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    • 3. 发明授权
    • Multiplexing and power control of uplink control channels in a wireless communication system
    • 无线通信系统中上行控制信道的多路复用和功率控制
    • US08750917B2
    • 2014-06-10
    • US12117457
    • 2008-05-08
    • Hao XuDurga Prasad MalladiRachel Wang
    • Hao XuDurga Prasad MalladiRachel Wang
    • H04W52/00
    • H04L5/0051H04L5/0007H04L5/0016H04L5/0039H04L5/0053H04L5/0055H04L27/2613H04W52/16H04W52/241H04W52/325H04W52/48
    • Techniques for transmitting control information in a wireless communication system are described. The system may support acknowledgement (ACK) channels and channel quality indicator (CQI) channels, which may have different target signal-to-noise ratios (SNRs). The ACK and CQI channels from different user equipments (UEs) may be multiplexed on the same resource block. In one design, the transmit power of a CQI channel may be set to achieve a nominal target SNR for CQI when not multiplexed with the ACK channels and may be reduced to achieve a lower target SNR when multiplexed with the ACK channels. In another design, the transmit power of an ACK channel may be set to achieve a nominal target SNR for ACK when not multiplexed with the CQI channels and may be boosted to achieve a higher target SNR when multiplexed with the CQI channels. The CQI channel may randomly hop to mitigate performance degradation.
    • 描述用于在无线通信系统中发送控制信息的技术。 该系统可以支持可能具有不同的目标信噪比(SNR)的确认(ACK)信道和信道质量指示符(CQI)信道。 来自不同用户设备(UE)的ACK和CQI信道可以被复用在相同的资源块上。 在一种设计中,可以设置CQI信道的发射功率,以便在不与ACK信道进行多路复用时实现CQI的标称目标SNR,并且当与ACK信道多路复用时,可以减小目标SNR。 在另一种设计中,可以将ACK信道的发射功率设置为在不与CQI信道进行多路复用时实现用于ACK的标称目标SNR,并且当与CQI信道进行多路复用时可以升高以实现更高的目标SNR。 CQI信道可以随机地跳过以减轻性能下降。
    • 8. 发明申请
    • ENCODED CONTROL CHANNEL INFORMATION INTERLEAVING
    • 编码控制信道信息交互
    • US20090296850A1
    • 2009-12-03
    • US12431410
    • 2009-04-28
    • Hao XuDurga Prasad MalladiPeter GaalZhifei Fan
    • Hao XuDurga Prasad MalladiPeter GaalZhifei Fan
    • H04L27/00
    • H04L1/0026H03M13/136H03M13/271H03M13/275H03M13/6362H03M13/6525H03M13/6544H04L1/001H04L1/0057H04L1/0071H04L1/0072
    • Systems and methodologies are described that facilitate interleaving encoded control channel information for transmission over an uplink channel. The encoded control channel information, for example, can include encoded Channel Quality Indicator (CQI) information, encoded Precoding Matrix Indicator (PMI) information, and/or Rank Indicator (RI) information. CQI information, PMI information, and/or RI information can be encoded at an access terminal, for instance, by applying a punctured Reed Muller block code to generate a sequence of encoded bits. The encoded bits can be interleaved to reorder the sequence utilizing one or more interleaving approaches. Examples of interleaving approaches that can be leveraged include prime number based interleaving, generalized bit reversal interleaving, column-row interleaving with column bit reversal, and/or M-sequence based interleaving. Further, the reordered sequence of encoded bits can be transmitted to a base station over an uplink channel.
    • 描述了促进交织编码的控制信道信息以在上行链路信道上传输的系统和方法。 编码的控制信道信息例如可以包括编码信道质量指示符(CQI)信息,经编码的预编码矩阵指示符(PMI)信息和/或秩指示符(RI)信息。 CQI信息,PMI信息和/或RI信息可以在接入终端进行编码,例如通过应用穿孔的Reed Muller块码来生成编码比特序列。 编码比特可以被交织,以便利用一个或多个交织方法对序列重排序。 可以利用的交织方法的示例包括基于素数的交织,广义比特反转交织,具有列比特反转的列行交织和/或基于M序列的交织。 此外,编码比特的重新排序的序列可以通过上行链路信道发送到基站。
    • 9. 发明申请
    • METHOD AND APPARATUS FOR MULTIPLEXING CDM PILOT AND FDM DATA
    • 用于多媒体CDM引导和FDM数据的方法和装置
    • US20080279170A1
    • 2008-11-13
    • US12116081
    • 2008-05-06
    • Durga Prasad MalladiHao XuZhifei Fan
    • Durga Prasad MalladiHao XuZhifei Fan
    • H04J1/00H04J13/00
    • H04L5/0051H04L5/0017H04L5/0039H04L5/0041
    • Techniques for sending control information in a wireless communication system are described. In an aspect, a user equipment (UE) may send data for control information in a resource block with frequency division multiplexing (FDM) and may send pilot in the resource block with frequency-domain code division multiplexing (CDM). The UE may determine multiple groups of subcarriers to use to send data in multiple symbol periods of the resource block based on a predetermined pattern or a pseudo-random hopping pattern. Each group may include consecutive subcarriers to support localized FDM. The multiple groups may include different subcarriers to provide frequency diversity and possibly interference averaging. The UE may send modulation symbols for data (e.g., in the time domain) on the multiple groups of subcarriers in the multiple symbol periods. The UE may send a reference signal sequence for pilot on multiple subcarriers in each symbol period for pilot.
    • 描述用于在无线通信系统中发送控制信息的技术。 一方面,用户设备(UE)可以通过频分复用(FDM)在资源块中发送用于控制信息的数据,并且可以使用频域码分复用(CDM)在资源块中发送导频。 UE可以基于预定模式或伪随机跳频模式来确定用于在资源块的多个符号周期中发送数据的多个子载波组。 每个组可以包括连续的子载波以支持本地化的FDM。 多个组可以包括不同的子载波以提供频率分集和可能的干扰平均。 UE可以在多个符号周期中的多个子载波组上发送用于数据(例如,在时域中)的调制符号。 UE可以在用于导频的每个符号周期中在多个子载波上发送用于导频的参考信号序列。