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

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 ...

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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 or gateway through standard Ethernet. A user needs about 70 to 100 yuan; a new network cable, which means that the wall or doors and windows of the user's house need to be perforated when entering the house. The operation is troublesome and affects the appearance. Some users may find it difficult to accept.

[0005] In addition, although the Cisco system provides an Ethernet access method using telephone line transmission, its solution is based on the VDSL upload Ethernet protocol (Ethernet over VDSL) technology, which uses modulation to transmit data, which is similar to ADSL technology. Modems are installed on both sides of the line, so it also has defects such as high cost and complicated installation and operation

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