H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/56 (2006.01) H04L 1/08 (2006.01)
Patent
CA 2674414
A method of real-time transmission/reception of data in packets in an IP network between a server (S) and a client terminal (CT). On the server side (S), each packet (Pk) to be transmitted is assigned (A) a send continuity index (Ck) and each packet (Pk) is transmitted (B) successively together with its continuity index (Ck) to the client terminal (CT). On the client terminal side, any break in continuity of packet streams received is detected (D) on the basis of the continuity indices (Ck) associated with each of the packets received. On detecting a stream discontinuity (Ckr), at least one resend request (RR (Ckr, @CT) requesting the resending of at least one missing packet is transmitted (E) to the server (S), for as long as this or these missing packets has or have not been received by the client terminal (CT). Application to the transmission of isochronous data streams, multimedia data streams in an IP network.
Un procédé de transmission/réception en temps réel de données par paquets en réseau IP entre un serveur (S) et un terminal client (CT). Côté serveur (S) on affecte (A) à chaque paquet (Pk) à transmettre un index de continuité d'émission (Ck) et on transmet (B) successivement chaque paquet (Pk) et son index de continuité (Ck) vers le terminal client (CT). Côté terminal client on détecte (D) toute rupture de continuité de flux de paquets reçus à partir des index de continuité (Ck) associés à chacun des paquets reçus. Sur détection d'une discontinuité de flux (Ckr), on transmet (E) au serveur (S) au moins une requête de réémission (RR (Ckr, @CT) d'au moins un paquet manquant, tant que ce ou ces paquets manquants n'a ou n'ont pas été reçus par le terminal client (CT). Application à la transmission de flux de données isochrones, flux de données multimédia en réseau IP.
Cannieux Laurent
Ganthier Philippe
Vincent David
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Tdf
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