公开(公告)号：SE9702597D0

公开(公告)日：1997-07-04

申请号：SE9702597

申请日：1997-07-04

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS ,  REVSBECH DAM HENRIK

IPC: H04B7/26 ,  H04W64/00 ,  H04B

Abstract: A radio communications system includes a radio base station provided with an array antenna. The antenna lobes of the array antenna can be directed onto a terminal with the aid of a generated directional estimate. The directional estimate is based on a signal received from the terminal. A method registers a generated directional estimate together with a terminal recognition character. The directional estimate is read when the radio connection with the terminal changes channel. The antenna lobe is directed on the basis of the direction estimate, immediately communication commences over the new channel. A radio base station is equipped with a database in which the terminal recognition character and the direction estimate are registered.

公开(公告)号：DE69835820D1

公开(公告)日：2006-10-19

申请号：DE69835820

申请日：1998-06-05

Applicant: ERICSSON TELEFON AB L M

Inventor： DAM HENRIK ,  KARLSSON JONAS

IPC: H04B7/26 ,  H04W64/00

Abstract: A radio communications system includes a radio base station provided with an array antenna. The antenna lobes of the array antenna can be directed onto a terminal with the aid of a generated directional estimate. The directional estimate is based on a signal received from the terminal. A method registers a generated directional estimate together with a terminal recognition character. The directional estimate is read when the radio connection with the terminal changes channel. The antenna lobe is directed on the basis of the direction estimate, immediately communication commences over the new channel. A radio base station is equipped with a database in which the terminal recognition character and the direction estimate are registered.

公开(公告)号：AU2003208141B2

公开(公告)日：2006-06-01

申请号：AU2003208141

申请日：2003-07-04

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS ,  OVESJO FREDRIK

IPC: H04Q7/38 ,  G01S5/12 ,  H04Q7/22

公开(公告)号：DE69926363T2

公开(公告)日：2006-04-20

申请号：DE69926363

申请日：1999-05-07

Applicant: ERICSSON TELEFON AB L M

Inventor： OVESJOE FREDERIK BENGT ,  KARLSSON JONAS ,  MAZUR SARA ,  KRONESTEDT FREDRIC

IPC: H04J13/18 ,  H04J13/00 ,  H04W16/00 ,  H04W16/24

Abstract: Multiple code sets are introduced in the downlink of a CDMA system to allow for more connections in each cell. The codes are then allocated to different users taking into account the interference therebetween. The interference depends on the antenna gains, transmission powers used and cross-correlations between codes. By estimating these parameters the interference can be minimized in the code allocation process. Since the allocation of codes and code sets to geographical areas within a cell may change over time, code handoff is supported.

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

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

公开(公告)号：MY119652A

公开(公告)日：2005-06-30

申请号：MYPI9804727

申请日：1998-10-16

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS ,  OVESJO FREDRIK

IPC: H04W64/00

Abstract: A SYSTEM AND METHOD FOR IMPROVING THE ACCURACY OF A LOCATION ESTIMATION MEASUREMENT WITHIN A TELECOMMUNICATIONS 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 TRAMSMISSIONS BY THE MOBILE STATIONS IN COMMUNICATION WITH A LOCAL BASE TRANSCEIVER SYSTEM, THE LOCAL BASE TRANSCEIVER SYSTEM IS BATTER ABLE TO USE REMOTE MOBILE STATIONS FOR TRILATERATION. (FIG. 2).

公开(公告)号：AU1654302A

公开(公告)日：2002-07-01

申请号：AU1654302

申请日：2001-12-14

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS ,  SHIMA TETSUFUMI ,  HAN JEONGHOON

IPC: H04J13/00 ,  H04B1/10 ,  H04B1/7107 ,  H04B1/707

Abstract: The invention has the object of determining the optimum weighting coefficient for each channel in a subtractive interference canceller (IC). A weighting coefficient determining method in a subtractive interference canceller for handling digital radio communications, characterized in that complex weighting coefficients are set so as to minimize the power of an interference cancellation residual signal for each channel in each stage.

公开(公告)号：AU2899601A

公开(公告)日：2001-07-31

申请号：AU2899601

申请日：2001-01-19

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS ,  OVESJO FREDRIK

IPC: G01S5/12 ,  G01S5/02 ,  H04W64/00

公开(公告)号：GB2331682B

公开(公告)日：2001-01-17

申请号：GB9903530

申请日：1997-08-08

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS ,  TEDER PAUL ,  EWERBRING LARS-MAGNUS

IPC: H04B1/707 ,  H04J13/04

Abstract: A receiver device (703) downspreads signals from a band spreading signal, which generates downspread symbol sequences (803). A vector generator (704) generate symbol vectors (805) which include a symbol from each downspread symbol sequence (803). An auxiliary receiver (705) detects symbol vectors (805) in a first window (809) with the length of one symbol time. The auxiliary receiver (705) generates provisional estimates of the symbol vectors (805) with the help of a device with a first window algorithm (811). A delaying module (706) delays the symbol vectors (805) from the vector generator (704) by one symbol time before they reach a main receiver (707). The main receiver (707) detects in a second window (806) the symbol vectors (805) with the length of one symbol time. The main receiver (707) uses a device with a second window algorithm (808) in order to estimate the received symbol vectors (805) with reference taken to the previously estimated symbol vectors in the main receiver (705) and the provisional estimates of the symbol vectors (805) from the auxiliary receiver (705). A component generator (710) divides up the estimated symbol vectors (807) from the main receiver into separate components (815).

公开(公告)号：SE509776C2

公开(公告)日：1999-03-08

申请号：SE9702597

申请日：1997-07-04

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS ,  REVSBECH DAM HENRIK

IPC: H04B7/26 ,  H04W64/00 ,  H04B7/10

Abstract: A radio communications system includes a radio base station provided with an array antenna. The antenna lobes of the array antenna can be directed onto a terminal with the aid of a generated directional estimate. The directional estimate is based on a signal received from the terminal. A method registers a generated directional estimate together with a terminal recognition character. The directional estimate is read when the radio connection with the terminal changes channel. The antenna lobe is directed on the basis of the direction estimate, immediately communication commences over the new channel. A radio base station is equipped with a database in which the terminal recognition character and the direction estimate are registered.