公开(公告)号：US20210176107A1

公开(公告)日：2021-06-10

申请号：US17052330

申请日：2019-05-24

申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

发明人： Rui HOU ,  Leonard REXBERG ,  Bo GÖRANSSON ,  Richard HELLBERG ,  Mats KLINGBERG ,  Stefan ENGSTRÖM

IPC分类号： H04L27/26 ,  H04L25/03 ,  H04B1/04

摘要： Systems and methods for ultra-wideband Crest Factor Reduction (CFR) are provided. In some embodiments, a method performed by a wireless node for performing CFR includes performing a first CFR step on a plurality of input signals at a first sampling rate with joint peak detection and band-specific noise shaping; and performing a second CFR step on the resulting plurality of input signals at a second sampling rate with joint peak detection and joint noise shaping where the second sampling rate is higher than the first sampling rate. In this way, Peak-to-Average Power Ratio (PAPR) reduction may be increased while the computational complexity is reduced.

公开(公告)号：US20210211265A1

公开(公告)日：2021-07-08

申请号：US17056540

申请日：2018-06-19

申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

发明人： Yuanjun XU ,  Bo GÖRANSSON

IPC分类号： H04L5/14 ,  H03F3/24 ,  H04B1/04

摘要： A radio unit for TDD multi-band operation in a wireless communication system is disclosed. The radio unit comprises a transmitting power amplifier for multi-band operation; one or more receiving amplifiers for multi-band operation and an antenna element. The radio unit further comprises one or more switch networks coupled in parallel between the power amplifier and the antenna element. Each of the one or more switch networks comprises one or more shunt switches coupled between an output of the transmitting power amplifier and a signal ground. Each of the one or more switch networks is configured to operate at a certain frequency band in transmitting or receiving mode and is controlled separately by a switching control unit based on un-synchronized TDD time slots configured according to user data traffic scheduling requirements.

公开(公告)号：US20200249339A1

公开(公告)日：2020-08-06

申请号：US16753420

申请日：2017-11-06

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Ming LI ,  Bo GÖRANSSON

IPC分类号： G01S13/32

摘要： Embodiments of the present disclosure provide a method, apparatus and computer program product for obstacle detection. A method implemented at a base station includes transmitting a positioning reference signal; receiving a transmission leakage signal and a reflection signal of the positioning reference signal; determining whether there exists an obstacle based on the reflection signal; and determining position information of the obstacle based on the transmission leakage signal and the reflection signal.

公开(公告)号：US20190372646A1

公开(公告)日：2019-12-05

申请号：US16477562

申请日：2017-01-18

申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

发明人： Carola FARONIUS ,  Bo GÖRANSSON ,  Fredrik HUSS ,  Magnus LUNDEVALL ,  Torbjörn WIGREN

IPC分类号： H04B7/06 ,  H04W52/24

摘要： A network node and a method performed by the network node for scheduling transmissions between the network node and one or more wireless devices in the same physical layer resources are provided. The method comprises selecting a beam for a transmission between the network node and a first one of the wireless devices; and determining if a portion of physical layer resources remains available after allocating portions of physical layer resources to a first set of one or more wireless devices within transmission range of the selected beam. The method further comprises if at least a portion of physical layer resources remains available, adjusting the selected beam such that a second set of one or more additional wireless devices not within transmission range of the initially selected beam are within transmission range of the adjusted beam.

公开(公告)号：US20210376902A1

公开(公告)日：2021-12-02

申请号：US17257416

申请日：2018-07-03

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Per BURSTRÖM ,  Arne SIMONSSON ,  Magnus THURFJELL ,  Kjell LARSSON ,  Sven-Olof JONSSON ,  Svante BERGMAN ,  Bo GÖRANSSON

IPC分类号： H04B7/06 ,  H04B17/345 ,  H04W24/08

摘要： A method performed by a network node for reducing Inter-Symbol Interference, ISI, in a wireless communications network. The network node provides a number of beams for transmissions between the network node and respective one or more first User Equipments, UEs, and a second UE. During a time period, network node obtains (301) measures of ISI per beam out of the number of beams related to transmissions between the network node and the one or more first UEs. The network node then reduces (302) the ISI in the wireless communications network 100 by obtaining a beam for transmission between the network node and the second UE. The beam is selected out of the number of beams by taking the obtained measures of ISI per beam into account.

