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公开(公告)号：CA2409065C
公开(公告)日：2009-11-24
申请号：CA2409065
申请日：2001-06-28
Applicant: QUALCOMM INC
Inventor： LIN YU-CHUAN , GLAZKO SERGUEI , ACHOUR BAAZIZ
Abstract: A system and method for dectecting discontinuous transmission (DTX) frames. The inventive method includes the steps of receiving data transmitted in a pluralitz of frames (62); classifzing each of the frames (63); analyzing the classification of a number of successive frames of the received data and providing a metric with respect thereto; and determining, in response to the metric, if a frame is a discontinuous frame (66). In the illustrative embodiment, the step of classifzing includes the step of error checking the frames using a cyclic redundancz check (CRC) error checking protocol. The received frames are classified as good frames (G), erasureframes (E), or discontinuous frames (D). A numerical value is assigned toe ach of the frame s based on the classification thereof. Next, the frames are filtered tp provic e an output Yn=Yn-1+Xn where 'n' is a frame number, Yn is the filter output fo r a given frame n, Yn-1 is the filter output for a previous frame, and Xn is a stream of input frames. A threshold is set for the output Yn to facilitate t he detection of discontinuous frames. That is, a detection of a discontinuous transmisson frame is indicated when a frame is classified as an 'erasure' an d the filter output exceeds the threshold. On the detection of a discontinuous frame, the classification of the frame is changed from 'erasure' to 'discontinuous'. By reclassifying improperly classified erasure frames, the mobile receiver is inhibited from requesting retransmission of the frames of a change in the transmit power level. Consequently, network throughput and capacity are optimized and system power is conserved.
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公开(公告)号：AT439024T
公开(公告)日：2009-08-15
申请号：AT07005160
申请日：1998-02-10
Applicant: QUALCOMM INC
Inventor： JOU YU-CHEN , LIN YU-CHUAN , ODENWALDER JOSEPH , TIEDEMANN EDWARD
IPC: H04L29/06 , H04W72/04 , H04B7/005 , H04B7/26 , H04L29/08 , H04W28/18 , H04W28/20 , H04W28/22 , H04W52/28 , H04W52/34 , H04W72/12
Abstract: In a communication system capable of variable rate transmission, scheduling of high speed data transmission improves utilization of the forward link and decreases the transmission delay in data communication. Each remote station is assigned one primary code channel for the duration of the communication with a cell. Secondary code channels of various types and transmission capabilities can be assigned by a channel scheduler for scheduled transmission of data traffic at high rates. Secondary code channels are assigned in accordance with a set of system goals, a list of parameters, and collected information on the status of the communication network. Secondary code channels can be grouped into sets of secondary code channels. Data is partitioned in data frames and transmitted over the primary and secondary code channels which have been assigned to the scheduled user.
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公开(公告)号：HK1106890A1
公开(公告)日：2008-03-20
申请号：HK07112328
申请日：2007-11-12
Applicant: QUALCOMM INC
Inventor： TIEDEMANN EDWARD G JR , LIN YU-CHUAN , JOU YU-CHEUN , ODENWALDER JOSEPH P
IPC: H04L29/06 , H04B20060101 , H04B7/005 , H04B7/26 , H04L29/08 , H04W20090101 , H04W28/18 , H04W28/20 , H04W28/22 , H04W52/28 , H04W52/34 , H04W72/04 , H04W72/12
Abstract: In a communication system capable of variable rate transmission, scheduling of high speed data transmission improves utilization of the forward link and decreases the transmission delay in data communication. Each remote station is assigned one primary code channel for the duration of the communication with a cell. Secondary code channels of various types and transmission capabilities can be assigned by a channel scheduler for scheduled transmission of data traffic at high rates. Secondary code channels are assigned in accordance with a set of system goals, a list of parameters, and collected information on the status of the communication network. Secondary code channels can be grouped into sets of secondary code channels. Data is partitioned in data frames and transmitted over the primary and secondary code channels which have been assigned to the scheduled user.
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公开(公告)号：DE69838767D1
公开(公告)日：2008-01-03
申请号：DE69838767
申请日：1998-02-10
Applicant: QUALCOMM INC
Inventor： JOU YU-CHEN , LIN YU-CHUAN , ODENWALDER JOSEPH P , TIEDEMANN EDWARD G
IPC: H04L29/06 , H04B7/005 , H04B7/26 , H04L29/08 , H04W28/18 , H04W28/20 , H04W28/22 , H04W52/28 , H04W52/34 , H04W72/04 , H04W72/12
Abstract: In a communication system capable of variable rate transmission, scheduling of high speed data transmission improves utilization of the forward link and decreases the transmission delay in data communication. Each remote station is assigned one primary code channel for the duration of the communication with a cell. Secondary code channels of various types and transmission capabilities can be assigned by a channel scheduler for scheduled transmission of data traffic at high rates. Secondary code channels are assigned in accordance with a set of system goals, a list of parameters, and collected information on the status of the communication network. Secondary code channels can be grouped into sets of secondary code channels. Data is partitioned in data frames and transmitted over the primary and secondary code channels which have been assigned to the scheduled user.
