公开(公告)号：US09419836B2

公开(公告)日：2016-08-16

申请号：US12386743

申请日：2009-04-21

申请人： Mieszko Chmiel ,  Przemyslaw Jan Czerepinski ,  Kaj Jansen

发明人： Mieszko Chmiel ,  Przemyslaw Jan Czerepinski ,  Kaj Jansen

IPC分类号： H04L5/00 ,  H04L27/26 ,  H04J11/00

CPC分类号： H04L5/0048 ,  H04J11/0093 ,  H04J2203/0089 ,  H04L27/2607 ,  H04W72/042 ,  H04W84/045

摘要： In one exemplary embodiment, a method includes: inserting an indication of a cyclic prefix length into a transmission; and sending the transmission. In another exemplary embodiment, a method includes: receiving a transmission; and processing the received transmission to obtain an indication of a cyclic prefix length.

公开(公告)号：US08170555B1

公开(公告)日：2012-05-01

申请号：US10030798

申请日：2000-07-12

申请人： Oscar Salonaho ,  Kaisu Ilsakkila ,  Sari K. Korpela ,  Kaj Jansen

发明人： Oscar Salonaho ,  Kaisu Ilsakkila ,  Sari K. Korpela ,  Kaj Jansen

IPC分类号： H04W36/00

CPC分类号： H04W36/30

摘要： A method for selecting a new cell for a station in a cellular telecommunications system, the station being associated with a current cell is provided. The method comprises the steps of measuring at the station the strength of a communication from the current cell, measuring at the station the strength of a communication from at least one other cell, modifying the result of the measuring step in which the strength of the communication from at least one other cell and/or the current cell is measured to take into account a condition of the current and/or said at least one other cell if the measured strength of the communication from the current cell and/or the measured strength of the communication from the at least one other cell satisfy a predetermined condition, if the modifying step is performed, comparing the measured strength of the communication from the current cell and the measured strength of the communication from the at least one other cell at least one of the measured strengths being modified in the modifying step and depending on the results of the comparison changing the current cell with which the station is associated.

摘要翻译： 提供了一种用于在蜂窝电信系统中选择用于站的新小区的方法，所述站与当前小区相关联。 该方法包括以下步骤：在站处测量来自当前小区的通信的强度，在站处测量来自至少一个其他小区的通信的强度，修改测量步骤的结果，其中通信强度 测量来自至少一个其它单元和/或当前单元的电流以考虑当前和/或所述至少一个其它单元的状况，如果来自当前单元的测量的通信强度和/或测量的强度 来自至少一个其他小区的通信满足预定条件，如果执行修改步骤，将来自当前小区的测量的通信强度与来自至少一个其他小区的通信强度进行比较， 所测量的强度在修改步骤中被修改，并且取决于比较结果来改变与该站相关联的当前小区。

公开(公告)号：US08045927B2

公开(公告)日：2011-10-25

申请号：US11412472

申请日：2006-04-27

申请人： Kaj Jansen

发明人： Kaj Jansen

IPC分类号： H04B17/00

CPC分类号： H04L27/2675 ,  H04B17/327 ,  H04L27/2647 ,  H04L27/2663 ,  H04L27/2672

摘要： A signal detection scheme is provided. According to the provided signal detection scheme, a received signal is correlated in a frequency domain with a reference signal. Additionally, the reception power of the received signal is calculated and the correlation value is normalized with the reception power. Therefore, a single threshold value may be used regardless of the reception power of the received signal when comparing the correlation between the received signal and the reference signal with the threshold value in order to determine whether the received signal is a desired signal or noise.

摘要翻译： 提供信号检测方案。 根据提供的信号检测方案，接收信号在频域与参考信号相关。 另外，接收信号的接收功率被计算，并且相关值用接收功率归一化。 因此，当将接收信号和参考信号之间的相关性与阈值进行比较时，无论接收信号的接收功率如何，都可以使用单个阈值，以便确定接收的信号是否是期望的信号或噪声。

公开(公告)号：US07864884B2

公开(公告)日：2011-01-04

申请号：US11412256

申请日：2006-04-27

申请人： Kaj Jansen

发明人： Kaj Jansen

IPC分类号： H03K9/00

CPC分类号： H04L27/2655 ,  H04L27/261 ,  H04L27/2675

摘要： A solution for signal detection in a radio receiver receiving multicarrier signals is disclosed. According to the provided solution, the radio receiver receives a radio signal and converts the received radio signal into digital samples. Since a desired signal being detected occupies only a portion of subcarriers of a signal the radio receiver is configured to receive, the received signal is heavily oversampled. A detection procedure may be simplified by utilizing this oversampling. A relation between the known total bandwidth of the desired signal and the total bandwidth of the received radio signal may be calculated, and utilized in the actual signal detection. The signal detection is based on sliding correlation in which the samples of the received signal are correlated with a reference signal with different phase shifts between the two signals. As the result of the correlation, the received signal is determined to be either the desired signal or noise.

