公开(公告)号：DE69733254D1

公开(公告)日：2005-06-16

申请号：DE69733254

申请日：1997-06-06

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G

IPC: H04B7/26 ,  H04W36/18 ,  H04W48/10 ,  H04W48/20 ,  H04Q7/38 ,  H04Q7/36

Abstract: A method and apparatus which permits handoffs while the mobile station is in the system access state. This is achieved by providing for channel assignment messages to be sent over the paging channel of a plurality of base stations, which increases the probability of one of the messages getting through. In addition, this assures the mobile station will be able handoff to a different base station and have a traffic channel allocated to it on the new base station without delay. In addition, a method and apparatus which permits the mobile station to be directly assigned into a soft handoff state upon traffic channel assignment.

公开(公告)号：DE69631965T2

公开(公告)日：2005-04-07

申请号：DE69631965

申请日：1996-11-07

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G ,  CHEN TAO

IPC: H04B7/26 ,  H04B7/005 ,  H04W52/08 ,  H04W52/22 ,  H04W52/24 ,  H04W52/26 ,  H04W52/28 ,  H04W52/36

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 for variable rate transmissions. The power of transmissions is varied in accordance with the rate of the frames of data being transmitted. The transmission power between the rates can be a fixed or variable difference.

公开(公告)号：DE69333633D1

公开(公告)日：2004-10-28

申请号：DE69333633

申请日：1993-03-04

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G ,  WEAVER A ,  KERR J ,  GEIB M

IPC: H04J3/16 ,  H04B1/16 ,  H04B7/26 ,  H04W24/00 ,  H04W48/08 ,  H04W52/02 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/04

Abstract: A system for reducing receiver power consumption in communication system having a transmitter and one or more receivers schedules periodic messages in "slots." Each receiver is assigned a slot during which it monitors the transmissions. The transmitter transmits messages to the receiver only during the assigned slots. The receiver is in an "active state" during its assigned slot. It may remain in the active state after its assigned slot if the message requires the receiver to perform additional actions. During the "inactive state," which is the time period between successive occurrences of its assigned slot, the receiver may perform any action not requiring coordination with the transmitter. It may conserve power during this time by removing power from one or more components such as those used for monitoring the transmissions. At a time during the inactive state shortly before the assigned slot, the receiver applies power to these components and performs initializations. Such initializations may include reacquiring a pilot channel signal to which the receiver may synchronize itself if its timing signals have drifted out of synchronization with those of the transmitter during the preceding inactive state.

公开(公告)号：DE69729296D1

公开(公告)日：2004-07-01

申请号：DE69729296

申请日：1997-05-28

Applicant: QUALCOMM INC

Inventor： ODENWALDER P ,  JOU YU-CHEN ,  TIEDEMANN 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：DE69931627T2

公开(公告)日：2007-04-26

申请号：DE69931627

申请日：1999-04-30

Applicant: QUALCOMM INC

Inventor： CHEN TAO ,  TIEDEMANN G ,  SAINTS W ,  GLAUSER OLIVIER

IPC: H04L12/00 ,  H04W36/14 ,  H04W36/38

Abstract: A method and apparatus for coordinating the time at which a mobile station (5) performs searches for alternative systems to which a hard handoff will occur. In one system which includes the present invention, the mobile station (5) receives a command which instructs the mobile station (5) as to when to tune to alternative frequencies in order to search for indications of the presence of an alternative system. In another system which includes the present invention, predetermined times are defined with respect to a reference point in time that is common to both an origination base station (10) and a mobile station (5). The mobile station (5) tunes to alternative frequencies to perform searches only during these predetermined times. In addition, the mobile station (5) coordinates the transmission of reports which indicate the results of searches for alternative systems such that these reports are only transmitted from the mobile station (5) when the mobile station (5) is tuned to the origination frequency.

