公开(公告)号：US10333687B2

公开(公告)日：2019-06-25

申请号：US15319805

申请日：2014-10-20

Applicant: ZTE CORPORATION

Inventor： Chaowei Wang ,  Chen Huang ,  Cheng Wang ,  Nan Li ,  Mingxia Cao ,  Tian Cai ,  Yihuai Zhang

IPC: H04L5/14 ,  H04B7/06 ,  H04B7/0452 ,  H04B7/0456 ,  H04L25/03

Abstract: Disclosed are a method and apparatus for interference alignment based on codebook design and selection. The method includes: a codebook set including codebooks of different sizes of a precoding matrix is pre-designed or pre-stored; a receiver or a transmitter selects a codebook satisfying a specified condition from the codebook set to explicitly or implicitly notify the opposite end; the receiver designs, based on obtained ideal CSI and an interference alignment condition, a precoding matrix V and a receiving matrix U for interference alignment; the receiver selects a matrix V′ having the highest similarity to V from the current codebook to serve as a finally quantized precoding matrix V′; the receiver calculates, based on V′, U again to obtain a receiving matrix U′ according to the interference alignment condition; and the transmitter transmits a signal according to feedback information and V′, and the receiver filters the signal according to U′.

公开(公告)号：US10069545B2

公开(公告)日：2018-09-04

申请号：US15102902

申请日：2014-06-16

Applicant: ZTE Corporation

Inventor： Chaowei Wang ,  Nan Li ,  Wanfang Zhang ,  Cheng Wang ,  Xiao Zhang ,  Shuai Wang ,  Chen Huang

IPC: H04B7/04 ,  H04B7/0452 ,  H04L25/03 ,  H04B7/024 ,  H04B7/06 ,  H04B7/0456 ,  H04L1/00 ,  H04W72/08 ,  H04W72/00 ,  H04L5/00 ,  H04W88/02 ,  H04W88/08

Abstract: Provided is a method for interference alignment applied to a multi-cell and multi-user Multiple Input Multiple Output (MIMO) system. The method includes that: a BS divides multiple users in a cell into a plurality of user groups, and notifies the multiple users of grouping information; and when one of the plurality of user groups is interfered by a neighbor cell, users in the one of the plurality of user groups cooperate with each other to perform interference alignment. The disclosure also provides a pre-coding method and system based on interference alignment. The disclosure, by means of grouping and cooperation of the users and designing of a receiving matrix of each user, achieves the effect of interference alignment in a signal transmission space of the BS.

公开(公告)号：US09537625B2

公开(公告)日：2017-01-03

申请号：US14414510

申请日：2013-06-27

Applicant: ZTE CORPORATION

Inventor： Yajun Zhao ,  Linmei Mo ,  Hanqing Xu ,  Yujie Li ,  Baoyu Sun ,  Chen Huang

IPC: H04W4/00 ,  H04L5/00 ,  H04L25/02 ,  H04W88/08 ,  H04B7/02

CPC classification number: H04L5/0035 ,  H04B7/024 ,  H04L5/0005 ,  H04L25/0204 ,  H04L25/022 ,  H04W88/08

Abstract: A method and a base station for calibrating data transmitted by coordinated APs are disclosed. The method includes: a base station obtaining an uplink channel frequency-domain response and a downlink channel frequency-domain response between a first AP and a second AP which participate in coordination; the base station dividing the uplink channel frequency-domain response by the downlink channel frequency-domain response to obtain an uplink and downlink channel response difference between the first AP and the second AP; and the base station calibrating the data transmitted by the first AP and the second AP in coordination according to the uplink and downlink channel response difference. The method and base station in the embodiments of the present document are applied to calibrate the data transmitted by coordinated APs.

