Method supporting user equipment (UE) handover

Abstract

The invention discloses a method supporting user equipment (UE) handover. Public land mobile networks (PLMN) broadcasted in a target community are filtered through the UE, and a proper PLMN in the filtered PLMNs in a source base station is selected for the UE to finish the handover process. Or a content service gateway (CSG) which the UE can be access to is learned in the source base station, and an identification data (ID) list of all PLMNs broadcasted in the target community, a registered (r) PLMN and an equivalent (e) PLMN of the UE are learned, and therefore the proper PLMN for the UE is selected to finish the handover process. Or after learning the ID list of all the PLMNs broadcasted in the target community, the ID list of the PLMN where the ID in all the PLMNs broadcasted in the target community is the r-PLMN or the e-PLMN of the UE is informed to a multiple media expansion (MME). The PLMN for the UE is selected by the MME to finish the handover process. Or after learning the ID list of all the PLMNs broadcasted in the target community at present through the source base station, the MME is used to select the PLMNs, and the source base station is used to select the PLMN serving the UE to finish the handover process. Through utilization of the method supporting UE handover, failures in the handover process can be avoided, and continuity of businesses is guaranteed.

Description

technical field [0001] The invention relates to the field of mobile communication systems, in particular to a method for supporting user equipment (UE) switching. Background technique [0002] In a mobile communication system, in order to provide better business services to a specific UE group, it is often necessary to form multiple radio resource management entities into a closed subscriber group (CSG) for a specific UE group, for example, within a company or school All UEs are a specific UE group, and multiple radio resource management entities form a CSG for this UE group to provide dedicated access services. [0003] It is common in mobile communication systems that multiple radio resource management entities form a CSG for a specific UE group. In order to illustrate this situation more clearly, the long-term evolution (LTE) system of System Architecture Evolution (SAE) is used below Take this as an example. [0004] figure 1 is a schematic structural diagram of an ex...

AI Technical Summary

Problems solved by technology

[0039] The source base station can select a hybrid cell for the UE under the PLMN of which the UE is a member. However, due to the above problems, the source base station may select a hybrid cell for the UE under the PLMN of which the UE is not a member, so that the UE cannot enjoy more Good quality of service and billing policy

[0040] Further, even if the source base station knows the PLMNs broadcast by the target base station cell, the source base station needs to be in the PLMN Select the PLMN that the new UE registers in {A,C}. However, the source base station does not know which PLMN the UE is a member of. If the source base station chooses PLMN C, the handover will fail

In the case where the target base station cell is a hybrid cell and supports multiple PLMNs, the source base station can choose a PLMN at will. As a result, the UE can access a PLMN of which it is a member, but the source base station switches the UE to its own PLMN. The PLMN of the member, so that the UE cannot enjoy high-quality service quality and charging policy

Images