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Low Latency, Low Loss, and Scalable Throughput (L4S) Internet Service: Architecture (RFC 9330, January 2023)

Solving the Cable TV Infrastructure Downstream Transmitter Challenge Driven by demand for faster internet connectivity, the cable TV industry has developed new network architectures for the delivery of multigigabit services to subscribers. This fiber deep approach, using a remote PHY device (RPD), moves critical hardware closer to the users by using digital fiber. This is comparable with a remote radio head in wireless (cellular) networks and while this saves space and reduces heat dissipation in the headend, it creates new design challenges for remote equipment. Although lower in absolute fr...