CHANNEL STATE INFORMATION COMPUTATION FOR ENHANCED INTER-CELL INTERFERENCE COORDINATION
    32.
    发明申请
    CHANNEL STATE INFORMATION COMPUTATION FOR ENHANCED INTER-CELL INTERFERENCE COORDINATION 审中-公开
    通道状态信息计算,用于增强细胞间干扰协调

    公开(公告)号:US20130114441A1

    公开(公告)日:2013-05-09

    申请号:US13608891

    申请日:2012-09-10

    IPC分类号: H04W24/00

    摘要: A delayed channel estimation is a channel state information (CSI) reference subframe having an index (NCSI—ref) belonging to NCSI—ref=N−4−k, where N is the subframe index on which the CSI is to be transmitted on an uplink, and k is the smallest value of k>=0, such that N−4−k belongs to a given configuration set. When k is too large, the selected CSI reference subframe is too outdated to produce accurate CSI. An undelayed channel estimation is a CSI reference subframe having an index (NCSI—ref) belonging to NCSI—ref=N−4. When the CSI reference subframe N−4 does not belong to the given subframe restriction subset, the selected channel estimate may be too noisy to produce accurate CSI. A method for CSI computation for enhanced inter-cell interference coordination (eICIC) selects between a delayed channel estimation and an undelayed channel estimation for computing CSI, for example, based on a signal metric. The CSI is computed with a selected channel estimation.

    摘要翻译: 延迟信道估计是具有属于NCSI-ref = N-4-k的索引(NCSI-ref)的信道状态信息(CSI)参考子帧,其中N是要在其上发送CSI的子帧索引 上行链路,k是k> = 0的最小值,使得N-4-k属于给定的配置集合。 当k太大时,所选择的CSI参考子帧太过时,不能产生准确的CSI。 未延迟的信道估计是具有属于NCSI-ref = N-4的索引(NCSI-ref)的CSI参考子帧。 当CSI参考子帧N-4不属于给定子帧限制子集时,所选择的信道估计可能太嘈杂以产生准确的CSI。 用于增强小区间干扰协调(eICIC)的CSI计算的方法例如基于信号度量在延迟信道估计和用于计算CSI的未延迟信道估计之间进行选择。 使用所选择的信道估计来计算CSI。

    METHOD AND APPARATUS FOR INTERFERENCE CANCELLATION BY A USER EQUIPMENT USING BLIND DETECTION
    33.
    发明申请
    METHOD AND APPARATUS FOR INTERFERENCE CANCELLATION BY A USER EQUIPMENT USING BLIND DETECTION 审中-公开
    用于使用盲点检测的用户设备进行干扰消除的方法和装置

    公开(公告)号:US20130114437A1

    公开(公告)日:2013-05-09

    申请号:US13464905

    申请日:2012-05-04

    IPC分类号: H04B15/00 H04W24/00 H04W4/00

    摘要: In order to cancel any interference due to the second cell signal (e.g., from a non-serving cell) from a signal received at a UE, without receiving additional control information, the UE blindly estimates parameters associated with decoding the second cell signal. This may include determining a metric based on sets of symbols associated with the cell signals in order to determine parameters for the second cell signal, e.g., the transmission mode, modulation format, and/or spatial scheme of the second cell signal. The parameters for the signal may be determined based on a comparison of the metric with a threshold. When a spatial scheme and a modulation format is unknown, the blind estimation may include determining a plurality of constellations of possible transmitted modulated symbols associated with a potential spatial scheme and modulation format combination. Interference cancellation can be performed using the constellations and a corresponding probability weight.

    摘要翻译: 为了从UE接收到的信号中消除由于第二小区信号(例如来自非服务小区)的任何干扰而不接收附加的控制信息,UE盲目地估计与解码第二小区信号有关的参数。 这可以包括基于与小区信号相关联的符号集来确定度量,以便确定第二小区信号的参数,例如第二小区信号的传输模式,调制格式和/或空间方案。 可以基于度量与阈值的比较来确定信号的参数。 当空间方案和调制格式未知时,盲估计可以包括确定与潜在的空间方案和调制格式组合相关联的可能传输的调制符号的多个星座。 干扰消除可以使用星座和相应的概率权重进行。

    INTERFERENCE ESTIMATION USING DATA TRAFFIC POWER AND REFERENCE SIGNAL POWER
    34.
    发明申请
    INTERFERENCE ESTIMATION USING DATA TRAFFIC POWER AND REFERENCE SIGNAL POWER 有权
    使用数据交通功率和参考信号功率的干扰估计

    公开(公告)号:US20120327795A1

    公开(公告)日:2012-12-27

    申请号:US13455906

    申请日:2012-04-25

    IPC分类号: H04W24/06

    CPC分类号: H04B17/005 H04B17/345

    摘要: In a wireless communication system, interference on data tones is estimated by detecting data transmissions from interferers. An overall interference covariance matrix is estimated as a function of scalar traffic to pilot ratio (TPR) estimates, residual interference covariance estimates, and covariance of channel estimates of dominant interferers. The interference estimates are refined as a function of reliability based on a ratio of power received from a serving cell and power received from a dominant interferer.

