专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 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。

52. 发明申请

WO2007127945A2 METHOD AND APPARATUS FOR ENHANCED PAGING 审中-公开
标题翻译：用于增强寻呼的方法和装置
公开(公告)号：WO2007127945A2
公开(公告)日：2007-11-08
申请号：PCT/US2007/067682
申请日：2007-04-27
申请人： QUALCOMM Incorporated , MONTOJO, Juan , MALLADI, Durga Prasad
发明人： MONTOJO, Juan , MALLADI, Durga Prasad
IPC分类号： H04Q7/38
CPC分类号： H04L5/0091 , H04L5/0007 , H04L5/0053 , H04L5/006 , H04L5/0064 , H04L25/03866 , H04W68/025
摘要： Techniques for paging user equipments (UEs) in a wireless communication system are described. In one aspect, a cell sends a paging indicator to a UE, monitors for an acknowledgement from the UE, and sends a page message to the UE if an acknowledgement is received from the UE. The cell may receive channel quality information from the UE and may send the page message with link adaptation and/or HARQ to improve performance. In another aspect, a cell sends a paging indicator on a shared control channel to a UE and sends a page message on a shared data channel to the UE. The paging indicator and page message may be sent from multiple cells to the UE. Alternatively, the paging indicator may be sent from multiple cells to the UE, and the page message may be sent from a single cell to the UE.
摘要翻译：描述了无线通信系统中的寻呼用户设备（UE）的技术。一方面，小区向UE发送寻呼指示符，监视来自UE的确认，并且如果从UE接收到确认，则向UE发送寻呼消息。小区可以从UE接收信道质量信息，并且可以发送具有链路适配和/或HARQ的寻呼消息以提高性能。另一方面，小区在共享控制信道上发送寻呼指示符给UE，并在共享数据信道上向UE发送寻呼消息。寻呼指示符和寻呼消息可以从多个小区发送到UE。或者，寻呼指示符可以从多个小区发送到UE，并且寻呼消息可以从单个小区发送到UE。

53. 发明申请

WO2007127800A2 ENHANCED MOBILITY SUPPORT FOR WIRELESS COMMUNICATION 审中-公开
标题翻译：增强无线通信的移动性支持
公开(公告)号：WO2007127800A2
公开(公告)日：2007-11-08
申请号：PCT/US2007/067419
申请日：2007-04-25
申请人： QUALCOMM Incorporated , FLORE, Oronzo , MALLADI, Durga Prasad , CHAPONNIERE, Etienne F. , GRILLI, Francesco
发明人： FLORE, Oronzo , MALLADI, Durga Prasad , CHAPONNIERE, Etienne F. , GRILLI, Francesco
IPC分类号： H04W36/00 , H04W36/18 , H04W56/00 , H04W76/02 , H04W76/04 , H04W88/02
CPC分类号： H04W56/0045 , H04W36/0055
摘要： Techniques for quickly and efficiently performing handover are described. A user equipment (UE) may maintain a link with a serving cell and may communicate with this cell via the established link. The UE may have a candidate set of non-serving cells that are candidates for handover. The UE may maintain uplink synchronization with one or more non-serving cells in the candidate set, without having to maintain links with any of the non-serving cells. The UE may update uplink synchronization with the non-serving cells via an access procedure, e.g., send access probes to the non-serving cells and receive timing adjustments from these cells. One non-serving cell with which the UE has maintained uplink synchronization may be selected as a target cell for handover. The UE may then perform handover from the serving cell to the target cell, without performing uplink synchronization during the handover, which may improve handover latency and success rate.
摘要翻译：描述用于快速和有效地执行切换的技术。用户设备（UE）可以维护与服务小区的链路，并且可以经由建立的链路与该小区通信。 UE可以具有作为切换候选的非服务小区的候选集合。 UE可以维护候选集中的一个或多个非服务小区的上行链路同步，而不必维护与任何非服务小区的链路。 UE可以经由接入过程来更新与非服务小区的上行链路同步，例如，向非服务小区发送接入探测，并从这些小区接收定时调整。 UE可以选择保持上行链路同步的一个非服务小区作为切换目标小区。然后，UE可以执行从服务小区到目标小区的切换，而不需要在切换期间执行上行链路同步，这可以提高切换等待时间和成功率。

54. 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.

