公开(公告)号：AT430411T

公开(公告)日：2009-05-15

申请号：AT06024896

申请日：1997-05-28

Applicant: QUALCOMM INC

Inventor： ODENWALDER JOSPEH P ,  JOU YU-CHEN ,  TIEDEMANN EDWARD G

IPC: H04B1/707 ,  H04B7/24 ,  H04B7/26 ,  H04J13/00 ,  H04J13/18 ,  H04L1/00

Abstract: A method for demodulating a received signal comprising complex multiplying (202,204) the received signal by a complex pseudonoise code to produce a complex pseudonoise despread signal (XI,XQ); filtering (214) the complex pseudonoise despread signal to provide a complex filtered pilot signal; multiplying (210) the complex pseudo-noise despread signal by a first demodulation code to provide a first complex demodulated data signal; and phase rotating and scaling (216,218) the first complex demodulated clara signal in accordance with the complex-filtered pilot signal to provide a first soft decision data.

公开(公告)号：AT406708T

公开(公告)日：2008-09-15

申请号：AT03017698

申请日：1996-03-29

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWARD G ,  ODENWALDER JOSEPH P ,  WHEATLEY CHARLES E ,  PADOVANI ROBERTO

IPC: H04B7/005 ,  H04B7/26 ,  H04B1/06 ,  H04B7/00 ,  H04B17/00 ,  H04W52/08 ,  H04W52/22 ,  H04W52/24 ,  H04W52/28 ,  H04W52/36 ,  H04W52/60 ,  H05K11/02

Abstract: A method and apparatus for controlling transmission power in a mobile communication system is disclosed. The method disclosed provides for a closed-loop power control method. A characteristic of a propagation path between a first communication station and a second communication station is determined and a power control step size selected accordingly. Closed loop power control commands are received at the first communication station and its transmission energy is adjusted in accordance with the closed loop power control commands and the power control step size.

公开(公告)号：DE69936536T2

公开(公告)日：2008-03-20

申请号：DE69936536

申请日：1999-12-03

Applicant: QUALCOMM INC

Inventor： WALLACE MARK S ,  TIEDEMANN EDWARD G ,  WHEATLEY CHARLES E ,  WALTSON J ROD

IPC: H04B7/26 ,  H04B7/24 ,  H04L7/00 ,  H04L7/08 ,  H04Q7/36

公开(公告)号：DE69838767D1

公开(公告)日：2008-01-03

申请号：DE69838767

申请日：1998-02-10

Applicant: QUALCOMM INC

Inventor： JOU YU-CHEN ,  LIN YU-CHUAN ,  ODENWALDER JOSEPH P ,  TIEDEMANN EDWARD G

IPC: H04L29/06 ,  H04B7/005 ,  H04B7/26 ,  H04L29/08 ,  H04W28/18 ,  H04W28/20 ,  H04W28/22 ,  H04W52/28 ,  H04W52/34 ,  H04W72/04 ,  H04W72/12

Abstract: In a communication system capable of variable rate transmission, scheduling of high speed data transmission improves utilization of the forward link and decreases the transmission delay in data communication. Each remote station is assigned one primary code channel for the duration of the communication with a cell. Secondary code channels of various types and transmission capabilities can be assigned by a channel scheduler for scheduled transmission of data traffic at high rates. Secondary code channels are assigned in accordance with a set of system goals, a list of parameters, and collected information on the status of the communication network. Secondary code channels can be grouped into sets of secondary code channels. Data is partitioned in data frames and transmitted over the primary and secondary code channels which have been assigned to the scheduled user.

公开(公告)号：DE69738311D1

公开(公告)日：2008-01-03

申请号：DE69738311

申请日：1997-03-11

Applicant: QUALCOMM INC

Inventor： ZIV NOAM A ,  TIEDEMANN EDWARD G

IPC: H04B7/005 ,  H04B7/26 ,  H04W36/18 ,  H04W52/14 ,  H04W52/16 ,  H04W52/34 ,  H04W52/40

Abstract: In a communications system including a set of base stations (14, 16, 18, 20) in communication with a remote unit (10), a technique is provided for centrally controlling transmission power. In accordance with this technique, a reverse link frame of data is first received from the remote unit (10) at each of the set of base stations (14, 16, 18, 20). The base stations (14, 16, 18, 20) determine a frame quality indication corresponding to the received reverse link frame of data and transmit the frame quality indication to a system controller (22, 24). The system controller (22, 24) then calculates, based on the frame quality indication from each of the set of base stations (14, 16, 18, 20), an aggregated frame quality indication corresponding to the received reverse link frame of data, and based on the aggregated frame quality indication calculates an absolute reverse threshold value. The absolute reverse threshold value is then provided to each of the set of base stations (14, 16, 18, 20), and each of the set of base stations (14, 16, 18, 20) provides a power control command for the remote unit (10) based on a comparison between the frame quality indication determined at the base station and the absolute reverse threshold value.

