CN106209388B

CN106209388B - A kind of power management method of Power over Ethernet, power supply unit and power receiving equipment

Info

Publication number: CN106209388B
Application number: CN201510218878.7A
Authority: CN
Inventors: 庄艳; 瓦埃勒·威廉·迪亚布; 付世勇; 杜永; 华睿
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-04-30
Filing date: 2015-04-30
Publication date: 2019-03-19
Anticipated expiration: 2035-04-30
Also published as: CN106209388A

Abstract

The invention discloses a kind of power management method of Power over Ethernet, power supply unit and power receiving equipments, the described method includes: power supply unit PSE determines that the currently running physical layer modes of the ethernet port of the PSE belong to preassigned pattern set, the preassigned pattern set includes the physical layer modes for requiring to use high standard ethernet netting twine；The PSE is according to the power grade of the Power over Ethernet of the ethernet port and considers the corresponding reserved line loss power of second resistance value, the output power thresholding of the ethernet port is set, wherein, the maximum resistance value of route of the second resistance value between the PSE and powered device PD, the second resistance value is less than first resistor value, the first resistor value is if the physical layer modes of ethernet port operation are not belonging to the preassigned pattern set, the maximum resistance value of the route.

Description

A kind of power management method of Power over Ethernet, power supply unit and power receiving equipment

Technical field

The present invention relates to power technique fields, in particular to a kind of power management method of Power over Ethernet, power supply unit And power receiving equipment.

Background technique

Power over Ethernet (English: Power over Ethernet, abbreviation: PoE) is a kind of wired power supply technique, application PoE technology, power supply unit (English: power sourcing equipment, abbreviation: PSE) can be by ethernet signal and electricity Energy (English: electric energy) is transferred to power receiving equipment (English: powered device, abbreviation: PD).Wherein, PSE There are one or more ethernet ports, the ethernet port of PSE is connected by the ethernet port of ethernet netting twine and PD.PSE The electric energy supply PSE itself and PD obtained from a power supply is used.

During electric energy is passed to PD by ethernet netting twine by PSE, ethernet netting twine can consume the portion of PSE output Divide electric energy.Institute of Electrical and Electric Engineers (English: Institute of Electrical and Electronics Engineers, abbreviation: IEEE) publication PoE standard, i.e. 802.3af and 802.3at.802.3at is by 100 meter of 5 class cable Power consumed by the resistance of (English: 5 cable of category) is as reserved line loss power.It is reserved in PoE standard Line loss power is larger, power utilization low efficiency.

Summary of the invention

The embodiment of the present invention provides the power management method, power supply unit and power receiving equipment of a kind of Power over Ethernet, is used for Improve power utilization efficiency.

First aspect provides a kind of power management method of Power over Ethernet, comprising:

Power supply unit PSE determines that the currently running physical layer modes of the ethernet port of the PSE belong to preassigned pattern Set, the preassigned pattern set include the physical layer modes for requiring to use high standard ethernet netting twine；

The PSE is according to the power grade of the Power over Ethernet of the ethernet port and considers that second resistance value is corresponding Reserved line loss power, is arranged the output power thresholding of the ethernet port, wherein the second resistance value is described The maximum resistance value of route between PSE and powered device PD, the second resistance value are less than first resistor value, first electricity Resistance value is if the physical layer modes of ethernet port operation are not belonging to the preassigned pattern set, the maximum of the route Resistance value.

With reference to first aspect, in the first realization of first aspect, the defeated of the ethernet port is set in the PSE Out before power threshold, the method also includes:

The PSE determines that the PD is not enabled on and utilizes the power not consumed by the high standard ethernet netting twine.

With reference to first aspect, in realizing at second of first aspect, the PSE is according to the ether of the ethernet port It nets the power grade of power supply and considers the corresponding reserved line loss power of the second resistance value, the ethernet port is set Output power thresholding, comprising:

When the power grade belongs to the first power grade set, the PSE considers that the second resistance value is corresponding Reserved line loss power, is arranged the output power thresholding of the ethernet port corresponding with the power grade.

Second of realization with reference to first aspect, in the third realization of first aspect, the PSE is according to the ether It nets the power grade of the Power over Ethernet of port and considers the corresponding reserved line loss power of the second resistance value, institute is set State the output power thresholding of ethernet port, further includes:

When the power grade belongs to the second power grade set, and the PD is not enabled on using not by the high standard When the power of ethernet netting twine consumption, the PSE considers that the second resistance is worth corresponding reserved line loss power, setting with The output power thresholding of the corresponding ethernet port of the power grade, wherein the second power grade set and institute The first power grade intersection of sets is stated to integrate as empty set.

With reference to first aspect or the first of first aspect is realized or is realized or first aspect second of first aspect The third realization, realize at the 4th kind of first aspect, the output power door of the ethernet port be set in the PSE Before limit, the method also includes:

The field in Link Layer Discovery Protocol LLDP frame after the extension that the PSE is transmitted by the PD, determine described in PD is not utilized not when the maximum consumption power of the ethernet port of the PD is arranged by high standard ethernet netting twine consumption Power, wherein the field in LLDP frame after the extension includes one or more of following two field: powering mode makes It can field and ownership field；

Whether the powering mode enables field enabled using not by the high standard Ethernet net for characterizing the PD The power of line consumption；

The ownership field is for characterizing whether the PD requires using not by high standard ethernet netting twine consumption Power ownership.

Second aspect provides a kind of power management method of Power over Ethernet, comprising:

Powered device PD determines that the currently running physical layer modes of the ethernet port of the PD belong to preassigned pattern collection It closes, the preassigned pattern set includes the physical layer modes for requiring to use high standard ethernet netting twine；

The PD is according to the power grade of the Power over Ethernet of the ethernet port and considers that second resistance value is corresponding Reserved line loss power, is arranged the maximum consumption power of the ethernet port, wherein the second resistance value is the PD The maximum resistance value of route between power supply unit PSE, the second resistance value are less than first resistor value, the first resistor Value is if the physical layer modes of ethernet port operation are not belonging to the preassigned pattern set, the maximum electricity of the route Resistance value.

In conjunction with second aspect, in the first realization of second aspect, it is arranged in the PD corresponding with the power grade The ethernet port maximum consumption power before, the method also includes:

The PD determines that the PSE is not enabled on and utilizes the power not consumed by the high standard ethernet netting twine.

In conjunction with second aspect, in the realizing for second of second aspect, the PD is according to the ether of the ethernet port It nets the power grade of power supply and considers the corresponding reserved line loss power of the second resistance value, the ethernet port is set Maximum consumption power, comprising:

When the power grade belongs to the second power grade set, the PD considers that the second resistance value is corresponding pre- Line loss power is stayed, the maximum consumption power of the ethernet port corresponding with the power grade is set.

In conjunction with second of realization of second aspect, in the third realization of second aspect, the PD is according to the ether It nets the power grade of the Power over Ethernet of port and considers the corresponding reserved line loss power of the second resistance value, institute is set State the maximum consumption power of ethernet port, further includes:

When the power grade belongs to the first power grade set, and the PSE is not enabled on using not by the high standard When the power of quasi- ethernet netting twine consumption, the PD considers that the second resistance is worth corresponding reserved line loss power, setting The maximum consumption power of the ethernet port corresponding with the power grade, wherein the second power grade set with The first power grade intersection of sets integrates as empty set.

In conjunction with the first of second aspect or second aspect realization or second of realization of second aspect or second aspect The third realization, realize at the 4th kind of second aspect, the maximum consumption function of the ethernet port be set in the PD Before rate, the method also includes:

The field in Link Layer Discovery Protocol LLDP frame after the extension that the PD is transmitted by the PSE, determine described in PSE is not utilized when the output power thresholding of the ethernet port of the PSE is arranged not to be consumed by the high standard ethernet netting twine Power, wherein the field in LLDP frame after the extension includes one or more of following two field: powering mode Enabled field and ownership field；

Whether the powering mode enables field enabled using not by the high standard Ethernet net for characterizing the PSE The power of line consumption；

The ownership field is for characterizing whether the PSE requires using not by high standard ethernet netting twine consumption Power ownership.

The third aspect provides a kind of power supply unit PSE, comprising:

Chipset, ethernet port, transformer and PHY chip, the chipset include processor and PSE core Piece, the processor are connected to the PSE chip and the PHY chip, and the PSE chip is connected to the transformer, described Ethernet port is connected to the transformer, and the transformer is connected to the PHY chip；Wherein,

The ethernet port, for connecting powered device PD by ethernet netting twine；

The transformer, for coupling the data between electric energy, the PSE and the PD that the PSE is transmitted to the PD Code stream；

The PHY chip stores the currently running physical layer modes of the ethernet port of the PSE；

The chipset is used to obtain the currently running physical layer mould of the ethernet port in the PHY chip Formula, and for judging whether the physical layer modes belong to preassigned pattern set, the preassigned pattern set includes requiring to use The physical layer modes of high standard ethernet netting twine, when determining that the physical layer modes belong to the preassigned pattern set, according to The power grade of the Power over Ethernet of the ethernet port simultaneously considers the corresponding reserved line loss power of second resistance value, if Set the output power thresholding of the ethernet port, wherein the second resistance value is between the PSE and powered device PD The maximum resistance value of route, the second resistance value are less than first resistor value, and the first resistor value is if the Ethernet The physical layer modes of port operation are not belonging to the preassigned pattern set, the maximum resistance value of the route.

In conjunction with the third aspect, in the first realization of the third aspect, the PSE chip is also used to:

It determines that the PD is not enabled on and utilizes the power not consumed by the high standard ethernet netting twine.

It is realized in conjunction with the first of the third aspect or the third aspect, in second of realization of the third aspect, the PSE Chip is stored with the first output power thresholding table and the second output power thresholding table, and the first output power thresholding table corresponds to The second resistance value, the second output power thresholding table correspond to the first resistor value,

It include multiple power grades and multiple output power thresholdings in the first output power thresholding table, described first is defeated The multiple power grade in power threshold table is mapped as dijection to the multiple output power thresholding out,

It include multiple power grades and multiple output power thresholdings in the second output power thresholding table, described second is defeated The multiple power grade in power threshold table is mapped as dijection to the multiple output power thresholding out,

The institute in the multiple power grade and the second output power thresholding table in the first output power thresholding table It is identical to state multiple power grade difference, the power grade of the first power grade set is belonged in the first output power thresholding table Corresponding output power thresholding is less than the corresponding output power door of corresponding power grade in the second output power thresholding table Limit,

Belong to the corresponding output power of power grade of the second power grade set in the first output power thresholding table Thresholding is equal to the corresponding output power thresholding of corresponding power grade in the second output power thresholding table, described second power etc. Grade set integrates with the first power grade intersection of sets as empty set,

The processor is for judging whether the currently running physical layer modes belong to the preassigned pattern set, also For when determining that the currently running physical layer modes belong to the preassigned pattern set, the transmission of Xiang Suoshu PSE chip to refer to It enables, described instruction is used to indicate the PSE chip and the ethernet port is arranged according to the first output power thresholding table Output power thresholding；

The PSE chip is used to receive the described instruction that the processor is sent, and executes described instruction, according to the institute The power grade and the first output power thresholding table of the Power over Ethernet of ethernet port are stated, the setting Ethernet is set The output power thresholding of port.

It is realized in conjunction with the first of the third aspect or the third aspect, in the third realization of the third aspect, the PSE It further include memory, the memory is connected to the processor, and the first output power thresholding table is stored in the memory With the second output power thresholding table, the first output power thresholding table corresponds to the second resistance value, second output Power threshold table corresponds to the first resistor value,

The PSE chip is used to the power grade of the Power over Ethernet of the ethernet port being sent to the processing Device；

The processor is used for: judge whether the currently running physical layer modes belong to the preassigned pattern set, After the currently running physical layer modes for determining the ethernet port belong to the preassigned pattern set, according to described One output power thresholding table determines the corresponding output power thresholding of the power grade, and the output power thresholding determined is configured Into the PSE chip；

The PSE chip is also used to control the output power of the ethernet port according to the output power thresholding.

In conjunction with the first of the third aspect or the third aspect realization or second of realization of the third aspect or the third aspect The third realization, realize at the 4th kind of the third aspect, the processor is also used to:

The Link Layer Discovery Protocol LLDP frame after the extension that the PD is transmitted is generated, and receives the extension of the PD transmission LLDP frame afterwards, and the response of the LLDP frame after the extension transmitted to PD transmission to the PD；

The field in LLDP frame after the extension that the processor is also used to transmit by the PD determines the PD setting The power not consumed by the high standard ethernet netting twine is not utilized when the maximum consumption power of the ethernet port of the PD, and Notify the PSE chip；

The field in LLDP frame after the extension of the PD transmission includes one or more of following two field: power supply Mode enables field and ownership field；Whether the powering mode enables field enabled using not by institute for characterizing the PD State the power of high standard ethernet netting twine consumption；The ownership field is for characterizing whether the PD requires using not described The ownership of the power of high standard ethernet netting twine consumption.

