公开(公告)号：CA2722069A1

公开(公告)日：2009-11-19

申请号：CA2722069

申请日：2009-05-05

Applicant: QUALCOMM INC

Inventor： CHIN TOM ,  NAGUIB AYMAN FAWZY ,  SHI GUANGMING CARL ,  BREHLER MATTHIAS ,  GLAZKO SERGUEI A

IPC: H04W48/16

Abstract: Certain embodiments of the present disclosure provide a method for scanning for paging messages in a second radio access technology (RAT) network, such as a CDMA network, while connected to a first RAT network, such as a WiMAX network. For certain embodiments, an enhanced scanning request message may facilitate establishing a scanning cycle in the first RAT that aligns with a paging cycle of the second RAT.

公开(公告)号：BRPI0509584A

公开(公告)日：2007-10-09

申请号：BRPI0509584

申请日：2005-03-29

Applicant: QUALCOMM INC

Inventor： BREHLER MATTHIAS ,  NEUFELD ARTHUR J ,  LIU JING ,  MAY JOHN CHARLES ,  OTTE KURT W

IPC: H04B1/16 ,  H04M1/73 ,  H04W52/02

Abstract: A method for correcting operation of the sleep oscillator ( 116 ) of a wireless communications device ( 100 ). Sleep oscillator frequency is estimated ( 412 ) so as to compensate for estimated temperature induced errors. In estimating temperature induced errors, errors ( 504 ) in sleep oscillator frequency are treated as being temperature induced errors ( 522 ), but probable multipath errors are bounded ( 410, 520 ) to predetermined sleep clock error maxima ( 602 ) corresponding to sleep duration over which the error occurred.

公开(公告)号：CA2724885A1

公开(公告)日：2009-12-17

申请号：CA2724885

申请日：2009-06-09

Applicant: QUALCOMM INC

Inventor： BREHLER MATTHIAS ,  BANISTER BRIAN C ,  GAAL PETER

IPC: H04L27/26

Abstract: Systems and methodologies are described that facilitate signal separation across different carriers within a wireless communications environment. The systems and methods can identify a carrier spacing that can be based upon a tone spacing associated with two or more carriers. Such carrier spacing can be employed within a network in order to mitigate signal separation with multiple carriers. The subject innovation can further evaluate a carrier raster associated with a network in order to identify a carrier spacing to ensure orthogonality between tones from different carriers.

公开(公告)号：AU2005229818B2

公开(公告)日：2009-05-28

申请号：AU2005229818

申请日：2005-03-29

Applicant: QUALCOMM INC

Inventor： NEUFELD ARTHUR J ,  BREHLER MATTHIAS ,  LIU JING ,  OTTE KURT W ,  MAY JOHN CHARLES

IPC: H04B1/16 ,  H04M1/73 ,  H04W52/02

Abstract: A method for correcting operation of the sleep oscillator ( 116 ) of a wireless communications device ( 100 ). Sleep oscillator frequency is estimated ( 412 ) so as to compensate for estimated temperature induced errors. In estimating temperature induced errors, errors ( 504 ) in sleep oscillator frequency are treated as being temperature induced errors ( 522 ), but probable multipath errors are bounded ( 410, 520 ) to predetermined sleep clock error maxima ( 602 ) corresponding to sleep duration over which the error occurred.

公开(公告)号：BRPI0509569A

公开(公告)日：2007-09-25

申请号：BRPI0509569

申请日：2005-04-04

Applicant: QUALCOMM INC

Inventor： LIU JING ,  TUYSSERKANI BIJAN ,  ANDERSON JON JAMES ,  OTTE KURT ,  BREHLER MATTHIAS

IPC: H04B7/02

Abstract: Methods and apparatus for searching a list of pilot signals. A method is provided for searching a list of pilot signals in a communication network. The method includes defining a prio list that indicates an order in which the list of pilot signals will be searched, obtaining a search duration, and determining an indicator that identifies a portion of the prio list that can be searched within the search duration. The method also includes performing a search of the portion of the prio list, and updating the list of pilot signals based on the results of the search.

