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    Downlink observed time difference measurements
    1.
    发明授权
    Downlink observed time difference measurements 有权
    下行观察时差测量

    公开(公告)号：US06356763B1

    公开(公告)日：2002-03-12

    申请号：US09186192

    申请日：1998-11-04

    申请人： Ari Kangas ,  Erik Larsson ,  Sven Fischer ,  Patrik Lundqvist ,  Mats Cedervall

    发明人： Ari Kangas ,  Erik Larsson ,  Sven Fischer ,  Patrik Lundqvist ,  Mats Cedervall

    IPC分类号： H04Q720

    CPC分类号： H04W64/00 ,  G01S1/026 ,  G01S5/10 ,  H04W56/0075

    摘要： A mobile communication station in a wireless communication network is used to measure the respective times of arrival of radio signals respectively transmitted by a plurality of radio transmitters in the network. The mobile communication station is provided with real time difference information indicative of differences between a time base used by a radio transmitter serving the mobile communication station and respective time bases used by the other radio transmitters. The mobile communication station determines, in response to the real time difference information and relative to the time base used by the radio transmitter serving the mobile communication station, a plurality of points in time at which the respective radio signals are expected to arrive at the mobile communication station. For each radio signal, the mobile communication station monitors for arrival of the radio signal during a period of time after the point in time at which the radio signal is expected to arrive.

    摘要翻译： 使用无线通信网络中的移动通信站来测量由网络中的多个无线电发射机分别发送的无线电信号的到达时间。 移动通信站具有指示由服务于移动通信站的无线电发射机使用的时基与由其他无线电发射机使用的各个时基之间的差异的实时差信息。 移动通信站响应于实时时差信息和相对于服务于移动通信站的无线电发射机使用的时基，确定各个无线电信号预期到达移动台的多个时间点 通讯站。 对于每个无线电信号，移动通信站在无线电信号预期到达的时间点之后的一段时间内监视无线电信号的到达。

    Methods and arrangements for locating a mobile telecommunications station
    2.
    发明授权
    Methods and arrangements for locating a mobile telecommunications station 失效
    用于定位移动电信站的方法和安排

    公开(公告)号：US06295455B1

    公开(公告)日：2001-09-25

    申请号：US09332282

    申请日：1999-06-11

    申请人： Sven Fischer ,  Ari Kangas ,  Patrik Lundqvist ,  Erik Larsson

    发明人： Sven Fischer ,  Ari Kangas ,  Patrik Lundqvist ,  Erik Larsson

    IPC分类号： H04Q720

    CPC分类号： H04W64/00

    摘要： In a mobile telecommunications network, a mobile station (MS) is configured to generate and uplink transmit position measuring data prior to and/or during a call connection, without noticeably interrupting the user or degrading the quality of service provided. Position measuring data can be uplink transmitted over an idle traffic channel during a call set up operation for a brief moment while the call connection is being completed. Position measuring data can also be uplink transmitted during a call by selectively stealing data positions or burst positions in the uplink signal. The position measuring data is received by a plurality of base stations and uplink signal characteristics are measured and collected. The measured uplink signal characteristic data from several base stations is then used to determine a current approximate geographical location of the mobile station.

    摘要翻译： 在移动电信网络中，移动台（MS）被配置为在呼叫连接之前和/或期间生成和上行发送位置测量数据，而不会明显地中断用户或降低提供的服务质量。 当呼叫连接正在完成时，位置测量数据可以在呼叫建立操作期间通过空闲业务信道被上行链路传输。 位置测量数据也可以在呼叫期间通过选择性地窃取上行链路信号中的数据位置或突发位置来上传。 位置测量数据被多个基站接收，并且测量和收集上行链路信号特性。 然后使用来自几个基站的所测量的上行链路信号特征数据来确定移动台的当前大致地理位置。

    Making time of arrival measurements
    3.
    发明授权
    Making time of arrival measurements 有权
    准时到达测量

