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1. 发明申请

WO2013046063A1 SPATIALLY RANDOMIZED PILOT SYMBOL TRANSMISSION METHOD, SYSTEM AND DEVICE FOR MIMO WIRELESS COMMUNICATIONS 审中-公开
标题翻译：空间无线通信的空间引导符号传输方法，系统和设备
公开(公告)号：WO2013046063A1
公开(公告)日：2013-04-04
申请号：PCT/IB2012/050454
申请日：2012-01-31
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , HUI, Dennis , GUEY, Jiann-Ching , CHENG, Jung-Fu , BALACHANDRAN, Kumar
发明人： HUI, Dennis , GUEY, Jiann-Ching , CHENG, Jung-Fu , BALACHANDRAN, Kumar
IPC分类号： H04L5/00
CPC分类号： H04B7/0413 , H04B7/0615 , H04B7/0686 , H04L5/0023 , H04L5/005 , H04L25/0204 , H04L25/0226 , H04L2025/03426
摘要： Compressive sampling is used to generate pilot symbols to be transmitted over an array of antennas (117) in a MIMO wireless communications device (100). A pilot symbol is transmitted over the array of antennas according to a spatially randomized antenna transmission function (610) that randomly changes across the array of antennas. The randomized antenna transmission function may randomly select/deselect antennas (810) and/or randomly change amplitude and/or phase (830) of the pilot symbol transmission. Channel estimates can be constructed at a receiver (200) based on the spatially randomized pilot symbols that were transmitted.
摘要翻译：压缩采样用于生成将在MIMO无线通信设备（100）中通过天线阵列（117）传输的导频符号。根据在天线阵列上随机变化的空间随机天线传输功能（610），在天线阵列上传输导频符号。随机天线发送功能可以随机地选择/取消天线（810）和/或随机地改变导频符号传输的幅度和/或相位（830）。可以基于发送的空间上随机的导频符号在接收机（200）处构造信道估计。

2. 发明申请

WO2012123867A1 JOINT MANAGEMENT OF RADIO AND TRANSPORT RESOURCES 审中-公开
标题翻译：无线电和运输资源的联合管理
公开(公告)号：WO2012123867A1
公开(公告)日：2012-09-20
申请号：PCT/IB2012/051101
申请日：2012-03-09
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , GUEY, Jiann-Ching , WONG, Shing-Wa , CHENG, Jung-Fu , HUI, Dennis
发明人： GUEY, Jiann-Ching , WONG, Shing-Wa , CHENG, Jung-Fu , HUI, Dennis
IPC分类号： H04W28/16
CPC分类号： H04W28/16 , H04W72/04 , H04W92/12
摘要： A system for managing radio access resources includes a joint radio resource management/transport resource management unit configured to communicate with a plurality of radio units over a transport network, to jointly allocate radio resources at the radio unit and transport resources on the transport network in response to requests from wireless terminals requesting access to radio resources from the radio units, to send a radio resource allocation schedule to the plurality of radio units that defines radio resource allocations for the wireless terminals, and to generate a transport resource allocation schedule that defines transport resource allocations for the wireless terminals. The system further includes a transport resource controller configured to receive the transport resource allocation schedule and to map user data to physical transport resources on the transport network in response to the transport resource allocation schedule.
摘要翻译：用于管理无线电接入资源的系统包括：联合无线电资源管理/传输资源管理单元，被配置为通过传输网络与多个无线电单元进行通信，以在无线电单元处共同分配无线电资源并响应于传输网络上的资源传输向来自无线单元请求接入无线电资源的无线终端的请求向定义无线终端的无线资源分配的多个无线单元发送无线资源分配调度，并生成定义传输资源的传输资源分配调度为无线终端分配。该系统还包括传输资源控制器，其被配置为接收传输资源分配调度，并且响应于传输资源分配调度，将用户数据映射到传输网络上的物理传输资源。