Fourth aspect provides a kind of powered device PD, comprising:

Chipset, ethernet port, transformer and PHY chip, the chipset include processor and PD chip, The processor is connected to the PD chip and the PHY chip, and the PD chip is connected to the transformer, and the network interface connects It connects device and is connected to the transformer, the transformer is connected to the PHY chip；Wherein,

The network interface connector, for connecting power supply unit PSE by ethernet netting twine；

The PHY chip is stored with the currently running physical layer modes of the ethernet port of the PD；

The chipset is used to obtain the currently running physical layer mould of the ethernet port in the PHY chip Formula, and for judging whether the physical layer modes belong to preassigned pattern set, the preassigned pattern set includes requiring to use The physical layer modes of high standard ethernet netting twine, when determining that the physical layer modes belong to the preassigned pattern set, according to The power grade of the Power over Ethernet of the ethernet port simultaneously considers the corresponding reserved line loss power of second resistance value, if Set the maximum consumption power of the ethernet port, wherein the second resistance value is between the PD and power supply unit PSE The maximum resistance value of route, the second resistance value are less than first resistor value, and the first resistor value is if the Ethernet The physical layer modes of port operation are not belonging to the preassigned pattern set, the maximum resistance value of the route.

In conjunction with fourth aspect, in the first realization of fourth aspect, the PD chip is also used to:

It determines that the PSE is not enabled on and utilizes the power not consumed by the high standard ethernet netting twine.

It is realized in conjunction with the first of fourth aspect or fourth aspect, in second of realization of fourth aspect, the PD core Piece is stored with the first maximum consumption power meter and the second maximum consumption power meter, and the first maximum consumption power meter corresponds to institute Second resistance value is stated, the second maximum consumption power meter corresponds to the first resistor value,

It include multiple power grades and multiple maximum consumption power in the first maximum consumption power meter, described first most The multiple power grade in big consumption power meter is mapped as dijection to the multiple maximum consumption power,

It include multiple power grades and multiple maximum consumption power in the second maximum consumption power meter, described second most The multiple power grade in big consumption power meter is mapped as dijection to the multiple maximum consumption power,

The institute in the multiple power grade and the second maximum consumption power meter in the first maximum consumption power meter It is identical to state multiple power grade difference, the power grade of the second power grade set is belonged in the first maximum consumption power meter Corresponding maximum consumption power is greater than the corresponding maximum consumption function of corresponding power grade in the second maximum consumption power meter Rate,

Belong to the corresponding maximum consumption of power grade of the first power grade set in the first maximum consumption power meter Power is equal to the corresponding maximum consumption power of corresponding power grade in the second output power thresholding table, described second power etc. Grade set integrates with the first power grade intersection of sets as empty set,

The processor is for judging whether the currently running physical layer modes belong to the preassigned pattern set, also For when determining that the currently running physical layer modes belong to the preassigned pattern set, the transmission of Xiang Suoshu PD chip to refer to It enables, described instruction is used to indicate the PD chip and the ethernet port is arranged most according to the first maximum consumption power meter Big consumption power；

The PD chip is used to receive the described instruction that the processor is sent, and executes described instruction, according to the institute The power grade and the first maximum consumption power meter of the Power over Ethernet of ethernet port are stated, the setting Ethernet is set The maximum consumption power of port.

Realize that in the third realization of fourth aspect, the PD is also in conjunction with the first of fourth aspect or fourth aspect Including memory, the memory is connected to the processor, be stored in the memory the first maximum consumption power meter and Second maximum consumption power meter, the first maximum consumption power meter correspond to the second resistance value, and second maximum disappears It consumes power meter and corresponds to the first resistor value,

The PD chip is used to the power grade of the Power over Ethernet of the ethernet port being sent to the processor；

The processor is used for: judge whether the currently running physical layer modes belong to the preassigned pattern set, After the currently running physical layer modes for determining the ethernet port belong to the preassigned pattern set, according to described One maximum consumption power meter determines the corresponding maximum consumption power of the power grade, the maximum consumption power configuration that will be determined Into the PD chip；

The PD chip is also used to the consumption power of the ethernet port according to the maximum consumption power control.

In conjunction with the first of fourth aspect or fourth aspect realization or second of realization of fourth aspect or fourth aspect The third realization, realize at the 4th kind of fourth aspect, the processor is also used to:

The Link Layer Discovery Protocol LLDP frame after the extension that the PSE is transmitted is generated, and receives the expansion of the PSE transmission LLDP frame after exhibition, and the response of the LLDP frame after the extension transmitted to PSE transmission to the PSE；

The field in LLDP frame after the extension that the processor is also used to transmit by the PSE, determines that the PSE is set The function not consumed by the high standard ethernet netting twine is not utilized when setting the output power thresholding of the ethernet port of the PSE Rate, and notify the PD chip；

The field in LLDP frame after the extension of the PSE transmission includes one or more of following two field: being supplied Power mode enables field and ownership field；Whether the powering mode enables field enabled using not for characterizing the PSE The power consumed by the high standard ethernet netting twine；The ownership field is for characterizing whether the PSE requires using not The ownership of the power consumed by the high standard ethernet netting twine.

5th aspect provides a kind of powered device PD, comprising:

PD chip, ethernet port, transformer and PHY chip, the PD chip be connected to the transformer and The PHY chip, the ethernet port are connected to the transformer, and the transformer is connected to the PHY chip；Wherein,

The ethernet port, for connecting power supply unit PSE by ethernet netting twine；

The PHY chip is stored with preassigned pattern set, and the preassigned pattern set includes requiring to use high standard ether The physical layer modes of net cable, the PHY chip are used to judge that the currently running physical layer modes of the ethernet port to be It is no to belong to the preassigned pattern set, it is also used to belong to the PD chip transmission currently running physical layer modes described The notice of preassigned pattern set；

The PD chip is used for when receiving the notice that the PHY chip is sent, according to the ethernet port Power over Ethernet power grade and consider the corresponding reserved line loss power of second resistance value, the ethernet side is set The maximum consumption power of mouth, wherein the maximum resistance of route of the second resistance value between the PD and power supply unit PSE Value, the second resistance value are less than first resistor value, and the first resistor value is the physics if ethernet port operation Layer model is not belonging to the preassigned pattern set, the maximum resistance value of the route.

In conjunction with the 5th aspect, in the first realization of the 5th aspect, the PD chip is also used to:

In conjunction with the first realization of the 5th aspect or the 5th aspect, in second of realization of the 5th aspect, the PD core Piece is stored with the first maximum consumption power meter and the second maximum consumption power meter, and the first maximum consumption power meter corresponds to institute Second resistance value is stated, the second maximum consumption power meter corresponds to the first resistor value,

The PD chip is used for when receiving the notice that the PHY chip is sent, according to the Ethernet The power grade of the Power over Ethernet of port and the first maximum consumption power meter, are arranged the maximum consumption function of the ethernet port Rate.

6th aspect provides a kind of PSE, comprising:

Physical layer modes determination unit, the currently running physical layer modes of the ethernet port for determining the PSE Belong to preassigned pattern set, the preassigned pattern set includes the physical layer modes for requiring to use high standard ethernet netting twine；

Setting unit, for according to the power grade of the Power over Ethernet of the ethernet port and considering second resistance value Corresponding reserved line loss power, is arranged the output power thresholding of the ethernet port, wherein the second resistance value is The maximum resistance value of route between the PSE and powered device PD, the second resistance value are less than first resistor value, and described the One resistance value be if the ethernet port operation physical layer modes be not belonging to the preassigned pattern set, the route Maximum resistance value.

In conjunction with the 6th aspect, in the first realization of the 6th aspect, the PSE further include:

Enabled determination unit utilizes the function not consumed by the high standard ethernet netting twine for determining that the PD is not enabled on Rate.

In conjunction with the 6th aspect, in second of realization of the 6th aspect, the setting unit is used for:

In conjunction with second of realization of the 6th aspect, in the third realization of the 6th aspect, the setting unit is also used to:

In conjunction with the first realization of the 6th aspect or the 6th aspect or second of the 6th aspect is realized or the 6th aspect The third realization, the 6th aspect the 4th kind realize in, the PSE further include:

Negotiation element, the field in Link Layer Discovery Protocol LLDP frame after the extension that the PSE is transmitted by the PD, It determines and is not utilized when the maximum consumption power of the ethernet port of the PD is arranged in the PD not by the high standard Ethernet net The power of line consumption, wherein the field in LLDP frame after the extension includes one or more of following two field: it supplies Power mode enables field and ownership field；

7th aspect provides a kind of PD, comprising:

Physical layer modes determination unit, the currently running physical layer modes category of the ethernet port for determining the PD In preassigned pattern set, the preassigned pattern set includes the physical layer modes for requiring to use high standard ethernet netting twine；

Setting unit, for according to the power grade of the Power over Ethernet of the ethernet port and considering second resistance value Corresponding reserved line loss power, is arranged the maximum consumption power of the ethernet port, wherein the second resistance value is The maximum resistance value of route between the PD and power supply unit PSE, the second resistance value are less than first resistor value, and described the One resistance value be if the ethernet port operation physical layer modes be not belonging to the preassigned pattern set, the route Maximum resistance value.

In conjunction with the 7th aspect, in the first realization of the 7th aspect, the PD further include:

Enabled determination unit, for determining that the PSE is not enabled on using not by high standard ethernet netting twine consumption Power.

In conjunction with the 7th aspect, in the first realization of the 7th aspect, the setting unit is used for:

In conjunction with the 7th the first realization, in second of realization of the 7th aspect, the setting unit is also used to:

In conjunction with the first realization of the 7th aspect or the 7th aspect or second of realization of first aspect, at the 7th aspect The third realization in, the PD further include:

Negotiation element, the field in Link Layer Discovery Protocol LLDP frame after the extension for being transmitted by the PSE, really It does not utilize not when the output power thresholding for the ethernet port that the PSE is arranged in the fixed PSE by the high standard Ethernet net The power of line consumption, wherein the field in LLDP frame after the extension includes one or more of following two field: it supplies Power mode enables field and ownership field；

The one or more technical solutions provided in the embodiment of the present invention, at least have the following technical effects or advantages:

The embodiment of the present invention provides a kind of power management method of Power over Ethernet, comprising: PSE determine the PSE with The currently running physical layer modes for netting very much port belong to preassigned pattern set, and the preassigned pattern set includes requiring using high The physical layer modes of standard ethernet cable；The PSE according to the power grade of the Power over Ethernet of the ethernet port simultaneously Consider that second resistance is worth corresponding reserved line loss power, the output power thresholding of the ethernet port is set, wherein institute The maximum resistance value of route of the second resistance value between the PSE and powered device PD is stated, the second resistance value is less than One resistance value, the first resistor value are if the physical layer modes of ethernet port operation are not belonging to the preassigned pattern Set, the maximum resistance value of the route.

When PSE determines that the currently running physical layer modes of the ethernet port of PSE belong to preassigned pattern set, PSE According to the power grade of the Power over Ethernet of ethernet port and consider the corresponding reserved line loss power of second resistance value, if Set the output power thresholding of the ethernet port.The power as consumed by the difference of second resistance value and first resistor value can For PSE use, power utilization efficiency is improved.

Detailed description of the invention

To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this For the those of ordinary skill in field, without any creative labor, it can also be obtained according to these attached drawings His attached drawing.

Fig. 1 is the PoE system of the power management method suitable for Power over Ethernet provided in an embodiment of the present invention；

Fig. 2 is the flow chart of the power management method of the Power over Ethernet of PSE in the embodiment of the present invention；

Fig. 3 is the flow chart of the power management method of the Power over Ethernet of PD in the embodiment of the present invention；

Fig. 4 is a kind of possible hardware structure diagram of PSE provided in an embodiment of the present invention；

Fig. 5 is a kind of possible hardware structure diagram of PD provided in an embodiment of the present invention；

Fig. 6 is the alternatively possible hardware structure diagram of PD provided in an embodiment of the present invention；

Fig. 7 is the functional block diagram of PSE provided in an embodiment of the present invention；

Fig. 8 is the functional block diagram of PD provided in an embodiment of the present invention.

Specific embodiment

In the embodiment of the present invention, it is pre- that PSE determines that the currently running physical layer modes of the ethernet port of the PSE belong to Mould-fixed set, the preassigned pattern set include the physical layer modes for requiring to use high standard ethernet netting twine；The PSE root According to the Power over Ethernet of the ethernet port power grade and consider the corresponding reserved line loss power of second resistance value, The output power thresholding of the ethernet port is set, wherein the second resistance value is between the PSE and powered device PD Route maximum resistance value, the second resistance value be less than first resistor value, the first resistor value is if the ether The physical layer modes of net port operation are not belonging to the preassigned pattern set, the maximum resistance value of the route.

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical solution in the embodiment of the present invention is explicitly described.

The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes System, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.

Detailed description of embodiments of the present invention with reference to the accompanying drawing.

Referring to FIG. 1, Fig. 1 is the PoE of the power management method suitable for Power over Ethernet provided in an embodiment of the present invention System, PoE system include: PSE and PD.PSE has one or more ethernet ports.The ethernet port of PSE passes through Ethernet The connection of the ethernet port of cable and PD.Electric energy that PSE is obtained from power supply supply PSE itself and PD is used, and PSE can be via Ethernet signal and electric energy (English: electric energy) are transferred to PD by ethernet netting twine.Wherein, ethernet netting twine can To be twisted pair.The system is illustrated there are two for by the PD for being connected to PSE in Fig. 1, two PD are respectively PD1 and PD2.