    公开(公告)号：US06470185B2

    公开(公告)日：2002-10-22

    申请号：US09162079

    申请日：1998-09-28

    申请人： Ari Kangas ,  Sven Fischer ,  Erik Larsson ,  Patrik Lundqvist

    发明人： Ari Kangas ,  Sven Fischer ,  Erik Larsson ,  Patrik Lundqvist

    IPC分类号： H04Q722

    CPC分类号： H04W64/00 ,  G01S5/06

    摘要： A time of arrival measurement apparatus is used to measure the time of arrival of a radio signal transmitted by a mobile communication station operating in a wireless mobile communication network. The apparatus is provided with information indicative of a predetermined point in time at which the radio signal is to be transmitted. The time of arrival measurement apparatus monitors for arrival of the radio signal only during a period of time after the predetermined point in time. The time of arrival measurement apparatus also receives information from which it can determine an informational content of the radio signal.

    摘要翻译： 使用到达时间测量装置来测量由在无线移动通信网络中操作的移动通信站发送的无线电信号的到达时间。 该装置具有指示要发送无线电信号的预定时间点的信息。 到达时间测量装置仅在预定时间点之后的一段时间内监视无线电信号的到达。 到达时间测量装置还接收可以确定无线电信号的信息内容的信息。

    Downlink observed time difference measurements
    4.
    发明授权
    Downlink observed time difference measurements 有权
    下行观察时差测量

    公开(公告)号：US06490454B1

    公开(公告)日：2002-12-03

    申请号：US09131150

    申请日：1998-08-07

    申请人： Ari Kangas ,  Erik Larsson ,  Sven Fischer ,  Patrik Lundqvist

    发明人： Ari Kangas ,  Erik Larsson ,  Sven Fischer ,  Patrik Lundqvist

    IPC分类号： H04Q720

    CPC分类号： H04W64/00 ,  G01S1/026 ,  G01S5/10 ,  H04W56/0075

    摘要： A mobile communication station in a wireless communication network is used to measure the respective times of arrival of radio signals respectively transmitted by a plurality of radio transmitters in the network. The mobile communication station is provided with real time difference information indicative of differences between a time base used by a radio transmitter serving the mobile communication station and respective time bases used by the other radio transmitters. The mobile communication station determines, in response to the real time difference information and relative to the time base used by the radio transmitter serving the mobile communication station, a plurality of points in time at which the respective radio signals are expected to arrive the mobile communication station. For each radio signal, the mobile communication station monitors for arrival of the radio signal during a period of time after the point in time at which the radio signal is expected to arrive.

    摘要翻译： 使用无线通信网络中的移动通信站来测量由网络中的多个无线电发射机分别发送的无线电信号的到达时间。 移动通信站具有指示由服务于移动通信站的无线电发射机使用的时基与由其他无线电发射机使用的各个时基之间的差异的实时差信息。 移动通信站响应于实时时差信息和相对于服务于移动通信站的无线电发射机使用的时基，确定各个无线电信号预期到达移动通信的多个时间点 站。 对于每个无线电信号，移动通信站在无线电信号预期到达的时间点之后的一段时间内监视无线电信号的到达。

    Method and system for determining position of a cellular mobile terminal
    5.
    发明授权
    Method and system for determining position of a cellular mobile terminal 失效
    用于确定蜂窝移动终端的位置的方法和系统

    公开(公告)号：US6011974A

    公开(公告)日：2000-01-04

    申请号：US935421

    申请日：1997-09-23

    申请人： Mats Cedervall ,  Patrik Lundqvist

    发明人： Mats Cedervall ,  Patrik Lundqvist

    IPC分类号： H04B7/26 ,  G01S5/00 ,  G01S5/14 ,  G01S13/87 ,  G01S19/25 ,  H04W64/00 ,  H04Q7/20

    CPC分类号： H04W64/00 ,  G01S13/878 ,  G01S5/0036 ,  G01S5/14

    摘要： A method and system are disclosed by which a round-trip calculation is used to determine the distance between a mobile radio station (MS) and a radio base station (BS) using the apparent uplink and downlink signal propagation air-times (e.g., T-up and T-down). As such, no absolute time reference is required. The MS and BS report to a service node in the mobile network the local departure and arrival times of the uplink and downlink signals, and calculate the apparent air-times, T-up and T-down. The distance, D, between the MS and BS can be calculated as D=c(T-up+T-down)/2, where "c" equals the speed of light. The distances, D1, D2 and D3, to at least three base stations whose locations are known, can be used in a triangulation algorithm to determine the MS's position.