3. 发明申请

WO2012127364A1 SIGNAL COMPRESSION FOR BACKHAUL COMMUNICATIONS USING LINEAR TRANSFORMATIONS 审中-公开
标题翻译：使用线性变换的反向通信的信号压缩
公开(公告)号：WO2012127364A1
公开(公告)日：2012-09-27
申请号：PCT/IB2012/051192
申请日：2012-03-14
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , HUI, Dennis , CHENG, Jung-Fu , GUEY, Jiann-Ching , KHAYRALLAH, Ali, S. , WONG, Shing-Wa
发明人： HUI, Dennis , CHENG, Jung-Fu , GUEY, Jiann-Ching , KHAYRALLAH, Ali, S. , WONG, Shing-Wa
IPC分类号： H04B7/02 , H03M7/30
CPC分类号： H04B7/024 , H03M7/3068 , H03M7/3082
摘要： A compression/decompression method for backhaul communication of a complex-valued radio signal between base stations and the network processing unit, such as a Central Processor of a Coordinated Multipoint (CoMP) system, significantly reduces backhaul bandwidth. The spatial and temporal correlations of the wireless IQ signal are exploited in order to remove redundancy and substantially reduce signal bandwidth. Feature component signals of significance are extracted through linear transformation to form the radio signal, and are individually quantized, possibly at different bit rates in accordance with their relative importance. The transformation can either be pre-determined or computed in real-time based on the spatial and temporal statistics of the radio signal. In the latter case, the transformation matrix or matrices are also sent over the backhaul in order to allow the radio signal to be reconstructed at the receiving end. Different methods of generating the transformation matrices are proposed.
摘要翻译：用于基站和诸如协调多点（CoMP）系统的中央处理器的网络处理单元之间的复数无线电信号的回程通信的压缩/解压缩方法显着地减少了回程带宽。利用无线IQ信号的空间和时间相关性来消除冗余并显着降低信号带宽。通过线性变换提取有意义的特征分量信号以形成无线电信号，并且可以根据其相对重要性以不同的比特率单独量化。可以基于无线电信号的空间和时间统计来实时地进行转换或者实时地进行转换。在后一种情况下，转换矩阵或矩阵也通过回程发送，以允许在接收端重建无线电信号。提出了生成转换矩阵的不同方法。

4. 发明申请

WO2012123865A1 METHOD OF DOWNLINK SIGNAL TRANSPORT OVER BACKHAUL COMMUNICATIONS THROUGH DISTRIBUTED PROCESSING 审中-公开
标题翻译：通过分布式处理的后向通信的下行信号传输方法
公开(公告)号：WO2012123865A1
公开(公告)日：2012-09-20
申请号：PCT/IB2012/051098
申请日：2012-03-08
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , HUI, Dennis , WONG, Shing-Wa , CHENG, Jung-Fu , GUEY, Jiann-Ching , ZANGI, Kambiz
发明人： HUI, Dennis , WONG, Shing-Wa , CHENG, Jung-Fu , GUEY, Jiann-Ching , ZANGI, Kambiz
IPC分类号： H04B7/02 , H04W92/12 , H04W92/20
CPC分类号： H04L5/0073 , H04B7/024 , H04B7/0452 , H04L5/0035 , H04W92/12 , H04W92/20
摘要： The amount of multi-antenna signals to be transmitted over the backhaul in a Coordinated MultiPoint (CoMP) system from the central processor (CP) to each base station is reduced. Embodiments of the present invention exploit characteristics of the underlying signal structure, and distribute some baseband processing functionalities - such as channel coding and the application of the multi-user precoding - from the CP to the remote base stations. Additionally, in some embodiments the non-precoded parts of multi-antenna signals are broadcast from the CP to all base stations in the CoMP system, to further reduce the burden on backhaul communications. In one embodiment, the backhaul network is a Gigabit-capable Passive Optical Network (GPON).
摘要翻译：通过协调多点（CoMP）系统从中央处理器（CP）到每个基站的回程传输的多天线信号的数量减少了。本发明的实施例利用底层信号结构的特征，并将一些基带处理功能（诸如信道编码和多用户预编码的应用）从CP分发到远程基站。此外，在一些实施例中，多天线信号的非预编码部分从CP广播到CoMP系统中的所有基站，以进一步减少回程通信的负担。在一个实施例中，回程网络是千兆位无源光网络（GPON）。

