Nokia, China Mobile (CMCC) and MediaTek have announced a record speed in a test of the world's first 3 Components (3CC) Carrier Aggregation (CA) technology in Shanghai. The converged 700 MHz/2.6 GHz network reached a peak downlink speed rate of 2.94 Gbps. The trial used Nokia's AirScale 5G baseband and MediaTek’s Dimensity 9000 5G mobile platform on CMCC's network.
Nokia said it is the first time the n28 (700MHz band; 30MHz) and n41 (2.6GHz band; 100+60MHz) frequency bands have been successfully combined to reach 190 MHz bandwidth (n28 + n41) with carrier aggregation technology.
This will enable communication service providers to provide higher throughputs and better coverage, such as superior mobile broadband services and HD video, said Nokia. CA uses Primary Cell Switch functionality, combining frequency bands for superior network capacity by maximising the spectral efficiency of 5G networks. This leads to faster data speeds, increased coverage area, and better indoor performance. The test activities will continue, using CMCC’s network in Shanghai.
The combination of 5G FDD and TDD bands, supplemented by carrier aggregation, augment the advantages of spectrum synergy, cutting the cost of network construction and improving network coverage and service to users.
Nokia has been a partner for over 20 years of CMCC, which is expanding its network with the convergence of the 700 MHz and 2.6 GHz bands.
S Pan, general manager for wireless communication technology at MediaTek, said the cooperation demonstrates the technical advantages of DL 3CC CA using FDD+TDD. Pan added that smartphones powered by the new Dimensity 9000 flagship 5G mobile platform, and forthcoming Dimensity 5G mobile platforms, will benefit from this 5G connectivity feature.
