公开(公告)号：US08125885B2

公开(公告)日：2012-02-28

申请号：US12501996

申请日：2009-07-13

申请人： Pierre Bertrand ,  Tarik Muharemovic ,  Slaheddine Aridhi

发明人： Pierre Bertrand ,  Tarik Muharemovic ,  Slaheddine Aridhi

IPC分类号： H04J11/00

CPC分类号： H04L27/2657 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0228 ,  H04L27/2636 ,  H04L27/2675

摘要： A method of wireless transmission for estimating the carrier frequency offset in a base station of a received transmission from a user equipment (UE) accessing a radio access network. The method time de-multiplexes selected symbols of a received sub-frame, computes the frequency-domain symbols received from each antenna through an FFT, de-maps the UEs selected sub-carriers for each antenna, computes metrics associated to a carrier frequency offset hypothesis spanning a searched frequency offset window, repeats these steps on subsequent received sub-frames from the UE over an estimation interval duration, non-coherently accumulates the computed metrics and selects the carrier frequency offset hypothesis with largest accumulated metric amplitude.

摘要翻译： 一种无线传输方法，用于估计来自接入无线电接入网络的用户设备（UE）接收的传输的基站中的载波频率偏移。 所述方法时间对所接收的子帧的所选符号进行解复用，通过FFT计算从每个天线接收的频域符号，对每个天线的UE选择的子载波去映射，计算与载波频率偏移相关联的度量 跨越搜索的频率偏移窗口的假设，在估计间隔持续时间上重复来自UE的后续接收到的子帧的这些步骤，非相干地累加所计算的度量，并选择具有最大累积度量幅度的载波频率偏移假设。

公开(公告)号：US20100080112A1

公开(公告)日：2010-04-01

申请号：US12501996

申请日：2009-07-13

申请人： Pierre Bertrand ,  Tarik Muharemovic ,  Slaheddine Aridhi

发明人： Pierre Bertrand ,  Tarik Muharemovic ,  Slaheddine Aridhi

IPC分类号： H04J11/00 ,  H04B7/208 ,  H04L27/28

CPC分类号： H04L27/2657 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0228 ,  H04L27/2636 ,  H04L27/2675

摘要： A method of wireless transmission for estimating the carrier frequency offset in a base station of a received transmission from a user equipment (UE) accessing a radio access network. The method time de-multiplexes selected symbols of a received sub-frame, computes the frequency-domain symbols received from each antenna through an FFT, de-maps the UEs selected sub-carriers for each antenna, computes metrics associated to a carrier frequency offset hypothesis spanning a searched frequency offset window, repeats these steps on subsequent received sub-frames from the UE over an estimation interval duration, non-coherently accumulates the computed metrics and selects the carrier frequency offset hypothesis with largest accumulated metric amplitude.

摘要翻译： 一种无线传输方法，用于估计来自接入无线电接入网络的用户设备（UE）接收的传输的基站中的载波频率偏移。 所述方法时间对所接收的子帧的所选符号进行解复用，通过FFT计算从每个天线接收的频域符号，对每个天线的UE选择的子载波去映射，计算与载波频率偏移相关联的度量 跨越搜索的频率偏移窗口的假设，在估计间隔持续时间上重复来自UE的后续接收到的子帧的这些步骤，非相干地累加所计算的度量，并选择具有最大累积度量幅度的载波频率偏移假设。

公开(公告)号：US20090073944A1

公开(公告)日：2009-03-19

申请号：US12209403

申请日：2008-09-12

申请人： Jing Jiang ,  Pierre Bertrand ,  Tarik Muharemovic

发明人： Jing Jiang ,  Pierre Bertrand ,  Tarik Muharemovic

IPC分类号： H04W8/00

CPC分类号： H04J13/0062 ,  H04J11/00 ,  H04J13/22 ,  H04L5/0007

摘要： Transmission of random access preamble structures within a cellular wireless network is based on the use of cyclic shifted constant amplitude zero autocorrelation (“CAZAC”) sequences to generate the random access preamble signal. A pre-defined set of sequences is arranged in a specific order. Within the predefined set of sequences is an ordered group of sequences that is a proper subset of the pre-defined set of sequences. Within a given cell, up to 64 sequences may need to be signaled. In order to minimize the associated overhead due to signaling multiple sequences, only one logical index is transmitted by a base station serving the cell and a user equipment within the cell derives the subsequent indexes according to the pre-defined ordering. Each sequence has a unique logical index. The ordering of sequences is identified by the logical indexes of the sequences, with each logical index uniquely mapped to a generating index. When a UE needs to transmit, it produces a second sequence using the received indication of the logical index of the first sequence and an auxiliary value and then produces a transmission signal by modulating the second sequence. The auxiliary value is selected from one of two sets based on a set indicator broadcast by the eNB