Certain physical layer modes require the type of ethernet netting twine in Ethernet.Such as: ethernet port is to use 10 gigabit Ethernets (English: 10 Gigabit Ethernet) port of twisted pair, the physical layer modes of port operation are 10G Base-T general mode, the ethernet port of 10G Base-T general mode require 6 class cables of connection.5G Base-T mould The minimum ethernet netting twine type that the ethernet port of formula requires is still in discussion, the Ethernet of possible 5G Base-T mode The ethernet netting twine of port requirements connection is at least 6 class cables；The ethernet port requirement for being also possible to 5G Base-T mode connects The ethernet netting twine connect, which is at least, surpasses 5 class cables (English: 5 cable cat 5e of enhanced category cable)；It is also possible to the ethernet port of the general mode in 5G Base-T mode requires the ethernet netting twine of connection at least The ethernet port requirement of long range (English: long reached) mode to surpass 5 class cables, and in 5G Base-T mode The ethernet netting twine of connection is at least 6 class cables.

Different ethernet netting twines can support ethernet port to run different physical layer modes.For example, 5 class cables can be with The ethernet port of PSE or PD is supported to operate in 2.5G Base-T mode or the mode lower than 2.5G Base-T, such as 1G Base-T mode.The cable of 6 class cables (English: 6 cable of category) or higher standard can support PSE or PD with Too net port operates in 10G Base-T or the mode lower than 10G Base-T.

Reserved line is arranged according to 20 ohm (English: ohm, symbol: Ω), i.e., the resistance value of 100 meter 5 class cable in 802.3af Road loss power.To 1 equipment of Type, i.e. 802.3af equipment in 802.3at, reserved line loss is set still according to 20 ohm Power, and to 2 equipment of Type, i.e. 802.3at equipment, according to by the resistance of 100 meter of 5 class cable, i.e., 12.5 ohm settings are pre- Stay line loss power.However, the ethernet netting twine not necessarily 5 class cables between PSE and PD, it is also possible to be 100 meters Resistance less than 100 meters of resistance of 5 class cables ethernet netting twine, such as: 6 class cables (English: 6 cable of category), Enhance 6 class cables (English: augmented Category 6 or category 6A cable), 7 class cables or more high standard Quasi- cable.

Ethernet netting twine in the embodiment of the present invention by 100 meters of resistance less than 100 meters of resistance of 5 class cables is known as high standard Quasi- ethernet netting twine, such as: the cable of 6 class cables or higher standard can be referred to as high standard ethernet netting twine.Another example is: increasing The cable of strong 6 class cable or higher standard can be referred to as high standard ethernet netting twine.Again for example: 7 class cables or higher standard Cable can be referred to as high standard ethernet netting twine.

Due to high standard ethernet netting twine 100 meters of resistance less than 5 class cables 100 meters of resistance, so high standard with Too power consumed by net cable is much smaller than the reserved line loss power in PoE standard.If can distinguish and be connected to ether The cable for netting port is high standard ethernet netting twine, with 100 meters of highest ethernet netting twines of resistance in high standard ethernet netting twine The estimation ethernet netting twine consumption of 100 meters of resistance power, and using estimation result as reserved line loss power, then phase Than in 802.3at standard, be to the ethernet netting twine between PSE and PD high standard ethernet netting twine application scenarios under, can To reduce reserved line loss power, to allow PSE or PD can be using the power not consumed by high standard ethernet netting twine.

It is different according to the definition of high standard ethernet netting twine, the highest ethernet netting twine of resistance in high standard ethernet netting twine Difference, the resistance value that above-mentioned estimation is used are different.Such as: if high standard ethernet netting twine is 6 class cables or higher standard Cable, then the highest cable of resistance is 6 class cables in high standard ethernet netting twine, should be with resistance (i.e. 6.7 Europe of 6 class cables Nurse), the power of estimation ethernet netting twine consumption.If high standard ethernet netting twine is the cable of 6A class cable or higher standard, Then the highest cable of resistance is 6A class cable in high standard ethernet netting twine, should estimate Ethernet with the resistance of 6A class cable The power of cable consumption.Similar, if high standard ethernet netting twine is the cable of 7 class cables or higher standard, high standard The highest cable of resistance is 7 class cables in ethernet netting twine, should estimate ethernet netting twine consumption with the resistance of 7 class cables Power.

Hereafter by by taking high standard ethernet netting twine is the cable of 6 class cables or higher standard as an example, to the embodiment of the present invention The power management method of the Power over Ethernet of offer is illustrated.The embodiment of the present invention is introduced from the end PSE and the end PD in turn below The power management method of the Power over Ethernet of offer.

Referring to FIG. 2, Fig. 2 is the flow chart of the power management method of the Power over Ethernet of PSE in the embodiment of the present invention.It should Method includes:

Step 101:PSE determines that the currently running physical layer modes of the ethernet port of the PSE belong to preassigned pattern Set, the preassigned pattern set include the physical layer modes for requiring to use high standard ethernet netting twine.

Step 102: the power grade of the Power over Ethernet according to the ethernet port simultaneously considers second resistance value Corresponding reserved line loss power, is arranged the output power thresholding of the ethernet port, wherein the second resistance value is The maximum resistance value of route between the PSE and PD, the second resistance value are less than first resistor value, the first resistor value If the physical layer modes for ethernet port operation are not belonging to the preassigned pattern set, the maximum resistance of the route Value.

Referring to FIG. 3, Fig. 3 is the flow chart of the power management method of the Power over Ethernet of PD in the embodiment of the present invention.It should Method includes:

Step 201:PD determines that the currently running physical layer modes of the ethernet port of the PD belong to preassigned pattern collection It closes, the preassigned pattern set includes the physical layer modes for requiring to use high standard ethernet netting twine.

Step 202: the PD is according to the power grade of the Power over Ethernet of the ethernet port and considers second resistance It is worth corresponding reserved line loss power, the maximum consumption power of the ethernet port is set, wherein the second resistance value The maximum resistance value of route between the PD and PSE, the second resistance value are less than first resistor value, the first resistor Value is if the physical layer modes of ethernet port operation are not belonging to the preassigned pattern set, the maximum electricity of the route Resistance value.

The embodiment of the present invention proposes the physical layer modes run by the ethernet port of PSE or PD first, determine PSE with The maximum resistance of route between PD.

The physical layer modes that high standard ethernet netting twine is used as required in the embodiment of the present invention determine preassigned pattern set. The physical layer modes for requiring to use high standard ethernet netting twine are included at least in preassigned pattern set, also may include being more than One physical layer modes for requiring to use high standard ethernet netting twine, for example including requiring using high standard ethernet netting twine Physical layer modes.First resistor value is traditional ethernet netting twine maximum line resistance value in 802.3at, i.e., 20 ohm (Type 1) or 12.5 ohm (Type 2).

Second resistance value is 100 meters of resistance of 100 meters of highest ethernet netting twines of resistance in high standard ethernet netting twine. For example, if high standard ethernet netting twine be 6 class cables or higher standard cable for, so second resistance value be 6 class nets 100 meters of resistance of line, i.e., 6.7 ohm.

Power grade is the grade classification in the power management of PoE system to power limit, and 802.3at standard provides 0-4 Grade power grade, the embodiment of the present invention can support the power grade further expanded, such as 0-8 grades of power grades.Each function Rate grade determines respective power limit, i.e. the output power thresholding of PSE and the maximum consumption power of PD.Different power grades Corresponding performance number is generally different.PSE according to and PD negotiate power grade setting connection PD ethernet port it is defeated Power threshold out.PD according to and PSE negotiate power grade setting connection PSE ethernet port maximum consumption function Rate.

Reserved line loss power is power consumed by the maximum resistance value of the route between PSE and PD, due to difference Power grade under, the size of current transmitted on the route between PSE and PD is different, so under different capacity grade, reserves line Road loss power is different.

The corresponding reserved line loss power of second resistance value refers to: if the maximum resistance of the route between PSE and PD Value is second resistance value, then can use the electric current transmitted on the route between second resistance value and PSE and PD, calculate second The corresponding reserved line loss power of resistance value.Similar, if the maximum resistance value of the route between PSE and PD is the first electricity Resistance value then can use the electric current transmitted on the route between first resistor value and PSE and PD, and it is corresponding to calculate first resistor value Reserved line loss power.

The power consumed by high standard ethernet netting twine does not refer to: the corresponding reserved line loss power of first resistor value It is worth the difference of corresponding reserved line loss power with second resistance.Due to the line under different power grades, between PSE and PD The electric current of road transmission is different, so, under different power grades, the power consumed by high standard ethernet netting twine is not Together.

The output power thresholding of the ethernet port of PSE refers to: the maximum of the ethernet port of PSE can be connected for its The power that PD is provided, if the power of ethernet port output is higher than output power thresholding, PSE can stop to the Ethernet Port power supply.Since the general power that PSE can be obtained from its power supply is limited, in general, PSE can connect multiple ether of PD for it It nets port and reserves power respectively, be just no longer new PD if reserved general power reaches its upper limit that can be powered by PoE Power supply, or stop powering to the PD of low priority according to PD priority.Therefore output power thresholding is in the power management of PSE It works.Under different power grades, the output power thresholding of the ethernet port of PSE is different.

The maximum consumption power of the ethernet port of PD refers to: the maximum function that PD can be obtained from the ethernet port Rate.If it is more than the maximum consumption power, the power and Ethernet net of PD consumption that PD, which takes the power of electricity from the ethernet port, The sum of the power of line consumption is likely larger than the output power thresholding of the ethernet port of PSE, and PSE is caused to stop to the ethernet side The sum of power and the power of ethernet netting twine consumption of confession electricity P PD consumption are equal to the power that the ethernet port of PSE provides. If the resistance of the ethernet netting twine connected between PSE and PD has reached maximum resistance value, obtained in PD from the ethernet port When power reaches maximum consumption power, the power of ethernet netting twine consumption has also reached the power of reserved line power loss, then The power of PD consumption and the sum of the power of ethernet netting twine consumption reach the output power thresholding of the ethernet port of PSE.It is different Power grade under, the maximum consumption power of the ethernet port of PD is different.

PSE considers that second resistance is worth corresponding reserved line loss power, and the output power thresholding of ethernet port is arranged Refer to: PSE utilizes not the power setting output power thresholding consumed by high standard ethernet netting twine, i.e. the output power thresholding Equal to first resistor be worth corresponding PSE output power thresholding (such as traditional 802.3at PSE setting output power door Limit) difference is subtracted, which subtracts second for the reserved line loss power that first resistor is worth the corresponding power grade The reserved resulting value of line loss power of the corresponding power grade of resistance value.

PD considers that second resistance is worth corresponding reserved line loss power, and the maximum consumption power that ethernet port is arranged is Refer to: PD utilizes not the power setting maximum consumption power consumed by high standard ethernet netting twine, i.e. the maximum consumption power etc. A difference is added in the maximum consumption power that the PD of traditional 802.3at is arranged, which, which is that first resistor value is corresponding, is somebody's turn to do The reserved line loss power of power grade subtracts the reserved line loss power institute that second resistance is worth the corresponding power grade The value obtained.

The resistance of route between PSE and PD is the physical parameter that route itself has.The embodiment of the present invention by PSE or The physical layer modes of the ethernet port operation of PD determine the possible maximum resistance of ethernet netting twine, not practical detection Ethernet The resistance of cable, not additional expense.

Specifically, the ethernet port of PSE is connected with the ethernet port of PD with twisted pair.PSE and PD carries out physics Layer model is negotiated.After physical layer modes are negotiated successfully, PSE and PD respectively can determine the respective ethernet side being connected with other side The currently running physical layer modes of mouth.

PSE and PD respectively according to the currently running physical layer modes of respective ethernet port being connected with other side, is determined Currently running physical layer modes require whether the ethernet netting twine used is high standard ethernet netting twine, and then determine current fortune Whether capable physical layer modes belong to preassigned pattern set.

If belonging to preassigned pattern set, PSE respectively determines the line that the ethernet port being connected with other side is connect with PD The maximum resistance value on road is second resistance value, if being not belonging to predetermined set, the ethernet port of PSE is connected in order to prevent PD power down, PSE respectively determine that the maximum resistance value for the route that the ethernet port being connected with other side is connect is the first electricity with PD Resistance value.

Such as: the ethernet port of PSE and the ethernet port of PD all support 10 gigabit Ethernets, and with twisted pair It is connected.After physical layer modes are negotiated successfully, the respective ethernet port that PSE is connected with PD works in 10G Base-T mould Formula.10G Base-T mode requires at least to use 6 class cables, the then current fortune for the respective ethernet port that PSE is connected with PD Capable physical layer modes belong to preassigned pattern set.At this point, PSE respectively determines that its connected ethernet port is connect with PD Route maximum resistance value be 6.7ohm.

