Patent ID: 8115603

Claim:
A method for identifying a plurality of moving multiple tags by using a plurality of Radio Frequency Identification (RFID) readers, comprising: a) grouping the multiple tags into a predetermined number of tag groups based on a number of the multiple tags; b) allocating the tag groups to the RFID readers respectively based on a number of the RFID readers and identification capability of each RFID reader; and c) identifying tags of each allocated tag group in each RFID reader, wherein the RFID readers sequentially operate according to an operation sequence, wherein the step c) includes the steps of: c1) determining whether a tag group acquired in the step b) needs to be re-grouped based on the number of unidentified tags among the multiple tags; c2) when re-grouping is needed, re-grouping the unidentified tags into groups having a predetermined number of tags; c3) respectively allocating the tag groups acquired from the re-grouping in the step c2) to RFID readers that are not operated yet among the plurality of RFID readers; and c4) identifying tags of the tag groups allocated in the step c3) sequentially according to the operation sequence in the RFID readers that are not operated yet.