公开(公告)号：BRPI0808484A2

公开(公告)日：2014-07-08

申请号：BRPI0808484

申请日：2008-03-04

Applicant: QUALCOMM INC

Inventor： BREHLER MATTHIAS

IPC: H04L25/02 ,  H03G3/20 ,  H04L27/26

Abstract: Apparatus and methods are provided for accounting for the effects of automatic gain control (AGC) in a multi carrier communications system when combining pilot tone interlaces by essentially reversing the effects of the AGC. In an aspect, a method for adjusting for the effects of automatic gain control when combining pilot interlaces in an interlace filter of a communication system is disclosed. The method includes determining a normalization gain of an applied automatic gain control normalized to a predefined time (604). Additionally, two or more combining coefficients for an interlace filter are determined based on a selected criterion (606). Each of the two or more combining coefficients is then modified based on the determined normalization gain (608) to yield adjusted combining coefficients. Corresponding apparatus are also disclosed.

公开(公告)号：AT539530T

公开(公告)日：2012-01-15

申请号：AT08731357

申请日：2008-03-04

Applicant: QUALCOMM INC

Inventor： BREHLER MATTHIAS

IPC: H04L25/02 ,  H03G3/20 ,  H04L27/26

Abstract: Apparatus and methods are provided for accounting for the effects of automatic gain control (AGC) in a multi carrier communications system when combining pilot tone interlaces by essentially reversing the effects of the AGC. In an aspect, a method for adjusting for the effects of automatic gain control when combining pilot interlaces in an interlace filter of a communication system is disclosed. The method includes determining a normalization gain of an applied automatic gain control normalized to a predefined time (604). Additionally, two or more combining coefficients for an interlace filter are determined based on a selected criterion (606). Each of the two or more combining coefficients is then modified based on the determined normalization gain (608) to yield adjusted combining coefficients. Corresponding apparatus are also disclosed.

公开(公告)号：AT475289T

公开(公告)日：2010-08-15

申请号：AT05854932

申请日：2005-12-20

Applicant: QUALCOMM INC

Inventor： KURAPATI NAGABHUSHAN ,  BREHLER MATTHIAS

IPC: H04W68/02 ,  H04W68/00

公开(公告)号：CA2727181A1

公开(公告)日：2010-01-21

申请号：CA2727181

申请日：2009-06-23

Applicant: QUALCOMM INC

Inventor： GLAZKO SERGUEI ,  BREHLER MATTHIAS ,  KIM JE WOO ,  MAKHIJANI MAHESH A

IPC: H04K1/10 ,  H04W72/00

Abstract: Methods and apparatus are provided for increasing throughput in a wireless communication system by reducing the amount of overhead transmitted to certain user terminals. Overhead due to control information may be reduced for these certain user terminals by selecting a low repetition factor. Overhead may be further reduced for these certain user terminals by selecting a modulation/coding scheme with a higher data rate for transmitting the control information. The selection may be based on channel conditions associated with the user terminals, such as signal-to-interference-plus-noise ratios (SINRs).

公开(公告)号：CA2727202A1

公开(公告)日：2009-12-30

申请号：CA2727202

申请日：2009-01-21

Applicant: QUALCOMM INC

Inventor： PARK JONG HYEON ,  BANISTER BRIAN CLARK ,  KANG INYUP ,  KIM JE WOO ,  HURT JAMES Y ,  BREHLER MATTHIAS

IPC: H04L1/06

Abstract: Space time coding (STC) may be applied at the transmitter adding redundant information in both space and time dimensions. At the receiver, the received STC signal may be decoded using a spatial multiplexing MIMO decoding, for example, based on either Minimum Mean Square Error (MMSE) or maximum-likelihood (ML) algorithms. A selective STC decoder may incorporate both the conventional maximum ratio combining (MRC) decoding scheme and a MIMO decoding scheme. One of the STC decoding schemes may be selected, for example, based on estimated channel conditions in order to achieve a trade-off between error rate performance and computational complexity. Components used for a non-selected scheme may be powered down.