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131. 发明申请

US20200344798A1 ENHANCED LICENSED ASSISTED ACCESS UPLINK CHANNEL ACCESS 审中-公开
公开(公告)号：US20200344798A1
公开(公告)日：2020-10-29
申请号：US16926312
申请日：2020-07-10
申请人： Srinivas Yerramalli , Tao Luo , Xiaoxia Zhang , Peter Gaal
发明人： Srinivas Yerramalli , Tao Luo , Xiaoxia Zhang , Peter Gaal
IPC分类号： H04W74/00 , H04W74/08 , H04W72/14
摘要： Solutions to problems from delays in channel acquisition by UEs in a contention-based shared radio frequency spectrum band are disclosed. For example, if an eNB knows of a recent or ongoing downlink transmission on a frequency to be used for uplink transmission by a UE, then the eNB may instruct the UE to either skip performance of LBT on that frequency or else perform a type of LBT that is shorter in duration than a full CCA. One way for the eNB to instruct the UE in this fashion is to set an indicator in an uplink grant transmitted to the UE on another frequency. Additionally, in order to avoid truncation of an uplink transmission opportunity, an eNB may notify a UE that an uplink grant is valid for more than one starting point.

132. 发明申请

US20100177653A1 METHOD AND APPARATUS FOR COMPUTING AND REPORTING CHANNEL QUALITY INDICATION (CQI) 有权
标题翻译：计算和报告信道质量指示（CQI）的方法和装置
公开(公告)号：US20100177653A1
公开(公告)日：2010-07-15
申请号：US12652605
申请日：2010-01-05
申请人： Tao Luo , Taesang Yoo , Wanshi Chen , Peter Gaal , Yongbin Wei
发明人： Tao Luo , Taesang Yoo , Wanshi Chen , Peter Gaal , Yongbin Wei
IPC分类号： H04L12/26
CPC分类号： H04W24/02 , H04L1/0026 , H04L1/06 , H04L25/03305 , H04L27/2647 , H04L2025/03426
摘要： Techniques for computing and reporting channel quality indication (CQI) are described. In an aspect, a plurality of CQI computation methods may be supported, and each CQI computation method may indicate how CQI should be computed. One CQI computation method may be selected for use. CQI may then be computed and reported in accordance with the selected CQI computation method. In an exemplary design, a user equipment (UE) may obtain a selected method for computing CQI, which may be chosen based on the UE capability and/or other factors. The selected method may specify (i) CQI computation for a specific codeword among a plurality of codewords or (ii) CQI computation by averaging signal quality across a plurality of layers used for transmission. The UE may compute CQI in accordance with the selected method, send the CQI to a base station, and receive data sent by the base station based on the CQI.
摘要翻译：描述了用于计算和报告信道质量指示（CQI）的技术。在一个方面，可以支持多个CQI计算方法，并且每个CQI计算方法可以指示如何计算CQI。可以选择一种CQI计算方法来使用。然后可以根据所选择的CQI计算方法来计算和报告CQI。在示例性设计中，用户设备（UE）可以获得用于计算CQI的所选择的方法，其可以基于UE能力和/或其他因素来选择。所选择的方法可以指定（i）针对多个码字中的特定码字的CQI计算，或者（ii）通过用于传输的多个层平均信号质量的CQI计算。 UE可以根据所选择的方法计算CQI，向基站发送CQI，并且基于CQI接收由基站发送的数据。

