公开(公告)号：WO2007067852A3

公开(公告)日：2008-02-14

申请号：PCT/US2006061145

申请日：2006-11-21

Applicant: MOTOROLA INC ,  BELCEA JOHN M

Inventor： BELCEA JOHN M

IPC: G01S19/03 ,  G01S19/21 ,  H04W64/00

CPC classification number: H04W64/00

Abstract: The present invention provides a method for computing the position of a mobile device (200,405) operating in a wireless network (100). The system includes a receiver, adapted to receive respective signals from each of at least four reference devices (410,415,420,425) at the mobile device (405), each respective signal including information representing a Time of Flight between the mobile device (405) and the associated fixed reference device. The system includes a processor (215), to estimate the location of the mobile device (200,405) by computing at least three Apollonius circles (500,600,700) between the mobile device (405) and each of the at least three different pairs of fixed reference devices, wherein the computed Apollonius circles are indicative of the distance between the mobile device (405) and each of the associated fixed reference devices of each pair; and calculating the location of the mobile device (405) as the intersection of the computed Apollonius circles.

Abstract translation: 本发明提供一种用于计算在无线网络（100）中操作的移动设备（200,405）的位置的方法。 该系统包括适于从移动设备（405）处的至少四个参考设备（410,415,420,425）中的每一个接收相应信号的接收机，每个相应的信号包括表示移动设备（405）与相关联的移动设备（405）之间的飞行时间的信息 固定参考装置。 该系统包括处理器（215），通过计算移动设备（405）和至少三个不同的固定参考设备对中的至少三个阿波罗尼乌斯圆圈（500,600,700）来估计移动设备（200,405）的位置 ，其中所计算的阿波罗尼乌斯圆表示移动设备（405）与每对相关联的固定参考设备之间的距离; 以及计算移动设备（405）的位置作为所计算的阿波罗尼乌斯圈的交点。

公开(公告)号：WO2010014315A3

公开(公告)日：2010-03-25

申请号：PCT/US2009048541

申请日：2009-06-25

Applicant: MOTOROLA INC ,  BELCEA JOHN M ,  ALAPURANEN PERTTI O

Inventor： BELCEA JOHN M ,  ALAPURANEN PERTTI O

IPC: G01S3/808 ,  G01S5/02

CPC classification number: G01S5/0215 ,  G01S5/0221 ,  G01S11/02 ,  G01S13/76

Abstract: A method for measuring the time of arrival of radio signals within a network comprises receiving the received signals including at least a first pseudorandom code and a second pseudorandom code from at least one other node; identifying a frequency difference between the node and the other node using a phase difference between each of a maximum value of a cross-correlation provided by the first pseudorandom code and the second pseudorandom code; applying the frequency difference to the reception of the received signal; and calculating the time of arrival of the received signal comprising a time, measured with a local clock, when the cross-correlation has achieved the maximum value.

Abstract translation: 一种用于测量网络内的无线电信号的到达时间的方法，包括：从至少一个其他节点接收包括至少第一伪随机码和第二伪随机码的接收信号; 使用由第一伪随机码提供的互相关的最大值和第二伪随机码中的每一个之间的相位差来识别节点和另一个节点之间的频率差; 将频率差应用于接收信号的接收; 以及当互相关达到最大值时，计算包括用本地时钟测量的时间的接收信号的到达时间。

公开(公告)号：WO2010030665A3

公开(公告)日：2010-06-17

申请号：PCT/US2009056360

申请日：2009-09-09

Applicant: MOTOROLA INC ,  BELCEA JOHN M

Inventor： BELCEA JOHN M

IPC: G01S13/10 ,  G01S7/02

CPC classification number: G01S7/021 ,  H04K3/226 ,  H04K3/822 ,  H04K2203/18

Abstract: A method provides for identifying short radar signals in presence of interfering signals from various sources applicable to U-NII devices. The method includes collecting a set of information about received interfering signals until the End-Of-Burst (EOB) condition is identified. When the EOB is identified, the set information about the received train of interfering signals is processed. The algorithm selects the time interval between two pulses as a possible Pulse Repetition Interval (PRI) and checks if the same time interval or a multiple of it can be found between other pulses in the collected set, with some small acceptable error. Pulses matching the criteria are considered as potential radar pulses. When at least one pulse has been identified as a potential radar pulse for a number of times larger than a predefined limit, it is concluded that that pulse has been generated by a radar installation.

