公开(公告)号：DE60027708T2

公开(公告)日：2007-04-05

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.

公开(公告)号：DE69837044D1

公开(公告)日：2007-03-22

申请号：DE69837044

申请日：1998-09-08

Applicant: QUALCOMM INC

Inventor： LUNDBY A ,  ODENWALDER P ,  TIEDEMANN G

IPC: H04J11/00 ,  H04B1/707 ,  H04B7/26 ,  H04J13/00 ,  H04J13/10 ,  H04W16/00 ,  H04W16/24 ,  H04W16/32 ,  H04W48/08 ,  H04W48/16

Abstract: A method and apparatus for providing orthogonal spot beams (14a, 14b), sectors (16a, 16b), and picocells (18). The transmissions can be made orthogonal by using orthogonal auxiliary pilots and different Walsh traffic channels in adjacent areas. In accordance with the IS-95 standard, the pilot signal is covered with the 64-chip Walsh sequence zero. The 64-chip all zeros Walsh sequence can be designated as P and the 64-chip all one sequence can be designated as M. In the present invention, additional pilot signals can be provided by concatenating 64-chip all zeros P and all ones M sequences. Thus, for two pilot signals, pilot Walsh sequences of PP and PM can be used. For four pilot signals, pilot Walsh sequences of PPPP, PMPM, PPMM, and PMMP can be used. The present invention can be extended such that any required number of pilot Walsh sequences can be generated by substituting each bit in an K-bit Walsh sequence with the 64-chip all zeros P or all ones M sequence depending on the value of that bit.

公开(公告)号：DE69934598D1

公开(公告)日：2007-02-08

申请号：DE69934598

申请日：1999-10-12

Applicant: QUALCOMM INC

Inventor： BUTLER K ,  ZHANG HAITAO ,  TIEDEMANN G

IPC: H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/7097 ,  H04W24/00 ,  H04W68/00 ,  H04W68/02 ,  H04W72/02

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：DE69833198T2

公开(公告)日：2006-09-21

申请号：DE69833198

申请日：1998-06-16

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G ,  REZAIIFAR RAMIN ,  GLAUSER OLIVIER ,  CHEN TAO

IPC: H04J13/10 ,  H04B1/707 ,  H04J11/00 ,  H04J13/00 ,  H04L27/18 ,  H04L27/26

Abstract: A method for generating a higher rate channel using a set of N lower rate channels, the method comprises generating a set of N sinusoids having a corresponding set of N phase offsets with predetermined phase rotations; upconverting said set of N lower rate channels using said set of N sinusoids and phase offsets yielding a set of upconverted signals; summing said set of upconverted signals yielding a summed signal whereby the peak-to-average amplitude of said summed signal is reduced based on said phase rotations; and transmitting said summed signal. A corresponding system is also disclosed.

公开(公告)号：DE69835447D1

公开(公告)日：2006-09-14

申请号：DE69835447

申请日：1998-11-12

Applicant: QUALCOMM INC

Inventor： CHEN TAO ,  ODENWALDER P ,  TIEDEMANN G ,  WILLENEGGER SERGE

IPC: H04L1/18 ,  H04L1/00 ,  H04L1/08

Abstract: An efficient retransmission of data using symbol accumulation wherein the packet received in error is retransmitted at a lower energy-per-bit level concurrently in the same frame with the new packet. The destination device receives the data transmission and retransmission, demodulate the signal, and separates the received data into the new and retransmitted packet. The destination device then accumulates the energy of the retransmitted packet with the energy already accumulated for the packet received in error and decodes the accumulated packet. The accumulation of the additional energy provided by the subsequent retransmissions improves the probability of a correct decoding. The throughput rate can be improved since the packet received in error is retransmitted concurrently with the transmission of the new data packet. The capacity is maximized since the retransmission of the packet received in error is at a lower energy level than that of the new packet.

