At the recent 5G Forum USA in California, representatives from a number of communications giants from Asia gathered to discuss how new radio frequency (RF) technologies and virtual networks can help make it easy to transition to 5G cellular network.
South Korea plans to pilot 5G network by the end of 2017
Hyeon-Woo Lee, chairman of the 5G Forum Global Strategy Subcommittee, stressed that 5G organizations around the world are working together to bring data rates per user Gbit/s by 2020. The 5G network needs to establish a bridge between industry and government, identify technologies, study spectrum, and upgrade all related technologies.
5G services must have high energy efficiency, ultra-high precision positioning, and excellent cost-effectiveness and reliability. In order to achieve this goal, the industry must develop multi-radio access technology.
SK Telecom chief architect Park John-Han said: "Unlike 2G, 3G and 4G, 5G is not just a single RF access technology, it will also combine existing RF access technology and the latest RF access network. Road (RAN), and unrestricted implementation of backward compatibility."
Lee expects that the first 5G test deployment will begin in December 2017, and it will be in the form of a LTE-A large cellular base station and a new RAN for a small base station of centimeter (CM) or millimeter wave (mmW).
In order to get 5G cellular communication ready in 2020, several Asian companies are working on R&D and standards. Lee cited some cooperation cases, including the Northeast Asia Future Forum and the cooperation between the Korean 5G Forum and the China IMT-2020 (5G) promotion group.
South Korea sets Gbps rate target
Lee highlighted two initiatives from the Korea Science and Information Technology Future Planning Department (MSIP), all aimed at heterogeneous cellular networks. Continuing the Giga Korea strategy launched in 2012, the new Giga program is a broadband-based mobile communication system based on mmW that can transmit and receive data rates of 1 Gbit/s.
Although still in the specification stage, the first project will use a base station with a honeycomb performance of 100 Gbit/s and an array antenna to transmit data to the mobile system prototype at a peak rate of 1.5 Gbits/s.
These cellular base stations need to be implemented on a virtual IT infrastructure and intelligently supervised by a central process management solution, such as a software-defined network (SDR). The second project includes a programmable hardware network controlled by dedicated hardware, Lee said.
Japan introduced Phantom Cell
High-level representatives of Japan's telecom giant NTT Docomo also stressed that small cellular base stations will play an important role in management-intensive high-speed networks. Fujio Watanabe, Director of Mobile Network Engineering and Development at Docomo InnovaTIons, introduced a multi-layered Phantom Cell solution that allows small honeycomb base stations to be placed on large honeycomb base stations.
"The combination of Massive MIMO and Phantom Cell technology is critical for 5G," said Watanable. "Massive MIMO, Phantom Cell and higher frequencies will achieve 100 times more capacity than today."
This concept distinguishes between the control layer and the user layer in the network for transmission between different cellular base stations in different frequency bands. The result is a seamless experience for users switching between different base stations while achieving "higher data rates, flexibility, cost and energy efficiency."
Docomo originally introduced the Phantom Cell concept in a white paper published in 2014, but did not further disclose details such as when to start testing.
Huawei looks at 5G and self-driving cars
In a discussion on the theme of '5G Embracing Vertical Industries', Huawei's wireless CTO Tong Wen highlighted the unknown features of 5G and said that cellular communications also have "many long not designed for next-generation networks." Tail (niche) effect."
Tong Wen pointed out that "the question is whether we can further divide it into RF or air intermediaries, so as to finally be able to customize the air intermediation part for vertical industries, because vertical industries have very special requirements on how to transmit data bits in the air. â€
The vertical industry needs an air RF interface that can process 12-bit sensor data at 3.75 kHz. Tong Wen believes that this data has been extended to mean 55 megapixels of sensor reading per hour. This RF interface must be extremely reliable, with a communication delay of less than 1ms with the next-generation industrial 5G small cellular base station, enabling critical applications such as autonomous vehicles.
These small honeycomb base stations must operate in an authorized frequency band, covering a few hundred meters, and achieve high quality indoor local communication. Huawei is also using the licensed band to test industrial-grade large cellular abutments with over-the-air (OTA) performance with 100ms delay. The company is also developing new air-to-interface technologies, such as sparse-coded multiple access and polarity coding, to further speed up processing.
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