公开(公告)号：US20160335430A1

公开(公告)日：2016-11-17

申请号：US15218985

申请日：2016-07-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hongbin Zhou ,  Xiang Zhang

IPC: G06F21/52

CPC classification number: G06F21/52

Abstract: An apparatus and a method for detecting a buffer overflow attack, and a security protection system. The apparatus for detecting a buffer overflow attack includes a memory storing instructions, a processor configured to execute the instructions stored in the memory to obtain external input data for a target process, determine that the target process decodes the external input data, detect attack code on the decoded external input data, wherein the attack code is a code used for performing an overflow attack on a buffer, where the apparatus or the method facilitates detection of attack code from the data obtained by decoding, and may improve a detection rate of the attack code.

Abstract translation: 用于检测缓冲器溢出攻击的装置和方法，以及安全保护系统。 用于检测缓冲器溢出攻击的装置包括存储指令的存储器，被配置为执行存储在存储器中的指令以获得目标处理的外部输入数据的处理器，确定目标处理解码外部输入数据，检测攻击码 解码的外部输入数据，其中所述攻击码是用于对缓冲器执行溢出攻击的代码，其中所述装置或所述方法有助于从通过解码获得的数据检测攻击码，并且可以提高攻击的检测率 码。

公开(公告)号：US08787508B2

公开(公告)日：2014-07-22

申请号：US13914048

申请日：2013-06-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Guangliang Ren ,  Lihua Yang ,  Hongbin Zhou ,  Hui Zhang

IPC: H03D1/04

CPC classification number: H04L25/0204 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/1469 ,  H04L25/022 ,  H04L25/0222 ,  H04L25/0234

Abstract: A channel estimation method and apparatus are provided. The channel estimation method includes: extracting pilot data in a received signal; performing pilot channel estimation by using the extracted pilot data to obtain transmission coefficients of multiple groups of pilot channels; and obtaining a transmission coefficient of a data channel through non-linear interpolation processing by using the obtained transmission coefficients of the multiple groups of pilot channels. Solutions provided in the embodiments of the present invention help improve the channel estimation precision in a fast time-changing channel environment, thereby improving the system performance.

Abstract translation: 提供了一种信道估计方法和装置。 信道估计方法包括：提取接收信号中的导频数据; 通过使用所提取的导频数据来执行导频信道估计，以获得多组导频信道的传输系数; 以及通过使用所获得的多组导频信道的传输系数，通过非线性插值处理来获得数据信道的传输系数。 在本发明的实施例中提供的解决方案有助于改善快速时变通道环境中的信道估计精度，从而提高系统性能。

公开(公告)号：US20130343499A1

公开(公告)日：2013-12-26

申请号：US13914048

申请日：2013-06-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Guangliang Ren ,  Lihua Yang ,  Hongbin Zhou ,  Hui Zhang

IPC: H04L25/02

CPC classification number: H04L25/0204 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/1469 ,  H04L25/022 ,  H04L25/0222 ,  H04L25/0234

Abstract: A channel estimation method and apparatus are provided. The channel estimation method includes: extracting pilot data in a received signal; performing pilot channel estimation by using the extracted pilot data to obtain transmission coefficients of multiple groups of pilot channels; and obtaining a transmission coefficient of a data channel through non-linear interpolation processing by using the obtained transmission coefficients of the multiple groups of pilot channels. Solutions provided in the embodiments of the present invention help improve the channel estimation precision in a fast time-changing channel environment, thereby improving the system performance.

Abstract translation: 提供了一种信道估计方法和装置。 信道估计方法包括：提取接收信号中的导频数据; 通过使用所提取的导频数据来执行导频信道估计，以获得多组导频信道的传输系数; 以及通过使用所获得的多组导频信道的传输系数，通过非线性插值处理来获得数据信道的传输系数。 在本发明的实施例中提供的解决方案有助于改善快速时变通道环境中的信道估计精度，从而提高系统性能。