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11. 发明申请

WO2008033985A2 BEACON ASSISTED CELL SEARCH IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：无线通信系统中的信号辅助小区搜索
公开(公告)号：WO2008033985A2
公开(公告)日：2008-03-20
申请号：PCT/US2007/078369
申请日：2007-09-13
申请人： QUALCOMM INCORPORATED , MALLADI, Durga Prasad , MONTOJO, Juan , LI, Junyi , KIM, Byoung-Hoon
发明人： MALLADI, Durga Prasad , MONTOJO, Juan , LI, Junyi , KIM, Byoung-Hoon
IPC分类号： H04W48/12 , H04W48/16
CPC分类号： H04W56/001 , H04B1/713 , H04J11/0069 , H04L5/0023 , H04L5/0048 , H04L5/0053 , H04L5/0064 , H04L27/2656 , H04W48/12 , H04W48/16
摘要： Techniques for transmitting synchronization signals to assist user equipments (UEs) perform cell searches are described. In one design, a base station for a cell may generate and transmit a primary synchronization signal and a secondary synchronization signal, which may be used by the UEs for initial cell search at power up. The base station may also generate and transmit one or more beacon signals, which may be used by the UEs for neighbor cell search to detect for neighbor cells. The number of beacon signals to transmit and the set of subcarriers usable for each beacon signal may be determined based on the system bandwidth. Each beacon signal may be mapped to one subcarrier in the set of subcarriers in each beacon symbol period. This one subcarrier may be determined based on a beacon hopping pattern or a beacon code and may be dependent on a cell identifier (ID).
摘要翻译：描述用于发送同步信号以辅助用户设备（UE）执行小区搜索的技术。在一种设计中，用于小区的基站可以生成并发送主同步信号和辅同步信号，UE可以在加电时用于初始小区搜索。基站还可以生成和发送一个或多个信标信号，其可以由UE用于相邻小区搜索以检测相邻小区。可以基于系统带宽来确定要发送的信标信号的数量和可用于每个信标信号的子载波的集合。每个信标信号可以被映射到每个信标符号周期中的子载波集合中的一个子载波。可以基于信标跳变模式或信标代码来确定该一个子载波，并且可以依赖于小区标识符（ID）。

12. 发明申请

WO2007109630A1 GROUPING OF USERS FOR MIMO TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：用于无线通信系统中的MIMO传输的用户分组
公开(公告)号：WO2007109630A1
公开(公告)日：2007-09-27
申请号：PCT/US2007/064329
申请日：2007-03-19
申请人： QUALCOMM INCORPORATED , KIM, Byoung-Hoon , MALLADI, Durga Prasad
发明人： KIM, Byoung-Hoon , MALLADI, Durga Prasad
IPC分类号： H04L1/00
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/0632 , H04B7/0665 , H04L1/0002 , H04L1/0009 , H04L1/0015 , H04L1/002 , H04L1/0025 , H04L1/0026 , H04L1/0035 , H04L1/06
摘要： 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.
摘要翻译：描述了支持MIMO传输的技术。用户设备（UE）被分类为要单独调度的第一组UE和可以一起调度的第二组UE。分类可以基于发射和接收天线的数量，扇区负载，数据需求，长期信道统计，UE的数量等。从UE接收的信道质量指示符（CQI）信息以不同的方式被解释，这取决于在UE所属的组上。可以从第一组一次选择单个UE，或者可以从第二组一次选择多个UE进行MIMO传输。可以基于CQI信息选择的速率将MIMO传输发送到第一组中的单个UE或第二组中的多个UE。

13. 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。

14. 发明申请

WO2008098221A1 USING CODEWORDS IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：在无线通信系统中使用编码
公开(公告)号：WO2008098221A1
公开(公告)日：2008-08-14
申请号：PCT/US2008/053504
申请日：2008-02-08
申请人： QUALCOMM Incorporated , KIM, Byoung-hoon , MALLADI, Durga Prasad , DOAN, Dung N.
发明人： KIM, Byoung-hoon , MALLADI, Durga Prasad , DOAN, Dung N.
IPC分类号： H04Q7/38
CPC分类号： H04W28/18 , H04L1/001 , H04L1/0033 , H04L1/0072 , H04L1/0079 , H04L1/06 , H04L5/0007 , H04L27/2601
摘要： Systems, methodologies, and devices are described that can facilitate bandwidth efficient non-coherent signaling for uplink control channel transmissions. A communication device (e.g., a mobile device, base station) can be configured to utilize or generate a set of complex orthogonal codewords to facilitate transmission of control channel information using non-coherent signaling in a bandwidth efficient manner. A complex orthogonal codeword set can comprise a first subset of codewords where such codewords have a desirable cross-correlation property and another subset(s) of codewords that can include expurgated codewords, where the expurgated codewords can include discarded codewords and/or codeword pairs that produce a worst-case cross-correlation property. The codeword set and subsets are determined based at least in part on a predefined codeword criterion. A portion of the discarded codewords can be used for other purposes, such as erasure decoding, interference-level estimation, and/or multi-mode control channel operation.
摘要翻译：描述了可以促进用于上行链路控制信道传输的带宽有效的非相干信令的系统，方法和设备。通信设备（例如，移动设备，基站）可以被配置为利用或生成一组复杂的正交码字，以便以带宽有效的方式使用非相干信令来传输控制信道信息。复数正交码字集合可以包括这样的码字的第一子集，其中这些码字具有期望的互相关属性，并且另一个码字子集可以包括被排除的码字，其中被排除的码字可以包括丢弃的码字和/或码字对，产生最坏情况的互相关属性。至少部分地基于预定义的码字标准来确定码字集合和子集。丢弃的码字的一部分可以用于其它目的，例如擦除解码，干扰电平估计和/或多模式控制信道操作。

