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1. 发明申请

WO2009023825A2 ANTENNA SWITCHING AND UPLINK SOUNDING CHANNEL MEASUREMENT 审中-公开
标题翻译：天线开关和上行通道测量
公开(公告)号：WO2009023825A2
公开(公告)日：2009-02-19
申请号：PCT/US2008/073289
申请日：2008-08-15
申请人： QUALCOMM INCORPORATED , KIM, Byoung-hoon , MALLADI, Durga, Prasad , MONTOJO, Juan , SARKAR, Sandip
发明人： KIM, Byoung-hoon , MALLADI, Durga, Prasad , MONTOJO, Juan , SARKAR, Sandip
IPC分类号： H04B7/06 , H04L1/06 , H04L25/02
CPC分类号： H04L25/0208 , H04B7/061 , H04L1/0026 , H04L1/0693 , H04L25/0224
摘要： Systems and methodologies are described that facilitate employing downlink precoding based on uplink sounding channel measurement and channel reciprocity in time division duplex or time division multiplex systems. In particular, mechanism are provided that enable downlink precoding in situations where user equipment antenna configuration includes an unequal number of transmit chains and receive chains. A mobile device transmits modulated sounding reference signals on each antenna during a calibration stage. The mobile device then transmits non-modulated sounding reference signals during a normal mode. A base station utilizes the modulated and non-modulated sounding reference signals to restore a downlink channel estimate employed in downlink precoding.
摘要翻译：描述了系统和方法，其有助于在时分双工或时分复用系统中基于上行链路探测信道测量和信道互易性来采用下行链路预编码。具体而言，提供了在用户设备天线配置包括不等数量的发射链和接收链的情况下实现下行链路预编码的机制。移动设备在校准阶段期间在每个天线上发送调制的探测参考信号。移动设备然后在正常模式期间发送未经调制的探测参考信号。基站利用已调制和未经调制的探测参考信号来恢复在下行链路预编码中采用的下行链路信道估计。

2. 发明申请

WO2009023863A1 METHOD AND APPARATUS FOR BEAMFORMING OF CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：无线通信系统中控制信息波束的方法和装置
公开(公告)号：WO2009023863A1
公开(公告)日：2009-02-19
申请号：PCT/US2008/073394
申请日：2008-08-15
申请人： QUALCOMM Incorporated , SARKAR, Sandip , KIM, Byoung-hoon , MALLADI, Durga Prasad , MONTOJO, Juan
发明人： SARKAR, Sandip , KIM, Byoung-hoon , MALLADI, Durga Prasad , MONTOJO, Juan
IPC分类号： H04B7/04
CPC分类号： H04B7/043 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L5/0023 , H04L5/0053 , H04L25/03343 , H04L2025/03426 , H04L2025/03802
摘要： Techniques for sending traffic data and control information in a wireless communication system are described. In one design, a transmitter (e.g., a Node B or a UE) may perform beamforming to send traffic data on M layers based on a precoding matrix, where M may be one or greater. The transmitter may also perform beamforming to send control information on up to M layers based on the same precoding matrix used for the traffic data. The transmitter may send the beamformed traffic data on a first physical channel and may send the beamformed control information on a second physical channel. The transmitter may multiplex the beamformed traffic data and the beamformed control information using time division multiplexing (TDM) or frequency division multiplexing (FDM).
摘要翻译：描述用于在无线通信系统中发送业务数据和控制信息的技术。在一种设计中，发射机（例如，节点B或UE）可以基于预编码矩阵来执行波束成形以在M层上发送业务数据，其中M可以是一个或更多个。发射机还可以基于用于业务数据的相同预编码矩阵来执行波束成形以发送多达M个层的控制信息。发射机可以在第一物理信道上发送波束形成的业务数据，并且可以在第二物理信道上发送波束形成的控制信息。发射机可以使用时分复用（TDM）或频分复用（FDM）来复用波束形成的业务数据和波束形成的控制信息。

