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公开(公告)号：AT402526T
公开(公告)日：2008-08-15
申请号：AT00967131
申请日：2000-09-29
Applicant: QUALCOMM INC
Inventor： CHEN TAO , LING FUYUN , HOLTZMAN JACK , JOU YU-CHEUN , LUNDBY STEIN
Abstract: A method and apparatus for wireless communications wherein a base station transmits a signal to sending data to a subscriber station through a signal beam that sweeps through the coverage area of the base station. User data addressed to the subscriber station is buffered until the signal beam angle of the signal beam allows efficient transmission. The base station may alter the beam sweep speed or the shape of the beam's radiation pattern over time to maximize system efficiency and capacity.
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公开(公告)号：HK1108978A1
公开(公告)日：2008-05-23
申请号：HK07111036
申请日：2007-10-11
Applicant: QUALCOMM INC
Inventor： REZAIIFAR RAMIN , HOLTZMAN JACK
Abstract: A method for allocating resources in a communication system having a plurality of base stations each serving multiple user stations, the method comprising: receiving, at a first base station, service requests from a plurality of user stations; dynamically allocating resources at the first base station including assigning a transmission rate for transmission of information between the first base station and each user station independently of allocation of resources by other base stations, based on a set of criteria including a set of requirements associated with each service request and interference generated by other base stations in the communication system, wherein the transmission rate assigned to each user station is determined to optimize a sum of all transmission rates assigned by the first base station to the plurality of user stations based on the set of requirements associated with each service request and wherein higher transmission rates are assigned to user stations which are relatively closer to the first base station; and transmitting rate assignment information from the first base station to the plurality of user stations.
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公开(公告)号：AT384362T
公开(公告)日：2008-02-15
申请号：AT01914638
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： SARKAR SANDIP , JOU YU-CHEUN , HOLTZMAN JACK
Abstract: A method of modifying gain tables for the reverse-link communications in a cdma2000 wireless communication network includes the steps of estimating the velocity of a mobile station for a given frame error rate (FER) and data rate, and providing three gains to choose between based on the estimated velocity in order to specify a reverse-link transmit power level. The velocity estimation may be performed using a level crossing technique, a covariance approximation technique, or a Doppler spectrum estimation technique.
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公开(公告)号：AT379881T
公开(公告)日：2007-12-15
申请号：AT99941226
申请日：1999-08-17
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN , TIEDEMANN EDWARD , HOLTZMAN JACK , TERASAWA DAISUKE
IPC: H04B1/707 , H04B1/7097 , H04B7/005 , H04L27/26
Abstract: A method for limiting peak transmit power in a CDMA communication system by transmitting a first communication signal having a first high transmit power region, and transmitting a second communication signal having a second high transmit power region. A first and a second communication signal are time offset to prevent the first and second high transmit power regions from occurring simultaneously. Time shifting only a portion of the first and second communication signals is also taught. The first and second communication signals can also include respective first and second low transmit power regions. The time offset can be selected to align one of the first and second high transmit power regions with one of the first and second low transmit power regions. The total transmit power signal can be determined and the time offset can be selected to minimize a peak level of the total transmit power signal. The communication signals are separated into a plurality of portions and portions of the first and second communication signals are time offset to re-order the sequence of transmission of the plurality of portions.
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公开(公告)号：DE69934700T2
公开(公告)日：2007-10-18
申请号：DE69934700
申请日：1999-09-10
Applicant: QUALCOMM INC
Inventor： REZAIIFAR RAMIN , HOLTZMAN JACK
Abstract: A method for allocating resources in a communication system having a plurality of base stations each serving multiple user stations, the method comprising: receiving, at a first base station, service requests from a plurality of user stations; dynamically allocating resources at the first base station including assigning a transmission rate for transmission of information between the first base station and each user station independently of allocation of resources by other base stations, based on a set of criteria including a set of requirements associated with each service request and interference generated by other base stations in the communication system, wherein the transmission rate assigned to each user station is determined to optimize a sum of all transmission rates assigned by the first base station to the plurality of user stations based on the set of requirements associated with each service request and wherein higher transmission rates are assigned to user stations which are relatively closer to the first base station; and transmitting rate assignment information from the first base station to the plurality of user stations.
