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1. 发明申请

WO2011085082A2 AUGMENTED WIRELESS FEEDBACK 审中-公开
标题翻译：已通知无线反馈
公开(公告)号：WO2011085082A2
公开(公告)日：2011-07-14
申请号：PCT/US2011/020346
申请日：2011-01-06
申请人： INTERDIGITAL PATENT HOLDINGS, INC. , PORAT, Ron , PIETRASKI, Philip, J. , LI, Yingxue, K. , SHENG, Hongsan
发明人： PORAT, Ron , PIETRASKI, Philip, J. , LI, Yingxue, K. , SHENG, Hongsan
IPC分类号： H04B7/06
CPC分类号： H04B7/063 , H04B7/0639 , H04B7/065
摘要： Methods and systems for transmitting feedback and precoding matrix indicators (PMI) include determining PMI and rank-1 or rank-2 feedback, determining a difference, referred to as a delta metric, between the PMI and its preferred feedback matrix, and transmitting the delta metric to a base station. The timing of delta metric transmissions can be based on detecting the exceeding of a threshold, intervals signaled by a base station, or other factors. Overhead may be reduced by manipulating a determined delta metric so that fewer complex values need to be transmitted and a base station can estimate values of the delta metric that are not transmitted. The delta metric may be mapped using phase and/or amplitude modulation methods. Delta metric transmissions may be repeated by alternately transmitting elements of the delta metric and complex conjugates of those elements.
摘要翻译：用于发送反馈和预编码矩阵指示符（PMI）的方法和系统包括确定PMI和rank-1或rank-2反馈，确定PMI和其优选的反馈矩阵之间的差异（称为增量度量），并且将Δ 到基站的度量。增量度量传输的定时可以基于检测到超过阈值，由基站发信号的间隔或其他因素。可以通过操纵确定的增量度量来减少开销，使得需要发送更少的复数值，并且基站可以估计未发送的增量度量的值。可以使用相位和/或幅度调制方法来映射增量度量。可以通过交替地发送这些元件的增量度量和复共轭的元素来重复Delta度量传输。

2. 发明申请

WO2012075387A1 SYSTEMS AND METHODS FOR IMPROVING CHANNEL QUALITY INDICATION FEEDBACK ACCURACY IN WIRELESS COMMUNICATION USING INTERFERENCE PREDICTION 审中-公开
标题翻译：使用干扰预测在无线通信中提高信道质量指示反馈精度的系统和方法
公开(公告)号：WO2012075387A1
公开(公告)日：2012-06-07
申请号：PCT/US2011/063052
申请日：2011-12-02
申请人： INTERDIGITAL PATENT HOLDINGS, INC. , LI, Yingxue, K. , PIETRASKI, Philip, J. , LEVY, Joseph, S. , SHENG, Hongsan
发明人： LI, Yingxue, K. , PIETRASKI, Philip, J. , LEVY, Joseph, S. , SHENG, Hongsan
IPC分类号： H04L1/00 , H04B7/02
CPC分类号： H04W72/085 , H04B7/024 , H04B7/0417 , H04B7/0452 , H04B7/0632 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L2001/0093
摘要： Systems and methods for channel quality indicator (CQI) feedback may be disclosed. At a current transmission time interval, precoder and/or modulation information that may be used at or associated with a future transmission time interval may be determined. As such, at a current transmission time interval, precoder and/or modulation information that may be used to select a modulation or coding scheme (MCS) and/or schedule transmission at a future transmission time interval may be predicted in the current transmission time interval. The precoder and/or modulation information may be broadcast and received such that the information may be used to estimate a channel quality indicator (CQI) at the current transmission time interval. The estimated CQI may be used to select a modulation and coding scheme (MCS), schedule transmissions, and the like.
摘要翻译：可以公开用于信道质量指示符（CQI）反馈的系统和方法。在当前的传输时间间隔，可以确定可在未来传输时间间隔中或与之相关联的预编码器和/或调制信息。这样，在当前传输时间间隔，可以在当前传输时间间隔中预测可用于选择调制或编码方案（MCS）和/或调度传输的预编码器和/或调制信息。可以广播和接收预编码器和/或调制信息，使得可以使用该信息来估计当前传输时间间隔的信道质量指示符（CQI）。估计的CQI可以用于选择调制和编码方案（MCS），调度传输等。

