Patent ID: 8995315
Filing Date: 2015-03-31
Classification: H04W

Abstract:
1. A method of calculating a normalized received signal level (NRSL) value in a mobile communication system that supports at least a packet idle mode, a packet transfer mode, a dedicated mode or a dual transfer mode, the method comprising: obtaining, by a mobile station (MS), a first NRSL value in the dedicated mode; transitioning, by the MS, from the dedicated mode to the packet idle mode; calculating, by the MS in the packet idle mode, a second NRSL value for use in the packet idle mode, the second NRSL value calculated using a mean value of a received signal level of four normal bursts that compose a radio block and an output power reduction value of a base transceiver station (BTS) relative to an output power used for a broadcast control channel; and filtering, by the MS in the packet idle mode, the second NRSL value with a running average filter using a forgetting factor, a first iteration index, and the first NRSL value, wherein the first iteration index continues from a second iteration index that is obtained by the MS in the dedicated mode, and wherein the dedicated mode is a circuit switched mode and the packet transfer mode is a packet switched mode.