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公开(公告)号：BRPI9810855B1
公开(公告)日：2015-12-08
申请号：BR9810855
申请日：1998-07-14
Applicant: MOTOROLA INC , MOTOROLA MOBILITY INC , MOTOROLA SOLUTIONS INC
Inventor： KOTZIN MICHAEL D , ROZANSKI WALTER J
Abstract: método e aparelho para transmissão de sinais em um sistema de comunicação diferentes códigos ortogonais (w~ x~, w~ y~) são usados para distribuir canais pilotos comuns (piloto~ a~) destinados para transmissão para uma estação móvel particular (106) dentro de uma área de cobertura (setor a) para implantar uma diversidade de transmissão de elos avançados. pela implantação de códigos ortogonais diferentes, separados (w~ x~, w~ y~) para cada canal piloto (piloto~ a~), os sinais pilotos transmitidos via antenas (218, 222) para uma área de cobertura comum (setor a) são ortogonais um ao outro e assim não degradam o desempenho do sistema. adicionalmente, o uso de diferentes códigos ortogonais (w~ x~, w~ y~) para cada canal piloto (piloto~ a~) permite que a estação móvel (106) discirna que canal piloto distribuído com um código ortogonal diferente inclui informações de canais de tráfego correspondentes (tch). isto permite que a diversidade de transmissão de elos avançados seja ativada/desativada com base nas condições associadas com o ambiente, o canal de comunicações, etc., sem uma perda completa das informações conforme visualizadas pela estação móvel (106).
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公开(公告)号：DE19781930T1
公开(公告)日：1999-12-23
申请号：DE19781930
申请日：1997-08-27
Applicant: MOTOROLA INC
Inventor： BUFORD KEVIN A , REED JOHN D , ROZANSKI WALTER J , GHOSH AMITAVA
Abstract: A method for determining a subscriber unit location in a communication system is provided. The method includes the steps of receiving a signal from the subscriber unit at a first base station, determining a first receive time of the signal based on a sequence of spreading symbols at the first base station, determining a first angle of arrival of the signal at the first base station, and determining the location of the subscriber unit from the first receive time, the first angle of arrival, and further predetermined information about the first base station. The signal is formed via modulation by the sequence of spreading symbols.
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公开(公告)号：SE525280C2
公开(公告)日：2005-01-25
申请号：SE9900750
申请日：1999-03-03
Applicant: MOTOROLA INC
Inventor： BUFORD KEVIN A , REEDD JOHN D , ROZANSKI WALTER J , GHOSH AMITAVA
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公开(公告)号：FI990379A0
公开(公告)日：1999-02-22
申请号：FI990379
申请日：1999-02-22
Applicant: MOTOROLA INC
Inventor： BUFORD KEVIN A , REED JOHN D , ROZANSKI WALTER J , GHOSH AMITAVA
Abstract: A method for determining a subscriber unit location in a communication system is provided. The method includes the steps of receiving a signal from the subscriber unit at a first base station, determining a first receive time of the signal based on a sequence of spreading symbols at the first base station, determining a first angle of arrival of the signal at the first base station, and determining the location of the subscriber unit from the first receive time, the first angle of arrival, and further predetermined information about the first base station. The signal is formed via modulation by the sequence of spreading symbols.
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公开(公告)号：SE9900750L
公开(公告)日：1999-03-03
申请号：SE9900750
申请日：1999-03-03
Applicant: MOTOROLA INC
Inventor： BUFORD KEVIN A , REEDD JOHN D , ROZANSKI WALTER J , GHOSH AMITAVA
Abstract: A method for determining a subscriber unit location in a communication system is provided. The method includes the steps of receiving a signal from the subscriber unit at a first base station, determining a first receive time of the signal based on a sequence of spreading symbols at the first base station, determining a first angle of arrival of the signal at the first base station, and determining the location of the subscriber unit from the first receive time, the first angle of arrival, and further predetermined information about the first base station. The signal is formed via modulation by the sequence of spreading symbols.
