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1. 发明申请

WO2007109679A3 UPLINK CHANNEL ESTIMATION USING A SIGNALING CHANNEL 审中-公开
标题翻译：使用信号通道的上行信道估计
公开(公告)号：WO2007109679A3
公开(公告)日：2007-12-21
申请号：PCT/US2007064426
申请日：2007-03-20
申请人： QUALCOMM INC , KIM BYOUNG-HOON , MALLADI DURGA PRASAD , XU HAO
发明人： KIM BYOUNG-HOON , MALLADI DURGA PRASAD , XU HAO
IPC分类号： H04L27/26 , H04B7/005
CPC分类号： H04L27/261 , H04B7/04 , H04L1/0002 , H04L1/0026 , H04L1/06 , H04L5/023 , H04L25/0224 , H04W52/16 , H04W52/325
摘要： Techniques for efficiently deriving uplink channel estimates without consuming much additional uplink resources are described. A user equipment (UE) may send a request for uplink resources on a request channel (REQCH) whenever the UE desires to transmit data on the uplink. The UE may send the REQCH on a set of subcarriers and from multiple antennas, e.g., send REQCH data on data subcarriers and pilot on pilot subcarriers. A Node B may receive the request, estimate the complex channel gains for the pilot subcarriers based on received pilot symbols, and coherently demodulate received data symbols based on the channel gain estimates. The Node B may estimate the complex channel gains for the data subcarriers based on demodulated data symbols and derive a channel estimate for each UE antenna based on the channel gain estimates for the pilot and data subcarriers. The Node B may use the channel estimates for MIMO scheduling, subband scheduling, and rate selection.
摘要翻译：描述了用于有效地导出上行链路信道估计而不耗费大量附加上行链路资源的技术。每当UE希望在上行链路上传输数据时，用户设备（UE）可以在请求信道（REQCH）上发送上行链路资源的请求。 UE可以在一组子载波上从多个天线发送REQCH，例如在数据子载波上发送REQCH数据，并在导频子载波上导频。节点B可以接收请求，基于接收到的导频符号来估计导频子载波的复信道增益，并且基于信道增益估计相干解调接收到的数据符号。节点B可以基于解调的数据符号来估计数据子载波的复信道增益，并且基于导频和数据子载波的信道增益估计导出每个UE天线的信道估计。节点B可以使用用于MIMO调度，子带调度和速率选择的信道估计。

2. 发明申请

WO2008057969A2 JOINT USE OF MULTI-CARRIER AND SINGLE-CARRIER MULTIPLEXING SCHEMES FOR WIRELESS COMMUNICATION 审中-公开
标题翻译：用于无线通信的多载波和单载波复用方案的联合使用
公开(公告)号：WO2008057969A2
公开(公告)日：2008-05-15
申请号：PCT/US2007083382
申请日：2007-11-01
申请人： QUALCOMM INC , XU HAO , MALLADI DURGA PRASAD
发明人： XU HAO , MALLADI DURGA PRASAD
IPC分类号： H04L27/26 , H04L1/00 , H04L5/02
CPC分类号： H04L5/0007 , H04L1/0003 , H04L1/0025 , H04L1/06 , H04L5/0023 , H04L5/0039 , H04L5/0041 , H04L5/006 , H04L5/0092 , H04L27/2613
摘要： A communication system that facilitates transmissions in accordance with a single-carrier (SC) multiplexing scheme, a multi carrier (MC) multiplexing scheme or a combination thereof is disclosed. Based on various factors such as attributes associated with a UE (user equipment) or availability of resources, a base station can signal to the UE an appropriate multiplexing scheme to be adopted for particular transmissions. The UE can be scheduled for transmission in a semi-static mode wherein the UE employs the transmission scheme for a particular time interval or it may change the mode dynamically for different transmissions. For transmissions from the UE comprising a plurality of data streams with dissimilar attributes, the base station implements a MIMO (multiple input multiple output) system for the UE. This facilitates a UE to dynamically switch between or simultaneously adopt the various multiplexing schemes for communications and thereby fully utilize advantages associated with the different schemes.
摘要翻译：公开了一种便于根据单载波（SC）复用方案，多载波（MC）复用方案或其组合的传输的通信系统。基于诸如与UE（用户设备）相关联的属性或资源的可用性的各种因素，基站可以向UE发信号通知用于特定传输的适当的复用方案。 UE可以被调度用于半静态模式下的传输，其中UE针对特定时间间隔采用传输方案，或者其可以针对不同传输动态地改变模式。对于来自包括具有不同属性的多个数据流的UE的传输，基站实现用于UE的MIMO（多输入多输出）系统。这有助于UE在通信之间动态切换或同时采用各种复用方案进行通信，从而充分利用与不同方案相关的优点。

