Abstract: The invention relates to a packet forwarding method in a cooperative network implementing a source terminal, a destination terminal, and at least one relay terminal. In case of a packet decoding error in a node of the network, this method, depending on the outage state of a direct or relayed channel between two nodes of the network, enables a determination of the node(s) having to perform retransmission of the packet and if applicable, the transmission resource(s) to be used.

Abstract: The invention relates to a transmission control method of a set of transmitter/receiver systems of a local network comprising N transmitter/receiver systems wishing to transmit at least one data packet via the wireless local network, each transmitter/receiver system wishing to transmit said at least one data packet after a contention period during which a transmitter/receiver is or is not authorised to transmit the data packet of said transmitter/receiver, the method being characterised in that the contention period is broken down into R consecutive contention windows where R?1, each contention window being broken down into K intervals of equal duration ? followed by an interval of duration ?, each contention window corresponding to a round r of contention; and in that the method comprises a step of determining the number K of intervals and the number R of contention windows, on the basis of the number N of transmitter/receiver systems wishing to transmit at least one data packet via the wireless local networ

Abstract: A method for transmitting packets in a cooperative network including a source terminal, a recipient terminal, and at least one relay terminal, the method using a turbocoding distributed between the source terminal and the relay terminal, one of the components of the turbocoder located in the source terminal or the relay terminal, or even both components being adaptive as a function of a characteristic of the transmission channel.

Abstract: The present invention relates to a communication method supervised by an interference classification. For two couples of transmitting and receiving terminals having communications using the same radio resources and interfering with each other, a partition of the interference diagram into a plurality of distinct zones is determined, each zone corresponding to a particular processing. For an operating point of the transmitting and receiving terminals, the zone in which this point is located is determined, and the processing associated with that zone is performed in at least one of the receiving terminals.

Abstract: The invention relates to a link adaptation method for a cellular or heterogeneous wireless telecommunications system. The communications of the system are organized in pairs of interfering communications. For a first communication between a first transmitting terminal and a first receiving terminal interfering with a second communication between a second transmitting terminal and a second receiving terminal, the first and/or second link(s) are adapted, at a constant transmission power, by selecting a weak or strong interference regime for the first and/or second link(s), the weak regime corresponding to processing of the interference as thermal noise, the strong regime corresponding to processing in which the interfering communication is decoded in order to be eliminated from the received signal.

Abstract: A method of allocating resources in a cellular radio communication network including user equipments and a cluster composed of local access points to the network covering a microcell. For each local access point, the presence of user equipments in a coverage zone of the microcell associated with the local access point is determined. A local coverage message specifying equipments determined as present in the microcell coverage zone is generated. A global coverage message by aggregation of the local coverage message of each local access point in the cluster is generated. At least one operating parameter of a local access point in the cluster is modified as a function of the global coverage message. For each local access point in the cluster, an activity state of the user equipment is determined and a field in the local coverage message is entered accordingly with data representing the activity of the equipment.

Abstract: The present invention relates a voice communication method between a plurality of users sharing the same transmission band. The resource is accessed by time division under the supervision of a control node. During a polling step, any user wishing to speak transmits (210) a request to the control node. The control node allocates (220) transmission frames to the requesting users or merely to some of these users. Users allocated a transmission frame can then transmit (230) a voice packet to the respectively allocated frames thereof. The transmission frames are interleaved temporally so as to give the impression of full-duplex communication during voice reproduction.

Abstract: The present invention relates to a scheduling method in a multi-user communication system. Said method categorises packets from different users as urgent packets and non-urgent packets, assigns to urgent packets the transmission resources for obtaining the best link qualities by giving preference to the most urgent packets, assigns to non-urgent packets the remaining resources, and transmits each non-urgent packet with a transmission power lower than that which would be necessary for transmitting it with a maximum spectral efficiency, in view of the quality of service required on the link.

Abstract: The invention relates to a data packet transmission process in a communication system comprising at least one terminal (UE) communicating with a base station (BS), the process comprising at least one transmission (S4) of the data packet with a given power, from the terminal to the base station based on a HARQ scheme to obtain a residual packet error rate PERres after a number of transmissions Trn, the process being characterized in that it comprises a step (S) for the joint selection of the following parameters: the number of transmissions Trn; the target packet error rate PERtg(i) of each transmission i, where i=1, . . . , Trn, to arrive at the residual packet error rate PERres; and the modulation and coding scheme m corresponding to each target packet error rate PERtg(i) so as to minimize the data packet transmission power.

Abstract: The invention concerns a method for managing a network of a plurality of small cell base stations arranged in a macro-cell and linked to a base station of the macro-cell, each small cell base station being adapted to cover a small cell of the macro-cell and to be linked via radio to at least one mobile terminal present in the small cell.

Abstract: A method for reporting a user channel quality in a wireless telecommunication system. The user channel includes a plurality of transmission resources such as, for example, frequency intervals of an OFDM multiplex. The user terminal determines the transmission resources which would be in an outage position for a transmission with a set point bit rate. The user terminal transmits on the uplink the list of resources which would be in an outage position as well as a channel quality indicator for resources which would not be.

