公开(公告)号：AU1319701A

公开(公告)日：2001-06-18

申请号：AU1319701

申请日：2000-10-24

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS

IPC: H04B1/7105 ,  H04B1/707

公开(公告)号：AU6332100A

公开(公告)日：2001-03-13

申请号：AU6332100

申请日：2000-07-31

Applicant: ERICSSON TELEFON AB L M

Inventor： FORSSEN ULF ,  KARLSSON JONAS

IPC: H01Q1/24 ,  H01Q3/24 ,  H01Q3/26 ,  H04B7/08 ,  H04B7/10 ,  H04W16/28 ,  H04Q7/36

Abstract: Recently, interference rejection combining techniques have been proposed which can significantly increase the performance of the uplink in C/I limited environments. However, as with many signal processing techniques, calculation complexity can be performance issue. Thus, according to exemplary embodiments of the present invention, the noise cross-correlation matrix used in interference rejection combining is reduced by applying beamforming and signal combining techniques. In this way, the benefits of interference rejection combining are obtained while reducing the processing complexity and freeing processor resources for other activities.

公开(公告)号：ZA9809420B

公开(公告)日：1999-05-04

申请号：ZA9809420

申请日：1998-10-15

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS ,  OVESJO FREDRIK

IPC: H04W64/00 ,  G01S ,  H04Q

CPC classification number: H04W64/00

公开(公告)号：CA2306699A1

公开(公告)日：1999-04-29

申请号：CA2306699

申请日：1998-10-09

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS ,  OVESJO FREDRIK

IPC: H04W64/00 ,  H04Q7/38 ,  G01S5/12 ,  H04Q7/22

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 (12) in communication with the mobile station (10), the mobile station (10) communicates with other, more remote base transceiver systems (12A, 12B, 12C, 12D) and trilateration and other distance measuring techniques are employed to calculate the position of the mobile station (10) in relation to those remote base transceiver systems. In another embodiment of the present invention, the local base transceiver system (12) is also used to calculate the position. In still another embodiment, during a cessation of transmissions by the mobile stations (10, 10A, 10B, 10C) in communication with a local base transceiver system (12), the local base transceiver system (12) is better able to use remote mobile stations (20A, 20B, 20C) for trilateration.

公开(公告)号：ES2611594T3

公开(公告)日：2017-05-09

申请号：ES08705299

申请日：2008-01-10

Applicant: ERICSSON TELEFON AB L M (PUBL)

Inventor： TYNDERFELDT TOBIAS ,  JOHANSSON MAGNUS ,  KARLSSON JONAS

IPC: H04B7/08 ,  H01Q3/24 ,  H04B7/06 ,  H04W74/08 ,  H04W88/06

Abstract: Un método (400) para uso en un primer nodo (110) en un sistema de comunicación de acceso inalámbrico, según cuyo método: · el primer nodo sirve para controlar (405) el tráfico hacia y desde los usuarios, UE (120), dentro de un cierto área en el sistema, una celda, y · el primer nodo está equipado (410) con una pluralidad de antenas de transmisión (111, 113), y, · el primer nodo puede emplear (415) una variedad de modos de transmisión de múltiples antenas para transmisiones de enlace descendente, i.e. transmisiones a los UE, y · el primer nodo puede llevar a cabo (420) un así llamado procedimiento de Acceso Aleatorio (Random Access, RA) con UE que no tienen un recurso de enlace ascendente dedicado, i.e. un recurso para el eNodeB, estando caracterizado el método por que -la variedad de modos de transmisión de múltiples antenas empleados comprende diversidad de transmisión y multiplexación espacial; y además por que (425) un mismo modo de transmisión de múltiples antenas de enlace descendente es utilizado por el primer nodo durante el procedimiento de RA, y ese mismo modo de transmisión de múltiples antenas de enlace descendente es uno sobre el que el UE posee información

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

IPC: G01S5/12 ,  H04W64/00

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.

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

IPC: G01S5/12 ,  G01S5/02 ,  H04W64/00 ,  H04Q7/38 ,  G01S5/14

公开(公告)号：AU742161B2

公开(公告)日：2001-12-20

申请号：AU8044098

申请日：1998-05-26

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS ,  LUNDSJO JOHAN ,  OVESJO FREDRIK

IPC: H04B7/08 ,  H04B7/10 ,  H04B7/26 ,  H04W16/00 ,  H04W16/24 ,  H04Q7/36

Abstract: The present invention relates to sectorization of a cellular CDMA-system. Each sectorized cell (CELL) in the CDMA-system comprises a number of antenna sectors (AS1-AS8) having overlapping regions. Each cell is allocated a number of at least two different pilot channels (P1, P2). Two antenna sectors having a common overlapping region are not allowed to use the same pilot channel. At least one of said pilot channels (P1, P2) are reused within the cell, by at least two antenna sectors with no common overlapping region. The antenna sectors that use the same pilot signal are constituting a logical sector (LS1, LS2). A mobile station can communicate with the base station in a cell by using one or more antenna sectors within one or more logical sectors. If a mobile station communicates with the base station within a number of antenna sectors within the same logical sector, no softer handoff is required between the antenna sectors.

公开(公告)号：AU6094001A

公开(公告)日：2001-12-11

申请号：AU6094001

申请日：2001-05-23

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS ,  ESMAILZADEH RIAZ

IPC: H04B1/7103 ,  H04B1/7107 ,  H04B1/00

公开(公告)号：SE9900684L

公开(公告)日：2000-08-27

申请号：SE9900684

申请日：1999-02-26

Applicant: ERICSSON TELEFON AB L M

Inventor： ESMAILZADEH RIAZ ,  KARLSSON JONAS

IPC: H04B1/707 ,  H04B1/10

Abstract: The invention is concerned with a radio receiver station, a multi-user interference cancellation unit and a multi-user cancellation method in a system with several transmitting radio stations. In the method, a radio signal is received as a sum of the signals from at least two of the transmitting radio stations in the system. Interference from at least two of the transmitting radio stations is cancelled. The interfering signals from at least some of the transmitting radio stations are processed in at least two separate operations in one or more stages, the result of each separate operation being taken into consideration in the estimation of the desired modulated signal sent to the receiver. Preferably, a part of the interfering signals is processed in one of the separate operations, while the rest of the interfering signals are processed in the other separate operations. If the cancellation is carried out in more than one step, the cancellation results of the first cancellation stage are used in the second interference cancellation stage, the method being correspondingly continued in the possible further cancellation stages.