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公开(公告)号：US20110096680A1
公开(公告)日：2011-04-28
申请号：US12723255
申请日：2010-03-12
CPC分类号： H04L25/022 , H04B17/26 , H04B17/309 , H04B17/364 , H04B17/373 , H04L25/0222 , H04L25/0232
摘要： In one aspect, a method and apparatus derive channel quality estimates for given subcarriers in an OFDM signal, based on reference signal (RS) or other known-signal measurements made for another set of subcarriers. In at least one embodiment, a wireless communication apparatus implements a method whereby it is configured for receiving reference information on the first set of subcarriers; generating the first channel quality estimates in the frequency domain, based on the received reference information; computing a power delay profile for the first set of subcarriers; and determining the second channel quality estimates either by extrapolating from the first channel quality estimates or as an average of the first channel quality estimates, depending on a delay spread of the power delay profile.
摘要翻译： 一方面，一种方法和装置基于参考信号（RS）或对另一组子载波进行的其他已知信号测量，在OFDM信号中导出给定子载波的信道质量估计。 在至少一个实施例中，无线通信装置实现一种方法，由此被配置为在第一组子载波上接收参考信息; 基于所接收的参考信息，生成频域中的第一信道质量估计; 计算第一组子载波的功率延迟分布; 以及通过根据所述功率延迟分布的延迟扩展，从所述第一信道质量估计外推或者作为所述第一信道质量估计的平均来确定所述第二信道质量估计。
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公开(公告)号：US08385222B2
公开(公告)日：2013-02-26
申请号：US12723255
申请日：2010-03-12
IPC分类号： H04L12/26
CPC分类号： H04L25/022 , H04B17/26 , H04B17/309 , H04B17/364 , H04B17/373 , H04L25/0222 , H04L25/0232
摘要： In one aspect, a method and apparatus derive channel quality estimates for given subcarriers in an OFDM signal, based on reference signal (RS) or other known-signal measurements made for another set of subcarriers. In at least one embodiment, a wireless communication apparatus implements a method whereby it is configured for receiving reference information on the first set of subcarriers; generating the first channel quality estimates in the frequency domain, based on the received reference information; computing a power delay profile for the first set of subcarriers; and determining the second channel quality estimates either by extrapolating from the first channel quality estimates or as an average of the first channel quality estimates, depending on a delay spread of the power delay profile.
摘要翻译： 一方面，一种方法和装置基于参考信号（RS）或对另一组子载波进行的其他已知信号测量，在OFDM信号中导出给定子载波的信道质量估计。 在至少一个实施例中，无线通信装置实现一种方法，由此被配置为在第一组子载波上接收参考信息; 基于所接收的参考信息，生成频域中的第一信道质量估计; 计算第一组子载波的功率延迟分布; 以及通过根据所述功率延迟分布的延迟扩展，从所述第一信道质量估计外推或者作为所述第一信道质量估计的平均来确定所述第二信道质量估计。
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3.发明申请公开(公告)号：US20090117896A1
公开(公告)日：2009-05-07
申请号：US12140990
申请日：2008-06-17
IPC分类号： H04Q7/20
CPC分类号： H04W56/0085 , H04J11/0093 , H04W48/18
摘要： A user equipment is operated in a mobile communications system, wherein a network part of the mobile communications system is capable of operating in a synchronized mode or in an asynchronous mode. Operation includes recording timing information about a periodically occurring signal received from a neighboring cell. The recorded timing information is used in a blind detection process that ascertains whether the network part of the mobile communications system is operating in the synchronized mode or in the asynchronous mode by detecting at least whether the periodically occurring signal received from the neighboring cell occurred within a predetermined window of time of a corresponding periodically occurring signal received from a serving cell. The detected operating mode of the network part of the mobile communications system is used for controlling subsequent operation of the user equipment.
摘要翻译： 用户设备在移动通信系统中操作，其中移动通信系统的网络部分能够以同步模式或异步模式操作。 操作包括记录关于从相邻小区接收的周期性发生的信号的定时信息。 记录的定时信息用于盲检测处理，该盲检测处理确定移动通信系统的网络部分是否以同步模式或异步模式操作，通过至少检测从相邻小区接收到的周期性发生的信号是否发生在 从服务小区接收的相应周期性发生信号的预定窗口。 检测到的移动通信系统的网络部分的操作模式用于控制用户设备的后续操作。
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公开(公告)号：US20090312008A1
公开(公告)日：2009-12-17
申请号：US12141053
申请日：2008-06-17
申请人： Bengt Lindoff , David Astely , Muhammad Ali Kazmi , Johan Nilsson
发明人： Bengt Lindoff , David Astely , Muhammad Ali Kazmi , Johan Nilsson
IPC分类号： H04W24/00
CPC分类号： H04B17/318 , H04B17/15 , H04B17/327 , H04B17/382 , H04J11/0093 , H04L25/022 , H04L25/0224 , H04L27/2647 , H04W36/0083 , H04W36/30 , H04W48/16
摘要： A user equipment (UE) in a cellular telecommunications system is able to detect the uplink/downlink configuration of a detected neighboring cell by receiving a signal from the neighboring cell. A characteristic of the received signal is detected and used as an indicator in a blind detection process to identify one or more downlink slots in the received signal. Known pilot signals in the identified one or more downlink slots can then be used to obtain a signal power measurement of the received signal. The blind detection process is also capable of detecting whether a slot of a neighboring cell's signal is a downlink unicast slot or a Multicast-Broadcast Single Frequency Network slot.