摘要翻译： 蜂窝无线网络内的随机接入前同步码结构的传输是基于使用循环移位恒幅零自相关（“CAZAC”）序列来生成随机接入前同步信号的。 按照特定顺序排列预定义的序列集合。 在预定义的序列集合内，是序列的有序组，其是预定义序列集合的适当子集。 在给定的小区内，可能需要发信号通知多达64个序列。 为了最小化由于信令多个序列引起的相关开销，仅由服务于小区的基站发送一个逻辑索引，并且小区内的用户设备根据预定义的顺序导出后续索引。 每个序列都有唯一的逻辑索引。 序列的顺序由序列的逻辑索引识别，每个逻辑索引唯一映射到生成索引。 当UE需要发送时，其使用接收到的第一序列的逻辑索引的指示和辅助值产生第二序列，然后通过调制第二序列来产生传输信号。 基于由eNB广播的设定指示符，从两组中选择一个辅助值

公开(公告)号：US20090040918A1

公开(公告)日：2009-02-12

申请号：US12139814

申请日：2008-06-16

申请人： Jing Jiang ,  Tarik Muharemovic ,  Pierre Bertrand

发明人： Jing Jiang ,  Tarik Muharemovic ,  Pierre Bertrand

IPC分类号： H04J11/00

CPC分类号： H04B1/59

摘要： This invention is a method for preamble detection with estimation of UE timing advance (TA) and channel quality information (CQI) which uses a sliding window to detect the preamble and estimate user timing advance and channel quality information. The window length is set to the cyclic prefix length of data transmission. A preamble detection threshold is computed semi-analytically according to noise sample statistics.

摘要翻译： 本发明是一种用于使用滑动窗口来检测前导码并估计用户定时提前和信道质量信息的UE定时提前（TA）和信道质量信息（CQI）的估计的前导码检测方法。 窗口长度设置为数据传输的循环前缀长度。 根据噪声样本统计，半解析地计算前导码检测阈值。

公开(公告)号：US20080267161A1

公开(公告)日：2008-10-30

申请号：US12109520

申请日：2008-04-25

申请人： Pierre Bertrand ,  Tarik Muharemovic ,  Jing Jiang

发明人： Pierre Bertrand ,  Tarik Muharemovic ,  Jing Jiang

IPC分类号： H04B7/212

CPC分类号： H04W16/02 ,  H04W74/008 ,  H04W74/0833 ,  H04W74/0866

摘要： Embodiments of the present disclosure provide a base station sub-system, a method of allocating random access configurations and a method of downlink signaling of random access configurations. In one embodiment, the base station sub-system is for use in a wireless communication system and includes an allocator configured to allocate random access configurations having a plurality of time slots that use a single frequency resource. Additionally, the base station sub-system also includes a transmitter configured to signal at least one index of the random access configurations and a random access receiver balancing in time the processing load of the random access detection of different cells served by the base station.

摘要翻译： 本公开的实施例提供了一种基站子系统，分配随机接入配置的方法和随机接入配置的下行链路信令的方法。 在一个实施例中，基站子系统用于无线通信系统，并且包括配置为分配具有使用单个频率资源的多个时隙的随机接入配置的分配器。 另外，基站子系统还包括被配置为发送随机接入配置的至少一个索引的发射机和随机接入接收机在时间上平衡由基站服务的不同小区的随机接入检测的处理负载。

