公开(公告)号：US20070036207A1

公开(公告)日：2007-02-15

申请号：US11584058

申请日：2006-10-20

Applicant: Xianbin Wang

Inventor： Xianbin Wang

IPC: H04L5/16

CPC classification number: H04L5/0064 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/0062 ,  H04M3/007 ,  H04M3/18 ,  H04M11/062

Abstract: To optimize the performance of DSL modems in the same cable bundle, the size and position of the group of subcarriers used for transmission is intelligently selected when the bit rate necessary for making the transmission is less than the total available bandwidth provided by all subcarriers. By intelligently selecting a minimum number of subcarriers for Digital Multi-tone (DMT) signal transmission, a reduction in line driver power consumption is effectuated. Additionally, by intelligently selecting the position of the groups of subcarriers within the total available subcarriers, near-end crosstalk (NEXT) noise within the cable bundle may be minimized.

Abstract translation: 为了优化同一电缆束中的DSL调制解调器的性能，当进行传输所需的比特率小于由所有子载波提供的总可用带宽时，用于传输的子载波组的大小和位置被智能地选择。 通过智能地选择用于数字多音（DMT）信号传输的最小数量的子载波，实现了线路驱动器功耗的降低。 另外，通过智能地选择总可用子载波内的子载波组的位置，电缆束内的近端串扰（NEXT）噪声可以被最小化。

公开(公告)号：US20070019681A1

公开(公告)日：2007-01-25

申请号：US11511623

申请日：2006-08-29

Applicant: Xianbin Wang

Inventor： Xianbin Wang

IPC: H04J1/02

CPC classification number: H04L5/143 ,  H04L5/023

Abstract: To improve the performance of DSL modems, a DSL duplexing ratio for a new communication is selected according to the communications needs of an application. A required upstream and downstream bit rate for application communications is determined. From the ratio of these bit rates, a desired duplexing ratio is calculated. The operation of the modem is then adapted to choose a duplexing ratio that approximates the desired duplexing ratio for the application. To optimize modem operation, the size and position of the upstream and downstream bandwidths used for transmission are intelligently selected when the bit rate necessary for making the transmission is less than the total available bandwidth provided by the chosen duplexing ratio. By intelligently selecting a minimum number of subcarriers for Digital Multi-tone (DMT) signal transmission, a reduction in line driver power consumption is effectuated. Additionally, by intelligently selecting the position of the used bandwidth within the total available bandwidth, near-end crosstalk (NEXT) noise may be minimized.

Abstract translation: 为了提高DSL调制解调器的性能，根据应用的通信需要选择新通信的DSL双工比。 确定应用通信所需的上行和下行比特率。 根据这些比特率的比率，计算期望的双工比。 调制解调器的操作然后适于选择近似于应用的期望双工比的双工比率。 为了优化调制解调器操作，当用于进行传输所需的比特率小于由选择的双工比提供的总可用带宽时，用于传输的上行和下行带宽的大小和位置被智能地选择。 通过智能地选择用于数字多音（DMT）信号传输的最小数量的子载波，实现了线路驱动器功耗的降低。 此外，通过智能地选择所使用的带宽在总可用带宽内的位置，近端串扰（NEXT）噪声可能被最小化。

公开(公告)号：US07126984B2

公开(公告)日：2006-10-24

申请号：US10029190

申请日：2001-12-19

Applicant: Xianbin Wang

Inventor： Xianbin Wang

IPC: H04B1/38

CPC classification number: H04L5/0064 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/0062 ,  H04M3/007 ,  H04M3/18 ,  H04M11/062

Abstract: To optimize the performance of DSL modems in the same cable bundle, the size and position of the bandwidth used for transmission is intelligently selected when the bit rate necessary for making the transmission is less than the total available bandwidth. By intelligently selecting a minimum number of subcarriers for Digital Multi-tone (DMT) signal transmission, a reduction in line driver power consumption is effectuated. Additionally, by intelligently selecting the position of the used bandwidth within the total available bandwidth, near-end crosstalk (NEXT) noise within the cable bundle may be minimized.

