Abstract: A method for delivering an audio and/or video content using adaptive streaming to a terminal, the audio and/or video content being segmented into data segments available in various representations with respective audio and/or video qualities, the representations being time-aligned per segment, the segments being further divided into chunks, a controller selects, from a set of candidate caching platforms, the caching platform to be used to deliver the audio and/or video content to the terminal, as a function of a minimum burst transfer duration compared with the chunk duration as defined by an origin server providing the audio and/or video content. The controller redirects the terminal to the selected platform for further delivery of the audio and/or video content in the form bursts of chunks in response to requests for segments.

Abstract: A mobile station is configured to operate a reception of audio and/or visual content from a remote server of audio and/or visual contents connected to the network and to operate restitution of the audio and/or visual content, the content transiting, between the reception and the restitution, via a data reception buffer of the mobile station. The method includes i) triggering a sending, to a roaming management device of the network, of a first piece of information according to which roaming of the mobile station is prohibited, when a first quantity of data available in the reception buffer, lower than a first predetermined threshold, is detected, then, ii) triggering a sending, to the roaming management device, of a second piece of information according to which roaming of the mobile station is authorized, when a second quantity of data available in the reception buffer, greater than a second predetermined threshold, is detected.

Abstract: A method for delivering an audio and/or video content using adaptive streaming to a terminal, the audio and/or video content being segmented into data segments available in various representations with respective audio and/or video qualities, the representations being time-aligned per segment, the segments being further divided into chunks, a controller selects, from a set of candidate caching platforms, the caching platform to be used to deliver the audio and/or video content to the terminal, as a function of a minimum burst transfer duration compared with the chunk duration as defined by an origin server providing the audio and/or video content. The controller redirects the terminal to the selected platform for further delivery of the audio and/or video content in the form bursts of chunks in response to requests for segments.

Abstract: For delivering an audio and/or video content using adaptive streaming from a cache server to a client device, the audio and/or video content being segmented into data segments available in various representations with respective audio and/or video qualities, the representations being time-aligned per segment, the segments being further divided into chunks, a method includes: obtaining a round-trip time value applicable between the cache server and the client device; computing a minimum bulk transfer size from the maximum average bitrate of the various representations of the audio and/or video content and from the obtained round-trip time value; computing a minimum bulk duration, with respect to the audio and/or video content, for the representation to be delivered to the client device; and delivering the audio and/or video content by burst transfers in the form of bulks of aggregated successive chunks for each segment in accordance with the computed minimum bulk duration.

Abstract: For delivering an audio and/or video content using adaptive streaming from a cache server to a client device, the audio and/or video content being segmented into data segments available in various representations with respective audio and/or video qualities, the representations being time-aligned per segment, the segments being further divided into chunks, a method includes: obtaining a round-trip time value applicable between the cache server and the client device; computing a minimum bulk transfer size from the maximum average bitrate of the various representations of the audio and/or video content and from the obtained round-trip time value; computing a minimum bulk duration, with respect to the audio and/or video content, for the representation to be delivered to the client device; and delivering the audio and/or video content by burst transfers in the form of bulks of aggregated successive chunks for each segment in accordance with the computed minimum bulk duration.

Abstract: A content delivery system for delivering an audio and/or video content to a mobile terminal is deployed on top of a mobile network and includes plural edge cache servers arranged using a star or hierarchical topology. The edge cache servers are connected to respective aggregation nodes of the mobile network such that a configurable breakout function of the nodes enables routing thereto packets addressed to an anycast addressing associated with the servers. When receiving a request, from the mobile terminal, for obtaining a manifest file of the audio and/or video content, an edge cache controller of the content delivery system creates a session identifier including a unicast addressing part pointing to the controller, and redirects the mobile terminal to the anycast addressing of the servers. The servers then obtain the session identifier from the mobile terminal and use the unicast addressing contained therein to receive context information from the controller.

Abstract: A local area network includes plural content delivery network CDN receiver devices so as to enable player-equipped terminals in the local area network to receive audio and/or video contents. The disclosed method includes: obtaining capacity information from the CDN receiver devices; selecting, according to the capacity information, at least one CDN receiver device for a session of delivering an audio and/or video content to the player; when the session ends, the selected at least one CDN receiver device holds in place, during a predefined time duration, processing resources for a potential upcoming session; when another session starts before expiry of the predefined time duration, the processing resources hold in place are used for the new session. And when another session starts after expiry of the predefined time duration, reselection of at least one CDN receiver device, according to updated capacity information, is performed.

