They have made important contributions to global 5G standards. Now the 5G chips they have mastered the core technology will soon be ready for commercial use, and they are in a leading position in many performances.

There is a Chinese technology company that has been quietly conducting research and development on 5G over the years and has made important contributions to the global 5G standard. Now, the 5G chip they have mastered the core technology will soon be ready for commercial use, and many of its performances are in a leading position. . This low-key company is MediaTeK from Taiwan, China. Everyone is accustomed to calling it MediaTek , or MTK in English!

In fact, the name MediaTek is familiar to everyone. In the 2G era, dual-SIM and dual-standby mobile phones basically used MediaTek chips. In the 3G4G era, MediaTek's processors were also adopted by mainstream mobile phone manufacturers and once occupied most of the mid-to-low-end market. . Strictly speaking, MediaTek is a chip design company. Like Qualcomm and HiSilicon, it is responsible for designing various chips independently, and the production is handed over to foundries such as TSMC. Being able to independently design chips is already at the top of the world, so there is no doubt about MediaTek's technical capabilities. So what decent results have they made so far after they have continued to invest in research and development on 5G over the years?

Just now, I participated in a 5G technology exchange meeting held by MediaTek’s Beijing headquarters and learned a lot of first-hand information. I will share it with you below:

The speaker of this exchange meeting was Dr. Fu Yikang, senior manager of MediaTek’s communication system design department. Dr. Fu is also a senior member of the GTI 5G Sub-6GHz project lead IEEE and is an absolute global 5G master.

Dr. Fu introduced MediaTek’s contribution to 5G technology over the years. Its 5G manuscript share has increased four times compared to the 4G era. Although the total volume is not as good as that of Huawei and other companies, the quality of its manuscripts is very high, and its acceptance rate by 3GPP is as high as 43%. , its contribution to the entire 5G standard is still very significant. MediaTek also serves as vice chairman of RAN 2 and leader of the 5G Sub-6GHz project team, becoming one of the important forces promoting 5G development and an honor for Chinese companies.

MediaTek has launched the world's first SOC that supports NSA/SA. It is a mobile phone processor that truly integrates 5G baseband. It will help Chinese mobile phone companies gain first-mover advantages in 5G.

So, what are the technical features of MediaTek’s 5G chip? One of the advantages of

is that MediaTek chips can greatly increase the uplink transmission speed of on 5G mobile phones!

In the NSA hybrid networking mode currently commonly used by global operators, MediaTek's unique uplink dynamic power sharing technology can bring an average speed increase of more than 28%. For example, under the same 5G network conditions, the uplink rate of other mobile phones is 50Mbps, then the uplink rate of mobile phones equipped with MediaTek chips can reach 64Mbps. This speed increase will be very useful in many scenarios with relatively high uplink requirements, such as during live broadcasts. Return some high-definition videos, return large files, etc.

So what is the principle of ?

When the mobile phone is far away from the base station , due to the low transmission power of the mobile phone, the loss of data transmission to the base station will be relatively large, so the uplink rate will be significantly affected. At this time, if there is no MediaTek technology, the mobile phone will choose to use a single 4G or single 5G frequency band transmission is inefficient. With this technology, the system will automatically judge and select the frequency band through an algorithm, and use both 4G and 5G frequency bands for transmission, thereby increasing the upload rate. Simply put, 5G mobile phones using MediaTek chips upload data faster than mobile phones using other 5G chips, and the further away from the base station and the more remote the location, the more obvious the contrast will be. This technology is currently only available to MediaTek in the world!

In the future SA independent networking mode, MediaTek's self-developed UL uplink control channel precoding technology can bring about a 30%-60% improvement in uplink coverage, and UL high-power terminals can bring about a 40% improvement in uplink coverage, which is equivalent to 25% increase in uplink speed. The performance improvement of

is very practical for 5G mobile phones and other terminals, and will significantly improve the user experience and practicality of the terminal.

Power consumption is a big problem that plagues the current commercial use of 5G mobile phones, because the current commercial 5G baseband chips are all plug-in, and mobile phones under NSA need to be connected to 4G and 5G at the same time, which often leads to excessive power consumption and heats up after a while. Obviously, this is definitely not what users want.

One of MediaTek’s 5G main directions is terminal low-power technology! They are key contributors to low-power technology in 5G international standards.

Let’s talk about this technical principle

Take video as an example. In 4G or 5G mode, when watching a video, the mobile phone will turn on the full-speed mode, that is, it will always maintain a high-speed receiving state. In fact, when watching the video, the mobile phone will have an advance cache for the video. At the beginning, Video content will be downloaded to the cache at high speed. Later, the data channel is basically not used to transmit data, and only the control channel is used. However, the mobile phone does not reduce the transmission power due to the decrease in data transmission demand, resulting in a lot of wasted power. MediaTek's low-power technology allows mobile phones to use high power when transmitting data and maintain low power when not transmitting, thereby achieving the purpose of saving power and extending the battery life of the mobile phone. Therefore, future mobile phones using MediaTek chips will generate less heat than other mobile phones and will last longer.

Currently, MediaTek’s 5G chips, like chips from other manufacturers, have gone through internal and external field tests organized by the competent authorities. MediaTek has completed indoor NSA and SA tests, and outdoor tests are in progress. This progress will determine the future processing of MediaTek mobile phones. device launch process.

In the NSA and SA tests organized by authoritative departments, MediaTek performed very well, even surpassing many powerful manufacturers.

In short, MediaTek’s continuous investment in 5G is now gradually bearing fruits. Dr. Fu said that the reason why there is no rush to commercialize the latest processors that support NSA and SA is because on the one hand, domestic 5G networks need to be built as soon as possible. , only MediaTek chips can come into play. On the other hand, MediaTek continues to polish and pursue the ultimate, making sure that the chips bring the best experience to users.

believes that MediaTek will make more contributions to promoting the development of the global 5G industry chain and the continued development of China's economy on the road to 5G.