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1. 发明申请

US20100135423A1 Determining a Frequency Error in a Receiver of a Wireless Communications System 有权
标题翻译：确定无线通信系统的接收机中的频率误差
公开(公告)号：US20100135423A1
公开(公告)日：2010-06-03
申请号：US12598613
申请日：2008-05-05
申请人： Bengt Lindoff , Leif Wilhelmsson , Fredrik Nordström
发明人： Bengt Lindoff , Leif Wilhelmsson , Fredrik Nordström
IPC分类号： H04L27/28 , H04L27/06
CPC分类号： H04L27/2657 , H04L27/2613 , H04L27/2675
摘要： A frequency error of received signals in an OFDM receiver of a wireless communications system is determined. Symbols of a given duration are transmitted as cells on sub-carrier frequencies; and some of the cells are pilot cells modulated with reference information. The method comprises the steps of selecting at least three pilot cells (p0, p1, p2) from different symbols and different sub-carriers; determining the symbol and the sub-carrier on which each pilot cell is transmitted; determining for each pilot cell a phase difference between received and generated signals; calculating therefrom a change in phase difference (Φx) caused by the frequency error; and calculating the frequency error from the calculated change in phase difference (Φx). In this way a receiver capable of determining a frequency error also in situations where only a short data burst, such as a single resource block, is available for the estimation is provided.
摘要翻译：确定无线通信系统的OFDM接收机中的接收信号的频率误差。给定持续时间的符号作为小区在子载波频率上发送; 并且一些小区是用参考信息调制的导频小区。该方法包括从不同符号和不同子载波中选择至少三个导频小区（p0，p1，p2）的步骤; 确定发送每个导频小区的符号和子载波; 为每个导频小区确定接收和产生的信号之间的相位差; 由此计算由频率误差引起的相位差（Φx）的变化; 并根据计算的相位差变化（Φx）计算频率误差。以这种方式，能够在只有短数据突发（例如单个资源块）可用于估计的情况下也能够确定频率误差的接收机被提供。

2. 发明授权

US08270509B2 Determining a frequency error in a receiver of a wireless communications system 有权
标题翻译：确定无线通信系统的接收机中的频率误差
公开(公告)号：US08270509B2
公开(公告)日：2012-09-18
申请号：US12598613
申请日：2008-05-05
申请人： Bengt Lindoff , Leif Wilhelmsson , Fredrik Nordström
发明人： Bengt Lindoff , Leif Wilhelmsson , Fredrik Nordström
IPC分类号： H04K1/10
CPC分类号： H04L27/2657 , H04L27/2613 , H04L27/2675
摘要： A frequency error of received signals in an OFDM receiver of a wireless communications system is determined. Symbols of a given duration are transmitted as cells on sub-carrier frequencies; and some of the cells are pilot cells modulated with reference information. The method comprises the steps of selecting at least three pilot cells (p0, p1, p2) from different symbols and different sub-carriers; determining the symbol and the sub-carrier on which each pilot cell is transmitted; determining for each pilot cell a phase difference between received and generated signals; calculating therefrom a change in phase difference (Φx) caused by the frequency error; and calculating the frequency error from the calculated change in phase difference (Φx). In this way a receiver capable of determining a frequency error also in situations where only a short data burst, such as a single resource block, is available for the estimation is provided.
摘要翻译：确定无线通信系统的OFDM接收机中的接收信号的频率误差。给定持续时间的符号作为小区在子载波频率上发送; 并且一些小区是用参考信息调制的导频小区。该方法包括从不同符号和不同子载波中选择至少三个导频小区（p0，p1，p2）的步骤; 确定发送每个导频小区的符号和子载波; 为每个导频小区确定接收和产生的信号之间的相位差; 由此计算由频率误差引起的相位差（Φx）的变化; 并根据计算的相位差变化（Φx）计算频率误差。以这种方式，能够在只有短数据突发（例如单个资源块）可用于估计的情况下也能够确定频率误差的接收机被提供。

