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    METHOD AND APPARATUS FOR EFFICIENT DATA TRANSMISSIONS IN HALF-DUPLEX COMMUNICATION SYSTEMS WITH LARGE PROPAGATION DELAYS
    46.
    发明申请
    METHOD AND APPARATUS FOR EFFICIENT DATA TRANSMISSIONS IN HALF-DUPLEX COMMUNICATION SYSTEMS WITH LARGE PROPAGATION DELAYS 审中-公开
    具有大传播延迟的半双工通信系统中有效数据传输的方法和设备

    公开(公告)号：WO2017004024A3

    公开(公告)日：2017-02-09

    申请号：PCT/US2016039795

    申请日：2016-06-28

    Applicant: QUALCOMM INC

    Inventor： WU QIANG ,  BLACK PETER JOHN ,  DAMNJANOVIC JELENA

    IPC: H04B7/185 ,  H04B7/204

    CPC classification number: H04B17/364 ,  H04B7/185 ,  H04B7/2041 ,  H04L5/14 ,  H04W24/08

    Abstract: Methods and apparatus for efficient transmission of data by half-duplex transceivers in satellite communication systems are provided. Time reference for the return link is skewed or time-lagged relative to the time reference for the forward link to reduce the amount of guard time required to separate return link transmission from forward link reception by the half-duplex transceiver of a user terminal. The guard time is determined based on a maximum differential round-trip propagation delay and transition times of the half-duplexer transceiver to switch between transmit and receive modes. In a satellite communication system in which a large number of active user terminals are present in a beam coverage, random time offsets are applied to spread approximately equal traffic loads across the time offsets.

    Abstract translation: 提供了在卫星通信系统中通过半双工收发器有效传输数据的方法和设备。 相对于正向链路的时间参考，返回链路的时间参考相对于时间参考偏斜或滞后，以减少将用户终端的半双工收发机的反向链路传输与正向链路接收分开所需的保护时间量。 保护时间基于最大差分往返传播延迟和半双工器收发器在发射和接收模式之间切换的转换时间来确定。 在其中在波束覆盖范围内存在大量活动用户终端的卫星通信系统中，应用随机时间偏移以在时间偏移上分布大致相等的业务负载。

    METHOD AND APPARATUS FOR SENDING INFORMATION VIA SELECTION OF RESOURCES USED FOR TRANSMISSION
    47.
    发明申请
    METHOD AND APPARATUS FOR SENDING INFORMATION VIA SELECTION OF RESOURCES USED FOR TRANSMISSION 审中-公开
    通过选择用于传输的资源发送信息的方法和装置

    公开(公告)号：WO2009143383A2

    公开(公告)日：2009-11-26

    申请号：PCT/US2009044911

    申请日：2009-05-21

    Applicant: QUALCOMM INC ,  TINNAKORNSRISUPHAP PEERAPOL ,  WU QIANG

    Inventor： TINNAKORNSRISUPHAP PEERAPOL ,  WU QIANG

    IPC: H04W48/12

    CPC classification number: H04W48/12

    Abstract: Techniques for transmitting information in a wireless network are described. In an aspect, information may be conveyed based on specific resources used to send a signal, e.g., a pilot. A pseudo-random function may receive the information to convey via the signal and possibly other information and may provide pseudo-random values, which may be used to select the resources to use to send the signal. In one design, a transmitter (e.g., a base station for a sector) may determine first information (e.g., a sector ID) to convey via a pilot and may also determine second information for absolute time (e.g. a pilot cycle index). The transmitter may determine resources (e.g., slots) to use to send the pilot based on the first and second information and possibly based further on a PN offset assigned to the sector. The transmitter may transmit the pilot in the determined resources.

