Generation of random access preambles

    公开(公告)号:US09730114B2

    公开(公告)日:2017-08-08

    申请号:US14317450

    申请日:2014-06-27

    Abstract: Embodiments described herein relate generally to a random procedure between wireless transmit/receive units (“WTRUs”) and access nodes. A WTRU may be adapted to determine a repetition level that corresponds to a number of repetitions associated with communication with the access node. The WTRU may then determine at least one of a resource and/or a logical root sequence index associated with the random access procedure. The WTRU may transmit a random access preamble based on the resource and/or a logical root sequence index. The access node may be adapted to determine a repetition level associated with the WTRU based on the random access procedure. Other embodiments may be described and/or claimed.

    User equipment and methods for operation in coverage enhancement mode with physical random access channel preamble
    44.
    发明授权
    User equipment and methods for operation in coverage enhancement mode with physical random access channel preamble 有权
    用户设备和方法在覆盖增强模式下进行物理随机接入信道前导码

    公开(公告)号:US09456405B2

    公开(公告)日:2016-09-27

    申请号:US14489874

    申请日:2014-09-18

    Abstract: Embodiments of a User Equipment (UE) to operate in accordance with a physical random access channel (PRACH) are disclosed herein. The UE may comprise hardware processing circuitry to determine a coverage enhancement category for the UE based on downlink channel statistics related to reception of downlink signals at the UE from an Evolved Node-B (eNB) and an uplink-downlink imbalance parameter related to uplink reception at the eNB. The hardware processing circuitry may be further to select, for use in a coverage enhancement mode, a PRACH preamble from a set of candidate PRACH preambles based on the determined coverage enhancement category for the UE. In some embodiments, at least some of the candidate PRACH preambles may span a different number of sub-frames.

    Abstract translation: 本文公开了根据物理随机接入信道(PRACH)来操作的用户设备(UE)的实施例。 UE可以包括硬件处理电路,用于基于与来自演进节点B(eNB)的UE处的UE的下行链路信号的接收相关的下行链路信道统计以及与上行链路接收相关的上行链路 - 下行链路不平衡参数来确定UE的覆盖增强类别 在eNB。 硬件处理电路可以进一步基于针对UE的所确定的覆盖增强类别,从覆盖增强模式中选择来自一组候选PRACH前导码的PRACH前导码。 在一些实施例中,候选PRACH前导码中的至少一些可以跨越不同数量的子帧。

    Quantized eigen beams for controlling antenna array elements in a wireless network
    45.
    发明授权
    Quantized eigen beams for controlling antenna array elements in a wireless network 有权
    用于控制无线网络中的天线阵元件的量化本征波束

    公开(公告)号:US09397736B2

    公开(公告)日:2016-07-19

    申请号:US14695800

    申请日:2015-04-24

    Abstract: A user equipment (UE) may communicate channel state information in a wireless network. The UE may include transceiver circuitry to receive orthogonal frequency division multiple access (OFDMA) signals from an Enhanced node B (eNB). The UE may include processing circuitry to derive one or more principal eigen beams from the received OFDMA signals. The principal eigen beams may have a rank greater than or equal to one. The processing circuitry may derive quantized eigen beams from the principal eigen beams. The processing circuitry may select, in response to the quantized eigen beams, a subset of available antenna ports on the eNB for receiving from the eNB and transmitting to the eNB. The UE may communicate to the eNB a bit pattern of the quantized eigen beams and at least one of a wideband channel quality indicator (CQI) or a subband CQI conditioned on the quantized eigen beams.

    Abstract translation: 用户设备(UE)可以在无线网络中传送信道状态信息。 UE可以包括收发机电路以从增强型节点B(eNB)接收正交频分多址(OFDMA)信号。 UE可以包括处理电路以从接收的OFDMA信号导出一个或多个主要本征波束。 主本征波束的等级可以大于或等于1。 处理电路可以从主要特征束导出量化的本征波束。 处理电路可以响应于量化的本征波束选择eNB上的可用天线端口的子集,以从eNB接收并发送到eNB。 UE可以向eNB通信量化特征波束的位模式和在量化的本征波束上调节的宽带信道质量指示符(CQI)或子带CQI中的至少一个。

    RADIO (NR) UNLICENSED PHYSICAL UPLINK CONTROL CHANNEL WITH INTERLACED STRUCTURE

    公开(公告)号:US20210135803A1

    公开(公告)日:2021-05-06

    申请号:US16640045

    申请日:2018-08-17

    Abstract: Technology for a next generation node B (gNB), operable for new radio (NR) unlicensed communication. The gNB can encode a discovery reference signal (DRS) in a single subframe. The DRS comprising a first synchronization signal (SS) block comprising a plurality of contiguous orthogonal frequency division multiplexed (OFDM) symbols in the single subframe. The DRS comprising a second SS block comprising a plurality of contiguous OFDM symbols in the single subframe. The DRS comprising a plurality of additional OFDM symbols for an SS block in the single subframe. The gNB can send the DRS in the single subframe to a user equipment (UE). The gNB can have a memory interface configured to send to a memory the DRS.

    Performing mission critical communications at a user equipment (UE)

    公开(公告)号:US10721772B2

    公开(公告)日:2020-07-21

    申请号:US15748157

    申请日:2015-12-16

    Abstract: Technology for a user equipment (UE) operable to perform mission critical communications with an eNodeB is disclosed. The UE can transmit a physical random access channel (PRACH) signal to the eNodeB that indicates a mission critical communication to be performed between the UE and the eNodeB. The PRACH signal can be transmitted in accordance with a first transmission time interval (TTI). The UE can receive a random access response (RAR) message from the eNodeB that includes a timing advance (TA) and a resource allocation for the mission critical communication. The RAR message can be transmitted from the eNodeB using a second TTI. The UE can perform the mission critical communication with the eNodeB in an uplink using the TA and the resource allocation indicated in the RAR message. The mission critical communication can be performed using a physical uplink shared channel (PUSCH) and in accordance with the second TTI.

    DESIGN OF EARLY TERMINATION SIGNAL AND HARQ-ACK FEEDBACK FOR PUSCH

    公开(公告)号:US20200092858A1

    公开(公告)日:2020-03-19

    申请号:US16496882

    申请日:2018-03-20

    Abstract: Systems and methods of early termination of uplink data transmissions for a UE are described. The UE transmits capacity information that indicates that the UE supports use of an ETS. The ETS indicates successful reception by the eNB of the uplink data prior to an end of a scheduled transmission period to transmit repeated instances of the data. The UE receives a schedule for repeated transmissions of the data that is based on a coverage level of the UE, and then transmits sets of one or more repetitions. After the transmission, the UE monitors a predetermined resource whether the ETS is present or whether the ETS indicates an ACK. If the ETS indicates successful reception, the UE terminates transmission of the remaining repetitions of the data and enters a sleep mode or transmits other uplink data.

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