3. 发明申请

WO2011017468A3 MITIGATION OF CRS MISALIGNMENT IN COORDINATED MULTIPOINT COMMUNICATIONS 审中-公开
标题翻译：协调多点通信中CRS偏差的缓解
公开(公告)号：WO2011017468A3
公开(公告)日：2011-04-07
申请号：PCT/US2010044467
申请日：2010-08-04
申请人： QUALCOMM INC , LIU KE , ZHANG XIAOXIA , MALLADI DURGA PRASAD , XU HAO
发明人： LIU KE , ZHANG XIAOXIA , MALLADI DURGA PRASAD , XU HAO
IPC分类号： H04L5/00
CPC分类号： H04L5/0032 , H04L5/005 , H04L5/0091
摘要： Certain aspects of the present disclosure relate to a method for coordinated multi point wireless communications. A technique for joint processing of misaligned reference signals in coordinated multipoint communications is provided. In one aspect, a cell may transmit an offsetting reference signal which, when processed by a receiving user equipment, at least partially cancels a first reference signal transmitted by the cell.
摘要翻译：本公开的某些方面涉及一种用于协调多点无线通信的方法。提供了在协调的多点通信中对未对准的参考信号进行联合处理的技术。在一个方面中，小区可以发送偏移参考信号，该偏移参考信号在由接收用户设备处理时至少部分地消除由该小区发送的第一参考信号。

4. 发明申请

WO2009100220A3 DISCONTINUOUS TRANSMISSION SIGNALING OVER AN UPLINK CONTROL CHANNEL 审中-公开
标题翻译：上行链路控制信道的不连续传输信令
公开(公告)号：WO2009100220A3
公开(公告)日：2009-12-30
申请号：PCT/US2009033221
申请日：2009-02-05
申请人： QUALCOMM INC , XU HAO , MONTOJO JUAN , MALLADI DURGA PRASAD , GAAL PETER
发明人： XU HAO , MONTOJO JUAN , MALLADI DURGA PRASAD , GAAL PETER
IPC分类号： H04L1/00
CPC分类号： H04L1/0023 , H04L5/0007 , H04L5/0053 , H04L5/006 , H04L5/0064 , H04L5/0091
摘要： Systems and methodologies are described that facilitate signaling and detecting discontinuous transmission (DTX) in a wireless communication environment. A DTX indicator and Channel Quality Indicator (CQI) feedback can be multiplexed within a common uplink control channel subframe and transmitted to a base station when the access terminal is operating in DTX mode for an Acknowledgement Channel. Further, when operating in non-DTX mode, the access terminal can multiplex an ACK indicator or a NAK indicator with the CQI feedback within a common uplink control channel subframe, which can thereafter be transferred to the base station. Accordingly, the base station can detect DTX operation or non-DTX operation of the access terminal. For example, reference signal symbols can carry one of the DTX indicator, the ACK indicator, or the NAK indicator. Pursuant to another example, the CQI feedback and the DTX indicator can be combined and carried jointly by non-reference signal symbols.
摘要翻译：描述了在无线通信环境中促进信令和检测不连续传输（DTX）的系统和方法。 DTX指示符和信道质量指示符（CQI）反馈可以在公共上行链路控制信道子帧内多路复用，并且当接入终端以确认信道的DTX模式工作时被发送到基站。此外，当在非DTX模式下操作时，接入终端可以在公共上行链路控制信道子帧内将ACK指示符或NAK指示符与CQI反馈复用，然后可以将其传送到基站。因此，基站可以检测接入终端的DTX操作或非DTX操作。例如，参考信号符号可以携带DTX指示符，ACK指示符或NAK指示符之一。根据另一示例，CQI反馈和DTX指示符可以由非参考信号符号组合和携带。