    Abstract translation: 描述用于在无线网络中发送信息的技术。 在一方面，可以基于用于发送信号的特定资源（例如，飞行员）来传送信息。 伪随机函数可以接收经由信号和可能的其它信息传送的信息，并且可以提供伪随机值，其可以用于选择用于发送信号的资源。 在一种设计中，发射机（例如，用于扇区的基站）可以确定经由导频传送的第一信息（例如，扇区ID），并且还可以确定绝对时间的第二信息（例如，导频周期索引）。 发射机可以基于第一和第二信息确定用于发送导频的资源（例如，时隙），并且可能进一步基于分配给扇区的PN偏移。 发射机可以在确定的资源中发射导频。

    METHOD AND APPARATUS FOR ADAPTIVE RATE SELECTION IN A COMMUNICATION SYSTEM
    48.
    发明申请
    METHOD AND APPARATUS FOR ADAPTIVE RATE SELECTION IN A COMMUNICATION SYSTEM 审中-公开
    在通信系统中自适应速率选择的方法和装置

    公开(公告)号：WO0199385A2

    公开(公告)日：2001-12-27

    申请号：PCT/US0141051

    申请日：2001-06-18

    Applicant: QUALCOMM INC

    Inventor： SINDHUSHAYANA NAGABHUSHANA T ,  ESTEVES EDUARDO A S ,  ATTAR RASHID A ,  WU QIANG

    IPC: H04J13/04 ,  H04L1/00 ,  H04Q7/38 ,  H04L100

    CPC classification number: H04L1/0002

    Abstract: A method and an apparatus for adaptive data rate selection in a high data rate (HDR) communication system are disclosed. An exemplary HDR communication system defines a set of data rates, at which an access point (AP) may transmit data packets to an access terminal (AT). The transmission data rate is selected to maintain target packet error rate (PER). Each AT monitors signal quality metric of signals received from APs. An AT receiving forward link signals from multiple ATs identifies the AT associated with the highest quality forward link signal. The AT then evaluates the rate at which a tail probability of error is greater than or equal to a target tail probability of error. The AT then generates a prediction of a first data rate at which the PER of packets received from the identified AP will not exceed the target PER, and a prediction of a second data rate at which the PER of packets received from the selected AP will exceed the target PER. The AT uses the values of the first and second data rates to predict probabilities of selecting the first and the second data rates such that a throughput of the HDR system is maximized and the target PER is achieved. The predicted probabilities are then utilized as biases for a method identifying whether the first data rate or the second data rate will be requested from the AP. The disclosed method and apparatus may be extended to the full set of available data rates.

    Abstract translation: 公开了一种在高数据速率（HDR）通信系统中进行自适应数据速率选择的方法和装置。 示例性HDR通信系统定义了一组数据速率，接入点（AP）可在该组数据速率上向接入终端（AT）发送数据分组。 选择传输数据速率以维持目标分组错误率（PER）。 每个AT监视从AP接收的信号的信号质量度量。 从多个AT接收前向链路信号的AT识别与最高质量的前向链路信号相关联的AT。 AT然后评估误差的概率大于或等于目标尾部误差概率的速率。 然后，AT产生对从所识​​别的AP接收的分组的PER不超过目标PER的第一数据速率的预测，以及从所选择的AP接收的分组的PER将超过的第二数据速率的预测 目标PER。 AT使用第一和第二数据速率的值来预测选择第一和第二数据速率的概率，使得HDR系统的吞吐量最大化并且实现目标PER。 然后，将预测概率用作用于识别从AP请求第一数据速率或第二数据速率的方法的偏差。 所公开的方法和装置可以扩展到全部可用数据速率。

    IMPROVING EPFD COVERAGE FOR NGSO SATELLITES
    50.
    发明专利
    IMPROVING EPFD COVERAGE FOR NGSO SATELLITES 未知

    公开(公告)号：SG11201706094RA

    公开(公告)日：2017-10-30

    申请号：SG11201706094R

    申请日：2016-03-05

    Applicant: QUALCOMM INC

    Inventor： MARSH GENE WESLEY ,  WU QIANG ,  BLACK PETER JOHN ,  VASSILOVSKI DAN ,  GURELLI MEHMET IZZET

    IPC: H04B7/185

    Abstract: A method and apparatus for operating one or more satellites in a non-geosynchronous orbit (NGSO) satellite constellation are disclosed. In some aspects, the satellite may allocate a first frequency band to a first beam, and may allocate a second frequency band to a second beam. Then, if the first beam is disabled, the satellite may re-map the first frequency band from the first beam to the second beam. In this manner, frequency resources initially allocated to a disabled beam may be re-mapping to another, non-disabled beam.

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