EOC (Ethernet over coax) self-loop detection system and method

Abstract

The invention relates to a self-loop detection system and method, and in particular relates to an EOC (Ethernet over coax) self-loop detection system and method. The EOC self-loop detection system comprises a head end device and a terminal module, wherein the head end device and the terminal module are communicated, the terminal module comprises a protocol device, an exchange device and a detection controller, the head end device is connected with the exchange device through the protocol device, and the detection controller is respectively connected with the protocol device and the exchange device; therefore, the terminal module is provided with a self-loop detection control circuit so that the communication of an EOC terminal generating a self-loop situation with an EOC head end can be immediately interrupted when the terminal module generates the self-loop situation, and the influence on the communication connection of the EOC terminals of other users with the EOC head end generated due to paralysis of the EOC head end is avoided; and meanwhile, information of the EOC terminal generating the self-loop situation can be precisely transmitted to a system maintenance system so that the maintenance of the system is facilitated.

Description

technical field [0001] The invention relates to a self-loop detection system, in particular to an EOC self-loop detection system and method. Background technique [0002] The Ethernet data transmission over coaxial cable (Ethernet over COAX, referred to as EOC) system is to carry out Ethernet data signal transmission in the coaxial cable, that is, to carry out data transmission in the coaxial cable after the Ethernet signal is modulated, and its frequency does not occupy The cable TV frequency segment can coexist with the cable TV frequency. Because of its simplicity, stability, safety, and low cost, it is widely used in the two-way network transformation technology. [0003] The EOC system is mainly composed of the EOC head end and the user EOC terminal system, specifically: after the EOC head end device receives the signal from the cable TV and the data signal from the Internet, it modulates the data signal and merges it with the cable TV signal in FDM mode. Then send it ...

AI Technical Summary

Problems solved by technology

[0004] However, when the user misoperates the EOC terminal, it may cause a self-loop phenomenon, and when the EOC headend receives the broadcast signal of the EOC terminal, it will cause a broadcast storm, resulting in link congestion, that is, the EOC headend network is paralyzed, making Other user EOC terminals cannot communicate with the EOC headend, causing serious communication failures

Images