Patent ID: 7535846
Filing Date: 2009-05-19
Classification: H04W

Abstract:
1. A method for performing inter-RAT cell measurement in a dual-mode user equipment (UE) in a connected mode, which supports both GSM/GPRS (Global System for Mobile communication/General Packet Radio Service) RAT (Radio Access Technology) and UMTS (Universal Mobile Telecommunications System) RAT, the method comprising the steps of: (a) transmitting a measurement control message from a UTRAN (UMTS Terrestrial Radio Access Network) of the UMTS RAT to a URRC (UMTS Radio Resource Control) of a UMTS network layer in the UE; (b) upon receiving the measurement control message, sending, by the URRC, a measurement request for GSM cells to an RR/GRR (Radio Resource/GPRS Radio Resource) of a GSM/GPRS network layer; (c) activating, by the RRR/GRR, a GSM physical layer and sending a measurement request for the GSM cells to the GSM physical layer; (d) measuring, by the GSM physical layer, the GSM cells and reporting a measurement value to the RR/GRR; (e) reporting, by the RR/GRR, the measurement value for the GSM cells, received from the GSM physical layer, to the URRC; and (f) reporting, by the URRC, the received measurement value for the GSM cells to the UTRAN.