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公开(公告)号：US09960938B2
公开(公告)日：2018-05-01
申请号：US15615583
申请日：2017-06-06
Applicant: QUALCOMM Incorporated
Inventor： Lu Zhao , Juan Montojo , Christian Pietsch
CPC classification number: H04L27/0006 , H04L5/0048 , H04L27/2607 , H04L27/2613 , H04L27/2636
Abstract: Methods, systems, and devices are described for generating a hybrid waveform for data transmission between a transmitting device and a receiving device. The transmitting device may employ an OFDM processing technique to periodically transmit known first pilot symbols mapped from a signal constellation where each signal has equal energy during a first time period and a cyclic prefix based single-carrier (CP-SC) processing technique to transmit data packets and second known pilot symbols during a second time period. Channel estimation is based on first pilot symbols, which are inserted into all subcarriers of OFDM symbol blocks within a specific period. Channel estimation tracking is based on the second pilot symbols interleaved within data packets. The receiving device may be configured to estimate CSI based in part on first pilot symbols and to track the channel estimation based in part on the second pilot symbols in order to provide reliable data detection.
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公开(公告)号：US09686108B2
公开(公告)日：2017-06-20
申请号：US15233304
申请日：2016-08-10
Applicant: QUALCOMM Incorporated
Inventor： Lu Zhao , Juan Montojo , Christian Pietsch
CPC classification number: H04L27/0006 , H04L5/0048 , H04L27/2607 , H04L27/2613 , H04L27/2636
Abstract: Methods, systems, and devices are described for generating a hybrid waveform for data transmission between a transmitting device and a receiving device. The transmitting device may employ an OFDM processing technique to periodically transmit known first pilot symbols mapped from a signal constellation where each signal has equal energy during a first time period and a cyclic prefix based single-carrier (CP-SC) processing technique to transmit data packets and second known pilot symbols during a second time period. Channel estimation is based on first pilot symbols, which are inserted into all subcarriers of OFDM symbol blocks within a specific period. Channel estimation tracking is based on the second pilot symbols interleaved within data packets. The receiving device may be configured to estimate CSI based in part on first pilot symbols and to track the channel estimation based in part on the second pilot symbols in order to provide reliable data detection.
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公开(公告)号：US09628214B2
公开(公告)日：2017-04-18
申请号：US13664158
申请日：2012-10-30
Applicant: QUALCOMM Incorporated
Inventor： Tao Luo , Taesang Yoo , Lu Zhao , Yongbin Wei , Durga Prasad Malladi
IPC: H04J11/00
CPC classification number: H04J11/005 , H04J2211/001
Abstract: The following is directed to control and data channel interference cancellation between a serving cell and interfering cell. A first symbol of a subframe is processed to determine a control span of a serving cell and a control span of an interfering cell. The interference is then cancelled based on the determined control spans.
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4.发明申请公开(公告)号：US20140153672A1
公开(公告)日：2014-06-05
申请号：US13946706
申请日：2013-07-19
Applicant: QUALCOMM Incorporated
Inventor： Lu Zhao , Stefan Brueck , Stephan Schlupkothen , Muhammad Awais Amin , Juan Montojo , Marc W. Werner , Hendrik Schoeneich
IPC: H04L27/06
CPC classification number: H04L27/06 , H04L1/0036 , H04L1/005 , H04L1/0057 , H04L27/3416
Abstract: A receiver circuit, including a multi-stage QAM de-mapper, for receiving a QAM data signal is disclosed. A first de-mapper circuit recovers a set of encoded data bits from the QAM data signal by calculating a plurality of distances between a received QAM symbol and each of a plurality of possible constellation points. A second de-mapper circuit then generates a set of unencoded data bits for the received QAM symbol based, at least in part, on the plurality of distances calculated by the first de-mapper circuit. The receiver circuit may further include a decoder circuit to decode the set of encoded data bits recovered by the first de-mapper circuit. The second de-mapper circuit may identify a subset of the plurality of possible constellation points based on a result of the decoding and select a constellation point that is associated with the shortest distance of the plurality of distances.
