Chulhee Cho

Performance Analysis of Inter-Domain Handoff Scheme Based on Virtual Layer in PMIPv6 Networks for IP-Based Internet of Things

Lately, we see that Internet of things (IoT) is introduced in medical services for global connection among patients, sensors, and all nearby things. The principal purpose of this global connection is to provide context awareness for the purpose of bringing convenience to a patient’s life and more effectively implementing clinical processes. In health care, monitoring of biosignals of a patient has to be continuously performed while the patient moves inside and outside the hospital. Also, to monitor the accurate location and biosignals of the patient, appropriate mobility management is necessary to maintain connection between the patient and the hospital network. In this paper, a binding update scheme on PMIPv6, which reduces signal traffic during location updates by Virtual LMA (VLMA) on the top original Local Mobility Anchor (LMA) Domain, is proposed to reduce the total cost. If a Mobile Node (MN) moves to a Mobile Access Gateway (MAG)-located boundary of an adjacent LMA domain, the MN changes itself into a virtual mode, and this movement will be assumed to be a part of the VLMA domain. In the proposed scheme, MAGs eliminate global binding updates for MNs between LMA domains and significantly reduce the packet loss and latency by eliminating the handoff between LMAs. In conclusion, the performance analysis results show that the proposed scheme improves performance significantly versus PMIPv6 and HMIPv6 in terms of the binding update rate per user and average handoff latency.

Design and performance analysis of a cost-effective proxy-LMA mobility management scheme in IP-based mobile networks with global mobility support

Interlocking with a heterogeneous network is important because mobile users (MUs) who navigate on next-generation (NG) wireless networks want to be provided with undisrupted network services. Unfortunately, there have been few studies on methods of guaranteeing global mobility. To enhance global mobility and interoperability within the NG network environment, in this paper, we propose a proxy-local mobility anchor (Proxy-LMA) system, a mobile IP-based global inter-networking system. The purpose of the proposed Proxy-LMA system is to expand the boundary of mobility with respect to the existing mobility management protocols (PMIPv6 and MIPv6), in order to guarantee global mobility and interoperability within a heterogeneous network environment. The results revealed that the proposed Proxy-LMA system was more efficient than the other methods in terms of the signal cost and delay in a heterogeneous network environment such as wireless sensor networks.

Performance analysis of DNS-assisted global mobility management scheme in cost-optimized proxy mobile IPv6 Networks

Proxy Mobile IPv6 (PMIPv6) is designed to provide a network-based localized mobility management protocol, but it does not handle the global mobility of hosts. In this paper, we propose a location management scheme based on Domain Name System (DNS) for PMIPv6. In this proposed scheme, DNS as a location manager provides PMIPv6 for global mobility. In addition, a paging extension scheme is introduced to PMIPv6 in order to support large numbers of mobile terminals and enhance network scalability. To evaluate the proposed location management scheme, we establish an analytical model, also formulate the location update and the paging cost, and analyse the influence of the different factors on the total signalling cost. The performance results show how the total signal cost changes under various parameters.

Design and performance analysis of a dynamic-paging AAA mobility management scheme for PMIPv6-based wireless networks

Proxy mobile IPv6 (PMIPv6) is a network-based mobility management protocol. It does not require the involvement of the mobile node (MN) in mobility management. However, MN between the mobile access gateway (MAG) and the local mobility anchor (LMA) in a message to the signalling delivery process can cause high overhead. Moreover, even LMA between PMIPv6 domains could cause high signalling overhead. In this paper, we propose a dynamic-paging authorisation, authentication and accounting (AAA) mobility management scheme (DP-AAA) to apply dynamic paging to reduce signalling overhead and to support global mobility in PMIPv6 domains. The dynamic paging scheme does not provide binding updates to MNs that are in a dormant state. According to traffic patterns and mobility, the MNs domain can be determined dynamically in the paging area. Performance analyses indicate that the proposed scheme performs better than static paging and PMIPv6.

Hashing-based lookup service in mobile ad-hoc networks with multi-hop stretchable clustering

We propose a cluster-based hashing lookup service for mobile ad hoc networks (MANETs) which consists of a multi-hop stretching clustering scheme and a size-based hashing lookup service. As a solution to the k-hop minimum dominating set, our connectivity-based stretchable clustering (CSC) scheme aims to minimise the number of clusterheads which are responsible for maintaining the cluster backbone. Based on the cluster topology, we present a cluster-based hashing lookup service (CHLS) which eliminate the issues of the grid system. Our method uses a size-based hash function and allows multiple bindings between one node and lookup servers, in order to reduce query delay time. They are scattered evenly in the networks by the multiple anchor clusters distribution algorithm. The present study concludes with extensive experiments showing that the CSC scheme attains stability with low leaving rate and the CHLS scheme has low communication overhead with a reasonably small query delay time.

