公开(公告)号：NO20024910A

公开(公告)日：2002-12-05

申请号：NO20024910

申请日：2002-10-11

Applicant: QUALCOMM INC

Inventor： JALALI AHMAD ,  ESTEVES EDUARDO A S ,  SINDHUSHAYANA NAGABHUSHANA T ,  BLACK PETER J ,  ATTAR RASHID A

IPC: H04L1/16 ,  H04L1/18 ,  H04Q7/38 ,  H04L

CPC classification number: H04L1/1887 ,  H04L1/1692 ,  H04L1/1809 ,  H04L1/1848 ,  H04L1/1877 ,  H04L1/188

公开(公告)号：AU8903101A

公开(公告)日：2002-04-08

申请号：AU8903101

申请日：2001-09-14

Applicant: QUALCOMM INC

Inventor： VIJAYAN RAJIV ,  BLACK PETER J ,  ESTEVES EDUARDO A S

IPC: H04B7/005 ,  H04B7/26

Abstract: A method and apparatus that determines how much power to allocate to each of a plurality of reverse link power control (RLPC) Channels to be transmitted from a base station, based upon data rate control (DRC) messages transmitted to the base station. The DRC messages transmitted to the base station are used to determine the quality of the Forward Link over which the RLPC is to be transmitted. Even though the remote station to which the RLPC Channel is to be directed has not transmitted a DRC, the base station is capable of allocating power to the RLPC Channel based upon information provided to the base station in DRCs that were received by the base station. Accordingly, the base station can allocate power among the RLPC Channels without having received explicit information as to the quality of the Forward Link between the base station and every remote station intended to receive the information on the RLPC Channels.

公开(公告)号：AU7268101A

公开(公告)日：2001-11-07

申请号：AU7268101

申请日：2001-04-18

Applicant: QUALCOMM INC

Inventor： SINDHUSHAYANA NAGABHUSHANA T ,  ATTAR RASHID A ,  ESTEVES EDUARDO A S

IPC: H04J13/04 ,  H04L1/00

Abstract: A method and an apparatus for rate control in a high data rate (HDR) communication system are disclosed. An exemplary HDR communication system defines a set of data rates, at which an access point (AP) may send data packets to an access terminal (AT). The data rate is selected to maintain targeted packet error rate (PER). The AT's open loop algorithm measures received signal to interference and noise ratio (SINR) at regular intervals, and uses the information to predict an average SINR over the next packet duration. The AT's closed loop algorithm measures a packet error rate (PER) of the received signal, and uses the PER to calculate a closed loop correction factor. The loop correction factor is added to the SINR value predicted by the open loop, resulting in an adjusted SINR.

公开(公告)号：AU5351101A

公开(公告)日：2001-10-30

申请号：AU5351101

申请日：2001-04-13

Applicant: QUALCOMM INC

Inventor： ATTAR RASHID ,  PADOVANI ROBERTO ,  BLACK PETER J ,  SINDHUSHAYANA NAGABHUSHANA T ,  ESTEVES EDUARDO A S ,  GURELLI MEHMET

IPC: H04L1/00 ,  H04L1/08 ,  H04L1/16 ,  H04L1/18 ,  H04L29/08

Abstract: In a high data rate communication system, a method and apparatus for improved throughput while transmitting data packets within multiple time slots. In order to avoid unnecessary retransmissions of a packet, a subscriber station sends a Stop-Repeat signal to a base station, causing the base station to cease further transmissions of the packet. In order to enable successful decoding of a packet, a subscriber station sends a Continue-Repeat signal to a base station, causing the base station to send retransmissions of the packet during time slots beyond a predetermined default number of time slots.

