公开(公告)号：US08706068B2

公开(公告)日：2014-04-22

申请号：US12421104

申请日：2009-04-09

申请人： Jose Flordelis ,  Joakim Axmon ,  Bengt Lindoff

发明人： Jose Flordelis ,  Joakim Axmon ,  Bengt Lindoff

IPC分类号： H04B17/00

CPC分类号： H04L25/0224 ,  H04B17/318 ,  H04B17/327 ,  H04B17/336 ,  H04B17/382 ,  H04J11/0069 ,  H04L5/0007 ,  H04L25/0204 ,  H04W24/10

摘要： Methods and apparatus in a mobile receiver for selecting among methods of estimating a received power of at least one signal. A method includes selecting a first method or a second method of measuring the received power based on a cell timing and a measurement interval. Information is received from a first base station about the measurement interval during which to perform the first method and the second method on a signal transmitted by at least one second base station. The timing of the at least one second base station is determined, and based on the timing of the at least one second base station and the measurement interval, one of the first method and the second method is selected.

摘要翻译： 用于在估计至少一个信号的接收功率的方法中进行选择的移动接收机中的方法和装置。 一种方法包括基于小区定时和测量间隔选择测量接收功率的第一方法或第二方法。 从第一基站接收关于由至少一个第二基站发送的信号执行第一方法和第二方法的测量间隔的信息。 确定至少一个第二基站的定时，并且基于至少一个第二基站的定时和测量间隔，选择第一方法和第二方法之一。

公开(公告)号：US20120087264A1

公开(公告)日：2012-04-12

申请号：US13260724

申请日：2010-03-25

申请人： Bengt Lindoff ,  Joakim Axmon ,  Jose Flordelis

发明人： Bengt Lindoff ,  Joakim Axmon ,  Jose Flordelis

IPC分类号： H04W24/00

CPC分类号： H04L5/0048 ,  H04W24/10 ,  H04W52/0229 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/23 ,  Y02D70/24

摘要： In a method and a mobile communications receiver for performing signal measurements, signal measurement data is received from at least one base station during at least part of a measurement period. Each measurement period comprises a number of non-equidistant snapshot measurement windows during which the receiver receives signal measurement data. At least one average signal strength value of the signal measurement data received during the measurement period is computed.

摘要翻译： 在用于执行信号测量的方法和移动通信接收机中，在测量周期的至少部分期间，从至少一个基站接收信号测量数据。 每个测量周期包括多个不等距的快照测量窗口，在此期间接收器接收信号测量数据。 计算在测量周期期间接收到的信号测量数据的至少一个平均信号强度值。

公开(公告)号：US08687599B2

公开(公告)日：2014-04-01

申请号：US13260724

申请日：2010-03-25

申请人： Bengt Lindoff ,  Joakim Axmon ,  Jose Flordelis

发明人： Bengt Lindoff ,  Joakim Axmon ,  Jose Flordelis

IPC分类号： H04W4/00

CPC分类号： H04L5/0048 ,  H04W24/10 ,  H04W52/0229 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/23 ,  Y02D70/24

摘要： In a method and a mobile communications receiver for performing signal measurements, signal measurement data is received from at least one base station during at least part of a measurement period. Each measurement period comprises a number of non-equidistant snapshot measurement windows during which the receiver receives signal measurement data. At least one average signal strength value of the signal measurement data received during the measurement period is computed.

摘要翻译： 在用于执行信号测量的方法和移动通信接收机中，在测量周期的至少部分期间，从至少一个基站接收信号测量数据。 每个测量周期包括多个不等距的快照测量窗口，在此期间接收器接收信号测量数据。 计算在测量周期期间接收到的信号测量数据的至少一个平均信号强度值。

公开(公告)号：US20090318090A1

公开(公告)日：2009-12-24

申请号：US12421104

申请日：2009-04-09

申请人： Jose Flordelis ,  Joakim Axmon ,  Bengt Lindoff

发明人： Jose Flordelis ,  Joakim Axmon ,  Bengt Lindoff

IPC分类号： H04B17/00

CPC分类号： H04L25/0224 ,  H04B17/318 ,  H04B17/327 ,  H04B17/336 ,  H04B17/382 ,  H04J11/0069 ,  H04L5/0007 ,  H04L25/0204 ,  H04W24/10

摘要： Methods and apparatus in a mobile receiver for selecting among methods of estimating a received power of at least one signal. A method includes selecting a first method or a second method of measuring the received power based on a cell timing and a measurement interval. Information is received from a first base station about the measurement interval during which to perform the first method and the second method on a signal transmitted by at least one second base station. The timing of the at least one second base station is determined, and based on the timing of the at least one second base station and the measurement interval, one of the first method and the second method is selected.

