Next-Generation Mobile Communication 5G

Currently, each telecommunications field company is developing products to realize next-generation mobile communication 5G.
This next generation mobile communication standard 5G has the following three features.
1. High-speed large capacity
2. Low latency
3. Simultaneous connection of multiple terminals
We will develop a communication network that will satisfy all of these and start services sequentially. It is not yet decided how to operate with respect to simultaneous multiple terminal connections.
So far Japan has been proceeding with this roadmap to develop this 5G facility targeting the time of the 2020 Tokyo Olympic Games.
However, at the Mobile World Congress (MWC) held in Spain (Madrid) in February 2018, it was announced that mobile communication carriers and communication equipment manufacturers in each country will start commercialization of 5 G communication in 2019, It is necessary to aim at the commercialization of the same operators in various regions including the company ahead of schedule.
Commercialization experiments are planned in the United States and China in 2019 and commercialization experiment in Europe in this year from 2018. The goal of the commercial launch in 2020 in Japan has not changed so far in Japan, but it is also fully conceivable that the start of services will be accelerated due to the influence of other countries.

Changes and improvements in such communication standards will affect not only changes in fields that are limited to mobile communications like 3G to 4G, but also to all devices that can be connected by IOT.
As a simple example, it is expected to be utilized in the following fields.

Video distribution (4K, 8K)
Medical (remote control)
Automobile (automatic driving control)
Robot control (remote control)
Security service (remote monitoring control)
Amusement (video, VR experience)

High speed large capacity communication

High-speed large-capacity communication at 5 G is a communication that can communicate at 20 Gbps at the maximum, about 25 times the maximum of 800 Mbps currently used at 4 G to enable this high-speed and large capacity communication, used in Japan a lot Compared to LTE (3.9 G, currently being interpreted as 4 G in Japan) it is necessary to enable about 100 to 1000 times communication.
Therefore, while using the current 3G and 4G lines, a new communication band: 6 GHz band is used.
This will use higher frequencies than the 5 GHz band used in 2.4 GHz, 11 a, 11 b of the conventional WiFi standard 11 g, 11 b. This 11ac is practically used at a communication speed of 6.9 Gbps, which is about 11.5 times higher than the conventional 11n (the standard that can be used at both 2.4 GHz and 5 GHz).
If you are using a Wifi router at home and you are communicating with the communication standard 11ac, 11ac’s 5 GHz band communication is used in many devices 2.4 GHz band from other devices Although there is no interference, the communication sensitivity of WiFi leaves the WiFi antenna and there is an obstacle directly between the antenna and the mobile terminal, or there is a case that I felt a decrease in communication sensitivity occurring when moving to another room I think. Although increasing the communication frequency keeps straightforwardness, it is impossible to ignore the influence of obstacles and attenuation of communication capacity due to distance.
In order to solve this problem, it is necessary to improve the antenna technology (directivity, beam division multiplexing, use of millimeter waves) to linearly connect the antenna and each mobile terminal, and to increase the number of antenna elements (more than 100 Antenna element), it is necessary to increase the number of base stations themselves, in addition to increasing the antenna controlled by the current one base station to more than 100.

The significant increase in the number of base stations

Although the range covered by the base station at 4 G is about 1 km in radius, the interval between the base stations is calculated to be about 100 m to 200 m in the realization of 5 G, and the base station greatly increases (about 4 to 18 times as calculated) Is required.
Regarding the substantial increase in base stations, whether each type of mobile communication provider will set themselves as before or as common as Korea 4 companies (KT & LGU + & SK Telecom & SK broadband) set up a common base station and mutual use It is currently under consideration in many countries about whether to do.

Low latency

It is decided that the network delay standard in 5G will be 1.0ms or less.
This is a remarkable reduction of delays in current mobile terminals, taking into consideration applications to medical practices, automated driving techniques of automobiles, remote control of robots, etc.
Even in areas where it has been difficult to handle with mobile communication up to 4G, it will lead to technological innovation to many more fields by using this 5G network.
However, in the case of communicating in the order of the conventional terminal, antenna (base station), optical line, server, optical line, antenna (base station) and terminal, the network delay time is 0.5 ms, there is a possibility that a delay of 1.0 ms or more may occur, so communication in the same area will be handled by completing communication by placing a server in the antenna (base station) I will.

Simultaneous connection of multiple terminals

Even when there are many terminals within a certain range, it is necessary to create a mechanism that does not cause communication speed, capacity, and delay. As mentioned above, although we do not know how each company clears this mechanism for this simultaneous multi-terminal connection at present, it is premised that one million crisis per 1 km 2 can be connected to the communication line at the same time.

Method of communication

Construction of a communication network utilizing VSAT (low orbit satellite) as well as communication using optical lines
Although it seems that communication of high speed and large capacity will be performed using the 4G line up to now using the optical line as it is, for the area where the optical line has not arrived, VSAT (low orbit satellite) communication It is also considered to make connections by utilizing them.

The current situation in Japan
The current communication used by the Japanese is considerably proportional to the optical line reaching the home, or the Internet connection using the cable TV line has become widespread, there is not much trouble with the slow communication line. This can be said that there are environments in which it is relatively easy for laying of optical lines and cable television lines from areas with large land such as the United States and China due to the small national land of Japan. Also regarding the cellular phone, the communication using the current 4G line can be handled without problems in a considerable area where the population coverage rate is over 90%, so even opinions like whether the change to 5G is really necessary is heard.
Regarding video (television), 4K and 8K television are currently being released from each manufacturer one after the other in Japan, and many are on the shop front. However, the current Japanese television broadcasting does not deliver 4K and 8K, and even if you purchase 4K, 8K compatible television, it will not benefit from that. Moreover, with the 4K, 8K TV built-in devices currently being sold, it is not possible to display the 4K, 8K distribution that will start in the future, and it is in a state that it is impossible to understand that it is necessary to install new equipment separately in each household.

Our product correspondence
We develop and sell the following products corresponding to 5G next-generation communication standards.
We can offer optical communication products and VSAT products to sequentially shift to 5G via 4.5G using the current 4G communication network.

For base station main unit
Low Phase Noise VCXO 122.880 MHz
Crystal Resonator for Discrete Crystal Filter

UM-1 Fundamental Mode Crystal Unit  122.400 MHz band, 75.000 MHz band, 151.000 MHz band, etc.

VSAT Components Parts
Ku-band C-band VSAT BUC LNB etc.

We will post the product details one by one.
If you have any inquiries about the product, please contact our sales department.