公开(公告)号：US20250014976A1

公开(公告)日：2025-01-09

申请号：US18889286

申请日：2024-09-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yilu Liu ,  Xiaojun Wang ,  Guangwei Wang ,  Xiaodong Cong ,  Taotao Zhang

IPC: H01L23/498 ,  H01L23/00 ,  H01L23/34 ,  H05K1/02 ,  H05K1/11 ,  H05K1/18

Abstract: A chip system includes a BGA chip, a PCB, a signal source module, and a detection module. A function pin of the BGA chip is soldered to a function solder pad of the PCB by a first solder ball and a detection pin of the BGA chip is soldered to a detection solder pad of the PCB by a second solder ball. A designed life of the second solder ball is shorter than a designed life of the first solder ball. A detection path is formed between the BGA chip and the PCB and includes the second solder ball. The signal source module is configured to send a detection signal to the detection module through the detection path to determine a status of the detection path based on the received detection signal.

公开(公告)号：US20190394639A1

公开(公告)日：2019-12-26

申请号：US16563682

申请日：2019-09-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lin Zhang ,  Ya Yang ,  Xiaojun Wang

IPC: H04W12/00 ,  H04L12/18 ,  H04L29/12 ,  H04W12/04

Abstract: A multicast service processing method and an access point are disclosed. The method includes: generating, by an access point (AP), a first group addressed frame and an individually addressed frame based on a multicast packet, where the first group addressed frame is encrypted by a first multicast key, and the individually addressed frame is encrypted by a unicast key of a second terminal.

公开(公告)号：US11432140B2

公开(公告)日：2022-08-30

申请号：US16563682

申请日：2019-09-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lin Zhang ,  Ya Yang ,  Xiaojun Wang

IPC: H04L29/06 ,  H04W12/041 ,  H04L12/18 ,  H04L61/5069 ,  H04W12/037 ,  H04W12/0433 ,  H04L101/622 ,  H04W84/12 ,  H04W88/08

Abstract: A multicast service processing method and an access point are disclosed. The method includes: generating, by an access point (AP), a first group addressed frame and an individually addressed frame based on a multicast packet, where the first group addressed frame is encrypted by a first multicast key, and the individually addressed frame is encrypted by a unicast key of a second terminal.

公开(公告)号：US20220294649A1

公开(公告)日：2022-09-15

申请号：US17831136

申请日：2022-06-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kai Pan ,  Jing Chen ,  Xiaojun Wang

IPC: H04L9/32 ,  H04L9/08

Abstract: A certificate revocation list updating method includes determining by a first road side unit (RSU), based on a first certificate revocation list stored by the first RSU, that a certificate used by a first on board unit (OBU) in a coverage area of the first RSU is revoked, sending, by the first RSU, a first notification message to one or more OBUs in the coverage area of the first RSU, where the first notification message notifies the one or more OBUs to update a certificate revocation list.