3. 发明申请

WO2009023730A3 CODING AND MULTIPLEXING OF CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
公开(公告)号：WO2009023730A3
公开(公告)日：2009-02-19
申请号：PCT/US2008/073054
申请日：2008-08-13
申请人： QUALCOMM Incorporated , MALLADI, Durga Prasad , KIM, Byoung-hoon , MONTOJO, Juan , SARKAR, Sandip
发明人： MALLADI, Durga Prasad , KIM, Byoung-hoon , MONTOJO, Juan , SARKAR, Sandip
IPC分类号： H04L1/18 , H04L27/26 , H04L5/00
摘要： Techniques for sending control information in a wireless communication system are described. In an aspect, a UE spreads control information across frequency with a DFT and across time with an orthogonal sequence to obtain output data for the control information. In one design, the UE receives codewords for N HARQ processes in N downlink subframes, determines an ACK value for each HARQ process, codes N ACK values for the N HARQ processes to obtain ACK information, generates output data for the ACK information, and sends the output data in one of M uplink subframes. In another aspect, first control information is processed based on a first coding and multiplexing scheme utilizing code division multiplexing in time and frequency domains. Second control information is processed based on a second coding and multiplexing scheme utilizing code division multiplexing in time domain and spreading in frequency domain.

4. 发明申请

WO2009061960A1 METHOD FOR MAPPING CONTROL CHANNEL ELEMENTS TO RESOURCES FOR FREQUENCY DIVERSITY 审中-公开
标题翻译：用于将控制信道元素映射到频率多样性资源的方法
公开(公告)号：WO2009061960A1
公开(公告)日：2009-05-14
申请号：PCT/US2008/082690
申请日：2008-11-06
申请人： QUALCOMM Incorporated , GAAL, Peter , WEI, Yongbin , KIM, Byoung-hoon , MALLADI, Durga Prasad , MONTOJO, Juan
发明人： GAAL, Peter , WEI, Yongbin , KIM, Byoung-hoon , MALLADI, Durga Prasad , MONTOJO, Juan
IPC分类号： H04B7/12
CPC分类号： H04B7/12 , H03M13/2703 , H03M13/2742 , H03M13/2789 , H04L5/0007 , H04L5/0023 , H04L5/0037 , H04L5/0048 , H04L5/0053 , H04L5/0064 , H04L25/022 , H04L25/0226 , H04L25/0228
摘要： Aspects relate to a flexible interleaving scheme that provides frequency diversity to randomizes interference Frequency diversity groups can be utilized, wherein control channel elements (CCEs) gain greater frequency diversity for a given number of mini-CCEs (e.g., subset of CCEs). A frequency diversity group index is permuted according to a bit reversed scheme to facilitate control channel elements with a small number of mini-CCEs to also gain sufficient frequency diversity.
摘要翻译：方面涉及提供频率分集以使随机化干扰的灵活交错方案。可以利用频率分集组，其中控制信道单元（CCE）为给定数量的小型CCE（例如，CCE的子集）获得更大的频率分集。频率分集组索引根据比特反转方案进行置换，以便于具有少量mini-CCE的控制信道单元以获得足够的频率分集。

5. 发明申请

WO2008057899A3 REFERENCE SIGNAL DESIGN FOR CELL SEARCH IN AN ORTHOGONAL WIRELESS COMMUNICATION SYSTEM 审中-公开
公开(公告)号：WO2008057899A3
公开(公告)日：2008-05-15
申请号：PCT/US2007/083267
申请日：2007-10-31
申请人： QUALCOMM Incorporated , MONTOJO, Juan , KIM, Byoung-hoon , MALLADI, Durga Prasad , LUO, Tao
发明人： MONTOJO, Juan , KIM, Byoung-hoon , MALLADI, Durga Prasad , LUO, Tao
IPC分类号： H04B1/707 , H04L27/00 , H04J11/00
摘要： 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.

