Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Network apparatus for eliminating interference between transmission interfaces and method thereof

A transmission port and network device technology, applied in the direction of line transmission components, data exchange details, crosstalk reduction, etc., can solve problems affecting signal quality, interference, and signal mutual influence

Active Publication Date: 2009-07-22
REALTEK SEMICON CORP
View PDF2 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the prior art only considers the elimination of interference (echo and near-end crosstalk) in the same transmission port. In practice, network devices such as switches with several transmission ports often encounter interference from other transmission ports. interference
For example, in order to reduce the cost, the transformer (transformer) in the current multi-port switch (multi-port switch) often winds the coils of two or four transmission ports in the same component, because the internal coil of the transformer It will cause the signals to affect each other, so adjacent transmission ports will interfere with each other and affect the signal quality

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Network apparatus for eliminating interference between transmission interfaces and method thereof
  • Network apparatus for eliminating interference between transmission interfaces and method thereof
  • Network apparatus for eliminating interference between transmission interfaces and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Please refer to figure 1 , figure 1 It is a schematic diagram of an embodiment of a network device 100 for eliminating interference between transmission ports of the present invention. Without affecting the technical disclosure of the present invention, in this embodiment, the network device 100 is described as an 8-port switch (switch), which includes eight transmission ports A-H, wherein each transmission port A- Each H includes four channels, and each channel is constituted by a coil. For example, the transmission port A includes the channels A1-A4, the transmission port B includes the channels B1-B4, and so on. Usually one transmission port needs a transformer (transformer) to filter out the DC voltage. However, in order to save costs, manufacturers will wind two or four transmission port coils in the same component, such as figure 1 As shown, the coils of the transmission ports A, B, C, and D are wound in a transformer 110. In this way, the coils of the transmiss...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A network device for eliminating interference among transmitting ports comprises a plurality of transmitting ports and at least a cross-port near-end crosstalk canceller. The cross-port near-end crosstalk canceller is a special transmitting port which is coupled in a plurality of transmitting ports and used for eliminating the near-end crosstalk interference of other transmitting ports in a plurality of transmitting ports. The cross-port near-end crosstalk canceller is operated in time domain or frequency domain. In an embodiment, the network device is a switch.

Description

technical field [0001] The invention relates to a network device and its related method, in particular to a network device and its related method for eliminating interference between transmission ports. Background technique [0002] 1Gbase-T / 10Gbase-T Ethernet (Ethernet) system uses four pairs of unshielded twisted pair (Unshielded Twisted Pair, UTP) for full duplex (full duplex) bidirectional transmission, therefore, a transmission port will contain multiple channels, for example four channels. Usually, the signal transmitted by the transmitter of one channel (that is, a pair of unshielded twisted pair) will be interfered by the echo (Echo) caused by the receiver itself, and by the near-end string formed by the receivers of other channels. Tone (near end crosstalk, NEXT) interference. In the digital signal processing of the receiver, these interferences must be eliminated. Generally speaking, the least mean square finite impulse response canceller (LMS update FIRcanceller...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04B3/32H04L12/02
Inventor 黄亮维施至永郭协星
Owner REALTEK SEMICON CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com