公开(公告)号：US20050068886A1

公开(公告)日：2005-03-31

申请号：US10951761

申请日：2004-09-29

Applicant: Xianbin Wang ,  Yiyan Wu

Inventor： Xianbin Wang ,  Yiyan Wu

IPC: H04J1/00 ,  H04J11/00 ,  H04L25/03 ,  H04L27/26

CPC classification number: H04L27/2607 ,  H04L2025/03414 ,  H04L2025/03522

Abstract: A method and system for communication of information in OFDM format are disclosed. The method employs multi-symbol encapsulation (MSE), wherein multiple OFDM symbols are grouped together in cyclic frames having a single cyclic guard portion, for example a cyclic prefix, with multiple OFDM symbols sandwiched between each two consecutive cyclic guard portions. All OFDM symbols of one frame are equalized together at the receiver in a frequency domain using a single DFT/IDFT operation sequence. Embodiments of the MSE OFDM system are disclosed enabling high bandwidth efficiency, high tolerance to carrier frequency offset and low peak-to-average power ratio.

Abstract translation: 公开了一种以OFDM格式进行信息通信的方法和系统。 该方法采用多符号封装（MSE），其中多个OFDM符号被分组在具有单个循环保护部分的循环帧中，例如循环前缀，其中多个OFDM符号被夹在每两个连续循环保护部分之间。 使用单个DFT / IDFT操作序列，一个帧的所有OFDM符号在接收机处一起在频域上均衡。 公开了MSE OFDM系统的实施例，其实现了高带宽效率，对载波频率偏移的高容差以及低峰值与平均功率比。

公开(公告)号：US11570061B2

公开(公告)日：2023-01-31

申请号：US16729357

申请日：2019-12-28

Applicant: Tianqi Yu ,  Xianbin Wang

Inventor： Tianqi Yu ,  Xianbin Wang

IPC: H04L45/02 ,  H04L41/12 ,  H04L9/40 ,  H04L41/0803 ,  H04L41/22 ,  H04L41/0893

Abstract: The present invention discloses the method and apparatus for topology discovery enabled intrusion detection. In information and communications technology (ICT) systems, end devices are organized into subnets that are communicated with the system center through the multi-service gateways. Any intrusion can incur the variations of the communications environments and the subnet topologies. The potential external intruding devices are detected by the varied communications environments and identified by the difference between the original and new subnet topologies constructed by the topology discovery method. The information of potential external intruding devices is sent to the system center for device authentication. If passed, the device is kept associated and the system topology is updated with the newly discovered subnet topology. If failed, the device is enforced to disassociate, and an enhanced secure mode is triggered where the messages communicated over the intruded subnet are encrypted.

公开(公告)号：US20200015234A1

公开(公告)日：2020-01-09

申请号：US16029907

申请日：2018-07-09

Applicant: Hao Li ,  Xianbin Wang ,  Kwok Shum Au ,  Osama Aboul-Magd ,  Jung Hoon Suh

Inventor： Hao Li ,  Xianbin Wang ,  Kwok Shum Au ,  Osama Aboul-Magd ,  Jung Hoon Suh

IPC: H04W72/04

Abstract: Methods and systems for scheduling successive transmissions in a wireless local area network (WLAN). An Access Point (AP) can generate a control signal that includes an identifier field for indicating that previous resource allocation from a previous transmission is to be repeated, and therefore the control signal itself does not contain resource allocation information. One or more stations (STAs) can receive the control signal and can use the previous resource allocation information stored in their respective memory to perform the transmission. The resource allocation can include three-dimensional (3D) resource allocation, which refers to time, frequency and space-domain multiplexing. Because the control signal has the identifier field, the AP can reduce network load and free resources for payload data or other traffic.

公开(公告)号：US20200014506A1

公开(公告)日：2020-01-09

申请号：US16030131

申请日：2018-07-09

Applicant: Hao Li ,  Xianbin Wang ,  Kwok Shum Au ,  Osama Aboul-Magd ,  Jung Hoon Suh

Inventor： Hao Li ,  Xianbin Wang ,  Kwok Shum Au ,  Osama Aboul-Magd ,  Jung Hoon Suh

IPC: H04L5/00 ,  H04B1/707 ,  H04L27/26 ,  H04W52/02 ,  H04W52/50

Abstract: Methods and systems that enable payload data to be spread over a number of a plurality of sub-carriers for wireless transmissions between Access Points (AP) and stations (STA) in a WLAN. The AP receives each STA's status information, and controls an amount of spreading of the payload data that can flexibly and variably takes into account the desired amount of peak power consumption, the required data rate, and the channel conditions. Based on these factors, the AP determines a number of sub-carriers for each STA that will be used to carry the spread payload data. Example embodiments can address high power peak consumption, data rate inflexibility and inefficient spectrum communication as found in conventional wireless systems.