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公开(公告)号：CA2251397C
公开(公告)日：2007-10-30
申请号：CA2251397
申请日：1998-02-10
Applicant: QUALCOMM INC
Inventor： TIEDEMANN EDWARD G JR , LIN YU-CHUAN , JOU YU-CHUEN , ODENWALDER JOSEPH P
IPC: H04L29/06 , H04B7/005 , H04B7/26 , H04L29/08 , H04W28/18 , H04W28/20 , H04W28/22 , H04W52/28 , H04W52/34 , H04W72/04 , H04W72/12
Abstract: In a communication system capable of variable rate transmission, schedulin g of high speed data transmission improves utilization of the forward link and decreases the transmission delay in data communication. Each remote station (6) is assigned one primary code channel for the duration of the communication with a cell. Secondary code channels of various types and transmission capabiliti es can be assigned by a channel scheduler (12) for scheduled transmission of data traffic at high rates. Secondary code channels are assigned in accordance with a set of system goals, a list of parameters, and collected information on the status of the communication network. Secondary code channels can be grouped into sets of secondary code channels. Data is partitioned in data frames and transmitted over the primary and secondary code channels which have been assigned to the scheduled user.
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Patent Agency Ranking
公开(公告)号：DE60029485D1
公开(公告)日：2006-08-31
申请号：DE60029485
申请日：2000-05-17
Applicant: QUALCOMM INC
Inventor： TIEDEMANN G , JOU YU-CHEUN , LIN YU-CHUAN
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公开(公告)号：AT333769T
公开(公告)日：2006-08-15
申请号：AT00936058
申请日：2000-05-17
Applicant: QUALCOMM INC
Inventor： TIEDEMANN EDWARD G JR , JOU YU-CHEUN , LIN YU-CHUAN
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公开(公告)号：DE60023152T2
公开(公告)日：2006-07-13
申请号：DE60023152
申请日：2000-08-10
Applicant: QUALCOMM INC
Inventor： CHEN TAO , LIN YU-CHUAN
Abstract: The present invention is a novel and improved method and system for performing the pilot frequency tracking operation for coherent demodulation in a system employing a gated pilot signal. In particular, the present invention describes a method and apparatus in which two frequency tracking loops operate in parallel. The first frequency tracking loop performs its tracking operation based on the hypothesis that the received pilot is continuous throughout the frame's duration. The second frequency tracking loop performs the tracking operation based on the hypothesis that the received pilot is discontinuous and is only present for a portion of the frame's duration.
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69.发明专利
公开(公告)号：ES2249841T3
公开(公告)日：2006-04-01
申请号：ES98944479
申请日：1998-08-20
Applicant: QUALCOMM INC
Inventor： CHEN TAO , LIN YU-CHUAN
Abstract: Un método para programar transmisiones a alta velocidad sobre un enlace ascendente en una red de comunicación que comprende uno o más sistemas, comprendiendo cada sistema una o más estaciones base (4), cada estación base (4) en comunicación con cero o más estaciones remotas (6), dicho método caracterizado por: determinar un estado de transferencia flexible de un estación remota (6) que pide la transmisión a alta velocidad; determinar una capacidad de enlace ascendente para cada estación base (4) en comunicación con dicha estación remota (6); programar una velocidad de transmisión de alta capacidad a un nivel de estación base si dicha estación remota (6) no está en transferencia flexible; programar una velocidad de transmisión de alta capacidad a nivel de selector si dicha estación remota (6) está en transferencia flexible con estaciones base (4) que están dentro de un mismo sistema; programar una velocidad de transmisión de alta capacidad a nivel de red si dicha estación remota (6) está entransferencia flexible con estaciones base (4) que están dentro de diferentes sistemas; y trasmitir dicha velocidad de transmisión de alta capacidad a dicha estación remota (6); donde dicha velocidad de transmisión de alta capacidad se basa en dicha capacidad disponible de enlace ascendente para cada estación base (4) en comunicación con dicha estación remota (6).
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公开(公告)号：AT301377T
公开(公告)日：2005-08-15
申请号：AT98944479
申请日：1998-08-20
Applicant: QUALCOMM INC
Inventor： CHEN TAO , LIN YU-CHUAN
Abstract: In a communication system capable of variable rate transmission, multi-level scheduling improves utilization of the reverse link and decreases the transmission delay in data communication. Multi-level scheduling comprises base station level scheduling, selector level (system level) scheduling, and network level scheduling. Network level scheduling is performed for base station in soft handoff with base stations which are controlled by different selector scheduler. Selector level scheduling is performed for remote stations in soft handoff with base stations which are controlled by the same selector scheduler. And base station level scheduling is performed for remote stations not in soft handoff. Base station level scheduled is performed using residual capacity after higher level scheduling have been performed. Each scheduling level can have different scheduling interval.
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