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Network layer indications are not readily available upon a link change; therefore, general dependence on the network layer may introduce unnecessary delays due to network layer signaling for a simple link layer handover. If information could be gathered at link layer to determine the need for network layer signaling, then both the delay and signaling load could be really improved over the current...
A number of different protocols have been proposed to support the concept of wireless terminal mobility. One such protocol is SCTP which includes functionality to monitor the characteristics of the primary path and all alternate secondary paths connecting two hosts. This supports a basic mechanism by which traffic can be switched from a primary path to a secondary path in the case of a primary path...
In many areas of ICT the use of virtualization techniques has decoupled the binding between physical resources and functional roles assigned to them. While the use of virtualization in computing systems is already extremely popular, similar forms of virtualization have been proposed for the network infrastructure as well. In such a context, we propose a new paradigm that aims at extending the concept...
The multiple backhaul mobile access router (MAR) can provide high capacity and high performance Internet access for emerging mobile wireless applications. In this paper we improve the MAR with the capability to stripe traffic from clients over multiple available network devices. The MAR allows different backhauls to be used simultaneously and accommodates diverse policies. We present experimental...
Minimizing handoff latency and achieving near-zero packet loss is critical for delivering multimedia infotainment applications to fast-moving vehicles that are likely to encounter frequent handoffs. In this paper, we propose a dual-radio cross-layer handoff scheme for infrastructure-mode 802.11 Wireless Networks that achieve this goal. We present performance results of an implementation of our algorithm...
As we know, fast mobile IPv6 (FMIPV6), hierarchical mobile IPv6 (HMIPV6) and fast-hierarchical mobile IPv6 (F-HMIPv6) are enhancements to the standard mobile IPv6 (SMIPV6) protocol for reducing handover latency and data loss, and for localized mobility management. But, some problems still remain, bandwidth within a MAP region is not satisfying yet and lots of IP addresses in HMIPV6 and F-HMIPv6 scheme...
With the rapid growth of mobile Internet, offering seamless connectivity and high-speed multimedia services in different types of wireless networks are important features in next generation wireless networks (4G networks). Many researchers envision that the 4G networks will consist of many radio access technologies which integrate into all IP-based networks while providing seamless handoffs across...
Multi-homing is increasingly being employed by large enterprises to extract good performance and reliability from their connections. The integration of existing and emerging heterogeneous wireless networks requires the design of intelligent failure detection and recovery schemes to enable mobile users to switch between networks and experience uninterrupted service continuity anywhere, anytime. Real...
This paper deals with the packet reordering problem of the mobile stream control transmission protocol (mSCTP) for vertical handover in heterogeneous wireless networks, in which might occur due to the discrepancy of link bandwidth and transmission delay when MN switches its primary path into a new path with different characteristics such as link bandwidth and transmission delay. This packet reordering...
The basic DiffServ model lacks the mechanism to prevent itself from being overload; it does not have any capability to inform the edge nodes about the internal traffic load in the network. Thus, injecting more QoS sensitive traffic into the network will not only degrade the performance of the current flow but it will also degrade the performance of already established flows. In this research paper...
In this paper, we consider downward and upward vertical handovers in integrated wireless LAN and cellular networks and address wireless-profiled Transmission Control Protocol premature timeouts due to step increase of round-trip time (RTT) and false fast retransmit due to packet reordering. Specifically, we develop a mobile-receiver centric loosely coupled cross-layer design, which is easy to implement...
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