    摘要翻译: 在无线通信系统中,通过检测来自干扰源的数据传输来估计对数据音调的干扰。 估计总干扰协方差矩阵作为标量流量对导频比(TPR)估计,残差干扰协方差估计和主要干扰源信道估计的协方差的函数。 基于从服务小区接收的功率的比率和从主要干扰源接收的功率,将干扰估计作为可靠性的函数进行细化。

    INTERFERENCE ESTIMATION FOR WIRELESS COMMUNICATION
    35.
    发明申请
    INTERFERENCE ESTIMATION FOR WIRELESS COMMUNICATION 有权
    无线通信干扰估计

    公开(公告)号:US20120201152A1

    公开(公告)日:2012-08-09

    申请号:US13196711

    申请日:2011-08-02

    IPC分类号: H04W24/00

    CPC分类号: H04B17/345

    摘要: Interference on pilot signals and on data tones can be mismatched. Different types of interference estimates perform differently based on how the mismatch occurs. The resulting interference estimate may thus be inaccurate. Interference estimates based on pilot signals and also on data tones can both be evaluated for reliability. The more reliable of the two can then be selected. If the data tones estimate is selected, the estimate can be calculated from covariance matrices or from traffic-to-pilot ratios.

    摘要翻译: 对导频信号和数据音调的干扰可能不匹配。 基于不匹配的发生情况,不同类型的干扰估计可以不同地执行。 所得到的干扰估计可能是不准确的。 可以对可靠性进行评估,基于导频信号和数据音调的干扰估计。 然后可以选择更可靠的两个。 如果选择数据音调估计,则可以从协方差矩阵或从业务到导频比来计算估计。

    Transmission of UE-specific reference signal for wireless communication
    36.
    发明授权
    Transmission of UE-specific reference signal for wireless communication 失效
    用于无线通信的UE专用参考信号的传输

    公开(公告)号:US08576692B2

    公开(公告)日:2013-11-05

    申请号:US12878983

    申请日:2010-09-09

    IPC分类号: H04J11/00

    摘要: Techniques for transmitting UE-specific reference signals (UE-RSs) in a wireless network are described. In an aspect, a UE-RS may be transmitted in different manners depending on the number of layers used for data transmission. In one design, a cell may determine subcarriers for a UE-RS based on a frequency shift if data is transmitted on one layer and based on a predetermined set of subcarriers (with no frequency shift) if data is transmitted on multiple layers. In another aspect, a UE-RS may be transmitted on subcarriers determined based on a frequency shift for data transmission on multiple layers. In yet another aspect, a UE-RS may be transmitted from a plurality of cells to a UE for coordinated multi-point (CoMP). In yet another aspect, a UE-RS may be transmitted in a data section of a subframe including only the data section.

    摘要翻译: 描述了用于在无线网络中传送UE专用参考信号(UE-RS)的技术。 在一方面,可以根据用于数据传输的层数以不同的方式发送UE-RS。 在一种设计中,如果在多层上传输数据,则基于如果在一层上传送数据并且基于预定的一组子载波(无频移),则小区可以基于频移来确定UE-RS的子载波。 在另一方面,可以在基于用于多层数据传输的频移确定的子载波上发送UE-RS。 在另一方面,UE-RS可以从多个小区发送到用于协调多点(CoMP)的UE。 在另一方面,可以在仅包括数据部分的子帧的数据部分中发送UE-RS。

    TRANSMISSION OF UE-SPECIFIC REFERENCE SIGNAL FOR WIRELESS COMMUNICATION
    37.
    发明申请
    TRANSMISSION OF UE-SPECIFIC REFERENCE SIGNAL FOR WIRELESS COMMUNICATION 失效
    用于无线通信的UE特定参考信号的传输

    公开(公告)号:US20110216842A1

    公开(公告)日:2011-09-08

    申请号:US12878983

    申请日:2010-09-09

    IPC分类号: H04L27/28

    摘要: Techniques for transmitting UE-specific reference signals (UE-RSs) in a wireless network are described. In an aspect, a UE-RS may be transmitted in different manners depending on the number of layers used for data transmission. In one design, a cell may determine subcarriers for a UE-RS based on a frequency shift if data is transmitted on one layer and based on a predetermined set of subcarriers (with no frequency shift) if data is transmitted on multiple layers. In another aspect, a UE-RS may be transmitted on subcarriers determined based on a frequency shift for data transmission on multiple layers. In yet another aspect, a UE-RS may be transmitted from a plurality of cells to a UE for coordinated multi-point (CoMP). In yet another aspect, a UE-RS may be transmitted in a data section of a subframe including only the data section.

