Cross-layer Design And Distributed Enhancements For Mobility Management In Future Networks

In the area of the new generation information network technology, Future Networks will play an important role in the developing tendency. Most countries in the world give prior focus on future networks which has been the strategic demand for enhancing international competitiveness and occupying the high ground of information technology. Future Networks contain cloud computing and the next generation networks, where a huge number of mobile nodes (MN) can perform dynamic movement across heterogeneous networks. Since Mobility Management is currently an important project of Future Networks, this dissertation aims to design an effective system of mobility management for Future Networks.Aiming at the limitations of high authentication latency and vulnerable mobility, a novel secure cross-layer host-based mobility management scheme is proposed, which is named as Hierarchical Authentication Key Management (HAKM). To minimize the authentication latency in NGNs and provide protection against an assortment of attacks, this dissertation combines Session Initiation Protocol (SIP) with Hierarchical Mobile IPv6(HMIPv6) to perform local authentication for session mobility. The experimental results demonstrate that the proposed scheme has lower authentication latency and efficient host-based mobility management as compared to existing schemes.For the limitations associated with network-based mobility such as handover latency, packet loss, and the authentication complexities, a novel network-based scheme is proposed, which is named as Cross-layer Localized Authentication Mechanism (CLAM). The proposed mechanism integrates Proxy MIPv6and SIP to handle the authentication locally in real-time and non-real-time communications. The basis of the authentication mechanism in CLAM is the use of symmetric cryptographic and one-way hash operations which makes it simple to be implemented in mobile devices. Both performance analysis and numerical results demonstrate that the proposed scheme outperforms the existing approaches regarding handover latency, signaling cost, packet loss, and effectiveness of authentication mechanism.Targeting the limitations in centralized mobility management and inter-domain handover in distributed mobility, a Secure Network-based Distributed Mobility Management (SN-DMM) scheme is proposed to focus on the performance issues such as single-point failure, non-optimal routing, low scalability, authentication latency, and signaling messages overhead. In SN-DMM, the control and data plane in traditional mobility anchors are separated into Control Mobility Anchor (CMA) and Data Mobility Anchor (DMA). Additionally, SN-DMM provides strong authentication procedure based on symmetric cryptographic and collision free one-way hash function to make the DMM secure. The acquired results reveal that SN-DMM performs outstandingly while managing both mobility and authentication in distributed manner.