15. 发明申请

WO2008086481A1 TRANSMISSION OF INFORMATION USING CYCLICALLY SHIFTED SEQUENCES 审中-公开
标题翻译：使用周期性转换序列传输信息
公开(公告)号：WO2008086481A1
公开(公告)日：2008-07-17
申请号：PCT/US2008/050779
申请日：2008-01-10
申请人： QUALCOMM Incorporated , MALLADI, Durga Prasad , KIM, Byoung-Hoon
发明人： MALLADI, Durga Prasad , KIM, Byoung-Hoon
IPC分类号： H04J11/00 , H04L27/26
CPC分类号： H04L27/2613 , H04J13/0074 , H04J13/10 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0072 , H04L1/1607 , H04L1/1671 , H04L5/023 , H04W72/0406
摘要： Techniques for transmitting information using cyclically shifted sequences are described. In one design, first and second sequences may be generated by cyclically shifting a base sequence by first and second amounts, respectively. The base sequence may be a CAZAC sequence, a PN sequence, or some other sequence having good correlation properties. The cyclic shifts for the first and second sequences may be determined based on a hopping pattern. A first modulated sequence may be generated based on the first sequence and a first modulation symbol and may be sent in a first time interval. A second modulated sequence may be generated based on the second sequence and a second modulation symbol and may be sent in a second time interval. Each modulated sequence may be sent on K consecutive subcarriers using localized frequency division multiplexing (LFDM)
摘要翻译：描述了使用循环移位序列发送信息的技术。在一种设计中，可以通过分别将碱基序列循环移位第一和第二量来产生第一和第二序列。碱基序列可以是CAZAC序列，PN序列或具有良好相关性质的一些其它序列。可以基于跳频图案来确定第一和第二序列的循环移位。可以基于第一序列和第一调制符号来生成第一调制序列，并且可以在第一时间间隔中发送第一调制序列。可以基于第二序列和第二调制符号来生成第二调制序列，并且可以在第二时间间隔中发送第二调制序列。每个调制序列可以使用局部频分复用（LFDM）在K个连续子载波上发送，

16. 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.

17. 发明申请

WO2006105309A1 METHOD AND APPARATUS FOR BLOCK-WISE DECISION-FEEDBACK EQUALIZATION FOR WIRELESS COMMUNICATION 审中-公开
标题翻译：用于无线通信的块式决策反馈均衡的方法和装置
公开(公告)号：WO2006105309A1
公开(公告)日：2006-10-05
申请号：PCT/US2006/011670
申请日：2006-03-29
申请人： QUALCOMM INCORPORATED , WEI, Yongbin , KIM, Byoung-Hoon , MALLADI, Durga Prasad
发明人： WEI, Yongbin , KIM, Byoung-Hoon , MALLADI, Durga Prasad
IPC分类号： H04L25/03
CPC分类号： H04L25/03063 , H04L25/03057 , H04L25/03159
摘要： Techniques for performing decision feedback equalization are described. A feed-forward filter response and a feedback filter response are derived based on a channel estimate and a reliability parameter and further without constraint on the feedback filter response or with a constraint of no feedback for an on-time sample. The reliability parameter is indicative of the reliability of the feedback used for equalization and may be frequency dependent or frequency invariant. Different feed-forward and feedback filter responses may be derived with different constraints on the feedback filter and different assumptions for the reliability parameter. Equalization is performed with the feed-forward and feedback filter responses. If equalization is performed for multiple iterations then, for each iteration, the reliability parameter may be updated, the feed-forward and feedback filter responses may be derived based on the updated reliability parameter, and equalization may be performed with the filter responses for the iteration.
摘要翻译：描述用于执行判决反馈均衡的技术。基于信道估计和可靠性参数导出前馈滤波器响应和反馈滤波器响应，并且进一步而不受反馈滤波器响应的约束或者对于准时采样没有反馈的约束。可靠性参数表示用于均衡的反馈的可靠性，并且可以是频率依赖的或频率不变的。不同的前馈和反馈滤波器响应可以通过反馈滤波器的不同约束和可靠性参数的不同假设得出。使用前馈和反馈滤波器响应执行均衡。如果对多次迭代执行均衡，那么对于每个迭代，可以更新可靠性参数，可以基于更新的可靠性参数导出前馈和反馈滤波器响应，并且可以用迭代的滤波器响应来执行均衡。

