Uplink scheduling with power control command in an FDD half-duplex network

    公开(公告)号:US09949220B2

    公开(公告)日:2018-04-17

    申请号:US15046684

    申请日:2016-02-18

    CPC classification number: H04W52/58 H04W52/08 H04W52/146

    Abstract: An efficient way to perform power control and to communicate data with a base station is desired. According to an aspect, the apparatus generates a downlink grant for a device, the downlink grant indicating to the device subsets of uplink resources allocated for transmitting data segments and subsets of downlink resources for receiving power control commands for respective data segments, the subsets of the uplink resources being non-concurrent with the subsets of the downlink resources. The apparatus transmits the downlink grant to the device. The apparatus receives, from the device, a first uplink transmission in a first subset of the uplink resources based on the transmitted downlink grant. The apparatus generates a first power control command based on the received first uplink transmission. The apparatus transmits, to the device, the first power control command in a first subset of the downlink resources. The apparatus may be a base station.

    OPTIMIZED SECONDARY SYNCHRONIZATION SIGNAL
    537.
    发明申请

    公开(公告)号:US20170353290A1

    公开(公告)日:2017-12-07

    申请号:US15367475

    申请日:2016-12-02

    Abstract: Methods, systems, and devices for wireless communication are described. A wireless communications system operating in millimeter wave (mmW) spectrum may utilize synchronization signals for beam tracking. A synchronization signal (e.g., primary synchronization signals (PSS), secondary synchronization signals (SSS), etc.), beam reference signal, and/or control signal may be designed to facilitate beam tracking. A synchronization signal structure based on a repeated sequence in the time domain may facilitate searching for different beams in a timely manner. In some cases, the repeated synchronization signal structure may be achieved by using a larger tone spacing, and hence having shorter symbol duration and repeating the short symbols in the time domain. The repeated structure may be further used to encode additional information (e.g., facilitated by the resulting additional degrees of freedom). Additionally or alternatively, a synchronization signal (e.g., SSS) may be discrete Fourier transform (DFT) pre-coded to achieve better peak-to-average-power-ratio (PAPR).

    Resource allocation for distributed device-to-device synchronization
    538.
    发明授权
    Resource allocation for distributed device-to-device synchronization 有权
    分布式设备到设备同步的资源分配

    公开(公告)号:US09307510B2

    公开(公告)日:2016-04-05

    申请号:US14457889

    申请日:2014-08-12

    CPC classification number: H04W56/0045 H04W56/0015 H04W56/002

    Abstract: Methods, systems, and devices are described for synchronizing a user equipment (UE) in a device-to-device communications network. The UE may scan for a synchronization signal transmitted from another UE in the network. A synchronization frame including a plurality of slots to use may be identified based at least in part on a result of the scanning. The identified synchronization frame may be analyzed to select a slot to use from the plurality of slots of the synchronization frame. A synchronization signal may be transmitted using the identified synchronization frame and the selected slot.

    Abstract translation: 描述了用于使设备到设备通信网络中的用户设备(UE)同步的方法,系统和设备。 UE可以扫描从网络中的另一个UE发送的同步信号。 可以至少部分地基于扫描的结果来识别包括要使用的多个时隙的同步帧。 可以分析所识别的同步帧以从同步帧的多个时隙中选择要使用的时隙。 可以使用所识别的同步帧和所选择的时隙来发送同步信号。

    DISTRIBUTED DEVICE-TO-DEVICE SYNCHRONIZATION
    539.
    发明申请
    DISTRIBUTED DEVICE-TO-DEVICE SYNCHRONIZATION 审中-公开
    分布式设备到设备同步

    公开(公告)号:US20150341873A1

    公开(公告)日:2015-11-26

    申请号:US14286354

    申请日:2014-05-23

    CPC classification number: H04W56/001 H04W56/0015 H04W72/02 H04W72/04

    Abstract: Methods, systems, and devices are described that provide for D2D synchronization. The methods, systems, and/or devices may include tools and techniques that provide for synchronizing a mobile device based on detection of a reliability alarm. A reliability alarm may be used between mobile devices, which is transmitted and/or received on specific D2D resources. Since the resources are reserved for the reliability alarm, a mobile device which was previously isolated from network synchronization will be able to receive the reliability alarm that a reliable synchronization signal is close when it moves within range of a reliable device. Once a reliability alarm is received the mobile device may free other resources to allow it to receive synchronization signals from the reliable devices. The mobile device may then synchronize with the network based on the received synchronization signals and transmit its own reliability alarm for subsequent isolated devices to use.

    Abstract translation: 描述了提供D2D同步的方法,系统和设备。 方法,系统和/或设备可以包括基于可靠性警报的检测来提供用于同步移动设备的工具和技术。 在特定的D2D资源上发送和/或接收的移动设备之间可以使用可靠性警报。 由于资源被保留用于可靠性报警,因此先前与网络同步隔离的移动设备将能够接收到可靠的同步信号在可靠设备的范围内移动时关闭的可靠性报警。 一旦接收到可靠性报警,移动设备就可以释放其它资源,以允许其接收来自可靠设备的同步信号。 然后,移动设备可以基于接收到的同步信号与网络同步,并且为随后的隔离设备发送其自己的可靠性警报以供使用。

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