CN104954208A - Method and system for extending data transmission distance of Ethernet switch - Google Patents
Method and system for extending data transmission distance of Ethernet switch Download PDFInfo
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- CN104954208A CN104954208A CN201510225836.6A CN201510225836A CN104954208A CN 104954208 A CN104954208 A CN 104954208A CN 201510225836 A CN201510225836 A CN 201510225836A CN 104954208 A CN104954208 A CN 104954208A
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Abstract
The invention provides a method for extending data transmission distance of an Ethernet switch. The method includes the steps that S1, a PHY (physical layer) unit sends a negotiation pulse signal with an auto-negotiation announcement fixed as duplexing modes at a 10M-half-duplex speed and a 10M-full-deplex speed, to a long-distance transmission port; S2, the PHY unit negotiates both links to be in a 10M-stable-speed transmission mode; S3, an MAC (media access control) unit starts a flow control mode for the long-distance transmission port and stops a flow control mode for an upper connection port. The invention further provides a system for extending the data transmission distance of the Ethernet switch. The method and the system for extending the data transmission distance of the Ethernet switch have the advantages that insusceptibility to unstable connection caused by poor-quality network cables or a need for a long network cable for long-distance transmission in practical environments can be guaranteed for users, widespread onsite data transmission abnormity problems can be solved for the users rapidly, and great social and economic value is obtained.
Description
Technical field
The present invention relates to network data transmission, particularly relate to a kind of method and system extending Ethernet switch data transmission distance in network data transmission.
Background technology
In recent years, along with the rapid raising of the network bandwidth, computer process ability and memory capacity, and the appearance of various video information process technology, the video monitoring system advantage of full-scale digital, networking is more obvious.Each camera terminal is different to the distance of Surveillance center, and in most cases distance is more than 100 meters; Some control points flock together, and some control points compare dispersion.Monitoring IPization, increasing watch-dog is connected into existing ethernet network.In community or in shopping centre, for higher building, connect between house and building.When network connects distance more than 100 meters, the switch device only with a kind of mode of operation cannot meet the data transfer demands after more than 100 meters.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of method and system extending Ethernet switch data transmission distance.
The invention provides a kind of method extending Ethernet switch data transmission distance, comprise the following steps:
S1, PHY unit send auto-negotiation to long range propagation port and notice the negotiation pulse signal being fixed as 10M half-duplex, these two kinds of speed dual-modes of 10M full duplex;
S2, PHY unit by both sides' link negotiation under the steady rate transmission mode of 10M;
S3, MAC unit opens the flow control mode of long range propagation port, closes the flow control mode of first line of a couplet port.
As a further improvement on the present invention, before step S1, also comprise step S0, judge whether to need the transfer of data of long distance, if needed, then by hand equipment being arranged current operation mode is prolongation pattern, and enter step S1, if do not needed, then by hand equipment being arranged current operation mode is general mode, and terminates.
Present invention also offers a kind of system extending Ethernet switch data transmission distance, comprise MAC & PHY unit, memory cell, main power source unit, clock unit, reset unit, mode switch, network interface unit, network transformer, wherein, described memory cell, main power source unit, clock unit, reset unit is connected with described MAC & PHY unit respectively, described mode switch respectively with described reset unit, MAC & PHY unit connects, described network interface unit is connected with described MAC & PHY unit through described network transformer.
Described network transformer has two at least, and network transformer described in one of them is connected with POE power supply unit.
Described MAC & PHY unit is connected with LED unit, and described POE power supply unit is connected with described LED unit.
Described POE power supply unit is connected with power subsystem.
The invention has the beneficial effects as follows: by such scheme, be not subject to when can ensure in user's actual environment and there is netting twine inferior or need fourdrinier wire long-distance transmissions connecting unstable impact; The on-the-spot ubiquitous data transmission exception problem of quick solution user, has great social economic value.
Accompanying drawing explanation
Fig. 1 is a kind of flow chart extending the method for Ethernet switch data transmission distance of the present invention;
Fig. 2 is a kind of theory diagram extending the system of Ethernet switch data transmission distance of the present invention.
Embodiment
Illustrate below in conjunction with accompanying drawing and embodiment the present invention is further described.
