Competition of science and technology as a Olympic competition is intense, around 5 g of the battle of the radio spectrum, which country on earth, which company or which enterprise alliance would win the race?

In the mobile device number more than the number of human world, it is easy to forget that we haven't smart phones in the life of 15 years ago. From 1 g to 4 g, each generation of mobile network has brought us a faster communication speed and more new applications, widely influenced people's personal and professional life. Today, the whole industry is expected to between 2017 and 2020 the arrival of 5 g and agitation. Lead a new generation of 5 g network speeds of up to 10 Gbit/s, ultra low delay about 1 millisecond (50 times faster than 4 g), to our work and life brings infinite possibility, wisdom, unmanned, key city medical treatment, "content networking" revolution is just around the corner.

Needless to say, is the world's science and technology competition as a Olympic competition is intense, everyone would like to win in their respective fields, become the global benchmark. The communications industry for the future development, the challenge is various, mainly around the radio frequency spectrum, antenna design and measurement.

The challenge of 5 g "competition"

First, the data is transmitted by radio waves. Radio waves with different frequency bands, each band corresponds to different ways of communication, aviation and navigation signal, the television broadcast, mobile data, military applications, etc. With the development of the New Deal, they can use the rest of the radio frequency (RF) is limited. Both looking for a new space for communication, and coordination with existing application space, require complex communication and coordination.

Second, such as unmanned transport or new applications such as remote operation, do not allow the data connection interruption. Only when there is no limit to the transmission capacity of the cases, 5 g can provide uninterrupted user experience. At present, there are several network has been able to provide end users of wireless connection: cellular technology, wi-fi, millimeter wave, M, 2 M (device) to equipment. 5 g will be through the integration of different protocols of coordination and dispersive spectrum, which is ideal for end-users of seamless connection.

The increase of 5 g aims to adapt to the data throughput, many technologies are in the stage of assessment. And similar agreements coordination, 5 g network will not be based on a single technology, but the combination of multiple techniques. Even if now can't be together at use these technology, is also bound by the best way to work together in the future, in order to support the upcoming, a series of exciting applications.

Millimeter wave technology and large-scale MIMO is such two kinds of technology. Millimeter wave (MMW) made it possible to high speed, large capacity of data transmission, but can only be used for short distance, point to point and Angle line connection, "large-scale MIMO (multiple receive emission) is ideal and effective alternative. Multi-input multi-output (MIMO) is a large-scale base station USES multiple antennas, the formation of regional beam to each device, this can significantly improve the capacity and traffic density. This massive MIMO basic physics theory has been confirmed, and the experimental system is configured.

Withstand the test of measuring industry

Technology combination of 5 g for receiving waves is faced the test of antenna measurement industry. Industry innovation must follow the market demand, to provide flexible solutions, the measurement of a variety of needs assessment of new equipment. In the test each new application technology, also want to all kinds of technology, the combination of network elements and protocol testing, such as to ensure that the correct interoperability.

In many developing, the millimeter wave and mass MIMO technology has brought challenges. For those who want to benefit from high speed, large capacity millimeter wave spectrum of people, really need the whole system can provides a measure of the millimeter wave band. At present, only a small part of the system can provide. Because most of the available radio spectrum bandwidth is at higher frequencies (up to 100 MHZ), the key challenge is to design appropriate also antenna, once to conquer these challenges, they will get in 5 g of "race" considerable progress.

The working principle of MIMO system is based on rf channel response characteristics of baseband algorithm. Share, because the baseband is transmitters and receivers and transmitters and receivers are likely to come from different suppliers (supplier of infrastructure and equipment suppliers), then the algorithm all detailed list of required parameters must be specified in the technical standards in the file. For large-scale MIMO, this can be a very complex and detailed specification, so as to ensure interoperability.

Another challenge is associated with the field "no coupling device", large-scale MIMO need to design the large antenna array is compact, so it is critical to cost and efficient deployment. This means that there is unlikely to be rf connector or attached to a port space test equipment test. Millimeter wave antenna miniaturization has led to this dilemma. Logic and is expected to step is "air interface" (OTA) test.

In general, the rf test equipment in the future is full of challenges, will require very sophisticated equipment and flexible test solution, to resolve the millimeter-wave transceiver and (or) for large-scale MIMO provide better intelligence information. More complex, and even can be adjusted to the dark room will have more demand of various kinds of spectrum. In addition, the use of multipath fading channel fading simulator, and the technical requirements needed for this equipment and ability, will become more important.

Finally, we have to face time pressure. The complicated test needs to be done in the shortest possible time, because this is a game.

5 g of the development of the Olympic competition

The world sports competition is actual deployment of advanced technology and large-scale test of the main driving force.

In 2018, the Korean Olympic winter games and Moscow World Cup will be an excellent chance to 5 g test application.

Japan summer Olympic Games in 2020, will be the beginning of 5 g live demonstration, also will become the basis of commercial applications.

At present, which country on earth, which company or which enterprise alliance will win in the 5 g race, it's difficult to clear, but what is clear is that the winners not only depend on the speed of innovation, but also in the subsequent equipment test ability to win. The whole industry is faced with complex and difficult challenges, I am convinced that: the first to pass the test businessman will lead the development of the market, and set industry standards for others to follow.