公开(公告)号：US20180351776A1

公开(公告)日：2018-12-06

申请号：US15779059

申请日：2016-12-01

Applicant: ZTE Wistron Telecom AB ,  ZTE (TX) INC,

Inventor： Aijun CAO ,  Juquan MAO ,  Mhamoud Alfa ABDULLAHI ,  Pei XIAO ,  Yonghong GAO ,  Jan JOHANSSON

IPC: H04L27/38 ,  H04L27/26 ,  H04L25/06

CPC classification number: H04L27/38 ,  H03M13/3905 ,  H04L25/067 ,  H04L27/2647

Abstract: A method and system for demodulating high-order Quadrature Amplitude Modulation (QAM) signals is disclosed. In one embodiment, the system includes a cyclic prefix (CP) removal unit for removing a CP from a received signal to provide a first intermediate signal, wherein the first intermediate signal comprises a plurality of bits; a fast Fourier transform (FFT) unit configured to convert the first intermediate signal into a frequency domain; a soft de-mapper configured to derive a plurality of soft bits based on log-likelihood estimates of the plurality of bits, wherein the soft de-mapper derives each soft bit by using a single linear function to approximate each soft bit; and a decoder configured to decode a signal derived from the soft de-mapper into information.

公开(公告)号：US20160157194A1

公开(公告)日：2016-06-02

申请号：US14906863

申请日：2014-07-21

Applicant: ZTE WISTRON TELECOM AB

Inventor： Patrick SVEDMAN ,  Thorsten SCHIER ,  Yonghong GAO ,  Jan JOHANSSON ,  Aijun CAO ,  Bojidar HADJISKI

IPC: H04W56/00

CPC classification number: H04W56/001 ,  H04B7/2656 ,  H04W56/00

Abstract: Provided is a synchronization cell used in a wireless communication system. Also provided is an SCI, synchronization cell indicator. A mobile network includes a processor that identifies one or more suitable synchronization cells for a user equipment (UE) and sends the SCI to the UE so that the UE can at least partially synchronize with a synchronization cell. The SCI advantageously includes a cell-id and other synchronization parameters and characteristics in various embodiments. The SCI may include a cell-directed UE action for the UE to carry out with a target cell. The UE carries out cell-directed UE actions with the target cell either after having obtained synchronization with the synchronization cell or to continue the synchronization process.

Abstract translation: 提供了一种在无线通信系统中使用的同步单元。 还提供了SCI，同步单元指示器。 移动网络包括识别用户设备（UE）的一个或多个合适的同步小区并将SCI发送到UE的处理器，使得UE能够与同步小区至少部分同步。 在各种实施例中，SCI有利地包括小区id和其他同步参数和特性。 SCI可以包括用于UE执行目标小区的小区定向UE动作。 在已经获得与同步小区的同步之后，UE与目标小区进行小区定向的UE动作或继续同步过程。

公开(公告)号：US20200344809A1

公开(公告)日：2020-10-29

申请号：US16077989

申请日：2017-02-10

Applicant: ZTE Wistron Telecom AB ,  ZTE (TX) INC.

Inventor： Patrick SVEDMAN ,  Yonghong GAO ,  Jan JOHANSSON ,  Thorsten SCHIER

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/04 ,  H04B7/024 ,  H04W88/02 ,  H04W88/08 ,  H04W28/08

Abstract: A device and method and system for dynamically processing a random access response (RAR) signal to perform wireless communications is disclose. In some embodiments, the device is configured to receive one or multiple random access response (RAR) signals, wherein when the processor receives multiple RAR signals, it selects a RAR signal and responses to the selected RAR signal based on a content of the one or multiple RAR signals and proceeds with subsequent wireless communication using information contained in the selected RAR signal.

公开(公告)号：US20160269990A1

公开(公告)日：2016-09-15

申请号：US15033887

申请日：2014-10-31

Applicant: ZTE WISTRON TELECOM AB ,  ZTE (TX) INC.

Inventor： Patrick SVEDMAN ,  Thorsten SCHIER ,  Yonghong GAO ,  Jan JOHANSSON ,  Aijun CAO ,  Bojidar HADJISKI

IPC: H04W52/02 ,  H04W76/04 ,  H04L5/00 ,  H04W16/32

CPC classification number: H04W52/0206 ,  H04L5/0048 ,  H04W16/32 ,  H04W76/28 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/24

Abstract: A new approach to generating a probing signal by a cell in a heterogeneous network (HetNet) deployment is proposed. A small cell in the HetNet may be switched off by a base station when the small cell is not needed. The small cell is configured to alternate between an off-state and on-state. The small cell maintains the on-state for a predetermined probing period and maintains the off-state for a predetermined off period. The small cell may switch between the on-state and the off-state periodically. The small cell may be activated during a predetermined off period to transmit data to a user device.