摘要翻译： 用于在估计至少一个信号的接收功率的方法中进行选择的移动接收机中的方法和装置。 一种方法包括基于小区定时和测量间隔选择测量接收功率的第一方法或第二方法。 从第一基站接收关于由至少一个第二基站发送的信号执行第一方法和第二方法的测量间隔的信息。 确定至少一个第二基站的定时，并且基于至少一个第二基站的定时和测量间隔，选择第一方法和第二方法之一。

公开(公告)号：US20130077508A1

公开(公告)日：2013-03-28

申请号：US13522807

申请日：2012-05-22

申请人： Joakim Axmon ,  Muhammad Kazmi ,  Bengt Lindoff

发明人： Joakim Axmon ,  Muhammad Kazmi ,  Bengt Lindoff

IPC分类号： H04W24/00

CPC分类号： H04W24/10 ,  H04L27/26 ,  H04W16/14 ,  H04W24/00 ,  H04W36/0094 ,  H04W48/16 ,  H04W72/042 ,  H04W72/0453

摘要： One aspect of the present invention is method for signal quality measurement that provides significant improvements in accuracy, at least in certain scenarios where conventional approaches to such measurements are vulnerable to inaccuracies. Non-limiting example scenarios include instances where a communication network uses downlink carriers in neighboring cells with overlapping frequencies but with different bandwidths and/or center frequencies. In such cases, there may be uneven interference across the carrier bandwidth, e.g., arising from neighboring carriers operating at different center frequencies and/or at different bandwidths. Thus, making the signal quality measurement for a given carrier depend on a combination of measurements taken at different frequency regions of the carrier provides a clearer, more accurate picture of the interference or loading conditions bearing on that carrier.

公开(公告)号：US08848638B2

公开(公告)日：2014-09-30

申请号：US13398786

申请日：2012-02-16

申请人： Joakim Axmon ,  Erik Eriksson ,  Bengt Lindoff ,  Anders Wallén ,  Leif Wilhelmsson

发明人： Joakim Axmon ,  Erik Eriksson ,  Bengt Lindoff ,  Anders Wallén ,  Leif Wilhelmsson

IPC分类号： H04Q7/00 ,  H04L5/00 ,  H04W48/16 ,  H04W48/12

CPC分类号： H04W72/0493 ,  H04L5/00 ,  H04L5/0053 ,  H04W48/12 ,  H04W48/16

摘要： A network node that serves a host cell in a cellular communication system transmits, at (a) first time interval(s), first control channel information on a control channel that extends over a first bandwidth of a radiofrequency spectrum. The first control channel communicates information necessary to enable a first type of communication device to receive data from the host cell. The first type of communication device can receive first bandwidth-wide signals. At (a) second time interval(s), second control channel information is transmitted on a second control channel of a first M-cell. The second control channel occupies a second bandwidth that is smaller than the first bandwidth. The second time interval(s) do(es) not coincide with any of the first time interval(s). A second type of communication device having reduced receive bandwidth capabilities compared to those of the first type of communication device is thereby made capable of being served by the node.

