Abstract: The invention pertains to a method for determining a sequence of access (300) to a communications network (100) by a plurality of nodes (101, 102, 103, 5 104, 107) of said communications network (100) in the context of the broadcasting of a data content by a transmitter node (101) to a set of receiver nodes (103, 107, 104, 102), at least one receiver node (102, 104) having to receive said content by means of another receiver node (103, 107), called a relay receiver node.

Abstract: A method for managing communications in a wireless communications network comprising a set of pairs constituted by a sender device and a receiver device, each of the devices having a determined area of communications coverage, the coverage areas of each pair having a mutual intersection area.

Abstract: A method for managing allocation of paths for transmission, in packets of symbols, of at least a first data content, each content being transmitted from a source node up to a destination node in a meshed communications network comprising a plurality of nodes, each destination node receiving a plurality of copies of a same packet of symbols of the content transmitted to said destination node by a source node, each copy being received by the destination node via a distinct transmission path directly from the source node or via at least one relay node of the meshed communications network, the packets being encoded with an error correction code enabling decoding by erasure of packets symbols.

Abstract: The invention relates to a method for acknowledging data received by a communication device, the data being received by data packets, with each packet comprising a plurality of data blocks. The communication device: determines (E503), for a packet, the number of data blocks whose data can be processed correctly, sends (E509, E510; E515) an acknowledgement for at least one data block in the packet if the number of data blocks whose data can be processed correctly is between a first and a second threshold, and sends (E504, E505, E511, E512, E515), for the data packet, a piece of information at packet level representing the number of data blocks whose data can be processed correctly if the number of data blocks whose data can be processed correctly is lower than the first threshold or higher than the second threshold.

Abstract: A method for the storage of a content from a source device to a storage device, the devices implementing a content protection protocol comprising a phase of exchanging a first encryption key (Kc) associated with a first key computation parameter (Nc).

Abstract: In a method for the restriction of access from a sink device to a content stored in a storage device, a content protection protocol comprises an authentication phase and an encryption key exchange phase is implemented between the storage device and the sink device. The method comprises a prior step for the association of at least one predetermined password with said content and/or said storage device; and the following steps of: a) obtaining at least one piece of access information during the authentication phase; b) obtaining a processing function dependent on said at least one piece of access information (UCPK) and said at least one predetermined password (CPK); c) applying the processing function thus obtained during the authentication phase of the protection protocol, the application of the processing function causing the authentication phase to fail when said at least one piece of access information does not meet a predetermined condition.

Abstract: In a method for securing the transfer of a data stream from a sender device to at least one receiver device, through a network comprising a plurality of nodes connected to one another by a plurality of links, the sender device is connected to an input node in the network and each receiver device is connected to an output node of the network. The method comprises the following steps: a) the transmission of the data stream to the receiver devices through the associated output nodes; b) the informing of the output nodes by the input node that the transmission or maintaining of transmission of the data stream, in clear (i.e.