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    OPTIMIZED KERNEL FOR CONCURRENT STREAMING SESSIONS
    1.
    发明公开
    OPTIMIZED KERNEL FOR CONCURRENT STREAMING SESSIONS 审中-公开

    公开(公告)号：US20240039663A1

    公开(公告)日：2024-02-01

    申请号：US18218364

    申请日：2023-07-05

    Applicant: Rovi Guides, Inc.

    Inventor： Rajendran Pichaimurthy ,  Dolphin Masilamany Santha ,  Gyanveer Singh ,  Prakash Viswanathan

    IPC: H04L1/1829 ,  H04L1/1867 ,  H04L65/61

    CPC classification number: H04L1/1832 ,  H04L1/187 ,  H04L1/1877 ,  H04L1/1838 ,  H04L65/61

    Abstract: Systems and methods are described for streaming content to multiple devices from a shared sliding window buffer in kernel space, thereby reducing memory resource use and minimizing context/mode switching between kernel space and user space. For example, concurrent streaming sessions may be seen, e.g., as a live multimedia stream. If a live video is being transmitted as a multicast stream to many devices, rather than each device having a corresponding sliding window buffer in kernel space, each device will share a shared sliding buffer in kernel space. The sliding window buffer size will be at least large enough to stream the slowest connection speed and can be, e.g., multiple times as large as necessary, in case of the issues beyond the worst-case scenario. The system then transmits chunks of the content from the shared sliding window buffer to each of the plurality of client devices.

    Discarding and Retaining Physical Data Channels
    6.
    发明申请
    Discarding and Retaining Physical Data Channels 审中-公开
    丢弃和保留物理数据通道

    公开(公告)号：US20170054541A1

    公开(公告)日：2017-02-23

    申请号：US14832199

    申请日：2015-08-21

    Applicant: Telefonaktiebolaget L M Ericsson (publ)

    Inventor： Jonas Fröberg Olsson ,  Erik Eriksson ,  Pål Frenger ,  Martin Hessler

    IPC: H04L5/00 ,  H04W72/04

    CPC classification number: H04L5/0055 ,  H04L1/1838 ,  H04L1/1877 ,  H04W72/044

    Abstract: A first channel for carrying Layer 2 messages carries data that will not be retransmitted and for which decoding-related information need not be retained by the receiving node in the event of an unsuccessful decoding of the data, while a second channel carries data that will be retransmitted in the event that a negative acknowledgement is received by the transmitting node. In an example method, first and second subsets of Layer 2 messages are received on first and second physical data channels, respectively. Decoding-related information for unsuccessfully decoded messages in the first subset is retained for use with subsequent retransmissions, while decoding-related information for unsuccessfully decoded messages in the second subset is discarded without waiting for retransmissions. Acknowledgements or negative acknowledgements are sent for messages in the first subset, but may or may not be sent for messages in the second subset, in various embodiments.

    Abstract translation: 携带第2层消息的第一信道携带不会重传的数据，并且在数据解码不成功的情况下，接收节点不需要保留哪个解码相关信息，而第二信道携带将被 在发送节点接收到否定确认的情况下重传。 在示例性方法中，分别在第一和第二物理数据信道上接收第二层消息的第一和第二子集。 与第一子集中未成功解码的消息相关的解码相关信息被保留以用于随后的重传，而在第二子集中用于未成功解码的消息的解码相关信息被丢弃，而不等待重传。 对于第一子集中的消息发送致谢或否定确认，但是在各种实施例中可以发送或不发送第二子集中的消息。

    Adaptive forward error correction (FEC) system and method
    7.
    发明授权
    Adaptive forward error correction (FEC) system and method 有权
    自适应前向纠错（FEC）系统和方法

    公开(公告)号：US09577682B2

    公开(公告)日：2017-02-21

    申请号：US14370030

    申请日：2012-12-31

    Applicant: Adi Rozenberg

    Inventor： Adi Rozenberg

    IPC: H03M13/35 ,  H03M13/29 ,  H04L1/18

    CPC classification number: H03M13/35 ,  H03M13/2909 ,  H03M13/353 ,  H04L1/18 ,  H04L1/1812 ,  H04L1/1819 ,  H04L1/1874 ,  H04L1/1877 ,  H04L1/1896

    Abstract: In a network for reliable transfer of packets from a transmitter to a receiver using an Internet Protocol (IP), a system for packet recovery comprising a detection block (detector) for packet loss detection and a probe device (probe) for Forward Error Correction (FEC) packets transmission, wherein the detector includes means for sending a missing packet report to the probe upon detecting a missing packet, wherein the probe includes means for storing received packets, sending FEC packets and adapting a size of the FEC packets to an error rate computed from the missing packet reports, wherein the size of FEC packets is made larger or smaller responsive to the error rate increasing or decreasing, respectively, and wherein the probe is located close to the transmitter for reliable packets reception and the detector is located close to the receiver for reliably detecting loss of packets in a receiver's surroundings.

    Abstract translation: 在用于使用因特网协议（IP）从发射机到接收机可靠地传送分组的网络中，包括用于分组丢失检测的检测块（检测器）和用于前向纠错的探测设备（探测器）的分组恢复系统 FEC）分组传输，其中所述检测器包括用于在检测到丢失分组时向所述探测器发送丢失分组报告的装置，其中所述探测器包括用于存储接收分组的装置，发送FEC分组并使所述FEC分组的大小适应于错误率 从丢失的分组报告中计算出来，其中响应于错误率增加或减小而使FEC分组的大小分别变大或更小，并且其中探测器位于靠近发射机的位置，用于可靠的分组接收，并且检测器位于 用于可靠地检测接收机周围的分组丢失的接收机。

    Method and apparatus for packet retransmission in a mobile communication system
    10.
    发明授权
    Method and apparatus for packet retransmission in a mobile communication system 有权
    移动通信系统中的分组重传的方法和装置

    公开(公告)号：US09455804B2

    公开(公告)日：2016-09-27

    申请号：US13639642

    申请日：2011-04-04

    Applicant: Soeng Hun Kim ,  Ok Seon Lee ,  Kyeong In Jeong

    Inventor： Soeng Hun Kim ,  Ok Seon Lee ,  Kyeong In Jeong

    IPC: H04W4/00 ,  H04L1/18

    CPC classification number: H04L1/1887 ,  H04L1/1864 ,  H04L1/1877

    Abstract: The present invention relates to a packet retransmission method of a terminal accessing a base station in contention-based access mode, and the method includes transmitting an uplink packet to the base station; receiving, when the base station fails decoding the uplink packet, a retransmission request message transmitted by the base station; and initiating, when the retransmission request message is received, a Radio Link Control (RLC) retransmission. According to the present invention, the terminal operating in contention-based access mode initiates RLC retransmission in reception of an HARQ NACK from the base station. Accordingly, it is possible to perform the RLC retransmission immediately without necessity of waiting for the expiry of HARQ RTT as in the HARQ retransmission, resulting in reduction of packet retransmission delay.

    Abstract translation: 本发明涉及一种在基于竞争的接入模式下接入基站的终端的分组重传方法，该方法包括向基站发送上行分组; 当所述基站对所述上行链路分组进行解码失败时，接收由所述基站发送的重传请求消息; 以及当接收到所述重传请求消息时发起无线电链路控制（RLC）重传。 根据本发明，在基于竞争的接入模式下工作的终端在基站接收HARQ NACK时发起RLC重发。 因此，可以如HARQ重传那样立即执行RLC重传而不必等待HARQ RTT的到期，导致分组重传延迟的减少。

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