CHANNEL FEEDBACK BASED ON REFERENCE SIGNAL
    101.
    发明申请
    CHANNEL FEEDBACK BASED ON REFERENCE SIGNAL 有权
    基于参考信号的通道反馈

    公开(公告)号:US20120020230A1

    公开(公告)日:2012-01-26

    申请号:US13006216

    申请日:2011-01-13

    IPC分类号: H04L12/26

    摘要: Techniques for supporting channel measurement and reporting in a wireless communication system are described. In one design, a cell transmits a cell-specific reference signal (CRS) used for channel estimation and coherent demodulation and a channel spatial information reference signal (CSI-RS) used for channel measurement and channel feedback reporting. The cell may transmit the CSI-RS less frequently than the CRS, or from more antenna ports than the CRS, or on fewer resource elements than the CRS, or a combination thereof. In one design, a user equipment (UE) determines at least one bandwidth part configured for the UE, with each bandwidth part covering at least one subband. The UE receives the CRS and CSI-RS from the cell, determines channel feedback information for the at least one bandwidth part based on the CSI-RS, sends the channel feedback information to the cell, and receives data transmitted by the cell based on the channel feedback information.

    摘要翻译: 描述了在无线通信系统中支持信道测量和报告的技术。 在一种设计中,小区发送用于信道估计和相干解调的小区特定参考信号(CRS)以及用于信道测量和信道反馈报告的信道空间信息参考信号(CSI-RS)。 小区可以比CRS更频繁地发送CSI-RS,或者比比CRS更多的天线端口或比CRS更少的资源元素或其组合来发送CSI-RS。 在一种设计中,用户设备(UE)确定为UE配置的至少一个带宽部分,每个带宽部分覆盖至少一个子带。 UE从小区接收CRS和CSI-RS,基于CSI-RS确定至少一个带宽部分的信道反馈信息,向小区发送信道反馈信息,并接收基于小区的小区发送的数据 渠道反馈信息。

    MULTIPLEXING DEMODULATION REFERENCE SIGNALS IN WIRELESS COMMUNICATIONS
    102.
    发明申请
    MULTIPLEXING DEMODULATION REFERENCE SIGNALS IN WIRELESS COMMUNICATIONS 有权
    无线通信中的多路复用解调参考信号

    公开(公告)号:US20120014318A1

    公开(公告)日:2012-01-19

    申请号:US12987771

    申请日:2011-01-10

    IPC分类号: H04J11/00 H04L27/28

    摘要: Methods and apparatuses are provided for determining cyclic shift (CS) values and/or orthogonal cover codes (OCC) for a plurality of demodulation reference signals (DM-RS) transmitted over multiple layers in multiple-input multiple-output (MIMO) communications. A CS index can be received from a base station in downlink control information (DCI) or similar signaling. Based at least in part on the CS index, CS values for the plurality of DM-RSs can be determined. In addition, OCC can be explicitly signaled or similarly determined from the CS index and/or a configured CS value received from a higher layer. In addition, controlling assignment of CS indices and/or OCC can facilitate providing orthogonality for communications from paired devices in multiuser MIMO.

    摘要翻译: 提供了用于确定在多输入多输出(MIMO)通信中通过多层传输的多个解调参考信号(DM-RS)的循环移位(CS)值和/或正交覆盖码(OCC)的方法和装置。 可以在下行链路控制信息(DCI)或类似信令中从基站接收CS索引。 至少部分地基于CS索引,可以确定多个DM-RS的CS值。 另外,可以从CS索引和/或从较高层接收到的配置的CS值明确地发信号或类似地确定OCC。 此外,控制CS索引和/或OCC的分配可以有助于在多用户MIMO中为来自配对设备的通信提供正交性。

    Method and apparatus for hashing over multiple frequency bands in a communication system
    103.
    发明授权
    Method and apparatus for hashing over multiple frequency bands in a communication system 有权
    用于在通信系统中对多个频带进行散列的方法和装置

