CN101291232A - Ethernet port, Ethernet switch and signal receiving and sending method of Ethernet equipment - Google Patents
Ethernet port, Ethernet switch and signal receiving and sending method of Ethernet equipment Download PDFInfo
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- CN101291232A CN101291232A CNA200810114506XA CN200810114506A CN101291232A CN 101291232 A CN101291232 A CN 101291232A CN A200810114506X A CNA200810114506X A CN A200810114506XA CN 200810114506 A CN200810114506 A CN 200810114506A CN 101291232 A CN101291232 A CN 101291232A
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Abstract
The invention provides an Ethernet interface, an Ethernet switch and a method for sending and receiving a signal of Ethernet equipment, wherein, the Ethernet interface comprises a management module formed by an extended-range supporting unit for controlling a chip of a physical layer, increasing the intensity of a sent signal and reducing the judgment threshold of the received signal in order to support the extended-range UTP connection; and the Ethernet switch comprises one or a plurality of Ethernet interfaces and a management module for controlling at least one chip of the physical layer on the Ethernet interface of the Ethernet switch, increasing the intensity of the sent signal and reducing the judgment threshold of the received signal.
Description
Technical field
The present invention relates to the Ethernet interconnection technique, particularly relate to the signal transmit-receive method of a kind of ethernet port, Ethernet switch and ethernet device.
Background technology
Ethernet is by U.S. electric and (the Institute of Electrical andElectronics Engineers of Electronic Engineering Association, IEEE) standardized a kind of local area network (LAN) interconnection technique, the major technique standard of Ethernet defines in the normative document IEEE 802.3 of IEEE issue.The Ethernet of mainstream applications connects media optical fiber and unshielded twisted pair (Unshielded Twisted Paired, UTP) two kinds.Wherein, realize that the cost of optical fiber connection is very high, so the optical fiber connection mainly is the connection that is used for the garden backbone network because optical fiber and laser transceiver cost an arm and a leg; And UTP is cheap, and is easy for installation, connects (the desktop connection is meant that data terminal equipments such as PC or data server are linked into the connection of the network switch) field at the desktop to cost sensitivity and is widely used.Mainly contain 10BSAE-T, 100BASE-TX and three kinds of mainstream technologys of 1000BASE-T at present with the vehicular ethernet technology of UTP, transmission rate is respectively 10Mbps, 100Mbps and 1000Mbps.Wherein 10BSAE-T and 100BASE-TX only use 2 couple in all 4 pairs of transmission lines of 5 class UTP to carry out the signal transmission, and 1000BASE-T need use all 4 pairs of transmission lines to carry out the signal transmission.
According to IEEE 802.3 standard criterions, the ethernet port basic structure of an access UTP as shown in Figure 1.Wherein exchange chip is finished the processing capacity of network data, and physical chip (PHY) is connected with UTP by transformer, finishes transmission and reception that UTP goes up signal.The process that signal transmits on UTP as shown in Figure 2, UTP has attenuation to signal strength signal intensity, cable is long more, it is big more to decay.At receiving terminal, the signal that PHY receives must could correctly receive processing greater than certain intensity (being called decision threshold).Be subjected to the restriction of UTP attenuation characteristic, the Ethernet of standard connects signal transmission range maximum on UTP can only reach 100 meters, cause receiving mistake below surpassing the reception decision threshold that 100 meters signal strength signal intensities might be attenuated to PHY, thus can not guarantee to connect correct and stable.
Along with present commercial building is more and more higher, area is increasing, the demand that the network desktop connects distance has surpassed 100 meters in some place, and the UTP ethernet technology of standard seems awkward on addressing these problems, and has to therefore use expensive optical fiber to connect on desktop connects.Worse, a lot of data terminal equipments do not provide the fiber optic Ethernet interface and have only the Ethernet interface that connects UTP, must be by the UTP access network; These equipment (it is on-the-spot generally to be installed in office) distance center switch (generally being deployed in machine room) will bring great trouble and restriction to use if surpass 100 meters distances.