3. 发明申请

WO2011146606A1 METHOD AND APPARATUS FOR COMPRESSING CHANNEL STATE INFORMATION BASED ON PATH LOCATION INFORMATION 审中-公开
标题翻译：基于路径位置信息压缩信道状态信息的方法和装置
公开(公告)号：WO2011146606A1
公开(公告)日：2011-11-24
申请号：PCT/US2011/036985
申请日：2011-05-18
申请人： INTERDIGITAL PATENT HOLDINGS, INC. , SHENG, Hongsan , LI, Yingxue , PIETRASKI, Philip J. , WANG, Carl , PORAT, Ron
发明人： SHENG, Hongsan , LI, Yingxue , PIETRASKI, Philip J. , WANG, Carl , PORAT, Ron
IPC分类号： H04B7/06 , H04B7/04
CPC分类号： H04W28/20 , H04B7/0413 , H04B7/0626 , H04B7/0634 , H04B7/065 , H04B7/0663
摘要： Methods and apparatus are described for compressing channel state information (CSI) in time-domain based on path location information for CSI feedback. Downlink (DL) CSI is compressed in the time domain and fed back by not sending the multipath location information, or sending at a very low rate. In one method, a wireless transmit/receive unit (WTRU) selects the strongest multipath components based on channel characteristics. The multipath components are quantized in the time domain via direct or vector based quantization. The base station reconstructs a channel impulse response from the fed back quantized multipath components and applies same to precoding processing. In another method, the WTRU feeds back information associated with a narrowband portion(s) of a system spectrum. The selected narrowband portion(s) have sufficient density over time to allow good precoding per subband or across the system spectrum. Short term feedback may be augmented with long term channel information.
摘要翻译：描述了用于基于CSI反馈的路径位置信息在时域中压缩信道状态信息（CSI）的方法和装置。下行链路（DL）CSI在时域中被压缩，并且通过不发送多路径位置信息或以非常低的速率发送来反馈。在一种方法中，无线发射/接收单元（WTRU）基于信道特性选择最强的多径分量。多径分量通过直接或矢量量化在时域中量化。基站从反馈量化多路径分量重构信道脉冲响应，并将其应用于预编码处理。在另一种方法中，WTRU反馈与系统频谱的窄带部分相关联的信息。所选择的窄带部分随着时间具有足够的密度，以允许每个子带或跨系统频谱的良好预编码。短期反馈可能会增加长期渠道信息。

4. 发明申请

WO2012125931A1 METHODS FOR PROVIDING PRECODING AND FEEDBACK AND BASE STATION 审中-公开
标题翻译：提供预测和反馈和基站的方法
公开(公告)号：WO2012125931A1
公开(公告)日：2012-09-20
申请号：PCT/US2012/029453
申请日：2012-03-16
申请人： INTERDIGITAL PATENT HOLDINGS, INC. , LI, Yingxue, K. , SHENG, Hongsan , ZHANG, Guodong , OLESEN, Robert, L. , LU, Enoch , LU, I-tai
发明人： LI, Yingxue, K. , SHENG, Hongsan , ZHANG, Guodong , OLESEN, Robert, L. , LU, Enoch , LU, I-tai
IPC分类号： H04B7/06
CPC分类号： H04B7/0626 , H04B7/0617 , H04B7/065
摘要： Beamforming, precoding, and feedback systems and methods are provided. For example, user equipment (UE) estimates an effective channel using a predetermined channel independent matrix or beamforming. Such an effective channel estimate along with other feedback information including a channel quality indicator (CQI) and a precoding matrix indicator (PMI) is fed back to an eNB. The eNB may precode data and may provide channel estimation at the eNB using a double codebook or double precoder. For example, the eNB may precode data based on the feedback information (e.g. using a channel dependent precoder) and the eNB may precode the data based on the channel independent matrix (e.g. using a channel independent precoder) that may be channel independent and/or preset (e.g. known to both eNB and UE), and may change each TTI. Such precoding along with scaling factors approximated from the PMI or CQI feedback may be used to enable the eNB to estimate a channel based covariance matrix and design the channel dependent precoder.
摘要翻译：提供波束形成，预编码和反馈系统和方法。例如，用户设备（UE）使用预定的信道无关矩阵或波束形成来估计有效信道。将这样的有效信道估计与包括信道质量指示符（CQI）和预编码矩阵指示符（PMI）的其他反馈信息一起反馈给eNB。 eNB可以预编码数据，并且可以使用双码本或双重预编码器在eNB处提供信道估计。例如，eNB可以基于反馈信息（例如，使用信道相关预编码器）对数据进行预编码，并且eNB可以基于与信道无关的矩阵（例如，使用信道独立的预编码器）对数据进行预编码，该矩阵可以是信道独立的和/或预置（例如，已知的eNB和UE），并且可以改变每个TTI。这样的预编码以及从PMI或CQI反馈近似的缩放因子可以用于使得eNB能够估计基于信道的协方差矩阵并设计信道相关预编码器。

