Abstract: A method includes performing background data collection in a first region at a first time, the performing background data collection in the first region includes determining a first set of time-averaged reference signal received power (RSRP) data for each beam identification (ID) number and a first set of standard deviation data of the time-averaged RSRP for each beam ID number based on a first set of RSRP data. The method further includes performing RSRP data collection in the first region for a second time and performing RSRP data processing for a first database, and performing k-nearest neighbor (kNN) crowd counting based on at least the RSRP data processing. The performing kNN crowd counting includes estimating a number of people in the first region based on at least a second set of normalized statistical features.

Abstract: A document processor includes a reception unit that receives document data, the document data being broadcasted to another document processor, a data storage unit that stores the document data received by the reception unit, a document data output unit that outputs the document data stored in the data storage unit, an instruction accepting unit that accepts an instruction to execute output based on the document data stored in the data storage unit, a controller that controls the document data output unit to output the document data stored in the data storage unit upon reception of an output instruction from the instruction accepting unit, and a notifying unit that notifies another document processor which stores the document data being broadcasted to the another document processor of an output executed based on the document data.