Title:
RFID SYSTEM WITH PACKETIZED DATA STORAGE IN A MOBILE ENVIRONMENT
Document Type and Number:
WIPO Patent Application WO2005001745
Kind Code:
A3
Abstract:
An RFID system (100) includes transponders (106) transmitting (150) or receiving (152) packetized data in standard form in lieu of custom format for applications executable in a mobile device (102) or network. Tag data may be packetized in any of several standard formats. Each format includes a layer to identify packet format. In one embodiment, a tag contains a standard UDP header with a checksum and payload data. The application opens a socket to listen to UDP connections. The device transmits a RF signal activating tags which transmit UDP packets to a RFID reader in the device. The packets are passed to an IP stack (138) which strips away the UDP header and validity of the checksum verified. If verified, the device transmits the payload to an application running in the device (102) or a network (108), otherwise, the IP stack (138) notifies the tag the transmission failed and requests re-transmissions which are repeated until a successful transmission occurs.
Inventors:
JALKANEN JANNE (FI)
PERTTILAE MARKO (FI)
PERTTILAE MARKO (FI)
Application Number:
PCT/IB2004/002126
Publication Date:
May 19, 2005
Filing Date:
June 24, 2004
Export Citation:
Assignee:
NOKIA CORP (FI)
NOKIA INC (US)
JALKANEN JANNE (FI)
PERTTILAE MARKO (FI)
NOKIA INC (US)
JALKANEN JANNE (FI)
PERTTILAE MARKO (FI)
International Classes:
G06K7/00; G06K7/10; H04L12/56; H04M1/72412; (IPC1-7): H04L12/56; H04Q5/22
Foreign References:
| US6398105B2 | 2002-06-04 | |||
| US6853294B1 | 2005-02-08 | |||
| US6705522B2 | 2004-03-16 | |||
| US20050010750A1 | 2005-01-13 |
Other References:
See also references of EP 1639768A4
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