摘要翻译： 服务蜂窝通信系统中的主机小区的网络节点在（a）第一时间间隔处，在通过射频频谱的第一带宽延伸的控制信道上发送第一控制信道信息。 第一控制信道传送使得第一类型的通信设备能够从主机小区接收数据所需的信息。 第一类通信设备可以接收第一带宽信号。 在（a）第二时间间隔，在第一M单元的第二控制信道上发送第二控制信道信息。 第二控制信道占用小于第一带宽的第二带宽。 第二时间间隔（s）与第一时间间隔（s）中的任一个不一致。 与第一类型的通信设备相比，具有降低的接收带宽能力的第二类型的通信设备由此能够被节点服务。

公开(公告)号：US20100226264A1

公开(公告)日：2010-09-09

申请号：US12399809

申请日：2009-03-06

申请人： Joakim Axmon ,  Bengt Lindoff

发明人： Joakim Axmon ,  Bengt Lindoff

IPC分类号： H04W16/24 ,  H04J1/16

CPC分类号： H04W48/16 ,  H04J11/0079 ,  H04J11/0086

摘要： A wireless communication receiver performs robust cell searching, excluding interference due to UL transmissions from other UE, by qualifying the output of a matched filter with a metric indicative of the momentary signal-to-noise ratio (SNR). The momentary SNR metric is derived over the same amount of samples as the length of the matched filter. By discarding filter outputs during low momentary SNR, synchronization interference from UL transmissions is avoided. The momentary SNR metric and filter outputs are efficiently calculated, with only a few states and operations, compared to a conventional tapped delay line filter implementation. A limited list of cell candidates is populated, with information on correlation, timing, cell identity within cell group, and SNR metric for the K strongest candidates with respect to the matched filter correlation values. This list is used for later cell search stages, where a secondary synchronization channel is decoded.

摘要翻译： 无线通信接收机通过用指示瞬时信噪比（SNR）的度量来限定匹配滤波器的输出，执行鲁棒小区搜索，排除由于来自其他UE的UL传输引起的干扰。 在与匹配滤波器的长度相同的采样量上导出瞬时SNR度量。 通过在低瞬时SNR期间丢弃滤波器输出，避免了来自UL传输的同步干扰。 与传统的抽头延迟线滤波器实现相比，具有仅几种状态和操作的瞬时SNR度量和滤波器输出被有效地计算。 填充有限的单元候选列表，其中关于匹配滤波器相关值的K个最强候选者的关联，定时，小区组内的小区标识以及SNR度量的信息。 该列表用于稍后的小区搜索阶段，其中辅助同步信道被解码。

公开(公告)号：US20120327895A1

公开(公告)日：2012-12-27

申请号：US13398787

申请日：2012-02-16

申请人： Anders Wallén ,  Bengt Lindoff ,  Erik Eriksson ,  Joakim Axmon ,  Leif Wilhelmsson

发明人： Anders Wallén ,  Bengt Lindoff ,  Erik Eriksson ,  Joakim Axmon ,  Leif Wilhelmsson

IPC分类号： H04W72/04

CPC分类号： H04W48/12 ,  H04L5/0053 ,  H04L5/0091 ,  H04L5/0094

摘要： A communication system node transmits first control channel information on a control channel that extends over a first bandwidth of a radiofrequency resource. The first control channel information is necessary to enable a first type of communication device, capable of receiving a signal having the first bandwidth, to establish a connection with a host cell. A MIB, occupying a second bandwidth-size part of the first bandwidth, is transmitted. The second bandwidth is smaller than the first bandwidth and is receivable by a second type of communication device having reduced receive bandwidth capabilities. The MIB has a first part comprising first part information necessary to enable the first type of communication device to establish the connection with the host cell, and a second part comprising second part information directly or indirectly enabling the second type of communication device to obtain parameters that enable connection establishment with the host cell.

摘要翻译： 通信系统节点在通过射频资源的第一带宽上延伸的控制信道上发送第一控制信道信息。 第一控制信道信息对于能够接收具有第一带宽的信号的第一类型的通信设备来建立与主机小区的连接是必需的。 占用第一带宽的第二带宽大小部分的MIB被发送。 第二带宽小于第一带宽，并且可以由具有降低的接收带宽能力的第二类型的通信设备接收。 MIB具有第一部分，其包括使得第一类型的通信设备能够建立与主机小区的连接所必需的第一部分信息，以及包括第二部分信息的第二部分直接或间接地使第二类型的通信设备获得参数， 启用与主机单元的连接建立。

公开(公告)号：US08885560B2

公开(公告)日：2014-11-11

申请号：US13398787

申请日：2012-02-16

申请人： Anders Wallen ,  Bengt Lindoff ,  Erik Eriksson ,  Joakim Axmon ,  Leif Wilhelmsson

