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1. (WO2018201457) HANDLING OF INTERMITTENT DISCONNECTION IN A MILLIMETER WAVE (MMW) SYSTEM

Pub. No.:    WO/2018/201457    International Application No.:    PCT/CN2017/083252
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat May 06 01:59:59 CEST 2017
IPC: H04W 16/28
H04W 24/04
Applicants: MEDIATEK SINGAPORE PTE. LTD.
ZHANG, Yuanyuan
YU, Chia-Hao
JHENG, Yu-Syuan
Inventors: ZHANG, Yuanyuan
YU, Chia-Hao
JHENG, Yu-Syuan
Title: HANDLING OF INTERMITTENT DISCONNECTION IN A MILLIMETER WAVE (MMW) SYSTEM
Abstract:
Apparatus and methods are provided to handle the intermittent disconnections in an mmW system. In one novel aspect, the beam failure is determined upon detection of one or more failure conditions. In one embodiment, the UE further considers potential recoveries to avoid frequent triggering of the beam failure condition. In another novel aspect, the UE performs one or more recovery procedures based on one or more recovery conditions. In one embodiment, the UE performs the initial alignment procedure to recover the connection. In another embodiment, the UE performs the beam-recovery request procedure before triggers the initial alignment procedure. In one embodiment, timers are used to supervise the recovery procedures. In another embodiment, macro-assisted procedures are used for the beam-recovery request procedure. In yet another novel aspect, the UE performs reestablishment of a new connection at the upper layer upon receiving the beam failure indicator.