3. 发明申请

US20120219041A1 Operation of user equipment when control and data information are supplied by different radio units 有权
标题翻译：控制和数据信息由不同的无线电单元提供时，用户设备的操作
公开(公告)号：US20120219041A1
公开(公告)日：2012-08-30
申请号：US13036523
申请日：2011-02-28
申请人： Bengt Lindoff , Fredrik Nordström , Leif Wilhelmsson
发明人： Bengt Lindoff , Fredrik Nordström , Leif Wilhelmsson
IPC分类号： H04B1/38
CPC分类号： H04L25/03343 , H04L27/2646 , H04W56/0015 , H04W56/0045
摘要： An Orthogonal Frequency Division Multiplexing (OFDM) symbol for transmission from a non-reference transceiver to a user equipment (UE) in a mobile communication system is generated by ascertaining a general timing for transmission of OFDM symbols, wherein the general timing is associated with a reference transceiver. A UE timing relative to the general timing is ascertained. An initial resource element (RE) value is adjusted by a pre-compensating amount to obtain a pre-compensated RE value, wherein the pre-compensating amount is based on the UE timing relative to the general timing. The pre-compensated resource element value is supplied as one of a plurality of values to be transmitted. An IFFT is performed on the plurality of values to be transmitted to obtain pre-compensated initial signal information. A cyclic prefix is appended to the pre-compensated initial signal information to form an OFDM symbol for transmission from the non-reference transceiver to the UE.
摘要翻译：通过确定用于OFDM符号的传输的一般定时来生成用于在移动通信系统中从非参考收发器到用户设备（UE）的传输的正交频分复用（OFDM）符号，其中，一般定时与参考收发器。确定相对于一般定时的UE定时。通过预补偿量来调整初始资源元素（RE）值以获得预补偿RE值，其中预补偿量基于相对于一般定时的UE定时。预补偿资源元素值被提供为要发送的多个值之一。对要发送的多个值执行IFFT以获得预补偿的初始信号信息。将循环前缀附加到预补偿的初始信号信息以形成用于从非参考收发器到UE的传输的OFDM符号。

4. 发明授权

US08023600B2 Method and apparatus for interference rejection combining and detection 有权
标题翻译：用于干扰抑制组合和检测的方法和装置
公开(公告)号：US08023600B2
公开(公告)日：2011-09-20
申请号：US12138743
申请日：2008-06-13
申请人： Bengt Lindoff , Johan Nilsson , Fredrik Nordström , Leif Wilhelmsson
发明人： Bengt Lindoff , Johan Nilsson , Fredrik Nordström , Leif Wilhelmsson
IPC分类号： H04L1/02 , H03D1/04 , H04B15/00
CPC分类号： H04B7/086 , H04B17/345 , H04J11/005 , H04J11/0093 , H04L25/0204 , H04L25/022 , H04L25/0224 , H04L25/0242
摘要： A multi-branch OFDM receiver combines diversity signals received over different receiver branches using interference rejection combining. The receiver generates first channel estimates associated with a serving base station, second channel estimates associated with at least one non-serving base station, and a time offset between the serving base station and non-serving base station. The receiver computes a noise covariance matrix based on the second channel estimates and the time offset, and then combines the diversity signals received over different branches using the first channel estimates and the noise covariance matrix.
摘要翻译：多分支OFDM接收机使用干扰抑制组合来组合在不同接收机分支上接收的分集信号。接收机产生与服务基站相关联的第一信道估计，与至少一个非服务基站相关联的第二信道估计，以及服务基站与非服务基站之间的时间偏移。接收机基于第二信道估计和时间偏移来计算噪声协方差矩阵，然后使用第一信道估计和噪声协方差矩阵组合在不同分支上接收的分集信号。

