公开(公告)号：US20200174509A1

公开(公告)日：2020-06-04

申请号：US16700536

申请日：2019-12-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunxiang Dai ,  Kairen Wei ,  Zhengsheng Xie ,  Shiyong Fu ,  Hua Chen ,  Xingbin Yin

IPC: G05F1/625

Abstract: This disclosure discloses a power supply method and a power supply device, and pertains to the field of power supply technologies. The method includes: supplying, by a power supply device, power to a load through a power supply port, where the power supply port is connected to a power receiving port of the load by using a power supply cable; and communicating, by the power supply device, with the load through a communications port, to manage a behavior of obtaining power by the load from the power supply device, where the communications port is connected to a communications port of the load by using a communications cable. In this disclosure, the power supply device is a power supply of the load and a controller of the load.

公开(公告)号：US20200092118A1

公开(公告)日：2020-03-19

申请号：US16694184

申请日：2019-11-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yan Zhuang ,  Shiyong Fu ,  Jincan Cao ,  Fuguang Huang ,  Xueqi Chen ,  Rui Hua

IPC: H04L12/10 ,  G06F1/3203

Abstract: A power supply management method performed by power sourcing equipment, includes receiving a power-on request from a level-1 powered device, where the power-on request includes a port identifier of a level-2 power supply port that is detected to be valid in the level-1 powered device, determining, based on the power-on request and an outputtable power of the power sourcing equipment, a level-2 power supply port that is allowed to be powered on in the level-1 powered device, and sending a power-on instruction to the level-1 powered device, where the power-on instruction includes a port identifier of the level-2 power supply port that is allowed to be powered on in the level-1 powered device. The power sourcing equipment uses the level-1 powered device and a level-2 powered device connected to the level-1 powered device as a whole, and centrally performs power supply control and power management.

公开(公告)号：US20190229934A1

公开(公告)日：2019-07-25

申请号：US16371918

申请日：2019-04-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yan Zhuang ,  Shiyong Fu ,  Jincan Cao ,  Fuguang Huang ,  Xueqi Chen ,  Rui Hua

IPC: H04L12/10 ,  G06F1/26

Abstract: A power over Ethernet method includes: performing, by power sourcing equipment, a plurality of detections by using an Ethernet port, connected to an intermediate device, of the power sourcing equipment, where a quantity of detections performed by the power sourcing equipment is equal to a quantity of power supply ports of the intermediate device; and if at least one detection result of the plurality of detections is effective, sending, by the power sourcing equipment, a power supply indication to the intermediate device, and supplying power to the connection port. In this way, the power sourcing equipment can supply power across the intermediate device to a powered device connected to the intermediate device, and a power loss caused by voltage conversion is avoided.

公开(公告)号：US20190068479A1

公开(公告)日：2019-02-28

申请号：US16113102

申请日：2018-08-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shiyong Fu ,  Yan Zhuang ,  Rui Hua

IPC: H04L12/26 ,  H04L12/10

Abstract: A port adaptation method applied to a network device including a port adaptation apparatus includes probing whether the first port and the second port are connected to power sourcing equipment, and maintaining or changing one of the first port and the second port that is connected to power sourcing equipment as, or to, a powered state, and a state of the other port as, or to, a powering state.

公开(公告)号：US20190068386A1

公开(公告)日：2019-02-28

申请号：US16114896

申请日：2018-08-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shiyong Fu ,  Yan Zhuang ,  Rui Hua

IPC: H04L12/10 ,  H04L12/26 ,  H02J13/00

Abstract: A network device probes whether a first port of the network device is coupled to power sourcing equipment, and when probing that the first port is coupled to power sourcing equipment, maintain or change the first port to a powered state, and lock the first port as a power drawing port, or when probing that the first port is decoupled to power sourcing equipment, and the network device has a power supply for supplying power, change the first port to a powering state. In this way, the first port may adaptively serve as a power drawing port or a power sourcing port according to a coupled device such that manually distinguished a port during device interconnection is not necessary and a coupling error rate is reduced.