Abstract: For delivering an audio-visual content to a client device, an interconnecting device interconnecting a first network to a second network, the client device being connected to the second network, an equipment adapted to provide the audio-visual content being connected to the first network, said equipment performs: receiving, from the client device, a first request for receiving the audio-visual content; transmitting a redirecting message to the client device, said redirecting message redirecting the client device toward an agent implemented in the interconnecting device. Furthermore, said agent performs: receiving, from the client device, a second request for receiving the audio-visual content; acting as a relay between said equipment and the client device.

Abstract: An audio-visual live content delivery system includes a client having access to a provider network via a gateway, an audio-visual live content delivering equipment comprising a multicaster for transmitting audio-visual live contents in multicast form via the provider network, a de-multicaster being able to perform a conversion in unicast form of audio-visual live contents received in multicast form from the multicaster, and a controller managing routing of requests to get audio-visual live contents. The client performs a discovery procedure aiming at receiving information on potential presence and availability of the de-multicaster. When the client intends receiving a targeted audio-visual live content, the client sends to the controller a request providing indication of presence and availability, or not, of the de-multicaster. Then the controller decides how redirecting the client to fulfill the request, according at least to the indication of presence and availability, or not, of the de-multicaster.

Abstract: This document describes an adaptive bitrate streaming method allowing streaming an audio video (AV) content to a client device using a multi content delivery network (CDN) approach. Each CDN stores multiple versions of a content that can be requested in the form of a succession of consecutive files using HTTP requests. The method is based on a use of an intermediate module, called diversity module, between an AV player of the client device and each CDN of a plurality of CDN. For each file of a version of a content requested by the AV player, the diversity module requests a manifest file to each CDN and estimates a bitrate of each CDN using reception performances of the manifest files. Each file is requested by the diversity module in the form of a succession of groups of segments structured according to a pattern comprising a predetermined number of segments.

Abstract: A gateway connects a first communication network comprising at least one terminal intended to consume multimedia contents and a second communication network via which the gateway is intended to receive the multimedia contents in a stream form. The gateway detects (400) a use of a unicast connection intended for transmitting a multimedia content from an original server to a terminal of said network via the gateway; seeks (403) a connection redirection rule according to information exchanged by the original server and the terminal; establishes (406) a multicast connection in order to receive the multimedia content; receives (407) the multimedia content in the form of a stream according to the multicast connection; and transmits (409) to the terminal the multimedia content in the form of a stream according to the unicast connection.

Abstract: An adaptive bitrate streaming method streams audio video (AV) to a client using a multi content delivery network (CDN) approach. Each CDN stores versions of content that can be requested in a succession of consecutive files using HTTP requests. The method is based on use of an intermediate module between an AV player of the client and each CDN. For each file of a version requested by the AV player, the intermediate module requests a manifest file to each CDN and estimates a bitrate of each CDN using reception performances of the manifest files. Each file is requested by the intermediate module in a succession of segment groups according to a pattern including a predetermined number of segments. Each group includes one set of segments for each CDN, each set including segments to be requested to the CDN to which they correspond proportional to the bitrate of this CDN.

Abstract: For delivering an AV live content, time being divided into transmission periods, the AV live content being divided into chunks, a server performs: obtaining at least one multicast reference stream intended to transport one chunk per transmission period; obtaining at least one multicast side stream intended to transport, for each transmission period, a plurality of chunks which at least includes the same chunk as in each multicast reference stream and at least one preceding chunk; and synchronously transmitting each multicast reference stream and each multicast side stream along the transmission periods. A device willing to receive the AV live content performs: joining one multicast side stream for obtaining at least one chunk transmitted in a first transmission period; and switching to one multicast reference stream for obtaining subsequent chunks which are transmitted from a second transmission period following the first transmission period.

Abstract: For delivering an AV live content, time being divided into transmission periods, the AV live content being divided into chunks, a server performs: obtaining at least one multicast reference stream intended to transport one chunk per transmission period; obtaining at least one multicast side stream intended to transport, for each transmission period, a plurality of chunks which at least includes the same chunk as in each multicast reference stream and at least one preceding chunk; and synchronously transmitting each multicast reference stream and each multicast side stream along the transmission periods. A device willing to receive the AV live content performs: joining one multicast side stream for obtaining at least one chunk transmitted in a first transmission period; and switching to one multicast reference stream for obtaining subsequent chunks which are transmitted from a second transmission period following the first transmission period.