Method and system for improving video quality during call handover

    公开(公告)号:US10306182B2

    公开(公告)日:2019-05-28

    申请号:US15575768

    申请日:2015-06-26

    Inventor: Eric Perraud

    Abstract: A user equipment (UE) and method of improving video call quality during handover are generally described. After determining that handover has started (306), the UE may suspend (308) frame transmission and store the frames. After determining that handover has completed (310), the UE may discard (312) frames whose age exceeds a predetermined percent of a latency deviation computed from a real-time transport control protocol report. The UE may determine whether transmission of the remaining frames would exceed a delay proportional to a video frame interval multiplied by an uplink bandwidth for a cell to which the UE is connected or a maximum bitrate of a guaranteed bitrate bearer multiplied by a typical period for a non-access stratum bandwidth and discard frames in order of decreasing age until neither the bitrate nor the delay is exceeded by the transmission.

    OPTIMIZING SYNCHRONIZATION OF AUDIO AND NETWORK TASKS IN VOICE OVER PACKET SWITCHED NETWORKS
    2.
    发明申请
    OPTIMIZING SYNCHRONIZATION OF AUDIO AND NETWORK TASKS IN VOICE OVER PACKET SWITCHED NETWORKS 有权
    通过分组交换网络优化音频和网络任务在语音中的同步

    公开(公告)号:US20160094605A1

    公开(公告)日:2016-03-31

    申请号:US14500119

    申请日:2014-09-29

    Abstract: A user equipment device (UE) comprises physical layer circuitry configured to transmit and receive radio frequency electrical signals with one or more nodes of a radio access network, an audio subsystem configured to generate frames of audio data, and processing circuitry. The processing circuitry is configured to calculate a time delay from generation of an audio data frame by the audio subsystem of the UE device to transmission of an audio data packet by the physical layer circuitry during a voice call, and decrease the time delay to a delay value that preserves a specified minimum time for delivery of the generated audio data frame to the physical layer circuitry to meet a scheduled transmission time of the audio data packet.

    Abstract translation: 用户设备设备(UE)包括物理层电路,其被配置为用无线电接入网络的一个或多个节点发送和接收射频电信号,配置成生成音频数据帧的音频子系统和处理电路。 处理电路被配置为计算由UE设备的音频子系统产生音频数据帧到语音呼叫期间由物理层电路传输音频数据分组的时间延迟,并将时延延迟到延迟 值,其保留用于将生成的音频数据帧传送到物理层电路的指定最小时间,以满足音频数据分组的调度传输时间。

    Technologies for link capability estimation

    公开(公告)号:US11044186B2

    公开(公告)日:2021-06-22

    申请号:US16320286

    申请日:2017-08-25

    Abstract: Technologies for link capability estimation are disclosed. A compute device may determine a maximum radio bitrate for a certain connection, such as an LTE connection to a specific cell antenna. The compute device may also determine a maximum downlink bitrate for that connection, and store both the maximum radio bitrate and the maximum downlink bitrate in a database on the compute device. At a later time, an application of the compute device may want to know an estimate of the current maximum downlink bitrate, such as for the purpose of selecting a bitrate in streaming a video. The compute device can determine the current maximum radio bitrate, and look for similar entries in the database. Based on entries in the database, a link capability estimation can be determined and provided to the application.

    METHOD AND SYSTEM FOR IMPROVING VIDEO QUALITY DURING CALL HANDOVER

    公开(公告)号:US20180124355A1

    公开(公告)日:2018-05-03

    申请号:US15575768

    申请日:2015-06-26

    Inventor: Eric Perraud

    CPC classification number: H04N7/147 H04W36/023

    Abstract: A user equipment (UE) and method of improving video call quality during handover are generally described. After determining that handover has started (306), the UE may suspend (308) frame transmission and store the frames. After determining that handover has completed (310), the UE may discard (312) frames whose age exceeds a predetermined percent of a latency deviation computed from a real-time transport control protocol report. The UE may determine whether transmission of the remaining frames would exceed a delay proportional to a video frame interval multiplied by an uplink bandwidth for a cell to which the UE is connected or a maximum bitrate of a guaranteed bitrate bearer multiplied by a typical period for a non-access stratum bandwidth and discard frames in order of decreasing age until neither the bitrate nor the delay is exceeded by the transmission.

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