公开(公告)号：DE60123272T2

公开(公告)日：2007-04-05

申请号：DE60123272

申请日：2001-11-29

Applicant: QUALCOMM INC

Inventor： RAZOUMOV LEONID ,  LUNDBY A ,  HOLTZMAN M ,  TIEDEMANN G ,  ODENWALDER P

IPC: H04L1/00 ,  H04B1/7103 ,  H04B7/005 ,  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).

公开(公告)号：DE69934706D1

公开(公告)日：2007-02-15

申请号：DE69934706

申请日：1999-10-12

Applicant: QUALCOMM INC

Inventor： BUTLER K ,  ZHANG HAITAO ,  TIEDEMANN G ,  ZOU QIUZHEN ,  SIH C ,  AGRAWAL AVNEESH

IPC: H04W24/02 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/7115 ,  H04W52/02

Abstract: A novel and improved method for performing paging is described. In one embodiment of the invention a searcher is used to detect spread spectrum signals. Samples received RF signals are stored in a sample buffer. During standby mode, the samples are gathered during paging slots assigned to the mobile. A set of searches are performed on the samples, and if pilot signals are detected additional demodulation is performed to detect paging messages. The resulting set of demodulation data may be combined to increase detection. After a page message has been detected, additional demodulation resources may be activated to processes more complete page messages, or other information channels. In one embodiment of the invention, the searcher includes a demodulator to perform quick page detection without the use of finger elements to reduce idle mode power consumption.

公开(公告)号：DE60208681T2

公开(公告)日：2006-08-24

申请号：DE60208681

申请日：2002-07-02

Applicant: QUALCOMM INC

Inventor： CHEN TAO ,  LEUNG K ,  TIEDEMANN G

IPC: H04L1/16 ,  H04L1/00 ,  H04L1/18

Abstract: An apparatus for providing frame re-transmission in a broadcast communication system. Frame re-transmission is accomplished only when a predetermined number of negative acknowledgement messages are received with respect to one or more data frames. The predetermined number may vary in accordance with various operating parameters, such as the latency of the transmission and/or the number of wireless communication devices currently receiving a broadcast transmission.

公开(公告)号：DE60211729D1

公开(公告)日：2006-06-29

申请号：DE60211729

申请日：2002-02-14

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G ,  CHEN TAO ,  JAIN AVINASH

IPC: H04B7/005 ,  H04B7/00 ,  H04B7/26 ,  H04L1/12 ,  H04L1/18 ,  H04L12/403 ,  H04L12/56 ,  H04W28/04 ,  H04W48/08 ,  H04W52/06 ,  H04W52/14 ,  H04W52/16 ,  H04W52/36 ,  H04W52/54 ,  H04W72/04

Abstract: Method and apparatus for generating a reverse supplemental channel to a remote terminal, the method comprising transmitting a Reverse Supplemented Channel Assignment Mini Message to the remote terminal on a Forward Dedicated Packet Control Channel. The Mini Message may comprise layer 2 or layer 3 fields.

公开(公告)号：DE60027708D1

公开(公告)日：2006-06-08

申请号：DE60027708

申请日：2000-03-06

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G ,  LUNDBY A

IPC: H04B7/26 ,  H04B7/005 ,  H04L1/08 ,  H04W24/00 ,  H04W52/48 ,  H04W52/50

Abstract: A method and apparatus for maximizing the use of available capacity in a communication system having a base station and a plurality of mobile stations. The forward link includes a plurality of traffic streams sent on at least one channel from the base station to the mobile stations. The forward link is subject to a maximum power ceiling. A first output power level associated with simultaneously transmitting a first set of one or more traffic streams on the forward link is initially determined. Next, the first output power level is compared to the maximum power ceiling; and at least one time frame in the forward link having available capacity for transmitting a portion of at least one further traffic stream is identified. The first set of traffic streams and the portion of the at least one further traffic stream are then transmitted simultaneously during the at least one frame on the forward link.