Abstract:
Techniques are provided for reducing delay during streaming transmissions. A method may include receiving a stream of Dynamic Adaptive Streaming over HTTP (DASH) data segments (308) at a File Delivery over Unidirectional Transport (FLUTE) packet engine (310 400). The method may include establishing a first group of segments based on the DASH data segments and generating a first table of information. The method may include transmitting the first table (430b) and the first group of segments (430a) and establishing a second group of segments based on the DASH data segments the second group of segments including a partial overlap of DASH data segments included in the first group of segments. The method may include generating a second table of information (430b) and transmitting the second table and a collection of segments (430a) that includes DASH data segments from the second group that were not part of the first group.
Abstract:
Methods and apparatus for packetization of content for transmission over a network. A method is provided that includes generating one or more content packets from the multimedia content, wherein the content packets are associated with a time reference, and adding a sync header to the one or more content packets to form one or more application layer packets, respectively, wherein the sync header comprises a time indicator that indicates time relative to the time reference. An apparatus includes encoding logic configured to generate one or more content packets from the multimedia content, wherein the content packets are associated with a time reference, and packetization logic configured to add a sync header to the one or more content packets to form one or more application layer packets, respectively, wherein the sync header comprises a time indicator that indicates time relative to the time reference.
Abstract:
In general, this disclosure describes techniques for exchanging informati on between a plurality of encoder modules and a multiplex module to combine segments of data from the encoder modules with an improved overall quality. In particular, the encoder modules associate their respective segments of da ta with quality and rate information and send at least the quality and rate information associated with the segments of data to the multiplex module. Th e multiplex module analyzes the quality and rate information to determine wh ether the segments of data that encoder modules desire to include in the cur rent superframe fit within the available bandwidth of a transmission channel . If the multiplex module determines the plurality of segments of data do no t fit within the available bandwidth, the multiplex module selects one or mo re of the segments to be resized based on the quality and rate information r eceived from the encoder modules.
Abstract:
Sistemas y técnicas para comunicaciones seguras procedentes de una estacion abonada. La estacion abonada incluye un procesador que tiene un algoritmo de autenticacion para una primera red. El procesador está configurado para utilizar una clave para una segunda red en el algoritmo de autenticacion a efectos de establecer una sesion con la segunda red.
Abstract:
Métodos y aparatos para optimizar la entrega de contenidos de multidifusion mediante la utilizacion de una retroalimentacion probabilística. Se provee un método para transmitir datos desde un servidor a una pluralidad de terminales receptores. El método incluye transmitir los datos desde el servidor a la pluralidad de terminales receptores, y generar un valor aleatorio de la respuesta en cada terminal receptor. El método también incluye comparar el valor de la respuesta con un valor del acuse de recibo en cada terminal receptor, y transmitir una senal de acuse de recibo al servidor desde terminales receptores seleccionados. Los terminales receptores seleccionados son una porcion de la pluralidad de terminales receptores donde el valor de la respuesta tiene una relacion seleccionada con el valor del acuse de recibo.
Abstract:
An apparatus and method of mapping a short message service (SMS) information from a first communications system (120) to a corresponding message in a second, different cellular system (116) is claimed. SMS information having a format required by the first communication system (120) is received. The SMS information is mapped into a format required by the second communication system (106). Additional information is appended, if necessary, or informati on is removed as being extraneous information, if necessary, as required by the second communication system (106).
Abstract:
Systems and techniques for secured communications from a subscriber station is disclosed. The subscriber station includes a processor having an authentication algorithm for a first network. The processor is configured to use a key for a second network in the authentication algorithm to establish a session with the second network.
Abstract:
Shared secret data is used to authenticate and encrypt between a CDMA network and a GSM network such that a mobile station having a subscription in a GSM network can roam into a CDMA network and be authenticated to use the CDMA network and have messages encrypted without having a CDMA subscription. The goal of authenticating a GSM subscriber in a CDMA network using GSM authentication credentials is achieved by substituting a key Kc as SSD-A and messages are encrypted substituting Kc as SSD-B using a CAVE algorithm.
Abstract:
A method and apparatus to improve error resiliency in processing a multimedia bitstream is described. A directory of header information is generated for a multimedia bitstream. The directory information comprises packet header information associated with the multimedia bitstream. The directory information may be transmitted to a receiver along with the multimedia bitstream. A receiver of the multimedia bitstream and the directory can utilize the header information to identify and locate packets within and subsequent to erroneous data in the received bitstream. By identifying and locating packets that may otherwise be discarded, the receiver may be able to improve error recovery and decoding of the multimedia data.