Patent ID: 11930468
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A cell search method of a wireless communication device, the method comprising:
receiving a wireless signal comprising a plurality of frames;
generating a first cumulative value of sub-frames by accumulating first correlation values between reference signals and the sub-frames of a first frame of the plurality of frames on previous cumulative values for each sub-frame;
adjusting an effectiveness determination critical value according to a cumulative count of performing accumulation for each sub-frame; and
performing a cell search to detect an effective synchronization signal based on a peak value of the first cumulative values and the effectiveness determination critical value,
wherein, in the adjusting of the effectiveness determination critical value, the effectiveness determination critical value is adjusted to have a smaller value as the cumulative count increases,
wherein when the detect of the effective synchronization signal fails,
the cell search method further includes terminating the cell search in response to determining that a cumulative count corresponding to the first cumulative values is equal to or greater than a maximum cumulative count, or
the cell search method further includes performing an operation of detecting the effective synchronization signal with respect to at least one frame subsequent to the first frame in response to determining that the cumulative count is less than the maximum cumulative count,
wherein the maximum cumulative count is determined based on an electric field state of the wireless communication device.