Patent ID: 9313724
Filing Date: 2016-04-12
CPC Classification: H04W

Claim Text:
1. A method for acquiring a cell identifier by a source cell in a radio communication system, the method comprising: receiving information about a new cell from a user equipment (UE) in the source cell; acquiring an evolved universal terrestrial radio access (EUTRA) cell global identifier (ECGI) of the new cell from the UE, if it is determined based on the information about the new cell that there is no neighbor relationship with the new cell; determining whether a public land mobile network (PLMN) identifier (ID) (PLMN ID) in the ECGI is included in a mapping table between a primary PLMN ID and a shared PLMN ID; acquiring an X2 internet protocol (IP) address of the new cell from an evolved packet core (EPC) according to the determination results; and discarding the information about the new cell if the PLMN ID in the ECGI is not included in the mapping table.