Abstract translation: 提出了一种在异构网络（HetNet）部署中由单元产生探测信号的新方法。 当不需要小单元时，HetNet中的一个小单元可能被基站关闭。 小单元被配置为在断开状态和导通状态之间交替。 小单元在预定的探测周期内维持导通状态，并将断开状态维持预定的关闭周期。 小单元可以周期性地在导通状态和断开状态之间切换。 小单元可以在预定的关闭周期期间被激活，以将数据传送到用户设备。

公开(公告)号：US20160218837A1

公开(公告)日：2016-07-28

申请号：US14844975

申请日：2014-03-14

Applicant: ZTE Wistron Telecom AB

Inventor： Patrick SVEDMAN ,  Jan JOHANSSON ,  Thorsten SCHIER ,  Bojidar HADJISKI ,  Aijun CAO ,  Yonghong GAO

IPC: H04L1/18 ,  H04W72/12

CPC classification number: H04L1/1861 ,  H04L1/1812 ,  H04L1/1819 ,  H04L1/1822 ,  H04L1/1887 ,  H04W72/1284 ,  H04W72/1289

Abstract: A method and system for transmitting data to user equipment (UE) is disclosed. In one embodiment, the system includes: a downlink transmitter configured to transmit a first data unit to the UE using a first transmission process assigned to the UE; an uplink receiver configured to receive a status signal indicating either a successful or unsuccessful reception of the first data unit by the UE; and a downlink scheduler, communicatively coupled to the downlink transmitter and uplink receiver, and configured to receive the status signal from the uplink receiver, wherein the downlink scheduler is further configured to schedule transmission of a second data unit to the UE and transmit a corresponding scheduling decision to the downlink transmitter prior to receiving the status signal, and wherein upon receiving the scheduling decision, the downlink transmitter transmits the second data unit to the UE using a second transmission process assigned to the UE.

Abstract translation: 公开了一种用于向用户设备（UE）发送数据的方法和系统。 在一个实施例中，系统包括：下行链路发射机，被配置为使用分配给UE的第一传输过程向UE发送第一数据单元; 上行链路接收器，被配置为接收指示所述UE对所述第一数据单元的成功或不成功接收的状态信号; 以及下行链路调度器，通信地耦合到所述下行链路发射机和上行链路接收机，并且被配置为从所述上行链路接收机接收所述状态信号，其中所述下行链路调度器还被配置为调度第二数据单元到所述UE的传输并且发送相应的调度 在接收到所述状态信号之前向所述下行链路发射机做出决定，并且其中，在接收到所述调度决定时，所述下行链路发射机使用分配给所述UE的第二传输处理向所述UE发送所述第二数据单元。

公开(公告)号：US20150333876A1

公开(公告)日：2015-11-19

申请号：US14651572

申请日：2013-12-11

Applicant: ZTE WISTRON TELECOM AB ,  ZTE (TX) INC.

Inventor： Patrick SVEDMAN ,  Jan JOHANSSON ,  Thorsten SCHIER ,  Bojidar HADJISKI ,  Aijun CAO ,  Yonghong GAO

IPC: H04L1/18

CPC classification number: H04L1/1819 ,  H04L1/0065 ,  H04L1/1896

Abstract: A system and method of responding to a receiver outage event, which includes: determining if a receiver outage event has occurred; if a receiver outage event has occurred, discarding soft bits that were corrupted due to the outage event; and if a received first redundancy version (RV) of coded bits corrupted by the outage event was decoded incorrectly, sending a message to a transmitter in response to the outage event, and thereafter receiving a second RV of coded bits retransmitted by the transmitter in response to the message.

Abstract translation: 一种响应于接收器中断事件的系统和方法，包括：确定是否发生了接收器中断事件; 如果发生接收器中断事件，则丢弃由于中断事件而损坏的软位; 并且如果由中断事件损坏的接收到的编码比特的第一冗余版本（RV）被解码不正确，则响应于中断事件向发射机发送消息，然后响应于接收到由发射机重发的编码比特的第二RV 给消息。

公开(公告)号：US20170353219A1

公开(公告)日：2017-12-07

申请号：US15611639

申请日：2017-06-01

Applicant: ZTE Wistron Telecom AB ,  University of Bremen

Inventor： Armin DEKORSY ,  Henning PAUL ,  Dirk WUBBEN ,  Guang XU ,  Aijun CAO ,  Thorsten SCHIER ,  Yonghong GAO ,  Jan JOHANSSON ,  Patrick SVEDMAN

IPC: H04B7/0456 ,  H04B7/024

CPC classification number: H04B7/0456 ,  H04B7/024

Abstract: Systems and methods for small cell distributed precoding. In one embodiment, a method includes: receiving remote precoding information from a plurality of small cells; sending local precoding information to the plurality of small cells; and transmitting an output signal as part of a joint transmission with the plurality of small cells in response to the receiving the remote precoding information, wherein the output signal is based on the remote precoding information and a user equipment data vector.