    摘要翻译： 公开了一种方法和系统，通过该方法和系统，使用往返计算来使用表观上行链路和下行链路信号传播空气时间来确定移动无线电台（MS）和无线电基站（BS）之间的距离（例如，T -up和T-down）。 因此，不需要绝对时间参考。 MS和BS向移动网络中的服务节点报告上行链路和下行链路信号的本地出发和到达时间，并计算表观空中时间，T-up和T-down。 MS和BS之间的距离D可以计算为D = c（T-up + T-down）/ 2，其中“c”等于光速。 距离D1，D2和D3到位置已知的至少三个基站可以用于三角测量算法中以确定MS的位置。

    Method and system for facilitating timing of base stations in an asynchronous CDMA mobile communications system
    6.
    发明授权
    Method and system for facilitating timing of base stations in an asynchronous CDMA mobile communications system 有权
    用于促进异步CDMA移动通信系统中的基站的定时的方法和系统

    公开(公告)号：US06526039B1

    公开(公告)日：2003-02-25

    申请号：US09243095

    申请日：1999-02-02

    申请人： Erik Bengt Lennart Dahlman ,  Karim Jamal ,  Johan Anders Nyström ,  Mats Cedervall ,  Patrik Lundqvist

    发明人： Erik Bengt Lennart Dahlman ,  Karim Jamal ,  Johan Anders Nyström ,  Mats Cedervall ,  Patrik Lundqvist

    IPC分类号： H04B7216

    CPC分类号： H04B1/7083 ,  H04W56/002 ,  H04W92/10

    摘要： A method and system are disclosed for facilitating the timing (e.g., the known relative timing differences) of base stations (BSs) in asynchronous CDMA mobile communications systems. A plurality of mobile stations (MSs) measure the relative time differences between various pairs of BSs, and these measurements are stored by the BSs. A source BS sends to an MS, in a neighbor list message, estimates of the relative time difference between the source BS and each of the BSs on the neighboring cell list. Each BS on the list can maintain a relative time difference estimate table, which can be updated continuously from the reports received from MSs. Subsequently, the BSs can send entries from this table to the MS in the neighbor list message. Using this novel technique, the BSs have known relative timing differences. Consequently, when the MS initiates a cell-search for a candidate BS, the MS already has an estimate of the timing of that BS as compared to its source BS. As such, the resulting cell-search procedure has a lower level of complexity and thus can be accomplished much quicker than with prior procedures. In addition, the relative time difference estimates can be compared with corresponding time differences that are measured by a second mobile station. Based on this comparison, the propagation delays of signals between the second MS and various BSs can be calculated to determine the position of the second MS.

    摘要翻译： 公开了用于促进异步CDMA移动通信系统中的基站（BS）的定时（例如，已知的相对定时差）的方法和系统。 多个移动站（MS）测量各对BS之间的相对时间差，并且这些测量由BS存储。 源BS在邻居列表消息中向MS发送源BS与相邻小区列表上的每个BS之间的相对时间差的估计。 列表中的每个BS可以保持相对时间差估计表，其可以从从MS接收到的报告中连续地更新。 随后，BS可以在邻居列表消息中从该表发送条目到MS。 使用这种新技术，BS已知相对时间差。 因此，当MS发起对候选BS的小区搜索时，MS已经具有与其源BS相比该BS的定时的估计。 因此，所得到的细胞搜索程序具有较低的复杂度，因此可以比先前的程序更快地完成。 此外，相对时间差估计可以与由第二移动台测量的对应时间差进行比较。 基于该比较，可以计算第二MS与各个BS之间的信号的传播延迟，以确定第二MS的位置。

