In LTE and NR, the user equipment initiates a recovery procedure when a radio link failure (RLF) is declared. A shorter RLF timer T312 is introduced to speed up the recovery from an RLF and lower the outage time during a handover. However, T312 cannot remove the outage time completely and guarantee a successful recovery. In this letter, an event-based faster RLF trigger scheme is proposed to remedy the shortcomings of T312. The simulation results show that the proposed scheme can almost fully remove the outage time and reduce the interruption time caused by the recovery procedure, outperforming T312.

中文翻译：

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在切换期间更快地从无线电链路故障中恢复

在 LTE 和 NR 中，用户设备在宣布无线链路故障 (RLF) 时启动恢复过程。引入较短的 RLF 计时器 T312 以加快从 RLF 的恢复并降低切换期间的中断时间。但是，T312 不能完全消除中断时间并保证成功恢复。在这封信中，提出了一种基于事件的快速RLF触发方案来弥补T312的缺点。仿真结果表明，所提方案几乎可以完全去除中断时间，减少恢复过程造成的中断时间，性能优于T312。