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公开(公告)号：DE69833009T2
公开(公告)日：2006-08-24
申请号：DE69833009
申请日：1998-10-09
Applicant: ERICSSON TELEFON AB L M
Inventor： KARLSSON JONAS , OVESJOE FREDRIK
Abstract: A system and method for improving the accuracy of a location estimation measurement within a telecommunication system is disclosed. During a cessation of transmissions by a local base transceiver system in communication with the mobile station, the mobile station communicates with other, more remote base transceiver systems and trilateration and other distance measuring techniques are employed to calculate the position of the mobile station in relation to those remote base transceiver systems. In another embodiment of the present invention, the local base transceiver system is also used to calculate the position. In still another embodiment, during a cessation of transmissions by the mobile stations in communication with a local base transceiver system, the local base transceiver system is better able to use remote mobile stations for trilateration.
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公开(公告)号：AT269628T
公开(公告)日：2004-07-15
申请号：AT01942835
申请日：2001-01-19
Applicant: ERICSSON TELEFON AB L M
Inventor： KARLSSON JONAS , MACHI , OVESJOE FREDRIK
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公开(公告)号：SE9704282L
公开(公告)日：1999-05-22
申请号：SE9704282
申请日：1997-11-21
Applicant: ERICSSON TELEFON AB L M
Inventor： MAZUR SARA , HAGERMAN BO , FORSSEN ULF , ANDERSSON SOEREN , OVESJOE FREDRIK
Abstract: The present invention relates to radio systems and, more particularly, to a method and apparatus for receiving radio signals with the aid of beams generated by antenna assemblies. For each of the beams in a first of the antenna assemblies there is a beam in the second of the antenna assemblies that covers the same space area. Signals received by the second are delayed relative to signals received by the first of the antenna assemblies. Then signals from the first antenna assembly are combined with signals from the second of the antenna assemblies. The combined signals derive from beams covering the same space area. Each combined signal is then radio received in a joint radio receiver. A DOA-estimation can be calculated on the basis of radio received signals derived from all beams.
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公开(公告)号：MX2013002516A
公开(公告)日：2013-04-24
申请号：MX2013002516
申请日：2011-02-03
Applicant: ERICSSON TELEFON AB L M
Inventor： HAGERMAN BO , OVESJOE FREDRIK , REIAL ANDRES , ASPLUND HENRIK
Abstract: Controlar el estado de polarización de las señales que serán transmitidas desde un nodo de estación de base de radio MIMO capaz a una pluralidad de equipos de usuario, la estación de base de radio nodo comprendiendo una unidad de precodificador que se conecta a un primero y un segundo puerto de antena virtual a un primero y segundo puerto de transmisión de antena respectivo, mediante los pasos de controlar (S10) una fase relativa entre señales transmitidas desde el primero y segundo puerto de transmisión de antena para proporcionar un par predeterminado de estados de polarización ortogonales para señales transmitidas en los primero y segundo puertos de antena virtuales, e intercambiar (S20) los estados de polarización de los primero y segundo puertos de antena virtuales, para proporcionar transmisión de señales polarizadas con estados de polarización alternaos.
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公开(公告)号：DE69936593T2
公开(公告)日：2008-04-10
申请号：DE69936593
申请日：1999-10-29
Applicant: ERICSSON TELEFON AB L M
Inventor： DAHLMAN ERIK , OVESJOE FREDRIK
Abstract: The downlink channelization code limitation problem encountered in spread spectrum or CDMA cellular systems is resolved by using codes from a different, non-orthogonal code set when operating in the slotted mode. The non-orthogonal code sets can be constructed by using the same channelization code tree, but applying a different scrambling code.
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Patent Agency Ranking
公开(公告)号：DE60103848T2
公开(公告)日：2005-07-14
申请号：DE60103848
申请日：2001-01-19
Applicant: ERICSSON TELEFON AB L M
Inventor： KARLSSON JONAS , OVESJOE FREDRIK
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公开(公告)号：ZA200103331B
公开(公告)日：2001-11-12
申请号：ZA200103331
申请日：2001-04-24
Applicant: ERICSSON TELEFON AB L M
Inventor： DAHLMAN ERIK , OVESJOE FREDRIK
Abstract: The downlink channelization code limitation problem encountered in spread spectrum or CDMA cellular systems is resolved by using codes from a different, non-orthogonal code set when operating in the slotted mode. The non-orthogonal code sets can be constructed by using the same channelization code tree, but applying a different scrambling code.
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公开(公告)号：SE513656C2
公开(公告)日：2000-10-16
申请号：SE9704282
申请日：1997-11-21
Applicant: ERICSSON TELEFON AB L M
Inventor： MAZUR SARA , HAGERMAN BO , FORSSEN ULF , ANDERSSON SOEREN , OVESJOE FREDRIK
Abstract: The present invention relates to radio systems and, more particularly, to a method and apparatus for receiving radio signals with the aid of beams generated by antenna assemblies. For each of the beams in a first of the antenna assemblies there is a beam in the second of the antenna assemblies that covers the same space area. Signals received by the second are delayed relative to signals received by the first of the antenna assemblies. Then signals from the first antenna assembly are combined with signals from the second of the antenna assemblies. The combined signals derive from beams covering the same space area. Each combined signal is then radio received in a joint radio receiver. A DOA-estimation can be calculated on the basis of radio received signals derived from all beams.
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公开(公告)号：CA2295813A1
公开(公告)日：1999-01-21
申请号：CA2295813
申请日：1998-07-03
Applicant: ERICSSON TELEFON AB L M
Inventor： DAHLMAN ERIK , OVESJOE FREDRIK
Abstract: Variable spreading factors and multi-code transmissions are flexibly accomodated by assigning spreading codes in accordance with the described techniques. Spreading codes are assigned so that the control channel is orthogonal to all physical channels in the composite spread spectrum signal. Power balance between in-phase (I)and quadrature (Q) branches in the transmitter is also provided by assigning physical channels to appropriate branches and splitting physical channels, where necessary.
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公开(公告)号：SE9704282D0
公开(公告)日：1997-11-21
申请号：SE9704282
申请日：1997-11-21
Applicant: ERICSSON TELEFON AB L M
Inventor： MAZUR SARA , HAGERMAN BO , FORSSEN ULF , ANDERSSON SOEREN , OVESJOE FREDRIK
Abstract: The present invention relates to radio systems and, more particularly, to a method and apparatus for receiving radio signals with the aid of beams generated by antenna assemblies. For each of the beams in a first of the antenna assemblies there is a beam in the second of the antenna assemblies that covers the same space area. Signals received by the second are delayed relative to signals received by the first of the antenna assemblies. Then signals from the first antenna assembly are combined with signals from the second of the antenna assemblies. The combined signals derive from beams covering the same space area. Each combined signal is then radio received in a joint radio receiver. A DOA-estimation can be calculated on the basis of radio received signals derived from all beams.
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