公开(公告)号：US20160080112A1

公开(公告)日：2016-03-17

申请号：US14954248

申请日：2015-11-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lijia Zhang ,  Yuanda Huang

IPC: H04L1/00

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.

Abstract translation: 本发明的实施例涉及通信领域，并且提供用于降低解码复杂度的解码方法和解码器。 该方法包括：接收待解码信号; 根据由S区域决策公式形成的区域判定规则对待解码信号进行区域决定，以获取区域判定结果; 根据决策结果获取N个星座点，其中N个星座点分别是在N个子集中并且最接近待解码信号的星座点; 获取对应于N个星座点的N个非编码比特，以及待解码信号和N个星座点之间的分支度量; 以及基于所述分支度量和所述N个未编码比特执行维特比解码，并且输出与待解码信号相对应的解码结果。 本发明适用于信号解码场景。

公开(公告)号：US09049594B2

公开(公告)日：2015-06-02

申请号：US13952985

申请日：2013-07-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xinyi Chen ,  Dongmei Zhang ,  Lijia Zhang ,  Xiaohan Liu

IPC: H04W12/04 ,  H04L29/06 ,  H04W88/12

CPC classification number: H04W12/04 ,  H04L63/061 ,  H04L2463/061 ,  H04W88/12

Abstract: A method and a device for key generation are disclosed in embodiments of the present invention. The method for key generation is applied to a UMTS-LTE resource convergence scenario that has a base station as an anchor point, and includes: deriving, according to a root key and a count value of an LTE system, or according to a random number and an LTE system root key, a UMTS integrity key and cipher key, and sending the UMTS integrity key and cipher key to a UMTS control node. The embodiments of the present invention enable the derivation of the UMTS integrity key and cipher key in a UMTS-LTE resource convergence scenario that has a base station as an anchor point, enable a user equipment to communicate securely through a UMTS, and further improve security of data transmitted in the UMTS.

Abstract translation: 在本发明的实施例中公开了用于密钥生成的方法和装置。 用于密钥生成的方法应用于以基站为锚点的UMTS-LTE资源汇聚场景，包括：根据根密钥和LTE系统的计数值，根据随机数 以及LTE系统根密钥，UMTS完整性密钥和密码密钥，并将UMTS完整性密钥和加密密钥发送到UMTS控制节点。 本发明的实施例能够在具有基站作为锚点的UMTS-LTE资源汇聚场景中导出UMTS完整性密钥和加密密钥，使得用户设备能够通过UMTS安全地通信，并进一步提高安全性 的在UMTS中发送的数据。