OFDM signal reception in the presence of interference
    1.
    发明授权
    OFDM signal reception in the presence of interference 有权
    在存在干扰的情况下进行OFDM信号接收

    公开(公告)号:US08477860B2

    公开(公告)日:2013-07-02

    申请号:US12869816

    申请日:2010-08-27

    IPC分类号: H04L27/01

    摘要: Decoding a received Orthogonal Frequency Division Multiplex (OFDM) signal that occupies a first set of subcarriers in a radio frequency spectrum includes ascertaining an interference model that represents interference occurring in the first set of subcarriers caused by a transmitted OFDM signal that occupies a second set of subcarriers in the radio frequency spectrum. A set of scaled soft values is produced that represents information conveyed by the received OFDM signal over the first set of subcarriers, wherein each scaled soft value in the set of scaled soft values corresponds to a respective one of the subcarriers in the first set of subcarriers, and wherein a scaling amount applied to each of the scaled soft values is based on a corresponding level of interference in said respective one of the subcarriers as indicated by the interference model. A decoding process is performed that generates detected data from the scaled soft values.

    摘要翻译: 解码在无线电频谱中占用第一组子载波的接收的正交频分多路复用(OFDM)信号包括确定干扰模型,其表示由发送的OFDM信号引起的第一组子载波中所发生的干扰,所述OFDM信号占用第二组 无线电频谱中的子载波。 产生一组缩放的软值,其表示在第一组子载波上由接收的OFDM信号传送的信息,其中该缩放的软值集合中的每个缩放的软值对应于第一组子载波中的相应的一个子载波 ,并且其中应用于每个所述缩放的软值的缩放量基于由所述干扰模型指示的所述相应一个子载波中的相应的干扰电平。 执行从缩放的软值生成检测数据的解码处理。

    Methods and apparatus for improved receiver performance in half-duplex wireless terminals
    2.
    发明授权
    Methods and apparatus for improved receiver performance in half-duplex wireless terminals 有权
    用于提高半双工无线终端接收机性能的方法和装置

    公开(公告)号:US07953028B2

    公开(公告)日:2011-05-31

    申请号:US12099945

    申请日:2008-04-09

    IPC分类号: H04B7/00

    CPC分类号: H04L5/16 H04B1/44

    摘要: A half-duplex mobile terminal having first and second receiver branches connected, during a receive mode, to respective antennas, is disclosed. One of the antennas is selectively connected to the first receiver branch or to a transmitter circuit. The first antenna is connected to the first receiver branch during a first interval, during which interval data is detected using outputs from both the first and second receiver branches. The first antenna is disconnected from the first receiver branch at the end of the first interval, and, during a second interval immediately following the first interval, data is detected using the output of the second receiver branch. A portion of the incoming transmission that arrives during the transition between the receive mode and transmit mode in a half-duplex transceiver is thus received and detected, improving performance of the half-duplex transceiver.

    摘要翻译: 公开了一种在接收模式期间将第一和第二接收机分支连接到相应天线的半双工移动终端。 其中一个天线选择性地连接到第一接收机分支或发射机电路。 第一天线在第一间隔期间连接到第一接收器分支,在该间隔期间,使用来自第一和第二接收器分支的输出检测间隔数据。 在第一间隔结束时,第一天线与第一接收器分支断开,并且在第一间隔之后的第二间隔期间,使用第二接收器分支的输出来检测数据。 因此,在半双工收发器中的接收模式和发送模式之间的转换期间到达的输入传输的一部分被接收和检测,从而提高了半双工收发器的性能。

    OFDM signal reception in the presence of interference
    3.
    发明申请
    OFDM signal reception in the presence of interference 有权
    在存在干扰的情况下进行OFDM信号接收

    公开(公告)号:US20120051464A1

    公开(公告)日:2012-03-01

    申请号:US12869816

    申请日:2010-08-27

    IPC分类号: H04L27/06 H04L25/08

    摘要: Decoding a received Orthogonal Frequency Division Multiplex (OFDM) signal that occupies a first set of subcarriers in a radio frequency spectrum includes ascertaining an interference model that represents interference occurring in the first set of subcarriers caused by a transmitted OFDM signal that occupies a second set of subcarriers in the radio frequency spectrum. A set of scaled soft values is produced that represents information conveyed by the received OFDM signal over the first set of subcarriers, wherein each scaled soft value in the set of scaled soft values corresponds to a respective one of the subcarriers in the first set of subcarriers, and wherein a scaling amount applied to each of the scaled soft values is based on a corresponding level of interference in said respective one of the subcarriers as indicated by the interference model. A decoding process is performed that generates detected data from the scaled soft values.