    摘要翻译: 描述了用于在无线网络中传送UE专用参考信号(UE-RS)的技术。 在一方面,可以根据用于数据传输的层数以不同的方式来发送UE-RS。 在一种设计中,如果在多层上传输数据,则基于如果在一层上传送数据并且基于预定的一组子载波(无频移),则小区可以基于频移来确定UE-RS的子载波。 在另一方面,可以在基于用于多层数据传输的频移确定的子载波上发送UE-RS。 在另一方面,UE-RS可以从多个小区发送到用于协调多点(CoMP)的UE。 在另一方面,可以在仅包括数据部分的子帧的数据部分中发送UE-RS。

    METHOD AND APPARATUS FOR COMPUTING AND REPORTING CHANNEL QUALITY INDICATION (CQI)
    39.
    发明申请
    METHOD AND APPARATUS FOR COMPUTING AND REPORTING CHANNEL QUALITY INDICATION (CQI) 有权
    计算和报告信道质量指示(CQI)的方法和装置

    公开(公告)号:US20100177653A1

    公开(公告)日:2010-07-15

    申请号:US12652605

    申请日:2010-01-05

    IPC分类号: H04L12/26

    摘要: Techniques for computing and reporting channel quality indication (CQI) are described. In an aspect, a plurality of CQI computation methods may be supported, and each CQI computation method may indicate how CQI should be computed. One CQI computation method may be selected for use. CQI may then be computed and reported in accordance with the selected CQI computation method. In an exemplary design, a user equipment (UE) may obtain a selected method for computing CQI, which may be chosen based on the UE capability and/or other factors. The selected method may specify (i) CQI computation for a specific codeword among a plurality of codewords or (ii) CQI computation by averaging signal quality across a plurality of layers used for transmission. The UE may compute CQI in accordance with the selected method, send the CQI to a base station, and receive data sent by the base station based on the CQI.

    摘要翻译: 描述了用于计算和报告信道质量指示(CQI)的技术。 在一个方面,可以支持多个CQI计算方法,并且每个CQI计算方法可以指示如何计算CQI。 可以选择一种CQI计算方法来使用。 然后可以根据所选择的CQI计算方法来计算和报告CQI。 在示例性设计中,用户设备(UE)可以获得用于计算CQI的所选择的方法,其可以基于UE能力和/或其他因素来选择。 所选择的方法可以指定(i)针对多个码字中的特定码字的CQI计算,或者(ii)通过用于传输的多个层平均信号质量的CQI计算。 UE可以根据所选择的方法计算CQI,向基站发送CQI,并且基于CQI接收由基站发送的数据。

    METHOD AND APPARATUS FOR SENDING CONTROL INFORMATION WITH ENHANCED COVERAGE IN A WIRELESS NETWORK
    40.
    发明申请
    METHOD AND APPARATUS FOR SENDING CONTROL INFORMATION WITH ENHANCED COVERAGE IN A WIRELESS NETWORK 审中-公开
    用于在无线网络中发送具有增强覆盖的控制信息的方法和装置

    公开(公告)号:US20110222491A1

    公开(公告)日:2011-09-15

    申请号:US13043306

    申请日:2011-03-08

    IPC分类号: H04W72/04

    摘要: Techniques for sending control information in a manner to improve reliability are described. In an aspect, control information may be sent on multiple control channels, which may be independently configured and operated, in order to improve reliability. In one design, a base station may send signaling to instruct at least one UE to receive control information on both a first control channel (e.g., a Physical Downlink control Channel (PDCCH)) and a second control channel (e.g., a Relay PDCCH (R-PDCCH)). The base station may send control information for the at least one UE on the first and second control channels, e.g., in different time and/or frequency regions of a subframe. In another aspect, control information may be sent on a control channel in multiple subframes with bundling to improve reliability. A user equipment (UE) may perform the complementary processing to recover the control information sent by the base station on multiple control channels or with bundling.

    摘要翻译: 描述了以提高可靠性的方式发送控制信息的技术。 在一方面,控制信息可以在多个控制信道上发送,这些控制信道可以被独立地配置和操作,以便提高可靠性。 在一种设计中,基站可以发送信令以指示至少一个UE在第一控制信道(例如,物理下行链路控制信道(PDCCH))和第二控制信道(例如,中继PDCCH( R-PDCCH))。 基站可以在第一和第二控制信道上发送至少一个UE的控制信息,例如在子帧的不同时间和/或频率区域中。 在另一方面,控制信息可以在具有捆绑的多个子帧中的控制信道上发送以提高可靠性。 用户设备(UE)可以执行补充处理以恢复基站在多个控制信道上发送的控制信息或者捆绑。