Ethernet transmission method and Ethernet transmitting/receiving device based on coaxial cable network

Abstract

The invention relates to an ethernet tranceiving device on the basis of a coaxial cable network and a method for transmitting the Ethernet, the receiving device is used in an ethernet access point and each coaxial terminal and comprises a an analog interface which is connected with the coaxial cable, a received signal detecting module which is connected with the analog interface and used to detect electric level amplitudes for the received signals form the analog interface and a receiving automatic amplifying module which is connected with the received signal detecting module and self-adaptively adjusts magnification factors according to results for detecting the electric level amplitudes by the received signal detecting module, which enables the received signals after amplification to reach the same output electric level. The invention realizes the intercommunications between the access point of the ethernet and each coaxial terminal and between each coaxial terminal, thereby a CSMA / CD MAC layer of the ethernet can be used in applied environment of wide electric coaxial cable network, and the realizing cost is low.

Description

technical field [0001] The invention relates to an Ethernet transmission technology, in particular to an Ethernet transceiver device and an Ethernet transmission method based on a coaxial cable network. Background technique [0002] In the existing cable television fiber coaxial network (HFC), the TV program is transmitted from the front end through the optical fiber to the optical coaxial terminal close to the user in the TV network (generally, an optical coaxial terminal covers the surrounding 300 to 500 users. ), after the optical signal is converted into an electrical signal at the optical coaxial terminal, and then the TV signal is transmitted to each residential house through the residential building through the coaxial cable distribution network. With the growing demand for new services of bidirectional transmission (for example, interactive digital TV, broadband services such as multimedia communications such as data, voice, and images on the cable television network...

AI Technical Summary

Problems solved by technology

In the case that the sending level of the transceiver device of the Ethernet signal access point does not change, if the transmitting end of the transceiver device of the access point or the coaxial terminal sends a signal according to the IEEE802.3 standard transmission voltage, the receiving end also Receive the signal at the reference level according to the standard, because the branch equipment in the coaxial distribution network makes the transmission attenuation between the access point and the coaxial terminal and between the coaxial terminals larger, which affects the correct decoding of the receiving end, and the receiving end Cannot receive the signal transmitted through the coaxial distribution network

Images