Another example is: if the ethernet port of PSE supports 10 gigabit Ethernets, but the ethernet port of PD only supports Ji Bit Ethernet (English: Gigabit Ethernet), and be connected with twisted pair.After physical layer modes are negotiated successfully, PSE and PD connected respective ethernet port works in 1G Base-T mode or 1G Base-TX mode.1G Base-T mode is wanted It asks at least using 5 class cables, and 1G Base-TX mode requires at least to use 6 class cables.

If the respective ethernet port that PSE is connected with PD works in 1G Base-TX mode, PSE is connected with PD The currently running physical layer modes of respective ethernet port belong to preassigned pattern set.At this point, PSE and PD is respectively determined The maximum resistance value for the route that its connected ethernet port is connected is 6.7ohm.

If the respective ethernet port that PSE is connected with PD works in 1G Base-T mode, PSE is connected with PD The currently running physical layer modes of respective ethernet port are not belonging to preassigned pattern set.At this point, PSE and PD is respectively determined The maximum resistance value for the route that its connected ethernet port is connected is 20ohm (Type 1) or 12.5ohm (Type 2).

The embodiment of the present invention then proposes that the maximum resistance of the route between PSE and PD is less than the of first resistor value In the case where two resistance values, PSE or PD is allowed to utilize the power not consumed by high standard ethernet netting twine.

Specifically, belong in the currently running physical layer modes of the ethernet port of the ethernet port of PSE or PD When preassigned pattern set, the maximum resistance value of the route between PSE and PD is second resistance value, second resistance value can be disappeared The power of consumption is as reserved line loss power.Because second resistance value is less than first resistor value, in the ethernet side of PSE The currently running physical layer modes of the ethernet port of mouth or PD belong to reserved line loss power when preassigned pattern set Reduced compared to line loss power is reserved as defined in PoE standard, the reserved line loss power of reduction is not high Standard ethernet cable consumption power, the power not consumed by high standard ethernet netting twine can to PSE using and also to PD is used.

If the power not consumed by high standard ethernet netting twine is used to PSE, PSE can reduce the Ethernet of PSE The output power thresholding of port.Such as: the output power thresholding of the ethernet port of PSE is changed from the first output power thresholding For the second output power thresholding, the first output power thresholding is if the physical layer modes that the ethernet port of PSE is run do not belong to In preassigned pattern set, the output power thresholding of the ethernet port of PSE, the second output power thresholding is the ether if PSE The physical layer modes of net port operation belong to preassigned pattern set, the output power thresholding of the ethernet port of PSE.Second output Power threshold is less than the first output power thresholding.

Second output power thresholding is equal to the first output power thresholding and subtracts the power not consumed by high standard Ethernet, It is already mentioned above, under different power grades, the power not consumed by high standard ethernet netting twine is different, and different power Under grade, the first output power thresholding is different.So the second output power thresholding is different under different power grades.

If the power not consumed by high standard ethernet netting twine is used to PD, PD can increase the ethernet port of PD Maximum consumption power, such as: the maximum consumption power of the ethernet port of PD is changed into second and disappeared from the first consumption power Wasted work rate, the first consumption power is if the physical layer modes that the ethernet port of PD is run are not belonging to preassigned pattern set, PD Ethernet port maximum consumption power, second consumption power be if the physical layer modes category that the ethernet port of PD is run In preassigned pattern set, the maximum consumption power of the ethernet port of PD.Second consumption power is greater than the first consumption power.

Second consumption power be equal to the first consumption power and the power that is not consumed by high standard Ethernet and, above Through illustrating, under different power grades, the power not consumed by high standard ethernet netting twine is different, and different power grades Under, the first consumption power is different.So the second consumption power threshold is different under different power grades.

During the first is realized, it can specify that not defaulted by the power that high standard ethernet netting twine consumes and give PSE utilization.If PSE determines that the currently running physical layer modes of the ethernet port of PSE belong to preassigned pattern set, and PSE is without further sentencing It is disconnected, directly utilize the power not consumed by high standard ethernet netting twine.The power that PSE will not consumed by high standard ethernet netting twine Other ethernet ports of PSE are distributed to, such PSE can provide electric energy for more PD.

Under above situation, PD default does not utilize the power not consumed by high standard ethernet netting twine.That is, even if PD Determine that the currently running physical layer modes of the ethernet port of PD belong to preassigned pattern set, PD is not utilized not by high standard yet The power of ethernet netting twine consumption, i.e., according to 802.3at standard setting maximum consumption power.

However, there are PSE's in the case where not defaulted by the power that high standard ethernet netting twine consumes to PSE utilization Ethernet port is not enabled on the scene using the power not consumed by high standard ethernet netting twine.The reason of being specifically not enabled on may Be: PSE itself lacks to the support using the power not consumed by high standard ethernet netting twine.The reason of being not enabled on it is also possible to It is: although PSE itself supports that, using the power not consumed by high standard ethernet netting twine, PSE is not enabled on using not high The power or PSE of standard ethernet cable consumption, which are not enabled on the ethernet port to utilize, not to be consumed by high standard ethernet netting twine Power.

Under such a scenario, the ethernet port of PSE is made not using the power not consumed by high standard ethernet netting twine Success rate waste.Optionally, it in order to avoid power dissipation, is not used by the power that high standard ethernet netting twine consumes by PD.Cause This, following steps can also be performed after executing step 201 in PD:

The PD determines that the PSE is not enabled on and utilizes the power not consumed by the high standard ethernet netting twine.Not by In the case that the power of high standard ethernet netting twine consumption is defaulted to PSE utilization, only when the determination is set up, PD just executes step Rapid 202.

Specifically, do not defaulted by the power that high standard ethernet netting twine consumes utilized to PSE in the case where, PD can be with Judge whether PSE is enabled using the power not consumed by high standard ethernet netting twine, if PSE is not enabled on, by PD using not The power consumed by high standard ethernet netting twine is utilized by PSE and is not consumed by high standard ethernet netting twine if PSE is enabled Power.In second of realization, it can specify that not defaulted by the power that high standard ethernet netting twine consumes and give PD utilization.If PD Determine that the currently running physical layer modes of the ethernet port of PD belong to preassigned pattern set, PD is without further judgement, directly Utilize the power not consumed by high standard ethernet netting twine.The ethernet port consumption of PD is not consumed by high standard ethernet netting twine Power, the ethernet port of such PD can consume bigger power, improve power utilization rate.

Under above situation, PSE default does not utilize the power not consumed by high standard ethernet netting twine.That is, even if PSE determines that the currently running physical layer modes of the ethernet port of PSE belong to preassigned pattern set, PSE do not utilize yet not by The power of high standard ethernet netting twine consumption, i.e., according to 802.3at standard setting output power thresholding.

Similarly, do not defaulted by power that high standard ethernet netting twine consumes utilized to PD in the case where, there are PD with The reason of too net port is not enabled on the scene using the power not consumed by high standard ethernet netting twine, is specifically not enabled on may Be: PD itself lacks to the support using the power not consumed by high standard ethernet netting twine.Such as PD be 1 PD of Type or 2 PD of Type, then PSE can determine that PD itself lacks to the support using the power not consumed by high standard ethernet netting twine. The reason of being not enabled on it is also possible that: although PD itself is supported using the power that is not consumed by high standard ethernet netting twine, PD is not enabled on to utilize and is not enabled on the ethernet port using not high by power or PD that high standard ethernet netting twine consumes The power of standard ethernet cable consumption.Under such a scenario, the ethernet port of PD does not utilize not by high standard Ethernet The power of cable consumption, causes power dissipation.Optionally, it in order to avoid power dissipation, is not consumed by high standard ethernet netting twine Power can be used by PSE.Therefore, following steps can also be performed after executing step 101 in PSE:

The PSE determines that the PD is not enabled on and utilizes the power not consumed by the high standard ethernet netting twine.Not by In the case that the power of high standard ethernet netting twine consumption is defaulted to PD utilization, only when the determination is set up, PSE just executes step Rapid 102.

Specifically, do not defaulted by the power that high standard ethernet netting twine consumes utilized to PD in the case where, PSE can be with Judge whether PD enabled using the power not consumed by high standard ethernet netting twine, if PD is not enabled on, by PSE using not by The power of high standard ethernet netting twine consumption utilizes the function not consumed by high standard ethernet netting twine by PD if PD is enabled Rate.

During the third is realized, default can be determined using not by high standard Ethernet in conjunction with the power grade of Power over Ethernet The equipment of the power of cable consumption.For example, when power grade belongs to the first power grade set, default allow PSE using not by High standard ethernet netting twine consumption power, when power grade belongs to the second power grade set, default allow PD using not by The power of high standard ethernet netting twine consumption, the second power grade set and the first power grade intersection of sets integrate as empty set.The One power grade set and the second power grade union of sets collection may include the power grade of all possible Power over Ethernet, It can not also include the power grade of all possible Power over Ethernet.

Therefore, when the power grade belongs to the first power grade set, PSE executes step 102, specifically includes: institute State PSE and consider the corresponding reserved line loss power of the second resistance value, be arranged it is corresponding with the power grade described in Net very much the output power thresholding of port.

When the power grade belongs to the second power grade set, PSE does not execute step 102, and executes following steps: The PSE considers that the first resistor is worth corresponding reserved line loss power, is arranged corresponding with the power grade described The output power thresholding of ethernet port.

Similarly, when power grade belongs to the second power grade set, default allows PD using not by high standard Ethernet In the case where the power of cable consumption, there are the ethernet ports of PD to be not enabled on what utilization was not consumed by high standard ethernet netting twine The scene of power.Under such a scenario, the ethernet port of PD is using the power not consumed by high standard ethernet netting twine, Cause power dissipation.Optionally, in order to avoid power dissipation, the power not consumed by high standard ethernet netting twine can be by PSE It uses.

Therefore, when the power grade belongs to the second power grade set, and the PD is not enabled on using not described When the power of high standard ethernet netting twine consumption, PSE executes step 102, specifically includes: the PSE considers the second resistance It is worth corresponding reserved line loss power, the output power door of the ethernet port corresponding with the power grade is set Limit.

When the power grade belongs to the second power grade set, and the PD it is enabled using not by the high standard with Too the power of net cable consumption when, PSE does not execute step 102, and executes following steps: the PSE considers the first resistor It is worth corresponding reserved line loss power, the output power door of the ethernet port corresponding with the power grade is set Limit.Similarly, when the power grade belongs to the second power grade set, PD executes step 202, and specifically include: the PD is examined Consider the corresponding reserved line loss power of the second resistance value, the ethernet port corresponding with the power grade is set Maximum consumption power.

When the power grade belongs to the first power grade set, PD does not execute step 202, and executes following steps: institute It states PD and considers the corresponding reserved line loss power of the first resistor value, the ether corresponding with the power grade is set Net the maximum consumption power of port.

Similarly, when power grade belongs to the first power grade set, default allows PSE using not by high standard Ethernet In the case where the power of cable consumption, utilization is not enabled on there are the ethernet port of PSE and is not consumed by high standard ethernet netting twine Power scene.Under such a scenario, the ethernet port of PSE does not utilize the function not consumed by high standard ethernet netting twine Rate causes power dissipation.Optionally, in order to avoid power dissipation, the power that is not consumed by high standard ethernet netting twine can be by PD is used.

Therefore, when the power grade belongs to the first power grade set, and the PSE is not enabled on using not described When the power of high standard ethernet netting twine consumption, PD executes step 202, specifically includes: the PD considers the second resistance value The maximum consumption power of the ethernet port corresponding with the power grade is arranged in corresponding reserved line loss power.

When the power grade belongs to the first power grade set, and the PSE is enabled using not by the high standard When the power of ethernet netting twine consumption, PD does not execute step 202, and executes following steps: the PD considers the first resistor It is worth corresponding reserved line loss power, the maximum consumption function of the ethernet port corresponding with the power grade is set Rate.

In 4th kind of realization, it can be not provided with default rule, and passed through in the LLDP frame after transmitting extended by PSE and PD Field, which negotiates to determine, utilizes the power not consumed by high standard ethernet netting twine by which side.After being extended in the embodiment of the present invention Field in LLDP frame includes one or more of following two field: powering mode enables field and ownership field.

Whether the powering mode enables field enabled using not by the high standard for characterizing the PD or PSE The power of ethernet netting twine consumption.

The ownership field is for characterizing whether the PD or PSE requires using not by the high standard Ethernet The ownership of the power of cable consumption.

Powering mode enables field and is made of at least one bit, may be made of 1 bit, 2 bits form, or Multiple bit compositions.The enabled field of powering mode can be one TLV of increase or powering mode enables field and can be embedded in In other TLV.

If powering mode enables field and is made of 1 bit, the bit indicate PD or PSE it is whether enabled using not by The power of the high standard ethernet netting twine consumption, if enabled, the value of the bit is 1, if do not enabled, the bit Value is 0.

It is made of if powering mode enables field 2 bits, one of bit indicates whether PD is enabled using not The power consumed by the high standard ethernet netting twine, if enabled, the value of the bit is 1, if do not enabled, the bit Value be 0.Another bit indicates whether PSE is enabled using the power not consumed by the high standard ethernet netting twine, if Enabled, then the value of the bit is 1, if do not enabled, the value of the bit is 0.

