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公开(公告)号：UA96004C2
公开(公告)日：2011-09-26
申请号：UAA200908338
申请日：2008-01-10
Applicant: QUALCOMM INC
Inventor： MALLADI DURGA PRASAD , KIM BYOUNG-HOON
Abstract: Описаніспособидляпередачіінформаціїз використаннямпослідовностейз циклічнимзсувом. Водномуваріантіпершаі другапослідовностіможутьбутизгенерованішляхомциклічногозсувубазовоїпослідовностінапершуі другувеличинивідповідно. Базовапослідовністьможеявлятисобоюпослідовність CAZAC, PN послідовністьабодеякуіншупослідовністьз гарнимивластивостямикореляції. Циклічнізсувидляпершоїі другоїпослідовностейможутьбутивизначенінапідставішаблонапереключення. Першамодульованапослідовністьможебутизгенеровананапідставіпершоїпослідовностіі першогосимволумодуляції, івонаможебутипереданав першомучасовомуінтервалі. Другамодульованапослідовністьможебутизгенеровананапідставідругоїпослідовностіі другогосимволумодуляції, івонаможебутипереданав другомучасовомуінтервалі. Кожнамодульованапослідовністьможебутипереданапо K піднесучих, щоідутьодназаодною, використовуючисхемулокалізованогомультиплексуванняз частотнимрозділенням (LFDM).
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公开(公告)号：NZ577774A
公开(公告)日：2011-08-26
申请号：NZ57777408
申请日：2008-01-10
Applicant: QUALCOMM INC
Inventor： MALLADI DURGA PRASAD , KIM BYOUNG-HOON
Abstract: A method for exchanging information in a wireless communication system and an apparatus for wireless communication are disclosed. The apparatus comprises means for using a first sequence for exchanging first information in a first time interval and means for using a second sequence for exchanging second information in a second time interval. The first sequence is modulated based on the first information to generate a first modulated sequence and the first modulated sequence is sent on a first subset of a plurality of subcarriers. The second sequence is a cyclic shift of the first sequence and is modulated based on the second information to generate a second modulated sequence. The second modulated sequence is sent on a second subset of a plurality of subcarriers. The base sequence is a constant amplitude zero auto correlation sequence.
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公开(公告)号：BRPI0709079A2
公开(公告)日：2011-06-28
申请号：BRPI0709079
申请日：2007-03-26
Applicant: QUALCOMM INC
Inventor： KIM BYOUNG-HOON , MALLADI DURGA PRASAD , DAMNJANOVIC JELENA
Abstract: Techniques for efficiently sending channel state information using differential encoding are described. Differential encoding may be performed across space, across frequency, across space and frequency, across space, frequency and time, or across some other combination of dimensions. In one design, spatial state information may be determined for multiple spatial channels on multiple subbands. The spatial channels may correspond to different antennas, different precoding vectors, etc. Channel quality indicator (CQI) values may be obtained for the multiple spatial channels on the multiple subbands. The CQI values may be differentially encoded across the multiple spatial channels and the multiple subbands to obtain differential CQI information. In another design, CQI values may be obtained for multiple spatial channels on the multiple subbands in multiple time intervals and may be differentially encoded across space, frequency and time. The differential CQI information and the spatial state information may be sent as feedback.
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公开(公告)号：BRPI0708952A2
公开(公告)日：2011-06-14
申请号：BRPI0708952
申请日：2007-03-19
Applicant: QUALCOMM INC
Inventor： KIM BYOUNG-HOON , MALLADI DURGA PRASAD
IPC: H04L1/00
Abstract: Techniques for supporting MIMO transmission are described. User equipments (UEs) are classified into a first group of UEs to be scheduled individually and a second group of UEs that can be scheduled together. The classification may be based upon the number of transmit and receive antennas, sector loading, data requirements, long-term channel statistics, the number of UEs, etc. Channel quality indicator (CQI) information received from the UEs is interpreted in different manners depending on the groups to which the UEs belong. A single UE may be selected at a time from the first group or multiple UEs may be selected at a time from the second group for MIMO transmission. A MIMO transmission may be sent to a single UE in the first group or multiple UEs in the second group at rates selected based upon the CQI information.