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Patent Agency Ranking
公开(公告)号：AU2001249379B2
公开(公告)日：2007-02-01
申请号：AU4937901
申请日：2001-03-20
Applicant: QUALCOMM INC
Inventor： WALTON JAY R , HOLTZMAN JACK , WALLACE MARK , ANTONIO FRANKLIN P
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67.发明专利
公开(公告)号：HK1066350A1
公开(公告)日：2005-03-18
申请号：HK04109294
申请日：2004-11-25
Applicant: QUALCOMM INC
Inventor： HOLTZMAN JACK , BAO GANG
IPC: H04B20060101 , H04B7/005 , H04B7/26 , H04W52/22 , H04W52/34
Abstract: Techniques to (more accurately) estimate the transmit power available for data service in a future time period (e.g., the next frame). In accordance with one aspect, variation in the available transmit power over time is estimated. A first margin is then computed and used to account for the estimated variation in the available transmit power. The available transmit power at a future time instance (e.g., the beginning of the next frame) is predicted and reduced by the first margin to derive a more accurate estimate of the available transmit power for the next frame. In accordance with another aspect, variation in the required transmit power for a particular data user is estimated and used in scheduling data transmission to this data user. A second margin can be computed and used to account for the estimated variation in the required transmit power for the data user. Whereas the first margin accounts for variation in the (overall) available transmit power, the second margin is specific to the particular link conditions experienced by the data user.
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公开(公告)号：BR0114301A
公开(公告)日：2004-06-08
申请号：BR0114301
申请日：2001-09-27
Applicant: QUALCOMM INC
Inventor： HOLTZMAN JACK , BAO GANG
Abstract: Techniques to (more accurately) estimate the transmit power available for data service in a future time period (e.g., the next frame). In accordance with one aspect, variation in the available transmit power over time is estimated. A first margin is then computed and used to account for the estimated variation in the available transmit power. The available transmit power at a future time instance (e.g., the beginning of the next frame) is predicted and reduced by the first margin to derive a more accurate estimate of the available transmit power for the next frame. In accordance with another aspect, variation in the required transmit power for a particular data user is estimated and used in scheduling data transmission to this data user. A second margin can be computed and used to account for the estimated variation in the required transmit power for the data user. Whereas the first margin accounts for variation in the (overall) available transmit power, the second margin is specific to the particular link conditions experienced by the data user.
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公开(公告)号：BR0010474A
公开(公告)日：2002-12-31
申请号：BR0010474
申请日：2000-05-09
Applicant: QUALCOMM INC
Inventor： LING FUNYUN , HOLTZMAN JACK , WHEATLEY CHARLES E III , CHEN TAO , TIEDEMANN EDWARD G , LEUNG GILBERT
Abstract: A method and apparatus for efficient candidate frequency search while initiating a handoff in a code division multiple access communication system. The method includes when the pilot signal is transmitted by the mobile station that is power controlled to a target receive level, the traffic channel power level is increased relative to the pilot channel to improve receiver performance. An improved feature is that the received pilot received at the base station stays the same while the receiver receives extra energy in the redundant traffic symbols received to enhance the probability of correctly decoding the received frame. The base station detects the absence of the mobile station transmitted signal from the frequency of interest. If the base station is aware of the starting time and duration of the absence, it can focus its detection during this predetermined time period. The performance can be improved if the absence of the signal is spread across two frames at the frame boundary.
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公开(公告)号：BR0012541A
公开(公告)日：2002-11-26
申请号：BR0012541
申请日：2000-07-18
Applicant: QUALCOMM INC
Inventor： HOLTZMAN JACK , WARRIER DILIP G
IPC: H04B1/7103 , H04B1/00 , H04B1/10 , H04B1/707 , H04B1/7107 , H04B7/26
Abstract: Several methods and corresponding apparatus reduce multiple access interference in code division multiple access communications systems (100) through successive interference cancellation techniques. An estimate of reliability of cancellation of a strongest interfering signal is formed from analysis of a pilot signal associated with the strongest signal. The estimate is used to derive a weight that is multiplied by a replica of the strongest signal to provide a weighted replica. The weighted replica is subtracted from a delayed version of the received channel. As a result, interference cancellation is robustly implemented when the strongest signal replica is most likely to be accurate and is not robustly implemented when the strongest signal replica is not likely to be accurate.; This avoids combining a replica of the strongest signal with the received channel when the replica is more likely to contribute additional interference rather than reduce it.
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