Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Commissariat a L'energie Atomique

Università Degli Studi Di Roma "La Sapienza"

Renault S.a.s.

Emilio Calvanese Strinati

Stefania Sesia

Antonio De Domenico

Giorgio Corbellini

Rohit Gupta

Cédric Abgrall

Jessica Oueis

Benoît Miscopein

Eric Perraud

Dimitri Ktenas

Nicola Di Pietro

Serge Bories

Mohamed Sana

Sergio Barbarossa

Cedric Abgrall

Ibtissam Labriji

Frédéric Joly

Mickaël Maman

Ngoc-Lam Dinh

A method for associating user equipment with base stations of a cellular network, in particular of a heterogeneous network such as a 5G network, uses a multi-agent reinforcement learning (MARL) algorithm. When a user equipment enters the network, the agent associated with this equipment downloads the instance of an association meta model to a coordinating unit, pre-trained by means of reinforcement learning. The agent subsequently constructs a local observation vector, comprising observables relating to the user equipment, and a global observation vector, including observables relating to the environment of this equipment. The local and global observation vectors are projected into the same reference space, the concatenation of the vectors thus projected encoding the state of the agent. It deduces from the model and from this state, an association decision. The model is updated according to a policy gradient method to consider evolution of the environment of the user.

Method of association of user equipment in a cellular network according to a transferable association policy

Method for offloading calculation tasks between a user terminal and an edge host device in a communication network according to a multi-access edge computing technique, including steps of: Offloading data necessary for the execution of the calculation from the user terminal to the edge host device, and Transmitting data resulting from the calculation carried out by the edge host device, from the edge host device to the user terminal, wherein the offloading of data is controlled on the basis of joint criteria of energy efficiency and of minimization of exposure of a user of the user terminal to electromagnetic fields.

Control of offloading of calculation tasks in multi-access edge computing

A method for a mobile terminal to access a network with a multi-link with a plurality of network access points. When the terminal wishes to obtain a quality of service expressed in the form of a minimum bitrate constraint on the uplink, it determines the identity and the number of access points with which it must establish a link to meet this constraint while minimizing its emission power. A MEC network with a mobile terminal that can request the network to support a computational task under latency constraint.

Multi-link network access method

A method of processing a computing task required by wireless equipment of a cellular communication network, including classifying the task in at least one class of immediate offloaded execution and a class of immediate local execution, by traversing oriented graph decision nodes and terminal nodes each assigned to one of the classes, the decision nodes being distributed into at least three hierarchical levels themselves distributed into at least three subsets of levels. Traversal of the graph includes: during transit through any decision node of a first subset of levels, verification of a feasibility criterion for the offloading of the task for execution by third-party equipment; during transit through any decision node of a second subset of levels, verification of a criticality criterion for execution of the task, and during transit through any decision node of a third subset of levels, verification of an opportunity criterion for execution of the task.

Method and computer program for offloading execution of computing tasks of a wireless equipment

The invention relates to a method for managing an access point of a communication network, said access point being suitable for supplying data packets to at least one communication terminal connected to said access point, said method comprising the following steps when the access point is inactive or on standby: a plurality of data packets are placed in a queue, a data packet having a waiting time d at the expiration of which the packet is considered lost; for each waiting time value d, the transmission time of the data packets having a waiting time d is determined; and if, for a waiting time d, a corresponding transmission time Tis higher than said corresponding waiting time d, the duration d&#x2212;Tthus being negative, the method comprises a step of activating said access point in order to transmit packets from the queue, the transmitted packets preferably being those having a low waiting time.

Method for managing an access point of a communication network according to the traffic

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 authorized to transmit the data packet of said transmitter/receiver, the method being characterized in that the contention period is broken down into R consecutive contention windows where R&#x2267;1, each contention window being broken down into K intervals of equal duration &#x3b8; followed by an interval of duration &#x3b4;, 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 network.

Method for accessing a transmission channel in a wireless communication network with a contention window

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.

Link adaptation method supervised by the selection of an interference regime

The invention relates to a method for managing a network of a plurality of base stations of small cells, placed in a region of a macro-cell in which at least one terminal is found, each small cell base station being adapted for covering a small cell, the method being characterized in that a set A of at least one small cell covering said at least one terminal present in the region, is determined, and the smallest subset B of at least one small cell allowing coverage of said at least one terminal is selected from said set A, such that only said at least one small cell of the subset B will have to be active.

Dynamic management of small cells for optimizing the energy consumption of a network

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.

Method for modifying the state of local access points in a cellular network

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.

Location of a leak in a pipe

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.

Traffic management gateway for machine-to-machine network

The present invention relates to an asynchronous communication method in a wireless sensor network comprising a tree structure. For each node of the network, the communication is organized as a sequence of time frames, each frame including a listening phase possibly followed by a receiving phase and/or a transmitting phase. The method, of the preamble sampling type, enables a node to make a time appointment to its child node to transmit them a time window allocation message, each child node then transmitting at least one data packet in the window it has been allocated to. By minimizing the collision risk between packets and by maximizing the time during which the sensors go to sleep, the communication method both reduces the latency and the consumption within the network.

Asynchronous communication method for a wireless sensor network

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.

Dynamic management of small cells for traffic-related optimization of the energy consumption of a network

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.

Cooperative network with adaptive forwarding request policy

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.

Growing community of inventors

Grenoble, France

Emilio Calvanese Strinati