A Hierarchical and Distributed Handover Management Approach for Heterogeneous Networking Environments

A Novel Procedure for Coupling QoS Control and Handover Decision for Mobility Management

“…As presented in [1], the distribution of handover decision algorithm can provide greater flexibility to network operators as they will be able to achieve fine-grained handover decisions. In this approach, if the QoS requirements are not satisfied in a candidate connection path, the probability that MN switches to this candidate path is decreased.…”

“…The distributed decision algorithm in [1] is based on utility function model implemented in each QoS manager. When this algorithm is started, each QoS manager first negotiates its associated list of parameters.…”

“…Thus, to reduce the QoS signalling overhead cost of the AN method, we propose a new method based on coupling QoS negotiation with the handover decision algorithm presented in [1]. This algorithm is based on distributing the handover decision function over multiple entities within networks and terminals.…”

“…Notice that a set of decision parameters is associated to each entity belonging to this chain. The initial results, given in [1], lead us to focus on integrating QoS negotiation during handover decision phase. In this context, each entity in the decision chain checks its local decision parameters.…”

“…In this case, the QoS negotiation is triggered after the execution of a probable handover. Based on received QoS information about candidate point of attachments (PoAs), mobility manager in Daidalos decides which is the most appropriate PoA for 1 Daidalos and Ambient Network Ist projects aim to provide end-to-end QoS in heterogeneous environment including several mobile systems. They propose a global solution specifying network architecture with QoS and mobility management schemas.…”