公开(公告)号：US20170163464A1

公开(公告)日：2017-06-08

申请号：US15436421

申请日：2017-02-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaoyue HE ,  Jianhua LIU ,  Fanglin SUN ,  Quanbo ZHAO

IPC: H04L27/34 ,  H04L1/00

CPC classification number: H04L27/3416 ,  H04L1/0054 ,  H04L27/3411

Abstract: Disclosed are a digital modulation method and apparatus. The digital modulation method includes: determining to-be-moved constellation points in a rectangular constellation diagram, where constellation points in the rectangular constellation diagram are distributed at corresponding coordinate points in a plane rectangular coordinate system, the to-be-moved constellation points include S columns of constellation points, in four quadrants of the plane rectangular coordinate system, and the rectangular constellation diagram is a constellation diagram generated by performing quadrature amplitude modulation (QAM) on a data bit stream; dividing to-be-moved constellation points in each of the four quadrants into two constellation point sets according to a bisector of an area between a horizontal coordinate axis and a straight line corresponding to a maximum absolute value of vertical coordinates in the rectangular constellation diagram; and horizontally moving and vertically moving each constellation point set in the four quadrants, to obtain a cross-shaped constellation diagram.

公开(公告)号：US20140133494A1

公开(公告)日：2014-05-15

申请号：US14078235

申请日：2013-11-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haixiang LIANG ,  Dao PAN ,  Xiaofeng ZHANG ,  Fanglin SUN ,  Quanbo ZHAO

IPC: H04L12/18 ,  H04L27/26

CPC classification number: H04L12/18 ,  H04L5/0046 ,  H04L27/2646 ,  H04W4/06 ,  H04W4/08 ,  H04W28/06 ,  H04W28/18 ,  H04W72/005 ,  H04W72/02

Abstract: Embodiments of the present invention provide a method, an apparatus, and a system for multiple access. The method includes: receiving, by a network device, a data packet, where the data packet includes identifier information about a terminal; querying, according to the identifier information about the terminal, a correspondence table between identifier information about a terminal and a broadcast channel, and determining a broadcast channel corresponding to the identifier information about the terminal, where the determined broadcast channel is a broadcast channel among a plurality of preset broadcast channels, and the terminal is any terminal in a terminal group corresponding to the determined broadcast channel; and sending, according to the identifier information about the terminal, through the determined broadcast channel, the data packet to the terminal.

Abstract translation: 本发明的实施例提供了一种用于多次访问的方法，装置和系统。 该方法包括：由网络设备接收数据分组，其中所述数据分组包括关于终端的标识符信息; 根据关于终端的标识符信息查询关于终端的标识符信息与广播信道之间的对应表，以及确定与关于终端的标识符信息相对应的广播信道，其中所确定的广播信道是广播信道之一 多个预设广播频道，终端是对应于所确定的广播频道的终端组中的任何终端; 并且根据关于终端的标识符信息，通过确定的广播信道将数据分组发送到终端。