# US 2021/0278889 A1 · Powering method and powering system for power over ethernet > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0278889 A1 - Document ID: US20210278889A1 - Status: Published application - Kind: A1 - Application number: 16/998,879 - Filed: 2020-08-20 - Published: 2021-09-09 - Earliest claimed: 2020-03-06 - Assignees: Realtek Semiconductor Corp. - Applicants: Realtek Semiconductor Corporation - Inventors: PENGCHAO TENG; MINGCAI XU; YULUN LIU - Web page: https://patentgrep.com/patent/US20210278889A1 ## CPC - G06F 1/28: Supervision thereof, e.g. detecting power-supply failure by out of limits supervision - H04L 12/40045: {Details regarding the feeding of energy to the node from the bus} - G06F 9/5094: {where the allocation takes into account power or heat criteria (power management in computers in general G06F1/3203; thermal management in computers in general G06F1/206)} - H04L 12/10: Current supply arrangements - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The present invention provides a power supply system and power supply method thereof for Power over Ethernet. The power supply system is configured to: calculate a static allocation remaining power and a dynamic allocation remaining power of power sourcing equipment; and determine whether a consuming power of powered device is greater than the static allocation remaining power and the dynamic allocation remaining power. When the consuming power is less than or equal to the static allocation remaining power and is less than or equal to the dynamic allocation remaining power, the powering system is configured to perform a static powering procedure. When the consuming power is greater than the static allocation remaining power and is less than or equal to the dynamic allocation remaining power, the powering system is configured to perform a dynamic powering procedure. ## Claims ### Claim 1 A power supply method for use in Power over Ethernet (POE), comprising: calculating a static allocation remaining power and a dynamic allocation remaining power of a power sourcing equipment (PSE); and determining whether a first consuming power of a first powered device (PD) of at least one PD is greater than the static allocation remaining power and the dynamic allocation remaining power, wherein: performing a static power supply procedure when the first consuming power is less than or equal to the static allocation remaining power and the first consuming power is less than or equal to the dynamic allocation remaining power; and performing a dynamic power supply procedure when the first consuming power is greater than the static allocation remaining power and the first consuming power is less than or equal to the dynamic allocation remaining power. ### Claim 2 (depends on 1) The power supply method of claim 1, further comprising: performing a no power supply procedure when the first consuming power is greater than the static allocation remaining power and the first consuming power is greater than the dynamic allocation remaining power. ### Claim 3 (depends on 1) The power supply method of claim 1, wherein performing the static power supply procedure further comprises: adding a second consuming power of a second PD of the at least one PD to a total power consumption; determining whether the total power consumption is greater than the static allocation remaining power, wherein: adding the second PD into a power supply list when the total power consumption is less than or equal to the static allocation remaining power; and adding the second PD into a no power supply list when the total power consumption is greater than the static allocation remaining power. ### Claim 4 (depends on 1) The power supply method of claim 1, wherein performing the dynamic power supply procedure further comprises: calculating a time difference between an overall power supply time point and an instant time point, wherein: performing a no power supply procedure when the time difference is less than a pre-determined power supply time interval. ### Claim 5 (depends on 4) The power supply method of claim 4, wherein performing the dynamic power supply procedure when the time difference is greater than or equal to the pre-determined power supply time interval further comprises: adding a second consuming power of a second PD of the at least one PD to a total power consumption; determining whether the total power consumption is greater than the dynamic allocation remaining power, wherein: adding the second PD into a power supply list when the total power consumption is less than or equal to the dynamic allocation remaining power; and adding the second PD into a no power supply list when the total power consumption is greater than the dynamic allocation remaining power. ### Claim 6 (depends on 1) The power supply method of claim 1, wherein the static allocation remaining power is a power of subtracting power allocated to at least one power supply interface from a total supply power of the PSE. ### Claim 7 (depends on 1) The power supply method of claim 1, wherein, the dynamic allocation remaining power is a power of subtracting power actually consumed by at least one power supply interface from a total supply power of the PSE. ### Claim 8 (depends on 1) The power supply method of claim 1, further comprising: scanning at least one power supply interface of the PSE; and detecting that one of the at least one power supply interface is connected with the first PD. ### Claim 9 (depends on 8) The power supply method of claim 8, further comprising: determining a configuration setting corresponding to the first PD to allow power supply. ### Claim 10 (depends on 9) The power supply method of claim 9, further comprising: determining the first consuming power of the first PD connected with one of the at least one power supply interface. ### Claim 11 A power supply system for use in power over Ethernet (PoE), comprising: a micro control unit (MCU); and a memory, configured to store a program that, when being executed, causes the MCU to: calculate a static allocation remaining power and a dynamic allocation remaining power of a power sourcing equipment (PSE); and determine whether a first consuming power of a first powered device (PD) of at least one PD is greater than the static allocation remaining power and the dynamic allocation remaining power, wherein: perform a static power supply procedure, when the first consuming power is less than or equal to the static allocation remaining power and the first consuming power is less than or equal to the dynamic allocation remaining power; and perform a dynamic power supply procedure, when the first consuming power is greater than the static allocation remaining power and the first consuming power is less than or equal to the dynamic allocation remaining power. ### Claim 12 (depends on 11) The power supply system of claim 11, wherein the program, when being executed, further causes the MCU to: perform a no power supply procedure when the first consuming power is greater than the static allocation remaining power and the first consuming power is greater than the dynamic allocation remaining power. ### Claim 13 (depends on 11) The power supply system of claim 11, wherein performing the static power supply procedure further comprises: adding a second consuming power of a second PD of the at least one PD to a total power consumption; determining whether the total power consumption is greater than the static allocation remaining power, wherein: adding the second PD into a power supply list when the total power consumption is less than or equal to the static allocation remaining power; and adding the second PD into a no power supply list when the total power consumption is greater than the static allocation remaining power. ### Claim 14 (depends on 11) The power supply system of claim 11, wherein performing the dynamic power supply procedure further comprises: calculating a time difference between an overall power supply time point and an instant time point; wherein: performing a no power supply procedure when the time difference is less than a pre-determined power supply time interval. ### Claim 15 (depends on 14) The power supply system of claim 14, wherein, when performing the dynamic power supply procedure when the time difference is greater than or equal to the pre-determined power supply time interval further comprises: adding a second consuming power of a second PD of the at least one PD to a total power consumption; determining whether the total power consumption is greater than the dynamic allocation remaining power, wherein: adding the second PD into a power supply list when the total power consumption is less than or equal to the dynamic allocation remaining power; and adding the second PD into a no power supply list when the total power consumption is greater than the dynamic allocation remaining power. ### Claim 16 (depends on 11) The power supply system of claim 11, wherein, the static allocation remaining power is a power of subtracting power allocated to at least one power supply interface from a total supply power of the PSE. ### Claim 17 (depends on 11) The power supply system of claim 11, wherein, the dynamic allocation remaining power is a power of subtracting power actually consumed by at least one power supply interface from a total supply power of the PSE. ### Claim 18 (depends on 11) The power supply system of claim 11, the execution of the program further causes the MCU to: scanning at least one power supply interface; and detecting that one of the at least one power supply interface is connected with the first PD. ### Claim 19 (depends on 18) The power supply system of claim 18, the execution of the program further causes the MCU to: determining a configuration setting corresponding to the first PD to allow power supply. ### Claim 20 (depends on 19) The power supply system of claim 19, the execution of the program further causes the MCU to: determining the first consuming power of the first PD connected with one of the at least one power supply interface.