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公开(公告)号：AU2007226918B2
公开(公告)日：2011-06-02
申请号：AU2007226918
申请日：2007-03-20
Applicant: QUALCOMM INC
Inventor： MALLADI DURGA PRASAD , KIM BYOUNG-HOON , XU HAO
IPC: H04L1/00
Abstract: Various methods and systems for determining reverse-link data rates in a multi-user communication system are disclosed. For example, an apparatus for controlling a data rate of at least a first UE in a multi-user communication system is disclosed. The apparatus may include a channel estimation device configured to determine channel estimates for a plurality of different reverse-link signals to produce a plurality of channel estimates, a demodulation device configured to determine a first signal-to-noise (SNR) ratio for the first UE using the plurality of different channels estimates, and a data rate determining device configured to determine a first reverse-link data rate for the first UE using the first SNR.
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Patent Agency Ranking
公开(公告)号：AU2007317484B2
公开(公告)日：2011-03-17
申请号：AU2007317484
申请日：2007-10-31
Applicant: QUALCOMM INC
Inventor： MALLADI DURGA PRASAD , LUO TAO , KIM BYOUNG-HOON , MONTOJO JUAN
Abstract: Systems and methodologies are described that facilitate efficient cell acquisition in a wireless communication system. In one aspect, a reference signal for use in cell acquisition can be constructed in a bandwidth-agnostic manner such that it contains a common central portion in a predetermined frequency band that is independent of a bandwidth utilized by an associated wireless communication system. The central portion can be constructed as a two-dimensional block in time and frequency that spans a default cell search bandwidth, a predetermined bandwidth specified by synchronization codes or other signals, or another suitable bandwidth. A reference signal can then be constructed form the central portion by tiling or expanding the central portion such that it spans the entire system bandwidth.
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公开(公告)号：AU2008213682B2
公开(公告)日：2011-03-03
申请号：AU2008213682
申请日：2008-02-06
Applicant: QUALCOMM INC
Inventor： YOO TAESANG , ZHANG XIAOXIA , KIM BYOUNG-HOON , MALLADI DURGA PRASAD
IPC: H04B7/06
Abstract: A method for wireless communication, comprising: selecting a delay from among a plurality of delays; sending the selected delay from a first entity to a second entity; and exchanging data with the second entity with cyclic delay diversity based on the selected delay.
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公开(公告)号：DE602005024013D1
公开(公告)日：2010-11-18
申请号：DE602005024013
申请日：2005-08-26
Applicant: QUALCOMM INC
Inventor： KIM BYOUNG-HOON
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公开(公告)号：AU2010214773A1
公开(公告)日：2010-09-23
申请号：AU2010214773
申请日：2010-09-02
Applicant: QUALCOMM INC
Inventor： KIM BYOUNG-HOON
Abstract: Systems and methods for improving the performance of a MIMO wireless communication system by reducing the amount of uplink resources that are needed to provide channel performance feedback for the adjustment of data rates on the downlink MIMO channels. In one embodiment, a method comprises encoding each of a set of data streams according to corresponding data rates, permuting the data streams on a set of MIMO channels according to a full permutation of combinations, transmitting the permuted data streams, receiving the permuted data streams, decoding and determining an SNR for each of the data streams, computing a condensed SNR metric for the set of data streams, providing the condensed metric as feedback, determining a set of individual SNR metrics for the data streams based on the condensed SNR metric, and adjusting the data rates at which the data streams are encoded based on the individual SNR metrics.
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公开(公告)号：NZ566171A
公开(公告)日：2010-08-27
申请号：NZ56617106
申请日：2006-08-22
Applicant: QUALCOMM INC
Inventor： KADOUS TAMER , KIM BYOUNG-HOON
IPC: H04B7/06
Abstract: Disclosed is a method for receiving and transmitting from virtual antennas rather than physical ones. The method includes selecting a virtual antenna from a plurality of virtual antennas, and then providing an indication of the virtual antenna for use for data transmission. The virtual antennas are formed with a plurality of physical antennas.
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