专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明专利

CA2405855A1 TIME OF ARRIVAL ESTIMATION FOR EDGE/GSM 未知
公开(公告)号：CA2405855A1
公开(公告)日：2001-11-08
申请号：CA2405855
申请日：2001-04-26
申请人： ERICSSON TELEFON AB L M
发明人： FISCHER SVEN , KANGAS ARI
IPC分类号： H04L27/00 , H04W24/00 , H04Q7/38
摘要： In systems which transmit both GSM modulated and EDGE modulated signals, tim e of arrival estimations can be improved without requiring the detection of th e type of modulation used on the received signal. In accordance with the prese nt invention, a received signal is initially demodulated by a receiver in accordance with a first demodulation scheme. The demodulated signal is split into two copies. Taking into account the initial demodulation, one of the copies is demodulated in accordance with another demodulation scheme, thereb y resulting in a first signal demodulated in accordance with the first demodulation scheme and a second signal demodulated in accordance with a second demodulation scheme. A training sequence is used to correlate the two signals which are then summed in an incoherent integration process. The resu lt of the incoherent integration is used to estimate the time of arrival of the received signal.

82. 发明专利

BR9912447A 未知
公开(公告)号：BR9912447A
公开(公告)日：2001-04-17
申请号：BR9912447
申请日：1999-07-23
申请人： ERICSSON TELEFON AB L M
发明人： LARSSON ERIK , KANGAS ARI , FISCHER SVEN , LUNDQVIST PATRIK
IPC分类号： G01S5/06 , H04W64/00 , H04Q7/38

83. 发明专利

AU6191300A Selection of location measurement units for determining the position of a mobilecommunication station 未知
公开(公告)号：AU6191300A
公开(公告)日：2001-01-30
申请号：AU6191300
申请日：2000-06-21
申请人： ERICSSON TELEFON AB L M
发明人： FISCHER SVEN , KANGAS ARI , LARSSON ERIK
IPC分类号： G01S1/04 , G01S5/14 , G01S19/09 , G01S19/46 , H04W64/00 , H04Q7/38
摘要： In selecting (110) location measurement units (13) for measuring an uplink signal received from a mobile communication station (17) operating in a wireless communication network in order to locate the position of the mobile communication station (17) in the wireless communication network, a possible position (111) of the mobile station in the network is identified. The location measurement units (13) to be used in measuring the uplink signal can then be identified by evaluating one or more of relative positional relationships between the possible position (111) of the mobile station (17) and a plurality of further positions (62) respectively associated with a plurality of location measurement units (13) in the network; path loss measures predicted (101) for each of a plurality of location measurement units (13) relative to the possible position (111) of the mobile station (17); and geometric dilution of precision (GDOP) values determined (125) for each of a plurality of groups (112) of location measurement units (13) with respect to the possible position (111) of the mobile station (17).

84. 发明专利

CA2374815A1 METHODS AND ARRANGEMENTS FOR LOCATING A MOBILE TELECOMMUNICATIONS STATION 未知
公开(公告)号：CA2374815A1
公开(公告)日：2000-12-21
申请号：CA2374815
申请日：2000-04-28
申请人： ERICSSON TELEFON AB L M
发明人： FISCHER SVEN , KANGAS ARI , LARSSON ERIK , LUNDQVIST PATRIK
IPC分类号： H04W64/00 , H04Q7/38
摘要： In a mobile telecommunications network, a mobile station (MS) (12) is configured to generate and uplink transmit position measuring data (54, 70) prior to and/or during a call connection, without noticeably interrupting th e user or degrading the quality of service provided. Position measuring data (54, 70) can be uplink transmitted over an idle traffic channel during a cal l set up operation for a brief moment while the call connection is being completed. Position measuring data (54, 70) can also be uplink transmitted during a call by selectively stealing data positions or burst positions in t he uplink signal. The position measuring data (54, 70) is received by a plurali ty of base stations (14) and uplink signal characteristics are measured and collected. The measured uplink signal characteristic data from several base stations (14) is then used to determine a current approximate geographical location of the mobile station (12).

85. 发明专利

AU5661799A Improvements in downlink observed time difference measurements 未知
公开(公告)号：AU5661799A
公开(公告)日：2000-02-28
申请号：AU5661799
申请日：1999-07-27
申请人： ERICSSON TELEFON AB L M
发明人： KANGAS ARI , LARSSON ERIK , LUNDQVIST PATRIK , CEDERVALL MATS , FISCHER SVEN
IPC分类号： G04F10/00 , G01S1/02 , G01S5/10 , H04B7/26 , H04W24/04 , H04W64/00 , H04Q7/38

86. 发明专利

CA2338544A1 IMPROVEMENTS IN DOWNLINK OBSERVED TIME DIFFERENCE MEASUREMENTS 未知
公开(公告)号：CA2338544A1
公开(公告)日：2000-02-17
申请号：CA2338544
申请日：1999-07-27
申请人： ERICSSON TELEFON AB L M
发明人： KANGAS ARI , FISCHER SVEN , CEDERVALL MATS , LUNDQVIST PATRIK , LARSSON ERIK
IPC分类号： G04F10/00 , G01S1/02 , G01S5/10 , H04B7/26 , H04W24/04 , H04W64/00 , H04Q7/38
摘要： A mobile communication station in (MS1) a wireless communication network is used to measure the respective times of arrival of radio signals respectivel y transmitted by a plurality of radio transmitters (23, 28) in the network. Th e mobile communication station is provided with real time difference informati on indicative (RTDs) of differences between a time base (60) used by a radio transmitter (23) serving the mobile communication station and respective tim e 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 transmittter 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. Fo r 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 th e radio signal is expected to arrive.

