Patent ID: 11901926
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of controlling gain of an amplifier in a receiver operating in a cellular communication system, the receiver being currently tuned to a current carrier frequency and being requested to tune to a target carrier frequency, the method comprising:
selecting and then performing an automatic gain control algorithm from among a plurality of automatic gain control algorithms that includes a first automatic gain control algorithm and a second automatic gain control algorithm that are different from one another, wherein the selecting and then performing comprises:
making a determination that indicates whether the current carrier frequency and the target carrier frequency are or are not within a downlink system bandwidth of a same cell of the cellular communication system;
in response to a determination that the current carrier frequency and the target carrier frequency are not within the downlink system bandwidth of the same cell of the cellular communication system, performing the first automatic gain control algorithm to produce a target gain setting;
in response to a determination that the current carrier frequency and the target carrier frequency are within the downlink system bandwidth of the same cell of the cellular communication system, performing the second automatic gain control algorithm to produce the target gain setting;

and
using the target gain setting to initially control gain of the amplifier.