Abstract translation: 公开了一种用于校准由协调的AP发送的数据的方法和基站。 该方法包括：基站获得参与协调的第一AP与第二AP之间的上行链路信道频域响应和下行链路信道频域响应; 所述基站通过所述下行链路信道频域响应划分所述上行链路信道频域响应，以获得所述第一AP与所述第二AP之间的上行链路和下行链路信道响应差; 并且基站根据上行链路和下行链路信道响应差异来协调地校准由第一AP和第二AP发送的数据。 应用本文的实施例中的方法和基站来校准协调AP发送的数据。

公开(公告)号：US09979521B2

公开(公告)日：2018-05-22

申请号：US15038044

申请日：2014-06-18

Applicant: ZTE CORPORATION

Inventor： Nan Li ,  Chen Huang ,  Dongying Zhang ,  Zhen Ren ,  Peng Geng ,  Gang Qiu ,  Yufeng Ruan ,  Fang Zhang ,  Xi Yuan

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/024 ,  H04W72/00

CPC classification number: H04L5/0035 ,  H04B7/024 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0091 ,  H04W72/00 ,  H04W72/042

Abstract: The present document discloses a method, apparatus and system for indicating downlink resources of a coordinated multi-point network in an LTE system. The method includes: determining a control station/cell and a service station/cell of a User Equipment (UE); and indicating through signaling that a Physical Downlink Shared Channel (PDSCH) of the UE occupies radio resources of the service station/cell in a control region, whereby a start position of the PDSCH allocated for the UE by the service station/cell is the first symbol of a subframe, and when a resource mapping in the control region is performed, the PDSCH does not occupy Resource Elements (REs) occupied by a Cell Reference Signal (CRS), a Physical Control Format Indicator Channel (PCFICH), a Physical Hybrid-ARQ Indicator Channel (PHICH) of a station/cell where the PDSCH is located, and a Physical Downlink Control Channel PDCCH of the UE.

公开(公告)号：US09912390B2

公开(公告)日：2018-03-06

申请号：US14776617

申请日：2013-12-25

Applicant: ZTE Corporation

Inventor： Baoyu Sun ,  Yajun Zhao ,  Yujie Li ,  Xin Zhang ,  Linmei Mo ,  Hanqing Xu ,  Guofeng Chen ,  Chen Huang

IPC: H04W4/00 ,  H04B7/0456 ,  H04B7/04 ,  H04B7/0452 ,  H04B7/06 ,  H04L25/02 ,  H04B17/24 ,  H04B17/309

CPC classification number: H04B7/0456 ,  H04B7/0421 ,  H04B7/043 ,  H04B7/0452 ,  H04B7/063 ,  H04B7/0634 ,  H04B7/0682 ,  H04B17/24 ,  H04B17/309 ,  H04L25/0222 ,  H04L25/0224 ,  H04L25/03343

Abstract: A method for guaranteeing channel phase continuity of pre-coded RB groups, a base station and a computer-readable storage medium are described. The method includes that: a base station implements a channel estimation through a Sounding Reference Signal (SRS) measurement to obtain an uplink channel and obtains a corresponding downlink channel based on reciprocity of uplink and downlink channels; the base station calculates a weight phase correction factor based on the obtained downlink channel and corrects a pre-coding weight with the weight phase correction factor; and the base station pre-codes data according to the corrected pre-coding weight and sends the pre-coded data.

公开(公告)号：US09590776B2

公开(公告)日：2017-03-07

申请号：US14389588

申请日：2013-04-10

Applicant: ZTE Corporation

Inventor： Yajun Zhao ,  Linmei Mo ,  Chen Huang ,  Hanqing Xu ,  Yujie Li ,  Baoyu Sun ,  Qian Wang ,  Yunfeng Sun

IPC: H04L5/00 ,  H04W56/00 ,  H04L1/00 ,  H04B7/04 ,  H04W24/08 ,  H04W72/04 ,  H04B17/11 ,  H04B17/364

CPC classification number: H04L5/0035 ,  H04B7/0417 ,  H04B17/11 ,  H04B17/364 ,  H04L1/0026 ,  H04W24/08 ,  H04W56/00 ,  H04W56/001 ,  H04W72/0413

Abstract: The embodiment of the present invention discloses a method, a system and an apparatus for calibrating deviation among multiple access points, which are used for solving a problem that information received by a user equipment (UE) is not synchronous, caused when different access points send data to the UE at the same time, and improving system performance and frequency spectrum efficiency. The method for calibrating deviation among multiple access points comprises the following steps: in step A: a base station sending to a UE a message instructing the UE to perform measurement and return deviation calibration information among the multiple access points (S101); and in step B: the base station calibrating the deviation among the multiple access points based on the deviation calibration information among the multiple access points returned by the UE (S102).

