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    Method and system of providing efficient packetized voice communcations and data bearers in mobile satellite systems
    1.
    发明授权
    Method and system of providing efficient packetized voice communcations and data bearers in mobile satellite systems 有权
    在移动卫星系统中提供有效的分组语音通信和数据承载的方法和系统

    公开(公告)号：US09391690B2

    公开(公告)日：2016-07-12

    申请号：US13586224

    申请日：2012-08-15

    申请人： Je-Hong Jong ,  Maruf Mohammad ,  Harish Ramchandran ,  Jun Xu ,  Channasandra Ravishankar

    发明人： Je-Hong Jong ,  Maruf Mohammad ,  Harish Ramchandran ,  Jun Xu ,  Channasandra Ravishankar

    IPC分类号： H04B7/185

    CPC分类号： H04B7/18513

    摘要： A broadband satellite communications system comprises forward error correction (FEC) encoder/decoder, interleaver/deinterleaver, puncturing/de-puncturing, scrambler/descrambler, bit to symbol mapping/de-mapping devices, modulator/demodulator, transmit and receive filter; operating in a time-division multiple access (TDMA) system where information is sent in a burst-by-burst fashion during the assigned time slot; supporting diverse traffic types such as voice over internet protocol (VOIP), control messages (DACCH) and keep alive burst (KAB) during silence period and multiple data rates.

    摘要翻译： 宽带卫星通信系统包括前向纠错（FEC）编码器/解码器，交织器/解交织器，删截/去穿孔，加扰/解扰器，比特对符号映射/去映射设备，调制器/解调器，发射和接收滤波器; 在时分多址（TDMA）系统中操作，其中在分配的时隙期间以突发方式发送信息; 支持多种流量类型，如互联网语音协议（VOIP），控制消息（DACCH）和保持活动突发（KAB）在静默期和多个数据速率。

    Method and system of providing link adaptation for maximizing throughput in mobile satellite systems
    3.
    发明授权
    Method and system of providing link adaptation for maximizing throughput in mobile satellite systems 有权
    提供链路自适应的方法和系统，以最大限度地提高移动卫星系统的吞吐量

    公开(公告)号：US09088335B2

    公开(公告)日：2015-07-21

    申请号：US13586561

    申请日：2012-08-15

    申请人： Je-Hong Jong ,  Jun Xu ,  Channasandra Ravishankar

    发明人： Je-Hong Jong ,  Jun Xu ,  Channasandra Ravishankar

    IPC分类号： H04B7/185

    CPC分类号： H04B7/18513

    摘要： Various approaches are introduced to provide link adaptation to maximize the resource utilization of the satellite network: (i) a method to adapt the transmission rate for packet voice and data traffics; (ii) a method to control the transmit power of packet voice and data channels; and (iii) a method to accomplish the feedback loop in a secured and correct manner.

    摘要翻译： 引入各种方法以提供链路适应以最大化卫星网络的资源利用率：（i）适应分组语音和数据业务的传输速率的方法; （ii）控制分组话音和数据信道的发射功率的方法; 和（iii）以安全和正确的方式完成反馈回路的方法。

    METHOD AND SYSTEM FOR ACQUIRING EPHEMERIS INFORMATION
    4.
    发明申请
    METHOD AND SYSTEM FOR ACQUIRING EPHEMERIS INFORMATION 有权
    获取信息的方法和系统

    公开(公告)号：US20120146849A1

    公开(公告)日：2012-06-14

    申请号：US13326209

    申请日：2011-12-14

    申请人： Jun Xu ,  Yash Vasavada ,  Mike Parr ,  Channasandra Ravishankar ,  Anthony Noerpel ,  Je-Hong Jong

    发明人： Jun Xu ,  Yash Vasavada ,  Mike Parr ,  Channasandra Ravishankar ,  Anthony Noerpel ,  Je-Hong Jong

    IPC分类号： G01S19/46 ,  G01S19/12

    CPC分类号： G01S19/05 ,  G01S19/258 ,  G01S19/27 ,  G01S19/33

    摘要： An approach provides for conversion of global positioning system (GPS) data. A user terminal receives positioning data from a base station, wherein the positioning data is received in a second format, and wherein the second format was derived from ephemeris data broadcast via a global positioning system (GPS) in a first format. The user terminal converts the positioning data from the second format into a third format that is compatible with a protocol of the GPS system, and determines a first fix using the third format of the positioning data.

