LG U+ has completed Dual-Connectivity technology verification during a 5G field test in Seoul in association with Huawei.

Huawei said Dual-Connectivity technology provides a 20Gbps downlink rate by linking a 3.5GHz base station with a 28GHz base station.

During the field verification of 5G Dual-Connectivity technology, Huawei connected the terminal simultaneously to 3.5GHz and 28GHz base stations, receiving data from two base stations, providing significant increase in single-user rate.

Huawei conducted the verification through cooperation between two base stations at a LG U+ 5G test base in Seoul. Huawei combined the downlink data from both the 3.5GHz base station and the 28GHz base station to provide a rate of around 20Gbps.

Huawei said dual-connectivity allows multiple base stations to transmit data simultaneously or alternately to a user so that they can seamlessly communicate with other users when moving between base stations.

Dual-Connectivity technology is suitable for use between 5G 3.5GHz base stations and 28GHz base stations, and can also be used between 4G and 5G base stations.

Previously, LG U+ has used a laboratory environment to verify Dual-Connectivity technology between 4G base stations. This time LG U+ and Huawei completed the verification between 5G base stations, and also set up a foundation for future 4G-5G Dual-Connectivity in a 4G-5G heterogeneous network.

Kim Dae Hee, managing director of LG U+ 5G Strategy, said: “By demonstrating Dual-Connectivity technology, which will play a key role in multi-operation of 4G and 5G wireless base stations, we will develop various next-generation technologies to provide a 5G service.”