-
公开(公告)号：US20130039332A1
公开(公告)日：2013-02-14
申请号：US13571800
申请日：2012-08-10
申请人： Shahrokh Nayeb Nazar , Moon-il Lee , Robert L. Olesen , Manasa Raghavan , Lakshmi R. Iyer , Benoit Pelletier
发明人： Shahrokh Nayeb Nazar , Moon-il Lee , Robert L. Olesen , Manasa Raghavan , Lakshmi R. Iyer , Benoit Pelletier
IPC分类号： H04W72/04
CPC分类号： H04B7/0452 , H04W72/04
摘要： A wireless transmit/receive unit (WTRU) receives a downlink transmission from an eNodeB including a plurality of spatial layers transmitted to a plurality of WTRUs paired for multi-user MIMO. The WTRU decodes the downlink transmission based on a corresponding WTRU-specific reference signal. WTRU-specific reference signals are multiplexed using a frequency and code division multiplexing. WTRU-specific reference signals for different sub-group of antenna ports are multiplexed onto different subcarriers in a frequency domain and the WTRU-specific reference signals of the same sub-group of antennas ports are multiplied by an orthogonal cover code. The resource elements used for the WTRU-specific reference signals on antenna ports in one sub-group may be muted on antenna ports in another sub-group. A WTRU may transmit the uplink demodulation reference signal without precoding. The number of resource blocks allocated for the demodulation reference signal may be greater than the number of resource blocks allocated for the payload.
摘要翻译： 无线发射/接收单元（WTRU）从eNodeB接收包括发射到多用户MIMO配对的多个WTRU的多个空间层的下行链路传输。 WTRU基于相应的WTRU特定参考信号来解码下行链路传输。 WTRU特定的参考信号使用频率和码分多路复用。 用于不同子天线端口的WTRU特定参考信号被多路复用到频域中的不同子载波上，并且将相同子天线端口的WTRU特定参考信号乘以正交覆盖码。 用于一个子组中的天线端口上的WTRU特定参考信号的资源元素可以在另一子组中的天线端口上被静音。 WTRU可以在不进行预编码的情况下发送上行链路解调参考信号。 分配给解调参考信号的资源块的数量可以大于为有效载荷分配的资源块的数量。
-
公开(公告)号：US09548802B2
公开(公告)日：2017-01-17
申请号：US13571800
申请日：2012-08-10
申请人： Shahrokh Nayeb Nazar , Moon-il Lee , Robert L. Olesen , Manasa Raghavan , Lakshmi R. Iyer , Benoit Pelletier
发明人： Shahrokh Nayeb Nazar , Moon-il Lee , Robert L. Olesen , Manasa Raghavan , Lakshmi R. Iyer , Benoit Pelletier
CPC分类号： H04B7/0452 , H04W72/04
摘要： A wireless transmit/receive unit (WTRU) receives a downlink transmission from an eNodeB including a plurality of spatial layers transmitted to a plurality of WTRUs paired for multi-user MIMO. The WTRU decodes the downlink transmission based on a corresponding WTRU-specific reference signal. WTRU-specific reference signals are multiplexed using a frequency and code division multiplexing. WTRU-specific reference signals for different sub-group of antenna ports are multiplexed onto different subcarriers in a frequency domain and the WTRU-specific reference signals of the same sub-group of antennas ports are multiplied by an orthogonal cover code. The resource elements used for the WTRU-specific reference signals on antenna ports in one sub-group may be muted on antenna ports in another sub-group. A WTRU may transmit the uplink demodulation reference signal without precoding. The number of resource blocks allocated for the demodulation reference signal may be greater than the number of resource blocks allocated for the payload.
摘要翻译： 无线发射/接收单元（WTRU）从eNodeB接收包括发射到多用户MIMO配对的多个WTRU的多个空间层的下行链路传输。 WTRU基于相应的WTRU特定参考信号来解码下行链路传输。 WTRU特定的参考信号使用频率和码分多路复用。 用于不同子天线端口的WTRU特定参考信号被多路复用到频域中的不同子载波上，并且将相同子天线端口的WTRU特定参考信号乘以正交覆盖码。 用于一个子组中的天线端口上的WTRU特定参考信号的资源元素可以在另一子组中的天线端口上被静音。 WTRU可以在不进行预编码的情况下发送上行链路解调参考信号。 分配给解调参考信号的资源块的数量可以大于为有效载荷分配的资源块的数量。
-
公开(公告)号：US20120275530A1
公开(公告)日：2012-11-01
申请号：US13457145
申请日：2012-04-26
申请人： Shahrokh Nayeb Nazar , Robert L. Olesen , Manasa Raghavan , Muhammad U. Fazili , William E. Lawton , Yingxue K. Li
发明人： Shahrokh Nayeb Nazar , Robert L. Olesen , Manasa Raghavan , Muhammad U. Fazili , William E. Lawton , Yingxue K. Li
IPC分类号： H04L1/02
CPC分类号： H04B7/0456 , H04B7/022 , H04B7/0626 , H04L25/0206 , H04L25/03343 , H04L2025/03426
摘要： Methods and apparatus for multiple-input multiple-output (MIMO) transmissions are disclosed. A base station may precode wireless transmit/receive unit (WTRU)-specific reference signals and data that are transmitted to a WTRU using a randomly selected precoder. The precoder may be selected based on a predefined precoder selection sequence or by the base station. A different precoder may be applied to different resource blocks (RBs). In addition, a large delay cyclic delay diversity (CDD) or discrete Fourier transform (DFT) spreading may be applied on the WTRU-specific reference signals and the data. For heterogeneous deployed antennas, spatial diversity gain is achieved by dynamically scheduling resources between transmission points. A hopping scheme may be applied across the transmission points as the resources are dynamically partitioned between the transmission points. A different randomly selected precoder may be applied to each RB transmitted from a different transmission point.
