Other

France Telecom

Christophe Delesalle

Patrick Tortelier

Christian Wipliez

Stephane Statiotis

Mickaël Salaun

Julie Gourdon

François Bougant

A method and system for transferring to a same client terminal at least a first flow with a first service quality and at least a second flow with a second service quality. The first flow is transmitted to the client terminal through an unconnected network, and the second flow is transmitted to the client terminal by a content server through a connected network after network resource booking with service quality by exchanging messages via the unconnected network. The method establishes a high throughput link between the client terminal and the content server, and transmits the second flow with the booked service quality to the client terminal through the high throughput link.

Method for multimedia flow transport

The interfacing device handles asynchronous/synchronous adaptation and rate control between the ATM flows and the flows transmitted on the wireless interface. It transposes the ATM cells (53 octets) into packets which can be transmitted directly on the wireless interface (40 octets in the case of DECT). Similarly, at the receiving end, it reconstructs the original ATM cell flow on the basis of the packets received. In order to guarantee a certain transmission quality at the level of the wireless link, the device uses a data acknowledgement and retransmission mechanism adapted to the characteristics of the synchronous wireless channel. In order to fulfil the quality of service requirements of the various applications in terms of error rates and transmission delays, the device allows the data protection mechanism to be set for each ATM connection depending on the characteristics of the service.

Interface device between an ATM equipment and a transmission channel having a synchronous wireless link

Growing community of inventors

Perros-Guirec, France

Christophe Delesalle