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31. 发明授权

US08644403B2 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：US08644403B2
公开(公告)日：2014-02-04
申请号：US13036523
申请日：2011-02-28
申请人： Bengt Lindoff , Fredrik Nordstrom , Leif Wilhelmsson
发明人： Bengt Lindoff , Fredrik Nordstrom , Leif Wilhelmsson
IPC分类号： H04K1/10
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, in which 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, in which 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：通过确定用于传输OFDM符号的通用定时来生成用于从移动通信系统中的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。

32. 发明申请

US20130310059A1 Soft Cell Inter-Layer Interference Handling 有权
标题翻译：软单元层间干扰处理
公开(公告)号：US20130310059A1
公开(公告)日：2013-11-21
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来传送移动终端的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提供，单独或与宏节点组合。

33. 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。

34. 发明申请

US20120208528A1 Method for Initial Scanning of Frequencies, Frequency Scanning Controller, and Apparatus 有权
标题翻译：频率初始扫描方法，频率扫描控制器和装置
公开(公告)号：US20120208528A1
公开(公告)日：2012-08-16
申请号：US13391304
申请日：2009-08-25
申请人： Leif Wilhelmsson , Bengt Lindoff
发明人： Leif Wilhelmsson , Bengt Lindoff
IPC分类号： H04W24/00
CPC分类号： H04W48/16 , H04W88/06
摘要： A method for initial scanning of frequencies at start-up of a multi-band cellular communication apparatus is disclosed. The method comprises determining whether there is any interfering signal from any other communication system transmitting at a frequency in vicinity of frequencies of frequency bands of which the multi-band cellular communication apparatus is supposed to establish contact with a base station in at least one of the frequencies within the frequency bands. If the determination gives a result of no interfering signal, a first scan procedure is applied comprising plain scanning of the frequencies of the frequency bands of which the multi-band cellular communication apparatus is supposed to establish contact with a base station in at least one of the frequencies within the frequency bands, or if the determination gives a result of an interfering signal, a second scan procedure is applied, taking into account the determined interfering signal. A frequency scanning apparatus for initial scanning, and a radio access circuitry for such initial scanning is also disclosed.
摘要翻译：公开了一种用于在多频带蜂窝通信设备启动时的频率的初始扫描的方法。该方法包括：确定是否存在任何其他通信系统的任何干扰信号，所述干扰信号是在多频带蜂窝通信设备应该与基站建立接触的频带的频率附近发射的，其中至少一个频段内的频率。如果确定给出没有干扰信号的结果，则应用第一扫描程序，其包括在多频带蜂窝通信设备应该与基站建立接触的频带的频率的平面扫描中的至少一个频带内的频率，或者如果确定给出干扰信号的结果，则考虑所确定的干扰信号，应用第二扫描过程。还公开了用于初始扫描的频率扫描装置和用于这种初始扫描的无线电接入电路。

35. 发明申请

US20110090995A1 SIMULTANEOUS CELL GROUP AND CYCLIC PREFIX DETECTION METHOD, APPARATUS AND SYSTEM 有权
标题翻译：同步电池组和循环前缀检测方法，装置和系统
公开(公告)号：US20110090995A1
公开(公告)日：2011-04-21
申请号：US12970306
申请日：2010-12-16
申请人： Leif Wilhelmsson , Bengt Lindoff
发明人： Leif Wilhelmsson , Bengt Lindoff
IPC分类号： H04L27/06
CPC分类号： H04J11/0076 , H04L5/0007 , H04L25/022 , H04L25/03159 , H04L27/2655 , H04L27/2656 , H04L27/2666
摘要： A method, and associated apparatus and system, for simultaneous cell group and cyclic prefix (CP) detection, having the steps of determining primary synchronization signal (P-SyS) timing τ using the P-SyS; based on τ, determine a secondary synchronization signal (S-SyS) timing; placing a single Fast Fourier Transform (FFT) window; FFT processing the signal to obtain the frequency domain S-SyS symbols; equalizing the frequency domain S-SyS signal; phase correcting the S-SyS signal; and detecting the cell group and CP length by the correlation giving maximum energy.
摘要翻译：一种用于同步小区组和循环前缀（CP）检测的方法和相关联的装置和系统，具有使用P-SyS确定主同步信号（P-SyS）定时τ的步骤; 基于τ，确定次同步信号（S-SyS）定时; 放置单个快速傅里叶变换（FFT）窗口; FFT处理信号以获得频域S-SyS符号; 均衡频域S-SyS信号; 相位校正S-SyS信号; 并通过产生最大能量的相关性来检测细胞组和CP长度。

