公开(公告)号：US20210050966A1

公开(公告)日：2021-02-18

申请号：US16991061

申请日：2020-08-12

Applicant: Jin LIU ,  Keying WU ,  Xiaobo ZHANG

Inventor： Jin LIU ,  Keying WU ,  Xiaobo ZHANG

IPC: H04L5/00 ,  H04L1/00 ,  H04W72/04

Abstract: The present disclosure discloses a method and a device in a node for wireless communication. The first node transmits first information; receives second information; transmits a first bit-block set on a first time-frequency-resource block; transmits or drops transmission of a third bit-block set on a third time-frequency-resource block; and receives a second signal on a fourth time-frequency-resource block; the first information is used for indicating that the fourth time-frequency-resource block is associated with the third time-frequency-resource block; the second information indicates that the fourth time-frequency-resource block is associated with the first time-frequency-resource block; the second signal is used for indicating whether a target bit-block set is correctly received; when the first node transmits the third bit-block set on the third time-frequency-resource block, the target bit-block set is the third bit-block set, otherwise the target bit-block set is the first bit-block set.

公开(公告)号：US20200351922A1

公开(公告)日：2020-11-05

申请号：US16932817

申请日：2020-07-19

Applicant: Keying WU ,  Xiaobo ZHANG

Inventor： Keying WU ,  Xiaobo ZHANG

IPC: H04W72/12 ,  H04B7/0456 ,  H04W72/04

Abstract: The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. The UE receives first information, receives a first signaling and transmits a first radio signal. The first information is used for determining a first air interface resource and a second air interface resource, and the first signaling includes scheduling information of the first radio signal; in instances in which the first radio signal is related to the first air interface resource, the scheduling information of the first radio signal is codebook-based; in instances in which the first radio signal is related to the second air interface resource, the scheduling information of the first radio signal is non-codebook-based. The above method has following benefits: when multiple TRPs serve one UE simultaneously, each TRP can select an optimal precoding mode depending on its own actual condition.

公开(公告)号：US20200304188A1

公开(公告)日：2020-09-24

申请号：US16896215

申请日：2020-06-09

Applicant: Keying WU ,  Xiaobo ZHANG

Inventor： Keying WU ,  Xiaobo ZHANG

IPC: H04B7/06 ,  H04W24/02 ,  H04W16/14 ,  H04W74/08 ,  H04W72/12

Abstract: The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. A first node receives T first-type radio signals, and transmits T second-type radio signals in T time windows respectively; and the first node performs Q time(s) of energy detection(s) in Q time subpool(s) on a first frequency subband respectively to obtain Q detection value(s). The T second-type radio signals are one-to-one corresponding to the T first-type radio signals; only T1 first-type radio signal(s) among the T first-type radio signals is(are) used for determining the Q; the T is a positive integer greater than 1, the Q is a positive integer, and the T1 is a positive integer less than the T; the T1 first-type radio signal(s) consist(s) of all of the first-type radio signals among the T first-type radio signals that are associated to a first antenna port set.

公开(公告)号：US20200221438A1

公开(公告)日：2020-07-09

申请号：US16826329

申请日：2020-03-23

Applicant: KeYing WU ,  XiaoBo ZHANG

Inventor： KeYing WU ,  XiaoBo ZHANG

IPC: H04W72/04 ,  H04W74/08 ,  H04W16/14

Abstract: The present disclosure provides a method and a device in a User Equipment (UE) and a base station used for wireless communication. The UE receives a first signaling, the first signaling being used for determining M time-frequency resources on a first frequency subband, the M time-frequency resources on the first frequency subband being reserved to a first radio signal, and the M being a positive integer; then, the UE determines that the first radio signal can be transmitted in only M1 time-frequency resource(s) among the M time-frequency resources on the first frequency subband, the M1 being a positive integer not greater than the M, and then transmits the first radio signal in the M1 time-frequency resource(s) on the first frequency subband; wherein the first radio signal carries a first bit block, and a number of bits contained in the first bit block is related to the M1.

