Orange

Vincent Messié

Gaël Fromentoux

Benoît Radier

Arnaud Braud

Nathalie Omnes

A method for synchronizing a plurality of servers of a communication network, which are capable of exchanging time-stamped data using a time reference. The method is implemented by a primary server of the plurality and includes: transmitting to the other servers, called secondary servers, an initialization message containing an identifier of the primary server, a data item resulting from execution of an algorithm for selecting the primary server from the plurality of servers, and a piece of transmission time information on the initialization message; receiving from at least one secondary server a message acknowledging the transmitted initialization message; and validating a synchronization challenge comprising a difference between a recorded transmission time reference and the piece of transmission time information on the initialization message. The piece of transmission time information replaces the recorded time reference for the time-stamping of the data exchanged between the servers once the validation is complete.

Method for synchronizing a plurality of communication servers, and corresponding computer devices and programs

A method is described for processing a data transport service in a virtual data space deployed on a communications infrastructure, the virtual data space comprising a plurality of sites each comprising a communication server, also referred to as a connector, capable of hosting a data item or an application for processing the data. The method is implemented by an optimisation entity capable of communicating with the connector and comprises receiving a request for deploying the data transport service from a data management agent; obtaining a connectivity parameter with respect to the communication infrastructure of a connector of a site among the plurality of servers, the connector contributing to the data transport service of the received request; and determining at least one data path in the virtual data space, the at least one path comprising an ordered series of connectors selected according to the obtained connectivity parameter.

Method for processing a data transport service

A method for preparing usage data for a relay implemented in a computer network is disclosed. In one aspect, the network comprises at least one source device, one destination device, and at least one relay constituting a circuit to set up a communication between the source device and the destination device. The source device first of all retrieves the identifiers of the relays constituting the circuit and sends a proof of use (PoU) frame addressed to the destination device, each relay of the circuit adding to the PoU frame, at the time of passage, a signature made from a challenge and a key proper to the relay. The source device retrieves at least the signatures of each relay, and verifies the signatures received by using the public keys of the relays, the authentication of the signatures triggering the following steps: preparing, from the data received, an ordered list of identifiers of the relays used to set up the communication, sending transaction frames addressed to each relay identified in the list to generate proofs of use comprising at least the signatures contained in the PoU frame, the transaction frames being designed to trigger the sending by each relay of a proof of use recorded in a shared memory.

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Chatillon, France

Vincent Messié