Page 44 - SAMENA Trends - Jan-Mar 2024

REGIONAL & MEMBERS UPDATES SAMENA TRENDS

resources and wide coverage, says Fang. and performance criteria, Huawei believes three-band RF module provides three times
For improved uplink performance, FDD operators want to benefit from simplified the capacity of 4T4R with 7dB coverage and
can support the symmetrical configuration and green deployments in the . This can 30% less energy consumption, according
required for 5.5G. Delivering 5-10Gbps in include ensuring that new frequency bands to Huawei. A single massive MIMO module
the downlink means aggregating three or are added without increasing the number combines support for the 1.8 GHz, 2.1 GHz,
even five component carriers (CCs), but of base stations or power consumption, and 2.6 GHz bands with compact size (995
the industry already has a 5CC chip that and that OPEX is continuously reduced. mm high and 499 mm wide) and a reduced
will support the FDD bands. Multi-band To address these challenges, Huawei has wind load, meaning that with full-band
serving cell (MBSC) technology as defined developed its GigaGreen Radio platform, beamforming, operators can upgrade their
in 3GPP Release 18 will provide in future which comprises a single RAN coupled capacity by four times in the downlink and
for multiple aggregated bands to build with FDD massive MIMO designed to five times in the uplink, from 5G 4T4R to 5G
a 100 MHz FDD bandwidth. As well as facilitate efficient deployment of 100 MHz MIMO.
achieving sub-3 GHz spectral efficiency FDD bandwidth. The GigaGreen FDD 8T8R

Huawei and China Telecom Anhui Complete China’s First Commercial UC
Verification of 1.8+2.1 GHz 8T8R RRU on High-Speed Railway

The Anhui branch of China Telecom 5G or 4G. As key national infrastructure, China Telecom Anhui chose the 1.8 GHz
Corporation Limited (China Telecom high-speed railways play a critical role in + 2.1 GHz dual-band 8T8R RRU solution to
Anhui) and Huawei completed China’s first the development of the national economy. build a 5G network for the Tongling section
commercial use case verification of 1.8 Anhui has a large network of high-speed of the Hefei-Fuzhou High-Speed Railway.
GHz + 2.1 GHz dual-band 8T8R RRUs in the railways and therefore is a key target The solution has the following benefits:
Tongling section of the Hefei-Fuzhou High- province for wireless network construction. The solution employs FDD 8T8R and other
Speed Railway, as part of their efforts to Construction of Anhui high-speed railway cutting-edge technologies such as high-
build premium 5G networks for high-speed networks faces four major challenges. First, gain array, precise beam sweeping, and
railways. With the deployment of 5G on 2.1 fast-moving trains cause signal frequency high-resolution MU pairing. Compared
GHz and 4G on 1.8 GHz, 5G and 4G networks shift, which affects network performance. with conventional 4T4R base stations,
are on a single device, achieving dual-band Second, carriages and tunnels block the the solution achieves wider coverage,
and dual-RAT coverage. Test results show propagation of signals. Third, the coverage better user experience, and lower power
that compared with conventional 4T, 8T8R of each base station only lasts for a few consumption through 3D multi-antenna
improves 5G and 4G coverage by 5 dB and seconds. Fourth, the complex terrain and beamforming. The solution uses the
2.6 dB, respectively, increases average 5G tunnels in mountainous areas in Anhui industry’s only true-wideband power
downlink and uplink rates by 18% and 43%, make it difficult to plan networks. This amplifier to implement millisecond-level
respectively, and boosts the total traffic is very much the case with the Tongling power sharing between the 1.8 GHz and
along the tested route by 42%. All these section, which has high requirements on 2.1 GHz frequency bands, thus effectively
mean that users on high-speed railways network coverage due to its location on a avoiding power wastage and improving
can enjoy optimal network experience viaduct and the numerous tunnels along user experience and performance. The
regardless of whether they are accessing the section. To address these challenges, solution achieves low-carbon network
deployment by enabling 4G and 5G
networks to be built at the same site
to improve network engineering while
reducing energy consumption. After the
solution was deployed, the performance of
5G and 4G networks has been significantly
improved, allowing users on trains to enjoy
smooth entertainment services such as
live streaming, HD video, and New Calling,
as well as remote work and office services
such as video and voice conferencing.
Next, China Telecom Anhui plans to deepen
its exploration of advanced 5G high-speed
railway network technologies to find new
solutions that will further improve user
experience.

44 JANUARY-MARCH 2024