Clock synchronization for multi-processor/multi-chipset solution
    51.
    发明授权
    Clock synchronization for multi-processor/multi-chipset solution 有权
    多处理器/多芯片组解决方案的时钟同步

    公开(公告)号:US09300713B2

    公开(公告)日:2016-03-29

    申请号:US14262994

    申请日:2014-04-28

    Abstract: Methods, systems, and devices are described for media synchronization. Multi-stream media processes may include media streams captured with respect to different clock rates. Multi-processor implementations may involve separate clocks associated with different media streams, such as audio and video, respectively. The separate clocks may tend to drift from one another, becoming further out of sync as time passes. Selecting a reference time of one of the processors to function as a “wall clock,” recording frame capture times with respect to the reference time, accounting for propagation delays, and transmitting frame capture times in terms of the reference time may aid in AV synchronization at a device where audio and video streams are received.

    Abstract translation: 描述了媒体同步的方法,系统和设备。 多流媒体处理可以包括关于不同时钟速率捕获的媒体流。 多处理器实现可以分别涉及与不同媒体流(例如音频和视频)相关联的单独的时钟。 单独的时钟可能趋向于彼此漂移,随着时间的过去而变得更加不同步。 选择其中一个处理器作为“挂钟”的参考时间,相对于参考时间记录帧捕获时间,考虑传播延迟和根据参考时间传输帧捕获时间可以有助于AV同步 在接收音频和视频流的设备上。

    APPLICATION NOTIFICATION AND SERVICE SELECTION USING IN-BAND SIGNALS
    52.
    发明申请
    APPLICATION NOTIFICATION AND SERVICE SELECTION USING IN-BAND SIGNALS 有权
    应用通知和服务选择使用带内信号

    公开(公告)号:US20130035105A1

    公开(公告)日:2013-02-07

    申请号:US13649186

    申请日:2012-10-11

    Abstract: In-band signaling may be used between two stations to determine the capabilities of the stations and/or send actionable information between the stations participating in the call. The in-band signals are indicative that the station that is transmitting the in-band signals can use in-band signals as a conduit to send and/or receive various types of information and are used to probe whether the receiving station can operate similarly. If the receiving station detects and reacts to the in-band signals, then both stations can pass control information and data as well as enhancements between each other, without any need of infrastructure upgrade and/or quality compromise to legacy phone users. Additionally or alternatively, out of band interfaces and watermarking may also be used.

    Abstract translation: 可以在两个站之间使用带内信令来确定站的能力和/或在参与呼叫的站之间发送可动作信息。 带内信号指示正在发送带内信号的站可以使用带内信号作为管道发送和/或接收各种类型的信息,并且用于探测接收站是否可以类似地操作。 如果接收站检测并对带内信号作出反应,则两台站都可以传递控制信息和数据以及彼此之间的增强,而无需基础设施升级和/或对传统电话用户的质量损害。 另外或替代地,也可以使用带外接口和水印。

    Minimization of drive test for dual connectivity

    公开(公告)号:US12160377B2

    公开(公告)日:2024-12-03

    申请号:US17424446

    申请日:2020-01-22

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify that the UE is operating in a dual-connectivity configuration with a master node (MN) and a secondary node (SN). The UE may receive at least one request that the UE report MDT measurements. The UE may perform a first portion of measurements associated with the first base station and perform a second portion of measurements associated with the second base station. The UE may perform the measurements while the UE is operating in the dual-connectivity configuration. The UE may transmit one or more reports including information indicative of the first portion of measurements, information indicative of the second portion of measurements, or both.

    Precise point positioning (PPP)-based real time kinematic (RTK) correction

    公开(公告)号:US11906637B2

    公开(公告)日:2024-02-20

    申请号:US17455630

    申请日:2021-11-18

    Inventor: Min Wang

    CPC classification number: G01S19/40 G01S19/43

    Abstract: A device may use Precise Point Positioning (PPP) correction information to generate Real Time Kinematic (RTK) correction information that can be sent to other devices for RTK-based positioning. In particular, according to some embodiments, the first device having access to PPP correction information may obtain the PPP correction information and generate RTK correction information by determining a virtual RTK base station location and generating, based on the PPP correction information, a virtual Multi-Constellation Multi-Frequency (MCMF) measurement corresponding to the determined virtual RTK base station location. This virtual MCMF measurement (and/or data derived therefrom) can then be sent to other devices as RTK correction information.

    Multi-frequency real-time kinematic (RTK) measurements for global navigation satellite system (GNSS) receivers

    公开(公告)号:US11592580B2

    公开(公告)日:2023-02-28

    申请号:US16998892

    申请日:2020-08-20

    Abstract: A Real-Time Kinematic (RTK) solution is provided to mobile devices having multi-constellation, multi-frequency (MCMF) functionality, in which a single base station may have a baseline much farther than traditional base station and where the high accuracy positioning is achieved in a relatively short period of time. To enable this, embodiments involve modeling of an ionosphere-free carrier phase corresponding to combinations of at least three signals received from one or more satellites. The modeling retains the integer nature of carrier phase ambiguities, thereby allowing for fast convergence in determining the integer ambiguity of the carrier phases.

    Global navigation satellite system precise positioning engine with estimated ionosphere

    公开(公告)号:US11550065B2

    公开(公告)日:2023-01-10

    申请号:US17106772

    申请日:2020-11-30

    Abstract: Disclosed are various techniques for wireless communication. In one aspect, a user equipment (UE) may receive, from a satellite vehicle (SV), a signal of a first frequency band, estimate a first ionospheric delay residual error based on the signal of the first frequency band, calculate a first pseudorange measurement and a first carrier phase measurement based on the first ionospheric delay residual error, and estimate a position using the first pseudorange measurement and the first carrier phase measurement. In some aspects, the ionospheric delay residual error is estimated via a Klobuchar equation. In some aspects, the position is estimated using ultra-long baseline real-time kinematics (RTK) positioning.

    Techniques for identifying a scheduling request occasion for connected discontinuous reception

    公开(公告)号:US11503620B2

    公开(公告)日:2022-11-15

    申请号:US16947957

    申请日:2020-08-25

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify, based at least in part a determination to transmit one or more packets, a scheduling request (SR) occasion in which to transmit an SR for uplink resources to transmit the one or more packets, the SR occasion occurring prior to a start of a connected discontinuous reception (CDRX) on duration of the UE. The UE may determine whether the SR occasion occurs within a threshold amount of time prior to the start of the CDRX on duration of the UE. The UE may transmit the SR in the SR occasion based at least in part on the determination of whether the SR occasion occurs within the threshold amount of time prior to the start of the CDRX on duration of the UE. Numerous other aspects are provided.

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