公开(公告)号：US10911960B2

公开(公告)日：2021-02-02

申请号：US16579845

申请日：2019-09-24

Applicant: Sony Corporation

Inventor： Qimei Cui ,  Jiahui Liu ,  Xiang Zhou ,  Xiaofeng Tao

IPC: H04W28/02 ,  H04W16/10 ,  H04W74/08 ,  H04W16/14 ,  H04W24/10 ,  H04W28/08 ,  H04W28/26 ,  H04W72/04 ,  H04W84/04

Abstract: A frequency allocation method and device for an unauthorized frequency band. The method includes: a controller acquires a business load status of plural macro base stations having similar coverage ranges and operated by different operators, and generates, based on the business load status, allocation information about an unauthorized frequency band, to mutually exclusively allocate the unauthorized frequency band to plural macro base stations; the macro base stations receive the allocation information about the unauthorized frequency band, to determine the unauthorized frequency band monopolized by the macro base stations from an unauthorized frequency band resource, and generate indicative information about the monopolized unauthorized frequency band; and a small base station receives the indicative information, detects state of the unauthorized frequency band monopolized by the macro base stations, and dynamically accesses, according to a detecting result, a specific unauthorized frequency band in the unauthorized frequency band monopolized by the macro base stations.

公开(公告)号：US10727962B2

公开(公告)日：2020-07-28

申请号：US16075246

申请日：2017-02-03

Applicant: Sony Corporation

Inventor： Qimei Cui ,  Haowei Wang ,  Xiaofeng Tao ,  Bingshan Hu

IPC: H04B17/382 ,  H04B17/391 ,  H04W72/12 ,  H04W74/08

Abstract: Disclosed are an electronic device in a wireless communication system, and a wireless communication method. The wireless communication system comprises multiple unlicensed carriers. The electronic device comprises: one or more processing circuits configured to: configure each of a plurality of unlicensed carriers to be a primary channel or a secondary channel, so as to obtain at least two primary channels and at least one secondary channel; perform a first channel detection process over each of the primary channels to detect whether each of the primary channels is idle, and perform a second channel detection process over each of the secondary channels to detect whether each of the secondary channels is idle; and perform downlink data transmission over the primary channel determined to be idle by means of the channel detection or over the primary and secondary channels determined to be idle by means of the channel detection. By utilizing the electronic device and the wireless communication method, the probability of access to an unlicensed carrier is improved.

公开(公告)号：US20160119049A1

公开(公告)日：2016-04-28

申请号：US14987471

申请日：2016-01-04

Applicant: SONY CORPORATION

Inventor： Qimei Cui ,  Shiyuan Li ,  Xiaofeng Tao ,  Chao Wang ,  Xianjun Yang

IPC: H04B7/06 ,  H04W76/02

CPC classification number: H04B7/0639 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0478 ,  H04L1/0026 ,  H04W72/042 ,  H04W76/15

Abstract: A codebook based channel information feedback method, device and system are provided in the present invention. The codebook based channel information feedback method includes: measuring, by a terminal in a communication system, a parameter of a downlink channel between the terminal and a base station of the communication system; selecting a plurality of precoding matrixes from a precoding codebook by using the parameter of the downlink channel, wherein a plurality of the precoding matrixes can be used by both of single-user multi-input multi-output (MIMO) transport mode and multi-user MIMO transport mode, and the precoding codebook is an aggregation of precoding matrixes; and feeding back a first information for indicating a plurality of the precoding matrixes to the base station.