-
公开(公告)号：AU2015321606A1
公开(公告)日：2017-03-02
申请号：AU2015321606
申请日：2015-09-21
Applicant: QUALCOMM INC
Inventor： PATEL SHIMMAN , CHEN WANSHI , GAAL PETER , DAMNJANOVIC ALEKSANDAR , WEI YONGBIN , MALLADI DURGA PRASAD , XU HAO
IPC: H04L5/00
Abstract: A data structure for managing user equipment communications in a wireless communication system is presented. In some examples, the data structure may include one or more resource element blocks into which a frequency bandwidth of a downlink channel is divided within a symbol that defines a transmission time interval in a downlink subframe. Furthermore, the data structure may include a control region and a data region within at least one resource element block of the one or more resource element blocks. Additionally, the data structure may include a downlink resource grant, located within the control region, for a user equipment served by the downlink channel. In an additional aspect, a network entity and method for generating the example data structure are provided.
-
公开(公告)号：ES2360848T3
公开(公告)日：2011-06-09
申请号：ES99961920
申请日：1999-12-02
Applicant: QUALCOMM INC
Inventor： CHEN TAO , HOLTZMAN JACK , RAZOUMOV LEONID , PATEL SHIMMAN , SAINTS KEITH , TIEDEMANN EDWARD
Abstract: Un sistema de comunicaciones móviles, que comprende: una primera estación base (4) para transmitir y recibir (20, 26), respectivamente, una señal de enlace directo y una señal de enlace inverso procedente de una estación móvil (8), y para generar (24) un primer mensaje de potencia de transmisión para determinar un nivel de potencia de transmisión de dicha señal de enlace directo; una segunda estación base (6) para transmitir (32) una versión redundante de dicha señal de enlace directo a dicha estación móvil (8) y para recibir (38) dicha señal de enlace inverso procedente de dicha estación móvil, y para generar (36) un segundo mensaje de potencia de transmisión para determinar el nivel de potencia de transmisión de dicha versión redundante de dicha señal de enlace directo; un controlador centralizado (2) para recibir (10) dichos mensajes primero y segundo de potencia de transmisión, y para enviar (12, 14, 16) una instrucción de control de potencia alineada a dicha primera estación base y a dicha segunda estación base, en el que dicha primera estación base y dicha segunda estación base están en comunicación simultáneamente con dicha estación móvil, en el que dicha instrucción de control de potencia alineada es para producir patrones alineados de ajustes de control de potencia en dichas estaciones base primera y segunda para transmisiones de dicha señal de enlace directo procedente de dicha primera estación base y dicha versión redundante de dicho enlace directo desde dicha segunda estación base hasta dicha estación móvil, y en el que el controlador centralizado solo envía la instrucción de control de potencia alineada si los niveles de potencia indicados por los mensajes primero y segundo de potencia de transmisión divergen en más de un umbral de divergencia.
-
公开(公告)号：AT504179T
公开(公告)日：2011-04-15
申请号：AT99961920
申请日：1999-12-02
Applicant: QUALCOMM INC
Inventor： CHEN TAO , HOLTZMAN JACK , RAZOUMOV LEONID , PATEL SHIMMAN , SAINTS KEITH , TIEDEMANN EDWARD
-
公开(公告)号：DE60033393D1
公开(公告)日：2007-03-29
申请号：DE60033393
申请日：2000-06-12
Applicant: QUALCOMM INC
Inventor： PATEL SHIMMAN , WILBORN THOMAS
Abstract: A method and a receiver for processing a desired signal for decoding (i.e., by a decoder). In accordance with the method, an input signal that includes the desired signal and additional signals is received and filtered with a first filter having a bandwidth greater than a bandwidth of the desired signal. The filtered signal is then sampled to generate discrete time samples, which is then filtered with a discrete time matched filter. The filtered samples are then scaled with a scaling factor and quantized. A quantity related to an amplitude of the quantized samples (i.e., power) is measured, and the scaling factor is adjusted in accordance with the measured quantity. The quantized samples can be further processed (i.e., demodulated) and provided to a decoder. The desired signal can be a quadrature modulated signal, in which case matched filtering, scaling, and quantization are performed on the in-phase and quadrature components of the desired signal. The adjustment of the scaling factor can be performed by an automatic gain control (AGC) loop that compares the measured quantity (e.g., signal power of the quantized samples) against a predetermined value to generate error values. The AGC loop then filters the error values to generate the scaling factor. In an embodiment, the loop filtering can be performed with an integrator.
