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    System and method for providing contention channel organization for broadband satellite access in a communications network
    1.
    发明授权
    System and method for providing contention channel organization for broadband satellite access in a communications network 有权
    在通信网络中为宽带卫星接入提供竞争信道组织的系统和方法

    公开(公告)号：US06980800B2

    公开(公告)日：2005-12-27

    申请号：US10074759

    申请日：2002-02-12

    申请人： Anthony Noerpel ,  Channasandra Ravishankar ,  Xiaoping He ,  Abheek Saha

    发明人： Anthony Noerpel ,  Channasandra Ravishankar ,  Xiaoping He ,  Abheek Saha

    IPC分类号： H04W74/08 ,  H04Q7/20 ,  H04B7/212

    CPC分类号： H04W74/0833

    摘要： Two types of contention channels are used to accommodate broadband packet data in a satellite communication network. A first contention channel is used by unsynchronized user terminals to access the system and request a traffic channel. The first contention channel is of a sufficient duration to accommodate a RACH message, as well as the timing uncertainty between user terminals within a given spot beam. A second contention channel is shorter in duration than the first contention channel, and is narrowband, so that more than one second contention channel may be transmitted within the bandwidth of the broadband traffic channels. The second contention channels are used by synchronized user terminals for transmitting packet RACH, or PRACH, messages. The more efficient nature of the PRACH channels accommodates the increased overhead associated with bursty packet data, without the capacity cost of the longer duration RACH channel.

    摘要翻译： 两种类型的竞争通道用于在卫星通信网络中容纳宽带分组数据。 不同步的用户终端使用第一争用通道访问系统并请求业务信道。 第一争用信道具有足够的持续时间以适应RACH消息，以及在给定点波束内的用户终端之间的定时不确定性。 第二争用信道的持续时间比第一竞争信道短，并且是窄带，使得可以在宽带业务信道的带宽内传输多于一个的第二争用信道。 第二争用信道由同步用户终端用于发送分组RACH或PRACH消息。 PRACH信道的更高效的性质适应与突发分组数据相关联的增加的开销，而不需要较长持续时间的RACH信道的容量成本。

    MAC layer protocol for a satellite based packet switched services
    2.
    发明授权
    MAC layer protocol for a satellite based packet switched services 有权
    用于基于卫星的分组交换服务的MAC层协议

    公开(公告)号：US06778509B1

    公开(公告)日：2004-08-17

    申请号：US09714788

    申请日：2000-11-16

    申请人： Channasandra Ravishankar ,  Anthony Noerpel ,  Mahesh Kamath ,  Abheek Saha ,  James Hobza

    发明人： Channasandra Ravishankar ,  Anthony Noerpel ,  Mahesh Kamath ,  Abheek Saha ,  James Hobza

    IPC分类号： H04B7212

    CPC分类号： H04B7/18589 ,  H04W8/24 ,  H04W72/0413 ,  H04W72/042 ,  H04W76/10 ,  H04W84/06

    摘要： An approach for minimizing response times in transporting traffic over a packet radio communication system is disclosed. A terminal transmits a packet resource request message that specifies user terminal information using a contention channel according to a prescribed protocol. A gateway station receives the packet resource request message and transmits an assignment message that specifies a channel assignment based upon the user terminal information, wherein the terminal is configured to transmit the packets over a channel is based on the channel assignment. This approach has particular applicability to a satellite communication system.

    摘要翻译： 公开了一种用于最小化在分组无线电通信系统上传输业务的响应时间的方法。 终端根据规定的协议使用竞争信道发送指定用户终端信息的分组资源请求消息。 网关站接收分组资源请求消息，并且基于用户终端信息发送指定信道分配的分配消息，其中终端被配置为基于信道分配通过信道发送分组。 这种方法特别适用于卫星通信系统。

    METHOD AND SYSTEM FOR ACQUIRING EPHEMERIS INFORMATION
    5.
    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。

    In-call DTMF transport for geostationary mobile satellite communication system
    6.
    发明授权
    In-call DTMF transport for geostationary mobile satellite communication system 有权
    用于对地静止移动卫星通信系统的通话DTMF传输

    公开(公告)号：US06650895B1

    公开(公告)日：2003-11-18

    申请号：US09447696

    申请日：1999-11-23

    申请人： Channasandra Ravishankar ,  David Roos ,  Anthony Noerpel ,  Chandra Joshi ,  James Hobza ,  Prabir Datta ,  Yi Chen

    发明人： Channasandra Ravishankar ,  David Roos ,  Anthony Noerpel ,  Chandra Joshi ,  James Hobza ,  Prabir Datta ,  Yi Chen

