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Inter-technology handoff is a complex process that involves several procedures including resource management, mobility management, and security functions. These procedures increase the handoff delay as the involved signaling occurs between different administrative domains. Hence, seamless handoff across different access technologies is conditioned on developing efficient architectures and mechanisms...
The paper is about mobile Stream Control Transmission Protocol (mSCTP) and the problems related to simultaneous mobility. Simultaneous mobility is when the both endpoints of a communication session are mobile and they move at about the same time. mSCTP works well in the case of non-simultaneous mobility where the SCTP association is established between a mobile endpoint and a stationary one. In the...
Application Layer Multicast (ALM) has become a popular form of content distribution. It shows some favourable properties like inherent scalability and the overcoming of the traditional client-server bottleneck. In the future, a large fraction of the participants in ALM systems will be mobile (eg. smart-phones or netbooks) and demand for a proper inclusion and mobility handling. After analyzing current...
The network mobility (NEMO) basic support protocol is an extension of mobile IP that enables an entire network to maintain the Internet connection when it changes its attachment point to the Internet. However, it gives rise to high overhead, loss packet and long delay on the network link when a network as a unity moves frequently. These problems should seriously affect the communications, real time...
IMS is the new approach adopted by 3GPP towards networks convergence. It was designed to be access independent and ubiquitous. IMS already provides personal mobility for nomadic users, but still needs to deal with service continuity within non 3GPP networks. In this paper we propose a novel hybrid mobility management scheme, based on tight cooperation between fast handovers for mobile IPv6 (FMIPv6)...
Proxy mobile ipv6 (PMIPv6) protocol is a network-based mobility management protocol where many mobility messages performed by a network entity on behalf of a mobile node. In order to protect this protocol, an authentication method based on authentication option is presented in this paper. We also develop an analytic model to evaluate the performance of this PMIPv6 authentication protocol.
Voice over Internet protocol (VoIP) is a prevalent multimedia application nowadays. For mobile nodes (MNs) using VoIP services in wireless networks, the handoff issues need to be taken into account. Stream control transmission protocol (SCTP) is a potential transport layer protocol with multi-homing and multi-streaming functions. Mobile SCTP with dynamic address reconfiguration (DAR) extends SCTP...
To deal with increasing number of the mobile devices and applications in the next generation all-IP wireless networks, effective mobility management has become a critical problem. In this paper, we propose a new mobility management architecture, named I-HSIP, which integrates host identity protocol (HIP) and session initiation protocol (SIP) to handle TCP and UDP applications respectively. In this...
This paper investigates different mobility protocols (network layer mobility protocols Mobile IPv4 and Mobile IPv6, the transport layer mobility protocol mSCTP) as an approach to achieve interworking between 3G cellular networks (such as UMTS) and IEEE's 802.11 wireless LANs (WLANs). A simulative model has been developed using OPNET to support the study. Simulation results supported mSCTP as the best...
The importance of tactical networks that support military operations is well known in the DoD community for their ability to rapidly deploy anywhere at anytime without pre-existing infrastructure. Tactical networks provide a battle space where warfighters possess dynamic and ad hoc mobile communications to support operations against a broad array of threats. Managing mobility to provide undisrupted...
To overcome the drawbacks of the mobile IPv6 protocol on handling local mobility management, IETF proposed the HMIPv6 protocol which introduces an intermediate mobility anchor point (MAP) to hide the movement of a mobile node within a local area. However, the MAP forms a bottleneck in the network since all the traffic destined for its served nodes has to go through it. Most research on HMIPv6 focuses...
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