The Ethernet connectivity problem that surpasses 100 meters (as 100～180 meters) for the UTP link slightly, present industry solution, it as application number 200480036504.3 Chinese patent application, mainly be by changing the coding and the signaling format of data at 10BSAE-T, 100BASE-TX network, use is different from the coded format of IEEE802.3 standard, the signal mode that originally used 2 pairs of transmission lines to transmit is changed into use all 4 pairs of transmission lines to finish the signal transmission.The defective of this technology is owing to adopted the command transmitting that is different from standard ethernet, can not be connected with the ethernet port of standard.And for the 1000BASE-T Ethernet, owing to itself just used 4 pairs of transmission lines of all UTP, industry does not have the connectivity problem that feasible scheme solves 100～180 meters at present.
Summary of the invention
Because the problems referred to above, one of purpose of the present invention is to provide a kind of ethernet port, to solve the Ethernet connectivity problem that the UTP link surpasses 100 meters slightly, effectively increase the transmission range of ethernet port on 5 class unshielded twisted pairs (UTP), the coverage of extending UTP media Ethernet.
The present invention also provides a kind of signal transmit-receive method of ethernet device, to increase the transmission range of ethernet port on UTP.
Correspondingly, the present invention also provides a kind of Ethernet switch, realizes that the UTP link surpasses 100 meters Ethernet connection slightly.
To achieve these goals, the embodiment of the invention provides a kind of Ethernet interface, this Ethernet interface comprises: exchange chip, physical chip and transformer, described physical chip is connected with unshielded twisted pair UTP by transformer, this ethernet port also comprises administration module, described administration module comprises: prolong the journey supporter, be used to control described physical chip and strengthen intensity that sends signal and the decision threshold that reduces received signal, to support that prolonging journey UTP connects.
The embodiment of the invention also provides a kind of signal transmit-receive method of Ethernet, ethernet device comprises one or more ethernet ports, this method comprises: the physical chip that strengthens at least one ethernet port sends the intensity of signal and reduces the decision threshold of this physical chip received signal, to support that prolonging journey UTP connects.
The embodiment of the invention also provides a kind of Ethernet switch, and this Ethernet switch comprises one or more ethernet ports; And administration module, described administration module comprises: prolong the journey supporter, the physical chip that is used to control at least one ethernet port of Ethernet switch strengthens intensity that sends signal and the decision threshold that reduces received signal, to support that prolonging journey UTP connects.
The present invention expands by the Ethernet interconnection technique to standard, effectively extended the coverage of UTP media Ethernet, make three kinds of main flow ethernet technologys of 10BSAE-T, 100BASE-TX and 1000BASE-T can on UTP, realize connection distance, even reach 180 meters connection distance greater than 100 meters.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute limitation of the invention.In the accompanying drawings:
Fig. 1 is the basic structure schematic diagram of existing Ethernet interface;
The process schematic diagram that Fig. 2 transmits on UTP for signal;
Fig. 3 for ethernet port of the present invention and existing Ethernet port by prolonging the schematic diagram that journey UTP is connected;
Fig. 4 is the basic structure schematic diagram of the ethernet port of the embodiment of the invention;
The schematic diagram that Fig. 5 manages a plurality of PHY for administration module in the embodiment of the invention;
Fig. 6 is the structural representation of administration module in the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, specific embodiments of the invention are elaborated below in conjunction with accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
Embodiment 1
Present embodiment provides a kind of ethernet port.Ethernet port in the present embodiment is to improve the distance that is connected that prolongs Ethernet UTP by the signal that transmits on UTP among Fig. 2 is sent aspect two with receiving, and the UTP that has prolonged the connection distance can become and prolong journey UTP.As shown in Figure 3, this be an improved ethernet port (having physical chip PHY1) with existing standard ethernet port (having physical chip PHY2) by prolonging the example that journey UTP is connected.The improvements of the improved ethernet port of present embodiment are physical chip PHY1, strengthen PHY1 (as switch ports themselves) sends signal on UTP intensity on the one hand, thereby the signal that PHY1 is sent just can transmit farther distance on UTP, through arriving PHY2 (as the pc port) receiving terminal that connects the other side after the UTP decay of prolonging journey, can be under the decision threshold of standard correct reception; Decision threshold when suitably reducing the PHY1 received signal on the other hand simultaneously, the signal of the normal intensity of PHY2 transmission is through prolonging the UTP decay of journey like this, reach the substandard decision threshold of signal strength signal intensity of PHY1 receiving terminal, by the decision threshold that suitable reduction receives, PHY1 can correctly receive processing, and this is prolonged the signal of the UTP excessive attenuation of journey.So just can be implemented in to surpass and carry out the Ethernet connection on 100 meters the UTP.
