CQI AND PMI OFFSET FOR UNLICENSED EMTC TRANSMISSION

    公开(公告)号:US20190229794A1

    公开(公告)日:2019-07-25

    申请号:US16259715

    申请日:2019-01-28

    IPC分类号: H04B7/06 H04W72/04 H04W56/00

    摘要: An apparatus and method for CSI reporting in the unlicensed band are described. CRS-RSs are transmitted from a RAN in narrowband data channels in the unlicensed band to an eMTC UE. The UE determines the CQI and PMI from the CRS-RSs and transmits a periodic CSI report to the RAN that contains the CQI and PMI. The periodic CSI report is received at a nsfrel th subframe of a nmframe th mframe, where nmframe satisfies nmframe mod Npd,mframe=NOFFSET,mframe where Nmframe is a reporting period in terms of mframes and NOFFSET,mframe is a reporting period offset in terms of mframes, and nsfrel satisfies nsfrel−20=NOFFSET,CQI where NOFFSET,CQI is a reporting period offset in subframes.

    REMOTE RADIO UNIT AND BASEBAND UNIT FOR ASYMETRIC RADIO AREA NETWORK CHANNEL PROCESSING
    56.
    发明申请
    REMOTE RADIO UNIT AND BASEBAND UNIT FOR ASYMETRIC RADIO AREA NETWORK CHANNEL PROCESSING 审中-公开
    远程无线电单元和基站无线电区域网络通道处理

    公开(公告)号:US20160183248A1

    公开(公告)日:2016-06-23

    申请号:US14578045

    申请日:2014-12-19

    IPC分类号: H04W72/04 H04B7/04 H04W74/08

    摘要: Embodiments describe example radio access networks where uplink and downlink communications operate asymmetrically. In one embodiment, an inverse fast Fourier transform and an add cyclic prefix operation is performed on a downlink communications by a baseband unit. In an uplink communication using the same baseband unit, a corresponding fast Fourier transform and a remove cyclic prefix operation are performed at a remote radio unit. This generates different levels of traffic on a physical communication link between the baseband unit and the remote radio unit for uplink and downlink communications with similar characteristics.

    摘要翻译: 实施例描述了上行链路和下行链路通信不对称地操作的示例性无线电接入网络。 在一个实施例中,由基带单元对下行链路通信执行快速傅里叶逆变换和附加循环前缀操作。 在使用相同基带单元的上行链路通信中,在远程无线单元执行对应的快速傅里叶变换和去除循环前缀操作。 这在基带单元和远程无线电单元之间的物理通信链路上产生用于具有相似特性的上行链路和下行链路通信的不同级别的业务。

    Wireless Communication via Combined Channel Training and Physical Layer Header Signaling
    57.
    发明申请
    Wireless Communication via Combined Channel Training and Physical Layer Header Signaling 审中-公开
    通过组合信道训练和物理层报头信令进行无线通信

    公开(公告)号:US20160066324A1

    公开(公告)日:2016-03-03

    申请号:US14583253

    申请日:2014-12-26

    摘要: Embodiments herein relate to wireless communication using combined channel training and physical layer header (SIG) signaling. Devices that comply with the 802.11 ax or High Efficiency WLAN (HEW) standard may generate and transmit packets that include such combined information. The combined information may be beamformed to a receiver device via an OFDM signal, which may be decoded by the receiver device to obtain subsequent data included in the signal. For example, initial training symbols associated with channel training subcarriers in the signal may be detected and used to perform a rough estimate of the channel. The rough estimate may thereafter be refined using data symbols detected from adjacent data subcarriers using the channel training symbols. In this way, data subcarriers may also be used to determine a channel response along with channel training subcarriers. Channel training information may be transmitted with data, such as user-specific information, in a single symbol.