133. 发明授权

US09673945B2 Implicitly linking aperiodic channel state information (A-CSI) reports to CSI-reference signal (CSI-RS) resources 有权
公开(公告)号：US09673945B2
公开(公告)日：2017-06-06
申请号：US13360348
申请日：2012-01-27
申请人： Stefan Geirhofer , Tao Luo , Wanshi Chen , Peter Gaal , Hao Xu , Kapil Bhattad , Tingfang Ji
发明人： Stefan Geirhofer , Tao Luo , Wanshi Chen , Peter Gaal , Hao Xu , Kapil Bhattad , Tingfang Ji
IPC分类号： H04W4/00 , H04L1/00 , H04L5/00 , H04L1/06 , H04W24/10 , H04B7/06 , H04L12/26 , H04L12/28 , H04J3/00 , H04W72/00 , H04B7/024
CPC分类号： H04L5/0051 , H04B7/024 , H04B7/0626 , H04L1/0026 , H04L1/0687 , H04L1/0693 , H04L5/0023 , H04L5/0048 , H04W24/10 , H04W72/042 , H04W84/042
摘要： Certain aspects of the present disclosure provide techniques for implicitly linking aperiodic channel state information (A-CSI) reports to CSI-reference signal (CSI-RS) resources. In an aspect, the UE may be instructed to report on specific CSI-RS resource(s) via explicit signaling in the UE grant. Other aspects disclose techniques for implicit CSI-RS resource selection by the UE that require fewer signaling resources. Instead of explicitly signaling CSI-RS resources to the UE, the UE may implicitly select CSI-RS resource for CSI feedback reporting based on information known to the UE, e.g. a subframe on which a reporting request is received. This may reduce the impact of the additional signaling in the UE grant.

134. 发明申请

US20130028182A1 IMPLICITLY LINKING APERIODIC CHANNEL STATE INFORMATION (A-CSI) REPORTS TO CSI-REFERENCE SIGNAL (CSI-RS) RESOURCES 有权
标题翻译：将联络通道状态信息（A-CSI）与CC-RS信号（CSI-RS）资源密切联系
公开(公告)号：US20130028182A1
公开(公告)日：2013-01-31
申请号：US13360348
申请日：2012-01-27
申请人： Stefan Geirhofer , Tao Luo , Wanshi Chen , Peter Gaal , Hao Xu , Kapil Bhattad , Tingfang Ji
发明人： Stefan Geirhofer , Tao Luo , Wanshi Chen , Peter Gaal , Hao Xu , Kapil Bhattad , Tingfang Ji
IPC分类号： H04W4/00
CPC分类号： H04L5/0051 , H04B7/024 , H04B7/0626 , H04L1/0026 , H04L1/0687 , H04L1/0693 , H04L5/0023 , H04L5/0048 , H04W24/10 , H04W72/042 , H04W84/042
摘要： Certain aspects of the present disclosure provide techniques for implicitly linking aperiodic channel state information (A-CSI) reports to CSI-reference signal (CSI-RS) resources. In an aspect, the UE may be instructed to report on specific CSI-RS resource(s) via explicit signaling in the UE grant. Other aspects disclose techniques for implicit CSI-RS resource selection by the UE that require fewer signaling resources. Instead of explicitly signaling CSI-RS resources to the UE, the UE may implicitly select CSI-RS resource for CSI feedback reporting based on information known to the UE, e.g. a subframe on which a reporting request is received. This may reduce the impact of the additional signaling in the UE grant.
摘要翻译：本公开的某些方面提供了将非周期性信道状态信息（A-CSI）报告隐含地链接到CSI参考信号（CSI-RS）资源的技术。在一方面，可以指示UE通过UE授权中的显式信令来报告特定的CSI-RS资源。其他方面公开了由UE需要较少信令资源的隐性CSI-RS资源选择技术。代替将CSI-RS资源明确地发送给UE，UE可以基于UE已知的信息，例如隐含地选择用于CSI反馈报告的CSI-RS资源。接收报告请求的子帧。这可以减少UE授权中附加信令的影响。