Security analysis of fast inter-LMA domain handover scheme in proxy mobile IPv6 networks

Abstract The PMIPv6 is vulnerable to various security threats such as the DoS or redirect attacks. In this paper, we analyzed the Kang–Park & ESS-FH scheme, and proposed an Enhanced Security scheme for FPMIPv6 (ESS-FP). Based on the CGA method and the public key Cryptography, ESS-FP provides a strong key exchange and key independence in addition to improving the weaknesses of FPMIPv6. The proposed scheme was formally verified based on Ban-logic, and its handover latency was analyzed and compared with that of the Kang–Park scheme & ESS-FH. In addition, we proposed an inter-domain fast handover scheme for PMIPv6 using the proxy-based FPMIPv6.

Design and Performance Analysis of Sensor Proxy-AAA Authentication Scheme Based on Fast Handover and Forwarding Mode for IP-based Internet of Things

Recen tly interest in Internet of Things(I oT) is increasing, and a variety of the security technol ogies tha t are suitable for Internet of Things has being studied. In order to main tain the trustw orth y connectivity and the accessibility of distributed IoT, it is importan t to establish secure links for endto-end comm unica tion with proper authen tica tion. AAA technol ogy is curren tly the best way of resol ving dela y issue when introd ucing authen tica tion process of mobile switching. How ever, there are still a number of issues among which the dela y time issue from authen tica tion and authoriza tion grea tly inf uences the process. AAA applica tion in mobile IP environmen t cannot f uen tly support continuous and fast handov er in both intra-domain and inter-domain. Mobile IPv6 (MIPv6) is a host -based protocol supporting gl obal mobility . On the other hand, Proxy Mobile IPv6 (PMIPv6) is a netw ork-based protocol supporting localized mobility . This paper , the additional cost from combina tion of PMIPv6, authen tica tion, authoriza tion and accoun ting (AAA) and the way of red ucing extended dela y time will be explained. First , a new authen tica tion scheme (Proxy -AAA) is proposed tha t supports forw arding mode and fast handov er mode betw een other local mobility anchors (LMAs). Second, configur cost anal ysis model based on Proxy -AAA. Based on theoretical anal ysis, it was confirme tha t the cost is affected by average arriv al rate and residence time. Receiv ed on 26 November 2016; accepted on 13 July 2017; published on 13 September 2017

Design and Performance Analysis of Sensor Proxy-AAA Authentication Scheme Based on Fast Handover and Forwarding Mode for IP-Based Internet of Things

Recently, with the development of IoT technology, a wireless sensor network technology capable of real-time management by receiving information wirelessly through various kinds of sensors has been actively developed. Hence, reducing the signaling cost becomes an important issue because most of the sensors are powered by battery only. In addition, since the Internet of objects is open on the Internet in object environments, security issues related to authentication of users accessing wireless networks are very important. AAA technology is the best possible way these days of resolving delay issue when introducing authentication process of mobile switching. However, despite long development in AAA technology, the mobility management in wireless network environment has yet to be researched further. To solve these problems, we propose a Proxy-Authentication Authorization Accounting (Proxy-AAA) authentication scheme. This places the AAA server in the LMA so as to the cost of authentication by means of a short, simple mobile authentication. The proposed method reuses the LMA-based session key in the authentication process when moving within the domain, and reuses the AAA server based session key when moving between domains. The AAA server of the scheme will be deployed on Local Mobility Anchor (LMA), making up for the shortage of simple fast handover authentication and hierarchical authentication, and further reducing the cost of intra-domain authentication.

Analytical Approach of Proxy-LMA Mobility System in Heterogeneous IP-based Mobile Networks

Mobile users want to be provided with undisrupted network services when they navigate on the Next-Generation (NG) wireless networks. For that, interlocking with a heterogeneous network is important, but there have been few studies on the method for guaranteeing global mobility. Thus, this paper proposes the Proxy-LMA technique, the mobile IP-based global inter-networking system, to enhance global mobility and interoperability within the Next-Generation (NG) network environment. The purpose of the proposed Proxy-LMA system is to expand the boundary of the mobility with regards to the existing mobility management protocol (PMIPv6 and MIPv6) in order to guarantee global mobility and interoperability within the heterogeneous network environment. The results of the performance evaluation showed that the proposed Proxy-LMA system was more efficient than other methods from the standpoint of signaling cost and delay in the heterogeneous network environment.

Cost-Effective Proxy-LMA Mobility Management Scheme in Mobile Networks with Global Mobility Support

Mobile users (MUs) want to be provided with undisrupted network services when they navigate on the Next-Generation wireless networks (NGWNs). For that, interlocking with a heterogeneous network is important, but there have been few studies on the method for guaranteeing global mobility. Thus, this paper proposes the Proxy-LMA technique, the mobile IP-based global inter-networking system, to enhance global mobility and interoperability within the NGWN. The purpose of the proposed Proxy-LMA system is to expand the boundary of the mobility with regards to the existing mobility management protocol (PMIPv6 and MIPv6) in order to guarantee global mobility and interoperability within the heterogeneous network environment. The results of the performance evaluation showed that the proposed Proxy-LMA system was more efficient than other methods from the standpoint of signaling cost and delay in the heterogeneous network environment.