Abstract translation: 一种方法提供在存在来自适用于U-NII设备的各种源的干扰信号的情况下识别短雷达信号。 该方法包括收集关于接收的干扰信号的一组信息，直到识别出结束（EOB）条件。 当识别到EOB时，处理关于所接收的干扰信号序列的设置信息。 该算法选择两个脉冲之间的时间间隔作为可能的脉冲重复间隔（PRI），并检查在收集的集合中的其他脉冲之间是否可以发现相同的时间间隔或其倍数，并具有一些小的可接受的误差。 匹配标准的脉冲被认为是潜在的雷达脉冲。 当至少一个脉冲已经被识别为潜在的雷达脉冲大于预定极限的次数时，可以得出结论，脉冲是由雷达装置产生的。

公开(公告)号：WO2007076301B1

公开(公告)日：2008-02-21

申请号：PCT/US2006062136

申请日：2006-12-15

Applicant: MOTOROLA INC ,  BELCEA JOHN M ,  ALAPURANEN PERTTI O

Inventor： BELCEA JOHN M ,  ALAPURANEN PERTTI O

IPC: H04W64/00

CPC classification number: G01S5/0205 ,  G01S5/0289 ,  H04W64/00

Abstract: A wireless device for determining distances between other wireless communications devices in a wireless communication network The wireless device receives an incoming message signal from at least one other wireless device in the network The message signal includes a fame of arrival of a ranging signal previously transmitted by the wireless device Responsive to receiving the message signal, the wireless device receives one or more incoming ranging signals from the other wireless device Each ranging signal is received in a frequency range that is substantially less than the frequency range in which the messaging signal was received

Abstract translation: 一种用于确定无线通信网络中的其他无线通信设备之间的距离的无线设备。所述无线设备从所述网络中的至少一个其他无线设备接收输入消息信号。所述消息信号包括先前由所述无线通信设备发送的测距信号的到达名称 无线设备响应于接收到消息信号，无线设备从其他无线设备接收一个或多个输入的测距信号。每个测距信号在基本上小于接收到消息收发信号的频率范围的频率范围内被接收

公开(公告)号：WO2008057667A3

公开(公告)日：2008-07-10

申请号：PCT/US2007079512

申请日：2007-09-26

Applicant: MOTOROLA INC ,  BELCEA JOHN M ,  ALAPURANEN PERTTI O

Inventor： BELCEA JOHN M ,  ALAPURANEN PERTTI O

IPC: H04B1/44

CPC classification number: G01S5/021 ,  G01S5/0289 ,  G01S5/06 ,  G01S11/08 ,  H04W24/00 ,  H04W48/08 ,  H04W48/16 ,  H04W56/002 ,  H04W84/18

Abstract: A method for measuring the Time Of Arrival of signals in a communications network is provided. A transmitter emits a beacon that is a digital message of known content, followed by timing information. The message is preceded by a pseudo-random binary phase-shift keying (BPSK) modulated sequence that allows the receiver to synchronize on the received signal using the autocorrelation method. During the synchronization process, are computed the approximated Time Of Arrival (TOA) and approximated frequency difference between the local oscillator and the received signal. The content of the beacon message is then used for correcting the approximated TOA and the frequency differences, providing results of very high precision of TOA. The timing information that follows the beacon is used for network clock synchronization and for computing the distances between network nodes.

Abstract translation: 提供了一种用于测量通信网络中的信号的到达时间的方法。 发射机发射作为已知内容的数字消息的信标，随后是定时信息。 该消息之前是伪随机二进制相移键控（BPSK）调制序列，其允许接收机使用自相关方法对接收到的信号进行同步。 在同步过程中，计算近似的到达时间（TOA）和本地振荡器与接收信号之间的近似频率差。 然后使用信标消息的内容来校正近似的TOA和频率差，提供非常高的TOA精度的结果。 信标后面的定时信息用于网络时钟同步和计算网络节点之间的距离。

