Abstract: A device and a method for automatically deploying a communication network between a moving vehicle VM and a rear base BA, the moving vehicle moving from an initial position along a trajectory T. The deployment involves positioning a plurality of communication relay appliances along the trajectory of the VM to form, between the VM and the rear base, a two-way, linear wireless mesh communication network, such that the communications between the moving vehicle and the rear base maintain a communication link quality Q that is equal to or greater than a threshold value S. Each communication relay appliance is an autonomous mobile appliance, called Autonomous Robotic Communication Relay RCRA, capable of autonomously moving and of being positioned along the trajectory T followed by the VM in order to allow the quality of the communication link to be maintained.

Abstract: A method implemented by computer for transmitting data packets in a mesh network is provided, which is collision-free and which makes it possible to guarantee bounded latencies for end-to-end communications.

Abstract: A method implemented by computer to transmit data blocks formed by several data fragments, in a wireless network includes a plurality of nodes, the network having at least one routing path defined between a source node and a destination node and composed of a plurality of nodes such that three nodes at positions n/n+1/n+2 on the routing path define a child/parent/grandparent triad, the method comprising at least the following steps carried out on a triad of child, parent and grandparent nodes: sending from a child node a child/parent probing message, referred to as a “ping” message, to a parent node; sending from the parent node having received the “ping” message a parent/grandparent probing message, referred to as a “yin” message, to a grandparent node, if the parent node is available in a wait state; sending from the grandparent node having received the “yin” message a parent/grandparent probing response message, referred to as a “yang” message, to the parent node, if the grandparent node is available; send

Abstract: A device is provided for communication in an IP network to significantly increase the bandwidth available for wireless communications between user terminals and their correspondents in the IP network. The device operates as aggregation router which, via a single network interface, to allocate the received datastreams to different wireless routers configured according to a so-called aggregate router mode systematically using a network address translation (NAT) mechanism for any traffic routed between the LAN and WAN interfaces, and to allow the connected terminals to benefit from the aggregate bandwidth of the aggregate wireless routers.

Abstract: A device and method are provided for establishing a session key between two entities of a communication network that may be highly heterogeneous in terms of resources. The method, based on the Diffie-Hellman (DH) algorithm, provides for the delegation to assistant nodes of the network of the cryptographic operations required for the computations of the DH public value and of the DH session key for the node which is constrained in terms of resources.

Abstract: A method and a device for setting up a session key between a source entity and a target entity in a communication network comprises a plurality of communicating entities. The method, which relies on the use of symmetrical cryptographic primitives, provides each entity in the session with protection against denial of service attacks by setting up a session in four or five message exchanges.

Abstract: A method and a device for forming a secure wireless network for nodes with limited resources, between which no previous trust relationship exists is provided. The method can be used to generate a list of neighboring nodes for a requesting node and subsequently establish a secure channel between the requesting node and an authentication entity. A security association is established with each neighboring node on the basis of a master session key received via the secure channel.

Abstract: A method and apparatus for automatically selecting a wireless access network for a mobile device without intervention of the user comprises a method for selecting, according to the location of a mobile device, a connection interface for connecting to a wireless access network. The mobile device is equipped with a plurality of connection interfaces, the method allowing the access networks available at the location of the mobile device to be identified, a plurality ‘n’ of measurements of the quality of the signals for each identified access network to be taken for each connection interface of the mobile device, the ‘n’ measurements to be evaluated, for each connection interface, according to predefined evaluation criteria, and the results of the evaluations to be compared in order to select the connection interface having the best evaluation of the quality of the signal from among the plurality of connection interfaces of the mobile device.

Abstract: A system and a method is provided for establishing a session key in a context of communications between entities, the identifiers of which are generated cryptographically and for which one of the entities is highly resource-constrained. It includes assigning to assistant entities of the resource-constrained entity, the highest-consuming asymmetric cryptography operations.

Abstract: A method for selecting a router node in a LLN (Low power and Lossy Network) type telecommunication network wherein, upon receipt by a router node of a data packet from a host node or an adherence request to a multicast group from a host node, the router node transmits to a root node a MER_Request request of configuration as a multicast router node to serve the host node, and upon receipt of the MER_Request request, the root node determines, from an association table, a configuration of the router node and transmits to the router node a MER_Reply reply message including the determined configuration.

Abstract: A method and a device for forming a secure wireless network for nodes with limited resources, between which no previous trust relationship exists is provided. The method can be used to generate a list of neighboring nodes for a requesting node and subsequently establish a secure channel between the requesting node and an authentication entity. A security association is established with each neighboring node on the basis of a master session key received via the secure channel.

Abstract: A method and a device for selecting a communication interface of a source host so as to transmit data to a destination host in an optimal manner. The method allows the source host to calculate the total route cost to the destination host from each of its interfaces, as a function of the routing metrics, and to select the interface corresponding to the lowest value of total route cost.

Abstract: A system and a method is provided for managing the mobility of a mobile network in a Proxy Mobile Internet Protocol (PMIP) environment operating under the Dynamic Host Configuration Protocol (DHCP) protocol. The method is based on prefix allotment between a server DHCPv6 and a mobile router via an access gateway (MAG) and the exchanging of messages between the server and a point of attachment (LMA).

Abstract: A method and a device for setting up a session key between a source entity and a target entity in a communication network comprises a plurality of communicating entities. The method, which relies on the use of symmetrical cryptographic primitives, provides each entity in the session with protection against denial of service attacks by setting up a session in four or five message exchanges.

Abstract: A method for preselecting a router in a LLN (Lower power and Lossy Network) network from a plurality of nodes in which each router node transmits to the other router nodes of the LLN network within direct radio range of the router node an announcement message, and, upon receiving the announcement message, each of the other router nodes compares its current status with respect to a router node with the status indicated in the announcement message, and configures its status depending on the comparison so that a single node from among the nodes of the LLN network within direct radio range of the router node transmits to the root node a configuration request MER_Request as a multicast router for data from or intended for the host node.

Abstract: A device and a method are provided for generating IPv6 addresses from a vehicle identification number VIN. The method carried out by the communication controller of the vehicle is used inside the vehicle to generate unique local IPv6 addresses for the on-board devices. The method also enables the generation of IPv6 addresses for communication to the outside of the vehicle.

Abstract: A device and method are provided for establishing a session key between two entities of a communication network that may be highly heterogeneous in terms of resources. The method, based on the Diffie-Hellman (DH) algorithm, provides for the delegation to assistant nodes of the network of the cryptographic operations required for the computations of the DH public value and of the DH session key for the node which is constrained in terms of resources.

Abstract: A system and a method are provided for authenticating the nodes of a communication network in order to access the services of a service provider, and includes a collective authentication of the nodes, performed in a single exchange between the nodes of the network declared in a group and an authentication server. Depending on the result of the authentication, the service provider is provided with cryptographic material in order to implement individualized controlled access to the resources or to the services offered for each node.

Abstract: A system and a method is provided for establishing a session key in a context of communications between entities, the identifiers of which are generated cryptographically and for which one of the entities is highly resource-constrained. It includes assigning to assistant entities of the resource-constrained entity, the highest-consuming asymmetric cryptography operations.

Abstract: A system and a method is provided for managing the mobility of a mobile network in a Proxy Mobile Internet Protocol (PMIP) environment operating under the Dynamic Host Configuration Protocol (DHCP) protocol. The method is based on prefix allotment between a server DHCPv6 and a mobile router via an access gateway (MAG) and the exchanging of messages between the server and a point of attachment (LMA).