Table 1 is please referred to, table 1 is a kind of possible structure of the enabled field of powering mode in the embodiment of the present invention.Power supply Mode enables field and is made of 8 bits, least significant bit (English: least significant bit, abbreviation: LSB), i.e., and the 0th Bit indicates whether PD or PSE is enabled and utilizes the power not consumed by the high standard ethernet netting twine, if enabled, the 0th The value of bit is 1, if do not enabled, the value of the 0th bit is 0.7 bits of residue in 8 bits are reserved, and being worth is 0.

If PD is enabled using the power not consumed by the high standard ethernet netting twine, the expansion that PD will be transmitted to PSE The value of 0th bit of the enabled field of power supply in the LLDP frame after exhibition is set as 1.If PD is not enabled using not by the high standard The power of quasi- ethernet netting twine consumption, then PD compares the 0th of the enabled field of power supply into the LLDP frame after the extension that PSE is transmitted the Special value is set as 0.

Similarly, if PSE is enabled using the power not consumed by the high standard ethernet netting twine, PSE will be passed to PD The value of 0th bit of the enabled field of power supply in the LLDP frame after defeated extension is set as 1.If PSE it is not enabled using not by The power of the high standard ethernet netting twine consumption, then the power supply into the LLDP frame after the extension that PD is transmitted is enabled word by PSE The value of 0th bit of section is set as 0.

Table 1 enables a kind of possible structure of field for powering mode

By taking table 1 powers enabled field including 1 bit as an example, it is assumed that PD receives the LLDP frame of the extension of PSE transmission, expands The powering mode in LLDP frame after exhibition enables to be set as enabled, indicates that PSE is enabled using not by the high standard Ethernet net The power of line consumption；On the contrary, if being set as not enabling, then it represents that PSE is not enabled on using using not by the high standard ether The power of net cable consumption.

Similarly, it is assumed that PSE receives the extension LLDP frame of PD transmission, and the powering mode in LLDP frame after extension is enabled It is set as enabled, indicates that the PD is enabled using using not by the power of high standard ethernet netting twine consumption；On the contrary, if setting It is set to and does not enable, then it represents that the PD, which is not enabled on, utilizes the power not consumed by the high standard ethernet netting twine.

Table 2 is please referred to, table 2 is the alternatively possible structure of the enabled field of powering mode in the embodiment of the present invention.For Power mode enables field and is made of 8 bits, and the 0th bit of lowest order indicates whether PD is enabled using not by the high standard ether The power of net cable consumption, if enabled, the value of the 0th bit is 1, if do not enabled, the value of the 0th bit is 0.Secondary low level The 1st bit indicate whether PSE enabled and utilize the power not consumed by the high standard ethernet netting twine, if enabled, the 1st The value of bit is 1, if do not enabled, the value of the 1st bit is 0.6 bits of residue in 8 bits are reserved, and being worth is 0.

2 powering mode of table enables a kind of possible structure of field

Table 3 is please referred to, table 3 is a kind of possible structure of the ownership field in the embodiment of the present invention.Ownership field It is made of 8 bits, the 0th bit of lowest order indicates whether PD requires to utilize the power not consumed by high standard ethernet netting twine Ownership, if desired, then the value of the 0th bit is 1, if do not required, the value of the 0th bit is 0.1st bit of secondary low level Indicate whether PSE requires the ownership using the power not consumed by high standard ethernet netting twine, if desired, then the 1st bit Value be 1, if do not required, the value of the 1st bit is 0.6 bits of residue in 8 bits are reserved, and being worth is 0.

If PD requires the ownership using the power not consumed by high standard ethernet netting twine, PD will be transmitted to PSE Extension after LLDP frame in the value of the 0th bit of ownership field be set as 1, if PD is not required using not by high standard The ownership of the power of ethernet netting twine consumption, then PD is by the ownership field into the LLDP frame after the extension that PSE is transmitted The value of 0th bit is set as 0.Wherein, PD requires the ownership using the power not consumed by high standard ethernet netting twine, default It indicates that PD is enabled and utilizes the power not consumed by the high standard ethernet netting twine.

Similarly, if PSE is required using the ownership of power not consumed by high standard ethernet netting twine, PSE will be to The value of 1st bit of the ownership field in LLDP frame after the extension of PD transmission is set as 1, if PSE is not required using not The ownership of the power consumed by high standard ethernet netting twine, then PSE will be all into the LLDP frame after the extension that PD is transmitted The value for weighing the 1st bit of field is set as 0.Wherein, PSE requires the institute using the power not consumed by high standard ethernet netting twine It has the right, default indicates that PSE is enabled and utilizes the power not consumed by the high standard ethernet netting twine.

A kind of possible structure of 3 ownership field of table

Since the field in the LLDP frame after extension includes one or more of following two field: powering mode is enabled Field and ownership field, so the difference for the field for including below according to the LLDP frame after extension, realizes the third and distinguish It is illustrated.

The case where for only including ownership field in the LLDP frame after extension, if only having a Fang Yaoqiu in PSE and PD It (hereinafter will be " it is required that using not by high standard Ethernet using the ownership for the power not consumed by high standard ethernet netting twine The ownership of the power of cable consumption " is referred to as " it is required that ownership "), then negotiation result are as follows: not by high standard ethernet netting twine The power of consumption returns that Fang Liyong of requirement ownership.Such as: PSE requires ownership, and PD does not require ownership, then negotiates As a result are as follows: do not return PSE to utilize by the power that high standard ethernet netting twine consumes.

If PSE and PD are required to ownership, negotiation result determines that pre-defined rule may is that not according to pre-defined rule Returned that PSE is utilized or pre-defined rule may is that not by high standard ethernet netting twine by the power that high standard ethernet netting twine consumes The power of consumption return PD utilize or pre-defined rule may is that can in conjunction with Power over Ethernet power grade determination it is not high Which side the power of standard ethernet cable consumption returns utilize.For example, when power grade belongs to the first power grade set, not PSE is returned to utilize by the power that high standard ethernet netting twine consumes, it is not high when power grade belongs to the second power grade set The power of standard ethernet cable consumption returns PD to utilize, and the second power grade set and the first power grade intersection of sets collection are sky Collection.First power grade set and the second power grade union of sets collection may include the power of all possible Power over Ethernet Grade can not also include the power grade of all possible Power over Ethernet.

For only including the case where that powering mode enables field in the LLDP frame after extension, if either one in PSE and PD It is enabled using the power not consumed by the high standard ethernet netting twine (hereinafter will " it is enabled using not by the high standard with The too power of net cable consumption " is referred to as " enabled "), or if PSE and PD are enabled, negotiation result are as follows: according to aforementioned The first, which is realized to the third, realizes determine which side utilization do not returned by the power that high standard ethernet netting twine consumes.

For including the case where that powering mode enables field and ownership field, utilizes ownership in the LLDP frame after extension Field determines negotiation result.

It is above-mentioned the first to the third realize in any one in, can further increase by after transmitting extended LLDP frame in field negotiate determine by which side using do not consumed by high standard ethernet netting twine power the step of.Though that is, Right PoE system defaults the power not consumed by high standard ethernet netting twine by some equipment utilization, but it is expected to change above-mentioned silent The equipment for recognizing the result of rule can be attempted to obtain using not by high standard ethernet netting twine by the LLDP frame after transmitting extended The ownership of the power of consumption.It is identical in specific method and the 4th kind of realization.

For example, in the case where PoE system is defaulted by PD using the power not consumed by high standard ethernet netting twine, That is: in the case where default ownership returns PD, PSE can send the LLDP frame after extension to PD, will be in the LLDP frame after extension Ownership field be set as PSE require ownership.After PD receives the LLDP frame after the extension of PSE transmission, discovery PSE requires institute It has the right, at this point, dividing following two situation:

If PD also requires ownership, the LLDP frame after extension is sent to PSE, by the ownership in the LLDP frame after extension Field is set as PD requirement ownership, and after PSE receives the LLDP frame after the extension of PD transmission, discovery PD requires ownership, and It is currently that default ownership returns PD, therefore ownership still returns PD.PSE can be sent to PD to the LLDP frame after the extension received Response sets PSE for ownership field in response and does not require ownership or PSE that can not also send to PD to receiving Extension after LLDP frame response.

If PD does not require ownership, the LLDP frame after extension is sent to PSE, by the ownership in the LLDP frame after extension Field is set as PD and does not require ownership, and after PSE receives the LLDP frame after the extension of PD transmission, discovery PD does not require to own Power, is considered as PD and relinquishes possession, therefore ownership returns PSE.

In above-mentioned example, if requiring ownership, the ownership of default using the LLDP frame discovery PSE and PD after extension Ownership can be different with the case where not sending the LLDP frame after extending.For example, in the first realization (not by high standard Ethernet net The power of line consumption, which is defaulted, gives PSE utilization) in, if PD, which is used, requires ownership using the LLDP frame after extension, if PSE is also wanted Ownership is sought, when default rule at this time be can be all through the LLDP frame requirement ownership after extension, default is utilized to PD.

It is aforementioned the first realize to the 4th kind realize in, it is noted that " PD determine the PSE be not enabled on using not by The power of high standard ethernet netting twine consumption ", below to PD how to determine PSE be not enabled on using not by the high standard with The method of the too power of net cable consumption is described in detail.

First method: it is determined using the LLDP frame after extension.

Specifically, if PD receives the LLDP frame after the extension that PSE is sent, the power supply mould in LLDP frame after extension Formula enables field and is PSE not enabled (such as: when powering mode enables field and be made of 2 fields) or does not enable that then PD is determining PSE, which is not enabled on, utilizes the power not consumed by the high standard ethernet netting twine.

Similar, if PD receives the LLDP frame after the extension that PSE is sent, the powering mode in LLDP frame after extension Enabled field is that PSE does not require ownership, then PD needs further to enable field according to powering mode to determine the whether enabled benefit of PSE With the power not consumed by the high standard ethernet netting twine.

PSE is similar with the above method using the implementation method that the LLDP frame after extension determines that PD is not enabled on.

Second method: if PSE determines that PD is 2 PD of Type 1 PD or Type in the classification stage, it is determined that PD is not propped up It holds using the power not consumed by the high standard ethernet netting twine, i.e. PD is not enabled on using not by the high standard Ethernet net The power of line consumption.Equally, if PD determines that PSE is 2 PSE of Type 1 PD or Type in the classification stage, it is determined that PSE is not Support that using the power not consumed by the high standard ethernet netting twine, i.e. PSE is not enabled on using not by the high standard ether The power of net cable consumption.

Based on the same technical idea, the embodiment of the invention also provides a kind of PSE, referring to FIG. 4, Fig. 4 is the present invention A kind of possible hardware structure diagram for the PSE that embodiment provides.PSE includes: chipset, ethernet port, transformer and PHY core Piece, wherein chipset includes processor and PSE chip.As shown in figure 4, processor is connected to PSE chip and PHY chip, PSE Chip is connected to transformer, and ethernet port is connected to transformer, and transformer is connected to PHY chip.

The all parts of PSE are described briefly first.

Ethernet port, for connecting PD by ethernet netting twine.

Transformer, for coupling the data code flow between electric energy, PSE and the PD that PSE is transmitted to PD.Such as center can be used Tapped transformer (English: center-tapped transformer).

PHY chip, for the coding and decoding of data-signal, port negotiation, serioparallel exchange of data etc..

PSE chip is designed to meet the chip of the PSE function in PoE protocol requirement, can usually provide detection (English: detection) function.Some PSE chips can also provide classification (English: classification) function.It is common PSE chip have the MAX5952 and MAX5971B of U.S. letter integrated products (English: Maxim Integrated), Texas Instrument's (English Text: Texas Instruments) TPS23841 and TPS23851, and insult Li Erte (English: Linear Technology LTC4266, LTC4270, LTC4274 and LTC4290 etc.).

Processor can be central processing unit (English: central processing unit, abbreviation: CPU), at network It manages device (English: network processor, abbreviation: NP), microcontroller (English: microcontroller unit, abbreviation: MCU), hardware chip and any combination thereof.Above-mentioned hardware chip can be specific integrated circuit (English: application- Specific integrated circuit, abbreviation: ASIC), programmable logic device (English: programmable logic Device, abbreviation: PLD) or combinations thereof.Above-mentioned PLD can be Complex Programmable Logic Devices (English: complex Programmable logic device, abbreviation: CPLD), field programmable gate array (English: field- Programmable gate array, abbreviation: FPGA), Universal Array Logic (English: generic array logic, contracting Write: GAL) or any combination thereof.

Processor can use inter-integrated circuit (English: Inter-Integrated Circuit, abbreviation: IIC) bus It is connected to PSE chip.

In the embodiment of the present invention, PHY chip stores the currently running of the ethernet port of the PSE after port negotiation Physical layer modes.The memory of processor or individual memory are stored with preassigned pattern set, the preassigned pattern set Including requiring the physical layer modes using high standard ethernet netting twine.Processor can from its own memory or individually Memory obtains preassigned pattern set.Individual memory may include volatile memory (English: volatile Memory), for example, random access memory (English: random-access memory, abbreviation: RAM)；Memory also can wrap Include nonvolatile memory (English: non-volatile memory), such as read-only memory (English: read-only Memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, contracting Write: HDD) or solid state hard disk (English: solid-state drive, abbreviation: SSD)；Memory can also include mentioned kind The combination of memory.

