RESTORATION OF USER EQUIPMENT CONTROL IN THE PRESENCE OF COMMUNICATION LINK FAILURE BETWEEN PACKET SWITCHED AND CIRCUIT SWITCHED CONTROLLING NODES BY RELAYING NODES
User equipment control is restored in the presence of communication link failure between a network node that provides control of packet switched connections and a network node that provides control of circuit switched connections. A communication service is provided to a UE by a Serving MME and a Serving MSC in a communication system. Upon detecting that one or more links that enable communication between the Serving MME and the Serving MSC have failed, another MME and/or MSC are/is identified within the network that have/has fully operational links with the Serving MSC and/or Serving MME. The identified MME and/or MSC are/is established as a Relaying MME and/or Relaying MSC. Control of the UE continues with MME/MSC messaging being directed to the Relaying node(s), and the Relaying node(s) relaying the messages to their serving counterparts (Relaying MME relays to Serving MME, Relaying MSC relays to Serving MSC).