The object of the invention is to overcome existing equipment and only have the shortcoming of 100 meters with not enough in traditional ethernet exchange data transmission range, a kind of transmission method of the long-range data under the widely used low-cost equipment of reality is provided, meets the actual deployment needs of user.In order to achieve this end, the technical solution used in the present invention is as follows:
According to the invention provides a kind of long distance mode, on the basis of complete compatible IEEE802.3 standard auto-negotiation agreement, make the transmission range of Ethernet break through 100 meters, transmission medium is applicable to 6 class lines, 5 class lines, 3 class lines etc.
As shown in Figure 1, a kind of method extending Ethernet switch data transmission distance, comprises the following steps:
S1, PHY unit send auto-negotiation to long range propagation port and notice the negotiation pulse signal being fixed as 10M half-duplex, these two kinds of speed dual-modes of 10M full duplex;
S2, PHY unit by both sides' link negotiation under the steady rate transmission mode of 10M;
S3, MAC unit opens the flow control mode of long range propagation port, closes the flow control mode of first line of a couplet port.
As shown in Figure 1, before step S1, also comprise step S0, judge whether to need the transfer of data of long distance, if needed, then by hand equipment being arranged current operation mode is prolongation pattern, and enter step S1, if do not needed, then by hand equipment being arranged current operation mode is general mode, and terminates.
A kind of method extending Ethernet switch data transmission distance provided by the invention, only have the restriction of 100 meters to solve traditional ethernet switch network data transmission distance, when needing the wiring networking more than 100 meters, then optical fiber/Repeater/ must be adopted to be with the equipment such as the switch of light mouth to extend.It compensate for the deficiency of conventional network equipment in actual application environment, proposes a kind of simple low cost and the reliable and stable method being suitable for actual monitored application.
The double mode switching of pattern and general mode is extended by switch; user can select corresponding mode of operation according to the deployment scenario of own net; the data transmission distance of equipment and speed are regulated; without the need to changing existing network topology, giving full play to the performance of equipment and protecting the investment of user to greatest extent.
System architecture of the present invention is composed as follows:
This equipment is made up of PHY unit, MAC unit, control unit, memory cell, power subsystem.
The function situation that each module and unit complete is described below:
1, PHY unit defines data transmission and the function such as Link State, clock reference, code and decode required for reception;
2, MAC unit provides the encapsulation of Frame, error control, the function such as transmission control and addressing;
3, control unit switches mainly for the pattern of user and to manage chip and configure;
4, memory cell mainly completes file and data storage;
5, power subsystem is for providing the electric power support of self or opposite end power receiving equipment.
As shown in Figure 2, present invention also offers a kind of system extending Ethernet switch data transmission distance, comprising MAC & PHY unit 1(MAC is Media Access Contro, and media get involved key-course, PHY is physical layer), memory cell 2, main power source unit 3, clock unit 4, reset unit 5, mode switch 6, network interface unit 8, network transformer 7, wherein, described memory cell 2, main power source unit 3, clock unit 4, reset unit 5 is connected with described MAC & PHY unit 1 respectively, described mode switch 6 respectively with described reset unit 5, MAC & PHY unit 1 connects, described network interface unit 8 is connected with described MAC & PHY unit 1 through described network transformer 7, by main power source unit 3 for system and PD hold power receiving equipment to provide electric power support, system clock 25MHz is provided by clock unit 4, the communication with MAC & PHY unit 1 is realized by memory cell 2.
As shown in Figure 2, described network transformer 7 has two at least, and network transformation 7 device described in one of them is connected with POE power supply unit 10 (POE is active Ethernet, Power Over Ethernet).
As shown in Figure 2, described MAC & PHY unit 1 is connected with LED unit 11, and described POE power supply unit 10 is connected with described LED unit 11.
As shown in Figure 2, described POE power supply unit 10 is connected with power subsystem 9.
