JIANG, Yinqing,CHEN, Xiaoyan,LIU, Xiaojian,SHEN, Li
申请号：
EP20140898271
公开号：
EP3139661(A4)
申请日:
2014.07.22
申请国别(地区):
欧洲专利局
年份:
2017
代理人:
摘要：
Embodiments of the present invention relate to the field of wireless communications technologies, and provide user equipment and a switching method. The method specifically includes: when user equipment is in idle mode, acquiring a 2G/3G base station candidate set; when initiating a voice service, sending, by the user equipment, a CSFB request message to an LTE base station; receiving, by the user equipment, a standard and a frequency of a target 2G/3G base station that are sent by the LTE base station to the user equipment; determining, by the user equipment according to the standard and the frequency of the target 2G/3G base station, whether the 2G/3G base station candidate set includes the target 2G/3G base station; and if the 2G/3G base station candidate set includes the target 2G/3G base station, switching, by the user equipment, from the LTE base station to the target 2G/3G base station according to the standard and the frequency of the target 2G/3G base station. It is determined that a target 2G/3G bas