Processor judges whether currently running physical layer modes belong to preassigned pattern set.If currently running physics Layer model belongs to preassigned pattern set, then chipset is according to the power grade of the Power over Ethernet of the ethernet port and first The output power thresholding of ethernet port is arranged in output power thresholding table, if currently running physical layer modes be not belonging to it is pre- Mould-fixed set, then chipset is according to the power grade and the second output power thresholding of the Power over Ethernet of the ethernet port The output power thresholding of ethernet port is arranged in table.

It wherein, include multiple power grades and multiple output power thresholdings, and multiple function in the first output power thresholding table Rate grade is mapped as dijection to the multiple output power thresholding.Likewise, including multiple in the second output power thresholding table Power grade and multiple output power thresholdings, and multiple power grades are mapped as dijection to the multiple output power thresholding. Multiple power grades in multiple power grades and the second output power thresholding table in first output power thresholding table distinguish phase Together.

First output power thresholding table corresponds to second resistance value, that is to say, that defeated in the first output power thresholding table Out power threshold be equal to first resistor be worth corresponding PSE output power thresholding (such as traditional 802.3at PSE setting Output power thresholding) difference is subtracted, which is the reserved line loss function that first resistor is worth the corresponding power grade Rate subtracts the reserved resulting value of line loss power that second resistance is worth the corresponding power grade.

Second output power thresholding table corresponds to first resistor value, that is to say, that defeated in the first output power thresholding table Out power threshold be calculated using first resistor value (part that wherein power grade is 0-4 grade is equal to traditional The output power thresholding of the PSE setting of 802.3at).

Belong to the corresponding output power thresholding of power grade of the first power grade set in first output power thresholding table, Less than the corresponding output power thresholding of corresponding power grade in the second output power thresholding table.That is, for belonging to The same power grade of first power grade set, the power grade corresponding output work in the first output power thresholding table Rate thresholding is less than the power grade corresponding output power thresholding in the second output power thresholding table.

Belong to the corresponding output power thresholding of power grade of the second power grade set in first output power thresholding table Equal to the corresponding output power thresholding of corresponding power grade in the second output power thresholding table.That is, for belonging to The second same power grade of power grade set, the power grade corresponding output power in the first output power thresholding table The corresponding output power thresholding in the second output power thresholding table is equal with the power grade for thresholding.

Wherein, the second power grade set and the first power grade intersection of sets integrate as empty set, the first power grade set It may include the power grade of all possible Power over Ethernet with the second power grade union of sets collection, can not also include institute The power grade of possible Power over Ethernet.As a special case, if what regulation was not consumed by high standard ethernet netting twine Power is defaulted to be utilized to PSE, then the first power grade set includes the power grade of all possible Power over Ethernet, and second Power grade collection is combined into empty set.That is, the output work for the power grade of each that the first output power thresholding table includes Rate thresholding is both less than the power grade corresponding output power thresholding in the second output power thresholding table.

Different according to the component of the first output power thresholding table of storage and the second output power thresholding table, PSE executes this hair The process for the power management method that bright embodiment proposes is different.

The first situation: the first output power thresholding table and the second output power thresholding table are stored in PSE chip.

When processor determines that currently running physical layer modes belong to preassigned pattern set, processor can be to PSE chip Instruction is sent, instruction is used to indicate PSE chip according to the power grade of the Power over Ethernet of the ethernet port and considers the The corresponding reserved line loss power of two resistance values, is arranged the output power thresholding of the ethernet port.PSE chip receiving area The instruction that device is sent is managed, is then executed instruction, according to the power grade of the Power over Ethernet of ethernet port and the first output work The output power thresholding of ethernet port is arranged in rate thresholding table.

When processor determines that currently running physical layer modes are not belonging to preassigned pattern set, processor can be to PSE core Piece sends instruction, and instruction is used to indicate power grade and consideration of the PSE chip according to the Power over Ethernet of the ethernet port First resistor is worth corresponding reserved line loss power, and the output power thresholding of the ethernet port is arranged.PSE chip receives The instruction that processor is sent, then executes instruction, and is exported according to the power grade of the Power over Ethernet of ethernet port and second The output power thresholding of ethernet port is arranged in power threshold table.

Wherein, processor can instruct instruction PSE chip that ethernet side is arranged using the first output power thresholding table with IIC The output power thresholding of mouth.

Second situation: the first output power thresholding table and the storage of the second output power thresholding table are in memory.Storage Device can integrate can also be individually present in the processor.

Processor obtains the power grade of ethernet port from PSE chip.Processor can be instructed with IIC and read PSE (such as register 0Ch, h therein are English hexadecimal to the register of the power grade of the storage ethernet port of chip Abbreviation) in ethernet port power grade.

After processor determines that currently running physical layer modes belong to preassigned pattern set, processor is defeated using first Power threshold table determines the corresponding output power thresholding of power grade out.Processor can instruct the output that will be determined with IIC Power threshold is configured in PSE chip.Processor can also instruct the ethernet port read in PSE chip in real time with IIC Voltage and current (such as register 30h to 3Fh, h therein are the abbreviations of English hexadecimal) is to obtain ethernet port Realtime power, and the realtime power of the output power thresholding management ethernet port according to ethernet port.

After processor determines that currently running physical layer modes are not belonging to preassigned pattern set, processor utilizes second Output power thresholding table determines the corresponding output power thresholding of power grade.

In the first above-mentioned situation and second situation it is any in, if passed through after transmitting extended by PSE and PD Field in LLDP frame negotiates to determine by which side using the power not consumed by high standard ethernet netting twine, then processor or The corresponding output power thresholding of corresponding power grade of ethernet port is arranged according to negotiation result for PSE chip.Negotiation result is By PSE using the power not consumed by high standard ethernet netting twine, then the first output power table setting ethernet port is utilized The corresponding output power thresholding of corresponding power grade, negotiation result are to utilize the function not consumed by high standard ethernet netting twine by PD Rate then utilizes the corresponding output power thresholding of corresponding power grade of the second output power table setting ethernet port.

Therefore, processor is used to generate the Link Layer Discovery Protocol LLDP frame after the extension transmitted to the PD, and receives LLDP frame after the extension of the PD transmission, and the response of the LLDP frame after the extension transmitted to PD transmission to the PD； The field in LLDP frame after the extension of the PD transmission includes one or more of following two field: powering mode is enabled Field and ownership field；Whether the powering mode enables field enabled using not by the high standard for characterizing the PD The power of ethernet netting twine consumption；The ownership field for characterize the PD whether require using not by the high standard with The too ownership of the power of net cable consumption.

Specifically, the first corresponding situation the first output power thresholding table and the second output power thresholding table are stored in In PSE chip, the field in LLDP frame after the extension that processor is transmitted by PD determines the ethernet port of PD setting PD The power not consumed by high standard ethernet netting twine is not utilized when maximum consumption power, and notifies PSE chip, then PSE chip benefit With the corresponding output power thresholding of corresponding power grade of the second output power table setting ethernet port.Determine PD setting PD's Using the power not consumed by high standard ethernet netting twine when the maximum consumption power of ethernet port, and notify PSE chip, then The corresponding output power thresholding of corresponding power grade of ethernet port is arranged using the first output power table for PSE chip.

Corresponding second situation the first output power thresholding table and the storage of the second output power thresholding table in memory, are located The field in LLDP frame after the extension that reason device transmit by PD, determines that the maximum consumption power of the ethernet port of PD is arranged in PD The power that Shi Liyong is not consumed by high standard ethernet netting twine, then processor determines power etc. using the first output power thresholding table The corresponding output power thresholding of grade, the output power thresholding determined is configured in PSE chip.Determine the ether of PD setting PD Using the power not consumed by high standard ethernet netting twine when netting the maximum consumption power of port, then processor utilizes the second output Power threshold table determines the corresponding output power thresholding of power grade, and the output power thresholding determined is configured to PSE chip In.

Based on the same technical idea, the embodiment of the invention also provides a kind of PD, referring to FIG. 5, Fig. 5 is that the present invention is real A kind of possible hardware structure diagram of the PD of example offer is provided.PD includes: chipset, ethernet port, transformer and PHY chip, Wherein, chipset includes processor and PD chip.As shown in figure 5, processor is connected to PD chip and PHY chip, PD chip connects It is connected to transformer, ethernet port is connected to transformer, and transformer is connected to PHY chip.

The all parts of PD are described briefly first.

Ethernet port, for connecting PSE by ethernet netting twine.

PD chip is designed to meet the chip of the PD function in PoE protocol requirement, can usually provide detection (English Text: detection) function.Some PD chips can also provide classification (English: classification) function.

Processor can use inter-integrated circuit (English: Inter-Integrated Circuit, abbreviation: IIC) bus It is connected to PD chip.

Processor judges whether currently running physical layer modes belong to preassigned pattern set.If currently running physics Layer model belongs to preassigned pattern set, then chipset is according to the power grade of the Power over Ethernet of the ethernet port and first The maximum consumption power of ethernet port is arranged in maximum consumption power meter, if currently running physical layer modes be not belonging to it is pre- Mould-fixed set, then chipset is according to the power grade and the second maximum consumption power of the Power over Ethernet of the ethernet port The maximum consumption power of ethernet port is arranged in table.

It wherein, include multiple power grades and multiple maximum consumption power, and multiple function in the first maximum consumption power meter Rate grade is mapped as dijection to the multiple maximum consumption power.Likewise, including multiple in the second maximum consumption power meter Power grade and multiple maximum consumption power, and multiple power grades are mapped as dijection to the multiple maximum consumption power. Multiple power grades in multiple power grades and the second maximum consumption power meter in first maximum consumption power meter distinguish phase Together.

First maximum consumption power meter corresponds to second resistance value, that is to say, that in the first maximum consumption power meter most Big consumption power is equal to first resistor and is worth the maximum consumption power of corresponding PD (such as the PD setting of traditional 802.3at is most Big consumption power) difference is subtracted, which is the reserved line loss power that first resistor is worth the corresponding power grade Subtract the reserved resulting value of line loss power that second resistance is worth the corresponding power grade.

Second maximum consumption power meter corresponds to first resistor value, that is to say, that in the first maximum consumption power meter most Big consumption power be calculated using first resistor value (part that wherein power grade is 0-4 grade is equal to traditional The maximum consumption power of the PD setting of 802.3at).

Belong to the corresponding maximum consumption power of power grade of the first power grade set in first maximum consumption power meter, Less than the corresponding maximum consumption power of corresponding power grade in the second maximum consumption power meter.That is, for belonging to The same power grade of first power grade set, the power grade corresponding maximum in the first maximum consumption power meter disappear Wasted work rate is less than the power grade corresponding maximum consumption power in the second maximum consumption power meter.

Belong to the corresponding maximum consumption power of power grade of the second power grade set in first maximum consumption power meter Equal to the corresponding maximum consumption power of corresponding power grade in the second maximum consumption power meter.That is, for belonging to The second same power grade of power grade set, the power grade corresponding maximum consumption in the first maximum consumption power meter The corresponding maximum consumption power in the second maximum consumption power meter is equal with the power grade for power.

Wherein, the second power grade set and the first power grade intersection of sets integrate as empty set, the first power grade set It may include the power grade of all possible Power over Ethernet with the second power grade union of sets collection, can not also include institute The power grade of possible Power over Ethernet.As a special case, if what regulation was not consumed by high standard ethernet netting twine Power is defaulted to be utilized to PD, then the second power grade set includes the power grade of all possible Power over Ethernet, and first Power grade collection is combined into empty set.That is, the output work for the power grade of each that the first output power thresholding table includes Rate thresholding is both greater than the power grade corresponding output power thresholding in the second output power thresholding table.

Different according to the component of the first maximum consumption power meter of storage and the second maximum consumption power meter, PD executes the present invention The process for the power management method that embodiment proposes is different.

The first situation: the first maximum consumption power meter and the second maximum consumption power meter are stored in PD chip.

When processor determines that currently running physical layer modes belong to preassigned pattern set, processor can be sent out to PD chip Instruction is sent, instruction is used to indicate PD chip according to the power grade of the Power over Ethernet of the ethernet port and considers the second electricity The corresponding reserved line loss power of resistance value, is arranged the maximum consumption power of the ethernet port.PD chip receives processor The instruction of transmission, then executes instruction, according to the power grade of the Power over Ethernet of ethernet port and the first maximum consumption function The maximum consumption power of ethernet port is arranged in rate table.

When processor determines that currently running physical layer modes are not belonging to preassigned pattern set, processor can be to PD chip Instruction is sent, instruction is used to indicate PD chip according to the power grade of the Power over Ethernet of the ethernet port and considers first The corresponding reserved line loss power of resistance value, is arranged the maximum consumption power of the ethernet port.PD chip reception processing The instruction that device is sent, then executes instruction, according to the power grade of the Power over Ethernet of ethernet port and the second output power The maximum consumption power of ethernet port is arranged in thresholding table.

