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    Transmission method and apparatus based on point-to-point wireless communication
    2.
    发明授权
    Transmission method and apparatus based on point-to-point wireless communication 有权

    公开(公告)号：US09769830B2

    公开(公告)日：2017-09-19

    申请号：US14389280

    申请日：2012-04-16

    申请人： Ning Yang ,  Qiuyan Lu ,  Yucong Chen

    发明人： Ning Yang ,  Qiuyan Lu ,  Yucong Chen

    IPC分类号： H04W72/04 ,  H04W88/00 ,  H04W8/18 ,  H04L5/00 ,  H04L27/20 ,  H04L1/16

    CPC分类号： H04W72/048 ,  H04L1/16 ,  H04L5/0055 ,  H04L27/20 ,  H04W8/18 ,  H04W56/0085 ,  H04W88/00

    摘要： The disclosure discloses a transmission method and a transmission apparatus based on point-to-point wireless communication. The method includes that: a state machine of a sending-receiving terminal performs state transition according to a received training frame; and when the state machine of the sending-receiving terminal is transferred to a data frame sending state, user data is sent. According to the disclosure, the sending-receiving terminal sends a preset training frame in a synchronous linking process so as to promote the rapid linking of two peer nodes; the saved linking time is spent to send data so as to increase the throughput of the user data; due to the state transition of the state machine, a receiver can determine the arrival time of a data frame, thereby improving the stability and the reliability of the system; and moreover, the training of the training frame can ensure that a receiver decodes a first data frame successfully, so that the flow of judging whether the received data is the user data by the receiver is simplified and the efficiency is improved.

    Method and apparatus for accessing channel in WLAN system
    4.
    发明授权
    Method and apparatus for accessing channel in WLAN system 有权
    WLAN系统中接入信道的方法和装置

    公开(公告)号：US09426764B2

    公开(公告)日：2016-08-23

    申请号：US14377445

    申请日：2013-02-12

    申请人： LG Electronics Inc.

    发明人： Yongho Seok

    IPC分类号： H04W56/00 ,  H04W72/04 ,  H04L7/00 ,  H04W84/12 ,  H04W52/02

    CPC分类号： H04W56/0015 ,  H04L7/0008 ,  H04W4/70 ,  H04W52/0216 ,  H04W56/0085 ,  H04W72/044 ,  H04W72/0446 ,  H04W84/12 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/124 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/168 ,  Y02D70/21 ,  Y02D70/22

    摘要： The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for accessing a channel in a WLAN system. A method for synchronizing channels from a station (STA) in the wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving from an access point (AP) setting information with respect to an least one slot allowing channel access by the STA; receiving a synchronization frame from the AP from a slot boundary of the at least one slot; and synchronizing the channels on the basis of the synchronization frame, wherein the synchronization frame may be a null data packet (NDP) frame.

    摘要翻译： 无线通信系统技术领域本发明涉及一种无线通信系统，更具体地说，本发明涉及一种在WLAN系统中访问信道的方法和装置。 根据本发明的一个实施例，一种用于在来自无线通信系统中的站（STA）的同步信道的方法包括以下步骤：从接入点（AP）接收关于至少一个允许信道的时隙的信息 由STA访问; 从所述AP接收来自所述至少一个时隙的时隙边界的同步帧; 以及基于所述同步帧同步所述信道，其中所述同步帧可以是空数据分组（NDP）帧。

    Synchronization of a radio device
    6.
    发明授权
    Synchronization of a radio device 有权
    无线电设备的同步

    公开(公告)号：US09277521B2

    公开(公告)日：2016-03-01

    申请号：US14098588

    申请日：2013-12-06

    申请人： Telefonaktiebolaget L M Ericsson (publ)

    发明人： Sajal Kumar Das ,  Pankaj Jaiswal

    IPC分类号： H04J3/06 ,  H04W56/00

    CPC分类号： H04W56/0085 ,  H04W56/0015 ,  H04W56/0035

    摘要： The present disclosure relates to a method for synchronizing a radio device with a network node of a Global System for Mobile Communications, GSM, radio communication system. The method comprises obtaining a reference array based on a known training sequence, TSC, of a synchronization burst, SB, of a synchronization channel, SCH, of the network node. The method also comprises receiving an SB including the TSC from the network node and forming a received array. The method also comprises comparing the reference array to the received array for finding a sequence of the received array which has identity with the reference array, and thereby finding the position of the TSC in the received SB. The method also comprises determining whether the identity of the found sequence with the reference array is above a predefined threshold, in which case the radio device can be time synchronized based on the found TSC.