公开(公告)号：WO2007076301A2

公开(公告)日：2007-07-05

申请号：PCT/US2006062136

申请日：2006-12-15

Applicant: MOTOROLA INC ,  BELCEA JOHN M ,  ALAPURANEN PERTTI O

Inventor： BELCEA JOHN M ,  ALAPURANEN PERTTI O

IPC: H04W64/00

CPC classification number: G01S5/0205 ,  G01S5/0289 ,  H04W64/00

Abstract: A wireless communication device (e.g., 102) employs a method and apparatus for determining distances between wireless communications devices in a wireless communication network (100). The wireless device receives an incoming message signal (117) from at least one other wireless device (e.g., 101, 103-104) in the network. The message signal(s) includes a time of arrival of a ranging signal (121) previously transmitted by the wireless device. Responsive to receiving the message signal(s), the wireless device receives one or more incoming ranging signal(s) (120) from the other wireless device(s). Each ranging signal is received in a frequency range that is substantially less than the frequency range in which the messaging signal(s) was received. Having received the message signal(s) and the ranging signal(s), the wireless device then determines the distance between itself and the other wireless device(s) based at least on receipt of the ranging signal(s) and, more preferably, further based on the contents of the message signal(s).

Abstract translation: 无线通信设备（例如，102）采用用于确定无线通信网络（100）中的无线通信设备之间的距离的方法和装置。 无线设备从网络中的至少一个其他无线设备（例如，101,103-104）接收输入消息信号（117）。 消息信号包括先前由无线设备发送的测距信号（121）的到达时间。 响应于接收到消息信号，无线设备从其他无线设备接收一个或多个输入测距信号（120）。 在基本上小于接收到消息收发信号的频率范围的频率范围内接收每个测距信号。 在接收到消息信号和测距信号之后，无线设备至少基于接收到测距信号来确定自身与其它无线设备之间的距离，更优选地， 进一步基于消息信号的内容。

公开(公告)号：WO2005001619A3

公开(公告)日：2005-04-14

申请号：PCT/US2004017836

申请日：2004-06-04

Applicant: MESHNETWORKS INC ,  BELCEA JOHN M

Inventor： BELCEA JOHN M

IPC: G01S5/02 ,  G06F20060101 ,  H04B7/005 ,  H04B7/212 ,  H04L12/28 ,  H04L12/56 ,  H04L29/08 ,  H04W24/00 ,  H04W40/00 ,  H04W52/46 ,  H04W64/00 ,  H04W74/04 ,  H04W84/18 ,  H04W92/18

CPC classification number: G01S5/0252 ,  H04L67/12 ,  H04L67/18 ,  H04W24/00 ,  H04W40/00 ,  H04W52/46 ,  H04W64/00 ,  H04W74/04 ,  H04W84/18 ,  H04W92/18

Abstract: A system (Fig. 1) and method (Fig. 6) for providing a MAC protocol that allows the collection of a large number of range measurements, and based upon such measurements, permits a very precise computation of the location of terminals at a location. Specifically, the system and method operates with Mobile Terminals (110-1 - 110-n in Fig. 1), Fixed References (120-1 - 120-n in Fig. 1) and at least one Main Control (140-1 - 140-n in Fig. 1), wherein a MAC protocol defines the sequence of messages exchanged between each of the Mobile Terminals, Fixed Reference and the Main Control for assuring the data needed for computing the location is received.

Abstract translation: 用于提供MAC协议的系统（图1）和方法（图6），其允许收集大量的距离测量，并且基于这样的测量，允许非常精确地计算位置处的终端的位置 。 具体地，该系统和方法利用移动终端（图1中的110-1-110-n），固定参考（图1中的120-1-120-n）和至少一个主控制（140-1- 140-n），其中MAC协议定义在每个移动终端，固定参考和主控制之间交换的消息序列，以确保接收到用于计算所述位置所需的数据。