公开(公告)号：US20190386858A1

公开(公告)日：2019-12-19

申请号：US16438482

申请日：2019-06-12

Applicant: KeYing WU ,  XiaoBo ZHANG ,  Lin YANG

Inventor： KeYing WU ,  XiaoBo ZHANG ,  Lin YANG

IPC: H04L25/03 ,  H04L5/00 ,  H04L27/26 ,  H04L1/18 ,  H04L1/00

Abstract: A method and a device in a UE and a base station for wireless communication are provided. A first node performs a first channel coding and transmits a first radio signal. First channel coding is based on a polar code, an input of which comprises a first information bit block and a first check bit block corresponded to an information bit block comprising the first information bit block, and an output of which generates first radio signal and related to a second bit block, values of bits comprised in the second bit block are related to a correlation parameter group comprising at least one of a time-frequency resource occupied by first radio signal, a number of bits comprised in first information bit block, or a first scrambling sequence. First scrambling sequence generates the first check bit block. The method improves precision of error check without increasing CRC length.

公开(公告)号：US20190306743A1

公开(公告)日：2019-10-03

申请号：US16372425

申请日：2019-04-02

Applicant: KeYing WU ,  XiaoBo ZHANG

Inventor： KeYing WU ,  XiaoBo ZHANG

IPC: H04W28/02 ,  H04W28/20

Abstract: The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. The UE receives first information, listens in a first frequency subband, and transmits a first radio signal in the first frequency subband starting from a first time-position. The first time-position is in a first time window, and the act of listening is used for determining the first time-position; the first time-position is one of L candidate time-position(s) in the first time window; the first information and a time domain position of the first time window are used together for determining at least one of the L and the L candidate time-position(s) in the first time window; and the L is a positive integer. The disclosure improves the utilization of radio resources in Autonomous UpLink (AUL) transmission, avoids interferences between UEs, and guarantees the fairness of channel occupancy between different UEs.

公开(公告)号：US09379800B2

公开(公告)日：2016-06-28

申请号：US13380338

申请日：2009-06-23

Applicant: Dong Li ,  Keying Wu

Inventor： Dong Li ,  Keying Wu

IPC: H04B7/06 ,  H04B7/02 ,  H04L5/00

CPC classification number: H04B7/0626 ,  H04B7/024 ,  H04L5/0035

Abstract: Embodiments of the present invention provide a method and apparatus for channel state information feedback. The method comprises: estimating channel state information from the mobile terminal to a serving cell and neighboring cells according to channel state information reference signals (CSI-Reference Signal) received from a plurality of coordinating cells; calculating a precoding matrix based on the estimated channel state information of the serving cell; calculating precoded channel state information respectively for the serving cell of the mobile terminal and neighboring cells in the coordinating cells according to the obtained precoding matrix; and feeding the precoded channel state information back to the serving cell of the mobile terminal. The above technical scheme can implement flexible and efficient channel status information feedback with low overhead, and enable multi-cell coordinated transmission to perform flexible and efficient precoding processing based on the feedback.

Abstract translation: 本发明的实施例提供了一种用于信道状态信息反馈的方法和装置。 该方法包括：根据从多个协调小区接收的信道状态信息参考信号（CSI-参考信号），估计从移动终端到服务小区和相邻小区的信道状态信息; 基于所述服务小区的估计信道状态信息来计算预编码矩阵; 根据获得的预编码矩阵，分别为协调小区中的移动终端的服务小区和相邻小区分别计算预编码信道状态信息; 以及将预编码的信道状态信息反馈给移动终端的服务小区。 上述技术方案可以以低开销实现灵活高效的信道状态信息反馈，实现多小区协调传输，根据反馈进行灵活高效的预编码处理。

公开(公告)号：US20120040702A1

公开(公告)日：2012-02-16

申请号：US13264495

申请日：2009-04-16

Applicant: Keying Wu ,  Yang Song ,  Xiaolong Zhu

Inventor： Keying Wu ,  Yang Song ,  Xiaolong Zhu

IPC: H04B15/00 ,  H04W4/00

CPC classification number: H04W72/0426 ,  H04B7/024 ,  H04B7/0413 ,  H04L5/0035 ,  H04L5/0073

Abstract: According to an embodiment of the present invention, on a radio resource block for Multi-BS MIMO, one of the coordinating base stations selects a mobile terminal at first, and informs the other base stations of the characterization information and the pre-coding information etc. of the selected mobile terminal, and the selection made by the other base stations will obey the selection result of the base station that selects at first. By applying the method and apparatus provided by the present invention, the joint selection of object terminals in the Multi-BS MIMO is realized, and such selection is distributed without any central scheduling device which is necessary in the central scheduling scheme. In addition, only very limited information exchange among the coordinating base stations is required to realize the present invention. According to an embodiment of the present invention, the object terminals selected by the coordinating base stations are matched well with each other such that the total performance of the system is improved; according to an embodiment of the present invention, the fairness among the base stations can be well satisfied.

