A reader for wirelessly receiving a signal from a tag, the signal having a portion on a first side, a portion on a second side and a synchronization sequence to be detected between the first and the second side, wherein the portion on the first side, the synchronization sequence and the portion on the second side are serially arranged with each other, has a processor. The processor is configured for storing the received signal, for detecting the synchronization sequence in the received signal, for calculating a transmission characteristic between the tag and the reader, using the portion of the received signal on the first side and for extracting a payload information from the portion of the received signal on the second side, using the calculated transmission characteristic.

A method for streaming sensor data from a set of radio-frequency identification (RFID) tags includes determining an initial communication approach to be performed with respect to each RFID tag. The method also includes managing access to the RFID tag by refining the initial communication approach based on records of successes and failures of the initial communication approach. A radio-frequency identification (RFID) system is also disclosed, the system comprising one or more processors and a memory system comprising one or more non-transitory computer-readable media storing instructions that, when executed by at least one of the one or more processors, causes the system to perform operations for streaming sensor data from one or more RFID tags to one or more RFID readers.

A method performed in a network control entity for enabling access to a wireless tag in a wireless communications network is provided. The wireless communications network includes two or more access points, APs. The network control entity configures a first AP to transmit a radio frequency signal in a first time period, and configures a second AP to receive, in the first time period, a radio signal reflected from the wireless tag using the transmitted radio frequency signal. A network control entity for enabling access to at least one wireless tag in a wireless communications network is also provided. Further, an access point AP and a method therein for enabling access to a wireless tag in a wireless communications network are also provided.

An RFID system includes multiple antennas and uses amplitude and phase information of the RFID signals received by each antenna to determine the position of RFID tags in the vicinity. More than one antenna can receive the RFID signals during a single read cycle, enabling the RFID system to operate more quickly than a system that energizes antennas separately.

A radio frequency identification communication method for collision reduction with low power consumption and radio frequency identification communication system using the same are provided in the present invention. The radio frequency identification communication method includes the steps of: setting different delay periods according to different RFID tags; in each preset time, enabling a RFID reader and detecting whether a RFID tag is on the RFID reader; detecting whether there is only one RFID tag on the RFID reader; when two or more RFID tags on the RFID reader are detected in a specific time slot, entering a suspend mode to stop providing RF power such that the RFID tags perform power on reset when the reader is enabled next time.

The present invention provides for a RFID tag assembly that is suitable for operation with at least one RFID reader assembly. The RFID tag assembly comprises, inter alia, an antenna member for transmitting and/or receiving an RFID signal, and at least one integrated circuit (1C) for processing the RFID signal and which is configured to communicate, alternatingly and sequentially in time, a first signal transmission and at least one second signal transmission, each defined by a plurality of predetermined signal transmission parameters, to the at least one RFI D reader assembly, utilising time-division multiplexing, wherein the at least one first signal transmission differs from the at least one second signal transmission in at least one of said plurality of predetermined signal transmission paameters.

Provided herein are systems and methods comprising two or more localization agents that are linked together by a linker. For example, provided herein are systems and methods for the placement of two or more linked localization devices within biological systems and the detection of such localization devices for targeted surgeries or other medical procedures. For example, provided herein are systems comprising one or more miniature detectable devices that are linked together, that are placed into a target location and activated by remote introduction of a magnetic field.

Systems and methods for operating a Radio Frequency Identification (“RFID”) tag. The methods comprise: monitoring a level of Radio Frequency (“RF”) energy being received by the RFID tag; performing operations by a circuit of the RFID tag to compare the level of RF energy in a given frequency band to a first threshold value; and transitioning an operational mode of the RFID tag from a first operational mode in which a receiver is disabled to a second operational mode in which the receiver is enabled, when the level of RF energy exceeds the first threshold value. The RFID tag is able to communicate with a remote tag reader when the RFID tag is in the second operational mode and not when the RFID tag is in the first operational mode.

A proximity smart card including a card body, a first integrated circuit, a second integrated circuit, and a display element is provided. The first integrated circuit is disposed on the card body. The first integrated circuit is configured to receive a request command from the card reader, and output a first response command to the card reader. The second integrated circuit is disposed on the card body. The second integrated circuit is configured to receive the request command from the card reader, and delay an output of a second response command to the card reader. The display element is disposed on the card body. The second integrated circuit transmits to-be-displayed information to the display element. The display element displays an image according to the to-be-displayed information. In addition, a method for operating a proximity smart card is also provided.

A method for interleaving time slots in a multi-antenna system for communication with RFID tags is described. An exemplary system has a first RFID interrogator and first and second antennas. The first and second antennas direct signals to and receive signals from respective first and second interrogation zones. A first interrogation signal is transmitted to the first antenna. A first acquire window for receiving a signal from a first RFID transponder is opened after the first interrogation signal. A second interrogation signal is transmitted to the second antenna after the first interrogation signal, and a second acquire window for receiving a signal from a second RFID transponder is opened after the second interrogation signal.