6. 发明申请

WO2008057898A2 METHOD AND APPARATUS FOR CELL SEARCH IN AN ORTHOGONAL WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：在正交无线通信系统中用于小区搜索的方法和设备
公开(公告)号：WO2008057898A2
公开(公告)日：2008-05-15
申请号：PCT/US2007/083265
申请日：2007-10-31
申请人： QUALCOMM Incorporated , MONTOJO, Juan , KIM, Byoung-hoon , MALLADI, Durga Prasad , LUO, Tao
发明人： MONTOJO, Juan , KIM, Byoung-hoon , MALLADI, Durga Prasad , LUO, Tao
IPC分类号： H04L27/26 , H04B1/707
CPC分类号： H04W48/16 , H04B2201/70701 , H04J11/0069 , H04L5/0023 , H04L5/0037 , H04L5/0048 , H04W48/08 , Y02D70/00 , Y02D70/1222 , Y02D70/1262 , Y02D70/25
摘要： Systems and methodologies are described that provide techniques for efficient cell search in a wireless communication system. In one aspect, a frequency reuse pattern can be generated by applying frequency shifts to reference signals transmitted from cells that provide coverage for a NodeB based on cell IDs or cell group IDs for the cells. The frequency shifts applied to reference signals can then be utilized as a basis for multiplexing reference signals from different cells using frequency division multiplexing (FDM) or a combination of FDM and other multiplexing techniques. Other adjustments to reference signals transmitted from respective cells, such as transmit power adjustments, can further be made to improve detection performance.
摘要翻译：描述了在无线通信系统中提供用于高效小区搜索的技术的系统和方法。在一个方面，频率再用模式可以通过将频率偏移应用于基于小区ID或小区组ID的小区发送的参考信号来提供对于节点B的覆盖。然后可以利用施加到参考信号的频移作为使用频分复用（FDM）或FDM和其他复用技术的组合来复用来自不同小区的参考信号的基础。还可以对从各个小区发送的参考信号进行其他调整，例如发送功率调整，以提高检测性能。

7. 发明申请

WO2007109679A2 UPLINK CHANNEL ESTIMATION USING A SIGNALING CHANNEL 审中-公开
标题翻译：上行链路信道估计使用信号信道
公开(公告)号：WO2007109679A2
公开(公告)日：2007-09-27
申请号：PCT/US2007/064426
申请日：2007-03-20
申请人： QUALCOMM Incorporated , KIM, Byoung-hoon , MALLADI, Durga, Prasad , XU, Hao
发明人： KIM, Byoung-hoon , MALLADI, Durga, Prasad , XU, Hao
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：描述了用于高效地获得上行链路信道估计而不消耗许多额外的上行链路资源的技术。每当UE期望在上行链路上发送数据时，用户设备（UE）可以在请求信道（REQCH）上发送对上行链路资源的请求。 UE可以在一组副载波上并且从多个天线发送REQCH，例如，在数据副载波上发送REQCH数据，并且在导频副载波上发送导频。节点B可以接收该请求，基于接收到的导频符号估计导频子载波的复信道增益，并且基于信道增益估计对接收到的数据符号进行相干解调。节点B可以基于解调的数据符号来估计数据副载波的复信道增益，并且基于针对导频和数据副载波的信道增益估计来导出每个UE天线的信道估计。节点B可以使用MIMO调度，子带调度和速率选择的信道估计。

8. 发明申请

WO2007112371A1 FEEDBACK OF CHANNEL STATE INFORMATION FOR MIMO AND SUBBAND SCHEDULING IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：无线通信系统中MIMO和子频带调度的信道状态信息反馈
公开(公告)号：WO2007112371A1
公开(公告)日：2007-10-04
申请号：PCT/US2007/064962
申请日：2007-03-26
申请人： QUALCOMM Incorporated , KIM, Byoung-hoon , MALLADI, Durga Prasad , DAMNJANOVIC, Jelena
发明人： KIM, Byoung-hoon , MALLADI, Durga Prasad , DAMNJANOVIC, Jelena
IPC分类号： H04L1/00 , H04L27/26 , H04B7/06
CPC分类号： H04L1/0026 , H04B7/0632 , H04B7/0641 , H04B7/066 , H04L1/0029 , H04L1/06 , H04L27/2608
摘要： 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.
摘要翻译：描述使用差分编码有效地发送信道状态信息的技术。差分编码可以跨越空间，跨频率，跨空间和频率跨越空间，频率和时间，或跨越一些其他维度组合来执行。在一种设计中，可以为多个子带上的多个空间信道确定空间状态信息。空间信道可以对应于不同的天线，不同的预编码向量等。可以为多个子带上的多个空间信道获得信道质量指示符（CQI）值。 CQI值可以在多个空间信道和多个子带之间进行差分编码，以获得差分CQI信息。在另一种设计中，可以在多个时间间隔中对多个子带上的多个空间信道获得CQI值，并且可以在空间，频率和时间之间进行差分编码。差分CQI信息和空间状态信息可以作为反馈发送。