5. 发明申请

WO2012153204A1 CHANNEL ESTIMATION FOR AVERY LARGE-SCALE MIMO SYSTEM USING PILOT REFERENCE SIGNALS TRANSMITTED ON SELECTED SETS OF TRANSMIT ANTENNAS 审中-公开
标题翻译：使用在选定的发射天线组上传输的引航信号进行大尺度MIMO系统的信道估计
公开(公告)号：WO2012153204A1
公开(公告)日：2012-11-15
申请号：PCT/IB2012/051385
申请日：2012-03-22
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , GUEY, Jiann-Ching , BALACHANDRAN, Kumar , HUI, Dennis
发明人： GUEY, Jiann-Ching , BALACHANDRAN, Kumar , HUI, Dennis
IPC分类号： H04L25/02 , H04B7/06 , H04B7/04
CPC分类号： H04B7/0413 , H04B7/0626 , H04B7/0691 , H04L5/0023 , H04L5/0048 , H04L25/0232 , H04L2025/03808
摘要： A transmitter, receiver, and method for channel estimation for a Multiple - Input Multiple - Output, M1M0, communication system in which the transmitter includes a multiplicity of transmit antennas spaced such that spacing between adjacent antennas provides a spatial correlation coefficient greater than a threshold level The transmitter selects a subset of the multiplicity of transmit antennas for transmitting pilot reference signals. The pilot reference signals are transmitted only from the selected subset of transmit antennas to the receiver. The receiver includes a channel estimator configured to derive a channel estimation for all of the multiplicity of transmit antennas using the received pilot reference signals and knows or estimated spatial correlation among the multiplicity of transmit antennas.
摘要翻译：用于多输入多输出M1M0通信系统的信道估计的发射机，接收机和方法，其中发射机包括多个发射天线，间隔使得相邻天线之间的间隔提供大于阈值水平的空间相关系数发射机选择用于发射导频参考信号的多个发射天线的子集。导频参考信号仅从选定的发射天线子集发射到接收机。接收机包括信道估计器，其被配置为使用所接收的导频参考信号来导出所有多个发射天线的信道估计，并且知道或估计多个发射天线之间的空间相关性。

6. 发明申请

WO2012131442A1 DYNAMIC, DISTRIBUTED COORDINATION OF PARAMETERS IN A CELLULAR TELECOMMUNICATION NETWORK 审中-公开
标题翻译：蜂窝通信网络中参数的动态协调分配
公开(公告)号：WO2012131442A1
公开(公告)日：2012-10-04
申请号：PCT/IB2011/051858
申请日：2011-04-27
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , HUI, Dennis , GUEY, Jiann-Ching
发明人： HUI, Dennis , GUEY, Jiann-Ching
IPC分类号： H04W24/02
CPC分类号： H04W24/02 , H04W16/10
摘要： An apparatus, system, and method for dynamic, distributed coordination of parameters between a plurality of base stations (11a-11g) in a cellular telecommunication network (10). An inter-cell X2+ communication interface (36) connecting each given base station with the given base station's neighboring base stations is extended to communicate parameter settings between the given base station and the neighboring base stations. An apparatus in each given base station receives (22) from the given base station's neighboring base stations, parameter settings being utilized by the neighboring base stations for transmitting and/or receiving in associated neighboring cells. The apparatus utilizes (22) the parameter settings received from the neighboring base stations as factors to determine local parameter settings for the given base station. The given base station then sends (23) the local parameter settings and supplemental information to the neighboring base stations so that optimal network-wide parameter settings can be selected.
摘要翻译：一种用于蜂窝电信网络（10）中的多个基站（11a-11g）之间的参数的动态，分布式协调的装置，系统和方法。将每个给定基站与给定基站的相邻基站连接的小区间X2 +通信接口（36）被扩展以在给定基站和相邻基站之间传送参数设置。每个给定基站中的装置从给定基站的相邻基站接收（22）相邻基站利用的参数设置，用于在相关联的相邻小区中发送和/或接收。该设备利用（22）从相邻基站接收的参数设置作为确定给定基站的本地参数设置的因素。给定的基站然后将本地参数设置和补充信息（23）发送到相邻基站，使得可以选择最佳的全网络参数设置。

