Patent ID: 7902985
Filing Date: 2011-03-08
Classification: G06K

Abstract:
1. A method for radio frequency identification tracking comprising: transmitting a radio frequency identification signal between a first radio frequency identification reader and a first group of passive radio frequency identification tags, receiving at the first radio frequency identification reader a first data from the first group of passive radio frequency identification tags in response to the transmitting the radio frequency identification signal between the first radio frequency identification reader and the first group of passive radio frequency identification tags, transmitting the first data from the first radio frequency identification reader to a gateway radio frequency identification tag, wherein the gateway radio frequency identification tag comprises an integrated circuit chip, a radio frequency transmitter, a radio frequency receiver, a power supply, and a radio frequency antenna, receiving and storing the first data at the gateway radio frequency identification tag, transmitting a radio frequency identification signal between a second radio frequency identification reader and a second group of passive radio frequency identification tags, receiving at the second radio frequency identification reader a second data from the second group of passive radio frequency identification tags in response to the transmitting the radio frequency identification signal between the second radio frequency identification reader and the second group of passive radio frequency identification tags, transmitting the second data from the second radio frequency identification reader to the gateway radio frequency identification tag, receiving and storing the second data at the gateway radio frequency identification tag, transmitting to the gateway radio frequency identification tag a query from the first radio frequency identification reader requesting the second data, receiving the query at the gateway radio frequency identification tag, and transmitting the second data from the gateway radio frequency identification tag to the first radio frequency identification reader in response to the receiving the query.