Node of an improved multihop ad-hoc radio network and associated method

A method for broadcasting information in a multi-hop ad-hoc radio network, applying an information broadcasting service of the flooding type, the method comprising:

• a step for receiving data packets, including decoding the messages contained in the received packets and of storing the pieces of information contained in the decoded messages;
• a step for transmitting data packets, including encoding in a message all or part of the pieces of information stored, of generating a packet including in the payload portion, said message, and in the header portion, a list of the identifiers of the combined pieces of information in said message, and of transmitting the generated packet by applying a dynamic containment process for accessing the radio resource, said process requiring, for reducing collisions, the determination of operating parameters, said operating parameters being also taken into account for encoding all or part of the pieces of information stored in a message.

A node of a multi-hop ad-hoc radio network, the network applying an information broadcasting service of the flooding type, the node comprising:

• a controller accessing the radio resource able to perform dynamic containment for accessing the radio resource,
• a network coder allowing generation of said data packets so that each packet includes, in the useful payload portion, a message resulting from the combination of a plurality of pieces of information to be broadcast, and in the header portion, a list of the identifiers of the combined pieces of information in said message, the network coder including a transmission stage, able to generate data packets from all or part of said plurality of pieces of information, the transmission stage including a strategy module, an encoding module and a transmission module,
• and wherein said controller accessing the radio resource includes a reception module, a collision reduction module and a transmission module, the collision reduction module being able to pass at least one operating parameter on to the strategy module, the collision reduction module being able to control the network coder for generating a data packet.