87. 发明专利

CA2338395A1 IMPROVEMENTS IN MAKING TIME OF ARRIVAL MEASUREMENTS 未知
公开(公告)号：CA2338395A1
公开(公告)日：2000-02-10
申请号：CA2338395
申请日：1999-07-23
申请人： ERICSSON TELEFON AB L M
发明人： FISCHER SVEN , KANGAS ARI , LUNDQVIST PATRIK , LARSSON ERIK
IPC分类号： G01S5/06 , H04W64/00 , H04Q7/36 , H04Q7/38 , H04Q7/34
摘要： A time of arrival measurement apparatus is (TMU) used to measure the time of arrival of a radio signal (30) transmitted by a mobile communication station (MS) operating in a wireless mobile communication network. The apparatus is provided with information indicative (36) of a predetermined point in time a t 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 (BSIC, HRN) from which it can determine an informational content of the radio signal.

88. 发明专利

IN5002DEN2012A "DEFINING ADAPTIVE DETECTION THRESHOLDS" 未知
公开(公告)号：IN5002DEN2012A
公开(公告)日：2015-10-02
申请号：IN5002DEN2012
申请日：2012-06-06
申请人： ERICSSON TELEFON AB L M
发明人： KANGAS ARI , SIOMINA IANA
IPC分类号： G01S5/02
摘要： A wireless device (24) receives a reference signal over a radio channel (21). The reference signal may be Positioning Reference Signals (PRS) and/or Common Referencing Signals (CR5), and may be transmitted from a transmitter (22). The wireless device (24) comprises a correlator (100); a reference signal detector (102); a threshold selector (106); and a reference signal analyzer (108). The correlator (100) use a signal received from the radio channel (21) and a replica of the reference signal to provide a correlator output value. The reference signal detector (102) compares the correlator output value with a threshold value to detect presence of a reference signal, and to estimate an arrival time of the reference signal. The threshold selector (106) adapts the threshold value to at least an estimate of a relative amount of noise and interference power in the received signal.

89. 发明专利

SG181795A1 METHOD AND APPARATUS FOR POSITION DETERMINATION IN A CELLULAR COMMUNICATIONS SYSTEM 未知
公开(公告)号：SG181795A1
公开(公告)日：2012-07-30
申请号：SG2012045027
申请日：2010-11-29
申请人： ERICSSON TELEFON AB L M
发明人： WIGREN TORBJOERN , KANGAS ARI
摘要： A scaling apparatus and method scales uncertainty criteria (horizontal and vertical accuracy requirements) originally received from an end user before the uncertainty criteria is sent on to a wireless terminal (30) as requirements on the accuracy of location positioning performed by/for the wireless terminal. In an example embodiment the amount/degree of scaling is selected according to a configured best estimate of the confidence and uncertainty relation, and such best estimate can be based on the majority of the terminals of the network. For a WCDMA radio access network (RAN) case the scaling can be performed in a radio network controller (RNC). For a Long Term Evolution (LTE) radio access network (RAN) case the scaling can be performed in the evolved Serving Mobile Location Center (eSMLC) node (26). In another case the scaling can alternatively be performed in the wireless terminal itself.

90. 发明专利

ES2383965T3 Método y adaptaciones en una red de telecomunicación móvil 未知
公开(公告)号：ES2383965T3
公开(公告)日：2012-06-27
申请号：ES06778115
申请日：2006-08-02
申请人： ERICSSON TELEFON AB L M
发明人： KANGAS ARI
IPC分类号： G01S5/06 , G01S5/02
摘要： Una adaptación en una red de telecomunicación móvil para la detección de una senal transmitida del Equipo de Usuario, UE, que comprende los medios para detectar la senal durante un tiempo ttot, en la que dichos medios comprenden un correlador adaptado para la correlación coherente y no coherente combinada, en el que la longitud del intervalo de correlación coherente es L muestras de senal, el numero de intervalos de correlación coherentes es M y la correlación coherente provoca un resultado de correlación coherente para cada uno de los intervalos de detección coherente M, y los medios para anadir los resultados de correlación coherente no coherentemente, caracterizado porque comprende los medios para seleccionar uno de la longitud L del intervalo de detección coherente y el intervalo de detección total ttot en base a al menos uno de los parametros del tamano de la celda, la velocidad y aceleración del UE, el numero de las Unidades de Mediciones de Localización, LMU, que participan, y una tasa de alarmas falsas total deseada.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式