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21. 发明专利

DE10140813A1 未知
公开(公告)号：DE10140813A1
公开(公告)日：2002-04-25
申请号：DE10140813
申请日：2001-08-20
申请人： ADVANTEST CORP TOKIO TOKYO
发明人： KITAYOSHI HITOSHI
IPC分类号： G01R29/08 , G01S3/14 , G01S3/58 , G01S7/40 , H04B17/00 , H04B17/391 , G01S5/02

22. 发明专利

GB0113064D0 System for monitoring CDMA-type mobile teminal and method of doing the same 未知
公开(公告)号：GB0113064D0
公开(公告)日：2001-07-18
申请号：GB0113064
申请日：2001-05-30
申请人： NEC CORP
IPC分类号： H04L9/32 , H04B7/26 , H04B17/391 , H04J13/00 , H04L12/26 , H04L12/28 , H04W12/06 , H04W12/08 , H04W24/00 , H04W24/06 , H04W76/02 , H04W88/18
摘要： A system for monitoring a CDMA-type mobile terminal device, includes (a) a CDMA base station system, (b) a CDMA core network connected to the CDMA base station system through wires, (c) a server which monitors the CDMA base station system connected to the CDMA core network through wires, (d) a monitoring device connected to the server through wires, the monitoring device monitoring and controlling the CDMA base station system through both the server and the CDMA core network, and (e) a CDMA-type mobile terminal device connected to the CDMA base station system through radio signals.

23. 发明专利

DE19929252A1 未知
公开(公告)号：DE19929252A1
公开(公告)日：2001-01-11
申请号：DE19929252
申请日：1999-06-25
申请人： SIEMENS AG
发明人： SOMMER VOLKER , BENZ MICHAEL , KOTTKAMP MAIK , FAERBER MICHAEL , KLEIN ANJA , ULRICH THOMAS
IPC分类号： H04B7/02 , H04B7/022 , H04B17/391 , H04L1/24 , H04B7/204 , H04B1/10 , H04B7/005 , H04B17/00 , H04L1/00 , H04L5/22 , H04Q7/34
摘要： In a radio telecommunication system, e.g. a UMTS or CDMA mobile radiotelephone system having a base station that is to be activated and additional base stations, midambels are sent for channel estimation on the reception side. Data on the parameters of the midambels that are to be transmitted by the additional base stations are evaluated in the base station to be activated. The parameter of a midambel to be transmitted is determined by evaluating the data and tuned in such a way that the midambel of an additional base station for a subscriber station can be received with negligible interference by the midambel of the base station to be activated.

24. 发明专利

DE19813564A1 未知
公开(公告)号：DE19813564A1
公开(公告)日：1999-09-30
申请号：DE19813564
申请日：1998-03-27
申请人： WANDEL & GOLTERMANN MANAGEMENT
发明人： WILLRETT URSEL
IPC分类号： H04B17/391 , H04W24/00 , H04Q7/34 , H04B7/005 , H04B17/00

25. 发明专利

DE69416404T2 未知
公开(公告)号：DE69416404T2
公开(公告)日：1999-06-10
申请号：DE69416404
申请日：1994-05-30
申请人： MARTIN COMMUNICATIONS PTY LTD
发明人： BEARD DAVID , MARTIN ANDREW
IPC分类号： G01R31/28 , H04B1/10 , H04B17/00 , H04B17/391 , H04L12/26
摘要： PCT No. PCT/AU94/00287 Sec. 371 Date Dec. 5, 1995 Sec. 102(e) Date Dec. 5, 1995 PCT Filed May 30, 1994 PCT Pub. No. WO94/29975 PCT Pub. Date Dec. 22, 1994A fading simulator for generating multipath-faded test signals which have attenuation notches of precisely controllable frequency position and attenuation depth from a modulated input signal of known bandwidth. The input signal is fed to a splitter that directs two in-phase components to a first path and a second path. The input to each path is divided by a splitter into in-phase and quadrature sub-signals having a quadrature phase relationship, each sub-signal being fed to a respective inverting attenuator, the outputs of the attenuators then being combined in a combiner and the combined output being passed through a variable delay line to generate the output of the respective path. The outputs of each path are then combined in a combiner circuit to generate the multipath-faded test signal. All four inverting attenuators are preferably substantially identical to one another so that the two paths have close to identical temperature-drift and other characteristics. The attenuators and delay lines are electronically controlled in tandem, preferably using a microprocessor and stored program, to generate precision, static or dynamic, attenuation notches desired.

26. 发明专利

CA2226539A1 HOTSPOT DETECTION IN A CELLULAR RADIO NETWORK 未知
公开(公告)号：CA2226539A1
公开(公告)日：1998-08-14
申请号：CA2226539
申请日：1998-02-13
申请人： ALSTHOM CGE ALCATEL
发明人： COLLMANN RALF
IPC分类号： H04B17/391 , H04M3/36 , H04W16/18 , H04Q7/34
摘要： For determining the spatial distribution of the traffic volume within a radio cell of a cellular mobile radio communications network, a test signal transmitter is usually installed at a test location. Each mobile station which receives the test signal, measures and reports the receives level to a computer for evaluating the test location. The test location is deemed to be suitably for the installation of a new base station if the majority of the mobile stations receives a test signal of sufficient strength. In order to provide a simple method for determining the spatial distribution, it is proposed to first subdivide the radio cell (RC1) into several segments (A1, A2, A3, ... , D4) and to associated respective reference values (e.g. reference receive levels) with these segments. The reference value are calculated with the help of a Radio Communications Network Planning Tool, wherein the distances from the segment (C2) to at least two of the base stations (BS1, BS2) can be derived from the reference values. Subsequently, measured values (e.g. the actual receive level) which depend on the length of the radio transmission paths, are determined for each mobile station (MS). After the reference values are compared with the actual values, the respective segment (C2) in which the mobile station (MS) is currently located, is marked. A counter setting indicating the traffic volume in this segment (C2) is then incremented for this segment (C2). A test signal transmitter is not required.

