中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

98 records (took 0.024 seconds)

    POWER HEADROOM MANAGEMENT IN WIRELESS COMMUNICATION SYSTEMS
    81.
    发明专利
    POWER HEADROOM MANAGEMENT IN WIRELESS COMMUNICATION SYSTEMS 未知

    公开(公告)号：MY154520A

    公开(公告)日：2015-06-30

    申请号：MYPI20102895

    申请日：2009-01-23

    Applicant: QUALCOMM INC

    Inventor： ARVIND ATHALYE SANJEEV ,  AVNEESH AGRAWAL

    IPC: H04W52/16

    Abstract: SYSTEMS AND METHODOLOGIES ARE DESCRIBED THAT FACILITATE POWER HEADROOM MANAGEMENT IN A WIRELESS COMMUNICATION SYSTEM (1000). AS DESCRIBED HEREIN, A PREDEFINED RELATIONSHIP BETWEEN LOCATIONS ALONG A SYSTEM FREQUENCY BAND AND CORRESPONDING POWER BACKOFF PARAMETERS IS UTILIZED TO MINIMIZE SPURIOUS EMISSIONS OUTSIDE THE SYSTEM FREQUENCY BAND AND/OR EXCESSIVE INTERFERENCE BY, FOR EXAMPLE, ASSOCIATING LOCATIONS NEAR ONE OR MORE EDGES OF THE PERMITTED FREQUENCY BAND WITH SUBSTANTIALLY HIGH POWER BACKOFF PARAMETERS. AS FURTHER DESCRIBED HEREIN, THE PREDEFINED RELATIONSHIP CAN BE KNOWN A PRIORI TO THE BASE STATION (420) AND THE MOBILE TERMINAL.

    HEARABILITY IMPROVEMENTS FOR REFERENCE SIGNALS
    82.
    发明专利
    HEARABILITY IMPROVEMENTS FOR REFERENCE SIGNALS 未知

    公开(公告)号：PH12014500672A1

    公开(公告)日：2015-05-11

    申请号：PH12014500672

    申请日：2014-03-25

    Applicant: QUALCOMM INC

    Inventor： AVNEESH AGRAWAL ,  ASHWIN SAMPATH ,  RAVI PALANKI ,  NAGA BHUSHAN ,  SEKHAR BACHU RAJA ,  KHANDEKAR AAMOD D

    IPC: H04L5/00

    Abstract: Systems and methodologies are described that facilitate providing high reuse for transmitting reference signals, such as positioning reference signals (PRS) and cell- specific reference signals (CRS), to improve hearability thereof for applications such as trilateration and/or the like. In particular, PRSs can be transmitted in designated or selected positioning sub frames. Resource elements within the positioning sub frame can be selected for transmitting the PRSs and can avoid conflict with designated control regions, resource elements used for transmitting cell-specific reference signals, and/or the like. Resource elements for transmitting PRSs can be selected according to a planned or pseudo-random reuse scheme. In addition, a transmit diversity scheme can be applied to the PRSs to minimize impact of introducing the PRSs to legacy devices. Moreover, potions of a subframe not designated for PRS transmission can be utilized for user plane data transmission.

    REVERSE LINK TRAFFIC POWER CONTROL FOR LBC FDD
    83.
    发明专利
    REVERSE LINK TRAFFIC POWER CONTROL FOR LBC FDD 未知

    公开(公告)号：MY150919A

    公开(公告)日：2014-03-14

    申请号：MYPI20092006

    申请日：2007-11-29

    Applicant: QUALCOMM INC

    Inventor： ALEXEI GOROKHOV ,  JABER BORRAN MOHAMMAD ,  AVNEESH AGRAWAL

    IPC: H04B7/00

    Abstract: SYSTEMS AND METHODOLOGIES ARE DESCRIBED THAT FACILITATE CONTROLLING REVERSE LINK POWER ON A TRAFFIC CHANNEL. ASSIGNMENTS FOR REVERSE LINK COMMUNICATION CAN BE YIELDED. INTERFERENCE FROM MOBILE DEVICES (104) IN NEIGHBOURING SECTORS CAN BE MONITORED AND OTHER SECTOR INTERFERENCE (OSI) INDICATIONS CAN BE BROADCASTED. THE OSI INDICATIONS CAN BE OBTAINED BY MOBILE DEVICES (104) TO ALTER DELTA VALUES EMPLOYED FOR DELTA-BASED POWER CONTROL. FURTHER, A MAXIMUM ALLOWABLE AMOUNT OF REDUCTION OF A DELTA VALUE CAN BE ALLOCATED PER QoS CLASS. MOREOVER, MOBILE DEVICES (104) CAN PROVIDE IN-BAND AND OUT-OF- BAND FEEDBACK, WHICH CAN BE LEVERAGED FOR FUTURE ASSIGNMENTS. FIG 7.