公开(公告)号：US08823589B2

公开(公告)日：2014-09-02

申请号：US13044233

申请日：2011-03-09

Applicant: Xianbin Wang

Inventor： Xianbin Wang

IPC: G01S3/02 ,  G01S5/02 ,  H04W64/00 ,  G01S5/14 ,  G01S5/06

CPC classification number: G01S5/0242 ,  G01S5/06 ,  G01S5/14 ,  H04W64/00

Abstract: The present invention is an integrated wireless system with multiple functionalities including robust (indoor/outdoor) position location, mobile receiver tracking and adaptive broadband communication. The present invention may be an adaptive position location system for local and indoor applications with improved accuracy, flexibility and security. The self-calibration technique of the present invention may cause, the position location system to be easily deployed. A master station may communicate with and control two or more slave stations and one or more user devices and thereby determine the position of a user device and track that user device, utilizing location reference sets, in accordance with the location of the master station and communication between the slave stations and the master station. The locationing operation of the present invention may be initiated by the user device.

Abstract translation: 本发明是具有多个功能的集成无线系统，包括稳健（室内/室外）位置定位，移动接收机跟踪和自适应宽带通信。 本发明可以是用于本地和室内应用的自适应位置定位系统，其具有改进的准确性，灵活性和安全性。 本发明的自校准技术可能导致位置定位系统易于部署。 主站可以与两个或多个从站和一个或多个用户设备进行通信并且控制一个或多个用户设备，从而根据主站和通信的位置来确定用户设备的位置并跟踪该用户设备利用位置参考集 从站和主站之间。 本发明的定位操作可以由用户设备启动。

公开(公告)号：US08467482B2

公开(公告)日：2013-06-18

申请号：US12753255

申请日：2010-04-02

Applicant: Sung-Ik Park ,  Heung-Mook Kim ,  Md. Jahidur Rahman ,  Xianbin Wang

Inventor： Sung-Ik Park ,  Heung-Mook Kim ,  Md. Jahidur Rahman ,  Xianbin Wang

IPC: H03D1/00

CPC classification number: H04H20/30 ,  H04H40/18 ,  H04H60/37 ,  H04H60/74

Abstract: A method for identifying a transmitter in a digital broadcasting system includes: receiving a broadcast signal in which a TxID sequence for identification of a transmitter is embedded; correlating the received broadcast signal with a plurality of elementary code sequences of a pseudo-random sequence sequentially; and identifying the transmitter by using the correlation results.

Abstract translation: 一种用于识别数字广播系统中的发射机的方法包括：接收广播信号，其中嵌入用于识别发射机的TxID序列; 将所接收的广播信号与伪随机序列的多个基本码序列顺序相关; 并通过使用相关结果识别发射机。

公开(公告)号：US20110221635A1

公开(公告)日：2011-09-15

申请号：US13044233

申请日：2011-03-09

Applicant: Xianbin Wang

Inventor： Xianbin Wang

IPC: G01S5/02

CPC classification number: G01S5/0242 ,  G01S5/06 ,  G01S5/14 ,  H04W64/00

Abstract: The present invention is an integrated wireless system with multiple functionalities including robust (indoor/outdoor) position location, mobile receiver tracking and adaptive broadband communication. The present invention may be an adaptive position location system for local and indoor applications with improved accuracy, flexibility and security. The self-calibration technique of the present invention may cause, the position location system to be easily deployed. A master station may communicate with and control two or more slave stations and one or more user devices and thereby determine the position of a user device and track that user device, utilizing location reference sets, in accordance with the location of the master station and communication between the slave stations and the master station. The locationing operation of the present invention may be initiated by the user device.

Abstract translation: 本发明是具有多个功能的集成无线系统，包括稳健（室内/室外）位置定位，移动接收机跟踪和自适应宽带通信。 本发明可以是用于本地和室内应用的自适应位置定位系统，其具有改进的准确性，灵活性和安全性。 本发明的自校准技术可能导致位置定位系统易于部署。 主站可以与两个或多个从站和一个或多个用户设备进行通信并且控制一个或多个用户设备，从而根据主站和通信的位置来确定用户设备的位置并跟踪该用户设备利用位置参考集 从站和主站之间。 本发明的定位操作可以由用户设备启动。