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Patent Agency Ranking
公开(公告)号：FI990379A
公开(公告)日：1999-02-22
申请号：FI990379
申请日：1999-02-22
Applicant: MOTOROLA INC
Inventor： BUFORD KEVIN A , REED JOHN D , ROZANSKI WALTER J , GHOSH AMITAVA
Abstract: A method for determining a subscriber unit location in a communication system is provided. The method includes the steps of receiving a signal from the subscriber unit at a first base station, determining a first receive time of the signal based on a sequence of spreading symbols at the first base station, determining a first angle of arrival of the signal at the first base station, and determining the location of the subscriber unit from the first receive time, the first angle of arrival, and further predetermined information about the first base station. The signal is formed via modulation by the sequence of spreading symbols.
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公开(公告)号：ID17706A
公开(公告)日：1998-01-22
申请号：ID973069
申请日：1997-09-03
Applicant: MOTOROLA INC
Inventor： BUFORD KEVIN A , REED JOHN D , ROZANSKI WALTER J , GOSH AMITAVA
Abstract: A method for determining a subscriber unit location in a communication system is provided. The method includes the steps of receiving a signal from the subscriber unit at a first base station, determining a first receive time of the signal based on a sequence of spreading symbols at the first base station, determining a first angle of arrival of the signal at the first base station, and determining the location of the subscriber unit from the first receive time, the first angle of arrival, and further predetermined information about the first base station. The signal is formed via modulation by the sequence of spreading symbols.
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公开(公告)号：DE69841221D1
公开(公告)日：2009-11-19
申请号：DE69841221
申请日：1998-07-17
Applicant: MOTOROLA INC
Inventor： KOTZIN MICHAEL D , ROHANI KAMYAR , ROZANSKI WALTER J
Abstract: Orthogonal transmit diversity is implemented by employing a data splitter (803) to subdivide channel information (801) into at least a first portion of bits (802) and a second portion of bits (804). Each portion is spread with its own Walsh code for eventual transmission to a mobile station via a predetermined carrier frequency. When the number of bits in the first and second portion (802, 804) are small, separate Walsh codes are used to maintain orthogonality. When the number of bits in the first and second portion (802, 804) are relatively large, a time-division multiplex transmission is used to maintain orthogonality. A controller (809) controls the subdivision of the channel information and also an interleaver (308) to further enhance the effects of the diversity transmission. Control information related to the subdivision is transmitted to the mobile station so the channel information can be accurately reconstructed prior to decoding.
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公开(公告)号：FI109241B
公开(公告)日：2002-06-14
申请号：FI990379
申请日：1999-02-22
Applicant: MOTOROLA INC
Inventor： BUFORD KEVIN A , REED JOHN D , ROZANSKI WALTER J , GHOSH AMITAVA
Abstract: A method for determining a subscriber unit location in a communication system is provided. The method includes the steps of receiving a signal from the subscriber unit at a first base station, determining a first receive time of the signal based on a sequence of spreading symbols at the first base station, determining a first angle of arrival of the signal at the first base station, and determining the location of the subscriber unit from the first receive time, the first angle of arrival, and further predetermined information about the first base station. The signal is formed via modulation by the sequence of spreading symbols.
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公开(公告)号：BR9810855A
公开(公告)日：2000-07-25
申请号：BR9810855
申请日：1998-07-14
Applicant: MOTOROLA INC
Inventor： KOTZIN MICHAEL D , ROZANSKI WALTER J
Abstract: Different orthogonal codes (Wx, Wy) are used to spread common pilot channels (PilotA) intended for transmission to a particular mobile station (106) within a coverage area (sector A) to implement forward link transmit diversity. By implementing separate, different orthogonal codes (Wx, Wy) for each pilot channel (PilotA), the pilot signals transmitted via antennas (218, 222) to a common coverage area (sector A) are orthogonal to one another and thus do not degrade system performance. Additionally, the use of different orthogonal codes (Wx, Wy) for each pilot channel (PilotA) allows the mobile station (106) to discern which pilot channel spread with a different orthogonal code includes corresponding traffic channel (TCH) information. This allows forward link transmit diversity to be enable/disabled based on conditions associated with the environment, the communications channel, etc. without a complete loss of information as seen by the mobile station (106).
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