Mobile wireless terminal and base station search method

摘要

According to one embodiment, a mobile wireless terminal, which makes a wireless communication with a base station accommodated in a network, includes a receiver, a communication module, and a controller. The receiver is configured to receive and frequency-convert a wireless signal transmitted from the base station, and to detect a beacon signal transmitted from the base station based on a reception signal obtained by the frequency conversion. The communication module is configured to receive a wireless signal transmitted from the base station, to acquire identification information of the base station by decoding a reception signal obtained from the wireless signal, and to communicate with the base station. The controller is configured to activate the communication module in accordance with a reception result of the beacon signal by the receiver, and to control the communication module to acquire identification information from the base station.

主权项

1. A mobile wireless terminal configured to wirelessly communicate with a base station in a network, the wireless terminal comprising:
a first receiver circuit configured to receive a wireless signal from the base station, to convert the wireless signal to a frequency domain signal, and to detect a beacon signal from the base station based on the frequency domain signal; a second receiver circuit configured to receive the wireless signal from the base station, to decode the frequency domain signal and to extract identification information of the base station in the frequency domain signal, and to communicate with the base station; and a controller circuit configured to activate the second receiver circuit in accordance with the beacon signal, and to control the second receiver circuit to extract identification information from the base station; wherein the first receiver circuit is further configured to: generate a reception profile for detecting signal reception timings within a search window of a predetermined period; detect a beacon signal from a profile generated based on a plurality of reception profiles; detect reception timings and reception levels of frequency domain signals within the search window corresponding to the predetermined period; generate a reception profile which determines a plurality of continuous positions as the reception timing of one beacon signal for detecting a reception timing having a reception level not less than a pre-set threshold; and signals that exceed a threshold are detected as beacon signals with one reception profile generated based on a plurality of reception profiles received at the same timings.