公开(公告)号：US20170181065A1

公开(公告)日：2017-06-22

申请号：US15127374

申请日：2015-03-26

Applicant: ZTE Wistron Telecom AB

Inventor： Patrick SVEDMAN ,  Yonghong GAO ,  Jan JOHANSSON ,  Thorsten SCHIER ,  Aijun CAO ,  Bojidar HADJISKI

IPC: H04W48/12 ,  H04W36/00 ,  H04W56/00 ,  H04J11/00 ,  H04W72/08

CPC classification number: H04W48/12 ,  H04J11/00 ,  H04J11/0073 ,  H04J11/0076 ,  H04J11/0079 ,  H04W36/0083 ,  H04W56/001 ,  H04W72/085

Abstract: A serving cell configures a search window within which a UE searches to find a discovery burst. The discovery burst may include PSS, SSS, DS, CSI-RS or other signals. The UE detects synchronization signals and determines if the synchronization signals are part of the discovery burst by detecting signal properties to distinguish them from legacy or other synchronization signals. One property is the time difference between a PSS and an SSS in a discovery burst. Other properties are the frequency difference between a PSS and an SSS, and the sequence of the synchronization signals. If the UE determines that the synchronization signals are part of the discovery burst, the UE performs RRM measurements on other signals in the discovery burst, and reports the measurements results to a serving cell. The serving cell decides if a UE should be handed over to the measured cell based on the measurement reports.

公开(公告)号：US20160301493A1

公开(公告)日：2016-10-13

申请号：US15100936

申请日：2014-12-11

Applicant: ZTE WISTRON TELECOM AB ,  ZTE (TX) INC.

Inventor： Aijun CAO ,  Yonghong GAO ,  Thorsten SCHIER ,  Jan JOHANSSON ,  Patrick SVEDMAN ,  Bojidar HADJISKI

IPC: H04J11/00 ,  H04W56/00 ,  H04L5/00

CPC classification number: H04J11/0079 ,  H04J11/0073 ,  H04J11/0076 ,  H04L5/0048 ,  H04W56/001

Abstract: A method of small cell discovery in a wireless network deployment using a Channel State Information Reference System (CSI-RS) is proposed. First, a wireless communication system allocates pairs of resource elements in each resource block of a subframe to a CSI-RS configuration. A first of two orthogonal cover codes is applied to the first CSI-RS. The CSI-RS is transmitted by a small cell to a user equipment (UE). The UE utilizes the CSI-RS to perform small cell discovery and measurement of the small cell.

Abstract translation: 提出了使用信道状态信息参考系（CSI-RS）的无线网络部署中的小小区发现的方法。 首先，无线通信系统将子帧的每个资源块中的资源元素对分配给CSI-RS配置。 两个正交覆盖码中的第一个被应用于第一CSI-RS。 CSI-RS由小小区发送到用户设备（UE）。 UE利用CSI-RS对小小区进行小小区发现和测量。

公开(公告)号：US20170181067A1

公开(公告)日：2017-06-22

申请号：US15127370

申请日：2015-03-16

Applicant: ZTE Wistron Telecom AB

Inventor： Thorsten SCHIER ,  Patrick SVEDMAN ,  Aijun CAO ,  Jan JOHANSSON ,  Yonghong GAO ,  Bojidar HADJISKI

IPC: H04W48/16 ,  H04W72/00 ,  H04W24/10 ,  H04W8/00 ,  H04W72/04

CPC classification number: H04W48/16 ,  H04W8/005 ,  H04W24/02 ,  H04W24/10 ,  H04W36/0085 ,  H04W36/0088 ,  H04W48/08 ,  H04W72/005 ,  H04W72/0446 ,  H04W84/045 ,  Y02D70/00 ,  Y02D70/1262

Abstract: Provided is a method and wireless communication system that includes a HetNet, a serving cell with an associated coverage area and multiple additional low power nodes (LPNs) deployed in one or more clusters of cells in the coverage area. The LPNs transmit an associated discovery signal based on the timing of the associated small cell. The serving cell is configured to determine the timing of the cells and therefore the transmission pattern of the discovery signals and the serving cell configures measurement gaps such that the discovery signals are transmitted during the measurement gaps. The network is adapted to accomplish this for various degrees of granularity and timing measurement inaccuracies by placing the measurement gaps and/or adjusting the discovery signal (DS) transmission scheme accordingly.