公开(公告)号：US08098745B2

公开(公告)日：2012-01-17

申请号：US11691549

申请日：2007-03-27

申请人： Pierre Bertrand ,  Jing Jiang ,  Shantanu Kangude ,  Tarik Muharemovic

发明人： Pierre Bertrand ,  Jing Jiang ,  Shantanu Kangude ,  Tarik Muharemovic

IPC分类号： H04K1/10

CPC分类号： H04W74/08 ,  H04J13/00 ,  H04J13/14 ,  H04L5/0044 ,  H04L5/006 ,  H04L27/2602 ,  H04W74/002 ,  H04W74/0833

摘要： Apparatus and methods for accessing a wireless telecommunications network by transmitting a random access signal. The random access signal includes a random access preamble signal selected from a set of random access preamble signals constructed by cyclically shift selected root CAZAC sequences. The random access signal may be one or more transmission sub-frames in duration, the included random access preamble sequence's length being extended with the signal to provide improved signal detection performance in larger cells and in higher interference environments. The random access signal may include a wide-band pilot signal facilitating base station estimation of up-link frequency response in some situations. Each of the plurality of available random access preamble sequences may be assigned a unique information value. The base station may use the information encoded in the random access preamble to prioritize responses and resource allocations. Random access signal collisions are dealt with by a combination of preamble code space randomness and back-off procedures.

摘要翻译： 通过发送随机接入信号来接入无线电信网络的装置和方法。 随机接入信号包括从由循环移位选择的根CAZAC序列构成的一组随机接入前同步信号中选择的随机接入前导信号。 随机接入信号可以是持续时间中的一个或多个传输子帧，所包含的随机接入前同步码序列的长度随信号扩展，以在较大的小区和较高的干扰环境中提供改善的信号检测性能。 随机接入信号可以包括宽带导频信号，有助于在某些情况下基站估计上行链路频率响应。 可以为多个可用随机接入前导码序列中的每一个分配唯一的信息值。 基站可以使用在随机接入前导码中编码的信息来优先处理响应和资源分配。 随机接入信号冲突由前导码空间随机性和退避程序的组合来处理。

公开(公告)号：US08064546B2

公开(公告)日：2011-11-22

申请号：US12139814

申请日：2008-06-16

申请人： Jing Jiang ,  Tarik Muharemovic ,  Pierre Bertrand

发明人： Jing Jiang ,  Tarik Muharemovic ,  Pierre Bertrand

IPC分类号： H04L27/06 ,  H04L1/02

CPC分类号： H04B1/59

摘要： This invention is a method for preamble detection with estimation of UE timing advance (TA) and channel quality information (CQI) which uses a sliding window to detect the preamble and estimate user timing advance and channel quality information. The window length is set to the cyclic prefix length of data transmission. A preamble detection threshold is computed semi-analytically according to noise sample statistics.

摘要翻译： 本发明是一种用于使用滑动窗口来检测前导码并估计用户定时提前和信道质量信息的UE定时提前（TA）和信道质量信息（CQI）的估计的前导码检测方法。 窗口长度设置为数据传输的循环前缀长度。 根据噪声样本统计，半解析地计算前导码检测阈值。

公开(公告)号：US20070230600A1

公开(公告)日：2007-10-04

申请号：US11691549

申请日：2007-03-27

申请人： Pierre Bertrand ,  Jing Jiang ,  Shantanu Kangude ,  Tarik Muharemovic

发明人： Pierre Bertrand ,  Jing Jiang ,  Shantanu Kangude ,  Tarik Muharemovic

IPC分类号： H04K1/10

CPC分类号： H04W74/08 ,  H04J13/00 ,  H04J13/14 ,  H04L5/0044 ,  H04L5/006 ,  H04L27/2602 ,  H04W74/002 ,  H04W74/0833

摘要： Apparatus and methods for accessing a wireless telecommunications network by transmitting a random access signal. The random access signal includes a random access preamble signal selected from a set of random access preamble signals constructed by cyclically shift selected root CAZAC sequences. The random access signal may be one or more transmission sub-frames in duration, the included random access preamble sequence's length being extended with the signal to provide improved signal detection performance in larger cells and in higher interference environments. The random access signal may include a wide-band pilot signal facilitating base station estimation of up-link frequency response in some situations. Each of the plurality of available random access preamble sequences may be assigned a unique information value. The base station may use the information encoded in the random access preamble to prioritize responses and resource allocations. Random access signal collisions are dealt with by a combination of preamble code space randomness and back-off procedures.