7. 发明申请

WO2013011383A1 DISTRIBUTED BEAM SELECTION FOR CELLULAR COMMUNICATION 审中-公开
标题翻译：用于细胞通信的分布式光束选择
公开(公告)号：WO2013011383A1
公开(公告)日：2013-01-24
申请号：PCT/IB2012/052267
申请日：2012-05-07
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , HUI, Dennis , GUEY, Jiann-Ching
发明人： HUI, Dennis , GUEY, Jiann-Ching
IPC分类号： H04W16/28
CPC分类号： H04W16/28
摘要： A group of multiple base stations (10, 12, 14, 20) implements distributed and coordinated antenna beamforming selection to achieve increased performance. Each of the base stations in the group determines an associated optimal set of antenna beam direction parameters in a distributed manner based on local radio information exchanged between neighboring ones of the base stations. Each of the base stations transmits to one or more user equipments (UEs) (18) served by that base station using its associated optimal set of beam direction parameters. The local radio information generated by one of the base stations indicates how the transmissions of its neighbor base stations affect the performance of the base station. The performance of a base station may be measured by the difficulty or challenge in maintaining a minimum desired signal quality, e.g., a minimum SINR, for the UE served by the base station.
摘要翻译：一组多个基站（10,12,14,20）实现分布式和协调的天线波束形成选择，以实现增加的性能。基站中的每个基站基于在相邻基站之间交换的本地无线电信息以分布式方式确定相关联的最佳天线波束方向参数集合。每个基站使用其相关联的最佳波束方向参数集发送到由该基站服务的一个或多个用户设备（UE）（18）。由一个基站产生的本地无线电信息指示其相邻基站的传输如何影响基站的性能。基站的性能可以通过维持基站服务的UE的最小期望信号质量（例如，最小SINR）的难度或挑战来测量。

8. 发明申请

WO2011141836A1 EXPLOITING CHANNEL TIME CORRELATION TO REDUCE CHANNEL STATE INFORMATION FEEDBACK BITRATE 审中-公开
标题翻译：消除通道时间关联以减少通道状态信息反馈双向
公开(公告)号：WO2011141836A1
公开(公告)日：2011-11-17
申请号：PCT/IB2011/051758
申请日：2011-04-21
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CHENG, Jung-Fu , HUI, Dennis , ZANGI, Kambiz , KRASNY, Leonid
发明人： CHENG, Jung-Fu , HUI, Dennis , ZANGI, Kambiz , KRASNY, Leonid
IPC分类号： H04L1/00 , H04B7/06 , H04L1/20 , H04B7/04 , H04B17/00
CPC分类号： H04W72/0413 , H04L1/0019 , H04L1/0028 , H04L1/20 , H04W72/042
摘要： The required bitrate for reporting channel state information from a network transceiver to the network is dramatically reduced, while maintaining fidelity of channel estimates, by exploiting prior channel estimates and the time correlation of channel response. For a selected set of sub-carriers, the transceiver estimates channel frequency response from pilot signals. The transceiver also predicts the frequency response for each selected sub-carrier, by multiplying a state vector comprising prior frequency response estimate and a coefficient vector comprising linear predictive coefficients. The predicted frequency response is subtracted from the estimated frequency response, and the prediction error is quantized and transmitted to the network. The network maintains a corresponding state vector and predictive coefficient vector, and also predicts a frequency response for each selected sub-carrier. The received prediction error is inverse quantized and subtracted from the predicted frequency response to yield a frequency response corresponding to that estimated at the transceiver.
摘要翻译：通过利用先前的信道估计和信道响应的时间相关性，可以显着降低从网络收发器向网络报告信道状态信息所需的比特率，同时保持信道估计的保真度。对于所选择的一组子载波，收发器估计来自导频信号的信道频率响应。收发器还通过将包括先前频率响应估计的状态向量和包括线性预测系数的系数向量相乘来预测每个所选子载波的频率响应。从估计的频率响应中减去预测的频率响应，并将预测误差量化并发送到网络。网络维持相应的状态向量和预测系数向量，并且还预测每个选择的子载波的频率响应。接收的预测误差被反量化，并从预测的频率响应中减去，以产生与在收发机处估计的频率响应相对应的频率响应。