    Power control for a wireless communication system utilizing orthogonal multiplexing
    85.
    发明专利
    Power control for a wireless communication system utilizing orthogonal multiplexing 未知

    公开(公告)号：AU2011265406B2

    公开(公告)日：2012-10-18

    申请号：AU2011265406

    申请日：2011-12-21

    Applicant: QUALCOMM INC

    Inventor： SUTIVONG ARAK ,  JULIAN DAVID JONATHAN ,  AVNEESH AGRAWAL

    IPC: H04B7/005

    Abstract: Techniques for adjusting transmit power to mitigate both intra-sector interference to a serving base station and inter-sector interference to neighbor base stations are described. The amount of inter sector interference that a terminal may cause may be roughly estimated based on the total interference observed by each neighbor base station, channel gains for the serving and neighbor base stations, and the current transmit power level. The transmit power may be decreased if high interference is observed by a neighbor base station and increased otherwise. The transmit power may be adjusted by a larger amount and/or more frequently if the terminal is located closer to the neighbor base station observing high interference and/or if the current transmit power level is higher, and vice versa. The intra-sector interference is maintained within an acceptable level by limiting a received SNR for the terminal to be within a range of allowable SNRs. Start 300 Process the OSI bit of the strongest neighbor base station '' r322 A332 Determine probability for. Determine probability for decreasing transmit power, increasing transmit power, Prdn(n), based on transmit Prop(n), based on transmit power delta and channel power delta and channel gain ratio for the strongest gain ratio for the strongest neighbor base station neighbor base station 324 t , 134 ndomly select a value x Randomly select a value x between 0.0 and 1.0 between 0.0 and 1.0 x

    WIRELESS COMMUNICATION SYSTEM WITH IMPROVED BROADCAST COVERAGE
    86.
    发明专利
    WIRELESS COMMUNICATION SYSTEM WITH IMPROVED BROADCAST COVERAGE 未知

    公开(公告)号：MY146305A

    公开(公告)日：2012-07-31

    申请号：MYPI20052546

    申请日：2005-06-03

    Applicant: QUALCOMM INC

    Inventor： AVNEESH AGRAWAL ,  MALLADI DURGA P ,  ANASTASIOS STAMOULIS ,  ASHOK MANTRAVADI ,  RAMASWAMY MURALI

    IPC: H04L1/00 ,  H04L27/00 ,  H04L5/02 ,  H04L27/26 ,  H04W88/10 ,  H04W92/10

    Abstract: TECHNIQUES TO TRIMSMIT DATA WITH CYCLIC DELAY DIVERSITY AND PILOT STAGGERING ARE DESCRIBED. FOR CYCLIC DELAY DIVERSITY, OFDM SYMBOLS HAVING DIFFERENT CYCLIC DELAY DURATIONS ARE GENERATED. THE CYCLIC DELAY DURATIONS FOR THE OFDM SYMBOLS MAY BE SELECTED TO BE TIME VARYING WITH RESPECT TO THE CYCLIC DELAY DURATIONS FOR OFDM SYMBOLS TRANSMITTED BY A NEIGHBORING BASE STATION (110). AN FDM PILOT IS GENERATED AND MULTIPLEXED ON MULTIPLE SETS OF SUBBANDS IN DIFFERENT SYMBOL PERIODS. WAVEFORMS FOR A SECOND RADIO TECHNOLOGY (E.G., W-CDMA) MAY BE GENERATED FOR DATA TO BE TRANSMITTED WITH THIS RADIO TECHNOLOGY. THE OFDM SYMBOLS ARE MULTIPLEXED ONTO TIME SLOTS USED FOR OFDM, AND THE WAVEFORMS FOR THE SECOND RADIO TECHNOLOGY ARE MULTIPLEXED ONTO TIME SLOTS USED FOR THIS RADIO TECHNOLOGY. ONE OR MULTIPLE MODULATED SIGNALS MAY BE GENERATED BASED ON THE MULTIPLEXED OFDM SYMBOLS AND WAVEFORMS. EACH MODULATED SIGNAL IS TRANSMITTED FROM A RESPECTIVE ANTENNA.