Facts have proved, signal strength signal intensity raising 10% is reduced by 10% with corresponding decision threshold can make the distance that is connected to reach 180 meters.But the present invention is not limited to signal strength signal intensity raising 10% and corresponding decision threshold are reduced by 10%, the ratio that the ratio of signalization intensity raising according to actual needs and decision threshold reduce, for example, if the distance that known UTP connects greater than 100 meters less than 180 meters, the suitable numerical value of ratio any one between 0～10% that can come ratio that control signal intensity improves and decision threshold to reduce according to the distance that actual UTP connects is as 2%, 5%, 8% etc.On realizing, for the physical chip of same ethernet port, the ratio of ratio that strength of transmitted signals improves and the reduction of received signal decision threshold can be different.But it is same ratio that the ratio of strength of transmitted signals raising and the ratio of received signal decision threshold reduction preferably are set in the embodiment of the invention.
By present embodiment, can effectively increase 10BSAE-T, 100BASE-TX and the 1000BASE-T ethernet port transmission range on 5 class unshielded twisted pairs, make transmission range greater than 100 meters, even reach 180 meters.
If the signal of rigid physical chip PHY1 to Ethernet interface sends intensity and decision threshold changes, then may there are the following problems: when using 100 meters to connect with interior UTP, because UTP does not exceed outside the standard to the decay of signal, therefore arrive receiving terminal get signal strength signal intensity can be bigger than normal, might cause the transmission and the reception of signal mistake to occur, can not realize correct with stable being connected.Therefore the also further use and management module of present embodiment manages the physical chip PHY1 of one or more improved ethernet ports of ethernet device (as Ethernet switch), as Fig. 4 and shown in Figure 5.In Fig. 5, administration module is by the SMI of PHY chip in the ethernet device (serial management interface, serial management interface) each PHY chip to be managed control, but the present invention is not limited thereto.This administration module can be used as the part of ethernet port, also can be used as the part of ethernet device (as Ethernet switch), manages with the physical chip to one or more ethernet ports.
Two PHY1 operating states can be set in the described administration module: (1) need prolong the state that journey UTP connects, and (2) do not need to prolong the state that journey UTP connects.The administrative staff of ethernet device can carry out following management to PHY by administration module: when needs realize prolonging journey UTP connection on certain ethernet port, the physical chip PHY that this port is set is operated in and prolongs the state that journey UTP signal sends and receives, and promptly enhancing signal sends intensity and reduces the state that receives decision threshold; Be in the signal that meets the existing standard standard and send and accepting state for not needing to prolong physical chip PHY that port that journey UTP connects then is provided with this port, the signal that does not promptly need to change physical chip sends the state of intensity and decision threshold, thereby can avoid the mistake that may occur.
As can be known above-mentioned, present embodiment can prolong the port number of journey UTP connection to save the consumption of device power supply (DPS) by the control switch device support of administration module intelligence.
Embodiment 2
Further, present embodiment further will prolong journey UTP connection at administration module and prolong journey connection grade apart from being divided into a plurality of UTP on the basis of embodiment 1,2 UTP for example can be set connect distance level scale: (1) 100～120 meter, and (2) 120～150 meters; 3 UTP perhaps are set connect (1) 100～120 meter of distance level scale, (2) 120～150 meters, and (3) 150～180 meters.The ratio that ratio that the distance level scale that connects different UTP can corresponding different signal strength signal intensities improves and decision threshold reduce, administration module can prolong journey according to UTP and prolong journey apart from the UTP of correspondence and connect the ratio that ratio that the physical chip strength of transmitted signals of described at least one ethernet port of grade control strengthens and received signal decision threshold reduce, prolong the port that journey UTP connects with refined control switch device support more, with the consumption of further saving device power supply (DPS).
Fig. 6 is the structural representation of administration module in the embodiment of the invention, and described administration module comprises: prolong the journey supporter, prolong journey grade classification unit, state conversion unit, and consumption detection unit.
Wherein, describedly prolong the physical chip that the journey supporter is used to control at least one ethernet port of Ethernet switch and strengthen intensity that sends signal and the decision threshold that reduces received signal.
