-
41.发明专利
公开(公告)号：ES2318353T3
公开(公告)日：2009-05-01
申请号：ES04795424
申请日：2004-10-14
Applicant: QUALCOMM INC
Inventor： SENDONARIS ANDREW , SHIU DA-SHAN , FARMER DOMINIC GERARD , LIN JEREMY H , SUBRAHMANYA PARVATHANATHAN , ROWLAND THOMAS K
Abstract: Un dispositivo de comunicaciones, que comprende: medios (108) para producir una primera señal de referencia (108b) y una segunda señal de referencia (108a); medios (106) para recuperar una primera señal de información de una primera portadora usando la primera señal de referencia; medios (102) para recuperar una segunda señal de información de una segunda portadora usando la segunda señal de referencia, estando configurados los medios para recuperar la segunda señal de información para operar en un estado activo y en un estado en reposo; medios para detectar un error de frecuencia (116c) en la primera señal de información; y caracterizado porque además comprende medios (116) para sintonizar de manera periódica la primera señal de referencia para reducir el error de frecuencia, en el que los medios para sintonizar la primera señal de referencia para reducir el error de frecuencia hacen posible la sintonización de la primera señal de referencia si el error de frecuencia cruza un primer umbral, y una vez habilitado, continuar sintonizando la primera señal de referencia hasta que el error de frecuencia sea reducido por debajo de un segundo umbral, y en el que el primer umbral y el segundo umbral son una función del estado del medio para recuperar la segunda señal de información proveniente de la segunda portadora.
-
公开(公告)号：AT415766T
公开(公告)日：2008-12-15
申请号：AT04795424
申请日：2004-10-14
Applicant: QUALCOMM INC
Inventor： SENDONARIS ANDREW , SHIU DA-SHAN , FARMER DOMINIC GERARD , LIN JEREMY H , SUBRAHMANYA PARVATHANATHAN , ROWLAND THOMAS K
Abstract: Systems and techniques are disclosed relating to wireless communications. These systems and techniques involve wireless communications wherein a device may be configured to recover an information signal from a carrier using a reference signal, detect a frequency error in the information signal; and periodically tune the reference signal to reduce the frequency error. To prevent GPS performance degradation during LO tuning, a tuning indicator signal may be generated and provided to the GPS receiver to disable GPS operation.
-
公开(公告)号：AT413021T
公开(公告)日：2008-11-15
申请号：AT03791974
申请日：2003-08-29
Applicant: QUALCOMM INC
Inventor： SENDONARIS ANDREW , SHIU DA-SHAN , PATTERSON DAVID M , SUBRAHMANYA PARVATHANATHAN , TERASAWA DAISUKE
Abstract: A method and apparatus for using information about a mobile terminal's location relative to a base station can improve performance of a communication system. In addition, information about the mobile terminal's velocity relative to the base station may be used to improve performance of the communication system. The location information may be used to estimate a nominal PN offset, and a set of PN offset to use, for processing communication signals. The velocity information may be used to estimate a nominal frequency of the communication signals.
-
公开(公告)号：DE60323761D1
公开(公告)日：2008-11-06
申请号：DE60323761
申请日：2003-10-02
Applicant: QUALCOMM INC
Inventor： SHIU DA-SHAN , MALLADI DURGA P
IPC: H04Q7/00
Abstract: Multiple access interference may be substantially removed by introducing a near-far situation in which a near mobile and a far mobile ("near" and "far" based on signal strength) are selected, resources allocated among these and other mobiles, and the data is packetized for transmission during a transmission interval such that the data intended for the far mobile is transmitted along with the data intended for the near mobile. Forward link signals are then appropriately scheduled. Signals intended for the far mobile and the near mobile are decoded from the composite signal received at the near mobile. The signal intended for the far mobile is then removed from the composite signal received at the near mobile.
-
公开(公告)号：DE60305655D1
公开(公告)日：2006-07-06
申请号：DE60305655
申请日：2003-02-27
Applicant: QUALCOMM INC
Inventor： TEAGUE EDWARD HARRISON , AMERGA MESSAY , LIN JEREMY , SHIU DA-SHAN
Abstract: Techniques for tracking closely spaced multipath and preventing finger merge without monitoring relative positions between each of a plurality of fingers are disclosed. In one aspect, motion limits are determined for each finger. Time-tracking commands that would move the position of a finger outside its respective motion limits are suppressed. In another aspect, motion limits are updated dynamically, the motion limits of each finger determined in accordance with the motion limits of fingers adjacent to it. Various other aspects are also presented. These aspects have the benefit of preventing finger merge, which allows the allocation of multiple fingers to closely spaced multipath, thus increasing performance and system capacity, and mitigating misallocation of system resources.