    METHOD AND APPARATUS FOR COMMUNICATION IN A SYSTEM EMPLOYING DIFFERING TRANSMISSION PROTOCOLS
    87.
    发明专利
    METHOD AND APPARATUS FOR COMMUNICATION IN A SYSTEM EMPLOYING DIFFERING TRANSMISSION PROTOCOLS 未知

    公开(公告)号：MY143990A

    公开(公告)日：2011-07-29

    申请号：MYPI20054490

    申请日：2005-09-23

    Applicant: QUALCOMM INC

    Inventor： ASHOK MANTRAVADI ,  PRASAD MALLADI DURGA ,  AVNEESH AGRAWAL ,  ANASTASIOS STAMOULIS

    IPC: H04L25/02 ,  H04W52/32

    Abstract: A METHOD AND APPARATUS FOR CHANNEL ESTIMATION IN A SYSTEM EMPLOYING DIFFERING TRANSMISSION PROTOCOLS AS BROADCAST/MULTICAST AND UNICAST PROTOCOLS. THE NUMBER OF PILOT TONES USED FOR BROADCAST TRANSMISSION IS GREATER THAN THE NUMBER OF PILOT TONES USED FOR A UNICAST TRANSMISSION. THE CHANNEL ESTIMATION MAY BE SIGNIFICANTLY DEGRADED WHEN A SYMBOL FROM A BROADCAST TRANSMISSION SLOT IS ADJACENT TO A SYMBOL FROM A UNICAST TRANSMISSION SLOT, SINCE THE PILOTS OF THE ADJACENT SLOTS ARE USED FOR THE CHANNEL ESTIMATE. THEREFORE, IT IS DETERMINED WHETHER A FIRST TIME SLOT OF ONE TRANSMISSION PROTOCOL (MULTICAST SLOT) IS ADJACENT TO A SECOND TIME SLOT OF ANOTHER TRANSMISSION PROTOCOL (UNICAST SLOT), AND IF A FIRST SYMBOL OF THE UNICAST SLOT. THE PILOT POWER OR/AND THE NUMBER OF THE PILOT SUBCARRIERS IS/ARE INCREASED FOR THE EDGE SYMBOL OF THE MULTICAST SLOT FOR PURPOSES OF CHANNEL ESTIMATION USING THE EDGE SYMBOL.

    CONTROL DE POTENCIA PARA UN SISTEMA DE COMUNICACIONES INALAMBRICO UTILIZANDO MULTIPLEXACION ORTOGONAL.
    88.
    发明专利
    CONTROL DE POTENCIA PARA UN SISTEMA DE COMUNICACIONES INALAMBRICO UTILIZANDO MULTIPLEXACION ORTOGONAL. 未知

    公开(公告)号：ES2331960T3

    公开(公告)日：2010-01-21

    申请号：ES05758719

    申请日：2005-06-07

    Applicant: QUALCOMM INC

    Inventor： SUTIVONG ARAK ,  AVNEESH AGRAWAL ,  JULIAN DAVID JONATHAN

    IPC: H04W52/24 ,  H04B7/005 ,  H04L1/00 ,  H04L1/20 ,  H04W24/00 ,  H04W28/04 ,  H04W52/28 ,  H04W52/36 ,  H04W52/60 ,  H04W88/08

    Abstract: Un procedimiento para llevar a cabo control de potencia para un terminal inalámbrico en un sistema de comunicaciones inalámbrico, que comprende: obtener (314; 414), para cada una de al menos una estación base, una indicación de interferencia observada por la estación base, siendo cada una de las al menos una estación base una estación base vecina no designada para recibir una transmisión de datos enviada por el terminal inalámbrico o una estación base de servicio designada para recibir la transmisión de datos enviada por el terminal inalámbrico; caracterizado por estimar una ganancia de canal para la estación base de servicio; y para cada estación base vecina que va a considerarse en el ajuste de la potencia de transmisión, estimar una ganancia de canal para la estación base vecina, y ajustar la potencia de transmisión para la transmisión de datos en base a una indicación obtenida para la estación base vecina y las ganancias de canal estimadas para las estaciones base vecinas y de servicio.

Patent Agency Ranking