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    Remote initiated messaging apparatus and method in a two way wireless data communications network
    3.
    发明授权
    Remote initiated messaging apparatus and method in a two way wireless data communications network 失效
    在双向无线数据通信网络中的远程发起的消息收发设备和方法

    公开(公告)号：US5734963A

    公开(公告)日：1998-03-31

    申请号：US471980

    申请日：1995-06-06

    申请人： Brendan T. Fitzgerald ,  Andrew T. Powshok ,  Donald K. Belcher ,  Jeffrey R. White ,  Albert D. Darby, Jr. ,  Rodney Nelson

    发明人： Brendan T. Fitzgerald ,  Andrew T. Powshok ,  Donald K. Belcher ,  Jeffrey R. White ,  Albert D. Darby, Jr. ,  Rodney Nelson

    IPC分类号： H04L12/56 ,  H04W4/12 ,  H04W16/14 ,  H04W68/00 ,  H04W74/04 ,  H04W74/06 ,  H04Q7/20

    CPC分类号： H04W74/06 ,  H04W4/12 ,  H04W48/10 ,  H04W84/022

    摘要： A two-way communications system provides ubiquitous wireless data communication services, such as throughout the continental United States, by using a network of only a few, widely distributed radio base station (RBS) sites and the existing paging network infrastructure. A network hub or mission operation center (MOC) coordinates the operation of the paging systems and RBSs from a central location. The paging network infrastructure is used as an outbound link over which each of the field units is regularly provided with a outbound data message containing information on the available frequencies and time slots the field units can use to transmit inbound data messages to the RBSs. If any of the field units desires to transmit data to MOC, the field unit selects an available frequency from the outbound data message, and transmits its data at the selected available frequency and time. At least one of the RBSs will receive the inbound message and route it to the MOC which then sends an outbound acknowledgment message, via the paging network, to the field unit which sent the inbound message.

    摘要翻译： 双向通信系统通过仅使用几个广泛分布的无线电基站（RBS）站点和现有的寻呼网络基础设施的网络来提供无处不在的无线数据通信服务，例如遍布美国大陆的无线数据通信服务。 网络中心或任务操作中心（MOC）协调来自中心位置的寻呼系统和RBS的操作。 寻呼网络基础设施用作出站链路，每个现场单元定期地提供出站数据消息，该出站数据消息包含关于现场单元可用于向RBS发送入站数据消息的可用频率和时隙的信息。 如果任何现场单元希望向MOC发送数据，则现场单元从出站数据消息中选择可用频率，并以所选择的可用频率和时间发送其数据。 至少一个RBS将接收入站消息并将其路由到MOC，然后MOC通过寻呼网络向发送入站消息的现场单元发送出站确认消息。

    Low cost wide area network for data communication using outbound message specifying inbound message time and frequency
    4.
    发明授权
    Low cost wide area network for data communication using outbound message specifying inbound message time and frequency 失效
    低成本广域网，用于使用出站消息指定入站消息时间和频率进行数据通信

    公开(公告)号：US5765112A

    公开(公告)日：1998-06-09

    申请号：US468004

    申请日：1995-06-06

    申请人： Brendan T. Fitzgerald ,  Andrew T. Powshok ,  Donald K. Belcher ,  Jeffrey R. White ,  Albert D. Darby, Jr. ,  Rodney Nelson

    发明人： Brendan T. Fitzgerald ,  Andrew T. Powshok ,  Donald K. Belcher ,  Jeffrey R. White ,  Albert D. Darby, Jr. ,  Rodney Nelson

    IPC分类号： H04W84/02 ,  H04B7/00

    CPC分类号： H04W84/022

    摘要： A two-way communications system that provides ubiquitous wireless data communication services, such as throughout the continental United States, by using a network of only a few, widely distributed radio base station (RBS) sites and the existing paging network infrastructure. The paging network infrastructure is used as an outbound link to request data from the remote field units. The outbound page message indicates a time and frequency at which the RBSs can expect to receive data from the field units. A network hub or message operations center (MOC) coordinates the operation of the paging systems and RBSs from a central location. For example, the MOC determines an available HF frequency and time for a particular field unit to transmit, and then issues the request for data to the field unit using the existing paging network infrastructure. The field units make use of paging receivers, and an HF transmitter to report remote data such as a geoposition or other sensor data when requested to do so.

    摘要翻译： 通过使用只有少数广泛分布的无线电基站（RBS）站点和现有寻呼网络基础设施的网络，提供普遍存在的无线数据通信服务的双向通信系统，例如遍布美国大陆的无线数据通信服务。 寻呼网络基础设施用作出站链路以从远程现场单元请求数据。 出站页面消息指示RBS可以期望从现场单元接收数据的时间和频率。 网络集线器或消息操作中心（MOC）协调来自中心位置的寻呼系统和RBS的操作。 例如，MOC确定特定现场单元发送的可用HF频率和时间，然后使用现有的寻呼网络基础设施向现场单元发出对数据的请求。 现场单元利用寻呼接收机和HF发射机在请求时报告诸如地理位置或其他传感器数据的远程数据。

    Technique for determining propagating and clear frequency to be used in wide area wireless data communications network
    7.
    发明授权
    Technique for determining propagating and clear frequency to be used in wide area wireless data communications network 失效
    确定在广域无线数据通信网络中使用的传播和清除频率的技术

    公开(公告)号：US5640442A

    公开(公告)日：1997-06-17

    申请号：US719307

    申请日：1996-09-24

    申请人： Brendan T. Fitzgerald ,  Andrew T. Powshok ,  Donald K. Belcher ,  Jeffrey R. White ,  Albert D. Darby, Jr. ,  Rodney Nelson

    发明人： Brendan T. Fitzgerald ,  Andrew T. Powshok ,  Donald K. Belcher ,  Jeffrey R. White ,  Albert D. Darby, Jr. ,  Rodney Nelson

    IPC分类号： H04W72/06 ,  H04W84/02 ,  H04Q7/08

    CPC分类号： H04W72/085 ,  H04W84/022

    摘要： A two-way communications system that provides ubiquitous wireless data communication services, such as throughout the continental United States, by using a network of only a few, widely distributed radio base station (RBS) sites and the existing paging network infrastructure. The paging network infrastructure is used as an outbound link to request data from the remote field units. The outbound page message indicates a time and HF frequency at which the RBSs can expect to receive inbound data from the field units. A network hub or mission operation center (MOC) determines a radio frequency which is expected to be propagating and clear at the time that a particular field unit is to use the frequency as an inbound link. The MOC then issues the request for data to the field unit using an existing inexpensive wireless system such as the paging network infrastructure. The field units make use of paging receivers, and an HF transmitter to report remote data such as a geoposition or other sensor data when requested to do so.

    摘要翻译： 通过使用只有少数广泛分布的无线电基站（RBS）站点和现有寻呼网络基础设施的网络，提供普遍存在的无线数据通信服务的双向通信系统，例如遍及美国大陆的无线数据通信服务。 寻呼网络基础设施用作出站链路以从远程现场单元请求数据。 出站页面消息指示RBS可以期望从现场单元接收入站数据的时间和HF频率。 网络集线器或任务操作中心（MOC）确定在特定现场单元将频率用作入站链路时期望传播和清除的射频。 然后，MOC使用诸如寻呼网络基础设施的现有廉价无线系统向现场单元发出数据请求。 现场单元利用寻呼接收机和HF发射机在请求时报告诸如地理位置或其它传感器数据的远程数据。