摘要翻译： 蜂窝电信系统中的用户设备（UE）能够通过接收来自相邻小区的信号来检测检测到的相邻小区的上行链路/下行链路配置。 在盲检测处理中检测接收信号的特性并将其用作指示符，以识别接收信号中的一个或多个下行链路时隙。 然后可以使用所识别的一个或多个下行链路时隙中的已知导频信号来获得接收信号的信号功率测量。 盲检测处理还能够检测相邻小区的信号的时隙是下行链路单播时隙还是多播广播单频网络时隙。
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公开(公告)号：US08498599B2
公开(公告)日：2013-07-30
申请号：US12143975
申请日：2008-06-23
IPC分类号： H04B17/00
CPC分类号： H04L25/0224 , H04B17/327 , H04B17/336 , H04L5/0007 , H04L25/0204
摘要： Methods and apparatus in a receiver for estimating a received power of at least one signal having a pattern known to the receiver, the signal having being transmitted by at least one antenna. A method includes using a first method of measuring the received power based on the pattern, the first method generating a first sequence of first power estimates; determining whether a predetermined first event has occurred; and if the first event has occurred, changing to a second method of measuring the received power, the second method being different from the first method and generating a second sequence of second power estimates.
摘要翻译： 用于估计具有接收机已知的模式的至少一个信号的接收功率的接收机中的方法和装置，该信号由至少一个天线发送。 一种方法包括使用基于所述模式来测量所述接收功率的第一方法，所述第一方法生成第一功率估计的第一序列; 确定是否发生了预定的第一事件; 并且如果发生了第一事件，则改变为测量接收功率的第二方法，所述第二方法与第一方法不同，并产生第二功率估计的第二序列。
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6.发明授权公开(公告)号：US08472374B2
公开(公告)日：2013-06-25
申请号：US12140990
申请日：2008-06-17
CPC分类号： H04W56/0085 , H04J11/0093 , H04W48/18
摘要： A user equipment is operated in a mobile communications system, wherein a network part of the mobile communications system is capable of operating in a synchronized mode or in an asynchronous mode. Operation includes recording timing information about a periodically occurring signal received from a neighboring cell. The recorded timing information is used in a blind detection process that ascertains whether the network part of the mobile communications system is operating in the synchronized mode or in the asynchronous mode by detecting at least whether the periodically occurring signal received from the neighboring cell occurred within a predetermined window of time of a corresponding periodically occurring signal received from a serving cell. The detected operating mode of the network part of the mobile communications system is used for controlling subsequent operation of the user equipment.
摘要翻译： 用户设备在移动通信系统中操作，其中移动通信系统的网络部分能够以同步模式或异步模式操作。 操作包括记录关于从相邻小区接收的周期性发生的信号的定时信息。 记录的定时信息用于盲检测处理，该盲检测处理确定移动通信系统的网络部分是否以同步模式或异步模式操作，通过至少检测从相邻小区接收到的周期性发生的信号是否发生在 从服务小区接收的相应周期性发生信号的预定窗口。 检测到的移动通信系统的网络部分的操作模式用于控制用户设备的后续操作。
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公开(公告)号：US07986758B2
公开(公告)日：2011-07-26
申请号：US12187553
申请日：2008-08-07
申请人： Bengt Lindoff , Muhammad Ali Kazmi
发明人： Bengt Lindoff , Muhammad Ali Kazmi
IPC分类号： H04L7/00
CPC分类号： H04B17/336 , H04B7/04
摘要： User Equipment in a wireless communication network considers the downlink channel bandwidth in setting out of synchronization (OoS) and in synchronization (IS) thresholds and filter durations. Additionally, the UE may consider transmitter antenna configuration—that is, the number of transmitting antennas in a MIMO system—in setting the OoS and IS thresholds. The UE determines it is OoS when a monitored, filtered, downlink channel quality metric, such as reference symbol SINR, is below the OoS threshold.