Abstract translation: 根据本发明的实施例，在多BS MIMO的无线资源块中，协调基站之一首先选择移动终端，并向其他基站通知特征信息和预编码信息等 ，并且由其他基站进行的选择将服从首先选择的基站的选择结果。 通过应用本发明提供的方法和装置，实现了多BS MIMO中的对象终端的联合选择，并且在中央调度方案中不需要任何中央调度装置的情况下分发这种选择。 此外，为了实现本发明，需要协调基站之间的非常有限的信息交换。 根据本发明的实施例，由协调基站选择的对象终端彼此匹配，从而提高了系统的总体性能; 根据本发明的实施例，可以很好地满足基站之间的公平性。

公开(公告)号：US20110142164A1

公开(公告)日：2011-06-16

申请号：US13059701

申请日：2008-08-18

Applicant: Keying Wu ,  Yang Song ,  Liyu Cai ,  Dong Li

Inventor： Keying Wu ,  Yang Song ,  Liyu Cai ,  Dong Li

IPC: H04L27/00

CPC classification number: H04B7/024 ,  H04B7/0495

Abstract: A method and device for performing Multi-Input Multi-Output transmission to a mobile terminal in the base station devices of a wireless communication system is provided. Each base station device determines the sector coordination group used at a certain frequency band according to system settings. Each base station device only performs multiple-sector (-cell) collaborative MIMO transmission in the sector coordination group which includes the sectors governed by the base station device. A simple and effective method is provided for realizing the multiple-sector (-cell) MIMO technology, its advantages including but not limited to there being a reduced amount of information exchanged between sectors (cells), which facilitates implementation and management, and good performance in controlling interface between sectors (cells).

Abstract translation: 提供了一种用于在无线通信系统的基站设备中向移动终端执行多输入多输出传输的方法和设备。 每个基站设备根据系统设置确定在某个频带使用的扇区协调组。 每个基站设备仅在包括由基站设备管理的扇区的扇区协调组中执行多扇区（ - 小区）协作MIMO传输。 提供了一种实现多扇区（-cell）MIMO技术的简单有效的方法，其优点包括但不限于在扇区（小区）之间交换的信息量减少，这有助于实现和管理，并且具有良好的性能 在控制扇区（单元）之间的接口。

公开(公告)号：US20110028156A1

公开(公告)日：2011-02-03

申请号：US12936696

申请日：2009-03-13

Applicant: Xiaolong Zhu ,  Liyu Cai ,  Keying Wu ,  Hongwei Yang

Inventor： Xiaolong Zhu ,  Liyu Cai ,  Keying Wu ,  Hongwei Yang

IPC: H04W72/04

CPC classification number: H04B7/024 ,  H04B7/0417 ,  H04B7/0634 ,  H04B7/065

Abstract: A method and device for controlling the serving BS and at least one coordinating BS for coordinating downlink data communication with the MS in a wireless telecommunication network based on CO-MIMO technology. The method comprises obtaining the MIMO downlink channel information between the serving BS and the MS and between the coordinating BS and the MS, determining the downlink signal precoding information between the serving BS and the MS and between the coordinating BS and the MS according to the channel information, and performing MIMO downlink data communication coordinately with the MS based on the downlink signal precoding information.

Abstract translation: 一种用于在基于CO-MIMO技术的无线电信网络中控制服务BS和至少一个协调BS以协调与MS的下行链路数据通信的方法和设备。 该方法包括：获取服务BS与MS之间以及协调BS与MS之间的MIMO下行链路信道信息，根据信道确定服务BS与MS之间以及协调BS与MS之间的下行链路信号预编码信息 信息，并且基于下行链路信号预编码信息与MS协调地执行MIMO下行链路数据通信。