摘要翻译： 公开了用于多输入多输出（MIMO）传输的方法和装置。 基站可以使用随机选择的预编码器对无线发射/接收单元（WTRU）特定的参考信号和数据进行预编码，所述参考信号和数据被发送到WTRU。 可以基于预定义的预编码器选择序列或基站来选择预编码器。 不同的预编码器可以应用于不同的资源块（RB）。 此外，可以对WTRU特定的参考信号和数据应用大的延迟循环延迟分集（CDD）或离散傅立叶变换（DFT）扩展。 对于异构部署的天线，通过在传输点之间动态调度资源来实现空间分集增益。 当资源在传输点之间动态分配时，可以跨传输点应用跳频方案。 可以将不同的随机选择的预编码器应用于从不同传输点发送的每个RB。
-
公开(公告)号：US09331757B2
公开(公告)日：2016-05-03
申请号：US13457145
申请日：2012-04-26
申请人： Shahrokh Nayeb Nazar , Robert L. Olesen , Manasa Raghavan , Muhammad U. Fazili , William E. Lawton , Yingxue K. Li
发明人： Shahrokh Nayeb Nazar , Robert L. Olesen , Manasa Raghavan , Muhammad U. Fazili , William E. Lawton , Yingxue K. Li
CPC分类号： H04B7/0456 , H04B7/022 , H04B7/0626 , H04L25/0206 , H04L25/03343 , H04L2025/03426
摘要： Methods and apparatus for multiple-input multiple-output (MIMO) transmissions are disclosed. A base station may precode wireless transmit/receive unit (WTRU)-specific reference signals and data that are transmitted to a WTRU using a randomly selected precoder. The precoder may be selected based on a predefined precoder selection sequence or by the base station. A different precoder may be applied to different resource blocks (RBs). In addition, a large delay cyclic delay diversity (CDD) or discrete Fourier transform (DFT) spreading may be applied on the WTRU-specific reference signals and the data. For heterogeneous deployed antennas, spatial diversity gain is achieved by dynamically scheduling resources between transmission points. A hopping scheme may be applied across the transmission points as the resources are dynamically partitioned between the transmission points. A different randomly selected precoder may be applied to each RB transmitted from a different transmission point.
摘要翻译： 公开了用于多输入多输出（MIMO）传输的方法和装置。 基站可以使用随机选择的预编码器对无线发射/接收单元（WTRU）特定的参考信号和数据进行预编码，所述参考信号和数据被发送到WTRU。 可以基于预定义的预编码器选择序列或基站来选择预编码器。 不同的预编码器可以应用于不同的资源块（RB）。 此外，可以对WTRU特定的参考信号和数据应用大的延迟循环延迟分集（CDD）或离散傅立叶变换（DFT）扩展。 对于异构部署的天线，通过在传输点之间动态调度资源来实现空间分集增益。 当资源在传输点之间动态分配时，可以跨传输点应用跳频方案。 可以将不同的随机选择的预编码器应用于从不同传输点发送的每个RB。
-
公开(公告)号：US20200374079A1
公开(公告)日：2020-11-26
申请号：US16993901
申请日：2020-08-14
摘要： An apparatus for use in a UE includes processing circuitry coupled to a memory. To configure the UE for high-speed train (HST) communications in a 5G-NR network, the processing circuitry is to decode configuration signaling received from an RRH operating as a gNB. The configuration signaling indicating an upcoming configuration transmission of network assistance information from the RRH. The network assistance information received from the RRH is decoded. TRS-based processing is performed to track a frequency offset (FO) associated with a downlink data transmission from the RRH. The TRS-based processing using a single-shot FO estimation based on a FO instruction in the network assistance information received from the RRH. The downlink data transmission is demodulated based on applying a local oscillator (LO) adjustment using the FO.
-
公开(公告)号：US20200229161A1
公开(公告)日：2020-07-16
申请号：US16829353
申请日：2020-03-25
申请人： Manasa Raghavan , Jie Cui , Yang Tang , Qiming Li , Zhibin Yu
发明人： Manasa Raghavan , Jie Cui , Yang Tang , Qiming Li , Zhibin Yu
摘要： A next-generation node B (gNB) configured for operation in a fifth-generation system (5GS) encode signalling for transmission to a user equipment (UE) indicating a Transmission Configuration Indication (TCI) state change to activate a new TCI state. A physical downlink control channel (PDCCH) is encoded in accordance with a highest aggregation level if the signalling indicating the TCI state change indicates activation of a new TCI state for the PDCCH. A physical downlink shared channel (PDSCH) is encoded in accordance with a lowest modulation and coding scheme (MCS) level if the signalling indicating the TCI state change indicates activation of a new TCI state for the PDSCH. After the TCI state change, reference signals (RS) are transmitted with a different spatial filter or different antenna ports demodulation of the PDCCH and PDSCH by the UE.
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.027 秒)