    公开(公告)号:US08095144B2

    公开(公告)日:2012-01-10

    申请号:US12707537

    申请日:2010-02-17

    IPC分类号: H04W72/00

    CPC分类号: H04W72/0453

    摘要: Method and apparatus for hashing mobile stations to frequencies in a communication system. The method uses two-level hashing to assign a mobile station first to a frequency band and then to a specific frequency within the frequency band. Embodiments allow for weights to be assigned to frequencies and mobiles hashed to the weighted frequencies. Weighting allows for a non-uniform distribution of mobile stations among frequencies to optimize system operating parameters.

    摘要翻译: 移动台将通信系统中的频率散列的方法和装置。 该方法使用两级哈希法将移动台首先分配给频带,然后分配给频带内的特定频率。 实施例允许将权重分配给频率并将移动台散列到加权频率。 加权允许移动站在频率之间的不均匀分布以优化系统操作参数。

    Channel estimation
    104.
    发明授权
    Channel estimation 有权
    频道估计

    公开(公告)号:US08094760B2

    公开(公告)日:2012-01-10

    申请号:US12191427

    申请日:2008-08-14

    IPC分类号: H04B1/10

    摘要: Aspects describe channel estimation in an OFDM system. Baseline DFT-based channel estimation can be performed and scaling can be applied to mitigate distortion in the DFT-based estimations. In some aspects, baseline DFT-based channel estimation can be performed and tones for which DFT-based estimate is deemed unreliable can have MMSE based processing applied locally. If orthogonal sequence is deemed excessive, orthogonal sequence cancellation can be applied prior to the MMSE based processing.

    摘要翻译: 方面描述OFDM系统中的信道估计。 可以执行基于基于DFT的信道估计,并且可以应用缩放来减轻基于DFT的估计中的失真。 在一些方面,可以执行基于基于DFT的信道估计,并且基于DFT的估计被认为不可靠的音调可以在本地应用基于MMSE的处理。 如果认为正交序列过大,则可以在基于MMSE的处理之前应用正交序列消除。

    DEMODULATION REFERENCE SIGNALS FOR RETRANSMISSION IN WIRELESS COMMUNICATION
    105.
    发明申请
    DEMODULATION REFERENCE SIGNALS FOR RETRANSMISSION IN WIRELESS COMMUNICATION 有权
    用于无线通信恢复的解调参考信号

    公开(公告)号:US20110317646A1

    公开(公告)日:2011-12-29

    申请号:US13171270

    申请日:2011-06-28

    IPC分类号: H04W72/06

    摘要: Provided is a method for wireless communication which includes transmitting codewords according to an initial transmission rank, receiving downlink transmissions indicating at least one of the codewords to be retransmitted, constructing a demodulation reference signal (DM-RS) to be sent with the at least one codeword to be retransmitted, and retransmitting the at least one codeword with the DM-RS according to a retransmission rank. The downlink transmissions may include one or more physical hybrid automatic retransmission request indicator channels and the DM-RS may be constructed based at least in part on information in the downlink transmissions.

    摘要翻译: 提供了一种用于无线通信的方法,其包括根据初始传输秩发送码字,接收指示要重传的码字中的至少一个的下行链路传输,构建要与所述至少一个发送的解调参考信号(DM-RS)一起发送 要发送的码字,以及根据重传等级,用DM-RS重发所述至少一个码字。 下行链路传输可以包括一个或多个物理混合自动重发请求指示符信道,并且可以至少部分地基于下行链路传输中的信息来构建DM-RS。

    QOS-BASED POWER CONTROL IN AGGREGATED CARRIER COMMUNICATION SYSTEMS
    106.
    发明申请
    QOS-BASED POWER CONTROL IN AGGREGATED CARRIER COMMUNICATION SYSTEMS 有权
    集群载波通信系统中基于QOS的功率控制

    公开(公告)号:US20110286391A1

    公开(公告)日:2011-11-24

    申请号:US13110751

    申请日:2011-05-18

    IPC分类号: H04W52/26

    摘要: A user equipment (UE) is configured for carrier aggregation in a wireless communication system. The UE selects control information to be transmitted in an uplink control channel format in a component carrier of two or more component carriers, where the control information includes information types associated with different information reliability requirements. The UE generates an open-loop power control parameter and/or a closed-loop power control parameter based on the information types. The UE transmits the control information in the uplink control channel format at a power level determined by the open-loop power control parameter and/or the closed-loop power control parameter.

