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1. 发明申请

WO2021171167A1 TIMING ERROR ESTIMATION/COMPENSATION FOR 5G NR DOWNLINK SYSTEMS WITH UNCALIBRATED ANTENNAS 审中-公开
公开(公告)号：WO2021171167A1
公开(公告)日：2021-09-02
申请号：PCT/IB2021/051490
申请日：2021-02-22
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： LONG, Jianguo , LI, Shaohua , QIANG, Yongquan
IPC分类号： H04B7/0456 , H04B7/06 , H04B17/12
摘要： A method and network node for timing error estimation and compensation for Fifth Generation (5G) New Radio (NR) downlink (DL) systems with uncalibrated antennas are provided. According to one aspect, a method in a network node includes transmitting a first Channel State Information Reference Signal (CSI-RS) having a first timing compensation and transmitting a second CSI-RS having a second timing compensation, receiving a CSI-RS resource indicator (CRI) in a CSI report from a wireless device (WD), and determining from the CRI which of the first and second timing compensation results in a greater spectrum efficiency.

2. 发明申请

WO2021117010A1 AIDED ANTENNA CALIBRATION FOR SHARED RADIO SYSTEMS 审中-公开
公开(公告)号：WO2021117010A1
公开(公告)日：2021-06-17
申请号：PCT/IB2020/061854
申请日：2020-12-11
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： LI, Shaohua , LONG, Jianguo
IPC分类号： H04B7/06 , H04B17/12
摘要： A method, network node and wireless device (WD) for New Radio (NR)-WD antenna calibration for Long Term Evolution (LTE)-NR radio-shared systems are disclosed. According to one aspect, a method in a network node configured to communicate with first wireless devices according to a first radio access technology and to communicate with second wireless devices according to a second radio access technology is provided. The method includes determining a delay and phase error at a first processing block based at least in part on feedback from at least one of the first wireless devices. The method also includes compensating a first transmitted signal based at least in part on the determined delay and phase error. The method further includes compensating at a second processing block a second transmitted signal based at least in part on the determined delay and phase error received from the first processing block.

3. 发明申请

WO2020260933A1 CHANNEL QUALITY INDICATOR (CQI) REPORTING WITH CQI HEADROOM 审中-公开
公开(公告)号：WO2020260933A1
公开(公告)日：2020-12-30
申请号：PCT/IB2019/055523
申请日：2019-06-28
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： QIANG, Yongquan , GUO, Shiguang , LONG, Jianguo , REN, Hong
IPC分类号： H04B7/06 , H04L1/00
摘要： According to one or more embodiments, a wireless device (22) configured to report one of a plurality of predefined Channel Quality Indicator (CQI) values is provided. A maximum CQI value of the plurality of predefined CQI values corresponds to any one of a plurality of signal characteristic values greater than or equal to a threshold signal characteristic value. The wireless device (22) includes processing circuitry (84) configured to determine a first signal characteristic value associated with a received signal. The processing circuitry (84) is further configured to if the first signal characteristic value is greater than or equal to the threshold signal characteristic value associated with the maximum CQI value, generate a CQI report indicating: the maximum CQI value, and a power backoff from the first signal characteristic value that results in the threshold signal characteristic value.

4. 发明申请

WO2016132173A1 MIMO RANK REDUCTION TO IMPROVE DOWNLINK THROUGHPUT 审中-公开
标题翻译： MIMO RANK减少以改善下行链路吞吐量
公开(公告)号：WO2016132173A1
公开(公告)日：2016-08-25
申请号：PCT/IB2015/051139
申请日：2015-02-16
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： WENG, James Jianfeng , XU, Hua , CHEN, Xixian , LONG, Jianguo , LU, Guoqiang , ROGER, Michael , SHAO, Ying , CHAUVIN, Michel
IPC分类号： H04L1/00 , H04L1/06 , H04L1/18 , H04B7/04
CPC分类号： H04B7/0482 , H04B7/0486 , H04L1/0026 , H04L1/0033 , H04L1/06 , H04L1/1867
摘要： Systems and methods for Multiple-Input and Multiple-Output (MIMO) rank reduction to improve downlink throughput are disclosed. A method of operation of a radio access node includes determining that an imbalance between parallel channels of a spatial multiplexing downlink transmission to a wireless device is greater than an imbalance threshold and/or that a Negative Acknowledgement (NACK) rate over time for the parallel channels of a spatial multiplexing downlink transmission reported by the wireless device is greater than a NACK rate threshold. The method also includes, in response to determining that the imbalance between the parallel channels is greater than the imbalance threshold and/or that the NACK rate is greater than the NACK rate threshold, performing a fast rank reduction for a next downlink transmission whereby a rank is reduced from a rank indicator reported by the wireless device to some lower rank. Reducing the rank may improve downlink throughput.
摘要翻译：公开了用于多输入和多输出（MIMO）秩降级以改善下行链路吞吐量的系统和方法。一种无线电接入节点的操作方法包括确定对于无线设备的空间多路复用下行链路传输的并行信道之间的不平衡大于不平衡阈值和/或并行信道随时间推移的否定确认（NACK）速率由无线设备报告的空间多路复用下行链路传输大于NACK速率阈值。该方法还包括响应于确定并行信道之间的不平衡大于不平衡阈值和/或NACK速率大于NACK速率阈值，对下一个下行链路传输执行快速降级，由此排列从无线设备报告的等级指标降低到一些较低的等级。降低等级可以提高下行链路吞吐量。