5. 发明授权

US08594210B2 Method and apparatus for positioning an FFT-window in an OFDM-receiver 有权
标题翻译：用于在OFDM接收机中定位FFT窗口的方法和装置
公开(公告)号：US08594210B2
公开(公告)日：2013-11-26
申请号：US12746518
申请日：2008-12-08
申请人： Leif Wilhelmsson , Lars Björkman , Fredrik Nordström
发明人： Leif Wilhelmsson , Lars Björkman , Fredrik Nordström
IPC分类号： H04L27/28
CPC分类号： H04L27/2662 , H04L5/0007 , H04L25/0216 , H04L25/022 , H04L25/0232 , H04L27/2657 , H04L27/2665
摘要： Methods for positioning an FFT-window in an OFDM-receiver are disclosed as well as electronic apparatuses and computer program products for performing the methods. The method comprises determining a position of the FFT-window in relation to one or more OFDM-symbols of a received OFDM-signal, using the position of the FFT-window to obtain a first OFDM-symbol from the received OFDM-signal, and applying an FFT to the first OFDM-symbol to produce an FFT-output signal. The method also comprises determining a frequency dependent phase rotation component of the FFT-output signal, and removing the determined frequency dependent phase rotation component from the FFT-output signal to obtain a compensated FFT-output signal. A delay spread estimate is calculated based on at least one of the FFT-output signal and the compensated FFT-output signal, and the position of the FFT-window is adjusted based on at least the determined frequency dependent phase rotation component and the calculated delay spread estimate.
摘要翻译：公开了在OFDM接收机中定位FFT窗口的方法以及用于执行方法的电子设备和计算机程序产品。该方法包括使用FFT窗口的位置从接收的OFDM信号中获得第一OFDM符号来确定FFT窗口相对于接收的OFDM信号的一个或多个OFDM符号的位置，以及对第一OFDM符号应用FFT以产生FFT输出信号。该方法还包括确定FFT输出信号的频率相关相位旋转分量，以及从FFT输出信号中去除所确定的频率相关相位旋转分量以获得经补偿的FFT输出信号。基于FFT输出信号和经补偿的FFT输出信号中的至少一个来计算延迟扩展估计，并且至少基于所确定的频率相关相位旋转分量和所计算的延迟来调整FFT窗口的位置传播估计。

6. 发明申请

US20150249937A1 METHOD FOR D2D RADIOCOMMUNICATION 有权
标题翻译： D2D无线电通信方法
公开(公告)号：US20150249937A1
公开(公告)日：2015-09-03
申请号：US14430216
申请日：2012-09-28
申请人： Bengt Lindoff , Qianxi Lu , Qingyu Miao , Leif Wilhelmsson
发明人： Bengt Lindoff , Qianxi Lu , Qingyu Miao , Leif Wilhelmsson
IPC分类号： H04W36/00 , H04W36/16 , H04W72/04 , H04W76/02 , H04W4/00
CPC分类号： H04W36/0011 , H04W4/80 , H04W36/00 , H04W36/165 , H04W72/0453 , H04W76/14 , H04W84/042
摘要： The present disclosure relates to a method of a first radio device in non-network assisted device-to-device (D2D) communication with a second radio device using a first frequency resource and a first communication protocol. The method comprises determining that the first radio device is within coverage of a cellular network. The method also comprises connecting to the cellular network. The method also comprises sending a message to the second radio device, informing said second radio device that the first radio device is within coverage of the cellular network. The method also comprises receiving a message from the cellular network comprising information about a second frequency resource and a second communication protocol. The method also comprises initiating a handover of the D2D communication from the first frequency resource and communication protocol to the second frequency resource and communication protocol.
摘要翻译：本公开涉及在使用第一频率资源和第一通信协议的第二无线电设备的非网络辅助设备到设备（D2D）通信中的第一无线电设备的方法。该方法包括确定第一无线电设备在蜂窝网络的覆盖范围内。该方法还包括连接到蜂窝网络。该方法还包括向第二无线电设备发送消息，通知所述第二无线电设备第一无线电设备在蜂窝网络的覆盖范围内。该方法还包括从蜂窝网络接收包括关于第二频率资源和第二通信协议的信息的消息。该方法还包括启动D2D通信从第一频率资源和通信协议到第二频率资源和通信协议的切换。

