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公开(公告)号：AU777635B2
公开(公告)日：2004-10-28
申请号：AU7755100
申请日：2000-10-07
Applicant: QUALCOMM INC
Inventor： RAZOUMOV LEONID , HOLTZMAN JACK , 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：NO20031827D0
公开(公告)日：2003-04-24
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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公开(公告)号：NO20031826D0
公开(公告)日：2003-04-24
申请号：NO20031826
申请日：2003-04-24
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN A , RAZOUMOV LEONID , BAO GANG , WEI YONGBIN
IPC: H04B7/26 , H04B7/005 , H04L12/56 , H04W28/22 , H04W52/16 , H04W52/26 , H04W52/28 , H04W52/32 , H04W52/34 , H04Q
Abstract: In a wireless communication system (50) a method for combination transmission of packet data and low delay data. In one embodiment a parallel signaling channel provides a message to receivers (56, 58, 60) indicating a target recipient of packet data. The message also identifies the transmission channel used for packet data transmissions. Each receiver may then selectively decode only packets where the message identifies the receiver as a target recipient. The data packets stored in a buffer are ignored if the target recipient is another mobile unit. In one embodiment, the message is sent concurrently with the data packet on a parallel channel. In one embodiment, the message is punctured into the high rate packet data transmission.
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公开(公告)号：HK1048208A1
公开(公告)日：2003-03-21
申请号：HK03100200
申请日：2003-01-08
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：BR0014586A
公开(公告)日：2002-12-17
申请号：BR0014586
申请日：2000-10-07
Applicant: QUALCOMM INC
Inventor： RAZOUMOV LEONID , HOLTZMAN JACK , 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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Patent Agency Ranking
公开(公告)号：CA2438440A1
公开(公告)日：2002-08-29
申请号：CA2438440
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 (3 2, 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 t he link. The periodic quality messages provide synchronization to the transmitt er and receiver (36, 38). A coding is applied to the feedback information identifying the transmitter. In one embodiment, a remote station includes a differential analyzer (212) to determine the change in successive channel quality measurements. In an alternate embodiment, link quality feedback information is gated according to channel condition.
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公开(公告)号：NO20070587A
公开(公告)日：2002-08-16
申请号：NO20070587
申请日：2007-01-31
Applicant: QUALCOMM INC
Inventor： RAZOUMOV LEONID , LUNDBY STEIN A
CPC classification number: H04W52/60 , H04B17/24 , H04W52/08 , H04W52/226 , H04W52/248 , H04W52/267
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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68.发明专利
公开(公告)号：CA2427007A1
公开(公告)日：2002-06-13
申请号：CA2427007
申请日：2001-10-24
Applicant: QUALCOMM INC
Inventor： WEI YONGBIN , BAO GANG , RAZOUMOV LEONID , LUNDBY STEIN A
IPC: H04B7/26 , H04B7/005 , H04L12/56 , H04W28/22 , H04W52/16 , H04W52/26 , H04W52/28 , H04W52/32 , H04W52/34
Abstract: In a wireless communication system (50) a method for combination transmissio n of packet data and low delay data. In one embodiment a parallel signaling channel provides a message to receivers (56, 58, 60) indicating a target recipient of packet data. The message also identifies the transmission chann el used for packet data transmissions. Each receiver may then selectively decod e only packets where the message identifies the receiver as a target recipient . The data packets stored in a buffer are ignored if the target recipient is another mobile unit. In one embodiment, the message is sent concurrently wit h the data packet on a parallel channel. In one embodiment, the message is punctured into the high rate packet data transmission.
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公开(公告)号：NO20021653A
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
CPC classification number: H04L1/1816 , H04L1/0026 , H04L1/1607 , H04L1/1825 , H04L1/1867 , H04W52/20 , H04W52/50
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公开(公告)号：NO20014846L
公开(公告)日：2001-12-05
申请号：NO20014846
申请日：2001-10-05
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN A , RAZOUMOV LEONID
Abstract: A method and apparatus for controlling transmit power levels of a plurality of different data streams (120, 120a, 122, 122a, 124, 124a) transmitted from at least one base station to a mobile station in a mobile radio communication system. The first and second data streams are trasmitted from the base station and received at the mobile station. A stream of power control commands is formed at the mobile station in accordance with either the first or second received data stream. A power control signal is formed at the mobile station from the first stream of power control commands and transmitted to the base station. A received stream of power control commands is formed from the received power control signal at the base station, and the transmit power levels of the first and second data streams from the base station are controlled in accordance with the received stream of power control commands.
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