An Efficient Macro Mobility Scheme Supporting Fast Handover in Hierarchical Mobile IPv6.
ABSTRACT People who use wireless device for Internet are gradually increasing. For mobility service, MIPv6 has been proposed by IETF.
With no restriction on node’s geographical location, mobility is provided to a mobile node (MN) by MIPv6. However, MIPv6 has
critical points, such as handover latency resulting from movement detections, IP address configurations and location updates
which is unacceptable in real-time application. To make up for it, hierarchical MIPv6 (HMIPv6) has been proposed. HMIPv6 guarantees
to reduce handover latency, because the MN only registers the new addresses at mobility anchor point (MAP) when the MN moves
around access routers in the same MAP domain. HMIPv6 still has packet loss problem when the MN moves from one MAP to another.
In this paper, we propose an efficient handover scheme which reduces packet loss when the MN moves between MAP domains. We
adopt the fast handover method from FMIPv6 (fast MIPv6) for proposed scheme.
Conference Paper: Blind hexapod walking over uneven terrain using only local feedback[Show abstract] [Hide abstract]
ABSTRACT: Biological studies on animal walking and running have contributed to the control of mobile robots. Taking inspiration from such studies, a hybrid impulse-position (HIP) controller has been developed for legged locomotion over uneven terrain. The HIP controller generates joint torques during the stance phase of each leg cycle to propel and stabilize the body, and is meant to operate with CPG-based coordination strategies and ground search routines to generate robust walking, running, jumping and climbing. Joint torques are computed without extracting information about the ground and using only local feedback. No feedback of body state is needed to regulate body motion, which is preferred because inertial sensors are rife with issues. The algorithm is applied to a hexapod system in simulation, and an experimental system is being built to further investigate the approach. The HIP controller has potential for expansion to bipeds, quadrupeds and other biologically-inspired forms.Robotics and Biomimetics (ROBIO), 2011 IEEE International Conference on; 01/2011
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ABSTRACT: Mobile IPv6 (MIPv6) is a host-based protocol supporting global mobility while Proxy Mobile IPv6 (PMIPv6) is a network-based protocol supporting localized mobility. This paper makes its focus on how to reduce the longer delay and extra cost arising from the combination of authentication, authorization and accounting (AAA) and PMIPv6 further. Firstly, a novel authentication scheme (Proxy-AAA) is proposed, which supports fast handover mode and forwarding mode between different local mobility anchors (LMAs). Secondly, a cost analysis model is established based on Proxy-AAA. From the theoretical analysis, it could be noted that the cost is affected by average arrival rate and residence time.02/2012; 13(1). DOI:10.7472/jksii.2012.13.1.15
Conference Paper: Analytical method for L3 handover latency evaluation[Show abstract] [Hide abstract]
ABSTRACT: Recent years in the field of mobile communications have brought two significant requirements - seamless service delivery and Quality of Service provisioning. Since seamless mobility goes hand in hand with Mobile IPv6 protocol and since various handover schemes of this protocol are trying to solve the QoS issue, there is a need for comparison of such handover schemes. In this paper we are presenting a method for evaluation of the Layer 3 handover schemes from the handover latency point of view. We are also providing results of this comparison for four most common handover schemes of Mobile IPv6 (MIPv6, FMIPv6, HMIPv6 and F- HMIPv6). However, the method is applicable to any other current or future handover scheme.Proceedings of the European conference of systems, and European conference of circuits technology and devices, and European conference of communications, and European conference on Computer science; 11/2010