Abstract translation: 公开了一种用于接收QAM数据信号的包括多级QAM解映射器的接收机电路。 第一解映射器电路通过计算接收的QAM符号和多个可能的星座点中的每一个之间的多个距离，从QAM数据信号中恢复一组编码数据位。 然后，第二解映射器电路至少部分地基于由第一解映射器电路计算的多个距离来生成用于所接收的QAM符号的一组未编码数据位。 接收器电路还可以包括解码器电路，以对由第一解映射器电路恢复的编码数据位组进行解码。 第二解映射器电路可以基于解码的结果来识别多个可能的星座点的子集，并且选择与多个距离中的最短距离相关联的星座点。
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公开(公告)号：US20170339697A1
公开(公告)日：2017-11-23
申请号：US15591374
申请日：2017-05-10
Applicant: QUALCOMM Incorporated
Inventor： Seyong PARK , Jing Jiang , Hao Xu , Lu Zhao , Alexandros Manolakos , June Namgoong , Wei Zeng , Huang Lou
CPC classification number: H04W72/0453 , H04L5/0007 , H04L5/0044 , H04L25/03821 , H04L27/2602 , H04W16/14
Abstract: Aspects of the present disclosure describe a guard band signal for communication on a guard band between a first frequency band utilized by a first radio access technology having a first sub-carrier spacing and a second frequency band utilized by a second radio access technology having a second sub-carrier spacing that is a multiple of the first sub-carrier spacing. The guard band signal includes a symbol that is repeated a number of times equal to the multiple. The guard band signal may be generated and transmitted by a transmitting device. The guard band signal may be received and decoded by a receiving device. The guard band signal is interpretable according to a first numerology of the first radio access technology and according to a second numerology of the second radio access technology.
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Patent Agency Ranking
6.发明授权Hybrid waveform design combining OFDM and cyclic prefix based single carrier for millimeter-wave wireless communication 有权混合波形设计结合OFDM和基于循环前缀的单载波进行毫米波无线通信公开(公告)号：US09444595B2
公开(公告)日：2016-09-13
申请号：US14242609
申请日：2014-04-01
Applicant: QUALCOMM Incorporated
Inventor： Lu Zhao , Juan Montojo , Christian Pietsch
CPC classification number: H04L27/0006 , H04L5/0048 , H04L27/2607 , H04L27/2613 , H04L27/2636
Abstract: Methods, systems, and devices are described for generating a hybrid waveform for data transmission between a transmitting device and a receiving device. The transmitting device may employ an OFDM processing technique to periodically transmit known first pilot symbols mapped from a signal constellation where each signal has equal energy during a first time period and a cyclic prefix based single-carrier (CP-SC) processing technique to transmit data packets and second known pilot symbols during a second time period. Channel estimation is based on first pilot symbols, which are inserted into all subcarriers of OFDM symbol blocks within a specific period. Channel estimation tracking is based on the second pilot symbols interleaved within data packets. The receiving device may be configured to estimate CSI based in part on first pilot symbols and to track the channel estimation based in part on the second pilot symbols in order to provide reliable data detection.
Abstract translation: 描述了用于生成用于发送设备和接收设备之间的数据传输的混合波形的方法，系统和设备。 发送设备可以采用OFDM处理技术来周期性地发送从信号星座映射的已知的第一导频符号，其中每个信号在第一时间段期间具有相等的能量，并且基于循环前缀的单载波（CP-SC）处理技术来发送数据 分组和第二已知导频符号。 信道估计基于第一导频符号，其被插入到特定时段内的OFDM符号块的所有子载波中。 信道估计跟踪基于在数据分组内交错的第二导频符号。 接收设备可以被配置为部分地基于第一导频符号来估计CSI，并且部分地基于第二导频符号来跟踪信道估计，以便提供可靠的数据检测。
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公开(公告)号：US09425915B2
公开(公告)日：2016-08-23
申请号：US14248076
申请日：2014-04-08
Applicant: QUALCOMM Incorporated
Inventor： Taesang Yoo , Tao Luo , Lu Zhao
CPC classification number: H04L27/2691 , H04B15/00 , H04B17/345 , H04J3/10 , H04J11/0056 , H04L5/0048 , H04L5/005 , H04L5/0051 , H04L5/0062 , H04L5/0073 , H04L25/0204 , H04L25/0224 , H04L27/2695 , H04W16/32 , H04W24/10
Abstract: A method to enhance coverage and/or throughput in a heterogeneous wireless network includes detecting interference between a neighboring cell and a serving cell. The method also includes cancelling the interference using an adaptive technique based on whether the interference has colliding Common Reference Signal (CRS) tones or whether the interference has colliding Dedicated Reference Signal (DRS) tones.
