公开(公告)号：AU2003287351A1

公开(公告)日：2004-06-07

申请号：AU2003287351

申请日：2003-10-30

Applicant: MOTOROLA INC

Inventor： LOVE ROBERT T ,  STEWART KENNETH A ,  GHOSH AMITAVA

IPC: H04B7/00 ,  H04J11/00 ,  H04W28/04 ,  H04W72/08 ,  H04W72/12 ,  H04J3/24

Abstract: A communication system (300, 1000) supports Hybrid Automatic Repeat Request (H-ARQ), Adaptive Modulation and Coding (AMC), active set handoff, and scheduling functions in a distributed fashion by allowing a mobile station (MS) (1014) to signal control information corresponding to an enhanced reverse link transmission to Active Set base transceiver stations (BTSs) (301, 303, 304) and by allowing the BTSs to perform control functions (314, 316, 318) that were supported by an radio network controller (RNC) in the prior art. The communication system allows time and SIR-based H-ARQ flush functions at the BTSs during soft handoff (SHO), provides a control channel structure to support scheduling, H-ARQ, AMC functions for an enhanced reverse link, or uplink, channel (414) in order to maximize throughput, and enables an MS in a SHO region to choose a scheduling assignment corresponding to a best TFRI out of multiple assignments it receives from multiple active set BTSs.

公开(公告)号：CA2220965A1

公开(公告)日：1997-10-09

申请号：CA2220965

申请日：1997-01-15

Applicant: MOTOROLA INC

Inventor： LING FUYUN ,  STEWART KENNETH A ,  WANG MICHAEL MAO

IPC: H04J13/02 ,  H03M13/23 ,  H04B1/707 ,  H04L1/00 ,  H04L1/20 ,  H04L25/02 ,  H04Q7/38 ,  H04Q7/22

Abstract: A receiver (500) utilizes parameters generated by a Viterbi decoder (530) to determine one of a plurality of coding rates in which user information is transmitted. The receiver (500) combines the parameters in a predetermined manner, the result of which is a detection statistic (dij). By utilizing the detection statistic (dij), the coding rate at which user information is transmitted is accurately determined.

公开(公告)号：CA2220068A1

公开(公告)日：1997-09-18

申请号：CA2220068

申请日：1997-01-03

Applicant: MOTOROLA INC

Inventor： LOVE ROBERT T ,  BAYER WILLIAM R ,  STEWART KENNETH A

IPC: H04B7/005 ,  H04B7/26 ,  H04L1/20 ,  H04W52/12 ,  H04W52/26 ,  H04W52/36 ,  H04W52/40 ,  H04B1/69 ,  H04B7/216 ,  H04Q7/22

Abstract: Power control in a spread-spectrum communication system takes place by dynamically adjusting the step-down size of a power control threshold (407415) based on an acquired number of poor-quality frames (405). The step-down size of the threshold is increased or decreased depending on an amount of frame erasures detected by the system (407-415). Additionally, full-rate or sub-rate frame quality is used to dynamically adjust the step-down size of a power control threshold.

公开(公告)号：CA2157024A1

公开(公告)日：1995-08-24

申请号：CA2157024

申请日：1994-12-22

Applicant: MOTOROLA INC

Inventor： STEWART KENNETH A ,  KOTZIN MICHAEL D

IPC: G10L19/04 ,  G10L19/00 ,  G10L19/12 ,  G10L19/14 ,  H03M7/30 ,  H04B7/216 ,  H04L1/00

Abstract: A code division multiple access (CDMA) communication system reduces system self-interference and enhances system capacity by making rate selection decisions for individual speech encoders in concert with other speech encoders. The system utilizes perpetually weighted error metrics (401) as input into a rate controller (404) which determines and provides selected rates (402) back to the encoders (105). The system provides optimum voice quality and system capacity in that it allows specific encoders to decrease their rate, which improves capacity, as necessary while allowing other encoders to maintain their rates. This prevents needless degradation in voice quality at those times when system capacity needs to be temporarily increased.

公开(公告)号：FI953609A0

公开(公告)日：1995-07-28

申请号：FI953609

申请日：1995-07-28

Applicant: MOTOROLA INC

Inventor： LOVE ROBERT T ,  STEWART KENNETH A ,  RAPALA BRYAN

IPC: H04L27/22 ,  H04B1/707 ,  H04L27/227 ,  H04L

Abstract: The present invention provides a downconverter method and apparatus for downconverting a multiphase modulated signal. The downconverter can be implemented in a multi-phase receiver such as a quadrature receiver. An analog-to-digital converter (103) converts an intermediate frequency signal to a digital signal at a sampling rate. A Hilbert transformation filter (104) and a delay element (105) connected in parallel provide respective passband quadrature and in-phase components of the digital signal. A digital translator (107) alters the passband quadrature and in-phase components based on a predetermined pattern to provide a baseband quadrature signal and a baseband in-phase signal. The digital translator (107) can be a pseudorandom sequence demodulator for demodulating a code division multiple access (CDMA) signal. Various types of DC estimation can also be provided in addition to automatic gain control.