135. 发明申请

US20120208547A1 METHOD AND APPARATUS FOR ENABLING CHANNEL AND INTERFERENCE ESTIMATIONS IN MACRO/RRH SYSTEM 有权
标题翻译：用于在MACRO / RRH系统中实现通道和干扰估计的方法和装置
公开(公告)号：US20120208547A1
公开(公告)日：2012-08-16
申请号：US13358164
申请日：2012-01-25
申请人： Stefan Geirhofer , Wanshi Chen , Tao Luo , Peter Gaal , Hao Xu
发明人： Stefan Geirhofer , Wanshi Chen , Tao Luo , Peter Gaal , Hao Xu
IPC分类号： H04W72/08
CPC分类号： H04W72/085 , H04B7/024 , H04B7/0626 , H04J11/0053 , H04L5/0032 , H04L5/0035 , H04L5/0048 , H04L5/006 , H04L5/0092 , H04L25/0226 , H04L25/0228 , H04W24/10
摘要： Aspects disclosed herein relate to channel and interference estimations in a coordinated multi-point (CoMP) environment. In the disclosed aspects, an eNB may be equipped to signal an identifier indicating a plurality of resource patterns, each associated with a resource pattern group, and each including a first resource element pattern for channel estimation and a second resource element pattern for interference estimation. The UE may be equipped to receive the signaling and perform channel estimation based at least in part on the first resource clement pattern, and interference estimation based at least in part on the second resource pattern generate at least one channel state report based on the channel and interference estimations, and transmit at least one channel state report to an eNB. The eNB may determine one or more resources for use by the UE based on the at least one received channel state report.
摘要翻译：本文公开的方面涉及协调多点（CoMP）环境中的信道和干扰估计。在所公开的方面中，eNB可以被配备为用信号通知指示多个资源模式的标识符，每个资源模式与资源模式组相关联，并且每个包括用于信道估计的第一资源元素模式和用于干扰估计的第二资源元素模式。 UE可以被配备为至少部分地基于第一资源清除模式来接收信令并执行信道估计，并且至少部分地基于第二资源模式的干扰估计基于信道生成至少一个信道状态报告，以及干扰估计，并向eNB发送至少一个信道状态报告。 eNB可以基于至少一个接收到的信道状态报告来确定UE使用的一个或多个资源。

136. 发明授权

US09559820B2 Feedback reporting based on channel state information reference signal (CSI-RS) groups 有权
标题翻译：基于信道状态信息参考信号（CSI-RS）组的反馈报告
公开(公告)号：US09559820B2
公开(公告)日：2017-01-31
申请号：US13359154
申请日：2012-01-26
申请人： Stefan Geirhofer , Tao Luo , Wanshi Chen , Peter Gaal , Hao Xu , Kapil Bhattad , Tingfang Ji
发明人： Stefan Geirhofer , Tao Luo , Wanshi Chen , Peter Gaal , Hao Xu , Kapil Bhattad , Tingfang Ji
IPC分类号： H04L12/22 , H04L5/00
CPC分类号： H04L5/0048
摘要： In macro/RRH setups, channel state information reference signals (CSI-RS) and demodulation reference signals (DM-RS) may be used to decouple control and data transmission. Data transmission (e.g. for LTE Rel 10 and beyond) may be based on CSI-RS and DM-RS, while control may be received from a different set of cells or TxPs via CRS. Certain aspects of the present disclosure introduce a reporting framework, in which configuration of data-serving cells/TxPs may be carried out based on CSI-RS. In certain aspects, a new concept of CSI-RS groups, i.e., a set of CSI-RS ports that a UE considers as one group for precoding matrix indicator (PMI)/channel quality indicator (CQI)/rank indicator (RI) reporting, may be defined.
摘要翻译：在宏/ RRH设置中，可以使用信道状态信息参考信号（CSI-RS）和解调参考信号（DM-RS）来去耦合控制和数据传输。数据传输（例如，对于LTE Rel 10及其以外）可以基于CSI-RS和DM-RS，而可以经由CRS从不同的小区集合或TxP接收控制。本公开的某些方面引入了报告框架，其中可以基于CSI-RS来执行数据服务小区/ TxP的配置。在某些方面，CSI-RS组的新概念，即UE认为一组用于预编码矩阵指示符（PMI）/信道质量指示符（CQI）/秩指示符（RI）报告）的一组CSI-RS端口，可以被定义。