5. 发明申请

WO2021009552A1 CQI SATURATION MITIGATION IN MASSIVE MU-MIMO SYSTEMS 审中-公开
公开(公告)号：WO2021009552A1
公开(公告)日：2021-01-21
申请号：PCT/IB2019/056178
申请日：2019-07-18
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： LONG, Jianguo , LI, Shaohua
IPC分类号： H04L1/00 , H04B7/0417 , H04B7/06
摘要： Methods and systems for mitigating channel quality indication (CQI) saturation in a channel state information (CSI) report received from a wireless device (WD) are disclosed. In one or more embodiments, a WD is provided. The WD includes processing circuitry configured to mitigate channel quality indication (CQI) saturation in a CSI report to a network node by at least in part receiving configuration information comprising any one or more of: a power offset value, a number of channel state information reference signal, CSI-RS, ports, and a rank restriction. The WD then generates the CSI report such that the CSI report comprises a CQI value based at least in part on the received configuration information and optionally causes transmission of the CSI report.

6. 发明申请

WO2020049349A1 PORT TO ANTENNA MAPPING DESIGN IN VIRTUALIZED ACTIVE ANTENNA SYSTEM (AAS) 审中-公开
公开(公告)号：WO2020049349A1
公开(公告)日：2020-03-12
申请号：PCT/IB2018/056855
申请日：2018-09-07
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： QIANG, Yongquan , GUO, Shiguang , LONG, Jianguo , REN, Hong
IPC分类号： H04B7/00 , H04B7/0456
摘要： Apparatuses and methods for port-to-antenna mapping in a virtualized Active Antenna System (AAS) are provided. In one embodiment, a method for a radio node includes determining a source codebook associated with at least one antenna port; determining a target codebook associated with at least one physical antenna; and determining a port-to-antenna mapping matrix based at least in part on the determined source codebook and the determined target codebook.

7. 发明申请

WO2018138555A1 HARQ FEEDBACK MODE DETERMINATION FOR DOWNLINK TRANSMISSION 审中-公开
公开(公告)号：WO2018138555A1
公开(公告)日：2018-08-02
申请号：PCT/IB2017/050846
申请日：2017-02-15
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： CHEN, Xixian , BIN SEDIQ, Akram , GEORGE, Mercy , LIE CHIN CHEONG, Patrick , LONG, Jianguo , QIANG, Yongquan
IPC分类号： H04L1/18
摘要： Systems and methods related to optimized selection, or determination of, Hybrid Automatic Repeat Request (HARQ) feedback modes for downlink transmissions by considering Time Division Duplexing (TDD) uplink/downlink (UL/DL) configuration, transmission mode, cell load, and/or traffic type are disclosed. In this manner, performance can be improved.

