Methods for seamless delivery of broadcast and multicast...

H - Electricity – 04 – W

Patent

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H04W 28/04 (2009.01) H04L 1/22 (2006.01)

Patent

CA 2535904

Transmission techniques are provided that improve service continuity and reduce interruptions in delivery of content that can be caused by transitions that occur when the User Equipment (UE) moves from one cell to the other, or when the delivery of content changes from a Point-to-Point (PTP) connection to a Point-to-Multipoint (PTM) connection in the same serving cell, and vice- versa. Such transmission techniques enable seamless delivery of content across cell borders and/or between different transmission schemes such as Point-to- Multipoint (PTM) and Point-to-Point (PTP). Mechanisms for adjusting different streams and for recovering content from each data block during such transitions are also provided so that data is not lost during a transition. In addition, mechanisms for realigning data during decoding at a receiving terminal are also provided.

L'invention concerne des techniques de transmission destinées à améliorer la continuité d'un service, et à réduire les interruptions de distribution d'un contenu pouvant être causées par des transitions se produisant lorsque l'équipement utilisateur (UE) se déplace d'une cellule à l'autre, ou lorsque la distribution du contenu change entre une connexion point à point (PTP) et une connexion point à multipoint (PTM) dans la même cellule de desserte, et vice versa. Lesdites techniques de transmission permettent de distribuer en continu un contenu de part et d'autre des bords de cellules et/ou entre différents systèmes de transmission, tels que des systèmes point à multipoint (PTM) et point à point (PTP). Des mécanismes de réglage des différents flux, et de récupération d'un contenu de chaque bloc de données au cours desdites transitions sont également utilisés de manière à ne pas perdre de données au cours d'une transition. Des mécanismes de réalignement des données au cours du décodage dans une borne de réception sont, de plus, également utilisés.

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