27. 发明专利

CA2164409A1 FADING SIMULATOR 未知
公开(公告)号：CA2164409A1
公开(公告)日：1994-12-22
申请号：CA2164409
申请日：1994-05-30
申请人： MARTIN COMMUNICATIONS PTY LTD
发明人： BEARD DAVID LEWIS , MARTIN ANDREW LOUIS
IPC分类号： G01R31/28 , H04B1/10 , H04B17/00 , H04B17/391
摘要： A fading simulator for generating multipath-faded test signals which have attenuation notches of precisely controllable frequency position and attenuation depth from a modulated input signal of known bandwith. The input signal is fed to a splitter (10) that directs two in-phase components to a first path (14) and a second path (18). The input to each path is divided by a splitter (22) into in-phase and quadrature sub-signals (24 and 26) having a quadrature phase relationship, each sub-signal being fed to a respective inverting attenuator (28 and 32), the outputs of the attenuators then being combined in a combiner (36) and the combined output being passed through a variable delay line (16) to generate the output of the respective path. The outputs of each path are then combined in a combiner circuit (12) to generate the multipath-faded faded test signal. All four inverting attenuators are preferably substantially identical to one another so that the two paths have close to identical temperature-drift and other characteristics. The attenuators and delay lines are electronically controlled in tandem, preferably using a microprocessor and stored program, to generate precision, static or dynamic, attenuation notches desired.

28. 发明专利

CA3141589A1 METHOD, SYSTEM, COMPUTER-READABLE MEDIUM COMPRISING SOFTWARE CODE FOR ESTIMATING PARAMTERS OF RAILWAY TRACK CIRCUITS, AND RELATED TRACK CIRCUIT 未知
公开(公告)号：CA3141589A1
公开(公告)日：2022-06-15
申请号：CA3141589
申请日：2021-12-09
申请人： ALSTOM TRANSP TECH
发明人： ROSS JOHN , FRIES JEFFREY
IPC分类号： H04B17/391 , B61K9/10 , B61L25/02 , H04B13/00 , H04L43/0817 , H04L43/0823
摘要： Estimating electrical parameters of a track circuit including a transmitter, a receiver, and a track section between the transmitter and receiver. The transmitter outputs, over the track section towards the receiver, a signal including a data packet part, and the signal received by the receiver is decoded to determine the data packet received. Simulated signals are generated, via a predetermined software model including parameters of the track circuit, by varying an actual value input for the model parameters, each signal generated corresponding to actual values input for the parameters. Each simulated signal is compared with the signal received at a receiver until finding a part of a simulated signal that matches a corresponding part of the signal received at a receiver. The actual parameter values corresponding to the simulated signal that match the signal received at the receiver are estimated as the actual parameters of the track circuit.

29. 发明专利

DE102020212301A1 Vorrichtung und Verfahren zur Bewertung eines Zustands eines Funkkanals 未知
公开(公告)号：DE102020212301A1
公开(公告)日：2022-03-31
申请号：DE102020212301
申请日：2020-09-29
申请人： BOSCH GMBH ROBERT
发明人： DIETRICH STEVEN , ZIMMER CHRISTOPH , KLESSIG HENRIK
IPC分类号： H04W24/04 , H04B17/373 , H04B17/391 , H04W16/22
摘要： Ein Verfahren umfasst: Ermitteln oder Bereitstellen (502) einer Zustandsinformation , welche einen simulierten Zustand einer räumlichen Anordnung von Komponenten einer Umgebung des Drahtloskommunikationsnetzwerks charakterisiert; Ermitteln (504) mindestens einer auf einem maschinentrainierten Modell basierenden Vorhersage, wobei die Zustandsinformation als Eingabeparameter in einem Eingabeabschnitt eines maschinentrainierten Modells bereitgestellt wird, wobei die Zustandsinformation durch das maschinentrainiertes Modell propagiert wird, und wobei in einem Ausgabeabschnitt des maschinentrainierten Modells die mindestens eine auf dem maschinentrainierten Modell basierende Vorhersage einer Kanalzustandsinformation, welche einen Zustand wenigstens eines Funkkanals zwischen zwei Kommunikationsmodulen charakterisiert, bereitgestellt wird.

30. 发明专利

RU2020121168A СПОСОБ И УСТРОЙСТВО ПОИСКА ТРАЕКТОРИИ РАСПРОСТРАНЕНИЯ 未知
公开(公告)号：RU2020121168A
公开(公告)日：2021-12-30
申请号：RU2020121168
申请日：2018-11-08
IPC分类号： H04B17/391 , H04W16/28 , H04W24/08

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