Proactive and AoI-aware failure recovery for stateful NFV-enabled zero-touch 6G networks: Model-free DRL approach A Shaghaghi, A Zakeri, N Mokari, MR Javan, M Behdadfar, EA Jorswieck IEEE Transactions on Network and Service Management 19 (1), 437-451, 2021 | 19 | 2021 |