The invention belongs to the technical field of communication, and provides an LTE (Long Term Evolution)
cell searching method and device, and the method comprises the steps: generating a CRS (
Cell Reference
Signal) sequence according to a PCI (
Peripheral Component Interconnect) defined by an LTE communication
system; the method comprises the following steps: extracting a
time domain signal from a received
signal with a time slot length, sampling the
time domain signal at equal intervals, and converting the sampled signal into a
frequency domain signal; for the CRS sequence corresponding to each PCI, extracting
subcarrier data from the
frequency domain signal, and performing correlation operation on the
subcarrier data and the target CRS sequence to obtain a correlation value of the current PCI; traversing all PCIs to obtain a plurality of correlation values; and determining the maximum value in the plurality of correlation values as a target PCI (
Peripheral Component Interconnect), and performing
cell search according to the target PCI. According to the method provided by the invention, the
cell search process can be completed in a faster and shorter period by using the cell reference signal, and only one
time sequence data needs to be stored, so that the
cell search overhead is reduced, and the
cell search efficiency is improved.