137. 发明授权

US08995400B2 Method and apparatus for enabling channel and interference estimations in macro/RRH system 有权
标题翻译：在宏/ RRH系统中实现信道和干扰估计的方法和装置
公开(公告)号：US08995400B2
公开(公告)日：2015-03-31
申请号：US13358164
申请日：2012-01-25
申请人： Stefan Geirhofer , Wanshi Chen , Tao Luo , Peter Gaal , Hao Xu
发明人： Stefan Geirhofer , Wanshi Chen , Tao Luo , Peter Gaal , Hao Xu
IPC分类号： H04W24/10 , H04L5/00 , H04B7/06 , H04J11/00 , H04L25/02 , H04B7/02
CPC分类号： H04W72/085 , H04B7/024 , H04B7/0626 , H04J11/0053 , H04L5/0032 , H04L5/0035 , H04L5/0048 , H04L5/006 , H04L5/0092 , H04L25/0226 , H04L25/0228 , H04W24/10
摘要： Aspects disclosed herein relate to channel and interference estimations in a coordinated multi-point (CoMP) environment. In the disclosed aspects, an eNB may be equipped to signal an identifier indicating a plurality of resource patterns, each associated with a resource pattern group, and each including a first resource element pattern for channel estimation and a second resource element pattern for interference estimation. The UE may be equipped to receive the signaling and perform channel estimation based at least in part on the first resource element pattern, and interference estimation based at least in part on the second resource pattern generate at least one channel state report based on the channel and interference estimations, and transmit at least one channel state report to an eNB. The eNB may determine one or more resources for use by the UE based on the at least one received channel state report.
摘要翻译：本文公开的方面涉及协调多点（CoMP）环境中的信道和干扰估计。在所公开的方面中，eNB可以被配备为用信号通知指示多个资源模式的标识符，每个资源模式与资源模式组相关联，并且每个包括用于信道估计的第一资源元素模式和用于干扰估计的第二资源元素模式。 UE可以被配备为至少部分地基于第一资源元素模式来接收信令并执行信道估计，并且至少部分地基于第二资源模式的干扰估计基于信道生成至少一个信道状态报告，以及干扰估计，并向eNB发送至少一个信道状态报告。 eNB可以基于至少一个接收到的信道状态报告来确定UE使用的一个或多个资源。

138. 发明授权

US08432873B2 Method and apparatus for computing and reporting channel quality indication (CQI) 有权
标题翻译：用于计算和报告信道质量指示（CQI）的方法和装置
公开(公告)号：US08432873B2
公开(公告)日：2013-04-30
申请号：US12652605
申请日：2010-01-05
申请人： Tao Luo , Taesang Yoo , Wanshi Chen , Peter Gaal , Yongbin Wei
发明人： Tao Luo , Taesang Yoo , Wanshi Chen , Peter Gaal , Yongbin Wei
IPC分类号： H04B7/216
CPC分类号： H04W24/02 , H04L1/0026 , H04L1/06 , H04L25/03305 , H04L27/2647 , H04L2025/03426
摘要： Techniques for computing and reporting channel quality indication (CQI) are described. In an aspect, a plurality of CQI computation methods may be supported, and each CQI computation method may indicate how CQI should be computed. One CQI computation method may be selected for use. CQI may then be computed and reported in accordance with the selected CQI computation method. In an exemplary design, a user equipment (UE) may obtain a selected method for computing CQI, which may be chosen based on the UE capability and/or other factors. The selected method may specify (i) CQI computation for a specific codeword among a plurality of codewords or (ii) CQI computation by averaging signal quality across a plurality of layers used for transmission. The UE may compute CQI in accordance with the selected method, send the CQI to a base station, and receive data sent by the base station based on the CQI.
摘要翻译：描述了用于计算和报告信道质量指示（CQI）的技术。在一个方面，可以支持多个CQI计算方法，并且每个CQI计算方法可以指示如何计算CQI。可以选择一种CQI计算方法来使用。然后可以根据所选择的CQI计算方法来计算和报告CQI。在示例性设计中，用户设备（UE）可以获得用于计算CQI的所选择的方法，其可以基于UE能力和/或其他因素来选择。所选择的方法可以指定（i）针对多个码字中的特定码字的CQI计算，或者（ii）通过用于传输的多个层平均信号质量的CQI计算。 UE可以根据所选择的方法计算CQI，向基站发送CQI，并且基于CQI接收由基站发送的数据。

