Overview

• T-Mobile became the first U.S. wireless provider to deploy the IETF’s L4S congestion-control standard at scale following its July 21 rollout on 5G Advanced.
• L4S flips the traditional reactive model by sending early congestion notifications that let devices adjust before lag and packet loss occur.
• Customers can access low-latency performance without upgrading devices or plans as coverage goes live in dozens of cities and continues expanding.
• Trials with Qualcomm and Ericsson in smart-glasses augmented reality and crowded-airport video calls demonstrated dramatic reductions in stutters and frozen frames.
• Remote driving tests by Vay in Las Vegas showed consistent sub-50-millisecond latency that made operators feel as if they were inside the vehicles.