公开(公告)号：EP0846379A1

公开(公告)日：1998-06-10

申请号：EP96931407.0

申请日：1996-08-23

Applicant: QUALCOMM INCORPORATED

Inventor： PADOVANI, Roberto ,  MEAGHER, Bruce, R. ,  ZIV, Noam, A.

IPC: H03M13 ,  H04J13 ,  H04L1

CPC classification number: H04L1/0057

Abstract: A novel and improved system and method for assembling a single data stream from multiple instances of that data stream is described. Data transmitted from a cellular telephone subscriber unit (100) is received by a set of base transceiver stations (102). Each base transceiver station performs various error detection procedures on segments of the data referred to as frames (300). These error detection procedures may include CRC check sum verification, Yamamoto metric calculation, re-encoded signal error rate calculation, or a combination thereof. The results of these error detection procedures are placed into a frame quality metric (308). The frame (200), frame quality metric (308), a time stamp (310) and an address (312) are placed into a packet (305) that is transmitted from each base transceiver station to a mobile telephone switching office (104) which matches packets (305) attempting to transmit the same information using the time stamp and selects one frame (300) from the packets (305) for further processing based on the associated frame quality metric (308).

公开(公告)号：EP0835560A1

公开(公告)日：1998-04-15

申请号：EP96923315.0

申请日：1996-06-17

Applicant: QUALCOMM INCORPORATED

Inventor： ZIV, Noam, Abraham ,  PADOVANI, Roberto

IPC: H04J13 ,  H04B7 ,  H04B17 ,  H04L1

CPC classification number: H04W52/24 ,  H04B17/318 ,  H04L1/0059 ,  H04L1/0071

Abstract: A method and apparatus of determining signal strength, regardless of the signal data rate, in a receiver receiving signals from a variable rate transmitter. The incoming signal is comprised of a series of frames. Each frame is comprised of a number of power control groups containing data. The number of the power control groups containing data within each frame is dependent on the unknown data rate. The position of the power control groups within the frame is a pseudorandom. The signal strength of an incoming signal of unknown data rate is determined based upon an active set of power control groups within a frame. The active set of power control groups contain data independently of the unknown data rate. The signal strength information may be used to indicate that the signal strength is sufficient to perform further signal processing.

公开(公告)号：EP0818084A1

公开(公告)日：1998-01-14

申请号：EP96910643.0

申请日：1996-03-29

Applicant: QUALCOMM INCORPORATED

Inventor： TIEDEMANN, Edward, G., Jr. ,  ODENWALDER, Joseph, P. ,  WHEATLEY, Charles, E., III ,  PADOVANI, Roberto

IPC: H04B7 ,  H04B1 ,  H04B17 ,  H04W52 ,  H05K11

CPC classification number: H04W52/362 ,  H04W52/08 ,  H04W52/20 ,  H04W52/228 ,  H04W52/247 ,  H04W52/28 ,  H04W52/282 ,  H04W52/283 ,  H04W52/367 ,  H04W52/50 ,  H04W52/60

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 mobile station (30) provides information on the quality of the signal received from the base station (50), and the base station (50) responds by adjusting the power allocated to that user in a shared base station signal. The transmission power is adjusted initially by a large increment and then ramped down at an increasingly decreasing rate. The mobile station (30) also provides information to the base station (50) as to its relative velocity and the base station (50) adjusts its transmission power in accordance with this velocity information.