7. 发明申请

US20150223257A1 INTERFERENCE MANAGEMENT FOR NETWORK ASSISTED DEVICE-TO-DEVICE COMMUNICATION 审中-公开
标题翻译：网络辅助设备到设备通信的干扰管理
公开(公告)号：US20150223257A1
公开(公告)日：2015-08-06
申请号：US14400681
申请日：2012-06-13
申请人： Leif Wilhelmsson , Gabor Fodor , Bengt Lindoff
发明人： Leif Wilhelmsson , Gabor Fodor , Bengt Lindoff
IPC分类号： H04W72/08 , H04W24/02 , H04W76/02 , H04W72/04
CPC分类号： H04W72/082 , H04W24/02 , H04W72/0406 , H04W76/14
摘要： A method of a first wireless communication device adapted to perform device-to-device communication with a third device is disclosed, wherein a second device causes interference to the device-to-device communication. The method comprises determining an interference criterion associated with the second wireless communication device, and transmitting an interference management request message related to the interference criterion to a network node. A corresponding method of a network node adapted to provide assistance of device-to-device communication is also disclosed. The method comprises receiving the interference management request message related to the interference criterion from the first wireless communication device, and transmitting an interference control message to at least one of the first wireless communication device, the second wireless communication device, and the third wireless communication device. Corresponding computer program product, arrangements, wireless communication device and network node are also disclosed.
摘要翻译：公开了一种适于与第三设备执行设备到设备通信的第一无线通信设备的方法，其中第二设备对设备到设备通信造成干扰。所述方法包括确定与所述第二无线通信设备相关联的干扰标准，以及将与所述干扰标准相关的干扰管理请求消息发送到网络节点。还公开了适于提供设备到设备通信的辅助的网络节点的对应方法。该方法包括从第一无线通信设备接收与干扰标准相关的干扰管理请求消息，并且向第一无线通信设备，第二无线通信设备和第三无线通信设备中的至少一个发送干扰控制消息。还公开了相应的计算机程序产品，布置，无线通信设备和网络节点。

8. 发明授权

US08744468B2 Soft cell inter-layer interference handling 有权
标题翻译：软细胞层间干扰处理
公开(公告)号：US08744468B2
公开(公告)日：2014-06-03
申请号：US13640337
申请日：2012-07-30
申请人： Stefan Parkvall , David Astely , Erik Dahlman , David Hammarwall , Bengt Lindoff , Stefano Sorrentino , Leif Wilhelmsson
发明人： Stefan Parkvall , David Astely , Erik Dahlman , David Hammarwall , Bengt Lindoff , Stefano Sorrentino , Leif Wilhelmsson
IPC分类号： H04W72/04
CPC分类号： H04W72/1231 , H04W52/143 , H04W52/244 , H04W72/0446 , Y02D70/00
摘要： In a heterogeneous cell deployment a mobile terminal may need to receive control data transmissions from a macro node at the same time as a pico node is transmitting user data for the mobile terminal, using the same frequency or set of frequencies. This can result in a problematic interference situation. According to several embodiments of the present invention, at least one of two general approaches is used to mitigate the interference situation described above. In a first approach, the pico node's transmission power is reduced in some time intervals, thereby reducing the interference to a level where reception from the macro node is possible. In a second approach, which may be combined with the first approach in some cases, the data transmitted from the macro node is provided by the pico node, either alone or in combination with the macro node.
摘要翻译：在异构小区部署中，移动终端可能需要在微微节点正在使用相同的频率或频率集合为移动终端发送用户数据的同时从宏节点接收控制数据传输。这可能导致有问题的干扰情况。根据本发明的几个实施例，使用两种一般方法中的至少一种来减轻上述干扰情况。在第一种方法中，微微节点的传输功率在一些时间间隔内减小，从而将干扰降低到可能从宏节点接收的水平。在一些可能与第一种方法组合的第二种方法中，从宏节点发送的数据由微微节点单独提供，或与宏节点组合。