摘要翻译： 公开了一种在接收多载波信号的无线电接收机中进行信号检测的方案。 根据所提供的解决方案，无线电接收机接收无线电信号并将接收的无线电信号转换为数字样本。 由于检测到的期望信号仅占用无线电接收机的一部分子载波被配置为接收，所以接收到的信号被过度采样。 可以通过利用该过采样来简化检测过程。 可以计算所需信号的已知总带宽与接收的无线电信号的总带宽之间的关系，并用于实际的信号检测。 信号检测基于滑动相关，其中接收信号的样本与两个信号之间具有不同相移的参考信号相关。 作为相关的结果，接收信号被确定为期望的信号或噪声。

公开(公告)号：US20090270122A1

公开(公告)日：2009-10-29

申请号：US12386743

申请日：2009-04-21

申请人： Mieszko Chmiel ,  Przemyslaw Jan Czerepinski ,  Kaj Jansen

发明人： Mieszko Chmiel ,  Przemyslaw Jan Czerepinski ,  Kaj Jansen

IPC分类号： H04L27/00 ,  H04J11/00 ,  H04M1/00

CPC分类号： H04L5/0048 ,  H04J11/0093 ,  H04J2203/0089 ,  H04L27/2607 ,  H04W72/042 ,  H04W84/045

摘要： In one exemplary embodiment, a method includes: inserting an indication of a cyclic prefix length into a transmission; and sending the transmission. In another exemplary embodiment, a method includes: receiving a transmission; and processing the received transmission to obtain an indication of a cyclic prefix length.

摘要翻译： 在一个示例性实施例中，一种方法包括：将循环前缀长度的指示插入到传输中; 并发送传输。 在另一示例性实施例中，一种方法包括：接收传输; 并处理所接收的传输以获得循环前缀长度的指示。

公开(公告)号：US20090219893A1

公开(公告)日：2009-09-03

申请号：US12421382

申请日：2009-04-09

申请人： Sari Korpela ,  Jussi Numminen ,  Kjell Ostman ,  Kaj Jansen ,  Kari Rikkinen ,  Uwe Schwarz ,  Peter Muszynski

发明人： Sari Korpela ,  Jussi Numminen ,  Kjell Ostman ,  Kaj Jansen ,  Kari Rikkinen ,  Uwe Schwarz ,  Peter Muszynski

IPC分类号： H04B17/00 ,  H04W4/00

CPC分类号： H04B17/318 ,  H04W36/00837 ,  H04W36/0085 ,  H04W36/18 ,  H04W52/40

摘要： A method and system for soft handover area detection for uplink interference avoidance that includes a network device and mobile device in a communications network. A trigger criteria threshold is determined for the mobile device. The mobile device is using a downlink carrier. If a trigger criteria has risen above or fallen below the trigger criteria threshold, inter-frequency measurements of co-sited cells are performed and compared to determine if a soft handover area exists. Co-sited cells are searched for downlink carriers and reselection is initiated from the downlink carrier to a co-sited cell downlink carrier if the co-sited cell downlink carrier is useable by the mobile device. Reselection is initiated from the downlink carrier to a non co-sited cell downlink carrier if no co-sited cell downlink carrier useable by the mobile device is found. The system provides for reselection while uplink carrier interference is avoided.

摘要翻译： 一种用于上行链路干扰避免的软切换区域检测的方法和系统，其包括通信网络中的网络设备和移动设备。 为移动设备确定触发条件阈值。 移动设备正在使用下行链路载波。 如果触发条件已经升高到或低于触发标准阈值，则执行并联单元的频率间测量并进行比较以确定是否存在软切换区域。 对于下行链路载波，搜索共同的小区，并且如果所述共同的小区下行链路载波可被移动设备使用，则从所述下行链路载波开始重新选择到共同的小区下行链路载波。 如果没有找到由移动设备可用的共同的小区下行链路载波，则从下行链路载波发起到非共同的小区下行链路载波的重选。 系统提供重选，同时避免上行链路载波干扰。

公开(公告)号：US20080130626A1

公开(公告)日：2008-06-05

申请号：US11984618

申请日：2007-11-20

申请人： Mika Ventola ,  Kari Majonen ,  Kaj Jansen

发明人： Mika Ventola ,  Kari Majonen ,  Kaj Jansen

IPC分类号： H04J3/06

CPC分类号： H04L25/022 ,  H04L25/0232 ,  H04L25/0236 ,  H04L27/2655 ,  H04L27/2675

摘要： A method and an apparatus for channel estimation are provided. The apparatus comprises: a synchronization unit configured to time-synchronize with a received signal on the basis of one or more synchronization patterns of the received signal; a searcher configured to search for pilot sequences of the received signal; an estimator configured to perform channel estimation on the basis of the pilot sequences and one or more synchronization patterns, and a decoder configured to decode cell information from the received signal.

