Proactive and AoI-Aware Failure Recovery for Stateful NFV-Enabled Zero-Touch 6G Networks: Model-Free DRL Approach. - Amirhossein Shaghaghi; Abolfazl Zakeri; Nader Mokari; Mohammad Reza Javan; Mohammad Behdadfar; Eduard A. Jorswieck (IEEE Trans. Netw. Serv. Manag., 2022)