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公开(公告)号：EP1800428A4
公开(公告)日：2010-01-27
申请号：EP05799724
申请日：2005-09-29
Applicant: MOTOROLA INC
Inventor： RATASUK RAPEEPAT , GHOSH AMITAVA , XIAO WEIMIN
CPC classification number: H04L1/0069 , H04L1/0001 , H04L1/0003 , H04L1/0007 , H04L1/0009 , H04L1/1816 , H04L1/1819 , H04L1/1825
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公开(公告)号：ES2455765T3
公开(公告)日：2014-04-16
申请号：ES07759772
申请日：2007-03-30
Applicant: MOTOROLA INC , MOTOROLA MOBILITY LLC
Inventor： RATASUK RAPEEPAT , GHOSH AMITAVA , XIAO WEIMIN
Abstract: Método para proporcionar acuses de recibo de enlace descendente correspondientes a una transmisión de enlace ascendente que usa la solicitud automática de repetición, híbrida, a una pluralidad de equipos de usuario en un sistema (130) de comunicaciones de Multiplexado por División Ortogonal de Frecuencia, en donde un ancho de banda de frecuencias comprende una pluralidad de sub-portadoras de frecuencia, comprendiendo el método: dispersar (804) cada acuse de recibo de una pluralidad de acuses de recibo con una secuencia de dispersión seleccionada de una pluralidad de secuencias de dispersión para producir una pluralidad de acuses de recibo dispersados, en donde cada acuse de recibo está destinado a un equipo de usuario diferente de la pluralidad de equipos de usuario; usar un primer número de unidades de recursos de Multiplexado por División Ortogonal de Frecuencia, asignado a un equipo (101, 102) de usuario en una concesión de planificación de enlace ascendente para una transmisión (124) de enlace ascendente con el fin de seleccionar (1206) una secuencia de dispersión para dispersar un acuse de recibo de enlace descendente correspondiente a la transmisión de enlace ascendente del equipo de usuario; y distribuir (1210) la pluralidad de acuses de recibo dispersados por la pluralidad de sub-portadoras de frecuencia.
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公开(公告)号：CA2651254C
公开(公告)日：2013-07-09
申请号：CA2651254
申请日：2007-03-30
Applicant: MOTOROLA INC
Inventor： RATASUK RAPEEPAT , GHOSH AMITAVA , XIAO WEIMIN
Abstract: A communication system (100) provides downlink acknowledgments corresponding to uplink transmission using hybrid automatic repeat request to multiple users (101, 102) in an Orthogonal Frequency Division Multiplexing communication system, wherein a frequency bandwidth comprises multiple frequency sub-carriers, by spreading (804) each acknowledgment of multiple acknowledgments with a selected spreading sequence of multiple spreading sequences to produce multiple spread acknowledgments, wherein each acknowledgment is intended for a different user of the multiple users, and distributing (810) the multiple spread acknowledgments across the multiple frequency sub-carriers.
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公开(公告)号：GB2465927A
公开(公告)日：2010-06-09
申请号：GB201004968
申请日：2006-06-30
Applicant: MOTOROLA INC
Inventor： WANG FAN , GHOSH AMITAVA , RATASUK RAPEEPAT , WHINNETT NICK W , XIAO WEIMIN
IPC: H04L12/56
Abstract: A method to satisfy a delay requirement for a delay sensitive data connection through a scheduling, the method comprising: setting a discard timer for the delay sensitive data connection; determining an age of a packet corresponding to the delay sensitive service in a priority queue; performing a comparison between the age of a most recently successfully transmitted or time expired data packet with the discard timer setting, to determine whether the age of the compared packet is less than the discard timer setting by a predetermined margin; and calculating a new delay factor for the delay sensitive data connection based on the comparison and an old delay factor of the delay sensitive data connection. Aspects of the invention include the calculating step further comprising setting the new delay factor to a value obtained by increasing the old delay factor by a first predetermined factor and dropping the oldest packet if the age of the oldest packet is not less than the discard timer by a predetermined margin.
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公开(公告)号：CA2533360C
公开(公告)日：2009-07-14
申请号：CA2533360
申请日：2006-01-20
Applicant: MOTOROLA INC
Inventor： WANG FAN , GHOSH AMITAVA , TAN JUN , SANKARAN CHANDRASEKAR
IPC: H04J13/00
Abstract: Various embodiments are described to provide for the transmission and reception of data in an improved manner. Data transmission is improved by including in a transmitter a null generator (110) to generate an output data symbol sequence that exhibits nulls in the frequency domain at particular frequencies that an input data symbol sequence does not. A pilot inserter (120) then adds a pilot symbol sequence to this output data symbol sequence to create a combined symbol sequence. Since the pilot symbol sequence exhibits pilot signals corresponding to the nulls of the output data symbol sequence in the frequency domain, the combined symbol sequence exhibits pilots that are orthogonal to the data in the frequency domain.