9. 发明申请

WO2010122536A2 CHANNEL STATE INFORMATION RECONSTRUCTION FROM SPARSE DATA 审中-公开
标题翻译：频道数据重新进行信道重建
公开(公告)号：WO2010122536A2
公开(公告)日：2010-10-28
申请号：PCT/IB2010/051808
申请日：2010-04-23
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CHENG, Jung-Fu , ZANGI, Kambiz , HUI, Dennis , KRASNY, Leonid
发明人： CHENG, Jung-Fu , ZANGI, Kambiz , HUI, Dennis , KRASNY, Leonid
IPC分类号： H04L1/00
CPC分类号： H04B17/0047 , H04B7/024 , H04B7/0626 , H04B7/0639 , H04B17/336 , H04B17/364 , H04L1/0003 , H04L1/0009 , H04L1/0019 , H04L1/0026 , H04L1/20 , H04L25/0212 , H04L25/022 , H04L25/0224
摘要： Accurate downlink channe! estimates are catenated based on infrequently transmitted Channel State information (CS!) feedback data from a UE 20. A plurality of non-uniformly spaced digital CSI feedback samples, representing the frequency response of a downlink communication channel, is received from the UE, The received CS! feedback samples are demodulated and inverse quantized. A time domain tap deiay channel model is generated from the inverse quantized CSI feedback samples. The time domain tap delay channe! model may be frequency-transformed to obtain a reconstructed frequency response of the downlink communication channel in the frequency domain. Alternatively, channel delays may be estimated based on prior delays and/or known references signals transmitted on the uplink. Channel estimates between CS! reporting instances may be predicted, such as by a sample & hold or a linear predictor. The delays may be presumed fixed, and Kalman filter coefficients evolved over time.
摘要翻译：准确的下行通道！基于来自UE20的不常发送的信道状态信息（CS！）反馈数据来估计估计值。从UE接收表示下行链路通信信道的频率响应的多个非均匀间隔的数字CSI反馈样本。收到CS！反馈样本被解调和反量化。从逆量化的CSI反馈样本中产生时域抽头信道模型。时域点击延时通道！模型可以被频率变换以获得频域中的下行链路通信信道的重构频率响应。或者，可以基于在上行链路上发送的先前的延迟和/或已知的参考信号来估计信道延迟。频道估计CS！可以预测报告实例，例如通过采样和保持或线性预测器。可以推测延迟是固定的，并且卡尔曼滤波器系数随时间演化。

10. 发明申请

WO2010122535A2 EFFICIENT UPLINK TRANSMISSION OF CHANNEL STATE INFORMATION 审中-公开
标题翻译：高效率上行链路传输信道状态信息
公开(公告)号：WO2010122535A2
公开(公告)日：2010-10-28
申请号：PCT/IB2010/051807
申请日：2010-04-23
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CHENG, Jung-Fu , ZANGI, Kambiz , HUI, Dennis , KRASNY, Leonid
发明人： CHENG, Jung-Fu , ZANGI, Kambiz , HUI, Dennis , KRASNY, Leonid
IPC分类号： H04L1/00
CPC分类号： H04B17/0047 , H04B7/024 , H04B7/0626 , H04B7/0639 , H04B17/336 , H04B17/364 , H04L1/0003 , H04L1/0009 , H04L1/0019 , H04L1/0026 , H04L1/20 , H04L25/0212 , H04L25/022 , H04L25/0224
摘要： A UE in a wireless communication network transmits succinct, direct channel state information to the network, enabling coordinated multipoint calculations such as joint processing, without substantially increasing uplink overhead. The UE receives and processes reference symbols over a set of non-uniform!y spaced sub-carriers, selected according to a scheme synchronized to the network. The frequency response for each selected sub- carrier is estimated conventionally, and the results quantized and transmitted to the network on an uplink control channel. The non-uniform sub-carrier selection may be synchronized to the network in a variety of ways.
摘要翻译：无线通信网络中的UE向网络发送简洁的直接信道状态信息，实现诸如联合处理之类的协作多点计算，而基本上不增加上行链路开销。 UE根据与网络同步的方案选择的一组不均匀的间隔子载波上接收和处理参考符号。常规地估计每个所选子载波的频率响应，并且在上行链路控制信道上量化并发送到网络的结果。非均匀子载波选择可以以各种方式与网络同步。

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