Patent application number | Description | Published |
20110199907 | METHOD, NETWORK NODE AND SYSTEM FOR SUPPRESSING LOST PACKET RETRANSMISSION - A method, a network node, and a system for suppressing lost packet retransmission are provided. The method includes: generating retransmission suppression information, in which the retransmission suppression information includes identification information of data packets requiring retransmission suppression; and transmitting the retransmission suppression information to a receiving node, in which the retransmission suppression information is used to enable the receiving node not to request retransmission when data packets corresponding to the identification information in the retransmission suppression information are lost after the receiving node receives the retransmission suppression information. The network node includes a generating module and a transmitting module. The system includes an intermediate node and a receiving node. | 08-18-2011 |
20110219414 | METHOD, APPARATUS, AND SYSTEM FOR SWITCHING CHANNELS - A method, an apparatus and a system for switching channels are disclosed. The method includes: buffering a multicast Internet Protocol (IP) packet of a live channel; receiving a channel switching request sent by a client for switching to the live channel, and pushing the buffered multicast IP packet to the client; and judging whether the pushed multicast IP packet is synchronous to a real-time multicast IP packet of the live channel; and stopping pushing the buffered multicast IP packet to the client and sending the real-time multicast IP packet to the client if the pushed multicast IP packet is synchronous to the real-time multicast IP packet. The embodiments of the present invention involve no modification of the user terminal and improve the universal applicability and extensibility of the channel switching solution. | 09-08-2011 |
20110274121 | METHOD, APPARATUS, AND SYSTEM FOR TRANSPORTING VIDEO STREAMS - A method, an apparatus, and a system for transporting video streams are disclosed herein to handle video streams of different coding mechanisms and different encapsulation mechanisms intelligently according to visual sensitivity. The method includes: assessing a video data packet to gain visual sensitivity identifier information of the video data packet; adding the visual sensitivity identifier information into the video data packet; and handling the video data packet according to the visual sensitivity identifier information while transporting the video data packet. The embodiments of the present invention are applicable to transporting of network video streams. | 11-10-2011 |
20120036545 | METHOD AND APPARATUS FOR OBTAINING ADDRESS OF VIDEO TRANSMISSION MANAGEMENT SERVER - A method, a system and an apparatus for obtaining an address of a video transmission management server are disclosed. The method includes: sending a request for obtaining location information of the video transmission management server to a host parameter configuration server, where the video transmission management server is an ARQ server, a FCC server or a FEC server, or any combination thereof, and the host parameter configuration server is a DHCP server or a PPP server; and receiving a response returned by the host parameter configuration server, and obtaining the location information of the video transmission management server. In this way, the interaction procedure is simplified and the user experience is improved. | 02-09-2012 |
20120063462 | METHOD, APPARATUS AND SYSTEM FOR FORWARDING VIDEO DATA - 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. | 03-15-2012 |
20120155280 | Method and device for fast pushing unicast stream in fast channel change - The present invention discloses a method and a device for fast pushing a unicast stream in a Fast Channel Change (FCC), and relates to the field of Internet Protocol Television (IPTV). A server obtains a multicast join delay of a terminal, determines a minimum value of a data amount between a starting position of a fast unicast stream and a latest packet position according to the multicast join delay of the terminal, a decoding rate, a unicast push rate, and a lowest buffer data amount required for decoding, judges whether a latest I frame completely arrives according to a packet buffer state; and fast pushes the unicast stream starting from the latest I frame if the latest I frame completely arrives, and an arrived data amount starting from the latest I frame is greater than or equal to the minimum value. | 06-21-2012 |
20120304236 | CHANNEL CHANGING METHOD, APPARATUS, AND SYSTEM - Embodiments of the present disclosure provide a channel changing method, apparatus, and system. A network side device records in real time a timestamp of a media packet of a multicast media stream which enters a buffer, and a key frame which enters the buffer; when a terminal's channel changing request has been detected, obtains a first timestamp of a media packet which enters the buffer at a channel changing request moment, and a second timestamp of a media packet in which a key frame which is of the target channel and is the last to enter the buffer is located in the media packet; determines a timestamp difference between the first timestamp and the second timestamp; and transmits the timestamp difference and a burst media stream of the target channel to the terminal. In the embodiments of the present disclosure, a delay in playing the multicast media stream by the terminal is reduced. | 11-29-2012 |
20130166982 | METHOD, APPARATUS AND SYSTEM FOR SENDING AND RECEIVING A MEDIA STREAM - Embodiments of the present invention provide a method, an apparatus and a system for sending and receiving a media stream. In the embodiments of the present invention, during a transmission process of media content, if the packet loss occurs, and if retransmission still does not succeed after the retransmission has been attempted for finite times, the retransmission of the lost data packet is abandoned through notification of the retransmission suppression information, and transmission of a subsequent part of media stream is continued, which ensures uninterrupted transmission of the media stream, and avoids the occurrence of a screen mess of a picture, a picture jitter or pause, and even a program interrupt, thereby improving picture quality. | 06-27-2013 |
20130279347 | Faulty Link Detection Method, Apparatus, Node, and System - A faulty link detection method includes receiving statistical data that is reported by all nodes every preset quantity of packets that carry a program clock reference value. All the nodes collect statistical data starting from a unified program clock reference value. The quantity of packets lost between an upstream node and a downstream node among all the nodes is acquired according to the statistical data. A faulty link is determined according to the quantity of packets lost between the upstream node and the downstream node. | 10-24-2013 |
20140003247 | METHOD, NETWORK NODE, AND NETWORK SYSTEM FOR OFFLOADING NETWORK TRAFFIC | 01-02-2014 |
20140040500 | SYSTEM FOR PROCESSING STREAMING MEDIA SERVICE AND METHOD AND NETWORK DEVICE THEREOF - A system for processing a streaming media service and a method and a network device thereof are provided. The system includes a network device and an encoder. The network device has an embedded streaming function module. The encoder includes two egress ports, where the two egress ports of the encoder are connected to an active input port and a standby input port of the network device respectively. The encoder is configured to: receive a streaming media service signal, encode the streaming media service signal to generate a streaming media service coded signal, and send the streaming media service coded signal to the network device. The network device is configured to receive, by using the embedded streaming function module through the active input port or the standby input port, a streaming media service coded signal sent by the encoder, and provide the streaming media service coded signal for a terminal. | 02-06-2014 |
20140115062 | METHOD, APPARATUS, AND SYSTEM FOR TRANSMITTING MEDIA DATA BASED ON OTT - A method, an apparatus, and a system for transmitting media data based on OTT are disclosed. The method includes: receiving, by an OTT server, a media data request initiated by a user terminal, where the OTT server is connected to at least one cache server; determining, by the OTT server, a cache server from the at least one cache server according to a location and/or a capability of the at least one cache server; sending, by the OTT server, a notification message, which carries session information, to the user terminal and the determined cache server, so that the determined cache server receives a media data request, which carries session information, from the user terminal, and sends corresponding media data to the user terminal. | 04-24-2014 |