摘要翻译： 提供了一种用于信道估计的方法和装置。 该装置包括：同步单元，被配置为基于接收信号的一个或多个同步模式与接收信号进行时间同步; 搜索器，被配置为搜索接收信号的导频序列; 估计器，被配置为基于导频序列和一个或多个同步模式执行信道估计，以及解码器，被配置为从接收信号中解码小区信息。

公开(公告)号：US07379748B2

公开(公告)日：2008-05-27

申请号：US10512178

申请日：2002-04-26

申请人： Kaj Jansen

发明人： Kaj Jansen

IPC分类号： H04Q7/20 ,  H04B7/00

CPC分类号： H04W48/16 ,  H04W56/0035

摘要： A method for initial synchronization in a mobile telecommunications network to connect a mobile terminal (10) to a base station (12). The mobile terminal has a search frequency list comprising a limited number of search frequencies. The method comprises the step of searching for an available frequency in the order of the search frequency list. The search frequency list further comprises count values, indicating how frequently the corresponding frequency has been used, wherein the order of at least some of the search frequencies depends on the count values.

摘要翻译： 一种用于将移动终端（10）连接到基站（12）的移动电信网络中的初始同步的方法。 移动终端具有包括有限数量的搜索频率的搜索频率列表。 该方法包括以搜索频率列表的顺序搜索可用频率的步骤。 搜索频率列表还包括计数值，指示相应频率已被使用的频率，其中至少一些搜索频率的顺序取决于计数值。

公开(公告)号：US08908611B2

公开(公告)日：2014-12-09

申请号：US12072638

申请日：2008-02-26

申请人： Kaj Jansen ,  Markku J. Heikkilä ,  Ulo Parts ,  Juha Heiskala ,  Zoltan Safar

发明人： Kaj Jansen ,  Markku J. Heikkilä ,  Ulo Parts ,  Juha Heiskala ,  Zoltan Safar

IPC分类号： H04B7/26 ,  H04B7/02

CPC分类号： H04B7/022

摘要： A semi-single frequency network (SFN) concept is presented. According to the SFN concept, the same data signal is transmitted from multiple base stations to a mobile terminal simultaneously on the same frequency band. Accordingly, the transmitted signals are combined in the radio channel and the mobile terminal experiences the transmitted signals as one signal propagated through a multipath channel. Additionally, each base station transmits a base station specific pilot signal. The mobile terminal carries out a channel estimation procedure for each received pilot signal and combines the channel estimates to obtain information how to equalize the received data signal. Then, the mobile terminal calculates equalization weights from the combined channel estimates and equalizes the received data signal.

摘要翻译： 提出了一种半单频网络（SFN）概念。 根据SFN概念，相同的数据信号在同一频带上同时从多个基站发送到移动终端。 因此，所发送的信号在无线电信道中组合，并且移动终端经历作为通过多径信道传播的一个信号的发送信号。 另外，每个基站发送基站专用导频信号。 移动终端对每个接收到的导频信号执行信道估计过程，并组合信道估计以获得如何均衡接收的数据信号的信息。 然后，移动终端从组合信道估计中计算均衡权重，并对接收到的数据信号进行均衡。

公开(公告)号：US07894417B2

公开(公告)日：2011-02-22

申请号：US11585104

申请日：2006-10-24

申请人： Ülo Parts ,  Kaj Jansen

发明人： Ülo Parts ,  Kaj Jansen

IPC分类号： H04J3/06 ,  H04J3/00 ,  H04B7/212

CPC分类号： H04L27/2656 ,  H04J11/0086 ,  H04L5/0007 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0064 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675

摘要： A pilot structure, a method, and a receiver for multi-carrier cellular communications communication system include a network element and a user equipment. The network element is configured to transmit a pilot sequence. The user equipment is configured to detect a pilot sequence comprising a primary synchronization sequence at predetermined number of sub-frames at a center of a bandwidth, a primary common pilot for each sub-frame, and short system information once per frame at the center of the bandwidth, and to decode the short system information to identify system frame timing and a system bandwidth of a cell.

摘要翻译： 用于多载波蜂窝通信通信系统的导频结构，方法和接收机包括网元和用户设备。 网元被配置为发送导频序列。 用户设备被配置为检测导频序列，其包括在带宽中心处的预定数量的子帧的主要同步序列，每个子帧的主要公共导频，以及在每个子帧的中心处的每帧一次的短系统信息 并且解码短系统信息以识别系统帧定时和小区的系统带宽。