As shown in Figure 2, a kind of operation principle extending the system of Ethernet switch data transmission distance provided by the invention is as follows:
Under acquiescence general mode, memory cell 2 is not powered, and MAC & PHY unit 1 can't detect prolongation pattern;
Stir mode switch 6, memory cell 2 powers on, meanwhile, system reset, prolongation pattern comes into force;
Again stir mode switch 6, memory cell 2 power-off, system resets again, gets back to general mode.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (6)
1. extend a method for Ethernet switch data transmission distance, it is characterized in that, comprise the following steps:
S1, PHY unit send auto-negotiation to long range propagation port and notice the negotiation pulse signal being fixed as 10M half-duplex, these two kinds of speed dual-modes of 10M full duplex;
S2, PHY unit by both sides' link negotiation under the steady rate transmission mode of 10M;
S3, MAC unit opens the flow control mode of long range propagation port, closes the flow control mode of first line of a couplet port.
2. the method for prolongation Ethernet switch data transmission distance according to claim 1, it is characterized in that: before step S1, also comprise step S0, judge whether to need the transfer of data of long distance, if needed, then by hand equipment being arranged current operation mode is prolongation pattern, and enter step S1, if do not needed, then by hand equipment being arranged current operation mode is general mode, and terminates.
3. one kind extends the system of Ethernet switch data transmission distance, it is characterized in that: comprise MAC & PHY unit, memory cell, main power source unit, clock unit, reset unit, mode switch, network interface unit, network transformer, wherein, described memory cell, main power source unit, clock unit, reset unit is connected with described MAC & PHY unit respectively, described mode switch respectively with described reset unit, MAC & PHY unit connects, described network interface unit is connected with described MAC & PHY unit through described network transformer.
4. the system of prolongation Ethernet switch data transmission distance according to claim 3, it is characterized in that: described network transformer has two at least, network transformer described in one of them is connected with POE power supply unit.
5. the system of prolongation Ethernet switch data transmission distance according to claim 4, is characterized in that: described MAC & PHY unit is connected with LED unit, and described POE power supply unit is connected with described LED unit.
6. the system of prolongation Ethernet switch data transmission distance according to claim 5, is characterized in that: described POE power supply unit is connected with power subsystem.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510225836.6A CN104954208A (en) | 2015-05-06 | 2015-05-06 | Method and system for extending data transmission distance of Ethernet switch |
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| CN201510225836.6A CN104954208A (en) | 2015-05-06 | 2015-05-06 | Method and system for extending data transmission distance of Ethernet switch |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106533996A (en) * | 2017-01-11 | 2017-03-22 | 深圳市立全鼎盛科技有限公司 | Network cable switch of extra long distance transmission |
| CN108063736A (en) * | 2016-11-09 | 2018-05-22 | 中车株洲电力机车研究所有限公司 | A kind of industrial ethernet switch that long-distance cable is supported to communicate and control method |
| CN108123900A (en) * | 2016-11-30 | 2018-06-05 | 杭州海康威视数字技术股份有限公司 | Ethernet switch and its remote transmission method |
| CN108848566A (en) * | 2018-06-12 | 2018-11-20 | Oppo广东移动通信有限公司 | Wireless communication transmission method, device, mobile terminal and computer-readable storage medium |
| CN111404699A (en) * | 2020-03-18 | 2020-07-10 | 深圳市海纳时代电子有限公司 | Ethernet power supply signal amplification and signal extender of POE technology |
| CN117978559A (en) * | 2024-04-01 | 2024-05-03 | 广东优力普物联科技有限公司 | Waterproof PoE extender and method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108063736A (en) * | 2016-11-09 | 2018-05-22 | 中车株洲电力机车研究所有限公司 | A kind of industrial ethernet switch that long-distance cable is supported to communicate and control method |
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| CN106533996A (en) * | 2017-01-11 | 2017-03-22 | 深圳市立全鼎盛科技有限公司 | Network cable switch of extra long distance transmission |
| CN108848566A (en) * | 2018-06-12 | 2018-11-20 | Oppo广东移动通信有限公司 | Wireless communication transmission method, device, mobile terminal and computer-readable storage medium |
| CN108848566B (en) * | 2018-06-12 | 2021-02-02 | Oppo广东移动通信有限公司 | Wireless communication transmission method, device, mobile terminal and computer readable storage medium |
| CN111404699A (en) * | 2020-03-18 | 2020-07-10 | 深圳市海纳时代电子有限公司 | Ethernet power supply signal amplification and signal extender of POE technology |
| CN117978559A (en) * | 2024-04-01 | 2024-05-03 | 广东优力普物联科技有限公司 | Waterproof PoE extender and method |
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Application publication date: 20150930 |
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