Abstract:
The present invention relates to a method of synchronisation between communication networks exchanging information by frame of informations, each communication network having clock and the number of clock pulses is monitored by a counter. The synchronisation is made by reading information representing the counted clock pulses of the clock of the first network at the appearance of a reference event, inserting at least said information or calculated information on the basis of said information into the frame of information as the synchronisation information, transferring said frame of information from the first to the second network, reading information representing the number of counted clock pulse of the clock of the second network at the appearance of reference event, reading synchronisation information inserted in received frame of information from the first network, calculating a difference between information and synchronising the second network.
Abstract:
The present invention concerns a method and an apparatus of generating a reference event in a receiving node receiving frames of information, when a frame of information is received, the method and the apparatus sample the frame of information in order to form sampled data, process sampled data in order to detect among said sampled data a specific data, monitor the number of processed sampled data until the detection of a specific data and generate a reference event according to the result of processing and monitoring.
Abstract:
One embodiment of the invention pertains to a method for allocating bandwidth in a communications network, characterized in that it comprises steps for: a) determining a subset of elementary networks from a set of possible elementary networks in a communications network, the elementary networks of the subset each being capable of simultaneously implementing a elementary network encoding scheme; b) determining at least one critical destination node in the communications network; c) allocating at least one bandwidth portion released by an application of the elementary network encoding scheme in at least one elementary network of the subset, for a transmission of at least one additional data unit to the at least one critical destination node.
Abstract:
Disclosed is a method of resource reservation in the context of the transmission of a data content on a transmission path between a source device and a sink device belonging to a communications network. Said network comprises plurality of subnets interconnected by at least one interconnection device possessing at least two communications interfaces connected to said subnets.
Abstract:
The present invention relates to a method of synchronization between communication networks exchanging information by frame of informations, each communication network having clock and the number of clock pulses is monitored by a counter the synchronization is made by reading information representing the counted clock pulses of the clock of the first network at the appearance of a reference event, inserting at least said information or calculated information on the basis of said information into the frame of information as the synchronization information, transferring said frame of information from the first to the second network, reading information representing the number of counted clock pulse of the clock of the second network at the appearance of reference event, reading synchronization information inserted in received frame of information from the first network, calculating a difference between information and synchronizing the second network.
Abstract:
The present invention relates to a method of synchronization between communication networks exchanging information by frame of informations, each communication network having clock and the number of clock pulses is monitored by a counter the synchronization is made by reading information representing the counted clock pulses of the clock of the first network at the appearance of a reference event, inserting at least said information or calculated information on the basis of said information into the frame of information as the synchronization information, transferring said frame of information from the first to the second network, reading information representing the number of counted clock pulse of the clock of the second network at the appearance of reference event, reading synchronization information inserted in received frame of information from the first network, calculating a difference between information and synchronizing the second network.
Abstract:
An information packet transmission device for a communication system has a transmission part and a reception part, at least one of the transmission or reception parts having a turbocoder, and an external interleaver upstream of the turbocoder. The turbocoder preferentially has an interleaver, and a deinterleaver of the “x to xe” type. The external interleavers are of the row column or column row type.
Abstract:
The invention is directed to the optimization of an access to a medium in wireless networks which can be accessed by a plurality of nodes, each node of the plurality of nodes using a medium access mechanism of the Carrier Sense Multiple Access with Collision Avoidance type based on a computation of a backoff value. A specific value is associated with each node of a set of nodes of the plurality of nodes, the specific value of a node being known by the other nodes of the set of nodes. According to the invention, a backoff value is determined (505, 510) for each node of the set of nodes, in each node of the set of nodes, the backoff value associated with a node being determined as a function of the specific value associated with that node.
Abstract:
One embodiment of the invention pertains to a method for allocating bandwidth in a communications network, characterized in that it comprises steps for: a) determining a subset of elementary networks from a set of possible elementary networks in a communications network, the elementary networks of the subset each being capable of simultaneously implementing a elementary network encoding scheme; b) determining at least one critical destination node in the communications network; c) allocating at least one bandwidth portion released by an application of the elementary network encoding scheme in at least one elementary network of the subset, for a transmission of at least one additional data unit to the at least one critical destination node.
Abstract:
A method for the management of resources for transmission compliant with a communications protocol, in a communications network, of a first data stream between a source device (101, 102, 103) and at least one sink device (106), is implemented by a manager device and comprises step of a first allocation of a first value of bandwidth, called a reference value, for the transmission of the first stream. Such a method furthermore comprises the following steps: obtaining a piece of information representing a first temporary value of bandwidth for the transmission of the first stream, associated with a relevance time interval; making a second allocation, for a duration equal to the relevance time interval, of a second value, called a validated value, of bandwidth for the transmission of the first stream dependant on the first temporary value of bandwidth for the transmission of the first stream.