公开(公告)号：US10735158B2

公开(公告)日：2020-08-04

申请号：US15747753

申请日：2016-06-20

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Rakesh Tamrakar ,  Qiubin Gao ,  Runhua Chen ,  Wenhong Chen ,  Hui Li

IPC: H04L5/00 ,  H04W72/04

Abstract: A reference signal mapping method and a reference signal mapping device are provided. The reference signal mapping method includes steps of: determining a position of a RE to which a CSI-RS has been mapped in accordance with an N-port reference signal pattern, N being equal to 12 or 16; and performing a resource mapping operation on the CSI-RS in accordance with the determined position of the RE. The position of the RE to which the CSI-RS has been mapped in the N-port reference signal pattern being determined in accordance with a position of the RE to which the CSI-RS has been mapped in one or more of a 2-port reference signal pattern, a 4-port reference signal pattern and an 8-port reference signal pattern. As a result, it is able to achieve the 12-port or 16-port CSI-RS mapping, thereby to achieve the 12-port or 16-port CSI-RS transmission.

公开(公告)号：US10708018B2

公开(公告)日：2020-07-07

申请号：US15770156

申请日：2016-09-12

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Wenhong Chen ,  Xueming Pan ,  Qiubin Gao ,  Rakesh Tamrakar

IPC: H04L5/00 ,  H04W72/04 ,  H04B7/06 ,  H04L5/14

Abstract: A method and a device for determining a CSI-RS transmission resource are provided. The method includes: acquiring, by a UE, uplink/downlink subframe configuration information for determining a position of a CSI-RS resource; determining, by the UE, a type of a subframe within which the CSI-RS is to be transmitted in accordance with the uplink/downlink subframe configuration information; and determining, by the UE, the position of the CSI-RS resource within the subframe within which the CSI-RS is to be transmitted in accordance with the determined type of the subframe.

公开(公告)号：US10651997B2

公开(公告)日：2020-05-12

申请号：US15759513

申请日：2016-06-14

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Rakesh Tamrakar ,  Runhua Chen ,  Qiubin Gao ,  Wenhong Chen ,  Hui Li

IPC: H04W4/00 ,  H04L5/00 ,  H04L5/14 ,  H04W72/04

Abstract: The present disclosure provides in some embodiments pilot signal configuration methods and pilot signal configuration devices. The pilot signal configuration method includes steps of: determining configuration information about a pilot signal to be transmitted within a special downlink subframe for a UE; and transmitting the configuration information to the UE. According to some embodiments of the present disclosure, it is able to achieve the configuration of the pilot signal to be transmitted within the special downlink subframe.

公开(公告)号：US10205500B2

公开(公告)日：2019-02-12

申请号：US15751460

申请日：2016-08-08

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Hui Li ,  Qiubin Gao ,  Runhua Chen ,  Wenhong Chen ,  Rakesh Tamrakar

IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/06

Abstract: A precoding matrix determination method and a precoding matrix determination device are provided. The precoding matrix determination method includes: dividing each of the groups of vertical-dimension beams into a plurality of subgroups of vertical-dimension beams, and dividing each of the groups of horizontal-dimension beams into a plurality of subgroups of horizontal-dimension beams; determining a first stage codebook in accordance with a Kronecker product of each subgroup of vertical-dimension beams acquired by dividing each of the groups of vertical-dimension beams and each subgroup of horizontal-dimension beams acquired by dividing each of the groups of horizontal-dimension beams; and selecting a plurality of columns of beams from the determined first stage codebook using a second stage codebook, and performing phase adjustment to determine a precoding matrix.

公开(公告)号：US09504028B2

公开(公告)日：2016-11-22

申请号：US14413671

申请日：2013-07-04

Applicant: China Academy of Telecommunications Technology

Inventor： Xueming Pan ,  Rui Zhao ,  Rakesh Tamrakar

IPC: H04W72/04 ,  H04L1/00 ,  H04W48/12 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L1/00 ,  H04L1/0038 ,  H04L1/0046 ,  H04L5/0053 ,  H04W48/12 ,  H04W72/0446

Abstract: Disclosed are a blind detection mode determination method, blind detection method and device, the blind detection mode determination method comprising: a base station determines the E-PDCCH blind detection mode of a terminal in a subframe according to system configuration information and the blind detection capability of the terminal, and informs the terminal of the determined E-PDCCH blind detection mode of the terminal in the subframe. The blind detection method comprises: a terminal determines the E-PDCCH blind detection mode in a subframe, and conducts E-PDCCH blind detection in the subframe according to the determined E-PDCCH blind detection mode. The E-PDCCH blind detection mode of a UE in a subframe is determined according to the resource occupied in a subframe by the system configuration information, enabling the UE to conduct E-PDCCH blind detection in the subframe according to the determined E-PDCCH blind detection mode, thus avoiding unnecessary energy overhead.

