公开(公告)号：US20170214568A1

公开(公告)日：2017-07-27

申请号：US15328417

申请日：2014-07-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shenlong YANG ,  Bo DU ,  Xiaoya ZHENG

IPC: H04L12/24 ,  G06F9/445 ,  H04L1/00 ,  H04L29/08 ,  H04Q11/00

CPC classification number: H04L41/082 ,  G06F8/65 ,  H04L1/0061 ,  H04L41/0809 ,  H04L41/0856 ,  H04L67/34 ,  H04L69/22 ,  H04L2212/00 ,  H04Q11/0062 ,  H04Q2011/0047 ,  H04Q2011/0083

Abstract: A terminal upgrade method and a related device are provided. The method includes: encapsulating, by an element management system (EMS), an upgrade version file supported by a type of terminal as a multicast program and storing the multicast program in a multicast server, or sending an upgrade version file supported by a type of terminal to a multicast server; establishing, by the EMS, a version-address mapping relationship; delivering, by the EMS, the version-address mapping relationship to a terminal; and delivering an upgrade start instruction to the terminal, to trigger the terminal to send a multicast program on-demand request to the multicast server, so that the terminal receives the multicast program that is stored in the multicast program storage address of the terminal and sent by the multicast server, and the terminal performs a version upgrade operation according to the received multicast program.

公开(公告)号：US20230344412A1

公开(公告)日：2023-10-26

申请号：US18343659

申请日：2023-06-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hangtian HOU ,  Bo DU ,  Peng LIU ,  Zongzhi GAO

IPC: H03H3/02 ,  H03H9/54

CPC classification number: H03H9/54 ,  H03H3/02

Abstract: The present disclosure relates to filters and preparation methods of the filters. One example filter includes a substrate, a series resonator, a parallel resonator, and a series branch. The series resonator includes a first Bragg reflection layer and a first piezoelectric transduction structure that are sequentially stacked on the substrate. The parallel resonator includes a second Bragg reflection layer and a second piezoelectric transduction structure that are sequentially stacked on the substrate, and a structure of the first Bragg reflection layer is different from a structure of the second Bragg reflection layer. The series branch includes the series resonator, and the series branch is coupled between an input end of the filter and an output end of the filter.