Physical layer data transmitting method and receiving method and physical layer chip

A technology of a physical layer chip and a sending method, applied in the field of communications, can solve the problems of complicated installation of user-side equipment, complicated installation and operation, and affect the appearance, and achieve the effects of improving decoding error detection ability, increasing transmission distance, and easy maintenance.

Active Publication Date: 2007-08-29
NEW H3C TECH CO LTD
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Problems solved by technology

[0003] The ADSL access method can meet the primary Internet access needs of broadband users under limited conditions, such as web browsing, Email sending and receiving, and VOIP, etc., but it has defects such as low speed, high cost, and complicated installation of user-side equipment.
[0004] The traditional Ethernet access method provides users with a data access rate of 10Mbps or 100Mbps in a four-wire manner. Although it has the advantages of high bandwidth, high reliability, easy maintenance, and wide application, it can only be used in residential areas or corridors. Set up a switch everywhere, and pull a new network cable to the user's home, so as to directly connect to the Ethernet port of the network card o

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  • Physical layer data transmitting method and receiving method and physical layer chip
  • Physical layer data transmitting method and receiving method and physical layer chip
  • Physical layer data transmitting method and receiving method and physical layer chip

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Embodiment Construction

[0032] The technical solutions of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0033] The present invention aims at the disadvantages of low rate, high cost and complex installation of user-side equipment in the ADSL access method in the prior art, while the traditional Ethernet access method has defects such as high cost of network cable, troublesome operation and affecting the appearance , provides an inventive idea, that is, by adopting 4B3T encoding method in the physical layer processing flow of Ethernet to convert every four bits of data to be sent into three three-level symbols, thereby reducing the baud rate, and due to the cable The attenuation of high-frequency signals is much greater than that of low-frequency signals, so by reducing the baud rate, the attenuation of the signal during transmission in the twisted pair is greatly reduced, thereby greatly increasing the transmission dist...

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Abstract

The method includes steps: physical coding sub layer (PCSL) carries out code scrambling for data received from medium not related interface, and carrying out 4B3T encoding operation for scrambled data; transmitting encoded symbol sequence in three stage to sub layer connected to physical medium; the sub layer connected to physical medium converts symbol sequence in three stage received PCSL to pulse amplitude modulation signal (PAMS) in tree stage; through medium related interface and interface in use for interacting twisted-pair. The PAMS in tree stage is sent to twisted-pair for transmission. The invention also discloses method for receiving data in physical layer, and a physical chip. Through phone line, the invention realizes Ethernet connection. Advantages are: high bandwidth, reliability, and easy of maintenance of Ethernet, lowered installation cost, complexity, raised decoding and error detecting capability, and suitable to crosstalk under large number of pair of cables.

Description

technical field [0001] The invention relates to broadband access technology, in particular to a method for sending physical layer data, a method for receiving physical layer data and a physical layer chip, and belongs to the field of communication technology. Background technique [0002] The access mode of broadband access technology mainly includes ADSL access mode and Ethernet access mode. [0003] The ADSL access method can meet the primary Internet access needs of broadband users under limited conditions, such as web browsing, Email sending and receiving, and VOIP, etc., but it has defects such as low speed, high cost, and complicated installation of user-side equipment. [0004] The traditional Ethernet access method provides users with a data access rate of 10Mbps or 100Mbps in a four-wire manner. Although it has the advantages of high bandwidth, high reliability, easy maintenance, and wide application, it can only be used in residential areas or corridors. Set up a ...

Claims

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Application Information

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IPC IPC(8): H04L12/28H04L1/00H04L29/08H04Q11/04
Inventor 王明辉
Owner NEW H3C TECH CO LTD
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