5G killer app: millimeter waves, how far away is it from being our country?

What is millimeter wave?

Millimeter waves, as a kind of radio wave, used to be inconspicuous. Due to its long transmission distance, it can be used in the field of communication, and high-frequency light waves are also widely used in the field of digital and communication, only the millimeter wave in the middle is not affected.

However, from a certain point, millimeter waves suddenly became the focus of most people's attention.

Thanks to modern technologies such as 5G, autonomous driving and artificial intelligence, all of which use a technology called "millimeter waves". But the millimeter wave band is not precisely defined .what is a distinguishing feature of 5g mmwave.

1. Electromagnetic waves with a frequency range of 30-300 GHz (wavelength of 1-10 mm) are generally called millimeter waves, which are located in the overlapping wavelength range of microwave and far-infrared waves, and therefore have the characteristics of both spectra.

2. Millimeter wave technology itself is to have a very high bandwidth, the total bandwidth available can be as high as 135 GHz, is the traditional microwave bandwidth and 5 times, and secondly, through the millimeter wave beam is very narrow, can more accurately distinguish the ability of the target and restore the teaching of the target details.

In order to have a faster and more stable network connection

Millimeter wave becomes the second half of the competition of equipment in the 5G era.

Advantages of 5G millimeter wave

Global 5G network frequency below 6GHz and millimeter wave, and our 5G frequency below 6GHz network construction has been basically mature, so why abandon millimeter wave?

The biggest feature of millimeter wave is the abundant frequency band resources. Millimeter wave and below 6GHz can form a complementary relationship,qcm6490 and the frequency band of 5G millimeter wave is 24GHz-86GHz. it is about 16 times that of below 6GHz.

Millimeter wave technology can be easily allocated by the broadband network resources above 100MHz, not even up to 400GHZ or 800GHz. based on such rich frequency band resources in China, 5G millimeter wave wireless data transmission development speed we can more easily exceed the Sub-6GHz several times.

According to the latest results of Ookla * SPEEDTEST *, the average download speed of 5G sub-6GHz network is 5 times faster than 4g lTE network, while the average download speed of 5G millimeter wave network is 4 times faster than 5g sub-6GHz network, with an average speed of up to 900Mbps and a peak of over 2gbps.

Whoever can take the lead in completing the construction of 5G millimeter wave will be able to provide users with faster and more stable Internet services, and whoever can win the first place in the second half of the competition of 5G.

Application areas of 5G millimeter wave

5G millimeter wave, as one of the core technologies in the fields of high-speed access, industrial automation, medical and health care, intelligent transportation, virtual reality, etc., has a broad application prospect in many fields.

VR, a scenario with high bandwidth requirements, requires millimeter waves to meet;

Automatic driving and other "Internet of Things technology era", millimeter wave can help China's automobile can accurately perceive the living environment around the information, sharp recognition of the surrounding objects and the speed of the car, distance and so on;

Wireless projection, traditional WI-FI projection and local area network (LAN) delay is high, the image quality is not light, the signal is intermittent, and millimeter wave can make the image quality has a certain degree of improvement and clear, smooth.

5G millimeter wave is the inevitable direction of communication technology evolution

Millimeter wave is characterized by large bandwidth, low latency, and weak coverage because it has more frequency resources than the 5G sub-6GHz band, and it is the main way to provide gigabit connectivity in 5G networks, which is a strong guarantee to realize the initial vision of 5G.

It has been widely noticed and valued as a way to realize the revolutionary improvement of business experience and the digital transformation of millions of industries, and to truly realize the vision of "4G changes life, 5G changes society".

It is no exaggeration to say that in order to achieve the highest working rate of 5G, it is necessary to use 5G millimeter wave.

Challenges facing 5G millimeter wave

The 5G millimeter wave communication system faces the greatest challenges due to its high frequency band, high transmission loss, weak bypassing and grouping capabilities, and relatively limited coverage.

High-frequency communication has high path loss, high penetration loss from outdoors to the city, and high impact from buildings, foliage, or rain;

However, there are multiple solutions to the problem of 5G millimeter wave signal attenuation and blockage. First, 5G millimeter wave increases the equivalent omni-directional radiated power and improves coverage through advanced beam forming technology, which can easily achieve signal transmission over hundreds of meters and solve the path loss problem

Second, beam management for 5G mmWave has become a key focus of 5G mmWave standardization, enabling 5G mmWave to quickly capture new beams and dynamically implement beam switching when signals are blocked in some directions.

The last advances in semiconductor information technology promote 5G millimeter wave communication technology can be rapid economic development, the integration of large-scale array antennas and RF links into more cost-effective phase arrays, from the hardware for 5G millimeter wave system research to provide more powerful social support.