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    • 25. 发明申请
    • METHODS AND SYSTEMS FOR PDCCH BLIND DECODING IN MOBILE COMMUNICATIONS
    • 用于移动通信中的PDCCH盲解码的方法和系统
    • US20120263134A1
    • 2012-10-18
    • US13529900
    • 2012-06-21
    • Durga Prasad MalladiJuan MontojoSandip Sarkar
    • Durga Prasad MalladiJuan MontojoSandip Sarkar
    • H04W72/04
    • H04L1/0038H04W72/042
    • Various methods and systems for efficiently performing the blind decoding of downlink signals is described. Several forms of arranging possible CCE combinations are examined and investigated. Based on PDCCH size estimation/information, CCE concatenations that are most likely (of limited sets) can be arrived at. Tree-based concatenations are also devised using largest CCE ordering to align smaller CCE sizes to similar boundaries. By such ordering, the search space for all possible CCE ordering and sizes can be reduced to an efficient tree. Set mapping between possible lnposelstartCCElnposelend/REs are also described using a first set to secondary and tertiary sets. Various other ordering and sorting schemes are also detailed that enable a blind decode of a PDCCH channel to be efficiently performed.
    • 描述了用于有效地执行下行链路信号的盲解码的各种方法和系统。 对可能的CCE组合的几种形式进行了调查和调查。 基于PDCCH大小估计/信息,可以得出最有可能(有限集合)的CCE级联。 还设计了基于树的级联,使用最大的CCE排序来将较小的CCE大小对准到相似的边界。 通过这样的排序,所有可能的CCE排序和大小的搜索空间可以减少到一个有效的树。 也可以使用第一组到第二组和第三组来描述可能的lnposelstartCCElnposelend / RE之间的映射。 还详细描述了能够有效执行PDCCH信道的盲解码的各种其他排序和排序方案。
    • 28. 发明申请
    • EIGEN-BEAMFORMING FOR WIRELESS COMMUNICATION SYSTEMS
    • 用于无线通信系统的EIGEN-BEAMFORMING
    • US20090046570A1
    • 2009-02-19
    • US12189483
    • 2008-08-11
    • Sandip SarkarByoung-Hoon KimDurga Prasad MalladiJuan Montojo
    • Sandip SarkarByoung-Hoon KimDurga Prasad MalladiJuan Montojo
    • H04J11/00
    • H04B7/0417H04B7/0434H04B7/063H04B7/0632H04L5/14H04L25/0204H04L25/0228H04L25/0242H04L25/03343H04L2025/03426H04L2025/03802
    • Techniques for sending multiple-input multiple-output (MIMO) transmissions in wireless communication systems are described. In one design, a transmitter sends a first reference signal via a first link, e.g., a cell-specific reference signal via the downlink. The transmitter receives channel quality indicator (CQI) information determined by a receiver based on the first reference signal. The transmitter also receives a second reference signal from the receiver via a second link, e.g., a sounding reference signal via the uplink. The transmitter obtains at least one MIMO channel matrix for the first link based on the second reference signal. The transmitter determines at least one precoding matrix based on the at least one MIMO channel matrix, e.g., in accordance with ideal eigen-beamforming or pseudo eigen-beamforming. The transmitter then sends a data transmission to the receiver based on the at least one precoding matrix and the CQI information.
    • 描述了在无线通信系统中发送多输入多输出(MIMO)传输的技术。 在一种设计中,发射机经由第一链路发送第一参考信号,例如经由下行链路的小区特定参考信号。 发射机基于第一参考信号接收由接收机确定的信道质量指示符(CQI)信息。 发射机还经由第二链路从接收机接收第二参考信号,例如经由上行链路的探测参考信号。 发射机基于第二参考信号获得用于第一链路的至少一个MIMO信道矩阵。 发射机基于至少一个MIMO信道矩阵来确定至少一个预编码矩阵,例如,根据理想的本征波束形成或伪特征波束形成。 然后,发射机基于至少一个预编码矩阵和CQI信息向接收机发送数据传输。
    • 30. 发明授权
    • Methods and systems for PDCCH blind decoding in mobile communications
    • 移动通信中PDCCH盲解码的方法和系统
    • US08238475B2
    • 2012-08-07
    • US12259798
    • 2008-10-28
    • Durga Prasad MalladiJuan MontojoSandip Sarkar
    • Durga Prasad MalladiJuan MontojoSandip Sarkar
    • H04L27/00
    • H04L1/0038H04W72/042
    • Various methods and systems for efficiently performing the blind decoding of downlink signals is described. Several forms of arranging possible CCE combinations are examined and investigated. Based on PDCCH size estimation/information, CCE concatenations that are most likely (of limited sets) can be arrived at. Tree-based concatenations are also devised using largest CCE ordering to align smaller CCE sizes to similar boundaries. By such ordering, the search space for all possible CCE ordering and sizes can be reduced to an efficient tree. Set mapping between possible lnposelstartCCElnposelend/REs are also described using a first set to secondary and tertiary sets. Various other ordering and sorting schemes are also detailed that enable a blind decode of a PDCCH channel to be efficiently performed.
    • 描述了用于有效地执行下行链路信号的盲解码的各种方法和系统。 对可能的CCE组合的几种形式进行了调查和调查。 基于PDCCH大小估计/信息,可以得出最有可能(有限集合)的CCE级联。 还设计了基于树的级联,使用最大的CCE排序来将较小的CCE大小对准到类似的边界。 通过这样的排序,所有可能的CCE排序和大小的搜索空间可以减少到一个有效的树。 也可以使用第一组到第二组和第三组来描述可能的lnposelstartCCElnposelend / RE之间的映射。 还详细描述了能够有效执行PDCCH信道的盲解码的各种其他排序和排序方案。