公开(公告)号：EP0705512B1

公开(公告)日：1997-10-01

申请号：EP94920280.8

申请日：1994-06-20

Applicant: QUALCOMM INCORPORATED

Inventor： BUTLER, Brian K. ,  PADOVANI, Roberto ,  ZEHAVI, Ephraim

IPC: H04L25/02

CPC classification number: H04L1/0057 ,  H04B2201/70705 ,  H04L1/0046 ,  H04L1/0054 ,  H04L1/08 ,  H04L1/208 ,  H04L25/0262

Abstract: A system for determining the rate at which data has been encoded in the receiver (12) of a variable-rate communications system. The data is received in symbols that are grouped in frames. When data is transmitted at full rate, the frame is filled with symbols. When the data is transmitted at less than full rate, symbols are repeated within a frame until the frame is full or the symbols are spaced apart within a frame. At an encoding rate of one fourth the full rate, for example, each symbol in the frame is repeated four times or data is transmitted one quarter of the time. The incoming frames are decoded, for example by decoder (48), and re-encoded, for example by encoder (76), at each possible data rate. A comparator, for example comparator (84), compares the re-encoded symbols with the originally received symbols and a counter, for example counter (100), counts the number of symbol errors. Each decoding process produces an indication of the quality of the decoding process which may include Cyclic Redundancy Check (CRC) results, for example CRC (120), or Yamamoto Quality Metrics. The counted errors and the quality indication comprise an error metric which is passed to a processor, for example microprocessor (56). The processor analyzes the error metric for each data rate and determines the most probable rate at which the incoming symbols were encoded.

公开(公告)号：EP1849241B1

公开(公告)日：2016-01-20

申请号：EP06735447.2

申请日：2006-02-16

Applicant: QUALCOMM INCORPORATED

Inventor： LEE, Chong U. ,  HOLCMAN, Alejandro R ,  MIMRAN, Arik ,  WOLF, Jack Keil ,  SHEYNBLAT, Leonid ,  PADOVANI, Roberto ,  BENDER, Paul E. ,  REZAIIFAR, Ramin ,  KHAZAKA, Samir K.

IPC: H04W52/44 ,  H04L5/16 ,  H04B1/7085 ,  H04L12/12 ,  H04W52/02 ,  H04B17/00 ,  H04W76/04

CPC classification number: H04L5/16 ,  H04B1/7085 ,  H04B17/0082 ,  H04L12/12 ,  H04W52/0235 ,  H04W52/0283 ,  H04W52/44 ,  H04W76/20 ,  Y02D70/1222 ,  Y02D70/164 ,  Y02D70/40

Abstract: Operating a communication device in a half-duplex mode using only overhead channels; and substantially free running a timing reference obtained during reception to allow a timing reference value to drift during transmission.

Abstract translation: 仅使用架空通道，以半双工模式操作通信设备; 并且基本上自由地运行在接收期间获得的定时参考，以允许定时参考值在传输期间漂移。

公开(公告)号：EP2232931A1

公开(公告)日：2010-09-29

申请号：EP08862602.3

申请日：2008-10-31

Applicant: QUALCOMM Incorporated

Inventor： EDGE, Stephen W. ,  BLACK, Peter John ,  WU, Qiang ,  ZHAO, Wanlun ,  TOKGOZ, Yeliz ,  PADOVANI, Roberto ,  NAGUIB, Ayman Fawzy ,  KIM, Je Woo ,  DAYAL, Pranav ,  AGASHE, Parag Arun ,  BHUSHAN, Naga

IPC: H04W64/00

CPC classification number: H04W24/00 ,  G01S5/0226 ,  G01S5/0236 ,  H04W64/00

Abstract: Briefly, in accordance with one embodiment, a method of transmitting signals is provided. Signal waveforms are transmitted from at least two respective sectors. The at least two respective sectors are from at least two different sets of a superset of sectors. The transmitted signal waveforms include signal waveforms at least nearly mutually orthogonal at least along a particular signal dimension. An advantage of such an embodiment, for example, is reduced signal interference.

Abstract translation: 简而言之，根据一个实施例，提供一种发送信号的方法。 信号波形从至少两个相应扇区发送。 所述至少两个相应的扇区来自扇区的超集的至少两个不同的集合。 所发送的信号波形包括至少沿特定信号维度至少几乎相互正交的信号波形。 例如，这种实施例的优点是减少了信号干扰。

公开(公告)号：EP0951793B1

公开(公告)日：2008-01-16

申请号：EP97929732.2

申请日：1997-05-23

Applicant: QUALCOMM INCORPORATED

Inventor： WEAVER, Lindsay, A., Jr. ,  MUNSINGER, David, B. ,  PADOVANI, Roberto ,  ZIV, Noam, A. ,  KARMI, Gadi ,  GILHOUSEN, Klein, S.