36. 发明申请

US20100202416A1 Data Packet Communication Scheduling in a Communication System 有权
标题翻译：通信系统中的数据分组通信调度
公开(公告)号：US20100202416A1
公开(公告)日：2010-08-12
申请号：US12369840
申请日：2009-02-12
申请人： Leif Wilhelmsson , Bengt Lindoff , Arild Lovendahl
发明人： Leif Wilhelmsson , Bengt Lindoff , Arild Lovendahl
IPC分类号： H04J3/00 , H04L12/56
CPC分类号： H04W72/1215 , H04W16/14
摘要： A communication device has a plurality of concurrently operating transceiver systems, each operating in a respectively different one of a plurality of communication systems. Operation of the transceiver systems is coordinated by receiving a plurality of requests from different ones of the transceiver systems, each of the requests being a request to access a communication medium for the purpose of transmitting or receiving a data packet. Utilization of an available time period is scheduled by selecting which one or ones of the requests to grant based, at least in part, on how many remaining times out of a maximum number of times each of the transmission systems' data packet is permitted to be retransmitted compared to other requests, on whether the requests are requests to transmit a data packet, and on whether the requests are requests to receive a data packet.
摘要翻译：通信设备具有多个同时操作的收发器系统，每个收发器系统分别在多个通信系统中的不同的一个中工作。通过从不同收发器系统接收多个请求来协调收发器系统的操作，每个请求是为了发送或接收数据分组的目的而访问通信介质的请求。调度可用时间段的利用是通过选择至少部分地基于允许传输系统的数据分组被允许的最大次数中剩余多少次来批准的请求中的哪一个或多个与其他请求相比重传，关于请求是发送数据分组的请求，以及请求是否是请求接收数据分组。

37. 发明申请

US20090116568A1 Method and Apparatus for Interference Rejection Combining and Detection 有权
标题翻译：干扰抑制组合检测方法与装置
公开(公告)号：US20090116568A1
公开(公告)日：2009-05-07
申请号：US12138743
申请日：2008-06-13
申请人： Bengt Lindoff , Johan Nilsson , Fredrik Nordstrom , Leif Wilhelmsson
发明人： Bengt Lindoff , Johan Nilsson , Fredrik Nordstrom , Leif Wilhelmsson
IPC分类号： H04L27/28
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。

38. 发明申请

US20080316911A1 Simultaneous Cell Group and Cyclic Prefix Detection Method, Apparatus and System 审中-公开
标题翻译：同步信元组和循环前缀检测方法，装置和系统
公开(公告)号：US20080316911A1
公开(公告)日：2008-12-25
申请号：US11961603
申请日：2007-12-20
申请人： Leif Wilhelmsson , Bengt Lindoff
发明人： Leif Wilhelmsson , Bengt Lindoff
IPC分类号： H04J11/00
CPC分类号： H04J11/0076 , H04L5/0007 , H04L25/022 , H04L25/03159 , H04L27/2655 , H04L27/2656 , H04L27/2666
摘要： A method, and associated apparatus and system, for simultaneous cell group and cyclic prefix (CP) detection, having the steps of determining primary synchronization signal (P-SyS) timing τ using the P-SyS; based on τ, determine a secondary synchronization signal (S-SyS) timing; placing a single Fast Fourier Transform (FFT) window; FFT processing the signal to obtain the frequency domain S-SyS symbols; equalizing the frequency domain S-SyS signal; phase correcting the S-SyS signal; and detecting the cell group and CP length by the correlation giving maximum energy.
摘要翻译：一种用于同时小区组和循环前缀（CP）检测的方法和相关联的装置和系统，具有使用P-SyS确定主同步信号（P-SyS）定时τ的步骤; 基于τ，确定次同步信号（S-SyS）定时; 放置单个快速傅里叶变换（FFT）窗口; FFT处理信号以获得频域S-SyS符号; 均衡频域S-SyS信号; 相位校正S-SyS信号; 并通过产生最大能量的相关性来检测细胞组和CP长度。