公开(公告)号：DE69535410T2

公开(公告)日：2007-12-06

申请号：DE69535410

申请日：1995-11-29

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWARD G ,  JOU YU-CHEUN ,  WEAVER LINDSAY A ,  BAYLEY GWAIN

IPC: H04L1/00 ,  H04L1/24 ,  H04B3/46 ,  H04B7/26 ,  H04B17/00 ,  H04L1/12 ,  H04L1/20 ,  H04L27/00 ,  H04L69/40

Abstract: The invention provides a system and method for testing signal transmission quality within a digital communication system and may be incorporated within a digital cellular communication system in which information is exchanged over spread spectrum communication channels. A test sequence of digital data transmitted over the communication channel is received at a receiving station, within which is also generated a replica of the test sequence of digital data. The accuracy of transmission over the communication channel is then determined by comparing the replica of the test sequence of digital data to the test sequence of data received over the communication channel. The invention allows the test sequence of digital data to be transmitted at one of a set of known data rates, with the received station being disposed to identify the data rate associated with each test sequence of digital data. In order to simulate the transmission of, for example, voice data, the system may be configured such that each test sequence of digital data is generated in accordance with a pseudorandom process.

公开(公告)号：DE60036878D1

公开(公告)日：2007-12-06

申请号：DE60036878

申请日：2000-09-29

Applicant: QUALCOMM INC

Inventor： REZAIIFAR RAMIN ,  QUICK ROY F ,  WILLIAMSON PAUL ,  WANG JUN ,  TIEDEMANN EDWARD G

IPC: H04L9/08 ,  H04L9/18 ,  G06F1/04 ,  G06F1/06 ,  G06F1/08 ,  G06F1/12 ,  G06F13/42 ,  G06F21/00 ,  H04K1/00 ,  H04L1/00 ,  H04L5/00 ,  H04L7/00 ,  H04L9/00 ,  H04L9/12 ,  H04L9/32 ,  H04L12/22 ,  H04L29/06 ,  H04Q7/38 ,  H04W12/00 ,  H04W12/02 ,  H04W12/06 ,  H04W12/10 ,  H04W12/12

Abstract: Method and apparatus for encrypting transmission traffic at separate protocol layers L1, L2, and L3 so that separate encryption elements can be assigned to separate types of transmission traffic, which allows the implementation of different levels of encryption according to service requirements. Encryption elements use variable value inputs, called crypto-syncs, along with semi-permanent encryption keys to protect from replay attacks from rogue mobile stations. Since crypto-sync values vary, a method for synchronizing crypto-syncs at the mobile station and base station is also presented.

公开(公告)号：DE60031130T2

公开(公告)日：2007-08-23

申请号：DE60031130

申请日：2000-08-11

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWARD G ,  SINNARAJAH RAGULAN

IPC: H04J13/04 ,  H04W28/18

公开(公告)号：DE69837837D1

公开(公告)日：2007-07-12

申请号：DE69837837

申请日：1998-01-27

Applicant: QUALCOMM INC

Inventor： WILLENEGGER SERGE ,  TIEDEMANN EDWARD G ,  JOU YU-CHEUN ,  ODENWALDER JOSEPH P

IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/14 ,  H04W52/16 ,  H04W52/20 ,  H04W52/32

Abstract: A novel and improved method for performing transmit power control is described. A signal is transmitted at a transmit power and includes a traffic channel transmitted at a traffic channel transmit power, and a pilot channel transmitting at a pilot channel transmit power. The receive energy of the pilot channel is measured, and compared with a threshold. A power control command is generated and transmitted to the system generating the signal. This determines whether the command is to be applied to either the traffic channel, the pilot channel, or the entire signal. The power of the determined channel(s) is adjusted accordingly.

公开(公告)号：DE69837325D1

公开(公告)日：2007-04-26

申请号：DE69837325

申请日：1998-04-16

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWARD G ,  SAINTS KEITH W

IPC: H04B7/005 ,  C08L23/04 ,  C08L23/06 ,  C08L23/08 ,  C08L23/10 ,  C08L23/12 ,  C08L23/16 ,  H04B1/04 ,  H04B7/26 ,  H04W52/08 ,  H04W52/24 ,  H04W52/40

Abstract: A forward link power control mechanism in a remote station (6) measures reverse link power control bits which are transmitted by one or more base stations (4a, 4b, 4n) on a forward traffic channel (10a). At the remote station (6) the reverse link power control bits from multiple base stations (4a, 4b, 4n) or multiple signal paths are measured, combined, and filtered to yield an improved measurement of the forward link signal quality. The reverse link (12a, 12b) power control bits which are deemed unreliable are omitted from use in the power control loop. The remote station (6) generates a set of forward link power control bits in accordance with the measurements and transmits these bits to all base stations (4a, 4b, 4n) in communication with the remote station (6). Each base station (4a, 4b, 4n) adjusts its gain of the forward traffic channel (10a) in accordance to its measurement of the forward link power control bit. The gains of the forward traffic channels (10a) of the base stations (4a, 4b, 4n) are corrected periodically so that erroneous reception of the forward link power control bits by the base stations do not accumulate.