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Patent Agency Ranking
公开(公告)号：DE60138538D1
公开(公告)日：2009-06-10
申请号：DE60138538
申请日：2001-03-30
Applicant: MOTOROLA INC
Inventor： LOVE ROBERT T , CLASSON BRIAN K , GHOSH AMITAVA , JALLOUL LOUAY A , CUDAK MARK C
Abstract: Separate forward dedicated and shared control channels are provided in a spread-spectrum communication. The forward dedicated control channel is used to communicate persistent control information and point to the shared control channel when further intermittent control information concerning transmission of data to a mobile station needs to be communicated. The use of a dedicated control channel for only necessary persistent control information, while only pointing to a shared control channel when it is needed, affords more efficient utilization of system resources.
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公开(公告)号：DE60041652D1
公开(公告)日：2009-04-09
申请号：DE60041652
申请日：2000-11-02
Applicant: MOTOROLA INC
Inventor： CUDAK MARK C , CLASSON BRIAN K , JALLOUL LOUAY , GHOSH AMITAVA
Abstract: A method in a communication system (100) includes transmitting from a source user (101) a first data packet (111) over a first time frame (121) having a finite time period (131), transmitting from source user (101) a second data packet (112) over a second time frame (122) immediately subsequent to first time frame (121), detecting an acknowledgment of acceptable reception of data packet associated with either first or said second data packets (111 and 112), repeating transmission of first and second data packets (111 and 112) in a sequence of first and second time frames (121 and 122) in a time frame sequence (190) until the detection.
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公开(公告)号：DE60130418T2
公开(公告)日：2008-06-05
申请号：DE60130418
申请日：2001-03-12
Applicant: MOTOROLA INC
Inventor： CUDAK MARK , GHOSH AMITAVA , CLASSON BRIAN K , LOVE ROBERT T , JALLOUL LOUAY , NIKIDES ROBERT S
IPC: G06F15/16 , H04J3/00 , H04J3/16 , H04L1/00 , H04L1/16 , H04L1/18 , H04L12/28 , H04L12/56 , H04W16/14 , H04W28/14 , H04W36/08 , H04W36/18 , H04W36/30 , H04W36/38 , H04W48/20 , H04W72/12
Abstract: A mobile station (402) selects (1802) a preferred cell site for transmitting a frame of data to be sent subsequently to the mobile station. A base station (602) of the preferred cell site schedules (1804) a transmission of the frame of data, wherein parameters for the transmission are determined by the base station from recently-measured channel and interference information. Thereafter, the base station sends (1806) the frame of data from the preferred cell site; and an active set of base stations associated with the mobile station at ones of a plurality of cell sites synchronize (1808) their data queues to reflect the transmission of the frame of data.
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公开(公告)号：DE69934991T2
公开(公告)日：2007-05-24
申请号：DE69934991
申请日：1999-06-18
Applicant: MOTOROLA INC
Inventor： GHOSH AMITAVA
Abstract: In a code division multiple access communication system providing a plurality of communication type services between a first unit (100) and a second communicating unit (200) by time-multiplexing a plurality of data channel signals (101, 102, 103) associated with the plurality of communication type services to produce a time-multiplexed data channel signal (106) which are combined to produce a combined signal (136). Combined signal (136) is transmitted from first unit (100) to be received by second unit (200). After producing a code-demultiplexed time-multiplexed data channel signal (218), and a plurality of signal-to-interference ratios estimated based on a plurality of time-multiplexed portions of signal (218), a plurality of power control thresholds corresponding to the plurality of communication type services are compared to the plurality of signal-to-interference ratios. As a result, producing a plurality of power control data bits corresponding to the plurality of communication type services based.
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公开(公告)号：DE69934991D1
公开(公告)日：2007-03-15
申请号：DE69934991
申请日：1999-06-18
Applicant: MOTOROLA INC
Inventor： GHOSH AMITAVA
Abstract: In a code division multiple access communication system providing a plurality of communication type services between a first unit (100) and a second communicating unit (200) by time-multiplexing a plurality of data channel signals (101, 102, 103) associated with the plurality of communication type services to produce a time-multiplexed data channel signal (106) which are combined to produce a combined signal (136). Combined signal (136) is transmitted from first unit (100) to be received by second unit (200). After producing a code-demultiplexed time-multiplexed data channel signal (218), and a plurality of signal-to-interference ratios estimated based on a plurality of time-multiplexed portions of signal (218), a plurality of power control thresholds corresponding to the plurality of communication type services are compared to the plurality of signal-to-interference ratios. As a result, producing a plurality of power control data bits corresponding to the plurality of communication type services based.
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