The described journey grade classification unit that prolongs is used for prolonging journey connection grade with prolonging journey UTP connection apart from being divided into different UTP, and prolongs journey connection grade according to this UTP and call the described journey supporter that prolongs; The described journey supporter that prolongs is according to the ratio of the physical chip strength of transmitted signals enhancing of described at least one ethernet port of the definite control of the call instruction that prolongs journey grade classification unit and the ratio that the received signal decision threshold reduces.
Whether described state conversion unit is used for selecting to call to prolong the journey supporter according to control command.
Described consumption detection unit is used to detect the power supply power consumption of Ethernet switch, and calls according to power consumption situation and to prolong the journey supporter; The described journey supporter that prolongs is determined the number of Control work at the physical chip of the state that strengthens intensity that sends signal and the decision threshold that reduces received signal according to the call instruction of consumption detection unit.
Embodiment 3
Present embodiment provides the signal transmit-receive method of a kind of ethernet device (as Ethernet switch), and this method comprises:
Decision threshold when strengthening the signal transmission intensity of ethernet port physical chip and reducing this physical chip received signal carries out the Ethernet connection to be implemented in to surpass on 100 meters UTP.
Further, the signal transmit-receive method of present embodiment also comprises: the operating state of the one or more ethernet port physical chips of control of intelligence, to same ethernet port, realize promptly can supporting to surpass 100 meters UTP Ethernet connection, 100 meters that also can support standard with interior UTP Ethernet connection.Like this, only can control and prolong the port enhancing signal transmission intensity that journey UTP connects, reach the purpose of saving power supply power consumption at needs; Also can support to prolong the port number that journey UTP connects, avoid causing fault because of the power deficiency according to the permission situation restriction of device power supply (DPS) power consumption.
Further, the signal transmit-receive method of present embodiment also comprises: the corresponding a plurality of UTP of operating state that the physical chip of ethernet port is set prolong journey and connect grade, different UTP prolongs journey and connects the ratio that ratio that distance level scale can corresponding different signal strength signal intensities improves and decision threshold reduce, the administrative staff of ethernet device can prolong the distance that journey connects according to UTP and select the suitable journey of prolonging to connect grade, prolong the port that journey UTP connects with refined control switch device support more.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method can instruct relevant hardware to finish by program, this program can be stored in the computer read/write memory medium, such as ROM/RAM, magnetic disc, CD etc.When said procedure by machine, when loading and carrying out as computer, this machine becomes in order to participate in device of the present invention.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. ethernet port, comprise exchange chip, physical chip and transformer, described physical chip is connected with unshielded twisted pair UTP by transformer, it is characterized in that, this ethernet port also comprises administration module, described administration module comprises: prolong the journey supporter, be used to control described physical chip and strengthen intensity that sends signal and the decision threshold that reduces received signal.
2. ethernet port according to claim 1 is characterized in that: described administration module also comprises: whether state conversion unit is used for selecting to call to prolong the journey supporter according to control command.
3. Ethernet interface according to claim 1, it is characterized in that: described administration module also comprises and prolongs journey grade classification unit, be used for to prolong journey UTP connection and prolong journey connection grade, and prolong journey connection grade according to this UTP and call the described journey supporter that prolongs apart from being divided into different UTP; The described journey supporter that prolongs also is used for determining the ratio of control physical chip strength of transmitted signals enhancing and the ratio that the received signal decision threshold reduces according to the call instruction that prolongs journey grade classification unit.
4. Ethernet interface according to claim 1 is characterized in that:
The strengthened ratio of transmission that sends signal is in 10%; And
The ratio that the decision threshold of received signal reduces is in 10%.
5. Ethernet switch, comprise one or more ethernet ports, it is characterized in that, this Ethernet switch also comprises administration module, described administration module comprises: prolong the journey supporter, the physical chip that is used to control at least one ethernet port of Ethernet switch strengthens intensity that sends signal and the decision threshold that reduces received signal.
6. Ethernet switch according to claim 5 is characterized in that:
Described administration module also comprises and prolongs journey grade classification unit, is used for connecting distance and being divided into different UTP and prolonging journey and connect grade prolonging journey UTP, and prolongs journey according to this UTP and connect grade and call the described journey supporter that prolongs; The described journey supporter that prolongs also is used for determining the ratio that ratio that the physical chip strength of transmitted signals of described at least one ethernet port of control strengthens and received signal decision threshold reduce according to the call instruction that prolongs journey grade classification unit.
