Abstract: A method and apparatus are provided for transmitting time/frequency frames. The method includes: framing and mapping data symbols as input to a multi-carrier multiplexer; transforming pilots with multiple-state data modulation known to a receiver of the frames, the pilot modulation state being selected as a function of data that is not known to the receiver and of coding rules that are known to the receiver; and inserting previously-transformed pilots in distributed manner into the mapped frame.

Abstract: A method is provided for sending an acknowledgement frame by a receiving entity. The method includes: subsequent to reception of a data frame sent by a sending entity and including a synchronization field containing an invariant item of information known to the entities and an identification field containing information identifying the sending entity and the receiving entity, sending an acknowledgment frame including a synchronization field; and calculating a signature of a transmission channel between the sending entity and the receiving entity, the synchronization field of the acknowledgment frame being obtained on the basis of the synchronization field of the data frame, by using the signature.

Abstract: A method is provided for transmitting a control frame from a emitting entity to a receiving entity. The control frame includes what is called a “first layer” header field intended to convey information relating to a first layer. The method includes a modulation step employing a first modulation technique, and, before the modulation step, a step of inserting information relating to a second layer into the first layer header field.

Abstract: A method and apparatus are provided for deactivating at least one component of an entity of a wireless communication network including a plurality of entities. The communication network is organized into a plurality of communication layers, including a physical layer. The method includes, in the physical layer: a step of receiving a header of a frame of data extracted from a physical signal during reception; a step of decoding the header outputting at least one piece of information showing at least one addressee entity of the frame; a step of deactivating at least one component of the recipient entity of the header when the information representing the addressee entity designates an entity other than the recipient entity.

Abstract: A method and apparatus are provided for allocating resources in a communication network including at least one access point exchanging data with at least one terminal connected thereto, and managing at least two communication channels. The method in the access point implements a phase of associating and authenticating a terminal with the access point, including a step of associating a unique identifier with the terminal, and a phase of managing the assembly of channels. The phase of managing includes implementing a reference table associating one of the channels to a terminal identified by the unique identifier thereof, including the following steps: detecting a switching of a terminal connected with the access point, from an initial channel to a destination channel; and updating the reference table to associate the unique identifier of the terminal to the destination channel.

Abstract: A method is provided for transmitting a control frame from a emitting entity to a receiving entity. The control frame includes what is called a “first layer” header field intended to convey information relating to a first layer. The method includes a modulation step employing a first modulation technique, and, before the modulation step, a step of inserting information relating to a second layer into the first layer header field.

Abstract: A method for transmitting data packets in a communication network using a plurality of radio frequency channels, at least two of the radio frequency channels being concatenated to form a concatenated channel. The method includes: acquiring and reserving at least one of the channels from the concatenated channel, thus reserving a first frequency band for transmitting data packets to a first target device; acquiring and reserving channels from the concatenated channel that were unreserved during the first step of acquisition and reservation, thus reserving a second frequency band for transmitting data packets to a second target device; generating a preamble specific to a selected data packet, which includes a simultaneous transmission indicator on the first and second frequency bands; and simultaneously transmitting the data packets on the first and second frequency bands, from the selected packet and the specific preamble, before the selected packet on the second frequency band.

Abstract: A method and apparatus are provided for transmitting data packets in a communication network using a plurality of radio channels. The network is organized into a plurality of communication layers including a data link layer MAC and a physical layer PHY. The method includes aggregating data packets to be transmitted to a single recipient, in the MAC layer, outputting at least two aggregated packets, with which a single header of the PHY layer is associated. At least two of the radio channels are concatenated to form a concatenated channel. The aggregated packets are simultaneously transmitted respectively over at least two separate concatenated sub-channels, one concatenated sub-channel including at least one of the radio channels of the concatenated channel.