公开(公告)号：AU4852300A

公开(公告)日：2000-12-05

申请号：AU4852300

申请日：2000-05-15

Applicant: QUALCOMM INC

Inventor： LING FUYUN ,  SINDHUSHAYANA NAGABHUSHANA T ,  ESTEVES EDUARDO A S

IPC: H04B1/7097 ,  H03M13/23 ,  H03M13/25 ,  H03M13/29 ,  H04L1/20 ,  H04L25/02

Abstract: An efficient telecommunications receiver system for accurately decoding a received composite signal having a data signal component and a pilot signal component includes a first circuit for receiving the composite signal and extracting a pilot signal and a data signal from received composite signal. A second circuit calculates a log-likelihood ratio as a function of a channel estimate based on the pilot signal. A third circuit scales the log-likelihood ratio by a predetermined log-likelihood ratio scaling factor and provides an accurate log-likelihood value in response thereto. A fourth circuit decodes the received composite signal based on the accurate log-likelihood value and the data signal. The third circuit includes a carrier signal-to-interference ratio circuit for computing a first signal-to-interference ratio and a second signal-to-interference ratio based partly on the pilot signal.

公开(公告)号：AU2506000A

公开(公告)日：2000-08-01

申请号：AU2506000

申请日：2000-01-14

Applicant: QUALCOMM INC

Inventor： ESTEVES EDUARDO A S ,  PANKAJ RAJESH K ,  BLACK PETER J ,  GROB MATTHEW S ,  SINDHUSHAYANA NAGABHUSHANA T

IPC: H04B7/26 ,  H04W36/18 ,  H04Q7/38

Abstract: A method and apparatus for controlling a data rate associated with the transmission of information from a base station (100) to a mobile station (300) in a mobile radio communication system. The mobile station (300) alternately receives information from a basestation (100) either in a variable rate mode or a fixed rate mode. The transmission rate from a base station (600) in the variable rate mode varies between successive data transmit intervals, and the transmission rate from a base station in the fixed rate mode remains fixed between successive data transmit intervals. Data is transmitted from a first base station (400) to the mobile station in the variable rate mode until the first base station is unable to receive the variable data rate control information from the mobile station. When the first base station (400) is unable to receive the variable data rate control information from the mobile station (300), the mobile station (300) attempts to remain in the variable rate mode by searching for a second base station that will support data transmissions to the mobile station (300) in the variable rate mode and, if the mobile station (300) is able to locate the second base station that will support data transmissions to the mobile station in the variable rate mode, then the second base station transmits data to the mobile station in the variable rate mode and transmissions from the first base station to the mobile station (300) in the variable rate mode terminate. If the mobile station is unable to locate the second base station that will support data transmissions to the mobile station in the variable rate mode, data is transmitted to the mobile station (300) from either the first base station (400) or a different base station in the fixed rate mode.

公开(公告)号：DK2256998T3

公开(公告)日：2013-05-06

申请号：DK10174191

申请日：2001-05-11

Applicant: QUALCOMM INC

Inventor： ESTEVES EDUARDO A S ,  ATTAR RASHID AHMED AKBAR ,  SINDHUSHAYANA NAGABHUSHANA T

IPC: H04W28/18 ,  H04L12/56

公开(公告)号：PT2249521E

公开(公告)日：2012-11-22

申请号：PT10174195

申请日：2001-05-11

Applicant: QUALCOMM INC

Inventor： ATTAR RASHID AHMED AKBAR ,  ESTEVES EDUARDO A S ,  HAYANA NAGABHUSHANA T

IPC: H04L12/56 ,  H04W28/18

公开(公告)号：PT1770924E

公开(公告)日：2012-06-18

申请号：PT06025215

申请日：2001-05-11

Applicant: QUALCOMM INC

Inventor： ESTEVES EDUARDO A S ,  ATTAR RASHID A ,  SINDHUSHAYANA NAGABHUSHANA T

IPC: H04L12/56 ,  H04W28/18

公开(公告)号：AT553572T

公开(公告)日：2012-04-15

申请号：AT06025215

申请日：2001-05-11

Applicant: QUALCOMM INC

Inventor： ESTEVES EDUARDO A S ,  ATTAR RASHID A ,  SINDHUSHAYANA NAGABHUSHANA T

IPC: H04L12/56 ,  H04W28/18

Abstract: In a high data rate communication system capable of variable rate transmission, an open loop rate control can be adjusted with a closed loop rate control to maximize throughput. An access point generates interleaved multi-slot packets that allow an access terminal to transmit indicator messages to the access point in accordance with recently received data carried within slots of the multi-slot packets.