Wherein, processor can instruct instruction PD chip that ethernet side is arranged using the first maximum consumption power meter with IIC The maximum consumption power of mouth.

Second situation: the first maximum consumption power meter and the storage of the second maximum consumption power meter are in memory.Storage Device can integrate can also be individually present in the processor.

Processor obtains the power grade of ethernet port from PD chip.Processor can be instructed with IIC and read PD core (such as register 0Ch, h therein are English hexadecimal to the register of the power grade of the storage ethernet port of piece Abbreviation) in ethernet port power grade.

After processor determines that currently running physical layer modes belong to preassigned pattern set, processor is using first most Big consumption power meter determines the corresponding maximum consumption power of power grade.Processor can instruct the maximum that will be determined with IIC Power configuration is consumed into PD chip.Processor can also instruct the electricity for reading the ethernet port in PSE chip in real time with IIC Pressure and electric current (such as register 30h to 3Fh, h therein are the abbreviations of English hexadecimal) are to obtain ethernet port Realtime power, and the realtime power of the maximum consumption power management ethernet port according to ethernet port.

After processor determines that currently running physical layer modes are not belonging to preassigned pattern set, processor utilizes second Maximum consumption power meter determines the corresponding maximum consumption power of power grade.

In the first above-mentioned situation and second situation it is any in, if passed through after transmitting extended by PSE and PD Field in LLDP frame, which negotiates to determine, utilizes the power not consumed by high standard ethernet netting twine by which side, then processor or PD The corresponding maximum consumption power of corresponding power grade of ethernet port is arranged according to negotiation result for chip.Negotiation result is by PD Using the power not consumed by high standard ethernet netting twine, then the phase of the first maximum consumption power meter setting ethernet port is utilized The corresponding maximum consumption power of power grade is answered, negotiation result is to utilize the function not consumed by high standard ethernet netting twine by PSE Rate then utilizes the corresponding maximum consumption power of corresponding power grade of the second maximum consumption power meter setting ethernet port.

Therefore, processor is used to generate the Link Layer Discovery Protocol LLDP frame after the extension transmitted to the PSE, and receives LLDP frame after the extension of the PSE transmission, and answering for the LLDP frame after the extension transmitted to the PSE is sent to the PSE It answers；The field in LLDP frame after the extension of the PSE transmission includes one or more of following two field: powering mode Enabled field and ownership field；Whether the powering mode enables field enabled using not described for characterizing the PSE The power of high standard ethernet netting twine consumption；The ownership field is for characterizing whether the PSE requires using not described The ownership of the power of high standard ethernet netting twine consumption.

Specifically, the first corresponding situation the first maximum consumption power meter and the second maximum consumption power meter are stored in PD In chip, the field in LLDP frame after the extension that processor is transmitted by PSE determines the ethernet port of PSE setting PSE The power not consumed by high standard ethernet netting twine is not utilized when output power thresholding, and notifies PD chip, then PD chip utilizes The corresponding maximum consumption power of corresponding power grade of second maximum consumption power meter setting ethernet port.Determine that PSE is arranged Using the power not consumed by high standard ethernet netting twine when the output power thresholding of the ethernet port of PSE, and notify PD core Piece, then the corresponding maximum consumption function of corresponding power grade of ethernet port is arranged using the first maximum consumption power meter for PD chip Rate.

Corresponding second situation the first maximum consumption power meter and the storage of the second maximum consumption power meter in memory, are located The field in LLDP frame after the extension that reason device transmit by PSE, determines that the output power of the ethernet port of PSE is arranged in PSE The power that Shi Liyong is not consumed by high standard ethernet netting twine, then processor determines power etc. using the first maximum consumption power meter The corresponding maximum consumption power of grade, the output power thresholding determined is configured in PD chip.Determine PSE setting PSE with Using the power not consumed by high standard ethernet netting twine when netting very much the output power thresholding of port, then processor using second most Big consumption power meter determines the corresponding maximum consumption power of power grade, by the maximum consumption power configuration determined to PD chip In.

Based on the same technical idea, the embodiment of the invention also provides a kind of PD, referring to FIG. 6, Fig. 6 is that the present invention is real The alternatively possible hardware structure diagram of the PD of example offer is provided.PD includes: PD chip, ethernet port, transformer and physical layer PHY chip.As shown in fig. 6, PD chip is connected to transformer and PHY chip, ethernet port is connected to transformer, and transformer connects It is connected to PHY chip.

PD chip is connect using special pin with PHY chip.

The all parts of PD are described briefly first.

Ethernet port, for connecting PSE by ethernet netting twine.

Different from PD shown in fig. 5, PD shown in fig. 6 does not have processor.

In the embodiment of the present invention, PHY chip stores the currently running of the ethernet port of the PSE after port negotiation Physical layer modes.

PHY chip is stored with preassigned pattern set, and the preassigned pattern set includes requiring to use high standard Ethernet net The physical layer modes of line.PHY chip judges whether currently running physical layer modes belong to preassigned pattern set.If current fortune Capable physical layer modes belong to preassigned pattern set, then PHY chip sends the currently running physical layer modes to PD chip Belong to the notice of the preassigned pattern set, PD chip is according to the power grade of the Power over Ethernet of the ethernet port and The maximum consumption power of ethernet port is arranged in one maximum consumption power meter, if currently running physical layer modes are not belonging to Preassigned pattern set, then PD chip is according to the power grade and the second maximum consumption function of the Power over Ethernet of the ethernet port The maximum consumption power of ethernet port is arranged in rate table.

Wherein, PHY chip can indicate that ethernet side is arranged using the first maximum consumption power meter in PD chip with low level The maximum consumption power of mouth.

Based on the same technical idea, the embodiment of the invention also provides a kind of PSE, referring to FIG. 7, Fig. 7 is the present invention The functional diagram for the PSE that embodiment provides.PSE includes:

Physical layer modes determination unit 71, the currently running physical layer mould of the ethernet port for determining the PSE Formula belongs to preassigned pattern set, and the preassigned pattern set includes the physical layer modes for requiring to use high standard ethernet netting twine；

Setting unit 72, for according to the power grade of the Power over Ethernet of the ethernet port and considering second resistance It is worth corresponding reserved line loss power, the output power thresholding of the ethernet port is set, wherein the second resistance value The maximum resistance value of route between the PSE and powered device PD, the second resistance value is less than first resistor value, described First resistor value is if the physical layer modes of ethernet port operation are not belonging to the preassigned pattern set, the route Maximum resistance value.

Optionally, the PSE further include:

Optionally, the setting unit 72 is used for:

Optionally, the setting unit 72 is also used to:

Optionally, the PSE further include:

Based on the same technical idea, the embodiment of the invention also provides a kind of PD, referring to FIG. 8, Fig. 8 is that the present invention is real The functional diagram of the PD of example offer is provided.PD includes:

Physical layer modes determination unit 81, the currently running physical layer modes of the ethernet port for determining the PD Belong to preassigned pattern set, the preassigned pattern set includes the physical layer modes for requiring to use high standard ethernet netting twine；

Setting unit 82, for according to the power grade of the Power over Ethernet of the ethernet port and considering second resistance It is worth corresponding reserved line loss power, the maximum consumption power of the ethernet port is set, wherein the second resistance value The maximum resistance value of route between the PD and power supply unit PSE, the second resistance value is less than first resistor value, described First resistor value is if the physical layer modes of ethernet port operation are not belonging to the preassigned pattern set, the route Maximum resistance value.

Optionally, the PD further include:

Optionally, the setting unit 82 is used for:

Optionally, the setting unit 82 is also used to:

Optionally, the PD further include:

It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more, The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.) Formula.

The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies Within, then the application is also intended to include these modifications and variations.

Claims

1. a kind of power management method of Power over Ethernet characterized by comprising

Power supply unit PSE determines that the currently running physical layer modes of the ethernet port of the PSE belong to preassigned pattern set, The preassigned pattern set includes the physical layer modes for requiring to use high standard ethernet netting twine；

The PSE is according to the power grade of the Power over Ethernet of the ethernet port and considers that second resistance value is corresponding reserved The output power thresholding of the ethernet port is arranged in line loss power, wherein the second resistance value be the PSE with The maximum resistance value of route between powered device PD, the second resistance value are less than first resistor value, the first resistor value If the physical layer modes for ethernet port operation are not belonging to the preassigned pattern set, the maximum resistance of the route Value.

2. the method as described in claim 1, which is characterized in that the output power of the ethernet port is arranged in the PSE Before thresholding, the method also includes:

3. the method as described in claim 1, which is characterized in that the PSE is according to the Power over Ethernet of the ethernet port Power grade and consider the corresponding reserved line loss power of the second resistance value, the output of the ethernet port is set Power threshold, comprising:

When the power grade belongs to the first power grade set, the PSE considers that the second resistance value is corresponding reserved The output power thresholding of the ethernet port corresponding with the power grade is arranged in line loss power.

4. method as claimed in claim 3, which is characterized in that the PSE is according to the Power over Ethernet of the ethernet port Power grade and consider the corresponding reserved line loss power of the second resistance value, the output of the ethernet port is set Power threshold, further includes:

When the power grade belongs to the second power grade set, and the PD is not enabled on using not by the high standard ether When the power of net cable consumption, the PSE considers that the second resistance is worth corresponding reserved line loss power, setting with it is described The output power thresholding of the corresponding ethernet port of power grade, wherein the second power grade set and described the One power grade intersection of sets integrates as empty set.

5. the method as described in any in Claims 1-4, which is characterized in that the ethernet port is arranged in the PSE Before output power thresholding, the method also includes:

The field in Link Layer Discovery Protocol LLDP frame after the extension that the PSE is transmitted by the PD, determines that the PD is set The power not consumed by the high standard ethernet netting twine is not utilized when setting the maximum consumption power of the ethernet port of the PD, Wherein, the field in the LLDP frame after the extension includes one or more of following two field: powering mode enables word Section and ownership field；

The powering mode enables field and is not disappeared by the high standard ethernet netting twine for characterizing whether enabled utilize of the PD The power of consumption；

The ownership field is used to characterize whether the PD to require to utilize the function not consumed by the high standard ethernet netting twine The ownership of rate.

6. a kind of power management method of Power over Ethernet characterized by comprising

Powered device PD determines that the currently running physical layer modes of the ethernet port of the PD belong to preassigned pattern set, institute Stating preassigned pattern set includes the physical layer modes for requiring to use high standard ethernet netting twine；

The PD is according to the power grade of the Power over Ethernet of the ethernet port and considers that second resistance value is corresponding reserved The maximum consumption power of the ethernet port is arranged in line loss power, wherein the second resistance value is the PD and supplies The maximum resistance value of route between electric equipment PSE, the second resistance value are less than first resistor value, and the first resistor value is If the physical layer modes of the ethernet port operation are not belonging to the preassigned pattern set, the maximum resistance of the route Value.

7. method as claimed in claim 6, which is characterized in that the PD setting it is corresponding with the power grade described in Before the maximum consumption power for netting very much port, the method also includes:

8. method as claimed in claim 6, which is characterized in that the PD is according to the Power over Ethernet of the ethernet port Power grade simultaneously considers the corresponding reserved line loss power of the second resistance value, and the maximum that the ethernet port is arranged disappears Wasted work rate, comprising:

When the power grade belongs to the second power grade set, the PD considers that the second resistance is worth corresponding reserved line The maximum consumption power of the ethernet port corresponding with the power grade is arranged in road loss power.

9. method according to claim 8, which is characterized in that the PD is according to the Power over Ethernet of the ethernet port Power grade simultaneously considers the corresponding reserved line loss power of the second resistance value, and the maximum that the ethernet port is arranged disappears Wasted work rate, further includes:

When the power grade belongs to the first power grade set, and the PSE be not enabled on using not by the high standard with Too the power of net cable consumption when, the PD considers that the second resistance is worth corresponding reserved line loss power, setting and institute State the maximum consumption power of the corresponding ethernet port of power grade, wherein the second power grade set with it is described First power grade intersection of sets integrates as empty set.

10. the method as described in claim 6 to 9 is any, which is characterized in that the ethernet port is arranged most in the PD Before big consumption power, the method also includes:

The field in Link Layer Discovery Protocol LLDP frame after the extension that the PD is transmitted by the PSE, determines that the PSE is set The function not consumed by the high standard ethernet netting twine is not utilized when setting the output power thresholding of the ethernet port of the PSE Rate, wherein the field in LLDP frame after the extension includes one or more of following two field: powering mode is enabled Field and ownership field；

The powering mode enables field and is not disappeared by the high standard ethernet netting twine for characterizing whether enabled utilize of the PSE The power of consumption；

The ownership field is used to characterize whether the PSE to require to utilize the function not consumed by the high standard ethernet netting twine The ownership of rate.