Abstract: A method is provided for sending an acknowledgement frame by a receiving entity. The method includes: subsequent to reception of a data frame sent by a sending entity and including a synchronization field containing an invariant item of information known to the entities and an identification field containing information identifying the sending entity and the receiving entity, sending an acknowledgment frame including a synchronization field; and calculating a signature of a transmission channel between the sending entity and the receiving entity, the synchronization field of the acknowledgment frame being obtained on the basis of the synchronization field of the data frame, by using the signature.

Abstract: A method for transmitting data packets in a communication network using a plurality of radio frequency channels, at least two of the radio frequency channels being concatenated to form a concatenated channel. The method includes: acquiring and reserving at least one of the channels from the concatenated channel, thus reserving a first frequency band for transmitting data packets to a first target device; acquiring and reserving channels from the concatenated channel that were unreserved during the first step of acquisition and reservation, thus reserving a second frequency band for transmitting data packets to a second target device; generating a preamble specific to a selected data packet, which includes a simultaneous transmission indicator on the first and second frequency bands; and simultaneously transmitting the data packets on the first and second frequency bands, from the selected packet and the specific preamble, before the selected packet on the second frequency band.

Abstract: A link-state routing method for routing a data stream in a meshed communications network comprising a plurality of nodes connected by links, at least one node of said network comprising a topology table which comprises at least one link, in which the node implements: a step of measuring a parameter relating to the load on said link, a step of comparison of the measured load parameter with a predetermined overload threshold, an overload state being assigned to said link when said overload threshold is exceeded by said load parameter; and a step of distributing an item of information relating to said overload state of said link to at least some of the nodes of said network.

Abstract: A method and apparatus are provided for transmitting data packets in a communication network using a plurality of radio channels. The network is organized into a plurality of communication layers including a data link layer MAC and a physical layer PHY. The method includes aggregating data packets to be transmitted to a single recipient, in the MAC layer, outputting at least two aggregated packets, with which a single header of the PHY layer is associated. At least two of the radio channels are concatenated to form a concatenated channel. The aggregated packets are simultaneously transmitted respectively over at least two separate concatenated sub-channels, one concatenated sub-channel including at least one of the radio channels of the concatenated channel.

Abstract: A method and apparatus are provided for deactivating at least one component of an entity of a wireless communication network including a plurality of entities. The communication network is organized into a plurality of communication layers, including a physical layer. The method includes, in the physical layer: a step of receiving a header of a frame of data extracted from a physical signal during reception; a step of decoding the header outputting at least one piece of information showing at least one addressee entity of the frame; a step of deactivating at least one component of the recipient entity of the header when the information representing the addressee entity designates an entity other than the recipient entity.

Abstract: A method and apparatus are provided for allocating resources in a communication network including at least one access point exchanging data with at least one terminal connected thereto, and managing at least two communication channels. The method in the access point implements a phase of associating and authenticating a terminal with the access point, including a step of associating a unique identifier with the terminal, and a phase of managing the assembly of channels. The phase of managing includes implementing a reference table associating one of the channels to a terminal identified by the unique identifier thereof, including the following steps: detecting a switching of a terminal connected with the access point, from an initial channel to a destination channel; and updating the reference table to associate the unique identifier of the terminal to the destination channel.

Abstract: A method and apparatus are provided for transmitting time/frequency frames. The method includes: framing and mapping data symbols as input to a multi-carrier multiplexer; transforming pilots with multiple-state data modulation known to a receiver of the frames, the pilot modulation state being selected as a function of data that is not known to the receiver and of coding rules that are known to the receiver; and inserting previously-transformed pilots in distributed manner into the mapped frame.

Abstract: A method is provided for managing paths between at least one source node and at least one destination node within the link layer in a mesh communication network including a plurality of intermediate nodes. At a given moment, at least two separate paths between the source node and the destination node are defined for distributing streams to be transmitted between the source node and the destination node. The method includes the following steps that are carried out in the source node: allocating a stream identifier to the streams; associating information representing a stream category to the streams; allocating one of the paths to one of the streams while taking into account the stream identifier and the stream category information.