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5G NR - RACH学习笔记1 - Overview_5g rach周期160

作者：tf789 | 2024-01-30 18:38:39

5g rach周期160

RACH主要两个目的：

- 上行同步(Timing Advance)

- 接入到基站(建立RRC连接)

RACH的触发情形：

- Initial RRC connection setup

- RRC connection re-establishment

- DL or UL data arrival during RRC_CONNECTED when UL synchronisation status is "non-synchronised"

- Transition from RRC_INACTIVE

- To establish time alignment at SCell addition

- Request for Other SI

- Beam failure recovery

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