公开(公告)号：WO03079611A8

公开(公告)日：2004-04-08

申请号：PCT/US0307516

申请日：2003-03-12

Applicant: MESHNETWORKS INC ,  BELCEA JOHN M

Inventor： BELCEA JOHN M

IPC: H04B7/26 ,  H04B7/005 ,  H04B7/15 ,  H04L12/26 ,  H04B1/66 ,  H04B7/185 ,  H04J1/02 ,  H04J3/18

CPC classification number: H04W52/267 ,  H04W52/22 ,  H04W52/242 ,  H04W52/46

Abstract: A system and method for selecting an appropriate transmit power and data rate at which a communication signal is transmitted over a link between nodes in a wireless ad-hoc communication network based on factors such as variations in path loss in the link, fading conditions, noise level estimation and overall link quality. The system and method dynamically computes path loss in the link based on characteristics of a message transmitted from the source node (102, 106, 107) to the destination node (102, 106, 107), determines a noise factor at the destination node, and calculates the power level and rate at which the data is transmitted over the link based on the computed path loss and noise factor. Accordingly, the system and method are capable of determining the proper level of transmit power and data rate for assuring that the destination node will receive the data transmitted by the source node at a reliability of at least 90%.

Abstract translation: 一种用于选择通过无线自组织通信网络中的节点之间的链路发送通信信号的适当发射功率和数据速率的系统和方法，所述系统和方法基于诸如链路中的路径损耗，衰落条件，噪声 水平估计和总体链路质量。 系统和方法基于从源节点（102,106,107）发送到目的地节点（102,106,107）的消息的特性来动态地计算链路中的路径损耗，确定目的地节点处的噪声因子， 并基于计算的路径损耗和噪声因子计算通过链路传输数据的功率电平和速率。 因此，系统和方法能够确定发送功率和数据速率的适当水平，以确保目的地节点将以至少90％的可靠性接收由源节点发送的数据。

公开(公告)号：WO2006124221A3

公开(公告)日：2009-04-16

申请号：PCT/US2006015925

申请日：2006-04-27

Applicant: MESHNETWORKS INC ,  BELCEA JOHN M

Inventor： BELCEA JOHN M

IPC: G06F15/173 ,  G06F7/00 ,  H04L12/56 ,  H04W40/24 ,  H04W84/18

CPC classification number: H04L47/10 ,  H04L47/12 ,  H04L47/14 ,  H04L47/50 ,  H04L47/621 ,  H04W40/246 ,  H04W84/18

Abstract: A method for routing data packets from a source to a destination in a wireless communication network comprising a plurality of nodes, wherein each node is in uplink-downlink association with at least one neighboring node, and wherein each node comprises a registration table identifying all downlink nodes that are associated with the node, the method comprising: sending an Open Stream message from a source node which specifies a destination node; and receiving the Open Stream message at the uplink node of the source node, wherein the uplink node relays the Open Stream message to the destination node if the destination node is registered in the registration table of the uplink node.

Abstract translation: 一种用于在包括多个节点的无线通信网络中从源到目的地路由数据分组的方法，其中每个节点与至少一个相邻节点处于上行链路 - 下行链路关联中，并且其中每个节点包括标识所有下行链路的注册表 与所述节点相关联的节点，所述方法包括：从指定目的地节点的源节点发送Open Stream消息; 以及在所述源节点的上行链路节点处接收所述Open Stream消息，其中如果所述目的地节点被登记在所述上行链路节点的所述注册表中，则所述上行链路节点将所述Open Stream消息中继到所述目的地节点。

公开(公告)号：WO2007005148B1

公开(公告)日：2007-11-29

申请号：PCT/US2006020439

申请日：2006-05-25

Applicant: MESHNETWORKS INC ,  BELCEA JOHN M

Inventor： BELCEA JOHN M

IPC: H04B7/212

CPC classification number: H04W56/002 ,  H04W56/0065

Abstract: A system and method for synchronizing a wireless network comprising a first node operable pursuant to a first time-division multiple access (TDMA) scheme and a second node operable pursuant to a second TDMA scheme, wherein the first TDMA scheme and the second TDMA scheme each comprise a plurality of ticks, and wherein the first node and the second node each comprise a tick counter for determining the time moment at which a transmission is made or at which a signal is received by the node.

Abstract translation: 一种用于同步无线网络的系统和方法，所述无线网络包括可依照第一时分多址（TDMA）方式操作的第一节点和根据第二TDMA方案可操作的第二节点，其中所述第一TDMA方案和所述第二TDMA方案各自 包括多个刻度，并且其中第一节点和第二节点各自包括用于确定进行发送的时刻或节点接收信号的时刻的刻度计数器。