Abstract: A wireless telecommunication system receiver is described comprising a demodulator adapted to demodulate a signal received from a source via a transmission channel to provide an error correction code word in the form of flexible or hard values, a decoder adapted to decode the code word, characterized in that it further comprises decision means adapted to receive an estimation of the fading coefficients of the channel during the transmission of the code word as well as an estimation of the noise variance or the signal to noise ratio, to deduce therefrom an estimation of the relative instantaneous mutual information to the channel, and to decide whether or not to inhibit the decoding of the code word by the decoder, according to whether the binary rate of transmission of the source is respectively greater than or less than a characteristic threshold of the instantaneous mutual information.

Abstract: A gateway for interfacing a capillary network of communicating devices with an access point of a cellular network. The gateway includes a plurality of input buffers designed to store elementary packets. A plurality of output buffers store composite packets formed by aggregation of elementary packets, each output buffer being associated with a type of flow of the cellular network. A flow regulator determines for each output buffer, parameters of size and/or transmission times of the composite packets such that the flow of these packets is consistent with the type of flow of the cellular network associated with the output buffer. A multiplexing device transfers and aggregates elementary packets, stored in the input buffers, in the form of composite packets having the parameters determined by the flow regulator. A scheduling device for transmitting the composite packets by the transmission resources of the cellular network.

Abstract: A method for controlling the transmission power of a terminal in a cellular telecommunications network, in which the number of transmission resources is greater than the number of users is disclosed. In one aspect, the number of additional transmission resources necessary for the communication of the user if a modulation and coding scheme with minimal spectral efficiency is used, and whether these resources are available, are determined, they are allocated to the user, and the transmission power of the terminal is set to the transmission power enabling the required quality of service to be obtained by using the predetermined modulation and coding scheme.

Abstract: The present invention relates to a centralized power allocation method in a wireless telecommunication system comprising at least a first couple of terminals, consisting of a first transmitting terminal and a first receiving terminal, and a second couple of terminals, consisting of a second transmitting terminal and a second receiving terminal. A control node partitions the interference diagram between the communication of the first couple and the communication of the second couple, into different areas, each area being associated to a type of processing of the interference. The control node calculates the minimum power curve for each communication in each said area. The power values to be allocated are given by the coordinates of the point of intersection of both curves in said diagram.

Abstract: A method and a device including the steps of: locally detecting an event in a pipe; generating at least one signal, coded according to the detected event; and detecting a frequency signature of said signal in images generated by a synthetic aperture radar.

Abstract: A wireless OFDMA telecommunications system comprising a transmitter adapted to transmit, by means of an OFDM modulator, a plurality of data packets destined for receivers of a plurality of users, via the same plurality of transmission channels, the transmission channel of a user being associated with a group of sub-carriers of the OFDM multiplex and a set of OFDM symbol times of a transmission interval, each receiver being adapted to signal to the transmitter the loss of a packet transmitted over the transmission channel of the corresponding user, said transmitter further comprising a packet scheduler adapted to control retransmission of each packet lost by means of said modulator. Each receiver comprises detection means of an outage situation of the transmission channel of the corresponding user and signals this to said transmitter by means of an outage information (OUTAGE/NOUTAGE).

Abstract: A method of power allocation in a wireless telecommunication system including at least a first couple of terminals, including a first transmitting terminal and of a first receiving terminal, and of a second couple of terminals, including a second transmitting terminal and a second receiving terminal. After a phase of initialization of the allocated powers, a plurality of iterations are carried out, each iteration including a first half-iteration, which is the task of the first couple of terminals, and a second half-iteration which is the task of the second couple of terminals. Each half-iteration includes a step of estimating the signal-to-noise and interference-to-noise ratios by the receiving terminal, and a step of calculating the minimum output power compatible with the treatment of the interference, for the prescribed throughput of the call in question.

Abstract: The invention relates to a data packet transmission process in a communication system comprising at least one terminal (UE) communicating with a base station (BS), the process comprising at least one transmission (S4) of the data packet with a given power, from the terminal to the base station based on a HARQ scheme to obtain a residual packet error rate PERres after a number of transmissions Trn, the process being characterised in that it comprises a step (S) for the joint selection of the following parameters: the number of transmissions Trn; the target packet error rate PERtg(i) of each transmission i, where i=1, . . . , Trn, to arrive at the residual packet error rate PERres; and the modulation and coding scheme m corresponding to each target packet error rate PERtg(i) so as to minimise the data packet transmission power.

Abstract: A method for transmitting packets in a cooperative network including a source terminal, a recipient terminal, and at least one relay terminal, the method using a turbocoding distributed between the source terminal and the relay terminal, one of the components of the turbocoder located in the source terminal or the relay terminal, or even both components being adaptive as a function of a characteristic of the transmission channel.