5. 发明申请

WO2012031098A1 ITERATIVE NONLINEAR PRECODING AND FEEDBACK FOR MULTI-USER MULTIPLE -INPUT MULTIPLE-OUTPUT (MU-MIMO) WITH CHANNEL STATE INFORMATION(CSI) IMPAIRMENTS 审中-公开
标题翻译：用于多用户多输入多输出（MU-MIMO）的迭代非线性预处理和反馈与信道状态信息（CSI）的重要性
公开(公告)号：WO2012031098A1
公开(公告)日：2012-03-08
申请号：PCT/US2011/050176
申请日：2011-09-01
申请人： INTERDIGITAL PATENT HOLDINGS, INC. , SHENG, Hongsan , LI, Yingxue, K.
发明人： SHENG, Hongsan , LI, Yingxue, K.
IPC分类号： H04L25/03 , H04L1/00 , H04B1/06
CPC分类号： H04B7/0417 , H04B7/0452 , H04B7/0465 , H04B7/0478 , H04B7/0626 , H04B7/063 , H04B7/0632 , H04B7/0654 , H04B7/0663 , H04L1/0026 , H04L5/0007 , H04L25/0202 , H04L25/03343 , H04L25/4975 , H04L2025/03802
摘要： An iterative nonlinear preceding method based on, for example. Tornlinson- Harashima Preceding (THP) may be implemented in a MU-MIMO system to alleviate the performance degradation due to mismatches between actual Channel State Information (CSI) and impaired CSI available at a transmitter. In such a method, the effective channel may be fed back rather than a nonprecoded channel for a relay backhaul channel such that the iterative preecoding and effective channel feedback may reduce the sensitivity to quantization errors and improve spectrum usage efficiency. Additionally, a Channel Quality Indicator (CQI) may be used to estimate a signal-to-interference-plus-noise (SINK) ratio based on quantization errors to accurately derive the effective channel quality of the receiver.
摘要翻译：例如，基于迭代非线性的前述方法。 Tornlinson-Harashima之前（THP）可以在MU-MIMO系统中实现，以减轻由于实际信道状态信息（CSI）与发射机可用的受损CSI之间的不匹配而导致的性能下降。在这种方法中，有效信道可以被反馈而不是用于中继回程信道的非重新编码信道，使得迭代预编码和有效信道反馈可以降低对量化误差的灵敏度并提高频谱使用效率。此外，可以使用信道质量指示符（CQI）来基于量化误差来估计信号与干扰加噪声（SINK）比，以精确地导出接收机的有效信道质量。

6. 发明申请

WO2012006005A3 DEMODULATION REFERENCE SIGNAL BASED CHANNEL STATE INFORMATION FEEDBACK IN OFDM-MIMO SYSTEMS 审中-公开
公开(公告)号：WO2012006005A3
公开(公告)日：2012-01-12
申请号：PCT/US2011/041985
申请日：2011-06-27
申请人： INTERDIGITAL PATENT HOLDINGS, INC. , LI, Yingxue , SHENG, Hongsan , ZHANG, Guodong , PIETRASKI, Philip J.
发明人： LI, Yingxue , SHENG, Hongsan , ZHANG, Guodong , PIETRASKI, Philip J.
IPC分类号： H04L25/02 , H04L25/03 , H04L5/00 , H04L1/00
摘要： A method and apparatus for using demodulation reference signal (DM-RS) based channel state information (CSI) feedback in Orthogonal Frequency Division Multiplexing - multiple-input multiple-output (OFDM-MIMO) systems is disclosed. The wireless transmit/receive unit (WTRU) receives one or more resource blocks from a base station, wherein the resource blocks (RBs) include demodulating reference signals (DM-RS) and precoder information. The precoder information is sent unicast or broadcasted over a common control channel. The WTRU estimates an effective channel estimate based on the DM-RS, derives an unprecoded channel based on the effective channel and the precoder information, generates CSI feedback based on the unprecoded channel, and transmits the CSI feedback to the base station. Alternatively, the WTRU estimates an effective channel estimate based on the DM-RS, quantizes the effective channel estimate and transmits the CSI feedback to the base station.

