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1. (WO2018202117) KEY UPDATING METHOD AND DEVICE

Pub. No.:    WO/2018/202117    International Application No.:    PCT/CN2018/085568
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat May 05 01:59:59 CEST 2018
IPC: H04W 12/04
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: DAI, Mingzeng
戴明增
PENG, Wenjie
彭文杰
LIU, Jing
刘菁
GUO, Yi
郭轶
ZENG, Qinghai
曾清海
Title: KEY UPDATING METHOD AND DEVICE
Abstract:
The present application provides a key updating method and device, the method comprising: acquiring by a user equipment (UE) first indication information, the first indication information comprising information about key update, and the key being used for communication between the UE and a secondary base station; and completing the key update or keeping the key unchanged by the UE according to the first indication information. The UE can be flexibly controlled by means of the first indication information to complete the key update or keep the key unchanged; in particular when the key is not required to be updated, the UE does not need to establish a PDCP layer, therefore, service will not be interrupted and service quality will be guaranteed.