9. 发明申请

US20140106737A1 Green Relay Scheduler 审中-公开
标题翻译：绿色中继计划程序
公开(公告)号：US20140106737A1
公开(公告)日：2014-04-17
申请号：US14009455
申请日：2012-03-14
申请人： Leif Wilhelmsson , Niklas Johansson , Bengt Lindoff
发明人： Leif Wilhelmsson , Niklas Johansson , Bengt Lindoff
IPC分类号： H04W40/22 , H04B7/155
CPC分类号： H04W40/22 , H04B7/155 , H04B7/15557
摘要： The embodiments herein relate to a method in a relay node (110) for relaying data from a first network node (107) to a second network node (101) in a radio communication network (100). The relay node (110)receives the data from the first network node (107) and decodes the received data. The relay node (110) determines a delay constraint of the decoded data and recodes the decoded data. The relay node (110) relays the recoded data to the second network node (101) based on the determined delay constraint and according to a radio communication protocol. The communication between the relay node (110), the first network node (107) and the second network node (101) is based on the same radio communication protocol.
摘要翻译：这里的实施例涉及中继节点（110）中用于在无线电通信网络（100）中将数据从第一网络节点（107）中继到第二网络节点（101）的方法。中继节点（110）从第一网络节点（107）接收数据，并对接收到的数据进行解码。中继节点（110）确定解码数据的延迟约束并重新编码解码的数据。中继节点（110）基于确定的延迟约束并根据无线电通信协议将重新编码的数据中继到第二网络节点（101）。中继节点（110），第一网络节点（107）和第二网络节点（101）之间的通信基于相同的无线电通信协议。

10. 发明申请

US20140105149A1 Method and a First Radio Communication Node for Scheduling a Data Transmission 审中-公开
标题翻译：方法和用于调度数据传输的第一无线电通信节点
公开(公告)号：US20140105149A1
公开(公告)日：2014-04-17
申请号：US14116955
申请日：2012-05-14
申请人： Bengt Lindoff , Christian Bergljung , Leif Wilhelmsson
发明人： Bengt Lindoff , Christian Bergljung , Leif Wilhelmsson
IPC分类号： H04L1/00 , H04W72/12
CPC分类号： H04L1/0003 , H04J11/003 , H04L1/0009 , H04L1/0034 , H04L1/1867 , H04W24/10 , H04W72/12 , H04W72/1215 , H04W72/1226
摘要： A method in a first radio communication node (110, 310, 710, 1010) and a first radio communication node (110, 310, 710, 1010) for scheduling a data transmission in a first time frame using one of a plurality of modulation and coding schemes are provided. The data transmission is to be transmitted between the first radio communication node (110, 310, 710, 1010) and a second radio communication node (120, 320, 720, 1020). The first radio communication node (110, 310, 710, 1010) obtains (301, 701, 1001, 1401) a first indication about channel quality for the first time frame. The first radio communication node (110, 310, 710, 1010) obtains (302, 702, 1002, 1402) second indication about a possible upcoming transmission failure. The possible upcoming transmission failure relates to a feedback information to be transmitted in a second time frame. The feedback information is associated with the data transmission in the first time frame. The first radio communication node (110, 310, 710, 1010) selects (303, 703, 1003, 1403) a modulation and coding scheme out of said plurality of modulation and coding schemes based on the first indication and the second indication. Next, the first radio communication node (110, 310, 710, 1010) schedules (304, 704, 1004, 1404) the data transmission using the selected modulation and coding scheme.
摘要翻译：一种在第一无线电通信节点（110,310,710,1010）和第一无线电通信节点（110,310,710,1010）中的方法，用于使用多个调制中的一个来调度第一时间帧中的数据传输，以及提供编码方案。数据传输将在第一无线电通信节点（110,310,710,1010）和第二无线电通信节点（120,320,720,1020）之间传输。第一无线电通信节点（110,310,710,1010）获得关于第一时间帧的信道质量的第一指示（301,701,1001,1401）。第一无线电通信节点（110,310,710,1010）获得关于可能的即将到来的传输故障的第二指示（302,702,1002,1402）。可能的即将到来的传输故障涉及要在第二时间帧中发送的反馈信息。反馈信息与第一时间帧中的数据传输相关联。基于第一指示和第二指示，第一无线电通信节点（110,310,710,1010）从所述多个调制和编码方案中选择（303,703,1003,1403）调制和编码方案。接下来，第一无线电通信节点（110,310,710,1010）使用所选择的调制和编码方案来调度（304,704,1004,1404）数据传输。

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