中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

22 records (took 0.021 seconds)

    Encryption method, decryption method, and related apparatus
    12.
    发明授权
    Encryption method, decryption method, and related apparatus 有权

    公开(公告)号：US10771966B2

    公开(公告)日：2020-09-08

    申请号：US15965854

    申请日：2018-04-28

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Lijia Zhang ,  Jing Chen

    IPC: G06F21/00 ,  H04W12/04 ,  H04L29/06 ,  H04W12/02 ,  H04L9/12 ,  H04L9/06 ,  H04W4/70

    Abstract: In order to provide confidentiality protection, an encryption method, a decryption method, and related apparatuses are provided. An encryption device generates a first initial layer-3 message. The first initial layer-3 message includes a first part and a second part. The device generates a keystream for encrypting the first initial layer-3 message. The device performs an exclusive OR operation on the keystream and the first initial layer-3 message to generate a second initial layer-3 message. The second initial layer-3 message includes an encrypted first part of the first initial layer-3 message, an unencrypted second part of the first initial layer-3 message, and an encryption indication indicating that the first part of the first initial layer-3 message is encrypted. The device transmits the second initial layer-3 message to a network device. Small data comprised in the second initial layer-3 message is protected by the encryption.

    Decoding method and decoder
    13.
    发明授权
    Decoding method and decoder 有权

    公开(公告)号：US09729276B2

    公开(公告)日：2017-08-08

    申请号：US14954248

    申请日：2015-11-30

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Lijia Zhang ,  Yuanda Huang

    IPC: H04L1/00 ,  H03M13/25

    CPC classification number: H04L1/0054 ,  H03M13/256 ,  H04L1/0052 ,  H04L1/006

    Abstract: Embodiments of the present invention relate to the field of communications, and provide a decoding method and a decoder, which are used to reduce decoding complexity. The method includes: receiving a to-be-decoded signal; performing region decision on the to-be-decoded signal according to a region decision rule formed by S region decision formulas, to acquire a region decision result; acquiring N constellation points according to the decision result, where the N constellation points are separately constellation points that are in the N subsets and that are closest to the to-be-decoded signal; acquiring N non-encoded bits corresponding to the N constellation points, and branch metrics between the to-be-decoded signal and the N constellation points; and performing Viterbi decoding based on the branch metrics and the N non-encoded bits, and outputting a decoding result corresponding to the to-be-decoded signal. The present invention is applicable to a signal decoding scenario.

    Method for protecting security of data, network entity and communication terminal
    14.
    发明授权
    Method for protecting security of data, network entity and communication terminal 有权
    保护数据，网络实体和通信终端安全的方法

    公开(公告)号：US09189632B2

    公开(公告)日：2015-11-17

    申请号：US13943469

    申请日：2013-07-16

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Lijia Zhang ,  Yixian Xu ,  Jing Chen

    IPC: H04L29/06 ,  G06F21/60 ,  H04W12/04 ,  H04W12/06 ,  H04W4/00

    CPC classification number: G06F21/60 ,  H04L63/205 ,  H04W4/70 ,  H04W12/04 ,  H04W12/06

    Abstract: The present invention relates to communication technologies and discloses a method and an apparatus for protecting security of data, so as to solve the problem of the prior art in which the security of data transmission between a communication terminal which has a characteristic of small data transmission and the network cannot be guaranteed. Information relevant to security context is stored if a communication terminal has a characteristic of small data transmission; current security context is obtained according to the information relevant to security context; and security protection of communication data is performed by employing the current security context. The embodiments of the present invention may be applied to a communication system having a characteristic of small data transmission, such as an MTC and the like.

    Abstract translation: 本发明涉及通信技术，并且公开了一种用于保护数据安全性的方法和装置，以解决现有技术的问题，其中具有小数据传输特性的通信终端与数据传输特性之间的数据传输安全性 网络无法保证。 如果通信终端具有小数据传输的特征，则存储与安全上下文相关的信息; 根据与安全环境相关的信息获取当前的安全上下文; 并且通过采用当前的安全上下文来执行通信数据的安全保护。 本发明的实施例可以应用于具有小数据传输特性的通信系统，例如MTC等。

    Method and apparatus for authenticating communication device
    15.
    发明授权
    Method and apparatus for authenticating communication device 有权
    用于认证通信设备的方法和装置