公开(公告)号：DE69832805T2

公开(公告)日：2006-08-10

申请号：DE69832805

申请日：1998-09-16

Applicant: QUALCOMM INC

Inventor： REZAIIFAR RAMIN ,  JOU YU-CHEUN ,  TIEDEMANN G

IPC: E06C1/32 ,  E06C7/08 ,  E06C7/46 ,  E06C7/48 ,  H04B7/185 ,  H04B7/26 ,  H04J1/00 ,  H04W36/18 ,  H04W48/12 ,  H04W52/02 ,  H04W72/04 ,  H04W72/12 ,  H04W76/04

Abstract: In a channel structure for use in communication systems, two sets of physical channels, one for the forward link (50) and another for the reverse link (52), are utilized to facilitate communication of a variety of logical channels. The physical channels comprise data and control channels. In the exemplary embodiment, the data channels comprise fundamental channels which are used to transmit voice traffic, data traffic, high speed data, and other overhead information and supplemental channels which are used to transmit high speed data. The fundamental channels can be released when the remote stations are idle to more fully utilize the available capacity. The control channels are used to transmit paging and control messages and scheduling information.

公开(公告)号：DE69833198D1

公开(公告)日：2006-04-06

申请号：DE69833198

申请日：1998-06-16

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G ,  REZAIIFAR RAMIN ,  GLAUSER OLIVIER ,  CHEN TAO

IPC: H04B1/707 ,  H04J13/10 ,  H04J11/00 ,  H04J13/00 ,  H04L27/18 ,  H04L27/26

Abstract: A method for generating a higher rate channel using a set of N lower rate channels, the method comprises generating a set of N sinusoids having a corresponding set of N phase offsets with predetermined phase rotations; upconverting said set of N lower rate channels using said set of N sinusoids and phase offsets yielding a set of upconverted signals; summing said set of upconverted signals yielding a summed signal whereby the peak-to-average amplitude of said summed signal is reduced based on said phase rotations; and transmitting said summed signal. A corresponding system is also disclosed.

公开(公告)号：DE69333883D1

公开(公告)日：2006-02-23

申请号：DE69333883

申请日：1993-03-04

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G ,  WEAVER A ,  PADOVANI ROBERTO

IPC: H04B1/707 ,  H04B1/7103 ,  H04B7/26 ,  H04J13/00 ,  H04J13/10 ,  H04J13/16 ,  H04L1/16 ,  H04L12/28 ,  H04L12/403 ,  H04L12/413 ,  H04L27/30 ,  H04W28/04 ,  H04W52/48 ,  H04W52/50 ,  H04W74/00 ,  H04W74/08

Abstract: Collisions between messages simultaneously transmitted by multiple spread spectrum transmitters are reduced by distributing the transmissions over the available resources of the receiver. Each mobile station uses one or more randomization methods to distribute its transmissions. Each mobile station includes a microprocessor (100); an encoder (140); a timing generator (136); a PN long code sequence generator (146); and XOR gate (152). The system is used in a CDMA mobile telephone system.

公开(公告)号：DE69533665T2

公开(公告)日：2006-02-16

申请号：DE69533665

申请日：1995-07-05

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G ,  GILHOUSEN S ,  ODENWALDER P ,  ZEHAVI EPHRAIM ,  LEVIN A ,  WHEATLEY E

IPC: H04B7/00 ,  H04B7/005 ,  H04B7/26 ,  H04L1/00 ,  H04L1/08 ,  H04L1/12

Abstract: A method and apparatus for controlling transmission power in a variable rate communication system is disclosed. The method disclosed provides for a closed loop power control method. A first remote station controls the transmission power of a second remote station by transmitting a rate dependent power control signal to the second remote communication station. Since only the second communication knows its transmission rate a priori, it must determine its course of action in accordance with both the received power control signal and the knowledge of its transmission rate.

公开(公告)号：DE60019137T2

公开(公告)日：2006-02-09

申请号：DE60019137

申请日：2000-08-11

Applicant: QUALCOMM INC

Inventor： SARKAR SANDIP ,  TIEDEMANN G ,  ODENWALDER P

IPC: H04B7/005 ,  H04B7/26 ,  H04W24/00 ,  H04W36/00 ,  H04W36/14 ,  H04W52/08 ,  H04W52/12 ,  H04W52/22 ,  H04W52/24 ,  H04W52/28 ,  H04W52/40 ,  H04W52/48 ,  H04W72/06

Abstract: The structure of a time-multiplexed physical channel is used to time inter-frequency or inter-system search excursions. A mobile station that receives an instruction to perform a search excursion prepares for the search excursion by detecting the first radio frame of a message frame. Transport format combination indicator bits are extracted from the first radio frame and stored. After the search excursion is performed, the mobile station recalls the stored indicator bits and uses the indicator bits to decode other radio frames of the message frame.