8. 发明申请

WO2017212312A1 OUTER-LOOP ADJUSTMENT FOR LINK ADAPTATION 审中-公开
标题翻译：外环调整链接适应
公开(公告)号：WO2017212312A1
公开(公告)日：2017-12-14
申请号：PCT/IB2016/053338
申请日：2016-06-07
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： CHEN, Xixian , BONTU, Chandra Sekhar , LONG, Jianguo , WENG, James Jinfeng
IPC分类号： H04L1/00 , H04B7/0413 , H04B17/336
摘要： A method and system for performing link adaptation are disclosed. According to one aspect, a method in a wireless communication system for performing link adaptation is provided. The method includes, when a first measure of channel quality is higher than a first predetermined amount, using a first outer loop adjustment process directed to determining link adaptation for a first data transmission transmitted to a wireless device. The method also includes, when the first measure of channel quality is lower than a second predetermined amount, using a second outer loop adjustment process different from the first outer loop adjustment process directed to determining link adaptation for a second data transmission transmitted to the wireless device.
摘要翻译：公开了一种用于执行链路自适应的方法和系统。根据一个方面，提供了一种用于执行链路自适应的无线通信系统中的方法。该方法包括，当信道质量的第一测量值高于第一预定量时，使用第一外部环路调整过程，该第一外部环路调整过程用于确定发送到无线设备的第一数据传输的链路自适应。该方法还包括，当信道质量的第一测量值低于第二预定量时，使用不同于第一外环调整过程的第二外环调整过程，该第二外环调整过程旨在确定发送给无线设备的第二数据传输的链路自适应

9. 发明申请

WO2017025777A1 CLUSTER-SPECIFIC REFERENCE SIGNAL CONFIGURATION FOR CELL COORDINATION 审中-公开
标题翻译：用于细胞协调的集群特定参考信号配置
公开(公告)号：WO2017025777A1
公开(公告)日：2017-02-16
申请号：PCT/IB2015/056125
申请日：2015-08-11
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： BONTU, Chandra Sekhar , FANTAYE, Girum Alebachew , GEORGE, Mercy , LONG, Jianguo , XU, Hua
IPC分类号： H04L5/00
CPC分类号： H04L5/0035 , H04L5/0044 , H04L5/0057
摘要： A node for managing cell coordination is provided. The node includes processing circuitry including a processor, and a memory. The memory contains instructions that, when executed by the processor, configure the processor to determine a cluster of a plurality of cells including a first cell, the cluster of the plurality of cells having a plurality of antennas and determine a channel state information reference signal, CSI-RS, configuration corresponding to a total number of the plurality of antennas. The memory further includes instructions that, when executed by the processor, configure the processor to partition radio resources corresponding to the CSI-RS configuration into a plurality of partitioned radio resources, and cause the first cell to transmit at least one CSI-RS signal according to a first partition of the plurality of partitioned radio resources while muting the radio resources of the remaining plurality of partitioned resources.
摘要翻译：提供了用于管理小区协调的节点。该节点包括包括处理器和存储器的处理电路。存储器包含指令，当由处理器执行时，配置处理器以确定包括第一单元的多个单元的簇，所述多个单元的簇具有多个天线并确定信道状态信息参考信号， CSI-RS，对应于多个天线的总数的配置。所述存储器还包括指令，当所述处理器执行时，所述指令将所述处理器配置为将与所述CSI-RS配置相对应的无线资源划分为多个分区无线电资源，并使所述第一小区根据所述第一小区发送至少一个CSI-RS信号分配给多个分割无线资源的第一分区，同时使剩余的多个分区资源的无线电资源静音。

10. 发明申请

WO2022043731A1 UE AIDED ANTENNA CALIBRATION 审中-公开
公开(公告)号：WO2022043731A1
公开(公告)日：2022-03-03
申请号：PCT/IB2020/057913
申请日：2020-08-24
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： LI, Shaohua , LONG, Jianguo
IPC分类号： H04B7/06 , H04B17/12 , H04B17/14
摘要： Embodiments of the present disclosure provide methods and apparatuses for base station antenna calibration. A method is implemented in a base station (402) for a cellular communications system (400), The method includes configuring (500; 800) a user equipment, UE, (412) for a plurality of channel state information, CSI, reports associated to a respective plurality of CSI reporting bands, the respective plurality of CSI reporting bands being either: (a) different subsets of a plurality of sub-bands within a downlink bandwidth of the base station (402) or (b) different downlink bandwidth parts served by the base station (402); receiving (504; 804)the plurality of CSI reports from the UE (412); estimating (506; 806) phase and delay errors for a plurality of transmit antenna branches of the base station (402); compensating (508; 808) for the estimated phase and delay errors for the plurality of transmit antenna branches of the base station (402) based on the plurality of CSI reports received from the UE (412); and transmitting (510; 810) a downlink signal while compensating (508) for the estimated phase and delay errors for the plurality of transmit antenna branches of the base station (402).

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