    公开(公告)号：US08706085B2

    公开(公告)日：2014-04-22

    申请号：US13649540

    申请日：2012-10-11

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Lijia Zhang ,  Yixian Xu ,  Yingxin Huang ,  Xiaohan Liu ,  Meriau Laurence

    IPC: H04M1/66

    CPC classification number: H04L63/08 ,  H04L63/0884 ,  H04L2463/061 ,  H04W4/08 ,  H04W4/70 ,  H04W8/186 ,  H04W12/04 ,  H04W12/06

    Abstract: Embodiments of the present invention disclose a method and an apparatus for authenticating a communication device, where the method includes: receiving an attach request including a group identifier and sent by an MTC device to be authenticated, where the group identifier is a group identifier of an MTC group where the MTC device to be authenticated is located; determining whether a first group authentication vector bound to the group identifier exists locally, where the first group authentication vector is an authentication vector used for authenticating MTC devices in the MTC group; and if existing, according to the first group authentication vector, authenticating the MTC device to be authenticated, and generating a system key of the MTC device to be authenticated. The technical solutions provided in the present invention can be applied to the technical field of authenticating the MTC device.

    Abstract translation: 本发明的实施例公开了一种用于认证通信设备的方法和装置，其中，所述方法包括：接收包括组标识符的附加请求，并由要被认证的MTC设备发送，其中所述组标识符是组识别符 要认证的MTC设备所在的MTC组; 确定绑定到组标识符的第一组认证向量是否本地存在，其中第一组认证向量是用于认证MTC组中的MTC设备的认证向量; 如果存在，根据第一组认证向量，认证要认证的MTC设备，并生成待认证的MTC设备的系统密钥。 本发明提供的技术方案可以应用于认证MTC设备的技术领域。

    Method and related device for generating group key
    19.
    发明授权
    Method and related device for generating group key 有权

    公开(公告)号：US09775028B2

    公开(公告)日：2017-09-26

    申请号：US14264587

    申请日：2014-04-29

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Lijia Zhang ,  Jing Chen ,  Yixian Xu

    IPC: H04L29/06 ,  H04W12/04 ,  H04W4/00 ,  H04W4/08 ,  H04W88/08

    CPC classification number: H04W12/04 ,  H04L63/062 ,  H04L63/065 ,  H04W4/08 ,  H04W4/70 ,  H04W88/08

    Abstract: Embodiments of the present invention provide a method and a related device for generating a group key. The method includes: obtaining a group ID of a group where a machine type communication MTC device is located; obtaining a group communication root key corresponding to the group ID; generating a group key corresponding to the group ID according to the group communication root key; and sending the group key encrypted by using an access stratum key of the MTC device to the MTC device, so that the MTC device obtains the group key through decryption according to the access stratum key of the MTC device. According to the foregoing technical solutions, a base station may allocate, to an MTC device, a group key corresponding to a group where the MTC device is located.

    MTC device communication method, device, and system
    20.
    发明授权
    MTC device communication method, device, and system 有权
    MTC设备通信方式，设备和系统

    公开(公告)号：US09445217B2

    公开(公告)日：2016-09-13

    申请号：US14518608

    申请日：2014-10-20

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Lijia Zhang ,  Jing Chen ,  Yixian Xu ,  Yali Guo

    IPC: H04B7/00 ,  H04W4/00 ,  H04W48/14 ,  H04W4/14

    CPC classification number: H04W4/14 ,  H04L51/30 ,  H04W4/70 ,  H04W12/08 ,  H04W12/12 ,  H04W48/14

    Abstract: Embodiments of the present invention provide an MTC device communication method, device, and system. A second network element receives, a query message sent by a first network element after the first network element identifies that a type of a received short message is a preset-type short message. The query message comprises an identifier of a receiver of the short message and an identifier of a sender of the short message. The second network element checks whether the sender is authorized to send the preset-type short message to the receiver. The second network element sends a message to the first network element indicating whether or not to send the short message to the receiver.

    Abstract translation: 本发明的实施例提供一种MTC设备通信方法，设备和系统。 第二网元在第一网元识别出所接收的短消息的类型是预设类型的短消息之后接收由第一网元发送的查询消息。 查询消息包括短消息的接收者的标识符和短消息的发送者的标识符。 第二网络元件检查发送者是否被授权向接收者发送预设类型的短消息。 第二网元向第一网元发送消息，指示是否向接收者发送短消息。

Patent Agency Ranking