公开(公告)号：US20130329656A1

公开(公告)日：2013-12-12

申请号：US13898119

申请日：2013-05-20

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Bo GÖRANSSON ,  Johan Bergman ,  Johan Hultell ,  Sairamesh Nammi

IPC分类号： H04W76/04

CPC分类号： H04W76/27 ,  H04L1/1671 ,  H04L1/1887 ,  H04L5/0073 ,  H04L2001/0093 ,  H04W48/12 ,  H04W76/40

摘要： A radio base station communicates with UEs on a shared control channel in a cell coverage area. A common control channel order, for transmission over the shared control channel for a group of multiple UEs in the cell, is associated with a common control channel order identifier and transmitted in the cell over the shared control channel. A UE in a shared cell coverage area receives and processes the common control channel order signal transmitted to the group of multiple UEs to detect the common control channel signal identifier. If the UE determines that common control channel signal identifier matches a common control channel signal identifier previously configured for or stored in each of the UEs in the group, then the UE processes the common control channel order and performs one or more actions in response to the processed common control channel order.

摘要翻译： 无线基站与小区覆盖区域中的共享控制信道上的UE进行通信。 用于在小区中的一组多个UE的共享控制信道上的传输的公共控制信道顺序与公共控制信道顺序标识符相关联，并通过共享控制信道在小区中发送。 共享小区覆盖区域中的UE接收并处理发送到多个UE组的公共控制信道命令信号，以检测公共控制信道信号标识符。 如果UE确定公共控制信道信号标识符与先前为组中的每个UE配置或存储的公共控制信道信号标识符匹配，则UE处理公共控制信道顺序并且响应于 处理通用控制通道顺序。

公开(公告)号：US20210258053A1

公开(公告)日：2021-08-19

申请号：US17054934

申请日：2018-05-16

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Bo GÖRANSSON

IPC分类号： H04B7/06 ,  H04W16/28

摘要： It is provided a method for configuring abeam direction of a set of antennas of an antenna site for a radio communication system. The method being performed in a beam direction configurer and comprises the steps of: obtaining a desired beam direction; configuring a coarse beam director, being configurable to provide only a fixed number of beam directions for the set of antennas, to provide a beam direction being closest to the desired beam direction; and configuring a fine beam director, being configurable more finely than the coarse beam director, to be in a fine beam direction such that a resulting beam direction for set of antennas, being a combination of the beam direction of the coarse beam director and the fine beam director, corresponds to the desired beam direction.

公开(公告)号：US20170041975A1

公开(公告)日：2017-02-09

申请号：US15105846

申请日：2013-12-18

申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

发明人： Ulf SKÄRBY ,  Farshid GHASEMZADEH ,  Bo GÖRANSSON

IPC分类号： H04W76/02 ,  H04W72/04 ,  H04B7/06

CPC分类号： H04W72/0453 ,  H04B7/0639 ,  H04B17/14 ,  H04W76/16

摘要： In a multi-standard base station site, a first base station module is configured to operate in multi-antenna transmission mode according to a first radio access technology by means of multiple transmitter branches. The first base station module is also configured to determine phase/time compensation information based on UE feedback information representative of precoding matrix index, PMI. The multi-standard base station site is configured to perform, for operation according to the first radio access technology, a first compensation for a relative phase/time error between at least two of the transmitter branches based on the phase/time compensation information. A second base station module is configured to operate for transmission according to a second radio access technology by means of at least two of the multiple transmitter branches. The multi-standard base station site is configured to perform, for operation according to the second radio access technology, a second compensation for a relative phase/time error between at least two of the transmitter branches based on the phase/time compensation information from the first base station module.