5. 发明申请

WO2008144363A3 PILOT STRUCTURES FOR ACK AND CQI IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：无线通信系统中ACK和CQI的引导结构
公开(公告)号：WO2008144363A3
公开(公告)日：2009-03-26
申请号：PCT/US2008063651
申请日：2008-05-15
申请人： QUALCOMM INC , XU HAO , MALLADI DURGA PRASAD , WANG RACHEL
发明人： XU HAO , MALLADI DURGA PRASAD , WANG RACHEL
IPC分类号： H04L5/02 , H04L5/00 , H04L27/26
CPC分类号： H04L5/0051 , H04L5/0007 , H04L5/0016 , H04L5/0039 , H04L5/0053 , H04L5/0055 , H04L27/2613 , H04W52/16 , H04W52/241 , H04W52/325 , H04W52/48
摘要： Techniques for transmitting data and pilot for control information are described. In one aspect, a user equipment (UE) may spread a reference signal sequence with a first orthogonal sequence to obtain multiple pilot sequences. The UE may then send the multiple pilot sequences on multiple subcarriers in multiple symbol periods, one pilot sequence in each symbol period. The UE may modulate the reference signal sequence with control information (e.g., ACK information) to obtain a modulated sequence. The UE may spread the modulated sequence with a second orthogonal sequence to obtain multiple data sequences. The UE may then send the multiple data sequences on the multiple subcarriers in multiple symbol periods for data. In another aspect, the UE may send multiple pilot sequences on multiple subcarriers in multiple symbol periods separated by at least one symbol period, one pilot sequence in each symbol period.
摘要翻译：描述用于发送数据的技术和用于控制信息的导频。一方面，用户设备（UE）可以扩展具有第一正交序列的参考信号序列以获得多个导频序列。然后，UE可以在多个符号周期中的多个子载波上发送多个导频序列，每个符号周期中有一个导频序列。 UE可以用控制信息（例如，ACK信息）来调制参考信号序列以获得调制序列。 UE可以用第二正交序列扩展调制序列以获得多个数据序列。然后，UE可以在用于数据的多个符号周期中的多个子载波上发送多个数据序列。在另一方面，UE可以在多个符号周期中的多个子载波上发送多个导频序列，该符号周期由每个符号周期中的至少一个符号周期，一个导频序列隔开。

6. 发明申请

WO2008144362A3 METHOD AND APPARATUS FOR MULTIPLEXING AND POWER CONTROL OF UPLINK CONTROL CHANNELS IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：无线通信系统中上拉式控制通道的多路复用和功率控制方法与装置
公开(公告)号：WO2008144362A3
公开(公告)日：2009-03-26
申请号：PCT/US2008063650
申请日：2008-05-15
申请人： QUALCOMM INC , XU HAO , MALLADI DURGA PRASAD , WANG RACHEL
发明人： XU HAO , MALLADI DURGA PRASAD , WANG RACHEL
IPC分类号： H04B7/005
CPC分类号： H04L5/0051 , H04L5/0007 , H04L5/0016 , H04L5/0039 , H04L5/0053 , H04L5/0055 , H04L27/2613 , H04W52/16 , H04W52/241 , H04W52/325 , H04W52/48
摘要： Techniques for transmitting control information in a wireless communication system are described. The system may support acknowledgement (ACK) channels and channel quality indicator (CQI) channels, which may have different target signal-to-noise ratios (SNRs). The ACK and CQI channels from different user equipments (UEs) may be multiplexed on the same resource block. In one design, the transmit power of a CQI channel may be set to achieve a nominal target SNR for CQI when not multiplexed with the ACK channels and may be reduced to achieve a lower target SNR when multiplexed with the ACK channels. In another design, the transmit power of an ACK channel may be set to achieve a nominal target SNR for ACK when not multiplexed with the CQI channels and may be boosted to achieve a higher target SNR when multiplexed with the CQI channels. The CQI channel may randomly hop to mitigate performance degradation.
摘要翻译：描述用于在无线通信系统中发送控制信息的技术。该系统可以支持可能具有不同的目标信噪比（SNR）的确认（ACK）信道和信道质量指示符（CQI）信道。来自不同用户设备（UE）的ACK和CQI信道可以被复用在相同的资源块上。在一种设计中，可以设置CQI信道的发射功率，以便在不与ACK信道进行多路复用时实现CQI的标称目标SNR，并且当与ACK信道多路复用时，可以减小目标SNR。在另一种设计中，可以将ACK信道的发射功率设置为在不与CQI信道进行多路复用时实现用于ACK的标称目标SNR，并且当与CQI信道进行多路复用时可以升高以实现更高的目标SNR。 CQI信道可以随机地跳过以减轻性能下降。