-
Patent Agency Ranking
公开(公告)号：BR0315024A
公开(公告)日：2005-08-16
申请号：BR0315024
申请日：2003-10-02
Applicant: QUALCOMM INC
Inventor： SHIU DA-SHAN , MALLADI DURGA P
IPC: H04B1/707
Abstract: Multiple access interference may be substantially removed by introducing a near-far situation in which a near mobile and a far mobile ("near" and "far" based on signal strength) are selected, resources allocated among these and other mobiles, and the data is packetized for transmission during a transmission interval such that the data intended for the far mobile is transmitted along with the data intended for the near mobile. Forward link signals are then appropriately scheduled. Signals intended for the far mobile and the near mobile are decoded from the composite signal received at the near mobile. The signal intended for the far mobile is then removed from the composite signal received at the near mobile.
-
47.发明专利
公开(公告)号：HK1070486A1
公开(公告)日：2005-06-17
申请号：HK05102907
申请日：2005-04-07
Applicant: QUALCOMM INC
Inventor： SHIU DA-SHAN , WILLENEGGER SERGE , CHI RICHARD , SUBRAHMANYA PARVATHANATHAN , HSU CHIH-PING
IPC: H04J13/00 , H04B20100101 , H04B1/04 , H04B7/005 , H04B7/26 , H04L20100101 , H04W52/12 , H04W52/20 , H04W52/28
Abstract: Techniques to more efficiently control the transmit power for a data transmission that uses a number of formats (e.g., rates, transport formats). Different formats for a given data channel (e.g., transport channel) may require different target SNIRs to achieved a particular BLER. In one aspect, individual target BLER may be specified for each format of each data channel. In another aspect, various power control schemes are provided to achieve different target SNIRs for different formats. In a first power control scheme, multiple individual outer loops are maintained for multiple formats. For each format, its associated outer loop attempts to set the target SNIR such that the target BLER specified for that format is achieved. In a second power control scheme, multiple individual outer loops are maintained and the base station further applies different adjustments to the transmit power levels for different formats.
-
公开(公告)号：HK1066347A1
公开(公告)日：2005-03-18
申请号：HK04109153
申请日：2004-11-19
Applicant: QUALCOMM INC
Inventor： SHIU DA-SHAN , AGRAWAL AVNEESH , TERASAWA DAISUKE
IPC: H03M20060101 , H03M13/27 , H04B1/707
Abstract: A receiver unit for use in a CDMA system and including a channel processor, a buffer, and a data processor. The channel processor processes samples for one or more physical channels for each time interval to provide symbols. The buffer is operated as a number of memory banks. Each memory bank is associated with a respective time interval and stores symbols associated with that time interval. The data processor retrieves symbols for a particular "traffic" from one or more memory banks and processes the retrieved symbols. For the W-CDMA system, each traffic includes one or more radio frames for a particular transmission time interval. The receiver unit typically further includes a controller that directs the storage and retrieval of symbols to and from the memory banks and a decoder that decodes symbols processed by the data processor. For each time interval, radio frames for physical channels received starting within that time interval can be stored to permutated locations of designated sections of the memory bank. Radio frames associated with a particular CCTrCH can be stored to contiguous sections of the memory bank. Symbols for a particular traffic can be retrieved from one or more memory banks in permutated order.
-
公开(公告)号：AU2003228875A1
公开(公告)日：2003-11-11
申请号：AU2003228875
申请日：2003-05-06
Applicant: QUALCOMM INC
Inventor： SHIU DA-SHAN
-
50.发明专利
公开(公告)号：AU2001298085A1
公开(公告)日：2003-09-09
申请号：AU2001298085
申请日：2001-09-05
Applicant: QUALCOMM INC
Inventor： SHIU DA-SHAN , AGRAWAL AVNEESH , TERASAWA DAISUKE
Abstract: Techniques for processing transmissions in a communications (e.g., CDMA) system. Samples are received and assembled into one or more traffics, with each traffic including one or more portions (e.g., radio frames, coded blocks) suitable for processing independently. The priority of each portion is determined based on its processing delays requirement, which can be estimated based on, for example, the time interval over which the samples in the traffic are interleaved, the processing deadline, and so on. A portion in a traffic having the highest priority is selected and scheduled for processing. The processing can include reordering the samples in the selected portion in accordance with a particular reordering scheme, accumulating redundant samples and inserting place holders (e.g., don't cares) for deleted samples in the selected portion, and decoding the reordered samples in the selected portion. The processing of the traffic may be interrupted, in which case the state information related to the processing of the interrupted traffic is saved. A portion in another traffic can then be selected and scheduled for processing. Thereafter, the processing on the interrupted traffic can be resumed using the saved state information.
-
-
-
-
-
-
-
-
-
Search Results
101
records
(took 0.026 seconds)