    摘要翻译: 解码在无线电频谱中占用第一组子载波的接收的正交频分多路复用(OFDM)信号包括确定干扰模型,其表示由发送的OFDM信号引起的第一组子载波中所发生的干扰,所述OFDM信号占用第二组 无线电频谱中的子载波。 产生一组缩放的软值,其表示在第一组子载波上由接收的OFDM信号传送的信息,其中该缩放的软值集合中的每个缩放的软值对应于第一组子载波中的相应的一个子载波 ,并且其中应用于每个所述缩放的软值的缩放量基于由所述干扰模型指示的所述相应一个子载波中的相应的干扰电平。 执行从缩放的软值生成检测数据的解码处理。

    Signal Processing Device and Method
    4.
    发明申请
    Signal Processing Device and Method 有权
    信号处理装置及方法

    公开(公告)号:US20110136455A1

    公开(公告)日:2011-06-09

    申请号:US13001758

    申请日:2009-06-15

    IPC分类号: H04B1/26

    CPC分类号: H04B1/28 H04B1/406

    摘要: A processing device (40) for processing an analog complex input signal generated by downconversion of an aggregated-spectrum radio-frequency signal in a radio-receiver (10), wherein the complex input signal comprises a plurality of sub bands (S1-S4) scattered across a total frequency band (4) of the complex input signal. The processing device (40) comprises a plurality of processing paths (P1-PN). wherein each processing path (P1-PN) is adapted to process an associated sub band (S1-S4). Each processing path comprises a complex mixer (CM1-CMN) adapted to frequency translate the complex input signal, and an analog channel-selection filter (CSF1-CSFN) arranged to filter an output signal of the complex mixer (CM1-CMN) and pass the frequency translated associated sub band (S1-S4). A control unit (60) is adapted to receive control data indicating frequency locations of the sub bands (S1-S4) and, for each processing path (P1-PN). control the local oscillator signal of the complex mixer (CM1-CMN) of the processing path (P1-PN) based on the frequency location of the associated sub band (S1-S4) and the passband of the channel-selection filter (CSF1-CSFN) of the processing path (P1-PN), such that the frequency-translated associated sub band (S1-S4) appears within a passband of the channel-selection filter (CSF1-CSFN) of the processing path (P1-PN). The distortion monitored in the unused paths may be used to improve the performance of the used paths.

    摘要翻译: 一种处理装置(40),用于处理通过在无线电接收机(10)中对聚合频谱射频信号进行下变频而产生的模拟复合输入信号,其中所述复合输入信号包括多个子带(S1-S4) 分散在复合输入信号的总频带(4)上。 处理装置(40)包括多个处理路径(P1-PN),其中每个处理路径(P1-PN)适于处理相关子带(S1-S4)。 每个处理路径包括适于对复数输入信号进行频率转换的复合混频器(CM1-CMN),和布置成对复合混频器(CM1-CMN)的输出信号进行滤波并通过的模拟通道选择滤波器(CSF1-CSFN) 频率相关子带(S1-S4)。 控制单元(60)适于接收指示子频带的频率位置的控制数据(S1-S4),并且对于每个处理路径(P1-PN),控制复合混频器(CM1-CMN)的本地振荡器信号, 基于相关子带(S1-S4)的频率位置和处理路径(P1-PN)的信道选择滤波器(CSF1-CSFN)的通带的处理路径(P1-PN),使得 经频率转换的相关子带(S1-S4)出现在处理路径(P1-PN)的信道选择滤波器(CSF1-CSFN)的通带内。 在未使用的路径中监视的失真可用于改善所使用路径的性能。

    Adaptive Scheduling for Half-Duplex Wireless Terminals
    5.
    发明申请
    Adaptive Scheduling for Half-Duplex Wireless Terminals 有权
    半双工无线终端的自适应调度

    公开(公告)号:US20090135748A1

    公开(公告)日:2009-05-28

    申请号:US12255054

    申请日:2008-10-21

    IPC分类号: H04L5/16

    摘要: Adaptation is introduced into allocation of uplink and downlink subframes in wireless communication systems that support full-duplex and half-duplex mobile terminals, thus reducing interference between mobile terminals. In an exemplary method for allocating uplink and downlink timeslots in a wireless communication system supporting full-duplex and half-duplex mobile terminals, a base station determines that a mobile terminal is capable of only half-duplex operation and allocates one or more uplink subframes and one or more downlink subframes to the first mobile terminal, for each of a plurality of frames, so that none of the allocated uplink subframes overlaps in time with an allocated downlink subframe. The allocation of uplink subframes and downlink subframes is varied between consecutive ones in at least a first series of frames according to a pre-determined pattern. In some embodiments, the method further includes transmitting an allocation message to the first mobile terminal, designating the pre-determined pattern.