39. 发明申请

US20080101511A1 Cell ID Detection in Cellular Communication Systems 有权
标题翻译：蜂窝通信系统中的小区ID检测
公开(公告)号：US20080101511A1
公开(公告)日：2008-05-01
申请号：US11762379
申请日：2007-06-13
申请人： Bengt Lindoff , Leif Wilhelmsson
发明人： Bengt Lindoff , Leif Wilhelmsson
IPC分类号： H04B7/10
CPC分类号： H04L27/2647 , H04J11/0069 , H04L27/2613
摘要： Ascertaining which one of a number of cells of a cellular communication system transmitted an OFDM signal involves obtaining reference symbols from the OFDM signal. Compensating phase shift values for phase aligning the plurality of reference symbols are estimated and used to generate phase corrected reference symbols. At least two scrambling code sequences are applied to the phase corrected reference symbols to obtain at least two de-scrambled phase corrected reference symbol sequences, wherein each of the scrambling codes is associated with a respectively different one of the cells of the cellular communication system. A power value of each of the de-scrambled phase corrected reference symbol sequences is ascertained. That one of the scrambling codes that is associated with a highest one of the power values is ascertained, thereby ascertaining which one of the number of cells of the cellular communication system transmitted the OFDM signal.
摘要翻译：确定发送OFDM信号的蜂窝通信系统的多个小区哪一个涉及从OFDM信号获取参考符号。用于相位对准多个参考符号的补偿相移值被估计并用于产生相位校正的参考符号。至少两个扰码序列被施加到相位校正的参考符号以获得至少两个去加扰相位校正的参考符号序列，其中每个扰码与蜂窝通信系统中的分别不同的一个蜂窝相关联。确定每个解扰相位校正参考符号序列的功率值。确定与功率值中最高功率值相关联的扰码之一，从而确定蜂窝通信系统的小区数目中的哪一个发送OFDM信号。

40. 发明申请

US20140369282A1 Method of Controlling Operation of a Communication Device, Transceiver Operating Accordingly, and Computer Program 有权
标题翻译：控制通信设备的操作方法，相应的收发器操作和计算机程序
公开(公告)号：US20140369282A1
公开(公告)日：2014-12-18
申请号：US14345280
申请日：2012-09-14
申请人： Bengt Lindoff , Anders Wallén , Leif Wilhelmsson
发明人： Bengt Lindoff , Anders Wallén , Leif Wilhelmsson
IPC分类号： H04W76/04
CPC分类号： H04W76/27 , H04W52/0235 , H04W60/06 , H04W68/00 , H04W68/02 , H04W76/28 , Y02D70/00 , Y02D70/1224 , Y02D70/1262 , Y02D70/21 , Y02D70/24
摘要： A method of controlling operation of a communication device arranged to operate in a cellular communication network employing a paging signal to allow discontinuous reception for communication devices is disclosed. The communication device is arranged for three main communication states: detached state where the communication device is not registered to the cellular communication network; idle state where the communication device is registered to the cellular communication network, and receives paging signals through discontinuous reception; and active state where the communication device is registered to the cellular communication network and performs communication with the cellular communication network essentially continuously. The method comprises: i) connecting to the cellular communication network such that a transition from the detached state to any of idle state or active state is made; ii) performing scheduled operations in the active state or idle state; iii) determining, when a transition from the active state to the idle state occurs, time instant for next operation in the active state; iv) disconnecting from the cellular communication network such that a transition to the detached state is made; and v) when the time for next operation in the active state is approaching, returning the procedure to step i). A transceiver and a computer program are also disclosed.
摘要翻译：公开了一种控制通信设备的操作的方法，该通信设备被布置为在采用寻呼信号的蜂窝通信网络中操作以允许通信设备的不连续接收。通信装置被布置为三个主要通信状态：通信设备未向蜂窝通信网络注册的分离状态; 通信装置注册到蜂窝通信网络的空闲状态，并通过不连续接收接收寻呼信号; 以及其中通信设备被注册到蜂窝通信网络并且基本上连续地执行与蜂窝通信网络的通信的活动状态。该方法包括：i）连接到蜂窝通信网络，使得从分离状态转换到空闲状态或活动状态中的任何一个; ii）执行处于活动状态或空闲状态的调度操作; iii）当从活动状态到空闲状态的转变发生时，确定在活动状态下的下一个操作的时刻; iv）断开与蜂窝通信网络的连接，从而进行到分离状态的转换; 以及v）当处于活动状态的下一个操作的时间接近时，将该过程返回到步骤i）。还公开了收发器和计算机程序。

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