Efficient Micro-Mobility with Congestion Avoiding in Two-Nodes Mobile IP Network Architecture
This paper 1 considers two nodes (Base Station (BS), Access Gateway (AG)) mobile network architecture based on a all IP infrastructure. To manage handovers, we propose to use a multicast tree from an AG to some BS on which mobility could be predicted. We focus on a distributed process to control multicast functionalities in each IP router to obtain a constraint delay multicast tree compatible with the embedded IP routing that minimises the number of used links. After defining the related problem from a graph theory point of view, we show that it is NP-complete and not approximable. Then, we describe a distributed algorithm and we compare its performance to the ones of a proposed centralised algorithm.