55. 发明申请

WO2007092896A3 AN APPARATUS AND METHOD FOR FAST ACCESS IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
公开(公告)号：WO2007092896A3
公开(公告)日：2007-08-16
申请号：PCT/US2007/061793
申请日：2007-02-07
申请人： QUALCOMM INCORPORATED , DAMNJANOVIC, Aleksandar , MALLADI, Durga Prasad , MONTOJO, Juan
发明人： DAMNJANOVIC, Aleksandar , MALLADI, Durga Prasad , MONTOJO, Juan
IPC分类号： H04L12/56 , H04L12/28
摘要： Systems and methodologies are described that facilitate a fast access in a wireless communication system, such as OFDMA. According to various aspects, the system and methods are described for generating an access probe comprising an access signature having quality of service information and transmitting the access probe on a random access channel. Also, the system and methods of receiving an access probe, the access probe comprising quality of service information, generating an access grant in response to the receive access probe, addressing the access grant using information from the access probe, and transmitting the access grant.

56. 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。

57. 发明申请

WO2006116704A2 TRANSMIT FORMAT SELECTION WITH CONSIDERATION FOR RESOURCE REUSE 审中-公开
标题翻译：发送格式选择考虑资源重用
公开(公告)号：WO2006116704A2
公开(公告)日：2006-11-02
申请号：PCT/US2006/016301
申请日：2006-04-25
申请人： QUALCOMM INCORPORATED , KIM, Byoung-Hoon , MALLADI, Durga Prasad , SARKAR, Sandip
发明人： KIM, Byoung-Hoon , MALLADI, Durga Prasad , SARKAR, Sandip
IPC分类号： H04L1/00
CPC分类号： H04L1/0036 , H04L1/0003 , H04L1/0007 , H04L1/0009 , H04L1/0026 , H04L1/0034 , H04L1/16 , H04L5/0007 , H04L5/0016 , H04L5/0023 , H04L5/0028 , H04L5/0037 , H04L5/006
摘要： Techniques for selecting transmit formats in a manner to account for the degrees of resource reuse for multiple data streams sent simultaneously from multiple antennas are described. The degree of resource reuse for each data stream indicates the amount of reuse of resources (e.g., orthogonal codes or subcarriers) observed by that stream. Interference estimates for the multiple data streams are derived based on an initial resource assignment. The degrees of resource reuse are determined based on the interference estimates and are used to derive at least one correction factor. At least one transmit format is then selected for the data streams using the at least one correction factor. Each data stream is associated with a transmit format that indicates the amount of resources to use for the data stream and other parameters. Resources are assigned to each data stream in accordance with its transmit format.
摘要翻译：描述了以考虑从多个天线同时发送的多个数据流的资源重用程度来选择发送格式的技术。每个数据流的资源重用程度指示由该流观察到的资源（例如，正交码或子载波）的重用量。基于初始资源分配导出多个数据流的干扰估计。基于干扰估计来确定资源重用度，并且用于导出至少一个校正因子。然后使用至少一个校正因子为数据流选择至少一个发送格式。每个数据流与指示用于数据流的资源量和其他参数的发送格式相关联。根据其发送格式将资源分配给每个数据流。

58. 发明申请

WO2006105333A1 HSDPA SYSTEM WITH REDUCED INTER-USER INTERFERENCE 审中-公开
标题翻译： HSDPA系统具有减少的用户间干扰
公开(公告)号：WO2006105333A1
公开(公告)日：2006-10-05
申请号：PCT/US2006/011745
申请日：2006-03-31
申请人： QUALCOMM Incorporated , MALLADI, Durga Prasad , GAAL, Peter , WEI, Yongbin
发明人： MALLADI, Durga Prasad , GAAL, Peter , WEI, Yongbin
IPC分类号： H04L1/00 , H04L25/03
CPC分类号： H04L1/0029 , H04L1/0003 , H04L1/0025
摘要： In a wireless network (100) with HSDPA-enabled user equipment devices (130), the base transceiver station (120) transmits to each HSDPA-enabled UE information regarding allocation of HSDPA codes and associated modulation techniques for other HSDPA-enabled UEs. Using this additional control information, each UE configures decision feedback filter of its equalizer to reduce inter-user interference. The additional control information may be transmitted in a packet (300) that includes a CRC portion (310) with the packet's CRC masked by a common ID, which is known to the HSDPA-enabled UEs. To reduce the number of bits needed to transmit the additional control information, the HSDPA codes used with a particular modulation technique are allocated consecutively. For each modulation technique, only the beginning code and the total number of codes need be known to the UEs. The number of codes used with each modulation technique may be allowed to change once in several TTIs.
摘要翻译：在具有支持HSDPA的用户设备（130）的无线网络（100）中，基站收发器（120）向支持HSDPA的每个UE发送关于其他支持HSDPA的UE的HSDPA代码分配和相关调制技术的信息。使用该附加控制信息，每个UE配置其均衡器的判决反馈滤波器以减少用户间干扰。附加控制信息可以在包括CRC部分（310）的分组（300）中发送，其中分组的CRC由公共ID掩蔽，这是启用HSDPA的UE已知的。为了减少发送附加控制信息所需的比特数，与特定调制技术一起使用的HSDPA码被连续分配。对于每个调制技术，只有起始码和代码总数需要为UE所知。可以允许每个调制技术使用的代码数量在几个TTI中改变一次。