    摘要翻译： 一种方法提供了全球定位系统（GPS）数据的转换。 用户终端从基站接收定位数据，其中以第二格式接收定位数据，并且其中第二格式是通过第一格式的全球定位系统（GPS）从星历数据广播导出的。 用户终端将来自第二格式的定位数据转换为与GPS系统的协议兼容的第三格式，并且使用定位数据的第三格式确定第一固定。

    Method for iterative estimation of global parameters
    5.
    发明授权
    Method for iterative estimation of global parameters 有权
    全局参数的迭代估计方法

    公开(公告)号：US09099776B2

    公开(公告)日：2015-08-04

    申请号：US13403532

    申请日：2012-02-23

    申请人： Yash Vasavada ,  Xiaoling Huang ,  Ambarish Purohit ,  Channasandra Ravishankar ,  John E. Corrigan, III

    发明人： Yash Vasavada ,  Xiaoling Huang ,  Ambarish Purohit ,  Channasandra Ravishankar ,  John E. Corrigan, III

    IPC分类号： H04B1/00 ,  H04B15/00 ,  H01Q3/26

    CPC分类号： H01Q3/267

    摘要： A method for iterative estimation of a set of unknown channel parameters in a beamforming network including determining a first order estimate of offsets at measurement nodes and an estimate of the confidence in the initial estimate of the measurement nodes' offsets, and iterating, until a desired estimation accuracy is obtained, determining an improved estimate of a parameter set, and the confidence in the estimates, using the prior estimate of the offsets at the measurement nodes and determining an improved estimate of the offsets at the measurement nodes and the associated confidence values using the prior estimate of the parameter set and the corresponding confidence values.

    摘要翻译： 一种用于迭代估计波束形成网络中的一组未知信道参数的方法，包括确定测量节点处的偏移量的一阶估计，以及对测量节点偏移的初始估计中的置信度的估计，并且迭代，直到所需的 使用在测量节点处的偏移的先前估计来确定参数集合的改进的估计和估计的置信度并且使用以下方法确定测量节点处的偏移的改进的估计和相关联的置信度值： 参数集的先前估计和相应的置信度值。

    Inter-layer communications in wireless networks including a high latency connection
    9.
    发明授权
    Inter-layer communications in wireless networks including a high latency connection 有权

    公开(公告)号：US10455475B1

    公开(公告)日：2019-10-22

    申请号：US16228662

    申请日：2018-12-20

    申请人： Sandeep Ahluwalia ,  Channasandra Ravishankar ,  Charles Barnett

    发明人： Sandeep Ahluwalia ,  Channasandra Ravishankar ,  Charles Barnett

    IPC分类号： H04W4/00 ,  H04W36/32 ,  H04W36/08 ,  H04W36/00 ,  H04W84/06

    摘要： A system and method for interfacing a User Equipment (UE) to a Core Network (CN) is disclosed. The method including: providing a high latency connection; providing a satellite network portal (SNP) to connect to the UE via a satellite link, wherein the SNP includes a Media Access Control (MAC) layer for managing the satellite link and a Radio Layer Control (RLC) layer of the UE; interfacing the UE to the CN with a Point of Presence (POP) including a Radio Resource Control (RRC) layer of the UE and a Packet Data Convergence Protocol (PDCP) layer of the UE; and establishing a session between the CN and the UE via the RRC layer, the PDCP layer and the RLC layer. In the method, network traffic, between the SNP and the POP, over the high latency connection has a latency greater than 10 milliseconds (ms), the session does not timeout due to the latency of the high latency connection, and the MAC layer schedules bandwidth for the establishing over the satellite link.