    Method and system for determining position of mobile radio terminals
    7.
    发明授权
    Method and system for determining position of mobile radio terminals 失效
    确定移动无线终端位置的方法和系统

    公开(公告)号：US06009334A

    公开(公告)日：1999-12-28

    申请号：US978960

    申请日：1997-11-26

    申请人： Hans Grubeck ,  Sven Fischer ,  Patrik Lundqvist

    发明人： Hans Grubeck ,  Sven Fischer ,  Patrik Lundqvist

    IPC分类号： H04B7/26 ,  G01S11/08 ,  H04W64/00 ,  H04M11/00 ,  G01S3/02

    CPC分类号： H04W64/00 ,  G01S11/08

    摘要： A method and apparatus are disclosed for determining more accurately, in a radio environment with time dispersion, the distance between a radio receiver and radio transmitter, by special processing of received radio signals that have been transmitted repeatedly from the same radio transmitter and are possibly subject to multipath propagation. The Time of Arrival (TOA) of the received radio signals is repeatedly estimated using channel power profiles. A TOA value near the minimum occurring TOA is selected wherein each estimated TOA is derived from incoherent integration of a randomly chosen number of the received bursts having the same known bit sequence, in order to eliminate the influence of noise.

    摘要翻译： 公开了一种方法和装置，用于通过专门处理已经从同一无线电发射机重复发射并且可能被接收的无线电信号的特殊处理，在具有时间分散的无线电环境中更准确地确定无线电接收机和无线电发射机之间的距离 多径传播。 使用信道功率分布重复地估计所接收的无线电信号的到达时间（TOA）。 选择在最小出现的TOA附近的TOA值，其中每个估计的TOA源自具有相同已知比特序列的随机选择数量的接收脉冲串的非相干积分，以消除噪声的影响。

    Method and system for determining position of mobile radio terminals
    8.
    发明授权
    Method and system for determining position of mobile radio terminals 失效
    确定移动无线终端位置的方法和系统

    公开(公告)号：US6064888A

    公开(公告)日：2000-05-16

    申请号：US978912

    申请日：1997-11-26

    申请人： Patrik Lundqvist ,  Hans Grubeck ,  Bengt Bergkvist ,  Sven Fischer

    发明人： Patrik Lundqvist ,  Hans Grubeck ,  Bengt Bergkvist ,  Sven Fischer

    IPC分类号： G01S5/06 ,  G01S5/14 ,  G01S19/03 ,  H04W64/00 ,  H04Q7/00 ,  H04Q7/24

    CPC分类号： H04W64/00 ,  G01S5/06 ,  G01S5/14

    摘要： A method and system are disclosed for determining the distance between a radio receiver (RX) and a radio transmitter (TX) by uplink time measurements, whereby uplink messages are transmitted by the transmitter (TX) and used primarily for position determination. In one embodiment, the uplink messages are intra-cell handover messages if the transmitter (TX) is a component of a mobile radio terminal which is operating in accordance with an existing TDMA standard. In a second embodiment, the uplink messages are a new type of message transmitted in time slots not used by the mobile radio terminal and preferably, also not used by other mobile radio terminals in the system, if the transmitter (TX) is a component of a mobile radio terminal which is operating in accordance with a new or emerging TDMA standard. The evolving GSM radio air-interface standard is an example of such a TDMA standard.

    摘要翻译： 公开了一种用于通过上行链路时间测量来确定无线电接收机（RX）和无线电发射机（TX）之间的距离的方法和系统，由此上行链路消息由发射机（TX）发送并主要用于位置确定。 在一个实施例中，如果发射机（TX）是根据现有TDMA标准操作的移动无线电终端的组件，则上行链路消息是小区内切换消息。 在第二实施例中，上行链路消息是在移动无线电终端未使用的时隙中发送的新类型的消息，并且优选地也不被系统中的其他移动无线终端使用，如果发射机（TX）是 根据新的或新兴的TDMA标准操作的移动无线电终端。 演进的GSM无线电空中接口标准是这种TDMA标准的一个例子。