-
公开(公告)号：HK1084813A1
公开(公告)日：2006-08-04
申请号：HK06102656
申请日：2006-02-28
Applicant: QUALCOMM INC
Inventor： CHEN QINGXIN , PATEL SHIMMAN
Abstract: Techniques to detect for DTX frames in a "primary" transmission that may be sent in a non-continuous manner using a "secondary" transmission that is sent during periods of no transmission for the primary transmission. The primary and secondary transmissions may be the ones sent on the F-DCCH and Forward Power Control Subchannel, respectively, in an IS-2000 system. In one method, a determination is first made whether or not a frame received for the primary transmission in a particular frame interval is a good frame (e.g., based on CRC). If the received frame is not a good frame, then a determination is next made whether the received frame is a DTX frame or an erased frame based on a number of metrics determined for the primary and secondary transmissions. The metrics may include symbol error rate of the received frame, secondary transmission (e.g., PC bit) energy, and received frame energy.
-
Patent Agency Ranking
公开(公告)号：BR0307372A
公开(公告)日：2005-04-26
申请号：BR0307372
申请日：2003-01-31
Applicant: QUALCOMM INC
Inventor： KANG INYUP , PATRICK CHRISTOPHER , MEAGHER BRUCE R , PATEL SHIMMAN , LI TAO , CHEUNG JOSEPH , SRINAVAS PILLAPPAKKAM , FOERSTER GREGORY B , VARADARAJAN SRINIVA , WEI JIAN
IPC: H04B1/707
Abstract: A pilot searcher for CDMA and GPS signals. In one aspect, the searcher is operated in conjunction with a sample buffer in a "real-time" or "off-line" mode. The writing/reading of samples to/from the buffer may be performed in a TDM manner via a common port, and samples may be decimated and packed prior to storing in the buffer. In another aspect, the overall search for pilots is partitioned into a number of tasks, with each task corresponding to a search over a given sample segment and based on a particular set of parameter values. The tasks may be stored in a queue and performed one at a time based on their order in the queue. Prior to performing a new task, the parameter values for that task is downloaded to a set of configuration registers. The parameters may be ordered and linked such that only new values are downloaded.
-
公开(公告)号：HK1066654A1
公开(公告)日：2005-03-24
申请号：HK04109558
申请日：2002-03-27
Applicant: QUALCOMM INC
Inventor： CHEN TAO , HOLTZMAN JACK M , RAZOUMOV LEONID , PATEL SHIMMAN , SAINTS KEITH , TIEDEMANN EDWARD G JR
IPC: H04B20060101
-
公开(公告)号：AU2003213824A1
公开(公告)日：2003-09-29
申请号：AU2003213824
申请日：2003-03-11
Applicant: QUALCOMM INC
Inventor： EKVETCHAVIT THUNYACHATE , SIH GILBERT CHRISTOPHER , PATEL SHIMMAN
Abstract: The velocity of a wireless communications device (WCD) (106) is estimated. In response to this estimate a power control command rate is determined. The WCD 106 transmits power control signals to a base station (102) according to the power control command rate. The power control command rate may be determined by mapping the estimated velocity to a velocity range, and selecting a rate that corresponds to the velocity range as the power control command rate. Velocity is estimated by measuring a level crossing rate of a multipath signal.
-
公开(公告)号：CA2479013A1
公开(公告)日：2003-09-25
申请号：CA2479013
申请日：2003-03-11
Applicant: QUALCOMM INC
Inventor： PATEL SHIMMAN , EKVETCHAVIT THUNYACHATE , SIH GILBERT CHRISTOPHER
Abstract: The velocity of a wireless communications device (WCD) (106) is estimated. I n response to this estimate a power control command rate is determined. The WC D 106 transmits power control signals to a base station (102) according to the power control command rate. The power control command rate may be determined by mapping the estimated velocity to a velocity range, and selecting a rate that corresponds to the velocity range as the power control command rate. Velocity is estimated by measuring a level crossing rate of a multipath sign al.
-
公开(公告)号：HK1044647A1
公开(公告)日：2002-10-25
申请号：HK02106117
申请日：2002-08-21
Applicant: QUALCOMM INC
Inventor： PATEL SHIMMAN , WILBORN THOMAS
Abstract: A method and a receiver for processing a desired signal for decoding (i.e., by a decoder). In accordance with the method, an input signal that includes the desired signal and additional signals is received and filtered with a first filter having a bandwidth greater than a bandwidth of the desired signal. The filtered signal is then sampled to generate discrete time samples, which is then filtered with a discrete time matched filter. The filtered samples are then scaled with a scaling factor and quantized. A quantity related to an amplitude of the quantized samples (i.e., power) is measured, and the scaling factor is adjusted in accordance with the measured quantity. The quantized samples can be further processed (i.e., demodulated) and provided to a decoder. The desired signal can be a quadrature modulated signal, in which case matched filtering, scaling, and quantization are performed on the in-phase and quadrature components of the desired signal. The adjustment of the scaling factor can be performed by an automatic gain control (AGC) loop that compares the measured quantity (e.g., signal power of the quantized samples) against a predetermined value to generate error values. The AGC loop then filters the error values to generate the scaling factor. In an embodiment, the loop filtering can be performed with an integrator.
-
-
-
-
-
-
-
-
-
Search Results
94
records
(took 0.026 seconds)