摘要翻译： 通过发送随机接入信号来接入无线电信网络的装置和方法。 随机接入信号包括从由循环移位选择的根CAZAC序列构成的一组随机接入前同步信号中选择的随机接入前导信号。 随机接入信号可以是持续时间中的一个或多个传输子帧，所包含的随机接入前同步码序列的长度随信号扩展，以在较大的小区和较高的干扰环境中提供改善的信号检测性能。 随机接入信号可以包括宽带导频信号，有助于在某些情况下基站估计上行链路频率响应。 可以为多个可用随机接入前导码序列中的每一个分配唯一的信息值。 基站可以使用在随机接入前导码中编码的信息来优先处理响应和资源分配。 随机接入信号冲突由前导码空间随机性和退避程序的组合来处理。

公开(公告)号：US08773968B2

公开(公告)日：2014-07-08

申请号：US12184239

申请日：2008-07-31

申请人： Jing Jiang ,  Pierre Bertrand ,  Tarik Muharemovic

发明人： Jing Jiang ,  Pierre Bertrand ,  Tarik Muharemovic

IPC分类号： H04W4/00 ,  H04L12/26 ,  H04L27/28 ,  G06F17/15

CPC分类号： H04L5/0007 ,  H04J13/0059 ,  H04J13/0062 ,  H04J13/0074 ,  H04L27/2601 ,  H04L27/2607 ,  H04L27/2613 ,  H04W74/08

摘要： Transmission of random access preamble structures within a cellular wireless network is based on the use of cyclic shifted constant amplitude zero autocorrelation (“CAZAC”) sequences to generate the random access preamble signal. A pre-defined set of sequences is arranged in a specific order. Within the predefined set of sequences is an ordered group of sequences that is a proper subset of the pre-defined set of sequences. Within a given cell, up to 64 sequences may need to be signaled. In order to minimize the associated overhead due to signaling multiple sequences, only one logical index is transmitted by a base station serving the cell and a user equipment within the cell derives the subsequent indexes according to the pre-defined ordering. Each sequence has a unique logical index. The ordering of sequences is identified by the logical indexes of the sequences, with each logical index uniquely mapped to a generating index. When a UE needs to transmit, it produces a second sequence using the received indication of the logical index of the first sequence and an auxiliary parameter and then produces a transmission signal by modulating the second sequence.

摘要翻译： 蜂窝无线网络内的随机接入前同步码结构的传输是基于使用循环移位恒幅零自相关（“CAZAC”）序列来生成随机接入前同步信号的。 按照特定顺序排列预定义的序列集合。 在预定义的序列集合内，是序列的有序组，其是预定义序列集合的适当子集。 在给定的小区内，可能需要发信号通知多达64个序列。 为了最小化由于信令多个序列引起的相关开销，仅由服务于小区的基站发送一个逻辑索引，并且小区内的用户设备根据预定义的顺序导出后续索引。 每个序列都有唯一的逻辑索引。 序列的顺序由序列的逻辑索引识别，每个逻辑索引唯一映射到生成索引。 当UE需要发送时，它使用接收到的第一序列的逻辑索引的指示和辅助参数产生第二序列，然后通过调制第二序列来产生传输信号。

公开(公告)号：US08199706B2

公开(公告)日：2012-06-12

申请号：US11925520

申请日：2007-10-26

申请人： Pierre Bertrand ,  Tarik Muharemovic ,  Jing Jiang

发明人： Pierre Bertrand ,  Tarik Muharemovic ,  Jing Jiang

IPC分类号： H04W4/00 ,  H04J3/06

CPC分类号： H04L27/2613 ,  H04L27/2636 ,  H04W64/006 ,  H04W74/0866

摘要： UE-initiated accesses within a cellular network are optimized to account for Doppler shift. A user equipment (UE) receives information that designates a particular access slot as high-speed and designates another access slot as low-speed within a given cell. The UE determines its relative speed to a serving base station (NodeB) within the cell. The UE selects either a baseline structure or an alternate structure if the relative speed is less than a threshold value or only an alternate structure if the relative speed exceeds the threshold value. The UE transmits a signal to the NodeB using the selected structure, such that the baseline structure is transmitted only in the designated low-speed access slot and that the alternate structure is transmitted only in the designated high-speed request slot.

摘要翻译： UE发起的蜂窝网络中的接入被优化以考虑多普勒频移。 用户设备（UE）以特定小区的速度接收指定特定接入时隙的信息，并指定另一接入时隙为低速。 UE确定其与小区内的服务基站（NodeB）的相对速度。 如果相对速度小于阈值，则UE选择基线结构或替代结构，或者如果相对速度超过阈值，则UE选择替代结构。 UE使用所选择的结构向NodeB发送信号，使得仅在指定的低速接入时隙中发送基线结构，并且仅在指定的高速请求时隙中发送替代结构。