RFID System and method for resolving RFID tags collision

To identify the various tags that happened is a conflict between a response signal at the same time, and reduce the readout time (Reading Time), the inventors identified the reader, tag, radio frequency identification (RFID) systems, and radio wave method is disclosed. According to the invention, in a radio frequency identification (RFID) system comprising two or more tag reader and a unique ID of the given each reader, the tags to identify the respective identification code generated on the basis of the respective unique ID after storing, comparing codes, each by one to generate the query signal inquiring whether or not the presence of the tag transmitted to the tag, and tags corresponding to the received query signal generating an identification code based on the unique ID after the reader transmission, with the reader, after receiving the identification code, to compare each of the stored comparison code with the identification code, the tag identifies the response. RFID, an identification tag