    摘要翻译: 用户设备(UE)被配置用于无线通信系统中的载波聚合。 UE在两个或多个分量载波的分量载波中选择要以上行链路控制信道格式发送的控制信息,其中控制信息包括与不同信息可靠性要求相关联的信息类型。 UE基于信息类型生成开环功率控制参数和/或闭环功率控制参数。 UE以由开环功率控制参数和/或闭环功率控制参数确定的功率电平发送上行链路控制信道格式的控制信息。

    Power control with cross-subframe assignment
    107.
    发明申请
    Power control with cross-subframe assignment 有权
    具有跨子帧分配的功率控制

    公开(公告)号:US20110274064A1

    公开(公告)日:2011-11-10

    申请号:US13103843

    申请日:2011-05-09

    IPC分类号: H04W52/04 H04W72/04

    摘要: A method includes receiving a cross-subframe assignment in a first subframe, targeting a second subframe in which a transmission power control (TPC) command is to be applied. The method may also include adjusting transmit power in accordance with the TPC command during a third subframe, a predefined number of subframes after the first subframe. Another method includes receiving a cross-subframe assignment in a first subframe. The cross-subframe assignment targets a second subframe in which a first TPC command is to be applied. The method may also include receiving a nominal grant in the first subframe that targets an identified subframe to which a second TPC command is to be applied. The method may also include adjusting the transmit power according to the first TPC command, the second TPC command or a function of the first TPC command and the second TPC command during the second subframe or the identified subframe.

    摘要翻译: 一种方法包括在第一子帧中接收跨子帧分配,针对要应用发送功率控制(TPC)命令的第二子帧。 该方法还可以包括在第三子帧期间根据TPC命令调整发射功率,在第一子帧之后调整预定数量的子帧。 另一种方法包括在第一子帧中接收跨子帧分配。 跨子帧分配针对要应用第一TPC命令的第二子帧。 该方法还可以包括在第一子帧中接收目标要应用第二TPC命令的所识别的子帧的标称许可。 该方法还可以包括在第二子帧或所识别的子帧期间根据第一TPC命令,第二TPC命令或第一TPC命令的功能和第二TPC命令调整发射功率。

    METHOD AND APPARATUS FOR CONTROL AND DATA MULTIPLEXING IN WIRELESS COMMUNICATION
    109.
    发明申请
    METHOD AND APPARATUS FOR CONTROL AND DATA MULTIPLEXING IN WIRELESS COMMUNICATION 有权
    无线通信中控制和数据多路复用的方法与装置

    公开(公告)号:US20110268080A1

    公开(公告)日:2011-11-03

    申请号:US13099210

    申请日:2011-05-02

    IPC分类号: H04W72/06

    CPC分类号: H04L5/0053

    摘要: A method of wireless communication includes determining a number of symbols for uplink control information (UCI) on each of a plurality of layers, multiplexing symbols for the UCI with data on multiple layers such that the symbols are time aligned across the layers, and sending the multiplexed symbols on the multiple layers on uplink. In some designs, the number of symbols for the UCI may be determined based on a spectral resource parameter.

    摘要翻译: 一种无线通信方法包括:在多个层中的每个层上确定用于上行链路控制信息(UCI)的符号数目,将多个符号用于多层的数据复用多个符号,使得符号在层间进行时间对齐,并发送 上行链路上多层的多路复用符号。 在一些设计中,可以基于频谱资源参数来确定UCI的符号数。