Method and apparatus for facilitating handover to the Generic Access Network WCDMA from the public land mobile network access

摘要

I propose a method and apparatus to facilitate the handover Generic Access Network to (GAN) cell from 3G WCDMA UTRAN. In preparation for the handover, the mobile station measures the level of the signal transmitted from the adjacent cell in accordance with an instruction from the RNC. In WCDMA UTRAN, to request the network to be created a time gap may perform measurements at frequencies that the mobile station is different from the measurement of cells with a frequency number different from the serving cell that is inter-frequency cell (compressed mode). Do not send the frequency number that has been allocated to the own cell GAN ​​cell, which together with the identifier, the number is used to identify the GAN cell between the RNC and the MS. In order to be able GAN cell has always frequency the same number as the adjacent UTRAN cell, we propose a change registration procedure. The change registration procedure, it is used to transmit the GAN controller frequency numbers used in the UTRAN cell the current MS, GAN controller selects the frequency to determine an identifier corresponding necessary . The identifier may be obtained from a small mapping table that maps the frequency or each frequency group identifier also may be the same for all cells GAN.