Patent ID: 8660570
Filing Date: 2014-02-25
Classification: H04W

Abstract:
1. A PHYSICAL CELL ID (PCI) allocation method for allocating a PCI by a target base station to a target cell belonging to the target base station, comprising: obtaining, by a target base station, a usable PCI list sent by an Operations And Maintenance (OAM) function entity; obtaining, by the target base station, E-UTRA Absolute Radio Frequency Channel Number (EARFCN) information of neighbour cells of serving cells via an X2 interface message; and removing, by the target base station, limited PCIs of the target cell from the usable PCI list to obtain a selectable PCI set according to the obtained the EARFCN information of the neighbour cells of the serving cells; wherein the removing, by the target base station, limited PCIs of the target cell from the usable PCI list comprises: obtaining, by the target base station, a first reference PCI set in a predefined manner, wherein cell EARFCN information in the first reference PCI set is different from that of the target cell of the target base station; forming, by the target base station, a second reference PCI set based on the intersection of the usable PCI list and the first reference PCI set; and randomly selecting, by the target base station, a PCI from the selectable PCI set as the PCI of the target cell, or randomly selecting, by the target base station, a PCI from the second reference PCI set as the PCI of the target cell if the selectable PCI set is empty.