    IPC分类号： H04Q720

    CPC分类号： H04B7/19 ,  H04M3/2281 ,  H04M3/533 ,  H04Q1/45

    摘要： A system and a methodology to improve the end-user quality of service both in terms of response time and reliability for the transport of in-call DTMF signals in wireless systems, particularly in geostationary mobile satellite systems. The methodology encompasses several techniques to provide acceptable end-to-end quality of service for DTMF. A technique is applicable for transport of DTMF in the wireless subscriber to network direction, where DTMF digits are carried in the form of an out-band message. The central part of the technique is to allow multiple key presses in the same message, thereby increasing efficiency and throughput in long-delay environment. Another technique utilizes the vocoder's functionality to carry DTMF in-band, thereby reducing system complexity. The scheme makes the use of an integrated DTMF detector which can classify a given frame of signal into several classes so that the DTMF encoded packet can carry a unique pattern across the air-interface to the voice decoder at AT, which is capable of identifying the pattern. Another technique pertains to the use of a message based DTMF transport between two-ATs on a separate logical channel with a unique Service Access point Identifier (SAPI) providing guaranteed service for DTMF transport in an AT-AT call.

    摘要翻译： 在无线系统，特别是对地静止移动卫星系统中，在无线系统中传输呼叫中的DTMF信号的响应时间和可靠性方面，提高最终用户服务质量的系统和方法。 该方法包括几种为DTMF提供可接受的端到端服务质量的技术。 一种技术适用于将无线用户中的DTMF传输到网络方向，其中DTMF数字以带外消息的形式携带。 该技术的核心部分是允许同一消息中的多个按键按压，从而在长时间延迟环境中提高效率和吞吐量。 另一种技术利用声码器的功能来携带DTMF带内，从而降低系统的复杂性。 该方案使用集成的DTMF检测器，其可以将给定的信号帧分类成多个等级，使得DTMF编码的分组可以在AT的语音解码器的空中接口上携带唯一的模式，其能够识别 模式。 另一种技术涉及在独立的逻辑信道上的两个AT之间使用基于消息的DTMF传输与唯一的服务接入点标识符（SAPI），其在AT-AT呼叫中为DTMF传输提供有保证的服务。

    Paging reception assurance in a multiply registered wireless transceiver
    9.
    发明授权
    Paging reception assurance in a multiply registered wireless transceiver 失效
    在多重注册的无线收发器中寻呼接收保证

    公开(公告)号：US06282178B1

    公开(公告)日：2001-08-28

    申请号：US09115101

    申请日：1998-07-13

    申请人： Anthony Noerpel ,  Xiaoping He

    发明人： Anthony Noerpel ,  Xiaoping He

    IPC分类号： A63B6700

    CPC分类号： H04B7/2125 ,  H04B7/18517 ,  H04B7/18539 ,  H04B7/18543 ,  H04B7/18558 ,  H04B7/18567 ,  H04B7/18571 ,  H04B7/1858 ,  H04B7/18582 ,  H04B7/19 ,  H04B7/2041 ,  H04W28/14 ,  H04W52/0203 ,  H04W52/0216 ,  H04W72/0413 ,  H04W72/042 ,  H04W74/00 ,  H04W76/10 ,  H04W76/25 ,  H04W80/00 ,  H04W84/06 ,  Y02D70/1222 ,  Y02D70/164 ,  Y02D70/20 ,  Y02D70/446

    摘要： An approach for selecting an asynchronous paging interval involves selecting a set of possible paging schemes for one wireless system; selecting a paging interval for another wireless system that is asynchronous with the paging schemes selected for the one wireless system; determining, after some number of paging repetitions, the probability of collision between a first paging channel in the one wireless system, and a second paging channel in the other wireless system; reselecting the paging interval for the other wireless system, asynchronous with the paging schemes selected for the one wireless system, and repeating the determining of the probability, until after some number of page repetitions, the probability reaches a prescribed minimum; and reselecting the paging interval for the other wireless system, asynchronous with the paging schemes selected for the one wireless system, and repeating the determining of the probability, until the number of paging repetitions needed to reach the prescribed minimum is reaches a selected minimum.

    摘要翻译： 用于选择异步寻呼间隔的方法涉及为一个无线系统选择一组可能的寻呼方案; 为与所述一个无线系统选择的寻呼方案异步的另一无线系统选择寻呼间隔; 在一些无线系统中的第一寻呼信道与另一个无线系统中的第二寻呼信道之间确定一些寻呼重复次数之间的冲突概率; 重新选择其他无线系统的寻呼间隔，与为一个无线系统选择的寻呼方案异步，并重复确定概率，直到几页重复之后，概率达到规定的最小值; 并重新选择另一无线系统的寻呼间隔，与为一个无线系统选择的寻呼方案异步，并重复确定概率，直到达到规定最小值所需的寻呼重复次数达到所选择的最小值。