9. 发明申请

WO2006084267A1 METHOD AND SYSTEM FOR CHANNEL EQUALIZATION 审中-公开
标题翻译：信道均衡的方法和系统
公开(公告)号：WO2006084267A1
公开(公告)日：2006-08-10
申请号：PCT/US2006/004248
申请日：2006-02-06
申请人： QUALCOMM INCORPORATED , MALLADI, Durga Prasad , KIM, Byoung-hoon , WEI, Yongbin
发明人： MALLADI, Durga Prasad , KIM, Byoung-hoon , WEI, Yongbin
IPC分类号： H04L25/03
CPC分类号： H04L25/03006 , H04L25/022 , H04L25/0228 , H04L2025/03375 , H04L2025/03783
摘要： One embodiment includes a method of receiving a transmitted signal. The method comprises receiving a signal transmitted over a channel. The signal comprises a known signal and an information signal. The method further includes determining at least one indicator of channel characteristics based at least in part on the portion of the known signal. The method further includes generating a first value indicative of the information signal based at least in part on the at least one indicator of the channel characteristics. The first value comprises an error signal. The method further comprises removing the error signal from the first estimate of the signal based at least in part on the portion of the known signal. Other embodiments include systems for performing the method and methods of making such systems.
摘要翻译：一个实施例包括接收发送信号的方法。该方法包括接收通过信道发送的信号。信号包括已知信号和信息信号。该方法还包括至少部分地基于已知信号的部分来确定信道特性的至少一个指示符。该方法还包括至少部分地基于信道特性的至少一个指示符来生成指示信息信号的第一值。第一个值包括一个误差信号。该方法还包括至少部分地基于已知信号的部分从信号的第一估计中去除误差信号。其他实施例包括用于执行制造这种系统的方法和方法的系统。

10. 发明申请

WO2009023850A1 UPLINK CONTROL CHANNEL FORMAT 审中-公开
标题翻译：上拉控制通道格式
公开(公告)号：WO2009023850A1
公开(公告)日：2009-02-19
申请号：PCT/US2008/073367
申请日：2008-08-15
申请人： QUALCOMM Incorporated , KIM, Byoung-hoon , MALLADI, Durga Prasad
发明人： KIM, Byoung-hoon , MALLADI, Durga Prasad
IPC分类号： H04L1/16 , H04L1/00
CPC分类号： H04L1/0026 , H04L1/003 , H04L1/1671 , H04L5/0023 , H04L5/0053 , H04L5/0057 , H04L25/03343 , H04L2025/03426 , H04L2025/03802
摘要： Systems and methodologies are described that facilitate encoding feedback or control information into a compact payload. In particular, a rank indicator, a precoding matrix indicator and channel quality indicators are packaged into a control channel payload that fits into a single sub-frame. The payload format is determined based at least in part on an antenna configuration or channel quality indicator granularity. In addition, hybrid automatic repeat requests can be included in the payload.
摘要翻译：描述了有助于将反馈或控制信息编码成紧凑的有效载荷的系统和方法。特别地，等级指示符，预编码矩阵指示符和信道质量指示符被封装成适合于单个子帧的控制信道有效载荷。至少部分地基于天线配置或信道质量指示符粒度确定有效载荷格式。此外，有效载荷中可以包含混合自动重复请求。

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