7. 发明申请

WO2008058143A3 METHODS AND APPARATUS FOR POWER ALLOCATION AND/OR RATE SELECTION FOR UL MIMO/SIMO OPERATIONS WITH PAR CONSIDERATIONS 审中-公开
标题翻译：用于分配考虑的UL MIMO / SIMO操作的功率分配和/或速率选择的方法和装置
公开(公告)号：WO2008058143A3
公开(公告)日：2008-08-07
申请号：PCT/US2007083814
申请日：2007-11-06
申请人： QUALCOMM INC , MALLADI DURGA PRASAD , XU HAO
发明人： MALLADI DURGA PRASAD , XU HAO
IPC分类号： H04B7/005
CPC分类号： H04W52/367 , H04B7/0404 , H04L1/0003 , H04L5/0023 , H04L27/2614 , H04W52/146 , H04W52/42
摘要： A method for a wireless communication includes receiving or storing a peak to average (PAR) back off value; and applying the PAR back off value to determine the transmission power and rate for SIMO and MIMO transmissions. In one aspect, the PAR back off value is at least partially based on modulation type. In another aspect, the PAR back off value is more for higher order QAM than for QPSK. The power allocation algorithm for different UL MIMO schemes is described as follows. For MIMO without antenna permutation (e.g. per antenna rate control), different PAR back off values are considered for different data streams. For MIMO with antenna permutation or other unitary transformation such as virtual antenna mapping or precoding, the PAR back off are determined based on combined channel. The transmission data rate depends on power and also the receiver algorithms such as a MMSE receiver or MMSE-SIC receiver.
摘要翻译：一种用于无线通信的方法包括：接收或存储峰值平均值（PAR）回退值; 以及应用PAR回退值来确定SIMO和MIMO传输的传输功率和速率。在一个方面，PAR回退值至少部分地基于调制类型。在另一方面，对于高阶QAM而言，PAR倒退值比对于QPSK更多。不同UL MIMO方案的功率分配算法如下。对于没有天线排列的MIMO（例如，每个天线速率控制），对不同的数据流考虑不同的PAR后退值。对于具有天线置换或诸如虚拟天线映射或预编码的其它单位变换的MIMO，基于组合信道确定PAR退避。传输数据速率取决于功率，还有接收机算法，如MMSE接收机或MMSE-SIC接收机。

8. 发明申请

WO2011022404A2 METHODS AND APPARATUS FOR INTERFERENCE DECREASE/CANCELLATION ON DOWNLINK ACQUISITION SIGNALS 审中-公开
标题翻译：下行收购信号干扰降低/取消的方法和装置
公开(公告)号：WO2011022404A2
公开(公告)日：2011-02-24
申请号：PCT/US2010045765
申请日：2010-08-17
申请人： QUALCOMM INC , ZHANG XIAOXIA , MALLADI DURGA PRASAD , WEI YONGBIN , LUO TAO , XU HAO , DAMNJANOVIC ALEKSANDAR
发明人： ZHANG XIAOXIA , MALLADI DURGA PRASAD , WEI YONGBIN , LUO TAO , XU HAO , DAMNJANOVIC ALEKSANDAR
IPC分类号： H04L25/02
CPC分类号： H04L25/0202 , H04B1/7107 , H04J11/004 , H04J11/0069 , H04J11/0093 , H04L5/0023 , H04L25/0224
摘要： A method, an apparatus, and a computer program product for receiving a signal including components from a plurality of cells, estimating a channel from the received signal using one or more channel estimation schemes, removing a component signal using the estimated channel from the received signal to generate a processed signal and detecting a residual signal in the processed signal.
摘要翻译：一种用于从多个小区接收包括分量的信号的方法，装置和计算机程序产品，使用一个或多个信道估计方案从接收到的信号估计信道，使用来自接收信号的估计信道去除分量信号以产生经处理的信号并检测处理信号中的残留信号。

