METHODS FOR TRANSMITTING AND RECEIVING VIDEO DATA, TERMINAL DEVICE AND SERVER

    公开(公告)号:US20220303620A1

    公开(公告)日:2022-09-22

    申请号:US17222205

    申请日:2021-04-05

    Abstract: The disclosure provides methods for transmitting and receiving video data, and a terminal device and a server. The server layers an original video into a plurality of video data streams, embeds extended information including feature information of a video data stream in a specified video data stream and transmits the plurality of video data streams to corresponding channels respectively for transmitting. A multicast prediction model in the terminal device may output a multicast access strategy based on the feature information of the video data stream and user experience information of the currently played video, and then a multicast combination currently accessed by the terminal device is adjusted based on the multicast access strategy to obtain a better multicast combination in the current network transmission environment, such that video data streams of corresponding quantities and quality are received. The above methods executed by the server and the terminal device can realize control of network congestion without increasing bandwidth consumption.

    FILE REPAIR METHOD AND FILE REPAIR DEVICE FOR USER EQUIPMENT

    公开(公告)号:US20230199058A1

    公开(公告)日:2023-06-22

    申请号:US17818765

    申请日:2022-08-10

    CPC classification number: H04L67/06 G06F11/1435 H04L65/611 H04L67/141

    Abstract: In a file repair method for a user equipment (UE), the UE receives a target file multicasted by a network side in a file download transmission (FDT) manner. The method includes transmitting, by the UE, a multicast attempt repair request for the target file to the network side in a first time period after determining that the target file needs to be repaired, where the first time period does not exceed a time period of a Back-off time of a current session, receiving, by the UE, a feedback message transmitted by the network side, where the feedback message instructs the UE to perform multicast repair, and performing, by the UE, the multicast repair on the target file in response to the received feedback message.

    FILE REPAIR METHOD AND FILE REPAIR DEVICE FOR USER EQUIPMENT

    公开(公告)号:US20240305686A1

    公开(公告)日:2024-09-12

    申请号:US18670049

    申请日:2024-05-21

    CPC classification number: H04L67/06 G06F11/1435 H04L65/611 H04L67/141

    Abstract: In a file repair method for a user equipment (UE), the UE receives a target file multicasted by a network side in a file download transmission (FDT) manner. The method includes transmitting, by the UE, a multicast attempt repair request for the target file to the network side in a first time period after determining that the target file needs to be repaired, where the first time period does not exceed a time period of a Back-off time of a current session, receiving, by the UE, a feedback message transmitted by the network side, where the feedback message instructs the UE to perform multicast repair, and performing, by the UE, the multicast repair on the target file in response to the received feedback message.

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