It is to be understood that the technical solutions of the embodiments of the disclosure may be applied to various communication systems, such as, a global system of mobile communication (GSM), a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a general packet radio service (GPRS), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), a universal mobile telecommunication system (UMTS), a worldwide interoperability for microwave access (WiMAX) communication system, a wireless local area network (WLAN) or a future fifth. Generation (5G) system.
In the embodiments of the disclosure, a terminal device may be called user equipment (UE), a terminal device, a mobile station (MS), a mobile terminal, a terminal device in the future 5G network or the like. The terminal device may communicate with one or more core networks through a radio access network (RAN). For example, a terminal may be a mobile phone (or called a cellular phone) and a computer having a mobile terminal. For example, the terminal may also be a portable mobile device, a pocket-size mobile device, a handheld mobile device, a computer-embedded mobile device or a vehicle-mounted mobile device, and exchange voice and/or data with the radio access network.