VPNv4 ROUTE CONTROL FOR LTE X2 SON USING UNIQUE ROUTE TARGETS

Abstract

According to an embodiment, a network device automatically creates a more optimal route entry for inter-base station traffic to be transmitted between a local and a remote base station through a backhaul network. The network device automatically discovers an IP address of the remote base station used for inter-base station traffic based upon traffic transmitted by the local base station to the network device or transmitted between the local and the remote base stations. The network device generates a unique route target (RT) value based upon the remote IP address and inserts it into an import route target list.; Upon receiving a route update message including routes transmitted by a route reflector in the backhaul network, the network device installs a route entry into a routing table based upon determining that an RT value of one of the routes matches the unique RT value in the import route target list.

Description

Technical field [0001] The embodiments of the present invention relate to the field of networking, and more precisely, to network topology discovery and automatic creation of network routes between base stations for inter-base station services. Background technique [0002] The Third Generation Partnership Project (3GPP) defines standards and technical specifications called Long Term Evolution (LTE) for 3G mobile systems. Compared with the circuit-switched configuration used in previous cellular communication networks, LTE is designed to support packet-switched services, thereby providing seamless Internet Protocol (IP) between one or more packet data networks (PDN) in the user equipment (UE) device domain. ) Connectivity and there will be no interference during the geographical movement of the end user. [0003] Although the term "LTE" includes the evolution of Universal Mobile Telecommunications System (UMTS) radio access to Evolved UTRAN (E-UTRAN), it also includes non-radio as...

AI Technical Summary

Problems solved by technology

However, a given eNodeB may typically have around 20-30 neighboring eNodeBs at a time, each of these neighboring eNodeBs will require a route configured for each of its neighbors, requiring a huge and error-prone configuration and also costly A large amount of routing state to maintain in the network

Furthermore, since the number of eNodeBs in the network tends to fluctuate with network expansion, reconfiguration and maintenance, there is thus a huge administrative overhead for maintaining such static routes

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