Ultra wideband radio frequency identification techniques
AssigneeNokia Corporation
InventorJukka Reunamäki
Life of this patent
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Abstract
Ultra wideband (UWB) techniques are applied to radio frequency identification (RFID). For instance, a reader generates a UWB IR interrogation signal, and receives a UWB IR reply signal from an RFID tag in response to the interrogation signal. In addition, the reader may generate from the UWB IR reply signal a baseband response sequence. This sequence includes at least a tag identifier. A reader may store at least a tag identifier. Upon receipt of a UWB IR interrogation signal, the tag obtains a plurality of clock pulses from the UWB IR interrogation signal. Based on the plurality of clock pulses, the reader transmits at least the tag identifier in a UWB IR response signal.
Claims21
A method, comprising:
- (a) generating at a reader module, a wireless interrogation signal for communicating with a radio frequency identification tag;
- (b) generating a radio signal for powering the radio frequency tag for communication, wherein the radio signal is generated by a radio module different from the reader module;
- and
- (c) receiving a reply signal from the radio frequency tag in response to the interrogation signal.
An apparatus, comprising:
- a first portion configured to generate a wireless interrogation signal for communicating with a radio frequency tag, the radio frequency tag receiving operational power from a radio signal that is different from the interrogation signal;
- and
- a second portion configured to receive a reply signal from the radio frequency tag in response to the interrogation signal.
A computer program product comprising a computer useable medium having computer program logic recorded thereon for enabling a processor in a computer system, the computer program logic comprising:
- program code for enabling the processor to cause generation of a wireless interrogation signal for communicating with a radio frequency tag, the radio frequency tag tag receiving operational power from a radio signal that is different from the interrogation signal;
- and
- program code for enabling the processor to cause reception of a reply signal from the radio frequency tag in response to the interrogation signal.
A system in an apparatus, comprising:
- a radio frequency interrogation module configured to generate a wireless interrogation signal for communicating with a radio frequency tag;
- and
- a radio module different from the radio frequency interrogation module, the radio module configured to generate a radio signal for powering the radio frequency tag for communication.
A method, comprising:
- (a) storing information in a radio frequency tag device;
- (b) receiving a wireless interrogation signal at the radio frequency tag device;
- (c) obtaining operational power for powering the radio frequency tag device from a received radio signal other than the interrogation signal;
- and
- (d) transmitting at least a portion of the stored information in a response to the received interrogation and radio signals.
A radio frequency identification tag device, comprising:
- a memory configured to store information;
- a communications module configured to receive a wireless interrogation signal;
- and
- a power module configured to obtain operational power for powering the radio frequency tag device from a received radio signal other than the interrogation signal;
- wherein the communications module is further configured to transmit at least a portion of the stored information in a response signal in response to the received interrogation and radio signals.
A computer program product comprising a computer useable medium having computer program logic recorded thereon for enabling a processor to process interrogation signals, the computer program logic comprising:
- program code for enabling the processor to store information in a radio frequency tag device;
- program code for enabling the processor to receive a wireless interrogation signal at the radio frequency tag device;
- program code for enabling the processor to cause obtaining operational power for powering the radio frequency tag device from a received radio signal other than the interrogation signal;
- and
- program code for enabling the processor to cause transmission of at least a portion of the stored information in response to the received interrogation and radio signals.
Dependencies are inferred from the claim text.