公开(公告)号：US07477903B2

公开(公告)日：2009-01-13

申请号：US09858146

申请日：2001-05-15

申请人： Lawrence Wilcock ,  Rycharde Jeffery Hawkes ,  Michael P Spratt ,  Simon Edwin Crouch

发明人： Lawrence Wilcock ,  Rycharde Jeffery Hawkes ,  Michael P Spratt ,  Simon Edwin Crouch

IPC分类号： H04Q7/20

CPC分类号： H04W4/02 ,  G01S5/0226 ,  G08G1/20 ,  H04W8/04 ,  H04W8/08

摘要： Location data about a mobile entity (70) is periodically provided to a location-sensitive application, for example, a route-tracking application. The location data is updated at a frequency that is adaptively varied in dependence on the provision of location data about the mobile entity from other sources (45). The update frequency can also be made dependent on further factors such as: the motion of the mobile entity(“V”), the current environment of the mobile entity (“E”), and the progress of the location-sensitive application (“Z”).

公开(公告)号：US07305212B2

公开(公告)日：2007-12-04

申请号：US09905775

申请日：2001-07-13

申请人： Michael P Spratt

发明人： Michael P Spratt

IPC分类号： H04B7/00

CPC分类号： H04W40/18 ,  H04L45/00 ,  H04W40/20 ,  H04W40/22 ,  H04W88/04

摘要： A message is carried towards a target receiver (T) at a known location by one or more mobile entities (L,Q) that receive and pass on the message by short-range communication. The message includes an indication of the location of the target receiver (T). Before a mobile entity (L,Q) is used to carry the message, a determination is made as to whether the direction of travel of the mobile entity concerned is generally towards either the target receiver (T) or an intermediate staging post suitable for progressing the message towards the target receiver.

摘要翻译： 在一个或多个通过短距离通信接收和传递消息的移动实体（L，Q）在已知位置向目标接收机（T）传送消息。 该消息包括目标接收机（T）的位置的指示。 在移动实体（L，Q）被用于携带消息之前，确定所涉及的移动实体的行进方向是否一般朝向目标接收机（T）或适合进行的中间分段 向目标接收者发送消息。

公开(公告)号：US06983146B2

公开(公告)日：2006-01-03

申请号：US10162036

申请日：2002-06-03

申请人： Michael P Spratt

发明人： Michael P Spratt

IPC分类号： H04Q7/20 ,  H04B5/00

CPC分类号： G01S5/0009 ,  H04W64/00 ,  H04W84/10

摘要： A location determination method uses location data items that originate at known locations and are passed to, and diffused between, entities by short-range communication. Each location data item received by an entity specifies its originating location and a time value dependent on when it originated from that location. An entity derives its location from received location data items by effecting a weighted combination of the known locations specified in the received location data items, the weighting of the known location specified in each received location data item being dependent on the associated time value.

公开(公告)号：US06714161B2

公开(公告)日：2004-03-30

申请号：US10162037

申请日：2002-06-03

申请人： Michael P Spratt

发明人： Michael P Spratt

IPC分类号： G01S302

CPC分类号： H04W64/00 ,  G01S1/045 ,  G01S5/0009 ,  H04W84/10

摘要： A location determination method uses location data items that originate at known locations and are passed to, and diffused between, entities by short-range communication. Each location data item received by an entity includes a displacement value indicative of the displacement of the item since leaving a specified known location. This displacement value of a location data item has been updated to reflect movement of entities temporarily hosting the item and/or the range of the transmission hops made by the item. An entity derives its location from received location data items by effecting a weighted combination of the known locations specified in the received location data items, the weighting of the known location specified in each received location data item being dependent on the associated displacement value.

摘要翻译： 位置确定方法使用位于已知位置处的位置数据项，并通过短距离通信传递到实体之间并在实体之间扩散。 由实体接收的每个位置数据项包括指示离开指定的已知位置后项目的位移的位移值。 已经更新了位置数据项的位移值，以反映临时托管项目的实体的移动和/或项目所做的传输跳跃的范围。 实体通过实现在接收到的位置数据项目中指定的已知位置的加权组合，从接收的位置数据项目中导出其位置，每个接收的位置数据项中指定的已知位置的加权取决于相关的位移值。

公开(公告)号：US07027820B2

公开(公告)日：2006-04-11

申请号：US10057741

申请日：2002-01-23

申请人： Michael P Spratt

发明人： Michael P Spratt

IPC分类号： H04Q7/20

CPC分类号： H04W64/00 ,  G01S1/045 ,  G01S5/0009 ,  G01S5/0289 ,  H04L12/12 ,  H04W24/00 ,  H04W84/10 ,  H04W88/06

摘要： A static but movable device has a short-range wireless transceiver by which it can receive location data items. These items are usable by a location-data processing arrangement of the device to derive an estimate of the current location of the device. If the device is moved to another location, this estimate will cease to be valid. Accordingly, the device is provided with a move detection arrangement for detecting indications that the device may have been moved, these indications being used by a location-validity supervisor to determine whether or not the current location estimate is to be treated as still valid.

公开(公告)号：US06614393B2

公开(公告)日：2003-09-02

申请号：US10057742

申请日：2002-01-23

申请人： Michael P Spratt

发明人： Michael P Spratt

IPC分类号： G01S502

CPC分类号： G01S5/0289 ,  G01S5/0009 ,  G01S5/14 ,  G01S13/825 ,  H04L12/12 ,  H04W4/02 ,  H04W8/14 ,  H04W52/0216 ,  H04W64/00 ,  H04W76/28 ,  Y02D70/144 ,  Y02D70/164 ,  Y02D70/26

摘要： In order to reduce power consumption of battery-powered devices to which location data is to be dissemination by short range communication, the devices are arranged to wake-up to listen for location data at known times as judged against a reference time standard. This time standard is also available to the transmitters of location data which accordingly transmit their location data at the known times.