A new approach for routing plane construction in future multi-plane routing based wireless IP access networks

There has been a rapid rise in the IP traffic throughout the Internet which takes advantage of the already established widespread IP infrastructure. Different suggestions are being explored to facilitate the next-generation access networks via IP mechanisms, with a growing trend towards a flat-IP structure and novel topological set-ups in the backhaul. Aligned with this evolution, there are increasingly more user applications flooding the Internet that calls for a consistent routing strategy to minimize loss in data transmission. In this paper, Multi-Plane Routing (MPR), which incorporates various aspects in all-IP infrastructure will be studied under the new access network structure. MPR is based on Multi-Topology Open Shortest Path First (MT-OSPF) principle and divides the physical network topology into several logical Routing Planes (RPs). The offline Traffic Engineering (TE) strategy for MPR has been optimized using a heuristic hop-constraint solution that suits the “flattened” network realized through the incorporation of direct communication between Aggregation Routers. With our approach, despite of a higher number of Ingress —Egress pairs for traffic in the access network, the number of RPs has been kept to the desirable level whilst the reliability indicator and the path diversity index ratio have increased up to 47% and 33% respectively. Our proposed MPR-based offline approach has also shown improvement compared with the Multi-Protocol Label Switching (MPLS) offline approach.