Abstract: An application implementation method and a service controller to facilitate application development and improve application implementation efficiency, where the method includes receiving, by the service controller, description information of a first application, where the description information is received from an application server, determining, by the service controller, target network resource information according to the description information, where the target network resource information indicates a network resource required by the first application, and sending, by the service controller to a network controller, an invoking instruction carrying a network policy, where the invoking instruction instructs the network controller to invoke the target network resource according to the network policy to implement the first application.

Abstract: A method, an apparatus, a system locate an IPTV fault, where the method includes: performing synchronized evaluation on a monitored IPTV video stream according to a synchronization message, obtaining multiple corresponding local upstream evaluation results; receiving an evaluation result report message sent by a downstream monitoring point, where the evaluation result report message includes a downstream evaluation result, an evaluation result identifier, and synchronization packet information; finding, according to the synchronization packet information and the evaluation result identifier in the evaluation result report message sent by the downstream monitoring point, an upstream evaluation result corresponding to the downstream evaluation result; comparing the downstream evaluation result with the upstream evaluation result, and performing fault locating according to a result of the comparison.

Abstract: Embodiments of the present invention provide a method, an apparatus, and a system for evaluating video quality. In the embodiments of the present invention, a method in the prior art that the video quality is determined only according to the number of lost packets and a packet loss rate is modified, and the location of the most important lost packet is determined by analyzing the influence of the lost packet on other packets, and a damage degree or degree of intactness of the video frame is determined according to the most important lost packets, so as to determine the quality of the video frame. The method greatly improves the precision for evaluating the video quality.

Abstract: A serving method of a cache server relates to the field of communications, and can reduce bandwidth consumption of an upstream network and alleviate network pressure. The method include: receiving first request information sent by multiple user equipments, where the first request information indicates data separately required by the multiple user equipments and request points for the data separately required; if it is determined that same data is indicated in the first request information sent by at least two user equipments among the multiple user equipments and the same data has not been cached in the cache server, selecting one request point from request points falling within a preset window; and sending second request information to a source server, where the second request information indicates the uncached data and the selected request point.

Abstract: A method, an apparatus, a system locate an IPTV fault, where the method includes: performing synchronized evaluation on a monitored IPTV video stream according to a synchronization message, obtaining multiple corresponding local upstream evaluation results; receiving an evaluation result report message sent by a downstream monitoring point, where the evaluation result report message includes a downstream evaluation result, an evaluation result identifier, and synchronization packet information; finding, according to the synchronization packet information and the evaluation result identifier in the evaluation result report message sent by the downstream monitoring point, an upstream evaluation result corresponding to the downstream evaluation result; comparing the downstream evaluation result with the upstream evaluation result, and performing fault locating according to a result of the comparison.

Abstract: Embodiments of the present invention discloses a method and an apparatus for evaluating video quality, which relate to the field of communications technologies, and are invented for improving accuracy of evaluating quality of an IPTV service. The method includes: acquiring a channel video stream; acquiring a decoding feature parameter of a decoder, where the decoding feature parameter at least includes a decoding buffer capacity; acquiring a frame information loss ratio according to the decoding feature parameter, and acquiring mean opinion score-video MOS-V parameters according to the channel video stream; and acquiring a MOS-V value of the channel video stream according to the frame information loss ratio and the MOS-V parameters. The embodiments of the present invention are mainly applied to a technology for evaluating video quality.

Abstract: Embodiments of the present invention provide a method, an apparatus, and a system for evaluating video quality. In the embodiments of the present invention, a method in the prior art that the video quality is determined only according to the number of lost packets and a packet loss rate is modified, and the location of the most important lost packet is determined by analyzing the influence of the lost packet on other packets, and a damage degree or degree of intactness of the video frame is determined according to the most important lost packets, so as to determine the quality of the video frame. The method greatly improves the precision for evaluating the video quality.

Abstract: The present disclosure relates to the field of video transmission, and discloses a method, an apparatus, and a system for forwarding video data. A network device receives and buffers a media stream, resolves the buffered media stream, obtains Transport Stream (TS) packets in the media stream, and evaluates and identifies a visual sensitivity priority of each TS packet; discards a TS packet of low visual sensitivity, and re-capsulates a TS packet of high visual sensitivity into a new media stream; and sends the re-encapsulated new media stream to a user equipment. The network device is enabled to discard the TS packet of low visual sensitivity in the media stream, which reduces duration of a fast channel change.