59. 发明申请

WO2006105307A1 METHOD AND APPARATUS FOR DATA AND PILOT STRUCTURES SUPPORTING EQUALIZATION 审中-公开
标题翻译：数据和引导结构的方法和装置支持均衡
公开(公告)号：WO2006105307A1
公开(公告)日：2006-10-05
申请号：PCT/US2006/011668
申请日：2006-03-29
申请人： QUALCOMM INCORPORATED , MALLADI, Durga Prasad , GAAL, Peter , WEI, Yongbin
发明人： MALLADI, Durga Prasad , GAAL, Peter , WEI, Yongbin
IPC分类号： H04L25/02 , H04L27/26
CPC分类号： H04L25/03159 , H04B2201/70701 , H04L25/0204 , H04L25/0224 , H04L25/03012 , H04L27/2602 , H04L27/2607 , H04L27/261 , H04L2025/03414 , H04W48/08 , H04W52/58 , H04W72/00 , H04W74/04
摘要： Techniques for transmitting data in a manner to facilitate equalization at a receiver are described. Guard intervals are appended to data blocks such that each data block has a guard interval at the beginning of the data block and a guard interval at the end of the data block. Each guard interval may be discontinuous transmission (DTX), a polyphase sequence, or some other known sequence. Pilot is appended to each set of at least one data block. The data blocks, pilot, and guard intervals may be sent using various slot structures and are processed for transmission. The processing may include mapping the data blocks to at least one physical channel, channelizing the data blocks for each physical channel with a channelization code, combining all physical channels, and scrambling the combined data, pilot, and guard intervals with a scrambling code.
摘要翻译：描述了以便于在接收机处均衡的方式发送数据的技术。保护间隔被附加到数据块，使得每个数据块在数据块的开始处具有保护间隔，并且在数据块的末尾具有保护间隔。每个保护间隔可以是不连续传输（DTX），多相序列或一些其他已知序列。导频被附加到每组至少一个数据块。数据块，导频和保护间隔可以使用各种时隙结构发送，并被处理以进行传输。该处理可以包括将数据块映射到至少一个物理信道，通过信道化码信道化每个物理信道的数据块，组合所有物理信道，以及用加扰码对组合的数据，导频和保护间隔进行加扰。

60. 发明申请

WO2006086786A1 SELECTION OF A THRESHOLDING PARAMETER FOR CHANNEL ESTIMATION 审中-公开
标题翻译：选择通道估计的阈值参数
公开(公告)号：WO2006086786A1
公开(公告)日：2006-08-17
申请号：PCT/US2006/005185
申请日：2006-02-13
申请人： QUALCOMM INCORPORATED , STAMOULIS, Anastasios , MALLADI, Durga Prasad
发明人： STAMOULIS, Anastasios , MALLADI, Durga Prasad
IPC分类号： H04L25/02
CPC分类号： H04L27/2647 , H04L25/0204 , H04L25/0212 , H04L25/0228 , H04L25/025 , H04L25/0256 , H04L25/0258 , H04L27/261
摘要： Techniques for deriving a high quality channel estimate are described. A first channel impulse response estimate (CIRE) having multiple channel taps is derived, e.g., by filtering initial CIREs obtained from a received pilot. A threshold parameter value is selected based on at least one criterion, which may relate to channel profile, operating SNR, number of channel taps, and so on. A second CIRE is derived by zeroing out selected ones of the channel taps in the first CIRE based on the threshold parameter value. The average energy of the channel taps may be determined, a threshold may be derived based on the average energy and the threshold parameter value, and channel taps with energy less than the threshold may be zeroed out. A memory may store threshold parameter values for different operating scenarios, and a stored value may be selected for use based on the current operating scenario.
摘要翻译：描述用于导出高质量信道估计的技术。具有多信道抽头的第一信道脉冲响应估计（CIRE）被导出，例如通过对从接收到的导频获得的初始CIRE进行滤波。基于至少一个标准来选择阈值参数值，其可以涉及信道简档，操作SNR，信道抽头数等。基于阈值参数值，通过对第一CIRE中的选通信道抽头进行归零而得到第二CIRE。可以确定通道抽头的平均能量，可以基于平均能量和阈值参数值导出阈值，并且可以将能量小于阈值的通道抽头清零。存储器可以存储不同操作场景的阈值参数值，并且可以基于当前操作场景选择使用存储的值。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式