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公开(公告)号：HK1064818A1
公开(公告)日：2005-02-04
申请号：HK04107616
申请日：2004-10-05
Applicant: QUALCOMM INC
Inventor： HOLTZMAN JACK M , CHEN TAO , RAZOUMOV LEONID
IPC: H04B20060101 , H04B7/005 , H04B7/26
Abstract: Method and apparatus for controlling transmission power in a closed loop power control system, wherein power control commands are based on the energy of the previous power control commands. In one embodiment, the method compares changes in the received energy of received power control commands against expected changes in those commands based on previously transmitted power control commands, and identifies suspicious responses to said previously transmitted power control commands. Hypothesis testing of the received power control commands is performed accordance any identified suspicious responses.
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公开(公告)号：HK1062509A1
公开(公告)日：2004-11-05
申请号：HK04104684
申请日：2004-06-30
Applicant: QUALCOMM INC
Inventor： RAZOUMOV LEONID , LUNDBY STEIN A , HOLTZMAN JACK M , TIEDEMANN EDWARD G , ODENWALDER JOSEPH P
IPC: H04L20060101 , H04B1/7103 , H04B7/005 , H04L1/00 , H04L1/20 , H04W52/36
Abstract: A method for coherent estimation of the traffic-to-pilot energy ratio is presented. A received preamble is decoded (20), and then re-encoded (22). The received preamble is then multiplied by the re-encoded preamble (23). The results are summmed (24), squared (26), and then divided by a pilot energy value (28). In another method, a message (41) carrying energy information can be inserted between a subpacket preamble (40) and a subpacket (42).
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公开(公告)号：BR0207875A
公开(公告)日：2004-04-20
申请号：BR0207875
申请日：2002-01-23
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN A , RAZOUMOV LEONID
Abstract: Method and apparatus for providing link quality feedback to a transmitter (32,34). In one embodiment, a periodic link quality message is transmitted on a gated channel, while continuous differential indicators are transmitted. Between quality messages, the differential indicators track the quality of the link. In one embodiment, a remote station includes a differential analyzer (212) to determine the change in successive channel quality measurements. The quality metric and the differential indicator are used for providing power control commands and rate control commands to teh base station. The quality metric and the differential indicator are transmitted at two different frequencies.
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公开(公告)号：HK1055514A1
公开(公告)日：2004-01-09
申请号：HK03107785
申请日：2003-10-29
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN , CASACCIA LORENZO , RAZOUMOV LEONID
Abstract: Techniques for puncturing symbols in a communications system. S symbols are received for a frame having a capacity of N symbols, with S being greater than N. P symbols need to be punctured so that remaining symbols fit into the frame. A number of puncture distances, D1 through DN, are computed based on S and P. A particular number of symbol punctures is determined for each computed puncture distance. P1 through PN symbol punctures are then performed at the distances of D1 through DN, respectively. For a more even distribution of the symbol punctures, each of the distances D1 through DN can be selected to be greater than or equal to a minimum puncture distance Dmin defined as D min = S / P , where L denotes a floor operator. The symbol punctures at each computed distance can be performed together or distributed with symbol punctures at other distances.
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公开(公告)号：NO20031827L
公开(公告)日：2003-06-20
申请号：NO20031827
申请日：2003-04-24
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN A , RAZOUMOV LEONID , BAO GANG
Abstract: An apparatus operative to transmit packet data via at least one of a first set of channels in a wireless communications system, the system supporting packet data transmissions and low delay data transmissions over a plurality of transmission channels. The apparatus comprising means for transmitting packet data via a set of packet data channels; means for transmitting control information associated with the packet data via a signalling channel, wherein the signalling channel is separate from the set of packet data channels, and wherein the control information identifies a target recipient of associated packet data; means for receiving data requests from a plurality of mobile units; means for determining a transmission schedule according to the data requests; means for assigning a priority level to each of the plurality of mobile units; and means for determining a traffic schedule among the plurality of mobile units based on the assigned priority level.