摘要翻译： 无线通信网络中的用户设备考虑到设置不同步（OoS）和同步（IS）阈值和过滤持续时间的下行链路信道带宽。 此外，UE可以在设置OoS和IS阈值时考虑发射机天线配置 - 即MIMO系统中的发射天线的数量。 当监视的，经滤波的下行链路信道质量度量（诸如参考符号SINR）低于OoS阈值时，UE确定它是OoS。
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公开(公告)号：US20100265968A1
公开(公告)日：2010-10-21
申请号：US11962168
申请日：2007-12-21
IPC分类号： H04J3/06
CPC分类号： H04L27/2662 , H04L5/023 , H04L25/0212 , H04L25/0216 , H04L25/022 , H04L25/0224 , H04L27/2607 , H04L27/261 , H04L27/2678 , H04L27/2688 , H04L27/2695 , H04W36/0077
摘要： Disclosed herein are methods and devices for determining a received time difference between a first OFDM signal received from a first base station and a second OFDM signal received from a second base station. The methods and apparatus disclosed herein may be applied to 3GPP LTE systems as well as other OFDM-based wireless communication systems. An exemplary method comprises determining a decoding synchronization time for each of the first and second OFDM signals and calculating a time difference between the respective decoding synchronization times. The calculated time difference is transmitted by the mobile terminal to the first base station, the second base station, or both. Methods and apparatus for processing, at a base station, time difference information calculated according to the methods herein and transmitted to the base station by a mobile terminal are also presented.
摘要翻译： 这里公开了用于确定从第一基站接收的第一OFDM信号与从第二基站接收的第二OFDM信号之间的接收到的时间差的方法和装置。 本文公开的方法和装置可以应用于3GPP LTE系统以及其他基于OFDM的无线通信系统。 一种示例性方法包括确定第一和第二OFDM信号中的每一个的解码同步时间，并计算各个解码同步时间之间的时间差。 所计算的时差由移动终端发送到第一基站，第二基站或二者。 还提出了在基站处理根据本文所述的方法计算并由移动终端发送到基站的时差信息的方法和装置。
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公开(公告)号：US09001791B2
公开(公告)日：2015-04-07
申请号：US12141053
申请日：2008-06-17
申请人： Bengt Lindoff , David Astely , Muhammad Ali Kazmi , Johan Nilsson
发明人： Bengt Lindoff , David Astely , Muhammad Ali Kazmi , Johan Nilsson
CPC分类号： H04B17/318 , H04B17/15 , H04B17/327 , H04B17/382 , H04J11/0093 , H04L25/022 , H04L25/0224 , H04L27/2647 , H04W36/0083 , H04W36/30 , H04W48/16
摘要： A user equipment (UE) in a cellular telecommunications system is able to detect the uplink/downlink configuration of a detected neighboring cell by receiving a signal from the neighboring cell. A characteristic of the received signal is detected and used as an indicator in a blind detection process to identify one or more downlink slots in the received signal. Known pilot signals in the identified one or more downlink slots can then be used to obtain a signal power measurement of the received signal. The blind detection process is also capable of detecting whether a slot of a neighboring cell's signal is a downlink unicast slot or a Multicast-Broadcast Single Frequency Network slot.
摘要翻译： 蜂窝电信系统中的用户设备（UE）能够通过接收来自相邻小区的信号来检测检测到的相邻小区的上行链路/下行链路配置。 在盲检测处理中检测接收信号的特性并将其用作指示符，以识别接收信号中的一个或多个下行链路时隙。 然后可以使用所识别的一个或多个下行链路时隙中的已知导频信号来获得接收信号的信号功率测量。 盲检测处理还能够检测相邻小区的信号的时隙是下行链路单播时隙还是多播广播单频网络时隙。
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公开(公告)号：US08102754B2
公开(公告)日：2012-01-24
申请号：US11962168
申请日：2007-12-21
IPC分类号： H04J11/00
CPC分类号： H04L27/2662 , H04L5/023 , H04L25/0212 , H04L25/0216 , H04L25/022 , H04L25/0224 , H04L27/2607 , H04L27/261 , H04L27/2678 , H04L27/2688 , H04L27/2695 , H04W36/0077
摘要： Disclosed herein are methods and devices for determining a received time difference between a first OFDM signal received from a first base station and a second OFDM signal received from a second base station. The methods and apparatus disclosed herein may be applied to 3GPP LTE systems as well as other OFDM-based wireless communication systems. An exemplary method comprises determining a decoding synchronization time for each of the first and second OFDM signals and calculating a time difference between the respective decoding synchronization times. The calculated time difference is transmitted by the mobile terminal to the first base station, the second base station, or both. Methods and apparatus for processing, at a base station, time difference information calculated according to the methods herein and transmitted to the base station by a mobile terminal are also presented.
摘要翻译： 这里公开了用于确定从第一基站接收的第一OFDM信号与从第二基站接收的第二OFDM信号之间的接收到的时间差的方法和装置。 本文公开的方法和装置可以应用于3GPP LTE系统以及其他基于OFDM的无线通信系统。 一种示例性方法包括确定第一和第二OFDM信号中的每一个的解码同步时间，并计算各个解码同步时间之间的时间差。 所计算的时差由移动终端发送到第一基站，第二基站或二者。 还提出了在基站处理根据本文所述的方法计算并由移动终端发送到基站的时差信息的方法和装置。
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