Receiver and a method therein

摘要

A receiver 10 and method in the receiver for cell search to find an actual base station having a carrier frequency in a radio communications network 1. The receiver detects a first signal representative of a base station 12, 14, 16, 18 by performing slot synchronisation, frame synchronization, cell identification, measurement of a signal quality of the first signal and comparison of the measured signal quality with a first threshold value. When a first signal having a signal quality that is greater than the first threshold value has been detected, the receiver searches for at least one second signal representative of a base station for at least one frequency offset comprised in a set of offsets S3. Further, when one or more second signals are detected, the receiver selects the signal with the highest signal quality, and detects a broadcast radio channel representative of a base station for the selected signal.

主权项

1. A method in a receiver for cell search to find an actual base station having a carrier frequency in a radio communications network, the method comprising:
detecting a first signal representative of a base station by performing:
slot synchronization;frame synchronization;cell identification; and measuring a signal quality of the first signal and comparing the measured signal quality with a first threshold value; when it is detected that the first signal has a signal quality that is greater than the first threshold value, searching for at least one second signal representative of a base station for at least one frequency offset comprised in a set of offsets, when one or more second signals are detected, selecting a signal from the first and the one or more second signals with the highest signal quality, and detecting a broadcast radio channel representative of a base station for the signal selected from the first and the one or more second signals.