139. 发明申请

US20130021926A1 FEEDBACK REPORTING BASED ON CHANNEL STATE INFORMATION REFERENCE SIGNAL (CSI-RS) GROUPS 有权
标题翻译：基于信道状态信息参考信号（CSI-RS）组的反馈报告
公开(公告)号：US20130021926A1
公开(公告)日：2013-01-24
申请号：US13359154
申请日：2012-01-26
申请人： Stefan Geirhofer , Tao Luo , Wanshi Chen , Peter Gaal , Hao Xu , Kapil Bhattad , Tingfang Ji
发明人： Stefan Geirhofer , Tao Luo , Wanshi Chen , Peter Gaal , Hao Xu , Kapil Bhattad , Tingfang Ji
IPC分类号： H04W24/00 , H04W4/00
CPC分类号： H04L5/0048
摘要： In macro/RRH setups, channel state information reference signals (CSI-RS) and demodulation reference signals (DM-RS) may be used to decouple control and data transmission. Data transmission (e.g. for LTE Rel 10 and beyond) may be based on CSI-RS and DM-RS, while control may be received from a different set of cells or TxPs via CRS. Certain aspects of the present disclosure introduce a reporting framework, in which configuration of data-serving cells/TxPs may be carried out based on CSI-RS. In certain aspects, a new concept of CSI-RS groups, i.e., a set of CSI-RS ports that a UE considers as one group for precoding matrix indicator (PMI)/channel quality indicator (CQI)/rank indicator (RI) reporting, may be defined.
摘要翻译：在宏/ RRH设置中，可以使用信道状态信息参考信号（CSI-RS）和解调参考信号（DM-RS）来去耦合控制和数据传输。数据传输（例如，对于LTE Rel 10及其以外）可以基于CSI-RS和DM-RS，而可以经由CRS从不同的小区或TxP接收控制。本公开的某些方面引入了报告框架，其中可以基于CSI-RS来执行数据服务小区/ TxP的配置。在某些方面，CSI-RS组的新概念，即UE认为一组用于预编码矩阵指示符（PMI）/信道质量指示符（CQI）/秩指示符（RI）报告）的一组CSI-RS端口，可以被定义。

140. 发明授权

US08913672B2 Efficiently identifying system waveform in uplink transmission 有权
标题翻译：有效识别上行传输中的系统波形
公开(公告)号：US08913672B2
公开(公告)日：2014-12-16
申请号：US12557437
申请日：2009-09-10
申请人： Tao Luo , Juan Montojo , I-Hsiang Wang
发明人： Tao Luo , Juan Montojo , I-Hsiang Wang
IPC分类号： H04K1/10 , H04L27/28 , H04L1/00
CPC分类号： H04L5/0048 , H04L1/0015 , H04L1/0025 , H04L1/0028 , H04L1/0039 , H04L5/0051 , H04L27/2636 , H04W72/02 , H04W72/0413
摘要： Systems and methodologies are described that facilitate indicating a type of waveform utilized for uplink transmission in a wireless communication environment. An access terminal can select a type of waveform from a set of possible waveform types. Moreover, a reference signal can be generated based upon the selected type of waveform. For instance, a sequence employed to yield the reference signal can be generated and/or chosen as a function of the selected type of waveform. According to another illustration, a tone location and/or a symbol location of the reference signal can be based upon the selected type of waveform. Further, the reference signal can be sent as part of the uplink transmission to the base station from the access terminal. The base station can detect the selected type of waveform utilized by the access terminal for the uplink transmission based upon parameter(s) recognized from the reference signal.
摘要翻译：描述了有助于指示在无线通信环境中用于上行链路传输的波形类型的系统和方法。接入终端可以从一组可能的波形类型中选择一种类型的波形。此外，可以基于所选择的波形类型来生成参考信号。例如，可以根据所选择的波形类型生成和/或选择用于产生参考信号的序列。根据另一示例，参考信号的音调位置和/或符号位置可以基于所选择的波形类型。此外，参考信号可以作为上行链路传输的一部分从接入终端发送到基站。基站可以基于从参考信号识别的参数来检测由接入终端用于上行链路传输的选择类型的波形。

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