7. 发明申请

WO2013181369A1 MEASUREMENTS AND INTERFERENCE AVOIDANCE FOR DEVICE-TO-DEVICE LINKS 审中-公开
标题翻译：用于设备到设备链路的测量和干扰避免
公开(公告)号：WO2013181369A1
公开(公告)日：2013-12-05
申请号：PCT/US2013/043325
申请日：2013-05-30
申请人： INTERDIGITAL PATENT HOLDINGS, INC.
发明人： VANGANURU, Kiran, K. , SHENG, Hongsan , STERNBERG, Gregory, S. , DENG, Tao , RAGHOTHAMAN, Balaji , PRAGADA, Ravikumar, V. , DENG, Zhuorong , FERRANTE, Steven , MARINIER, Paul , PELLETIER, Benoit , PANI, Diana
IPC分类号： H04L5/00
CPC分类号： H04W24/08 , H04L1/20 , H04L5/0007 , H04L5/0051
摘要： Disclosed herein are measurement and interference avoidance for direct device-to-device (D2D) links. A method may be implemented by a wireless transmit/receive unit (WTRU). The method may include determining a sounding reference signal (SRS) to detect high interference and facilitate measurements on a link with another WTRU. The method may also include using the SRS on a direct link with another WTRU.
摘要翻译：这里公开了直接设备到设备（D2D）链路的测量和干扰避免。无线发射/接收单元（WTRU）可以实现一种方法。该方法可以包括确定探测参考信号（SRS）以检测高干扰并促进对与另一WTRU的链路的测量。该方法还可以包括在与另一WTRU的直接链路上使用SRS。

8. 发明申请

WO2013086362A1 DIRECT COMMUNICATION BETWEEN WIRELESS TRANSMIT/RECEIVE UNITS (WTRUS) IN ADVANCED TOPOLOGY (AT) APPLICATIONS 审中-公开
标题翻译：无线传输/接收单元（WTRUS）在高级拓扑（AT）应用中的直接通信
公开(公告)号：WO2013086362A1
公开(公告)日：2013-06-13
申请号：PCT/US2012/068502
申请日：2012-12-07
申请人： INTERDIGITAL PATENT HOLDINGS, INC.
发明人： DENG, Zhuorong , PRAGADA, Ravikumar V. , STERNBERG, Gregory S. , RAGHOTHAMAN, Balaji , DENG, Tao , VANGANURU, Kiran K. , SHENG, Hongsan , FERRANTE, Steven
IPC分类号： H04W72/12
CPC分类号： H04W72/02 , H04L47/36 , H04W76/14 , H04W88/04
摘要： Direct communication (radio cross link) between nodes (UEs) in advanced topology (LTE) applications. A method includes a first node (user equipment, UE) receiving a cross link grant specifying resources for use by at least the first node (UE) for transmission on the radio cross link (direct link). The first node also performs cross link scheduling per transmission time interval (TTI) within the resources specified in the cross link grant and transmits at least one packet to a second node (second UE) based on the cross link scheduling grant per TTI. In another embodiment, y wireless transmit/receive unit, WTRU (UE), adapted to discard stalled (stored) RLC protocol data units, PDUs, at a helper (assisting, supplemental) WTRU (UE) on the downlink is disclosed, wherein PDUs stored at a logical channel queue or buffer are discarded (dropped) if a discard time set expires. Additionally, a system is claimed in which pairs of WTRU (UEs) are adapted to negotiate a cross link (direct link) scheduling per transmission time interval, TTI, within the resources specified in a cross link grant.
摘要翻译：高级拓扑（LTE）应用中的节点（UE）之间的直接通信（无线电交叉链路）。一种方法包括：第一节点（用户设备，UE），其接收指定资源的交叉链路许可，所述资源至少由所述第一节点（UE）用于所述无线电交叉链路（直接链路）上的传输。第一节点还针对在交叉链路授权中指定的资源内的每个传输时间间隔（TTI）执行交叉链路调度，并且基于每个TTI的交叉链路调度授权将至少一个分组发送到第二节点（第二UE）。在另一个实施例中，公开了适用于在下行链路上的辅助（辅助的，补充的）WTRU（UE）丢弃停滞的（存储的）RLC协议数据单元PDU的y无线发射/接收单元WTRU，其中PDU 如果丢弃时间设置过期，存储在逻辑信道队列或缓冲区中的数据将被丢弃（丢弃）。另外，要求一种系统，其中WTRU（UE）对适合于在交叉链路授权中指定的资源内协调每个传输时间间隔TTI的交叉链路（直接链路）调度。

