公开(公告)号：US20020187782A1

公开(公告)日：2002-12-12

申请号：US10162036

申请日：2002-06-03

Applicant: HEWLETT-PACKARD COMPANY

Inventor： Michael P. Spratt

IPC: H04Q007/20

CPC classification number: G01S5/0009 ,  H04W64/00 ,  H04W84/10

Abstract: 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.

Abstract translation: 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指定其起始位置和取决于何时从该位置起始的时间值。 实体通过在接收到的位置数据项中指定的已知位置的加权组合来实现其接收的位置数据项的位置，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时间值。

公开(公告)号：US20020186166A1

公开(公告)日：2002-12-12

申请号：US10162037

申请日：2002-06-03

Applicant: HEWLETT-PACKARD COMPANY

Inventor： Michael P. Spratt

IPC: G01S003/02

CPC classification number: H04W64/00 ,  G01S1/045 ,  G01S5/0009 ,  H04W84/10

Abstract: 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.

Abstract translation: 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：US20020045455A1

公开(公告)日：2002-04-18

申请号：US09905774

申请日：2001-07-13

Applicant: Hewlett-Packard Company

Inventor： Michael P. Spratt

IPC: H04Q007/20

CPC classification number: H04W4/02 ,  G01S1/045 ,  G01S5/0009 ,  G01S5/0289 ,  H04L12/12 ,  H04W48/08 ,  H04W64/00 ,  H04W64/006 ,  H04W84/10 ,  H04W84/18

Abstract: A location discovery method uses location data items that originate at known locations (X,Y) and are passed to, and diffused between, entities (A,B) by short-range communication. Each location data item received by an entity (A,B) indicates a maximum distance of the entity from one of the known locations (X,Y). Each entity (A,B) prior to using a location data item for location determination or transferring it to another entity, is operative to increase the maximum distance indicated by the location data item to take account of movement of the mobile entity since receiving that item. A mobile entity (A) effects location determination by finding locations (40) simultaneously consistent with the maximum distances (31,36) it knows of and any applicable route constraints for how the location data items passed to the mobile entity. An example constraint is that vehicle mobile entities should follow roads (1,2,3). The maximum distance indicated by a location data item may also be increased to take account of transmission hops between entities and, indeed, in the case of static entities, it is these increases that build the maximum distance value.

Abstract translation: 位置发现方法使用始发于已知位置（X，Y）的位置数据项，并通过短距离通信传递给实体（A，B）并在其间扩散。 由实体（A，B）接收的每个位置数据项指示实体与已知位置之一（X，Y）的最大距离。 在使用用于位置确定的位置数据项目或将其转移到另一个实体之前的每个实体（A，B）可操作以增加由位置数据项目指示的最大距离以考虑移动实体从接收到该项目以来的移动 。 移动实体（A）通过查找与其知道的最大距离（31,36）同时一致的位置（40）和对位置数据项如何传递到移动实体的任何适用路线约束来影响位置确定。 一个示例性的约束是车辆移动实体应该遵循道路（1,2,3）。 也可以增加位置数据项所指示的最大距离，以考虑实体之间的传输跳数，实际上在静态实体的情况下，建立最大距离值是增加的。

公开(公告)号：US20020009971A1

公开(公告)日：2002-01-24

申请号：US09905775

申请日：2001-07-13

Applicant: Hewlett-Packard Company

Inventor： Michael P. Spratt

IPC: H04B005/00

CPC classification number: H04W40/18 ,  H04L45/00 ,  H04W40/20 ,  H04W40/22 ,  H04W88/04

Abstract: 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.

Abstract translation: 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）或适于进行的中间分段 向目标接收者发送消息。