    摘要翻译: 在支持全双工和半双工移动终端的无线通信系统中将适配引入到上行链路和下行链路子帧的分配中,从而减少移动终端之间的干扰。 在支持全双工和半双工移动终端的无线通信系统中分配上行链路和下行链路时隙的示例性方法中,基站确定移动终端仅能够进行半双工操作,并且分配一个或多个上行链路子帧, 一个或多个下行链路子帧到第一移动终端,用于多个帧中的每一个,使得所分配的上行链路子帧中的任何一个都不会与分配的下行链路子帧在时间上重叠。 上行链路子帧和下行链路子帧的分配根据预定模式在至少第一系列帧中在连续帧的分配之间变化。 在一些实施例中,该方法还包括向第一移动终端发送分配消息,指定预定模式。

    Adaptive scheduling for half-duplex wireless terminals
    6.
    发明授权
    Adaptive scheduling for half-duplex wireless terminals 有权
    半双工无线终端的自适应调度

    公开(公告)号:US08155032B2

    公开(公告)日:2012-04-10

    申请号:US12255054

    申请日:2008-10-21

    IPC分类号: H04L5/16

    摘要: Adaptation is introduced into allocation of uplink and downlink subframes in wireless communication systems that support full-duplex and half-duplex mobile terminals, thus reducing interference between mobile terminals. In an exemplary method for allocating uplink and downlink timeslots in a wireless communication system supporting full-duplex and half-duplex mobile terminals, a base station determines that a mobile terminal is capable of only half-duplex operation and allocates one or more uplink subframes and one or more downlink subframes to the first mobile terminal, for each of a plurality of frames, so that none of the allocated uplink subframes overlaps in time with an allocated downlink subframe. The allocation of uplink subframes and downlink subframes is varied between consecutive ones in at least a first series of frames according to a pre-determined pattern. In some embodiments, the method further includes transmitting an allocation message to the first mobile terminal, designating the pre-determined pattern.

    摘要翻译: 在支持全双工和半双工移动终端的无线通信系统中,将适配引入到上行链路和下行链路子帧的分配中,从而减少移动终端之间的干扰。 在支持全双工和半双工移动终端的无线通信系统中分配上行链路和下行链路时隙的示例性方法中,基站确定移动终端仅能够进行半双工操作,并且分配一个或多个上行链路子帧, 一个或多个下行链路子帧到第一移动终端,用于多个帧中的每一个,使得所分配的上行链路子帧中的任何一个都不会与分配的下行链路子帧在时间上重叠。 上行链路子帧和下行链路子帧的分配根据预定模式在至少第一系列帧中在连续帧的分配之间变化。 在一些实施例中,该方法还包括向第一移动终端发送分配消息,指定预定模式。

    Signal processing device and method
    7.
    发明授权
    Signal processing device and method 有权
    信号处理装置及方法

    公开(公告)号:US08509725B2

    公开(公告)日:2013-08-13

    申请号:US13001758

    申请日:2009-06-15

    IPC分类号: H04B1/26

    CPC分类号: H04B1/28 H04B1/406

    摘要: A processing device (40) for processing an analog complex input signal generated by downconversion of an aggregated-spectrum radio-frequency signal in a radio-receiver (10), wherein the complex input signal comprises a plurality of sub bands (S1-S4) scattered across a total frequency band (4) of the complex input signal. The processing device (40) comprises a plurality of processing paths (P1-PN). wherein each processing path (P1-PN) is adapted to process an associated sub band (S1-S4). Each processing path comprises a complex mixer (CM1-CMN) adapted to frequency translate the complex input signal, and an analog channel-selection filter (CSF1-CSFN) arranged to filter an output signal of the complex mixer (CM1-CMN) and pass the frequency translated associated sub band (S1-S4). A control unit (60) is adapted to receive control data indicating frequency locations of the sub bands (S1-S4) and, for each processing path (P1-PN). control the local oscillator signal of the complex mixer (CM1-CMN) of the processing path (P1-PN) based on the frequency location of the associated sub band (S1-S4) and the passband of the channel-selection filter (CSF1-CSFN) of the processing path (P1-PN), such that the frequency-translated associated sub band (S1-S4) appears within a passband of the channel-selection filter (CSF1-CSFN) of the processing path (P1-PN). The distortion monitored in the unused paths may be used to improve the performance of the used paths.

