DOCOMO, Fujitsu and NEC claim 'world first' CA using 5G frequencies on multi-vendor RAN

摘要

NTT DOCOMO, Fujitsu and NEC claim to have achieved the 'world's first carrier aggregation [CA] using 5G frequency bands in a multi-vendor Radio Access Network (RAN)'. In a joint press release, the companies said that interoperability with multi-vendor 5G base station equipment was achieved 'in compliance with specifications established by the Open Radio Access Network (O-RAN) Alliance'. DOCOMO confirmed that CA used the 3.7GHz and 4.5GHz bands designated for 5G networks, and noted that by bundling LTE bands, downlink speeds of 4.2Gbps 'will be achievable, enabling ultra-fast data transmission'.