Abstract translation: 增强异构无线网络中的覆盖和/或吞吐量的方法包括检测相邻小区与服务小区之间的干扰。 该方法还包括基于干扰是否具有冲突的公共参考信号（CRS）音调或者干扰是否具有冲突的专用参考信号（DRS）音调的自适应技术来消除干扰。
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8.发明授权Hybrid approach for physical downlink shared channel (PDSCH) interference cancellation 有权物理下行链路共享信道（PDSCH）干扰消除的混合方法公开(公告)号：US09100231B2
公开(公告)日：2015-08-04
申请号：US13666325
申请日：2012-11-01
Applicant: QUALCOMM Incorporated
Inventor： Taesang Yoo , Tao Luo , Hendrik Schoeneich , Myriam Rajih , Lu Zhao
CPC classification number: H04L25/0328 , H04J11/0056 , H04L1/0048 , H04L25/03305
Abstract: Certain aspects of the present disclosure relate to a hybrid approach for Physical Downlink Shared Channel (PDSCH) Interference Cancellation (IC). In certain aspects, if the PDSCH information is known for a serving cell but not be known for interfering cell(s), a hybrid approach that involves using Codeword-level IC (CWIC) for the serving cell and using Symbol-level IC (SLIC) for the interfering cells may be used for better IC performance. The hybrid IC approach may start with a UE attempting to decode the serving cell PDSCH. If the decode is unsuccessful, the UE may perform CWIC for the serving cell followed by SLIC using the results of the CWIC stage. After the SLIC stage, the UE may attempt to decode the serving cell PDSCH again. The UE may perform multiple operations of this method until the serving cell PDSCH is successfully decoded or a maximum number of iterations is reached.
Abstract translation: 本公开的某些方面涉及物理下行链路共享信道（PDSCH）干扰消除（IC）的混合方法。 在某些方面，如果PDSCH信息对于服务小区而言是已知的，但对于干扰小区而言是不知道的，则涉及使用码流级IC（CWIC）用于服务小区并使用符号级IC（SLIC ）可用于更好的IC性能。 混合IC方法可以从尝试对服务小区PDSCH进行解码的UE开始。 如果解码不成功，则UE可以使用CWIC级的结果为服务小区后跟SLIC执行CWIC。 在SLIC阶段之后，UE可以尝试再次对服务小区PDSCH进行解码。 UE可以执行该方法的多个操作，直到服务小区PDSCH成功解码或达到最大次数。
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9.发明授权Enhanced decoding and demapping method and apparatus for QAM data signals 有权用于QAM数据信号的增强解码和解映射方法和装置公开(公告)号：US09106470B2
公开(公告)日：2015-08-11
申请号：US13946706
申请日：2013-07-19
Applicant: QUALCOMM Incorporated
Inventor： Lu Zhao , Stefan Brueck , Stephan Schlupkothen , Muhammad Awais Amin , Juan Montojo , Marc W. Werner , Hendrik Schoeneich
CPC classification number: H04L27/06 , H04L1/0036 , H04L1/005 , H04L1/0057 , H04L27/3416
Abstract: A receiver circuit, including a multi-stage QAM de-mapper, for receiving a QAM data signal is disclosed. A first de-mapper circuit recovers a set of encoded data bits from the QAM data signal by calculating a plurality of distances between a received QAM symbol and each of a plurality of possible constellation points. A second de-mapper circuit then generates a set of unencoded data bits for the received QAM symbol based, at least in part, on the plurality of distances calculated by the first de-mapper circuit. The receiver circuit may further include a decoder circuit to decode the set of encoded data bits recovered by the first de-mapper circuit. The second de-mapper circuit may identify a subset of the plurality of possible constellation points based on a result of the decoding and select a constellation point that is associated with the shortest distance of the plurality of distances.
Abstract translation: 公开了一种用于接收QAM数据信号的包括多级QAM解映射器的接收机电路。 第一解映射器电路通过计算接收的QAM符号和多个可能的星座点中的每一个之间的多个距离，从QAM数据信号中恢复一组编码数据位。 然后，第二解映射器电路至少部分地基于由第一解映射器电路计算的多个距离来生成用于所接收的QAM符号的一组未编码数据位。 接收器电路还可以包括解码器电路，以对由第一解映射器电路恢复的编码数据位组进行解码。 第二解映射器电路可以基于解码的结果来识别多个可能的星座点的子集，并且选择与多个距离中的最短距离相关联的星座点。
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公开(公告)号：US20170272286A1
公开(公告)日：2017-09-21
申请号：US15615583
申请日：2017-06-06
Applicant: QUALCOMM Incorporated
Inventor： Lu Zhao , Juan Montojo , Christian Pietsch
CPC classification number: H04L27/0006 , H04L5/0048 , H04L27/2607 , H04L27/2613 , H04L27/2636
Abstract: Methods, systems, and devices are described for generating a hybrid waveform for data transmission between a transmitting device and a receiving device. The transmitting device may employ an OFDM processing technique to periodically transmit known first pilot symbols mapped from a signal constellation where each signal has equal energy during a first time period and a cyclic prefix based single-carrier (CP-SC) processing technique to transmit data packets and second known pilot symbols during a second time period. Channel estimation is based on first pilot symbols, which are inserted into all subcarriers of OFDM symbol blocks within a specific period. Channel estimation tracking is based on the second pilot symbols interleaved within data packets. The receiving device may be configured to estimate CSI based in part on first pilot symbols and to track the channel estimation based in part on the second pilot symbols in order to provide reliable data detection.
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