IPC: H04Q7/38

CPC classification number: H04W36/30 ,  H04W36/0083

Abstract: In a communications network, a network user communicates through a remote unit (30) with another user via at least one base station (100). The communications network includes a first mobile switching center (MSC-I) which controls communications through a first set of base stations including a first base station (100). The remote unit (30) stores a list of active base stations which has an entry corresponding to each base station with which active communication is established. The first base station (100) has an entry on the list of active base stations. The first base station (100) measures a round trip delay of an active communication signal between the first base station (100) and the remote unit (30). A handoff of the active communication signal is initiated if the round trip delay of the active communication exceeds a threshold if the first base station (100) is designated as a reference base station. Alternatively, the remote unit (30) also stores a list of candidate base stations comprising an entry corresponding to each base station through which active communication may be possible but is not established. A handoff of the active communication signal is initiated if the list of candidate base stations comprises an entry corresponding to a triggering pilot signal.

公开(公告)号：EP1766801A1

公开(公告)日：2007-03-28

申请号：EP05764210.0

申请日：2005-06-30

Applicant: Qualcomm Incorporated

Inventor： CORALLI, Alessandro Vanelli ,  PFISTER, Henry David ,  HOU, Jilei ,  SMEE, John E. ,  PADOVANI, Roberto ,  BUTLER, Brian K. ,  LEVIN, Jeffrey A. ,  WILBORN, Thomas B. ,  BENDER, Paul E.

IPC: H04B1/707

CPC classification number: H04B1/7107 ,  H04B2201/70701

Abstract: Methods and systems for estimating and canceling pilot interference in a wireless (e.g., CDMA) communication system. In one method, a received signal comprised of a number of signal instances, each including a pilot, is initially processed to provide data samples. Each signal instance's pilot interference may be estimated by despreading the data samples with a spreading sequence for the signal instance, channelizing the despread data to provide pilot symbols, filtering the pilot symbols to estimate the channel response of the signal instance, and multiplying the estimated channel response with the spreading sequence. The pilot interference estimates due to a plurality of interfering multipaths are accumulated to derive the total pilot interference, which is subtracted from the data samples to provide pilot-canceled data samples. These samples are then processed to derive demodulated data for each of at least one (desired) signal instance in the received signal.

公开(公告)号：EP0956732B1

公开(公告)日：2005-08-03

申请号：EP98903590.2

申请日：1998-01-27

Applicant: QUALCOMM Incorporated

Inventor： PADOVANI, Roberto ,  QUICK, Roy, F.

IPC: H04Q7/38

CPC classification number: H04W36/18 ,  H04W48/20

公开(公告)号：EP0676107B1

公开(公告)日：2004-01-02

申请号：EP94932118.6

申请日：1994-10-28

Applicant: QUALCOMM Incorporated

Inventor： BLAKENEY, Robert, D., II ,  WEAVER, Lindsay, A., Jr. ,  ZIV, Noam, A. ,  WILLIAMSON, Paul, T. ,  PADOVANI, Roberto

IPC: H04J13/00

CPC classification number: H04B1/7117 ,  H04B1/7087

Abstract: In a receiver having a plurality of demodulation elements (204A, 204B, 204C), a method of assigning the plurality of demodulation element to a set of available signals. A first method emphasizes diversity of transmitting devices so that power control is optimal. A second method emphasizes the maximum signal strength available to produce aggregate maximum signal strength. Both methods control the number of reassignments so that excessive data is not lost during the reassignment process. The apparatus comprises the plurality of demodulation elements (204A, 204B, 204C), at least one searcher element (202), and a controller (200).