Abstract translation: 本发明公开了一种盲检测模式确定方法，盲检测方法和装置，所述盲检测模式确定方法包括：基站根据系统配置信息和盲检测能力确定子帧中的终端的E-PDCCH盲检测模式 并且在子帧中通知终端确定的终端的E-PDCCH盲检测模式。 盲检测方法包括：终端确定子帧中的E-PDCCH盲检测模式，并根据确定的E-PDCCH盲检测模式进行子帧中的E-PDCCH盲检测。 根据系统配置信息，根据子帧占用的资源确定子帧中的UE的E-PDCCH盲检测模式，使UE能够根据确定的E-PDCCH盲目在子帧中进行E-PDCCH盲检测 检测模式，从而避免不必要的能量开销。

公开(公告)号：US09344164B2

公开(公告)日：2016-05-17

申请号：US14424035

申请日：2013-08-27

Applicant: China Academy of Telecommunications Technology

Inventor： Meifang Jing ,  Xin Su ,  Rakesh Tamrakar

IPC: H04L1/02 ,  H04L27/28 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0417 ,  H04B7/0456 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/065 ,  H04B7/0652

Abstract: The embodiments of the disclosure relate to the technical field of wireless communications, and particularly relate to a method, a system and a device for feeding back and receiving a Pre-coding Matrix Indicator (PMI), which is used for feeding back a vertical dimension PMI. The method for feeding back the PMI provided by the embodiments of the disclosure comprises: confirming the PMI needed to be fed back, wherein the PMI comprises a horizontal dimension PMI and a vertical dimension PMI, or a PMI combined by horizontal dimension and vertical dimension (801); feeding back the confirmed PMI in a non periodic Channel State Information (CSI) feedback mode or a periodic CSI feedback mode (802). Since the capability of feeding back the vertical dimension PMI, dynamic 3D beam shaping technology can be implemented and the throughput of the user equipments in the edge of cell and the average throughput can be improved.

Abstract translation: 本公开的实施例涉及无线通信的技术领域，特别涉及用于反馈和接收预编码矩阵指示符（PMI）的方法，系统和设备，其用于反馈垂直维度 PMI。 用于反馈由本公开的实施例提供的PMI的方法包括：确认需要反馈的PMI，其中PMI包括水平尺寸PMI和垂直维度PMI或由水平尺寸和垂直尺寸组合的PMI（ 801）; 在非周期性信道状态信息（CSI）反馈模式或周期性CSI反馈模式（802）中反馈确认的PMI。 由于反馈垂直尺寸PMI的能力，可以实现动态3D波束整形技术，可以提高单元边缘用户设备的吞吐量和平均吞吐量。

公开(公告)号：US11949620B2

公开(公告)日：2024-04-02

申请号：US16496698

申请日：2018-03-14

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Rakesh Tamrakar ,  Qiubin Gao ,  Xin Su ,  Hui Li ,  Qiuping Huang

IPC: H04L5/00 ,  H04W72/044 ,  H04W72/1268 ,  H04W72/23

CPC classification number: H04L5/0051 ,  H04W72/046 ,  H04W72/1268 ,  H04W72/23

Abstract: A signal processing method and device are provided. The method includes indicating a first uplink sounding reference signal resource to a terminal, wherein the first uplink sounding reference signal resource is used for uplink beam scanning; receiving a uplink sounding reference signal transmitted by the terminal by using the first uplink sounding reference signal resource; determining a target uplink sounding reference signal based on the uplink sounding reference signal transmitted by the terminal, and transmitting an identifier of the target uplink sounding reference signal to the terminal; indicating a second uplink sounding reference signal resource to the terminal, the second uplink sounding reference signal resource being used to cause the terminal to transmit an uplink sounding reference signal for channel measurement based on the identifier of the target uplink sounding reference signal and the second uplink sounding reference signal resource.

公开(公告)号：US11770757B2

公开(公告)日：2023-09-26

申请号：US16317945

申请日：2017-07-11

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Hui Li ,  Qiubin Gao ,  Runhua Chen ,  Chuanjun Li ,  Xin Su ,  Yang Song ,  Rakesh Tamrakar ,  Yu Yang ,  Qiuping Huang ,  Mengjun Wang

IPC: H04W48/08 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04W48/08 ,  H04L5/0094 ,  H04L27/2666

Abstract: A method and a device for accessing a system information area or a network area are provided. The method includes: receiving, by a terminal, at least one initial access signal (IAS) transmitted from the system information area or the network area; and obtaining, by the terminal, one or more of a subframe boundary, a system bandwidth, a starting frequency and an ending frequency of the system information area or the network area based on the received IAS.

公开(公告)号：US11463219B2

公开(公告)日：2022-10-04

申请号：US16645413

申请日：2018-09-05

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Hui Li ,  Qiubin Gao ,  Rakesh Tamrakar ,  Runhua Chen ,  Xin Su ,  Deshan Miao ,  Qiuping Huang

IPC: H04L5/00

Abstract: The present disclosure provides a reference signal transmission method, a reference signal transmission device, a base station and a user equipment. The transmission method of the present disclosure includes: implicitly or explicitly indicating to a user equipment (UE), position information of a target subcarrier for mapping a target phase tracking reference signal (PTRS) port, among subcarriers occupied by a target demodulation reference signal (DMRS) port. The target DMRS port is a DMRS port associated with the target PTRS port.

公开(公告)号：US11336339B2

公开(公告)日：2022-05-17

申请号：US16608154

申请日：2018-04-17

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Rakesh Tamrakar ,  Qiubin Gao ,  Hui Li

IPC: H04B7/0456 ,  H04L1/00 ,  H04W72/04 ,  H04W72/12

Abstract: Provided in the present disclosure are a precoding matrix indication method, a terminal, and a network device, the method includes: receiving, by a terminal, a control signaling transmitted from a network side device, wherein the control signaling includes N bits of precoding information, and the N is a positive integer; determining, by the terminal, a quantity of precoding granules according to a scheduling resource, and determining, by the terminal, bits of the precoding information of each of the precoding granules in the N bits of precoding information according to the quantity of the precoding granules, wherein each of the precoding granules includes at least one subband, and each of the at least one subband includes at least one PRB; and acquiring, by the terminal, a precoding matrix indicated by the bits of the precoding information of each of the precoding granules.