End node and network coordinator using a CSMA based protocol

US8532005B2 · kind B2 · utility

Assignee

• Greenpeak Technologies N.V. · NL

Inventors

• Loeke Brederveld · Meerkerk, NL
• Bram Van Den Bosch · Berchem, BE
• Bart Magda Alex Jonkers · Hoevenen, BE
• Adriaan Kamerman · Nieuwegein, NL
• Stephan Johann Noel · Ixelles - Elsene, BE
• Cornelis Adrianus Marinus Steenbergen · Delft, NL

Key dates

• Filing date: Jun 23, 2008
• Grant date: Sep 10, 2013
• Expiry date: Mar 16, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G06Q10/087
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

A communication protocol based on CSMA between a node, in particular an electronic label, and a network coordinator is disclosed. The node comprises:—a transceiver provided for communication with a network coordinator, wherein the transceiver handles a transmission channel based on CSMA;—a processing unit provided for processing data received via the transmission channel and displaying the data on a display unit. The electronic label is arranged to perform:—sending recurrently a data request packet;—going to a low power mode after sending the data request packet; and—waking-up for receiving a data response packet a predefined time interval after beginning sending the data request packet. The network coordinator is arranged to transmit the data response packet the predefined time interval after receiving the beginning of the data request packet. The invention provides a protocol based on CSMA with very low power operation in which a multitude of end nodes could receive from a network coordinator their corresponding data.