公开(公告)号：US20230275681A1

公开(公告)日：2023-08-31

申请号：US18314960

申请日：2023-05-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Mengting LIU ,  Xin GAO ,  Jianghua LIU

IPC: H04J13/18 ,  H04L5/00

CPC classification number: H04J13/18 ,  H04L5/0048

Abstract: A signal sending method includes generating a first signal based on a reference sequence or an orthogonal cover code (OCC), where the reference sequence is a sequence in a sequence set; and any two sequences in the sequence set are orthogonal to each other; or the OCC is included in an OCC set, and any two OCCs in the OCC set are orthogonal to each other; and sending the first signal on M time-frequency resource elements, where the first signal includes M sub-signals; the M time-frequency resource elements are in a one-to-one correspondence with the M sub-signals; any two of the M time-frequency resource elements do not overlap in frequency domain or in time domain; and M is an integer greater than 1.

公开(公告)号：US20210320771A1

公开(公告)日：2021-10-14

申请号：US17357080

申请日：2021-06-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianghua LIU ,  Liyan SU

IPC: H04L5/00 ,  H04B7/06

Abstract: Methods for obtaining downlink channel information and an apparatus are provided. One example method includes that an access network device estimates first uplink channel state information of a terminal device based on a first reference signal received from the terminal device, and estimates second uplink channel state information of the terminal device based on a group of second reference signals received from the terminal device. Because the group of second reference signals is precoded by using downlink channel information of the terminal device, the access network device may determine, based on the estimated first uplink channel state information and the estimated second uplink channel state information, the downlink channel information fed back by the terminal device.

公开(公告)号：US20190173548A1

公开(公告)日：2019-06-06

申请号：US16262857

申请日：2019-01-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Leiming ZHANG ,  Jianghua LIU

IPC: H04B7/06

Abstract: This application relates to the field of mobile communications, and in particular, to technologies of obtaining channel state information in a wireless communications system. In a channel information obtaining method, a base station obtains channel state matrix information of some channels based on uplink reference information sent by a terminal and partial channel state information of channels between the base station and the terminal, to obtain channel state matrix information of the channels between the base station and the terminal. Base on this method, relatively complete channel state matrix information of the channels between the base station and the terminal can be obtained. This helps the base station select an appropriate parameter to transmit data to the terminal without causing an additional delay, performance loss, or cost increase, or consuming more time-frequency resources used for the uplink reference signal.

公开(公告)号：US20190089508A1

公开(公告)日：2019-03-21

申请号：US16197611

申请日：2018-11-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng LIU ,  Jianghua LIU

IPC: H04L5/00 ,  H04W72/12 ,  H04L1/00 ,  H04W48/12

Abstract: Embodiments of the present invention disclose methods and apparatuses for receiving and sending a control channel, and are applicable to the field of communications technologies. In the embodiments of the present invention, a base station carries scheduling information of a user equipment of an R11 system in both the PDCCH region and the E-PDCCH region of a downlink subframe. In this way, the user equipment needs to detect the control channel within the PDCCH region and the E-PDCCH region, so that resources of the two regions are available to the user equipment of the R11 system. Moreover, the user equipment detects only the control channel of the first type in the PDCCH region, and detects control channels of the other type in the E-PDCCH region. The method in the embodiments of the present invention does not increase the number of control channel detections.

公开(公告)号：US20170302494A1

公开(公告)日：2017-10-19

申请号：US15639373

申请日：2017-06-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianqin LIU ,  Jianghua LIU ,  Qiang WU ,  Yongxing ZHOU

IPC: H04L27/26 ,  H04J11/00

CPC classification number: H04L27/2676 ,  H04J1/00 ,  H04J11/0073 ,  H04J11/0076 ,  H04L5/0048

Abstract: The present invention provides a signal sending apparatus, a signal detection apparatus, a signal sending and detection system, a signal sending method, and a signal detection method. The apparatus determines a time unit that is in each time window and that is used to transmit a synchronization signal, and transmits the synchronization signal in the determined time unit in each time window. Therefore, a synchronization signal is always located in a time unit that has a fixed location in each time window, so that a device at a receive end needs to perform detection only in a fixed time unit in each time window, thereby reducing complexity of designing and detecting the synchronization signal.

