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公开(公告)号:IN3554CHN2014A
公开(公告)日:2015-09-25
申请号:IN3554CHN2014
申请日:2014-05-12
Applicant: QUALCOMM INC
Inventor: HUANG YI , LUO TAO , YOO TAESANG , LUO XILIANG
IPC: H04L27/26
Abstract: Estimation of timing errors is disclosed that uses user equipment reference signals (UERSs). A UE models each channel in a user equipment reference signal (UERS) as a channel on an adjacent UERS tone multiplied by a phase ramping term. This phase ramping term is determined using an estimator on the modeled channels. The UE then determines the equivalent timing error by mapping the phase ramping terms into the estimated timing errors in the time domain. In coordinated multipoint (CoMP) systems the UERS based timing error may be used to identify an aligned common reference signal (CRS) associated with the network entity transmitting the data. With this determination the UE may estimate a CRS based timing error and either substitute the CRS based timing error for the UERS based timing error or calculate a further average timing error based on both the CRS based and UERS based timing errors.
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公开(公告)号:IN2213CHN2014A
公开(公告)日:2015-05-29
申请号:IN2213CHN2014
申请日:2014-03-21
Applicant: QUALCOMM INC
Inventor: BHATTAD KAPIL , GOROKHOV ALEXEI YURIEVITCH , JI TINGFANG , LIU KE , LUO TAO , LUO XILIANG
Abstract: An idle mode UE can RACH to a cell different from the cell paging the UE. The UE can be allocated additional time to respond to all cells in the neighborhood to identify the cell in which to RACH. Interference cancellation can occur at different rates based on whether the UE is in connected mode or idle mode. The time to respond to the page can be a function of a paging cycle. Additionally a variable bias may promote early handoff to lower power cells and late handoff to high power cells.
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公开(公告)号:ES2510402T3
公开(公告)日:2014-10-21
申请号:ES11716700
申请日:2011-04-05
Applicant: QUALCOMM INC
Inventor: LUO XILIANG , CHEN WANSHI , LUO TAO , GAAL PETER , ZHANG XIAOXIA , XU HAO , MONTOJO JUAN
IPC: H04L5/00
Abstract: Un procedimiento para la comunicación inalámbrica, que comprende: determinar, en un equipo de usuario (UE), una sub-trama en la cual enviar datos sobre una portadora de enlace ascendente; determinar información de control de un primer tipo para un primer conjunto de portadoras de enlace descendente, a enviar en la sub-trama; determinar información de control de un segundo tipo para un segundo conjunto de portadoras de enlace descendente, a enviar en la sub-trama; multiplexar la información de control del primer tipo para obtener una primera información de control multiplexada, y la información de control del segundo tipo para obtener una segunda información de control multiplexada; codificar la primera información de control multiplexada para obtener una primera información de control conjuntamente codificada, y la segunda información de control multiplexada para obtener una segunda información de control conjuntamente codificada; multiplexar las informaciones de control codificadas, primera y segunda, con los datos a enviar sobre la portadora de enlace ascendente; y enviar, por parte del UE, las informaciones de control codificadas multiplexadas, primera y segunda, y los datos por un canal de datos sobre la portadora de enlace ascendente en la sub-trama.
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公开(公告)号:ZA201208614B
公开(公告)日:2013-07-31
申请号:ZA201208614
申请日:2012-11-15
Applicant: QUALCOMM INC
Inventor: YOO TAESANG , LUO XILIANG , LUO TAO
IPC: H04B20060101 , H04L20060101
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公开(公告)号:ZA201106592B
公开(公告)日:2012-05-30
申请号:ZA201106592
申请日:2011-09-08
Applicant: QUALCOMM INC
Inventor: CHEN WANSHI , LUO XILIANG , MONTOJO JUAN , ZHANG XIAOXIAO
IPC: H04L20060101
Abstract: Systems and methods are disclosed for control-data multiplexing as well as control-data decoupling. In one embodiment, a semi-static approach is disclosed, wherein the upper layer(s) are configured such that each user equipment uses either control-data multiplexing or control-data decoupling. Additionally or alternatively, a dynamic approach is disclosed, in which one bit is added to the DCI format which indicates whether the UE is using control-data multiplexing or control-data coupling.
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公开(公告)号:CA2752083A1
公开(公告)日:2010-09-02
申请号:CA2752083
申请日:2010-02-23
Applicant: QUALCOMM INC
Inventor: CHEN WANSHI , MONTOJO JUAN , LUO XILIANG , ZHANG XIAOXIA
IPC: H04L5/00
Abstract: Systems and methods are disclosed for control-data multiplexing as well as control-data decoupling. In one embodiment, a semi-static approach is disclosed, wherein the upper layer(s) are configured such that each user equipment uses either control-data multiplexing or control-data decoupling. Additionally or alternatively, a dynamic approach is disclosed, in which one bit is added to the DCI format which indicates whether the UE is using control-data multiplexing or control-data coupling.
