A technical guide to 6G — sub-THz spectrum and its range limitations, integrated sensing and communication (ISAC), and the architectural move from a centrally optimized RAN to a distributed, AI-native network that reasons about itself in real time.
Sub-terahertz spectrum offers an order of magnitude more bandwidth than today's mmWave, at the cost of a signal that barely survives a wall or a rain shower. 6G answers that trade-off with integrated sensing and communication — turning the radio network itself into a sensor — and with distributed intelligence that predicts and routes around blockage before it happens.