发明人： Anders Wallen ,  Bengt Lindoff ,  Erik Eriksson ,  Joakim Axmon ,  Leif Wilhelmsson

IPC分类号： H04Q7/00 ,  H04W48/12 ,  H04L5/00

CPC分类号： H04W48/12 ,  H04L5/0053 ,  H04L5/0091 ,  H04L5/0094

摘要： A communication system node transmits first control channel information on a control channel that extends over a first bandwidth of a radiofrequency resource. The first control channel information is necessary to enable a first type of communication device, capable of receiving a signal having the first bandwidth, to establish a connection with a host cell. A MIB, occupying a second bandwidth-size part of the first bandwidth, is transmitted. The second bandwidth is smaller than the first bandwidth and is receivable by a second type of communication device having reduced receive bandwidth capabilities. The MIB has a first part comprising first part information necessary to enable the first type of communication device to establish the connection with the host cell, and a second part comprising second part information directly or indirectly enabling the second type of communication device to obtain parameters that enable connection establishment with the host cell.

摘要翻译： 通信系统节点在通过射频资源的第一带宽上延伸的控制信道上发送第一控制信道信息。 第一控制信道信息对于能够接收具有第一带宽的信号的第一类型的通信设备来建立与主机小区的连接是必要的。 占用第一带宽的第二带宽大小部分的MIB被发送。 第二带宽小于第一带宽，并且可以由具有降低的接收带宽能力的第二类型的通信设备接收。 MIB具有第一部分，其包括使得第一类型的通信设备能够建立与主机小区的连接所必需的第一部分信息，以及包括第二部分信息的第二部分直接或间接地使第二类型的通信设备获得参数， 启用与主机单元的连接建立。

公开(公告)号：US08675788B2

公开(公告)日：2014-03-18

申请号：US13203744

申请日：2010-02-22

申请人： Niklas Andgart ,  Peter Alriksson ,  Joakim Axmon ,  Bengt Lindoff ,  George Jöngren

发明人： Niklas Andgart ,  Peter Alriksson ,  Joakim Axmon ,  Bengt Lindoff ,  George Jöngren

IPC分类号： H04L27/06

CPC分类号： H04L27/2686 ,  H04L27/2657 ,  H04L2027/0065

摘要： A method of estimating frequency offset of a received signal in a terminal apparatus comprises a) determining a phase change between a first and a second reference symbol of the received signal, wherein the time distance t between the first and the second reference symbols is associated with an observation frequency f such that f=1/t. The method further comprises: b) determining a preliminary frequency offset Δf based on the determined phase change, wherein Δf forms a frequency offset hypothesis Δfh; and c) decoding at least a part of the received signal, with application of the frequency offset hypothesis Δfh, to a decoded signal. The method further comprises: d) determining whether the decoded signal is a successful decoding. If the decoded signal is a successful decoding, the frequency offset hypothesis Δfh is determined to be the estimated frequency offset, but if the decoded signal is not a successful decoding, the frequency offset hypothesis Δfh is adjusted by an integer n times the observation frequency f such that Δfh=Δf+n·f, where nε[+/−1, 2, 3, . . . ]. Steps c) and d) are then repeated.

摘要翻译： 一种在终端设备中估计接收信号的频率偏移的方法包括：a）确定接收信号的第一和第二参考符号之间的相位变化，其中第一和第二参考符号之间的时间距离t与 观测频率f使得f = 1 / t。 该方法还包括：b）基于确定的相位变化来确定初始频率偏移量Deltaf，其中Deltaf形成频率偏移假设Deltafh; 以及c）将应用所述频率偏移假设Deltafh的所述接收信号的至少一部分解码为解码信号。 该方法还包括：d）确定解码信号是否是成功解码。 如果解码信号是成功的解码，则将频率偏移假设Deltafh确定为估计的频率偏移，但是如果解码信号不是成功的解码，则频率偏移假设Deltafh被调整为观察频率f的整数n倍 使Deltafh = Deltaf + n·f，其中nepsilon [+/- 1,2,3次。 。 。 ]。 然后重复步骤c）和d）。