摘要翻译： 在多标准基站站点中，第一基站模块被配置为通过多个发射机分支根据第一无线电接入技术在多天线传输模式中操作。 第一基站模块还被配置为基于表示预编码矩阵索引PMI的UE反馈信息来确定相位/时间补偿信息。 多标准基站站点被配置为根据第一无线电接入技术对基于相位/时间补偿信息的至少两个发射机分支之间的相对相位/时间误差进行第一补偿。 第二基站模块被配置为借助于多个发射机分支中的至少两个来根据第二无线电接入技术进行传输。 多标准基站站点被配置为执行根据第二无线电接入技术的操作，用于基于来自所述第二无线电接入技术的相位/时间补偿信息对发射机分支中的至少两个之间的相对相位/时间误差进行第二补偿 第一基站模块。

公开(公告)号：US20170019862A1

公开(公告)日：2017-01-19

申请号：US15123921

申请日：2014-03-07

申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

发明人： Bo GÖRANSSON ,  Tomas ANDREASON

IPC分类号： H04W52/24 ,  H04W16/32 ,  H04W52/38 ,  H04B7/04

CPC分类号： H04W52/244 ,  H04B7/0456 ,  H04B7/0617 ,  H04L5/0032 ,  H04W16/32 ,  H04W52/146 ,  H04W52/243 ,  H04W52/38

摘要： Network node and method therein for inter cell interference coordination. A method in a network node comprises estimating spatial properties of a radio channel between a base station and at least part of an underlay/neighboring cell based on information about spatial properties of a radio channel between the base station and a respective at least one user equipment (UE) located in a region associated with inter cell interference in relation to the underlay/neighboring cell. A transmission is adapted to a UE, served by the base station in a reduced power subframe, based on a correlation between the spatial properties of the radio channel and estimated spatial properties of a radio channel between the base station and the UE. The method enables control of interference subjected towards the underlay/neighboring cell, caused by downlink transmission to the UE.

摘要翻译： 网络节点及其方法，用于小区间干扰协调。 网络节点中的方法包括基于关于基站和相应的至少一个用户设备之间的无线电信道的空间属性的信息来估计基站与底层/相邻小区的至少一部分之间的无线电信道的空间属性 （UE），其位于与所述底层/相邻小区相关联的小区间干扰相关联的区域中。 基于无线电信道的空间属性与基站和UE之间的无线电信道的估计的空间属性之间的相关性，传输适应于由基站在减小功率子帧中服务的UE。 该方法能够控制由下行链路向UE发送的对底层/相邻小区的干扰。

公开(公告)号：US20160301455A1

公开(公告)日：2016-10-13

申请号：US15022275

申请日：2015-11-12

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Sairamesh Nammi ,  Mattias FRENNE ,  Bo GÖRANSSON ,  Johan BERGMAN

IPC分类号： H04B7/04 ,  H04B7/06

CPC分类号： H04B7/0469 ,  H04B7/0478 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/0645

摘要： A method by a network node in a communications system includes determining a codebook subset restriction indicating a reduced set of precoding matrices out of an original set of precoding matrices in an original codebook. The full set of Precoding Matrix Indicator, PMI, bits is used to identify the original set of precoding matrices in the original codebook. The method includes determining a reduced set of Precoding Matrix Indicator, PMI, bits for use in a feedback channel based on a number of entries in the reduced set of precoding matrices. The reduced set of PMI bits has fewer bits than the full set of PMI bits. Related user equipments, methods by user equipments and network nodes are disclosed.

摘要翻译： 由通信系统中的网络节点的方法包括：确定指示原始码本中的原始预编码矩阵集合中的预编码矩阵的缩减集的码本子集限制。 预编码矩阵指示符（PMI）的整组用于识别原始码本中的原始预编码矩阵集合。 该方法包括基于减少的预编码矩阵集合中的条目数量来确定用于反馈信道的预编码矩阵指示符PMI的缩减集合。 PMI比特的缩减集比位全部的PMI比特少。 公开了用户设备和网络节点的相关用户设备，方法。