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公开(公告)号:NO20092094A
公开(公告)日:2009-05-29
申请号:NO20092094
申请日:2009-05-28
Applicant: QUALCOMM INC
Inventor: MALLADI DURGA PRASAD , CHEN WANSHI , ZHANG XIAOXIA , LUO XILIANG
CPC classification number: H04W72/0486 , H04L5/0007 , H04L5/0037 , H04L5/0092 , H04W52/248 , H04W52/34
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公开(公告)号:MX2009004494A
公开(公告)日:2009-05-13
申请号:MX2009004494
申请日:2007-11-01
Applicant: QUALCOMM INC
Inventor: MALLADI DURGA PRASAD , ZHANG XIAOXIA , CHEN WANSHI , LUO XILIANG
Abstract: Se proporciona un sistema y método para facilitar la administración de recursos en sistemas OFDM; el sistema permite niveles diferentes y flexibles de operaciones métricas de células de recurso (por ejemplo, administración de carga de enlace ascendente, control de admisión, control de congestión, control de transferencia de señal) para diferentes sub-bandas; para la administración de carga de enlace ascendente, existen múltiples puntos de operación de carga distintos (por ejemplo, IoT, RoT) por grupo de sub-bandas en lugar del mismo nivel de operación a través de toda la banda disponible; los grupos de sub-bandas abarcan la banda completa; el sistema de facilitación también comprende una variedad de protocolos de transmisión, métodos de paso progresivo variables en incremento de comandos y métodos de respuesta de comandos robustos; el sistema entonces proporciona una administración más flexible de recursos de enlace inverso y una utilización más eficiente del ancho de banda.
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公开(公告)号:CA2857009A1
公开(公告)日:2008-05-15
申请号:CA2857009
申请日:2007-11-01
Applicant: QUALCOMM INC
Inventor: CHEN WANSHI , ZHANG XIAOXIA , MALLADI DURGA PRASAD , LUO XILIANG
Abstract: A system and method for facilitating resource management in OFDM systems is provided. The system permits different and flexible resource cell metric operations levels (e.g. uplink load management, admission control, congestion control, signal handoff control) for different sub-bands. For the uplink load management, there are multiple distinct load operation points (e.g. IoT, RoT) per sub-band group instead of the same operation level across the entire available band. The sub-band groups encompass the entire band. The facilitation system also comprises a variety of transmitting protocols, command increment variable stepsize methods and robust command response methods. The system thus provides more flexible reverse link resource management and more efficient utilization of the bandwidth.
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公开(公告)号:WO2012027264A3
公开(公告)日:2012-04-19
申请号:PCT/US2011048600
申请日:2011-08-22
Applicant: QUALCOMM INC , LUO XILIANG , GAAL PETER , MONTOJO JUAN , CHEN WANSHI , XU HAO , LUO TAO , BHATTAD KAPIL
Inventor: LUO XILIANG , GAAL PETER , MONTOJO JUAN , CHEN WANSHI , XU HAO , LUO TAO , BHATTAD KAPIL
CPC classification number: H04L5/0023 , H04B7/0413 , H04B7/0456 , H04B7/0486 , H04L1/0031 , H04L1/1896 , H04L5/0053 , H04L5/0091 , H04L25/03343 , H04L25/03891 , H04W72/042
Abstract: A precoding scheme to accommodate user equipment (UEs) having higher Doppler speeds. In such transmission schemes, a different precoding matrix is applied to each orthogonal frequency division multiplex (OFDM) symbol in the transmission stream. Additionally, a downlink control message format is defined to handle assignment of multiple different transmission schemes using the same message format. The downlink control message format includes a control element in one of the message fields along with a set of parameters specifically applicable to the assigned transmission scheme. Based on the value of this control element, the UE sets the specific transmission scheme and determines a set of interpretation rules uniquely associated with that transmission scheme. Using the interpretation rules, the UE is able to read the set of parameters as applied to the selected transmission scheme.
Abstract translation: 预编码方案适应具有更高多普勒速度的用户设备(UE)。 在这样的传输方案中,不同的预编码矩阵被应用于传输流中的每个正交频分复用(OFDM)符号。 此外,下行链路控制消息格式被定义为处理使用相同消息格式的多个不同传输方案的分配。 下行链路控制消息格式包括在消息字段之一中的控制元素以及特别适用于所分配的传输方案的一组参数。 基于该控制元素的值,UE设置特定传输方案并确定唯一与该传输方案相关联的一组解释规则。 使用解释规则,UE能够读取应用于所选传输方案的一组参数。
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