    摘要翻译: 本文的实施例涉及使用组合信道训练和物理层报头(SIG)信令的无线通信。 符合802.11 ax或高效WLAN(HEW)标准的设备可能会生成并传输包含这些组合信息的数据包。 组合的信息可以经由OFDM信号被波束形成到接收机设备,OFDM信号可以被接收机设备解码以获得包括在信号中的后续数据。 例如,可以检测与信号中的信道训练子载波相关联的初始训练符号,并用于执行信道的粗略估计。 之后可以使用使用信道训练符号从相邻数据子载波检测的数据符号来粗略估计。 以这种方式,数据副载波也可以用于确定与信道训练子载波一起的信道响应。 信道训练信息可以用单个符号中的诸如用户特定信息的数据发送。

    METHOD FOR IMPROVING SHORT-TERM FAIRNESS AND EFFICIENCY IN WIRELESS LOCAL AREA NETWORKS
    58.
    发明申请
    METHOD FOR IMPROVING SHORT-TERM FAIRNESS AND EFFICIENCY IN WIRELESS LOCAL AREA NETWORKS 有权
    在无线局域网中改善短期公平和效率的方法

    公开(公告)号:US20160065330A1

    公开(公告)日:2016-03-03

    申请号:US14469246

    申请日:2014-08-26

    IPC分类号: H04L1/18 H04W72/08 H04L1/00

    摘要: A wireless communication device comprises a transceiver to communicate directly with one or more separate wireless devices in accordance with a WiFi communication protocol, and a controller. The controller is configured to initiate transmission of information using the transceiver upon expiration of a first contention window (CW) count value, detect whether the transmission is successful, change the CW count value to a second CW count value when the transmission is unsuccessful, and change the CW count value from the first CW count value to a third CW count value when the transmission is successful, wherein the third CW count value is a maximum value of one of the first CW count value divided by a specified binary number or a specified minimum CW count value.

    摘要翻译: 无线通信设备包括根据WiFi通信协议与一个或多个单独的无线设备直接通信的收发器和控制器。 控制器被配置为在第一争用窗口(CW)计数值到期时使用收发器发起信息的传输,检测传输是否成功,当传输不成功时将CW计数值改变为第二CW计数值;以及 当传输成功时,将CW计数值从第一CW计数值改变为第三CW计数值,其中第三CW计数值是第一CW计数值之一除以指定二进制数或指定的二进制数之一的最大值 最小CW计数值。

    LTE-U COMMUNICATION DEVICES AND METHODS FOR APERIODIC BEACON AND REFERENCE SIGNAL TRANSMISSION
    60.
    发明申请
    LTE-U COMMUNICATION DEVICES AND METHODS FOR APERIODIC BEACON AND REFERENCE SIGNAL TRANSMISSION 审中-公开
    LTE-U通信设备和APERIODIC BEACON和参考信号传输方法

    公开(公告)号:US20150373674A1

    公开(公告)日:2015-12-24

    申请号:US14669366

    申请日:2015-03-26

    IPC分类号: H04W72/04 H04W16/14

    摘要: An enhanced NodeB (eNB), user equipment (UE) and method of communicating using Long Term Evolution (LTE) licensed and unlicensed bands are generally described herein. The eNB may transmit a trigger signal to the UE. The trigger signal may be transmitted in the LTE unlicensed or licensed band and inform the UE of transmission of a reference signal from the eNB to the UE in the unlicensed band. The trigger signal may correspond to a single reference signal transmission or multiple periodic or consecutive reference signal transmissions. The trigger signal or a separate trigger signal may be used to inform the UE of a data transmission. The trigger signal may be transmitted at any point prior to or in the same subframe as the reference signal and the reference signal may be transmitted before, after or in the same subframe as the data.

    摘要翻译: 增强型节点B(eNB),用户设备(UE)以及使用长期演进(LTE)授权和非许可频带进行通信的方法。 eNB可以向UE发送触发信号。 触发信号可以在LTE未许可或许可频带中发送,并且通知UE在非许可频带中从eNB向UE传送参考信号。 触发信号可以对应于单个参考信号传输或多个周期性或连续参考信号传输。 触发信号或单独的触发信号可以用于通知UE数据传输。 触发信号可以在与参考信号相同或相同的子帧之前的任何点发送,并且参考信号可以在与数据相同的子帧之前或之后发送。