公开(公告)号：US20150229378A1

公开(公告)日：2015-08-13

申请号：US14621350

申请日：2015-02-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Mattias FRENNE ,  Jianghua LIU

IPC: H04B7/06 ,  H04B7/04 ,  H04W72/04

CPC classification number: H04B7/0626 ,  H04B7/0417 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/066 ,  H04B7/10 ,  H04W72/0453

Abstract: A mobile station is connected to a multi-carrier cellular communication system having a plurality of sub-carriers. The sub-carriers are classified into K frequency sub-bands, channel state information (CSI) of the frequency sub-bands is represented by matrices Wi (i=0 . . . K−1), where K is an integer grater than 1. The mobile station determines a first sub-index k1 for the K matrices Wi (i=0 . . . K−1), and a second sub-index k2 for each one of the K matrices Wi (i=0 . . . K−1). The first sub-index k1 is common for all frequency sub-bands, and the second sub-index k2 is specific for the indexed matrix that corresponds to one frequency sub-band. The mobile station reports to a base station of the multi-carrier cellular communication system the first sub-index k1 and at least one second sub-index k2.

Abstract translation: 移动台连接到具有多个子载波的多载波蜂窝通信系统。 子载波被分类为K个频率子带，频率子带的信道状态信息（CSI）由矩阵Wi（i = 0 ... K-1）表示，其中K是比1的整数倍 移动台确定用于K个矩阵W i（i = 0 ... K-1）的第一子索引k1和K个矩阵W i（i = 0 ... K-1）中的每一个的第二子索引k2。 K-1）。 第一子索引k1对于所有频率子带是公共的，并且第二子索引k2对于对应于一个频率子带的索引矩阵是特定的。 移动台向多载波蜂窝通信系统的基站报告第一子索引k1和至少一个第二子索引k2。

公开(公告)号：US20150146670A1

公开(公告)日：2015-05-28

申请号：US14611837

申请日：2015-02-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng LIU ,  Chi GAO ,  Jianghua LIU ,  Jianqin LIU

IPC: H04W72/04

CPC classification number: H04W72/042 ,  H04L5/0007 ,  H04L5/0053 ,  H04W72/04

Abstract: This application provides an enhanced physical downlink control channel transmission method and apparatus. The method includes: in a physical resource block set, separately arranging first resource groups in each physical resource block pair PRB pair, where the first resource groups are resource element groups eREGs or REGs, and the physical resource block set includes at least one of the physical resource block pairs; numbering second resource groups according to a correspondence between the first resource groups and the second resource groups in the physical resource block set, where the second resource groups are control channel element eCCE groups or control channel candidates; determining numbers of the second resource groups for transmitting an E-PDCCH; and mapping, according to the determined numbers, the E-PDCCH to the corresponding first resource groups for transmission. The technical solution of this application resolves an E-PDCCH transmission problem.

Abstract translation: 该应用提供增强的物理下行链路控制信道传输方法和装置。 该方法包括：在物理资源块集合中，在每个物理资源块对PRB对中分别布置第一资源组，其中第一资源组是资源元素组eREG或REG，并且物理资源块集合包括以下各项中的至少一个： 物理资源块对; 根据物理资源块集合中的第一资源组和第二资源组之间的对应关系，对第二资源组进行编号，其中第二资源组是控制信道单元eCCE组或控制信道候选; 确定用于发送E-PDCCH的第二资源组的号码; 以及根据确定的数量将所述E-PDCCH映射到相应的第一资源组以进行传输。 该应用的技术方案解决了E-PDCCH传输问题。

公开(公告)号：US20150055543A1

公开(公告)日：2015-02-26

申请号：US14480579

申请日：2014-09-08

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Junwei WANG ,  Xiaoan FAN ,  Jianghua LIU

IPC: H04W72/04 ,  H04W4/06

CPC classification number: H04L5/14 ,  H04J11/00 ,  H04L5/0007 ,  H04L5/003 ,  H04L5/0091 ,  H04L5/22 ,  H04L49/201 ,  H04W4/06 ,  H04W72/005 ,  H04W72/02 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/0493

Abstract: A method and device for service time division multiplexing as well as a method and a device for transmitting service are disclosed. The method for service time division multiplexing includes selecting a part or all of radio frames in one time unit as specific radio frames; and selecting a part or all of subframes in the specific radio frames as specific subframes for sending a specific service. The specific service is a multimedia broadcast multicast service, or a unicast service, or one or more than one kind of services transmitted in broadcast or multicast mode.