18. 发明申请

WO2008008748A2 FREQUENCY HOPPING IN AN SC-FDMA ENVIRONMENT 审中-公开
标题翻译： SC-FDMA环境下的频率跳跃
公开(公告)号：WO2008008748A2
公开(公告)日：2008-01-17
申请号：PCT/US2007/073112
申请日：2007-07-10
申请人： QUALCOMM Incorporated , MALLADI, Durga Prasad , KIM, Byoung-Hoon
发明人： MALLADI, Durga Prasad , KIM, Byoung-Hoon
CPC分类号： H04L27/2602 , H04B1/7143 , H04B7/2615
摘要： Facilitating frequency hopping for single carrier, frequency division multiple access (SC-FDMA) transmission is described herein. By way of example, user data transmitted within a transmission allocation unit can be frequency shifted with respect to time based slots of the allocation unit. As a result, frequency hopping can be accomplished while preserving single carrier constraints and a low peak to average power ratio (PAPR). Furthermore, various frequency shifted mechanisms are disclosed to accomplish preservation of single carrier restraints. For example, a scheduler can select between cyclic frequency shifting, transposed frequency shifting, and multiplexing of frequency selective scheduled and frequency hopped data based on an audit of scheduled data for the transmission allocation unit. As a result, the reduction in interference achieved through frequency hopping can be combined with the low PAPR for various data allocation configurations.
摘要翻译：本文描述了用于单载波频分多址（SC-FDMA）传输的促进跳频。作为示例，在传输分配单元内传输的用户数据可以相对于分配单元的基于时间的时隙进行频移。结果，可以在保持单载波约束和低峰均功率比（PAPR）的同时完成跳频。此外，公开了各种频移机构来完成单载波约束的保存。例如，调度器可以基于对传输分配单元的调度数据的审计在循环频移，转置频移和频率选择性调度和跳频数据的复用之间进行选择。因此，通过跳频实现的干扰减少可以与用于各种数据分配配置的低PAPR相结合。

19. 发明申请

WO2007092945A3 SPECTRAL SHAPING TO REDUCE PEAK-TO-AVERAGE RATIO IN WIRELESS COMMUNICATION 审中-公开
公开(公告)号：WO2007092945A3
公开(公告)日：2007-08-16
申请号：PCT/US2007/061884
申请日：2007-02-08
申请人： QUALCOMM INCORPORATED ATTN; INTERNATIONAL IP ADMINISTRATION , KIM, Byoung-Hoon , MALLADI, Durga Prasad
发明人： KIM, Byoung-Hoon , MALLADI, Durga Prasad
IPC分类号： H04L27/26
摘要： Techniques for performing spectral shaping to achieve a desired peak-to- average ratio (PAR) are described. Spectral shaping may be selectively performed for a single-carrier frequency division multiplexing (SC-FDM) signal based on one or more criteria, e.g., in transmit power limited conditions and/or if a modulation scheme with lower PAR is unavailable. At least one parameter of a window function or spectral shaping filter may also be adjusted based on at least one characteristic of the SC-FDM signal. For example, the roll-off of the spectral shaping filter may be adjusted based on the modulation scheme and/or the number of subcarriers used for the SC-FDM signal. A transmitter may perform spectral shaping on modulation symbols, if enabled, to obtain spectrally shaped symbols. Spectral shaping may be performed in the frequency domain either within an allocated bandwidth or with bandwidth expansion. The SC- FDM signal may be generated based on the spectrally shaped symbols.

20. 发明申请

WO2006127119A2 METHOD AND APPARATUS FOR EQUALIZATION CONTROL 审中-公开
标题翻译：用于均衡控制的方法和装置
公开(公告)号：WO2006127119A2
公开(公告)日：2006-11-30
申请号：PCT/US2006/011649
申请日：2006-03-28
申请人： QUALCOMM INCORPORATED , KIM, Byoung-Hoon , MALLADI, Durga Prasad , WEI, Yongbin
发明人： KIM, Byoung-Hoon , MALLADI, Durga Prasad , WEI, Yongbin
IPC分类号： H04L25/03
CPC分类号： H04L25/03038 , H04L25/03057 , H04L2025/03573
摘要： An equalization filter is provided with the ability to softly switch between pure linear equalization and decision feedback equalization. A reliability gain factor and an associated gain factor calculated by a predetermined mapping relation are provided in a decision feedback path and a feedforward path, respectively. Increasing the reliability gain factor increases the significance of the decision feedback filtering. Better performance than pure linear equalization and pure decision feedback equalization can be achieved.
摘要翻译：均衡滤波器具有在纯线性均衡和判决反馈均衡之间软切换的能力。分别在判定反馈路径和前馈路径中提供通过预定映射关系计算的可靠性增益因子和相关联的增益因子。增加可靠性增益因子增加了决策反馈滤波的意义。可以实现比纯线性均衡和纯决策反馈均衡更好的性能。

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