11. a kind of power supply unit PSE characterized by comprising

Chipset, ethernet port, transformer and PHY chip, the chipset include processor and PSE chip, institute It states processor and is connected to the PSE chip and the PHY chip, the PSE chip is connected to the transformer, the Ethernet Port is connected to the transformer, and the transformer is connected to the PHY chip；Wherein,

The transformer, for coupling the data code flow between electric energy, the PSE and the PD that the PSE is transmitted to the PD；

The chipset is used to obtain the currently running physical layer modes of the ethernet port in the PHY chip, and For judging whether the physical layer modes belong to preassigned pattern set, the preassigned pattern set includes requiring to use high standard The physical layer modes of ethernet netting twine, when determining that the physical layer modes belong to the preassigned pattern set, according to it is described with It nets very much the power grade of the Power over Ethernet of port and considers the corresponding reserved line loss power of second resistance value, described in setting The output power thresholding of ethernet port, wherein route of the second resistance value between the PSE and powered device PD Maximum resistance value, the second resistance value are less than first resistor value, and the first resistor value is if the ethernet port is transported Capable physical layer modes are not belonging to the preassigned pattern set, the maximum resistance value of the route.

12. PSE as claimed in claim 11, which is characterized in that the PSE chip is also used to:

13. the PSE as described in claim 11 or 12, which is characterized in that the PSE chip is stored with the first output power thresholding Table and the second output power thresholding table, the first output power thresholding table correspond to the second resistance value, and described second is defeated Power threshold table corresponds to the first resistor value out,

It include multiple power grades and multiple output power thresholdings, first output work in the first output power thresholding table The multiple power grade in rate thresholding table is mapped as dijection to the multiple output power thresholding,

It include multiple power grades and multiple output power thresholdings, second output work in the second output power thresholding table The multiple power grade in rate thresholding table is mapped as dijection to the multiple output power thresholding,

It is described more in the multiple power grade and the second output power thresholding table in the first output power thresholding table A power grade difference is identical, and the power grade that the first power grade set is belonged in the first output power thresholding table is corresponding Output power thresholding, be less than the second output power thresholding table in the corresponding output power thresholding of corresponding power grade,

Belong to the corresponding output power thresholding of power grade of the second power grade set in the first output power thresholding table Equal to the corresponding output power thresholding of corresponding power grade in the second output power thresholding table, the second power grade collection It closes and integrates with the first power grade intersection of sets as empty set,

The processor is also used to for judging whether the currently running physical layer modes belong to the preassigned pattern set When determining that the currently running physical layer modes belong to the preassigned pattern set, Xiang Suoshu PSE chip sends instruction, institute It states instruction and is used to indicate the output work that the ethernet port is arranged according to the first output power thresholding table for the PSE chip Rate thresholding；

The PSE chip is used to receive the described instruction that the processor is sent, and executes described instruction, according to it is described with The setting ethernet port is arranged in the power grade and the first output power thresholding table for netting very much the Power over Ethernet of port Output power thresholding.

14. the PSE as described in claim 11 or 12, which is characterized in that the PSE further includes memory, the memory with The processor connects, and is stored with the first output power thresholding table and the second output power thresholding table in the memory, described First output power thresholding table corresponds to the second resistance value, and the second output power thresholding table corresponds to first electricity Resistance value,

The PSE chip is used to the power grade of the Power over Ethernet of the ethernet port being sent to the processor；

The processor is used for: judging whether the currently running physical layer modes belong to the preassigned pattern set, true The currently running physical layer modes of the fixed ethernet port belong to after the preassigned pattern set, defeated according to described first Power threshold table determines the corresponding output power thresholding of the power grade out, and the output power thresholding determined is configured to institute It states in PSE chip；

15. the PSE as described in claim 11 or 12, which is characterized in that the processor is also used to:

The Link Layer Discovery Protocol LLDP frame after the extension that the PD is transmitted is generated, and after receiving the extension of PD transmission LLDP frame, and the response of the LLDP frame after the extension transmitted to PD transmission to the PD；

The field in LLDP frame after the extension that the processor is also used to transmit by the PD determines described in the PD setting The power not consumed by the high standard ethernet netting twine is not utilized when the maximum consumption power of the ethernet port of PD, and is notified The PSE chip；

The field in LLDP frame after the extension of the PD transmission includes one or more of following two field: powering mode Enabled field and ownership field；Whether the powering mode enables field enabled using not by the height for characterizing the PD The power of standard ethernet cable consumption；The ownership field is for characterizing whether the PD requires using not by the high standard The ownership of the power of quasi- ethernet netting twine consumption.

16. a kind of powered device PD characterized by comprising

Chipset, ethernet port, transformer and PHY chip, the chipset include processor and PD chip, described Processor is connected to the PD chip and the PHY chip, and the PD chip is connected to the transformer, the network interface connector It is connected to the transformer, the transformer is connected to the PHY chip；Wherein,

The chipset is used to obtain the currently running physical layer modes of the ethernet port in the PHY chip, and For judging whether the physical layer modes belong to preassigned pattern set, the preassigned pattern set includes requiring to use high standard The physical layer modes of ethernet netting twine, when determining that the physical layer modes belong to the preassigned pattern set, according to it is described with It nets very much the power grade of the Power over Ethernet of port and considers the corresponding reserved line loss power of second resistance value, described in setting The maximum consumption power of ethernet port, wherein route of the second resistance value between the PD and power supply unit PSE Maximum resistance value, the second resistance value are less than first resistor value, and the first resistor value is if the ethernet port is transported Capable physical layer modes are not belonging to the preassigned pattern set, the maximum resistance value of the route.

17. PD as claimed in claim 16, which is characterized in that the PD chip is also used to:

18. the PD as described in claim 16 or 17, which is characterized in that the PD chip is stored with the first maximum consumption power meter With the second maximum consumption power meter, the first maximum consumption power meter corresponds to the second resistance value, and described second is maximum It consumes power meter and corresponds to the first resistor value,

It include multiple power grades and multiple maximum consumption power in the first maximum consumption power meter, first maximum disappears The multiple power grade in consumption power meter is mapped as dijection to the multiple maximum consumption power,

It include multiple power grades and multiple maximum consumption power in the second maximum consumption power meter, second maximum disappears The multiple power grade in consumption power meter is mapped as dijection to the multiple maximum consumption power,

It is described more in the multiple power grade and the second maximum consumption power meter in the first maximum consumption power meter A power grade difference is identical, and the power grade that the second power grade set is belonged in the first maximum consumption power meter is corresponding Maximum consumption power, be greater than the second maximum consumption power meter in the corresponding maximum consumption power of corresponding power grade,

Belong to the corresponding maximum consumption power of power grade of the first power grade set in the first maximum consumption power meter Equal to the corresponding maximum consumption power of corresponding power grade in the second output power thresholding table, the second power grade collection It closes and integrates with the first power grade intersection of sets as empty set,

The processor is also used to for judging whether the currently running physical layer modes belong to the preassigned pattern set When determining that the currently running physical layer modes belong to the preassigned pattern set, Xiang Suoshu PD chip sends instruction, institute Instruction is stated to be used to indicate the PD chip and disappeared according to the maximum that the ethernet port is arranged in the first maximum consumption power meter Wasted work rate；

The PD chip is used to receive the described instruction that the processor is sent, and executes described instruction, according to it is described with The setting ethernet port is arranged in the power grade and the first maximum consumption power meter for netting very much the Power over Ethernet of port Maximum consumption power.

19. the PD as described in claim 16 or 17, which is characterized in that the PD further includes memory, the memory and institute Processor connection is stated, is stored with the first maximum consumption power meter and the second maximum consumption power meter in the memory, described the One maximum consumption power meter corresponds to the second resistance value, and the second maximum consumption power meter corresponds to the first resistor Value,

The processor is used for: judging whether the currently running physical layer modes belong to the preassigned pattern set, true The currently running physical layer modes of the fixed ethernet port belong to after the preassigned pattern set, most according to described first Big consumption power meter determines the corresponding maximum consumption power of the power grade, by the maximum consumption power configuration determined to institute It states in PD chip；

20. the PD as described in claim 16 or 17, which is characterized in that the processor is also used to:

The Link Layer Discovery Protocol LLDP frame after the extension that the PSE is transmitted is generated, and after receiving the extension of PSE transmission LLDP frame, and send to the PSE response of the LLDP frame after the extension transmitted to the PSE；

The field in LLDP frame after the extension that the processor is also used to transmit by the PSE determines PSE setting institute The power not consumed by the high standard ethernet netting twine is not utilized when stating the output power thresholding of the ethernet port of PSE, and Notify the PD chip；

The field in LLDP frame after the extension of the PSE transmission includes one or more of following two field: power supply mould Formula enables field and ownership field；Whether the powering mode enables field enabled using not by institute for characterizing the PSE State the power of high standard ethernet netting twine consumption；The ownership field is for characterizing whether the PSE requires using not by institute State the ownership of the power of high standard ethernet netting twine consumption.

21. a kind of powered device PD characterized by comprising

PD chip, ethernet port, transformer and PHY chip, the PD chip are connected to the transformer and described PHY chip, the ethernet port are connected to the transformer, and the transformer is connected to the PHY chip；Wherein,

The PHY chip is stored with preassigned pattern set, and the preassigned pattern set includes requiring to use high standard Ethernet net The physical layer modes of line, the PHY chip is for judging whether the currently running physical layer modes of the ethernet port belong to In the preassigned pattern set, it is also used to belong to the PD chip transmission currently running physical layer modes described predetermined The notice of set of modes；

The PD chip is used for when receiving the notice that the PHY chip is sent, according to the ethernet port with It nets very much the power grade of power supply and considers the corresponding reserved line loss power of second resistance value, the ethernet port is set Maximum consumption power, wherein the maximum resistance value of route of the second resistance value between the PD and power supply unit PSE, The second resistance value is less than first resistor value, and the first resistor value is the physical layer mould if ethernet port operation Formula is not belonging to the preassigned pattern set, the maximum resistance value of the route.

22. PD as claimed in claim 21, which is characterized in that the PD chip is also used to:

23. the PD as described in claim 21 or 22, which is characterized in that the PD chip is stored with the first maximum consumption power meter With the second maximum consumption power meter, the first maximum consumption power meter corresponds to the second resistance value, and described second is maximum It consumes power meter and corresponds to the first resistor value,

The PD chip is used for when receiving the notice that the PHY chip is sent, according to the ethernet port Power over Ethernet power grade and the first maximum consumption power meter, the maximum consumption power of the ethernet port is set.

24. a kind of power supply unit PSE characterized by comprising

Physical layer modes determination unit, for determining that the currently running physical layer modes of ethernet port of the PSE belong to Preassigned pattern set, the preassigned pattern set include the physical layer modes for requiring to use high standard ethernet netting twine；

Setting unit, for according to the power grade of the Power over Ethernet of the ethernet port and considering that second resistance value is corresponding Reserved line loss power, the output power thresholding of the ethernet port is set, wherein the second resistance value is described The maximum resistance value of route between PSE and powered device PD, the second resistance value are less than first resistor value, first electricity Resistance value is if the physical layer modes of ethernet port operation are not belonging to the preassigned pattern set, the maximum of the route Resistance value.

25. PSE as claimed in claim 24, which is characterized in that the PSE further include:

Enabled determination unit utilizes the power not consumed by the high standard ethernet netting twine for determining that the PD is not enabled on.

26. PSE as claimed in claim 24, which is characterized in that the setting unit is used for:

27. PSE as claimed in claim 26, which is characterized in that the setting unit is also used to:

28. the PSE as described in any in claim 24 to 27, which is characterized in that the PSE further include:

Negotiation element, the field in Link Layer Discovery Protocol LLDP frame after the extension that the PSE is transmitted by the PD, determines The PD is not utilized when the maximum consumption power of the ethernet port of the PD is arranged not to be disappeared by the high standard ethernet netting twine The power of consumption, wherein the field in LLDP frame after the extension includes one or more of following two field: power supply mould Formula enables field and ownership field；

29. a kind of powered device PD characterized by comprising

Physical layer modes determination unit, for determining that it is pre- that the currently running physical layer modes of ethernet port of the PD belong to Mould-fixed set, the preassigned pattern set include the physical layer modes for requiring to use high standard ethernet netting twine；

Setting unit, for according to the power grade of the Power over Ethernet of the ethernet port and considering that second resistance value is corresponding Reserved line loss power, the maximum consumption power of the ethernet port is set, wherein the second resistance value is described The maximum resistance value of route between PD and power supply unit PSE, the second resistance value are less than first resistor value, first electricity Resistance value is if the physical layer modes of ethernet port operation are not belonging to the preassigned pattern set, the maximum of the route Resistance value.

30. PD as claimed in claim 29, which is characterized in that the PD further include:

Enabled determination unit utilizes the power not consumed by the high standard ethernet netting twine for determining that the PSE is not enabled on.

31. PD as claimed in claim 29, which is characterized in that the setting unit is used for:

32. PD as claimed in claim 31, which is characterized in that the setting unit is also used to:

33. the PD as described in claim 29 to 32 is any, which is characterized in that the PD further include:

Negotiation element, the field in Link Layer Discovery Protocol LLDP frame after the extension for being transmitted by the PSE, determines institute It does not utilize when stating the output power thresholding for the ethernet port that the PSE is arranged in PSE and is not disappeared by the high standard ethernet netting twine The power of consumption, wherein the field in LLDP frame after the extension includes one or more of following two field: power supply mould Formula enables field and ownership field；