9. 发明申请

WO2013086316A1 METHOD AND APPARATUS FOR CROSS LINK ESTABLISHMENT 审中-公开
标题翻译：交叉链路建立方法与装置
公开(公告)号：WO2013086316A1
公开(公告)日：2013-06-13
申请号：PCT/US2012/068440
申请日：2012-12-07
申请人： INTERDIGITAL PATENT HOLDINGS, INC.
发明人： RAGHOTHAMAN, Balaji , PRAGADA, Ravikumar V. , DENG, Zhuorong , DENG, Tao , STERNBERG, Gregory S. , VANGANURU, Kiran K. , SHENG, Hongsan , FERRANTE, Steven
IPC分类号： H04W88/04
CPC分类号： H04B7/15507 , H04W36/00 , H04W36/08 , H04W40/22 , H04W72/04 , H04W72/0406 , H04W76/10 , H04W76/12 , H04W76/14 , H04W76/25 , H04W76/27 , H04W88/04
摘要： A method and apparatus for cross link (XL) establishment are disclosed. In the method and apparatus, a XL between a terminal wireless transmit/receive unit (T-WTRU) and a helper WTRU (H-WTRU) is established. The T-WTRU and the H-WTRU may be configured to operate in a plurality of RRC states and a plurality of RRC substates. To establish the XL, neighbor discovery, association information exchange, and a H-WTRU selection may be performed. Radio resource control (RRC) configuration of the T-WTRU and the H-WTRU may also be performed. In the method and apparatus, coverage for a T-WTRU may be handed over between a network and a H-WTRU or between two H-WTRUs.
摘要翻译：公开了一种用于交叉（XL）建立的方法和装置。在该方法和装置中，建立终端无线发射/接收单元（T-WTRU）和辅助WTRU（H-WTRU）之间的XL。 T-WTRU和H-WTRU可以被配置为在多个RRC状态和多个RRC子状态中操作。为了建立XL，可以执行邻居发现，关联信息交换和H-WTRU选择。也可以执行T-WTRU和H-WTRU的无线电资源控制（RRC）配置。在该方法和装置中，T-WTRU的覆盖可以在网络和H-WTRU之间或两个H-WTRU之间切换。

10. 发明申请

WO2013181394A1 DEVICE-TO-DEVICE (D2D) LINK ADAPTATION 审中-公开
标题翻译：设备到设备（D2D）链路适配
公开(公告)号：WO2013181394A1
公开(公告)日：2013-12-05
申请号：PCT/US2013/043367
申请日：2013-05-30
申请人： INTERDIGITAL PATENT HOLDINGS, INC.
发明人： PELLETIER, Benoit , MARINIER, Paul , SHENG, Hongsan , VANGANURU, Kiran, K. , PANI, Diana
IPC分类号： H04W24/10 , H04W76/02
CPC分类号： H04W24/02 , H04J11/00 , H04L5/005 , H04L5/14 , H04L61/6022 , H04W24/10 , H04W28/14 , H04W72/0413 , H04W72/0453 , H04W72/085 , H04W72/1215 , H04W72/1226 , H04W76/14
摘要： Channel quality may be measured in a device-to-device (D2D) communication network. The D2D communication network may include one or snore D2.D wireless transmit/receive units (WTRUs), wherein the D2D WTRUs may communicate using a D2D bandwidth. A D2D WTRU may receive a channel measurement resource configuration corresponding to a channel measurement resource. The D2D WTRU may further receive an RS on the channel measurement resource. The D2D WTRU may measure one or more channel state parameters from the channel measurement resource for a part of bandwidth overlapping with a D2D communication bandwidth, when the RS bandwidth is greater than the D2D communication bandwidth. The D2D WTRU may report the channel state parameters to a controlling entity. The controlling entity may configure a D2D frequency allocation between a transmitting device and a receiving device. The D2D frequency allocation may be based on the time averaged measurement.
摘要翻译：信道质量可以在设备到设备（D2D）通信网络中测量。 D2D通信网络可以包括一个或嗅探D2.D无线发射/接收单元（WTRU），其中D2D WTRU可以使用D2D带宽进行通信。 D2D WTRU可以接收对应于信道测量资源的信道测量资源配置。 D2D WTRU还可以在信道测量资源上接收RS。当RS带宽大于D2D通信带宽时，D2D WTRU可以测量与D2D通信带宽重叠的一部分带宽的来自信道测量资源的一个或多个信道状态参数。 D2D WTRU可以向控制实体报告信道状态参数。控制实体可以在发送设备和接收设备之间配置D2D频率分配。 D2D频率分配可以基于时间平均测量。

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