公开(公告)号：DE69533224T2

公开(公告)日：2005-07-14

申请号：DE69533224

申请日：1995-07-05

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G

IPC: H04B20060101 ,  H04B7/005 ,  H04B7/26

Abstract: The power control process of the present invention enables a base station communicating over a forward packet channel to a mobile radio to control the power of the mobile radio transmitting over a reverse packet channel to the base station. The base station maintains a maximum energy per bit to total interference spectral density ratio threshold for the reverse channel as well as a desired threshold that results in a low frame error rate. By comparing each radiotelephone's estimated energy per bit to total interference spectral density ratio to the desired and maximum thresholds, power control commands to increase or decrease the radiotelephone's transmit power are generated depending on the outcome of the comparison.

公开(公告)号：DE69733019D1

公开(公告)日：2005-05-19

申请号：DE69733019

申请日：1997-05-28

Applicant: QUALCOMM INC

Inventor： ODENWALDER P ,  BUTLER K ,  TIEDEMANN G ,  ZEHAVI EPHRAIM

IPC: H04J3/12 ,  H04J3/16 ,  H04J13/00 ,  H04L1/00 ,  H04L1/08 ,  H04L1/12 ,  H04L1/18 ,  H04L25/02 ,  H04L25/05 ,  H04B1/707

Abstract: A novel and improved method and apparatus for generating a constant data rate channel supporting signaling data transmission in an adjustable rate wireless communication system is described. In accordance with one aspect of the invention the rate at which the channel operates may be adjusted based on the particular use and environmental conditions such that the appropriate data rate up to a maximum capability can be achieved. User data is then placed into frames based on the selected rate. When available, signaling data is added into each frames in a predetermined amount. The resulting frame is encoded, repeated and punctured based on the selected rate and whether signaling data has been introduced, and transmitted via RF signals to the receive system. Upon reception, the frame is processed in accordance with having only user data and with having signaling data. That is, the frame is processed both as if it had signaling data and as if no signaling data were present. Once the frame is processed, the particular processing that is more likely to be correct is determined via error checking. If the signaling data processed frame is more likely to have be correct, the signaling data is separated from the user data and each processed accordingly. If the non-signaling data processing is determined to be more likely to be correct, the frame is processed as if it were entirely comprised of user data.

公开(公告)号：DE69729296T2

公开(公告)日：2005-05-12

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：DE69914202T2

公开(公告)日：2004-11-04

申请号：DE69914202

申请日：1999-07-09

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G

IPC: H04B1/707 ,  H04B1/692 ,  H04B1/7087 ,  H04B1/713 ,  H04B1/7136 ,  H04B7/26 ,  H04Q7/38

Abstract: The present invention describes a spread spectrum communication system wherein the frequency of carriers and the code channels of the carriers or both for transmission to a given remote station user vary in time. This provides for a direct sequence spectrum communications system which changes frequency or code channel according to a predetermined pattern. The code channels and frequencies can be determined in accordance with a deterministic function or based upon a subset of the data to be transmitted. A receiver structure is also described for receiving the same.

公开(公告)号：DE69633005D1

公开(公告)日：2004-09-02

申请号：DE69633005

申请日：1996-03-29

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G ,  ODENWALDER P ,  WHEATLEY E ,  PADOVANI ROBERTO

IPC: H04B7/26 ,  H04B1/06 ,  H04B7/00 ,  H04B7/005 ,  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：DE69914202D1

公开(公告)日：2004-02-19

申请号：DE69914202

申请日：1999-07-09

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G

IPC: H04B1/707 ,  H04B1/692 ,  H04B1/7087 ,  H04B1/713 ,  H04B1/7136 ,  H04B7/26 ,  H04Q7/38

Abstract: The present invention describes a spread spectrum communication system wherein the frequency of carriers and the code channels of the carriers or both for transmission to a given remote station user vary in time. This provides for a direct sequence spectrum communications system which changes frequency or code channel according to a predetermined pattern. The code channels and frequencies can be determined in accordance with a deterministic function or based upon a subset of the data to be transmitted. A receiver structure is also described for receiving the same.

公开(公告)号：DE69605953T2

公开(公告)日：2000-08-17

申请号：DE69605953

申请日：1993-01-19

Applicant: QUALCOMM INC

Inventor： PADOVANI ROBERTO ,  TIEDEMANN G ,  WEAVER A ,  BUTLER K

IPC: C02F5/10 ,  H04L27/20 ,  C08L33/02 ,  C08L35/00 ,  C08L51/02 ,  C08L77/04 ,  C11D3/37 ,  H04B7/00 ,  H04J3/16 ,  H04J3/22 ,  H04J3/24 ,  H04J11/00 ,  H04J13/00 ,  H04J13/18 ,  H04L20060101 ,  H04L1/00 ,  H04L1/08 ,  H04L12/00 ,  H04L27/30 ,  H04L29/06 ,  H04Q7/38

Abstract: The invention relates to a communication system in which transmission takes place according to a format which permits different types of data to be combined and transmitted within a single transmission. The novel feature is that the communication system transmits variable length frames of data in packets, and that a data combining and transmission sub-system (14, 16, 18, 20) is provided so that when a frame of data does not require a complete packet for transmission, the data combining sub-system combines the frame of data with additional data to provide a complete packet. The data combining sub-system comprises input means for receiving the frame of data and the additional data and for combining the frame of data and the additional data to provide a complete packet responsive to a control signal, and control means for providing the control signal.

公开(公告)号：DE69516382D1

公开(公告)日：2000-05-25

申请号：DE69516382

申请日：1995-06-14

Applicant: QUALCOMM INC

Inventor： BLAKENEY D ,  TIEDEMANN G

IPC: H04J13/04 ,  H04B7/26 ,  H04B15/00 ,  H04L20060101 ,  H04L12/56 ,  H04W4/00 ,  H04W28/16 ,  H04W28/18 ,  H04W28/22 ,  H04W28/24 ,  H04W72/00 ,  H04Q7/24 ,  H04J13/00

Abstract: In a method for negotiating service configuration in a communication system having at least one dedicated channel which is not shared by communication devices in the communication system, a request message indicative of a proposed service configuration is generated in a service negotiator (20). The request message is multiplexed, in a multiplexer (22) coupled to the negotiator (20), with an information data signal to produce a multiplexed signal. The multiplexed signal is encoded in an encoder (24) interposed between the multiplexer (22) and a transmitter (26) in accordance with a service configuration selected by the service negotiator (20). The multiplexed and encoded signal is transmitted by the transmitter (26) over the dedicated channel. Received signals are decoded a decoder (16) interposed between a receiver (14) and a demultiplexer (18). A response message indicative of a response to the proposed service configuration is received by the receiver (14). A determination is made by the service negotiator (20) whether the response message is indicative of a mutually acceptable service configuration. The encoder (24) is directed by the service negotiator (20) to encode the information data signal in accordance with the proposed service configuration if the response message is indicative of an acceptable service configuration. The encoder (24) is directed by the service negotiator (20) to encode the information data signal with a universal default service configuration if the response message is not indicative of an acceptable service configuration.