    摘要翻译: 一种处理装置(40),用于处理通过在无线电接收机(10)中对聚合频谱射频信号进行下变频而产生的模拟复合输入信号,其中所述复合输入信号包括多个子带(S1-S4) 分散在复合输入信号的总频带(4)上。 处理装置(40)包括多个处理路径(P1-PN),其中每个处理路径(P1-PN)适于处理相关子带(S1-S4)。 每个处理路径包括适于对复数输入信号进行频率转换的复合混频器(CM1-CMN),和布置成对复合混频器(CM1-CMN)的输出信号进行滤波并通过的模拟通道选择滤波器(CSF1-CSFN) 频率相关子带(S1-S4)。 控制单元(60)适于接收指示子频带的频率位置的控制数据(S1-S4),并且对于每个处理路径(P1-PN),控制复合混频器(CM1-CMN)的本地振荡器信号, 基于相关子带(S1-S4)的频率位置和处理路径(P1-PN)的信道选择滤波器(CSF1-CSFN)的通带的处理路径(P1-PN),使得 经频率转换的相关子带(S1-S4)出现在处理路径(P1-PN)的信道选择滤波器(CSF1-CSFN)的通带内。 在未使用的路径中监视的失真可用于改善所使用路径的性能。

    Methods and Apparatus for Improved Receiver Performance in Half-Duplex Wireless Terminals
    8.
    发明申请
    Methods and Apparatus for Improved Receiver Performance in Half-Duplex Wireless Terminals 有权
    在半双工无线终端中提高接收机性能的方法和装置

    公开(公告)号:US20090180402A1

    公开(公告)日:2009-07-16

    申请号:US12099945

    申请日:2008-04-09

    IPC分类号: H04B7/00

    CPC分类号: H04L5/16 H04B1/44

    摘要: A half-duplex mobile terminal having first and second receiver branches connected, during a receive mode, to respective antennas, is disclosed. One of the antennas is selectively connected to the first receiver branch or to a transmitter circuit. The first antenna is connected to the first receiver branch during a first interval, during which interval data is detected using outputs from both the first and second receiver branches. The first antenna is disconnected from the first receiver branch at the end of the first interval, and, during a second interval immediately following the first interval, data is detected using the output of the second receiver branch. A portion of the incoming transmission that arrives during the transition between the receive mode and transmit mode in a half-duplex transceiver is thus received and detected, improving performance of the half-duplex transceiver.

    摘要翻译: 公开了一种在接收模式期间将第一和第二接收机分支连接到相应天线的半双工移动终端。 其中一个天线选择性地连接到第一接收机分支或发射机电路。 第一天线在第一间隔期间连接到第一接收器分支,在该间隔期间,使用来自第一和第二接收器分支的输出检测间隔数据。 在第一间隔结束时,第一天线与第一接收器分支断开,并且在第一间隔之后的第二间隔期间,使用第二接收器分支的输出来检测数据。 因此,在半双工收发器中的接收模式和发送模式之间的转换期间到达的输入传输的一部分被接收和检测,从而提高了半双工收发器的性能。

    Handover event prioritization
    9.
    发明授权

    公开(公告)号:US09907005B2

    公开(公告)日:2018-02-27

    申请号:US14125402

    申请日:2011-06-15

    IPC分类号: H04W36/00 H04W36/24 H04W36/30

    摘要: To communicate wireless handover events, a communications device associated with a serving cell of a cellular network determines, based on at least one or more first measurement results indicative of cell quality parameters of a plurality of cells of the cellular network, a first handover event associated with a first one of the cells, initiates communication of a first handover message indicative of the determined first handover event to a network entity of the cellular network, and, based on at least one or more second measurement results, determines a plurality of further handover events associated with respective ones of the cells, resulting in a plurality of pending handover events waiting to be communicated to a network entity of the cellular network. The communications device also determines a priority order for at least a subset of the pending handover events. The subset includes handover events associated with different cells.

    Wireless device performance in heterogeneous networks
    10.
    发明授权
    Wireless device performance in heterogeneous networks 有权
    异构网络中的无线设备性能

    公开(公告)号:US09525527B2

    公开(公告)日:2016-12-20

    申请号:US14126627

    申请日:2012-06-15

    摘要: The present invention relates to a method in a wireless device for improving wireless device performance, and to corresponding methods in a radio network node and to the corresponding nodes. The method comprises identifying (910) an occasion comprising a time period during which at least one time-frequency resource element, in a subframe that is transmitted between the wireless device and the radio network node, does not comprise information intended for the wireless device, or is not a time-frequency resource element in which the wireless device is expected to transmit. The method further comprises performing (920) an auxiliary action during the identified occasion to improve the wireless device performance.

    摘要翻译: 本发明涉及一种用于改善无线设备性能的无线设备中的方法以及无线网络节点和对应节点中的相应方法。 该方法包括识别(910)包括其间在无线设备和无线电网络节点之间传输的子帧中的至少一个时间频率资源元素不包括用于该无线设备的信息的时间段的场合, 或者不是期望无线设备发送的时间 - 频率资源元素。 该方法还包括在所识别的场合期间执行(920)辅助动作以改善无线设备性能。