TECHNOLOGY FOR CSI FEEDBACK IN A MIMO COMMUNICATION SYSTEM
    83.
    发明申请
    TECHNOLOGY FOR CSI FEEDBACK IN A MIMO COMMUNICATION SYSTEM 有权
    MIMO通信系统中的CSI反馈技术

    公开(公告)号:US20140112406A1

    公开(公告)日:2014-04-24

    申请号:US13994745

    申请日:2011-12-19

    IPC分类号: H04B7/04

    摘要: Technology for channel state information (CSI) feedback in a multiple-input multiple-output (MIMO) communication system is disclosed. A method comprises receiving, at a mobile device, a dynamic channel state information (CSI) feedback switch signal from a transmission station that identifies a selected CSI feedback state for the mobile device. A process for selecting a precoding matrix indicator (PMI) and a rank indicator is identified based on the CSI feedback switch signal as either a process configured for MU-MIMO reception or single-user (SU) MIMO reception of a downlink signal at the mobile device.

    摘要翻译: 公开了一种多输入多输出(MIMO)通信系统中的信道状态信息(CSI)反馈技术。 一种方法包括在移动设备处接收来自识别移动设备的所选择的CSI反馈状态的传输站的动态信道状态信息(CSI)反馈切换信号。 基于CSI反馈切换信号,将用于选择预编码矩阵指示符(PMI)和秩指示符的过程识别为用于在移动站处的MU-MIMO接收或下行链路信号的单用户(SU)MIMO接收的处理 设备。

    BLIND DECODING FOR AN ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL (EPDCCH)
    84.
    发明申请
    BLIND DECODING FOR AN ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL (EPDCCH) 有权
    用于增强物理下行链路控制信道(EPDCCH)的BLIND解码

    公开(公告)号:US20140092830A1

    公开(公告)日:2014-04-03

    申请号:US13931102

    申请日:2013-06-28

    IPC分类号: H04W72/04

    摘要: Technology for blind decoding downlink control information (DCI) from an enhanced physical downlink control channel (EPDCCH) is disclosed. In an example, a user equipment (UE) can include a processor configured to: Recursively attempt to decode the DCI from enhanced control channel elements (ECCE) of the EPDCCH from physical resource block (PRB) region candidates in a PRB set using a selected set of enhanced resource element group (EREG) index maps for the ECCE until the DCI is successfully decoded; and decode the DCI with an EREG index map associated with a same aggregation level used to encode the DCI. Each EREG index map can be configured for a different aggregation level (AL).

    摘要翻译: 公开了一种用于从增强物理下行链路控制信道(EPDCCH)盲解码下行链路控制信息(DCI)的技术。 在一个示例中,用户设备(UE)可以包括处理器,其被配置为:递归地尝试从使用所选择的PRB集合的PRB集合中的物理资源块(PRB)区域候选的EPDCCH的增强控制信道元素(ECCE)解码DCI 一组ECCE增强资源元素组(EREG)索引映射,直到DCI成功解码; 并用与用于编码DCI的相同聚合级别相关联的EREG索引映射来解码DCI。 可以为不同的聚合级别(AL)配置每个EREG索引映射。

    CQI definition for transmission mode 9 in LTE-advanced
    85.
    发明授权
    CQI definition for transmission mode 9 in LTE-advanced 有权
    LTE-Advanced中传输模式9的CQI定义

    公开(公告)号:US08675558B2

    公开(公告)日:2014-03-18

    申请号:US13167941

    申请日:2011-06-24

    IPC分类号: H04W4/00

    摘要: An evolved Node B (eNB) in a 3GPP LTE-based network receives Channel State Information-Reference Signal (CSI-RS) from a User Equipment (UE) that is configured with Precoder Matrix Indicator (PMI) disabled. A channel is estimated between the eNB and the UE for link adaptation in Transmission Mode 9 (TM9) based on CSI-RS by the UE and SRS by the eNB. CQI is calculated at UE such that if a number of CSI-RS antenna ports equals one, TM9 transmission from the eNB to the UE uses a predetermined single antenna port. If the number of CSI-RS antenna ports equals two, TM9 transmission from the eNB to the UE uses transmit diversity. If the number of CSI-RS antenna ports does not equal one or two, TM9 transmission from the eNB to the UE uses spatial multiplexing based on a rank-1 precoder that is determined from a wideband channel covariance matrix R.

    摘要翻译: 基于3GPP LTE的网络中的演进节点B(eNB)从被配置为禁用预编码矩阵指示符(PMI)的用户设备(UE)接收信道状态信息参考信号(CSI-RS)。 在eNB和UE之间估计基于UE的SRS-RS的传输模式9(TM9)中的链路自适应的信道。 在UE处计算CQI,使得如果CSI-RS天线端口的数量等于1,则从eNB到UE的TM9传输使用预定的单个天线端口。 如果CSI-RS天线端口的数量等于2,则从eNB到UE的TM9传输使用发送分集。 如果CSI-RS天线端口的数量不等于1或2,则从eNB到UE的TM9传输使用基于从宽带信道协方差矩阵R确定的秩1预编码器的空间复用。

    ENHANCED PERFORMANCE MULTI-USER MULTIPLE INPUT OUTPUT (MU-MIMO) RADIO LINKS
    86.
    发明申请
    ENHANCED PERFORMANCE MULTI-USER MULTIPLE INPUT OUTPUT (MU-MIMO) RADIO LINKS 审中-公开
    增强性能多用户多输入输出(MU-MIMO)无线链路

    公开(公告)号:US20140072068A1

    公开(公告)日:2014-03-13

    申请号:US13995167

    申请日:2011-09-30

    IPC分类号: H04B7/04 H04L25/03

    摘要: Technology is described for enhancing performance of multi-user multiple input multiple output (MU-MIMO) radio links. A system can include a scrambling module to scramble coded bits in codewords to be transmitted in a transmission. A modulation mapper can modulate the scrambled coded bits to generate modulation symbols in the transmission. A precoding module can precode modulation symbols for the transmission. A feedback module using a codebook with an increased number of codewords can be used to reduce a channel state information (CSI) quantization error in a transmission from a plurality of antennas coupled to the precoding module and configured to transmit the precoded transmission to multiple users.

    摘要翻译: 描述了用于增强多用户多输入多输出(MU-MIMO)无线电链路的性能的技术。 一个系统可以包括加扰模块,以便在传输中传输的码字中对编码比特进行加扰。 调制映射器可以调制加扰的编码比特以在传输中产生调制符号。 预编码模块可以预编码用于传输的调制符号。 可以使用具有增加的码字数量的码本的反馈模块来减少来自耦合到预编码模块的多个天线的传输中的信道状态信息(CSI)量化误差,并且被配置为将预编码传输发送到多个用户。