RELATED APPLICATION

This application is claims priority to EP Appl. No. 19206014, filed Oct. 29, 2019, entitled METHOD AND SYSTEM FOR MOBILITY MANAGEMENT IN COMMUNICATION NETWORKS, by Bisti et al., the contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates generally to communication networks and, more particularly, to mobility management in communication networks comprising label switched networks.

BACKGROUND

Label switched networks are networks wherein data packets are forwarded on the basis of labels. A practical implementation of label switching could be based on Multiprotocol Label Switching (MPLS), which is an Internet Engineering Task Force (IETF) standardized protocol. According to MPLS, data packets entering the network at one node, called ingress, are classified into a Forwarding Equivalence Class (FEC). All data packets with a same FEC follow a same primary path (called Label Switched Path or LSP) to a destination node, called egress. The nodes of the network, including intermediate ones, take per-packet forwarding decisions based on label Forwarding Information Base (FIB) tables.

Wireless communication in high-speed vehicular mobility scenarios poses complex technical challenges across several layers of the ISO-OSI stack, including the physical layer (Layer 1), the data layer (Layer 2) and the network layer (Layer 3). Unlike a stationary environment, where roaming is rare and deferred communication is tolerated, in high-speed vehicular mobility scenarios handoff is a certainty. Continuous reliable wireless connection with seamless handoff and sustained communication for smooth operation is required. Moreover, as the train speed increases, communications between the train and infrastructure encounter major difficulties of maintaining such high-quality communication and yet there is no effective solution able to cope with the specific constraints of high-speed trains.

