公开(公告)号：DE60019137T3

公开(公告)日：2011-06-01

申请号：DE60019137

申请日：2000-08-11

Applicant: QUALCOMM INC

Inventor： SARKAR SANDIP ,  TIEDEMANN G ,  ODENWALDER P

IPC: H04W4/00 ,  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

公开(公告)号：DE69837044T2

公开(公告)日：2007-11-22

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：DE69836097T2

公开(公告)日：2007-05-16

申请号：DE69836097

申请日：1998-11-30

Applicant: QUALCOMM INC

Inventor： ODENWALDER P ,  LUNDBY A ,  WHEATLEY E ,  TIEDEMANN G

IPC: H04B7/06 ,  H04L1/00 ,  H04L1/06

Abstract: A method and apparatus for providing diversity transmissions to a mobile unit from a transmitting station having at least first and second antennas by repeatedly switching between the two antennas during the transmission of information to the receiving unit. Message information is transmitted from the first antenna in the transmitting station to the receiving unit. After the start of the transmission of the message information from the first antenna, transmission of the message information from the first antenna to the receiving unit terminates and transmission of the message information from the second antenna in the transmitting station to the receiving unit is initiated. Some time after transmission of the message information from second antenna is initiated, the transmission of the message information from the second antenna to the receiving unit terminates and transmission of the message information from the first antenna in the transmitting station to the receiving unit is initiated. Repeated switching between the first and second antennas is achieved by repeating the process. The switching results in diversity transmissions that improve the ability of a receiving unit to receive the coded and interleaved transmitted message information from the transmitting station. The interleaver disperses the encoded symbols in each antenna dwell period such that the decoder decisions are based on a mix of symbols form each antenna. Therefore the decoder decisions are unreliable only when the mix of symbols from the different antennas, with different fading characteristics, are unreliable over the span of symbols the decoder uses in its decision process.

公开(公告)号：DE60029485T2

公开(公告)日：2007-02-22

申请号：DE60029485

申请日：2000-05-17

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G ,  JOU YU-CHEUN ,  LIN YU-CHUAN

IPC: H04L29/08 ,  H04L12/70 ,  H04W28/18 ,  H04W28/22 ,  H04W72/04

公开(公告)号：DE69835447T2

公开(公告)日：2007-02-15

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：DE69934496D1

公开(公告)日：2007-02-01

申请号：DE69934496

申请日：1999-07-27

Applicant: QUALCOMM INC

Inventor： WHEATLEY E ,  TIEDEMANN G ,  ODENWALDER P ,  KRISHNAMURTHI RAJEEV

IPC: H04L12/28 ,  H04B7/26 ,  H04W16/16

Abstract: A method and system for operation of a personal base station where the forward link of a personal base station is on the same frequency assignment as a first forward link data signal transmitted by a macro base station belonging to a cellular communication system. A first subscriber station communicates with the macro base station. The personal base station generates a second forward link data signal and communicates with a second subscriber station. The personal base station receives the first forward link data signal and combines it with its own second forward link data signal to form a combined forward link data signal. The personal base station then transmits the combined forward link data signal. The first subscriber station is able to receive and diversity combine the combined forward link data signal, improving the signal to noise ratio that would otherwise occur in the vicinity of the personal base station.

公开(公告)号：DE69833669T2

公开(公告)日：2006-11-16

申请号：DE69833669

申请日：1998-09-08

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G

IPC: H04B7/26 ,  H04B7/005 ,  H04W36/18 ,  H04W52/40

Abstract: A system and method for adjusting forward traffic channel power allocation in a communications system, wherein signal qualities of pilot channels respectively transmitted by multiple base stations in an active set of a mobile station, are measured by the mobile station, compared to a signal quality standard, and the comparison results reported to a system controller, thereby to indicate which of the pilots at the mobile station surpass the standard. The system controller then adjusts the forward channel power allocation based on the comparison results.

公开(公告)号：DE69636500D1

公开(公告)日：2006-10-12

申请号：DE69636500

申请日：1996-10-10

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G ,  KHAN IRFAN ,  HOLCMAN RAUL

IPC: H04H20/00 ,  H04M11/00 ,  H04W8/26

Abstract: A communications network and method for over the air service programming a mobile station (2), where the mobile station transmits a service programming request to a communications network, which results in the mobile station (2) being connected to a customer service center (26). Customer service center (26) queries the user of mobile station (2) for information in response to which the customer service center (26) selects a home location register (18) and authentication center (22) within the communication network with which the mobile station (2) is to be associated. Service programming information associated with the mobile station (2) is transferred from the home location register (18) and/or the authentication center (22) into mobile station (2).

公开(公告)号：DE69333883T2

公开(公告)日：2006-07-27

申请号：DE69333883

申请日：1993-03-04

Applicant: QUALCOMM INC

Inventor： TIEDEMANN G ,  WEAVER A ,  PADOVANI ROBERTO

IPC: H04L27/30 ,  H04B1/707 ,  H04B1/7103 ,  H04B7/26 ,  H04J13/00 ,  H04J13/10 ,  H04J13/16 ,  H04L1/16 ,  H04L12/28 ,  H04L12/403 ,  H04L12/413 ,  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：DE69931627D1

公开(公告)日：2006-07-06

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.