9. 发明申请

WO2009100217A3 ENHANCED MULTIPLEXING SYSTEM AND TECHNIQUE FOR UPLINK CONTROL CHANNELS 审中-公开
标题翻译：上行控制信道的增强型复用系统和技术
公开(公告)号：WO2009100217A3
公开(公告)日：2009-11-26
申请号：PCT/US2009033218
申请日：2009-02-05
申请人： QUALCOMM INC , XU HAO , MALLADI DURGA PRASAD , MONTOJO JUAN , GAAL PETER
发明人： XU HAO , MALLADI DURGA PRASAD , MONTOJO JUAN , GAAL PETER
IPC分类号： H04L5/00
CPC分类号： H04L5/0053 , H04L1/1671 , H04L5/0023 , H04L5/0064 , H04L5/0092 , H04W72/1268
摘要： A communication system incorporates a multiplexing scheme so that a base node that schedules user equipment (UE) can determine whether an ACK/NACK and/or a service request (SR) has been received when both uplink (UL) transmissions are simultaneously scheduled. Significant complexity reduction, better link efficiency, and higher multiplexing capability since the base node can interpret selective use by the UE of either the ACK/NACK or SR UL channel. Such interpretation can be extended to when multiple downlink (DL) transmission modes can be used, specifically DL single input multiple output (SIMO), DL multiple input multiple output (MIMO) with rank 1 transmission, and DL MIMO with rank 2 transmission. Based upon knowledge of the scheduling and DL transmission mode, the base node does not have to blind decode a number of possibilities due to the mapping of possible responses from the UE. In addition, the multiplexing scheme is applicable to FDD and TDD.
摘要翻译：通信系统包含复用方案，使得调度用户设备（UE）的基节点可以在同时调度两个上行链路（UL）传输时确定是否已经接收到ACK / NACK和/或服务请求（SR）。由于基节点可以解释UE对ACK / NACK或SR UL信道的选择性使用，所以显着的复杂度降低，更好的链路效率和更高的复用能力。当可以使用多个下行链路（DL）传输模式时，这种解释可以扩展到具体的DL单输入多输出（SIMO），具有秩1传输的DL多输入多输出（MIMO）和具有秩2传输的DL MIMO。基于调度和DL传输模式的知识，由于来自UE的可能响应的映射，基节点不必盲解码多种可能性。另外，复用方案适用于FDD和TDD。

10. 发明申请

WO2009023681A3 MIMO TRANSMISSION WITH SPATIAL PRE-CODING 审中-公开
标题翻译：具有空间预编码的MIMO传输
公开(公告)号：WO2009023681A3
公开(公告)日：2009-05-22
申请号：PCT/US2008072932
申请日：2008-08-12
申请人： QUALCOMM INC , XU HAO , MALLADI DURGA PRASAD
发明人： XU HAO , MALLADI DURGA PRASAD
IPC分类号： H04L25/03
CPC分类号： H04L25/03343 , H04B7/0617 , H04B7/0632 , H04B7/0639 , H04B7/10 , H04L1/0001 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L5/0023 , H04L5/0051 , H04L5/0053 , H04L25/0204 , H04L25/0228 , H04L25/0248 , H04L25/0398 , H04L27/0008 , H04L27/0012 , H04L27/261 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： Techniques for sending a MIMO transmission in a wireless communication system are described. In one design, a transmitter sends a first reference signal to a receiver. The receiver selects a precoding matrix based on the first reference signal and in accordance with a selection criterion. The receiver estimates noise and interference at the receiver and determines channel quality indicator (CQI) or modulation and coding scheme (MCS) information based on the precoding matrix and the estimated noise and interference. The receiver sends the CQI or MCS information and a second reference signal to the transmitter. The transmitter selects the precoding matrix based on the second reference signal and in accordance with the same selection criterion used by the receiver. The transmitter then sends a MIMO transmission to the receiver based on the CQI or MCS information obtained from the receiver and the precoding matrix selected by the transmitter.
摘要翻译：描述了在无线通信系统中发送MIMO传输的技术。在一种设计中，发射机向接收机发送第一参考信号。接收机根据第一参考信号并根据选择标准选择预编码矩阵。接收机估计接收机的噪声和干扰，并且基于预编码矩阵和估计的噪声和干扰来确定信道质量指示符（CQI）或调制和编码方案（MCS）信息。接收机向发射机发送CQI或MCS信息和第二参考信号。发射机根据第二参考信号并根据接收机使用的相同选择标准来选择预编码矩阵。然后，发射机基于从接收机获得的CQI或MCS信息和由发射机选择的预编码矩阵向接收机发送MIMO传输。

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