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Patent Agency Ranking
公开(公告)号：NO20021653L
公开(公告)日：2002-06-07
申请号：NO20021653
申请日：2002-04-08
Applicant: QUALCOMM INC
Inventor： RAZOUMOV LEONID , HOLTZMAN JACK M , LUNDBY STEIN A
Abstract: Method and apparatus for transmitting a signal at a predetermined level of reliability using retransmission of erroneously transmitted frames so as to minimize total transmission energy. The transmitting station evaluates the frame error rate (FER) as a function of energy. Next, the transmitting station determines a combination of initial transmission energies and retransmission energies that will provide the target level of reliability while minimizing the total transmission energy employed in the initial transmission and the retransmissions. The transmitting station transmits a frame with an initial transmission energy. Employing conventional feedback methods the transmitting station is alerted to the occurrence of frame errors at the receiving station. The transmitting station upon notification of a frame error retransmits the frame with an energy determined to minimize the total energy required to transmit the frame with a predetermined level of reliability.
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公开(公告)号：AU3973402A
公开(公告)日：2002-05-27
申请号：AU3973402
申请日：2001-10-24
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN A , RAZOUMOV LEONID , BAO GANG
Abstract: An apparatus operative to transmit packet data via at least one of a first set of channels in a wireless communications system, the system supporting packet data transmissions and low delay data transmissions over a plurality of transmission channels. The apparatus comprising means for transmitting packet data via a set of packet data channels; means for transmitting control information associated with the packet data via a signalling channel, wherein the signalling channel is separate from the set of packet data channels, and wherein the control information identifies a target recipient of associated packet data; means for receiving data requests from a plurality of mobile units; means for determining a transmission schedule according to the data requests; means for assigning a priority level to each of the plurality of mobile units; and means for determining a traffic schedule among the plurality of mobile units based on the assigned priority level.
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38.发明专利
公开(公告)号：AU7598901A
公开(公告)日：2002-02-05
申请号：AU7598901
申请日：2001-07-17
Applicant: QUALCOMM INC
Inventor： RAZOUMOV LEONID , LING FUNYUN , LUNDBY STEIN
Abstract: Techniques for puncturing symbols in a communications system are disclosed. S symbols are received for a frame having a capacity of N symbols, with S being greater than N. P symbols need to be punctured so that remaining symbols fit into the frame. A number of puncture distances, D1 through DN, are computed based on S and P. A particular number of symbol punctures is determined for each computed puncture distance. P1 through PN symbol punctures are then performed at the distances of D1 through DN, respectively. For a more even distribution of the symbol punctures, each of the distances D1 through DN can be selected to be greater than or equal to a minimum puncture distance Dmin defined as Dmin=└S/P┘, where └┘ denotes a floor operator. The symbol punctures at each computed distance can be performed together or distributed with symbol punctures at other distances. In the alternative, an accumulator is configured to wrap around after it has been incremented to a value of S, each increment being of size P. A symbol index is incremented by one each time the accumulator is incremented by P, until the symbol index exceeds the value S. The process is advantageously begun with a puncture. Each time the accumulator wraps around, another puncture is performed. As another alternative, puncturing can be combined with symbol repetition.
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公开(公告)号：NO20016408L
公开(公告)日：2002-01-04
申请号：NO20016408
申请日：2001-12-28
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN A , RAZOUMOV LEONID
Abstract: The present invention is a novel and improved method and apparatus for control transmission energy. The present invention describes a closed loop power control system that operates in conjunction with a transmitter using orthogonal transmit diversity. In a first embodiment of the present invention, the receiver evaluates the signal to noise ratio (SNR) of the two components of the signal. A weighted sum of these two components emphasizing the weaker of the two signals is generated and used in the generation of the power control commands. In a second embodiment of the present invention, the SNR of the two component signals are calculated and two separate power control commands are generated based on a corresponding one of the calculated SNR values.
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公开(公告)号：NO20016408A
公开(公告)日：2002-01-04
申请号：NO20016408
申请日：2001-12-28
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN A , RAZOUMOV LEONID
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