Abstract translation: 公开了一种用于业务时分复用的方法和设备以及用于发送业务的方法和设备。 服务时分多路复用方法包括以一个时间单位选择一部分或全部无线帧作为特定的无线帧; 以及在所述特定无线帧中选择一部分或全部子帧作为用于发送特定服务的特定子帧。 该特定服务是多媒体广播多播服务或单播服务，或以广播或组播模式发送的一种或多种服务。

公开(公告)号：US20140341180A1

公开(公告)日：2014-11-20

申请号：US14448187

申请日：2014-07-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng LIU ,  Jianghua LIU

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0051 ,  H04L5/0005 ,  H04L5/0007 ,  H04L5/0053 ,  H04L25/0224 ,  H04L27/2613 ,  H04W72/042

Abstract: The embodiments of the present invention provide a demodulation reference signal processing method, a base station and a user equipment. A processing method includes: generating, by a base station, a DMRS corresponding to an E-PDCCH by using information that is available before a UE receives the E-PDCCH sent by the base station; and mapping, by the base station, the DMRS onto a time-and-frequency resource corresponding to a downlink control channel region and used for transmitting a reference signal, and sending the DMRS to the UE. In the technical solutions of the embodiments of the present invention, the base station and the UE no longer use an SCID for generating the DMRS, which solves the problem that the UE cannot obtain the SCID before receiving the E-PDCCH and cannot generate the DMRS, and further, cannot demodulate the E-PDCCH, and enables demodulation of the E-PDCCH.

Abstract translation: 本发明的实施例提供一种解调参考信号处理方法，基站和用户设备。 一种处理方法包括：通过使用在UE接收到由基站发送的E-PDCCH之前可用的信息，由基站生成与E-PDCCH对应的DMRS; 以及由基站将DMRS映射到对应于下行链路控制信道区域并用于发送参考信号的时间和频率资源，并将DMRS发送给UE。 在本发明的实施例的技术方案中，基站和UE不再使用用于生成DMRS的SCID，这解决了在接收到E-PDCCH之前UE不能获得SCID并且不能生成DMRS的问题 并且不能解调E-PDCCH，并且能够解调E-PDCCH。

公开(公告)号：US20140105162A1

公开(公告)日：2014-04-17

申请号：US14134932

申请日：2013-12-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chaojun LI ,  Yongxia WU ,  Qiang WU ,  Jianghua LIU

IPC: H04W72/04

CPC classification number: H04W72/042 ,  H04B7/0417 ,  H04L5/0091

Abstract: The present invention discloses a method and an apparatus for transmitting control signaling. The method includes: determining that a physical downlink shared channel PDSCH transmission scheme for a non-backward compatible component carrier is a user equipment-specific reference signal UE RS-based non-precoding matrix indicator Non-PMI feedback transmission scheme or a UE RS-based up to 8 layer transmission scheme; and sending downlink control information DCI to a UE, where the DCI is used to indicate the determined PDSCH transmission scheme. The apparatus includes a determining module and a first sending module. The method and apparatus in embodiments of the present invention can expand application scenarios of the non-backward compatible component carrier, increase spectrum utilization of the system, and avoid a system capacity decrease problem caused by limitations on the application scenarios of the non-backward compatible component carrier.

Abstract translation: 本发明公开了一种用于发送控制信令的方法和装置。 该方法包括：确定用于非向后兼容分量载波的物理下行链路共享信道PDSCH传输方案是基于用户设备的参考信号基于UE RS的非预编码矩阵指示符非PMI反馈传输方案或UE RS- 基于8层传输方案; 并向UE发送下行链路控制信息DCI，其中DCI用于指示所确定的PDSCH传输方案。 该装置包括确定模块和第一发送模块。 本发明的实施例中的方法和装置可以扩展非向后兼容分量载波的应用场景，增加系统的频谱利用率，并避免系统容量减少问题，这是由于对非向后兼容的应用场景的限制 分量载体。