5G Fronthaul Transmission

The semi-active CWDM system adopts asymmetric equipment form, which is composed of AU active CWDM equipment, AAU passive CWDM equipment, color optical module at DU side, color optical module at AAU side and network management system. The semi-active CWDM can provide protection and automatic switching mechanism, and support management, operation and maintenance of front-haul network. DU Active CWDM equipment and AAU passive CWDM equipment multiplex several wavelengths for transmission to save fiber resources. The system can support the mixed transmission of 4G / 5G services at the same time to realize the unified front-haul transmission of 4G / 5G.

This solution solves the network management monitoring problem of 5G front-haul passive WDM equipment carrier network solution. It features low construction cost, network management, line protection function, convenient and flexible for system maintenance, and it is also very helpful for operators to divide the maintenance interface. The network management monitoring platform includes the network management unit, which supports visual network management. Through the function card, it can intuitively detect the receiving and emitting status of each line, realize the functions of fault diagnosis accurate positioning, alarm display, alarm statistics, alarm processing, etc., through optical line protection card realize the 1+1 link protection, real-time monitoring of main and spare fiber power, automatic protection switching and other protection function, dual power supply, optional AC/DC power, high redundancy.

Pure Passive 5G Front-haul Transmission Solution

Semi-Active 5G Front-haul Transmission Solution 

At AAU side adopts pure passive WDM, at DU side combines the passive WDM with the optical power monitoring module to realize the optical signal monitoring of λ1~λn between the DU and AAU.

Semi-Active (with Protection Function) 5G Front-haul Transmission Solution

1. At AAU side adopts pure passive WDM, at DU side combines the passive WDM with the optical power monitoring module to realize the optical signal monitoring of λ1~λn between the DU and AAU.

2. On the main and spare fibers through 5:5 splitter and OLP-BIDI to realize automatic optical cable fault protection.

 Semi-Active (with Protection and Optical Cable Monitoring Function) 5G Front-haul Solution

1. At AAU side adopts pure passive WDM, at DU side combines the passive WDM with the optical power monitoring module to realize the optical signal monitoring of λ1~λn between the DU and AAU.

2. On the main and spare fibers through 5:5 splitter and OLP-BIDI to realize automatic optical cable fault protection. At the same time, the optical cable monitoring system can real-time detect line fault of the failure fiber.