Wireless communication device capable of efficient network search

摘要

A wireless communication device is disclosed that is capable of performing efficient network searching. Specifically, by utilizing its location information and accessing stored cell information, the device can streamline searching. Further, if a full search is to be performed, the device receives information from multiple radio access technologies together, and processes the received information digitally in order to search the individual radio access technologies. In addition, the device is capable of performing efficient 4G searches by setting its RF module to capture information of multiple raster points simultaneously within a search band, and shifting the search band so as not to duplicatively search raster points.

主权项

1. A wireless communication device capable of communicating within a Long-Term Evolution (LTE) wireless communication environment, the LTE wireless communication environment including a plurality of raster points uniformly distributed therein, the wireless communication device comprising:
a radio module configured to receive signals from the LTE wireless communication environment; and a controller module configured to set a center frequency and a bandwidth of the radio module to define a search band, wherein the bandwidth of the search band is sufficiently large to encompass two or more adjacent raster points of the plurality of raster points, and to detect a presence or absence of a base station within the search band, wherein the controller module is configured to determine a raster point within the search band corresponding to a center frequency of the detected base station based on an integer frequency offset relative to the set center frequency of the radio module when the controller module detects the presence of the base station within the search band based on a primary synchronization signal associated with the base station, and wherein after determining the raster point corresponding to the center frequency of the detected base station, the controller module is configured to shift the center frequency of the radio module by a bandwidth shift frequency substantially equal to a bandwidth of the base station plus a difference between a previous center frequency of the radio module and the detected center frequency of the base station.