公开(公告)号：FI953609A

公开(公告)日：1995-07-28

申请号：FI953609

申请日：1995-07-28

Applicant: MOTOROLA INC

Inventor： LOVE ROBERT T ,  STEWART KENNETH A ,  RAPALA BRYAN

IPC: H04L27/22 ,  H04B1/707 ,  H04L27/227 ,  H04L

Abstract: The present invention provides a downconverter method and apparatus for downconverting a multiphase modulated signal. The downconverter can be implemented in a multi-phase receiver such as a quadrature receiver. An analog-to-digital converter (103) converts an intermediate frequency signal to a digital signal at a sampling rate. A Hilbert transformation filter (104) and a delay element (105) connected in parallel provide respective passband quadrature and in-phase components of the digital signal. A digital translator (107) alters the passband quadrature and in-phase components based on a predetermined pattern to provide a baseband quadrature signal and a baseband in-phase signal. The digital translator (107) can be a pseudorandom sequence demodulator for demodulating a code division multiple access (CDMA) signal. Various types of DC estimation can also be provided in addition to automatic gain control.

公开(公告)号：BRPI0815355A2

公开(公告)日：2015-02-10

申请号：BRPI0815355

申请日：2008-08-13

Applicant: MOTOROLA INC

Inventor： NORY RAVIKIRAN ,  FERNANDES EDGAR ,  LOVE ROBERT ,  NANGIA VIJAY ,  SCHWENT DALE ,  STEWART KENNETH A

IPC: H04B17/00 ,  H04B7/005

Abstract: The present disclosure describes a method and apparatus for transmit power calibration in a frequency division multiplexed wireless system (100). The method may include receiving (315) an uplink scheduling grant at a user equipment (120), establishing (320) a desired power level based on at least the uplink scheduling grant, and setting (325) hardware power settings based on the desired power level. The method may also include transmitting (330) data in a first subframe at a first power level based on the hardware power settings, measuring (335) the first power level in the first subframe, and determining (340) a difference between the desired power level and the measured first power level. The method may additionally include modifying (345) the hardware power settings based on the difference and transmitting (350) at a second power level based on the modified hardware power settings in a next transmission corresponding to the transmission in the first subframe.

公开(公告)号：CA2695964C

公开(公告)日：2014-01-14

申请号：CA2695964

申请日：2008-08-13

Applicant: MOTOROLA INC

Inventor： NORY RAVIKIRAN ,  FERNANDES EDGAR ,  LOVE ROBERT ,  NANGIA VIJAY ,  SCHWENT DALE ,  STEWART KENNETH A

IPC: H04W52/08 ,  H04B17/00 ,  H04W52/14 ,  H04W52/50

Abstract: The present disclosure describes a method and apparatus for transmit power calibration in a frequency division multiplexed wireless system (100). The method may include receiving (320), at a user equipment (120), a signal from a base station (130) in a frequency division multiplexed wireless system and mapping (330), in response to receiving the signal from the base station, a power control calibration region to an uplink symbol in a subframe to establish a mapped uplink symbol using predetermined criteria. The method can also include calibrating (350) a transmit power based on transmission in the calibration region and transmitting (360) data at the calibrated transmit power on at least one other symbol following the mapped uplink symbol.

公开(公告)号：BRPI0715679A2

公开(公告)日：2013-07-09

申请号：BRPI0715679

申请日：2007-08-09

Applicant: MOTOROLA INC

Inventor： BACHU RAJA S ,  BUCKLEY MICHAEL E ,  KUCHIBHOTLA RAVI ,  LOVE ROBERT T ,  STEWART KENNETH A ,  ZHANG JIANZHONG

IPC: H04W72/12

Abstract: A base station ( 103 ) assigns a set of mobile stations ( 101 ) to a group wherein the group will share a set of radio resources ( 770 ). A control field ( 1103 ) may be sent with a payload field ( 1105 ) wherein the control field ( 1103 ) and payload field ( 1105 ) are sent using a single Orthogonal Variable Spreading Factor or a single Walsh Code ( 1101 ) wherein various modulation and coding schemes may be applied to the control field ( 1103 ) and payload field ( 1105 ) such that different modulation and coding schemes may be used within the single channel. HARQ is handled by sending a single retransmission if a NACK message is received or no ACK/NACK message is received at all.

公开(公告)号：ES2391620T3

公开(公告)日：2012-11-28

申请号：ES10011122

申请日：2006-07-10

Applicant: MOTOROLA INC ,  MOTOROLA MOBILITY LLC

Inventor： LOVE ROBERT T ,  BACHU RAJA S ,  CLASSON BRIAN K ,  NORY RAVIKIRAN ,  STEWART KENNETH A ,  SUN YAKUN

IPC: H04W72/08

Abstract: Un método en un dispositivo de comunicación inalámbrica para informar de un Indicador de Calidad de CanalCQI a una estación base en un sistema de OFDMA, comprendiendo el método:presentar informe de CQI utilizando una operación de banda ancha de CQI mediante informe de CQI parauna pluralidad de bandas frecuencia expresadas como un único valor;presentar informe de CQI utilizando una operación de banda estrecha de CQI mediante informe de valoresde CQI específicos de banda para una o más bandas de frecuencia;caracterizado porconmutar de manera autónoma entre la operación de CQI de banda ancha y la operación de CQI de bandaestrecha.