To achieve cost-effective mobile fronthaul (MFH) with a timedivision-multiplexing passive optical network (TDM-PON), we present a prototype optical-mobile cooperation interface, which converts mobile upstream scheduling information to transmission request information for the mobile upstream data that will arrive at each optical network unit (ONU). By basing bandwidth allocation on the request information converted by the interface, low-latency upstream transmission can be achieved on the MFH with the TDM-PON. We demonstrate the time spent for the conversion process in the prototype interface under various and practical conditions for the first time.

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Local 5G system is widely used for industrial application, it is important to ensure redundancy to recover quickly in the event of failure for providing highly reliable services. On the other hand, the cost reduction of the mobile system becomes a problem in terms of having functions only for the cases of failure. We propose cost-effective redundant mobile fronthaul (MFH) system that uses only short-reach transceivers for the first time. Numerical simulations indicate that this system can provide 20-km redundant-line transmission with 8% redundancy by Reed-Solomon coding function.