    摘要翻译： 本公开涉及一种用于使无线电设备与全球移动通信系统（GSM）无线电通信系统的网络节点同步的方法。 该方法包括基于网络节点的同步信道SCH的同步脉冲串S S的已知训练序列TSC获得参考阵列。 该方法还包括从网络节点接收包括TSC的SB并形成接收的阵列。 该方法还包括将参考阵列与接收的阵列进行比较，以便找到与参考阵列具有一致性的接收阵列的序列，从而找到接收的SB中的TSC的位置。 该方法还包括确定所查找到的序列与参考阵列的身份是否高于预定阈值，在这种情况下，无线电设备可以基于所找到的TSC进行时间同步。

    Data communication system, method of optimizing preamble length, and communication apparatus
    8.
    发明授权
    Data communication system, method of optimizing preamble length, and communication apparatus 有权
    数据通信系统，优化前导码长度的方法以及通信装置

    公开(公告)号：US09094911B2

    公开(公告)日：2015-07-28

    申请号：US13545977

    申请日：2012-07-10

    申请人： Hitoshi Tanaka

    发明人： Hitoshi Tanaka

    IPC分类号： H04L7/00 ,  H04W56/00 ,  H04W28/06

    CPC分类号： H04W56/0085 ,  H04W28/06

    摘要： A frame is effectively transmitted and received by setting an optimal preamble length according to transmission environments between communication apparatuses. A data communication system includes a synchronization detection part to detect bit synchronization based on the preamble of the frame received to the second communication apparatus from the first communication apparatus, a synchronization position information generating part to generate synchronization position information of a position of the bit synchronization, which is in the frame received in the second communication apparatus, detected by the synchronization detection part, a preamble length calculating part to calculate an optimal value of a length of the preamble based on the synchronization position information, and a transmit command issuing part to issue a transmit command of transmission of the frame including the preamble having the length based on the optimal value from the first communication apparatus to the second communication apparatus.

    摘要翻译： 通过根据通信设备之间的传输环境设置最佳前导码长度来有效地发送和接收帧。 数据通信系统包括：同步检测部，其基于从第一通信装置接收到的第二通信装置的帧的前导码来检测比特同步;同步位置信息生成部，生成比特同步的位置的同步位置信息 在由同步检测部检测到的在第二通信装置中接收的帧中，基于同步位置信息计算前导码的长度的最佳值的前导码长度计算部，以及发送命令发布部， 基于最佳值从第一通信装置向第二通信装置发出包括具有长度的前导码的帧的发送发送命令。

    Systems and methods for detecting secondary synchronization signals in a wireless communication system
    9.
    发明授权
    Systems and methods for detecting secondary synchronization signals in a wireless communication system 有权
    用于在无线通信系统中检测次同步信号的系统和方法

    公开(公告)号：US09065630B1

    公开(公告)日：2015-06-23

    申请号：US14027894

    申请日：2013-09-16

    申请人： Marvell International Ltd.

    发明人： Chusong Xiao ,  Qing Zhao ,  Manyuan Shen ,  Leilei Song ,  Hui-Ling Lou

    IPC分类号： H04J3/06 ,  H04L7/04

    CPC分类号： H04L7/042 ,  H04W56/0085

    摘要： Systems and methods are provided for detecting a received synchronization signal. The method includes receiving, at a receiver, a signal from a transmitter, where one or more portions of the received signal include the received synchronization signal. The method includes processing the one or more portions of the received signal to obtain a differential signal, and processing the differential signal and a plurality of candidate differential synchronization signals to obtain a plurality of cross-correlation signals. Each candidate differential synchronization signal is associated with one cross-correlation signal. The method includes selecting, based at least in part on the plurality of cross-correlation signals, one of the candidate differential synchronization signals, and detecting the received synchronization signal based at least in part on (i) the one or more portions of the received signal, and (ii) a frequency offset value obtained from the cross-correlation signal associated with the selected candidate differential synchronization signal.

    摘要翻译： 提供了用于检测所接收的同步信号的系统和方法。 该方法包括在接收机处接收来自发射机的信号，其中接收信号的一个或多个部分包括所接收的同步信号。 该方法包括处理接收信号的一个或多个部分以获得差分信号，以及处理差分信号和多个候选差分同步信号以获得多个互相关信号。 每个候选差分同步信号与一个互相关信号相关联。 该方法至少部分地基于多个互相关信号来选择候选差分同步信号中的一个，并且至少部分地基于（i）所接收的一个或多个部分来检测所接收的同步信号 信号，以及（ii）从与所选候选差分同步信号相关联的互相关信号获得的频率偏移值。

    Method and apparatus of transmitting and receiving synchronization signal in a distributed antenna system
    10.
    发明授权
    Method and apparatus of transmitting and receiving synchronization signal in a distributed antenna system 有权
    在分布式天线系统中发送和接收同步信号的方法和装置

    公开(公告)号：US09025524B2

    公开(公告)日：2015-05-05

    申请号：US13581890

    申请日：2011-03-10

    申请人： Hyun Woo Lee ,  Han Gyu Cho ,  Seung Hee Han

    发明人： Hyun Woo Lee ,  Han Gyu Cho ,  Seung Hee Han

    IPC分类号： H04W56/00 ,  H04B7/02

    CPC分类号： H04W56/0085 ,  H04B7/022 ,  H04W56/001 ,  H04W56/0015

    摘要： A method and apparatus of transmitting and receiving a synchronization signal in a distributed antenna system (DAS) is disclosed. A method of receiving a synchronization signal in a mobile station of a distributed antenna system (DAS) comprises receiving a primary preamble from a base station through one of a plurality of distributed antennas, which is previously defined; and acquiring first synchronization using the primary preamble.

    摘要翻译： 公开了一种在分布式天线系统（DAS）中发送和接收同步信号的方法和装置。 一种在分布式天线系统（DAS）的移动台中接收同步信号的方法包括通过预先定义的多个分布式天线之一从基站接收主要前置码; 以及使用所述主前同步码获取第一同步。