Method for self negotiation adopting broad pulse

A wide-pulse, self-negotiation technology, applied in the field of Ethernet communication, can solve the problems of Ethernet self-negotiation, pulse identification, equipment failure to perform self-negotiation and establish links, etc., and achieve the effect of extending the effective transmission distance

Active Publication Date: 2009-02-18
ANALOGIX CHINA SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the distance between the devices performing self-negotiation is greater than 100 meters, due to the influence of attenuation, crosstalk, interference and other factors, this specified pulse will not be recognized by the devices performing self-negotiation, so the distance between devices Unable to auto-negotiate and establish a link
[0006] However, a technical solution on how to perform auto-negotiation in a long-distance Ethernet network over 100 meters has not yet been proposed

Method used

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  • Method for self negotiation adopting broad pulse
  • Method for self negotiation adopting broad pulse
  • Method for self negotiation adopting broad pulse

Examples

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Embodiment Construction

[0019] In this embodiment, a method for performing autonegotiation by using wide pulses is provided to solve the problem that the quality of autonegotiation pulse information is degraded or unrecognizable when the transmission distance in Ethernet is higher than 100 meters.

[0020] In the method for auto-negotiation using wide pulses according to an embodiment of the present invention, wide pulses are used as negotiation pulses for auto-negotiation between devices in a network (ie, Ethernet), wherein the width of the wide pulses is 200 ns to 2000 ns.

[0021] Specifically, the width of the wide pulse can be determined according to the size of the distance that needs to be transmitted. Preferably, when the transmission distance is 500 meters (about), the width of the wide pulse can be set to about 400ns. When the network distance is 1000 The pulse width can be determined as a value in the range of 400ns (around) to 1000ns (around).

[0022] Such as image 3 As shown, the wide...

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Abstract

The invention discloses an auto-negotiation method using a wide pulse. The method uses the wide pulse (WLP) as a negotiation pulse for auto-negotiation between the devices in the ethernet, wherein the width of the wide pulse is from 200ns to 2000ns. The adoption of the invention can effectively conduct auto-negotiation under the condition of the distance between the devices longer than 100 meter, thereby the effective transmission distance of the ethernet is effectively expanded.

Description

technical field [0001] The invention relates to the field of Ethernet communication, and particularly relates to a method for performing self-negotiation by using wide pulses. Background technique [0002] In Ethernet, in order to establish a link that can be supported by the devices and is as efficient as possible between the communicating devices, the devices need to perform self-negotiation to learn about other devices' working capabilities, supported rates and other attribute information. [0003] Take 100Base-Tx in IEEE802.3 as an example, such as figure 1 As shown, both device A and device B send out fast link pulses (FLP), and each device obtains the information of the peer device from the fast link pulse (FLP) after receiving the fast link pulse (FLP) of the peer device , and then each device sets its speed and duplex to the optimal mode supported by both parties, and starts to send a Fast Ethernet idle signal (FAST ETHERNET IDLE), and then establishes a link. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04L29/06
Inventor 姚飞郝建斌卓铭宋红东
Owner ANALOGIX CHINA SEMICON
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