M3 Wavenet: Multiband Massive Wavelength-Multiplexing Metro Networks Enabling User Direct Wavelength Connection

To achieve the ultra-low latency required by Beyond 5G, realizing direct wavelength connections between users is necessary. Metro networks will also need to accommodate massive multiple wavelengths, several tens of times greater than current wavelength-division multiplexing technology. In this paper, we propose a metro network architecture that achieves multi-band massive multiple wavelengths by using newly developed programmable wavelength selective switches (WSSs). The proposed network introduces a new paradigm of network design and control using Digital Twins. Furthermore, we investigate the impact of remotely located transceivers on the performance of metro networks with programmable WSSs for user direct wavelength connections. We quantify the resource efficiency of the remotely located transceiver model to demonstrate the feasibility of user direct wavelength connection.