Multi-RAT band scan

摘要

This disclosure relates to multi-RAT band scanning. According to one embodiment, a wireless user equipment (UE) device may perform a power scan of a frequency band. It may be determined whether or not to attempt system acquisition according to each of multiple possible radio access technologies (RATs) at east of multiple frequencies of the frequency band based on the power scan, and system acquisition may be attempted at selected RAT and frequency combinations. Results of the system acquisition attempts may be provided to a system selection module.

主权项

1. A wireless user equipment (UE) device, comprising:
a radio; and a processing element; wherein the radio and the processing element are configured to:
perform a power scan of a frequency band on which wireless communication using any of two or more radio access technologies (RATs) is supported by the UE;determine whether or not to attempt system acquisition according to each of the two or more RATs at each of a plurality of frequencies of the frequency band, based at least in part on the power scan of the frequency band, wherein determining whether or not to attempt system acquisition comprises comparing spectral shape characteristics of signals measured at the frequencies with spectral shape profiles for each of the at least two RATs, wherein it is determined that a cell is deployed at the frequency according to a RAT if the spectral shape characteristics of signals measured at the frequency fit a spectral shape profile for the RAT, wherein the spectral shape characteristics of signals measured at a frequency comprise signal bandwidth from a minimum frequency with signal power within a power threshold of signal power at a center frequency of the frequency to a maximum frequency with signal power within the power threshold of signal power at the center frequency of the frequency;attempt system acquisition at selected RAT and frequency combinations based on said determining, wherein attempting system acquisition comprises attempting to acquire system information identifying a system communicating at the selected frequency according to the selected RAT; andprovide results of attempting system acquisition at the selected RAT and frequency combinations to a system selection module.