7. Ethernet switch according to claim 5 is characterized in that:
Whether described administration module also comprises state conversion unit, be used for selecting to call to prolong the journey supporter according to control command.
8. Ethernet switch according to claim 7 is characterized in that:
Described administration module also comprises:
The consumption detection unit is used to detect the power supply power consumption of Ethernet switch, and calls according to power consumption situation and to prolong the journey supporter;
The described journey supporter that prolongs also is used for determining the number of Control work at the physical chip of the state that strengthens intensity that sends signal and the decision threshold that reduces received signal according to the call instruction of consumption detection unit.
9. Ethernet switch according to claim 5 is characterized in that:
The strengthened ratio of transmission that sends signal is in 10%; And
The ratio that the decision threshold of received signal reduces is in 10%.
10. the signal transmit-receive method of an ethernet device, this ethernet device comprises one or more ethernet ports, it is characterized in that, this method comprises:
The physical chip that strengthens at least one ethernet port sends the intensity of signal and reduces the decision threshold of this physical chip received signal.
11. method according to claim 10 is characterized in that:
Need not prolong the physical chip of controlling this at least one ethernet port when journey UTP connects at least one ethernet port and be operated in the state that the signal that does not change physical chip sends intensity and decision threshold.
12. method according to claim 10 is characterized in that:
The strengthened ratio of transmission that sends signal is in 10%; And
The ratio that the decision threshold of received signal reduces is in 10%.
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| CN200810114506XA CN101291232B (en) | 2008-06-03 | 2008-06-03 | Ethernet switch and signal receiving and sending method of Ethernet equipment |
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| CN200810114506XA CN101291232B (en) | 2008-06-03 | 2008-06-03 | Ethernet switch and signal receiving and sending method of Ethernet equipment |
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| CN101291232B CN101291232B (en) | 2010-09-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800651A (en) * | 2009-12-29 | 2010-08-11 | 福建星网锐捷网络有限公司 | Circuit and switchboard for 1000Base-T gigabit Ethernet port interconnected communication |
| CN107835098A (en) * | 2017-11-28 | 2018-03-23 | 车智互联（北京）科技有限公司 | A kind of network fault detecting method and system |
| CN107995030A (en) * | 2017-11-28 | 2018-05-04 | 车智互联（北京）科技有限公司 | A kind of network detection method, network fault detecting method and system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174581C (en) * | 2000-07-18 | 2004-11-03 | 华为技术有限公司 | Long-distance transmission method for signals of Ethernet |
| CN1271821C (en) * | 2002-12-03 | 2006-08-23 | 宏三科技股份有限公司 | Ethernet receiving device and method of low cost extensible transmission range |
| CN1890913A (en) * | 2003-12-08 | 2007-01-03 | 硅谷数模半导体有限公司 | Signaling and coding methods and apparatus for long-range 10 and 100 Mbps Ethernet transmission |
| CN2932839Y (en) * | 2006-02-28 | 2007-08-08 | 北京索安视讯科技有限公司 | Ethernet long-distance transceiver based on twisted-pair transmission |
| US8228795B2 (en) * | 2006-04-19 | 2012-07-24 | Broadcom Corporation | Method and system for extended reach copper transceiver |
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2008
- 2008-06-03 CN CN200810114506XA patent/CN101291232B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800651A (en) * | 2009-12-29 | 2010-08-11 | 福建星网锐捷网络有限公司 | Circuit and switchboard for 1000Base-T gigabit Ethernet port interconnected communication |
| CN101800651B (en) * | 2009-12-29 | 2012-11-21 | 福建星网锐捷网络有限公司 | Circuit and switchboard for 1000Base-T gigabit Ethernet port interconnected communication |
| CN107835098A (en) * | 2017-11-28 | 2018-03-23 | 车智互联（北京）科技有限公司 | A kind of network fault detecting method and system |
| CN107995030A (en) * | 2017-11-28 | 2018-05-04 | 车智互联（北京）科技有限公司 | A kind of network detection method, network fault detecting method and system |
| CN107835098B (en) * | 2017-11-28 | 2021-01-29 | 车智互联（北京）科技有限公司 | Network fault detection method and system |
| CN107995030B (en) * | 2017-11-28 | 2021-09-14 | 车智互联（北京）科技有限公司 | Network detection method, network fault detection method and system |
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