| REVIEW | 5G understand the people know, there are two main bands 5G network, one is sub-6GHz, the other is a millimeter wave (Millimeter Waves). In fact, we now are based on the LTE network sub-6GHz, and millimeter wave technology is the key to the realization of the Imagination 5G era. However, there are experts on the Brooklyn 5G summit this month, terahertz waves (Terahertz Waves) might be able to make up for shortcomings millimeter waves to accelerate the process 6G / 7G achieve. |
5G understand the people know, there are two main bands 5G network, one is sub-6GHz, the other is a millimeter wave (Millimeter Waves). In fact, we now are based on the LTE network sub-6GHz, and millimeter wave technology is the key to the realization of the Imagination 5G era.
Unfortunately, decades of development in mobile communications, for various reasons, millimeter wave has not really into people's lives.
However, there are experts on the Brooklyn 5G summit this month, terahertz waves (Terahertz Waves) might be able to make up for shortcomings millimeter waves to accelerate the process 6G / 7G achieve.
No. 23 to No. 26 this month, the sixth Brooklyn 5G summit be held as scheduled, the contents of the summit involving 5G deployment, lessons learned, and 5G development prospects and so on.
In addition, the Dresden University professor and founder of NYU Wireless Gerhard Fettweis of Ted Rappaport also on the summit talked about the potential of terahertz waves.
The two experts said:
- Researchers have begun to study the terahertz wave, its frequency will be a key component of next-generation wireless technology.
Fettweis recalled in his speech at the summit in the previous generations of mobile communications technology, terahertz waves are also discussed potential limitations in addressing 5G, he pointed out:
We are about to enter the era of 5G, which means a lot to the application of Things and AR / VR technologies such terms. Although 6G and previous generations of technology, there are many similarities, but it will also make up a lot of flaws.
Well, the experts are so optimistic about the terahertz wave in the end what is backing it?
Terahertz waves in 2004 proposed by the United States, is listed as one of "change the future of the world's top ten technology." It wavelengths between 3μm to 1000 m, and a frequency between 3 THz to 300GHz, higher than the highest frequency of use 5G, i.e., a millimeter wave 300GHz.
As can be seen from the figure above, the terahertz wave between the optical wave and the radio wave, and this gives it the rest of the electromagnetic properties different to some extent. In other words, the terahertz wave and microwave communications both Lightwave advantages, i.e., high transmission rate, high-capacity, highly directional, high permeability and high safety and the like.
Theoretically, in the field of communications, the higher the frequency the greater communication capacity. And terahertz frequency than currently used microwave to 1 ~ 4 orders of magnitude, it can provide a microwave radio transmission rate can not be achieved. Therefore, it can solve the transmission of information subject to the bandwidth problem, but also to meet user demand for bandwidth.
While many experts are convinced that terahertz waves would subvert the communications industry, however, it is not known exactly terahertz waves can make up for what the defect. Because mobile operators around the world has just launched its own 5G network, in order to discover deficiencies will take time.
However, Lei Feng network (public number: Lei Feng net) believe that the physical properties of terahertz waves has highlighted the advantages it has. For example, the terahertz wave is shorter than the millimeter wave high frequency. This means that terahertz waves can propagate faster and more data, therefore, the introduction of mobile network terahertz waves may be able to solve the problem of 5G in data throughput and latency aspects.
Fettweis in his speech also shows the results of the test, within 20 meters of the terahertz wave transmission speed is 1TB per second. Although this result is not particularly good, but Ted Rappaport still believe terahertz waves is the basis for future 6G, 7G's even.
As a pioneer in the field of millimeter-wave research, Rappaport strong evidence of a role in the millimeter-wave 5G network. He concedes, thanks to the terahertz frequency, as well as improving the current cellular technology, people will see in the near future, the smart phone has the computing power similar to the human brain.
Of course, to some extent, which means that everything is highly speculative. But if trends have been in accordance with the present situation continues, then in the next decade, we expect to see mobile operators will terahertz waves used in communications technology.