Method for determining core network type in switching process, terminal equipment, access network equipment and core network equipment

Abstract

The invention provides a method for determining a core network type in a switching process, terminal equipment, access network equipment and core network equipment. In the cell switching process, thetarget access network equipment reports preferred core network type information through the terminal equipment to determine the core network type of the target cell, or the target access network equipment determines a core network type of the target cell through information interaction with the core network equipment, so that smooth cell switching is ensured, and the user experience is improved. The method comprises the following steps that: in a process of switching the terminal equipment from a source cell to a target cell, the terminal equipment transmits preferred core network type information for the target cell to source access network equipment, and the preferred core network type information is reference information for determining a core network type of the target cell.

Description

[0001] This application is the PCT international patent application PCT / CN2017 / 110714 with the filing date of November 13, 2017, which entered the Chinese national phase. Access network equipment and core network equipment" divisional application. technical field [0002] The present application relates to the communication field, and more specifically, relates to a method for determining a core network type during handover, a terminal device, an access network device and a core network device. Background technique [0003] In Long Term Evolution (LTE) and 5G communication systems, access network devices (such as base stations) of Evaluated Long Term Evolution (eLTE) can simultaneously access the Evolved Packet Core (Evolved Packet Core, EPC) and 5G core network (5G Core, 5GC), and when a terminal device switches to such a target cell that may be connected to a different type of core network, it must determine the type of core network before switching, because different core...

AI Technical Summary

Problems solved by technology

However, in the current cell handover process, for example, when a terminal device is handed over from an eLTE cell to an eLTE cell, or from an NR cell to an eLTE cell, neither the source base station nor the target base station knows that for this terminal device, it needs Which core network type (Core Network type, CNtype) to connect to, which in turn affects the cell handover experience

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