mobile phones that support n28 can only achieve 2-way downlink reception (2Rx) due to the large size of the low-frequency antenna and space limitations of the mobile phone. As a result, the speed advantage of 5G cannot be fully exerted, and the signal strength is also affected. Due to the restrictions, the signals in places such as high-speed trains and elevators are not ideal.
Thankfully, some mobile phone manufacturers have now noticed this. For example, OPPO recently released the "Super n28" technology, which is the first time in the industry to realize 4-channel n28 downlink reception (4Rx) on mobile phones. Effectively improves the speed and signal of mobile phones in this frequency band. This technology is extremely difficult. OPPO has invested a lot of R&D resources since 2019 to study how to overcome industry problems such as small mobile phone space, strong antenna coupling, and immature devices. Finally, it innovatively adopted Eigenmode 4 antenna technology to achieve n28 downlink. 4 way reception. In addition, OPPO also cooperated with the supply chain to develop a distributed amplifier to overcome the large link loss of the PCB board under 4 antennas and solve the 4-way imbalance problem.
The network speed improvement brought by "Super n28" technology is very obvious. After testing, its download speed is more than 2 times that of traditional 2Rx, and can even reach nearly 20 times in extreme scenarios. And thanks to 4 antennas, the signal strength is stronger than traditional mobile phones under the same conditions, especially indoors. . With the help of OPPO's technology, even if we are in places with poor 5G signals, such as underground garages, subways, etc., we can still smoothly browse TikTok and play games without delay in sending WeChat messages and making phone calls, avoiding the inability to The awkwardness of sending and receiving messages.
It is reported that OPPO has applied for 40 related patents for this technology, which once again shows OPPO’s strong research and development capabilities. According to the "Global 5G Patent Activity Report (2022)" released by the China Academy of Communications, OPPO ranks among the top ten in the world in terms of the number of effective global patent families, and in the 2021 International Patent Treaty (PCT) application number ranking, OPPO ranks first in the world. six. This shows that OPPO has strong strength in the mobile communication industry, which is also an important reason for the birth of "Super n28" technology.
It is worth mentioning that the "Super n28" technology is not far away from us. It has been confirmed that it will be applied to some OPPO models that will be launched in the second half of the year. By then we will have a more complete 5G Experience, whether you are watching videos or playing games, you can feel the effect of double improvement in network speed and signal. It has to be said that OPPO indeed attaches great importance to user experience and takes user needs as the guide for its own innovation. I believe that this technology will continue to improve, and OPPO will have more new technologies in the future, which is worth looking forward to.