Abstract translation: 本发明的实施例公开了一种用于校准多个接入点之间的偏差的方法，系统和装置，其用于解决当不同接入点发送时由用户设备（UE）接收的信息不同步的问题 同时向UE提供数据，提高系统性能和频谱效率。 用于校准多个接入点之间的偏差的方法包括以下步骤：步骤A：基站向UE发送指示UE在多个接入点之间执行测量的消息和返回偏差校准信息（S101）; 并且在步骤B中：基站基于UE返回的多个接入点之间的偏差校准信息来校准多个接入点之间的偏差（S102）。

公开(公告)号：US20150172014A1

公开(公告)日：2015-06-18

申请号：US14414510

申请日：2013-06-27

Applicant: ZTE CORPORATION

Inventor： Yajun Zhao ,  Linmei Mo ,  Hanqing Xu ,  Yujie Li ,  Baoyu Sun ,  Chen Huang

IPC: H04L5/00

CPC classification number: H04L5/0035 ,  H04B7/024 ,  H04L5/0005 ,  H04L25/0204 ,  H04L25/022 ,  H04W88/08

Abstract: A method and a base station for calibrating data transmitted by coordinated APs are disclosed. The method includes: a base station obtaining an uplink channel frequency-domain response and a downlink channel frequency-domain response between a first AP and a second AP which participate in coordination; the base station dividing the uplink channel frequency-domain response by the downlink channel frequency-domain response to obtain an uplink and downlink channel response difference between the first AP and the second AP; and the base station calibrating the data transmitted by the first AP and the second AP in coordination according to the uplink and downlink channel response difference. The method and base station in the embodiments of the present document are applied to calibrate the data transmitted by coordinated APs.

Abstract translation: 公开了一种用于校准由协调的AP发送的数据的方法和基站。 该方法包括：基站获得参与协调的第一AP与第二AP之间的上行链路信道频域响应和下行链路信道频域响应; 所述基站通过所述下行链路信道频域响应划分所述上行链路信道频域响应，以获得所述第一AP与所述第二AP之间的上行链路和下行链路信道响应差; 并且基站根据上行链路和下行链路信道响应差异来协调地校准由第一AP和第二AP发送的数据。 应用本文的实施例中的方法和基站来校准协调AP发送的数据。

公开(公告)号：US20150055496A1

公开(公告)日：2015-02-26

申请号：US14389588

申请日：2013-04-10

Applicant: ZTE Corporation

Inventor： Yajun Zhao ,  Linmei Mo ,  Chen Huang ,  Hanqing Xu ,  Yujie Li ,  Baoyu Sun ,  Qian Wang ,  Yunfeng Sun

IPC: H04L5/00 ,  H04B7/04 ,  H04W56/00 ,  H04W24/08 ,  H04W72/04

CPC classification number: H04L5/0035 ,  H04B7/0417 ,  H04B17/11 ,  H04B17/364 ,  H04L1/0026 ,  H04W24/08 ,  H04W56/00 ,  H04W56/001 ,  H04W72/0413

Abstract: The embodiment of the present invention discloses a method, a system and an apparatus for calibrating deviation among multiple access points, which are used for solving a problem that information received by a user equipment (UE) is not synchronous, caused when different access points send data to the UE at the same time, and improving system performance and frequency spectrum efficiency. The method for calibrating deviation among multiple access points comprises the following steps: in step A: a base station sending to a UE a message instructing the UE to perform measurement and return deviation calibration information among the multiple access points (S101); and in step B: the base station calibrating the deviation among the multiple access points based on the deviation calibration information among the multiple access points returned by the UE (S102).

Abstract translation: 本发明的实施例公开了一种用于校准多个接入点之间的偏差的方法，系统和装置，其用于解决当不同接入点发送时由用户设备（UE）接收的信息不同步的问题 同时向UE提供数据，提高系统性能和频谱效率。 用于校准多个接入点之间的偏差的方法包括以下步骤：步骤A：基站向UE发送指示UE在多个接入点之间执行测量的消息和返回偏差校准信息（S101）; 并且在步骤B中：基站基于UE返回的多个接入点之间的偏差校准信息来校准多个接入点之间的偏差（S102）。