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Low-power personal area networks (LoWPANs) are still in its early stage of development, but the range of conceivable usage scenarios is tremendous. The numerous possible applications of Wireless Sensor Networks (WSNs) make obvious that mesh and multi-technology topologies will be prevalent in LoWPAN environments and mobility support will be a necessity. Mobility based communication can prolong the...
In this paper, we proposed a three-layer dynamic gateway strategy, which integrates mobile IP and AODV protocol. This is one kind of multi-gateway mechanisms. By using irregular nodes not attached fixed gateway as gateway in Ad Hoc network, network overload will decreased. And the efficiency of the network will increased. According to the distance, the registered number of nodes and traffic-weighted...
In this paper, we present a solution of dynamic Ad-Hoc gateway to meet the urgent needs of interconnecting MANET to Internet. Comparing with the common fixed gateways, we integrate AODV with Mobile IP, eliminate the broadcast of Mobile IP by carrying the information in existing AODV messages so improve the performance remarkably. In this paper, we give the system's architecture design and its functional...
In this paper, we modify OLSR for MANET nodes to achieve full connection to Internet through multiple mobile gateways. We present a proactive mobile IP approach using Hello message and TC message to maintain the MANET nodes movement. The mobile gateway multiple metrics selection algorithm can select the best one among the active multiple mobile gateways. The simulation result shows that our approach...
This paper proposes a communication model of implementing an Anycast service in an Ad Hoc network which is connected to IPv6 networks where IPv6 nodes can obtain an Anycast service provided by the Ad hoc network. In this model when an Anycast mobile member in an Ad hoc network moves it can keep the existing communications with its corresponding nodes to continue providing the Anycast service with...
This study researched on performance increment using gateway FA to reduce delay factor of smooth handoff to the maximum level in mobile IP supporting mobility of IP address in PDA and laptop. In this study analyses of transmission delay and throughput on the performance of previous methods were carried out using NS-2 and performance of all FA buffer and gateway FA also was measured to identify the...
The major area of interest in networking is to connect the user of mobile devices to the Internet. These mobile devices are connected to the foreign networks in the Internet will expect or requires the same functionality when they are connected to the home network. The ad hoc networks provide connectivity between the mobile hosts and access points without backbone infrastructure. The network mobility...
The success of next generation wireless networks will rely much on advanced mechanisms for seamless mobility support among emerging heterogeneous technologies. Currently, mobile IP is the most promising solution for mobility management in the Internet. Several IP micro mobility approaches have been proposed to enhance the performance of mobile IP which supports quality of service, minimum packet loss,...
In this paper, we modify AODV for MANET nodes to achieve full connection to Internet through multiple mobile gateways. We present a conditional hybrid mobile IP approach to maintain the MANET nodes movement. The mobile gateway selection algorithm can balance the Internet payload among the active multiple mobile gateways. The simulation result shows that our approach achieves excellent connectivity...
Among the research community, on-going efforts are being continued to efficiently interconnect MANETs to fixed infrastructure in order to expand the reach of the Internet to Wireless access networks. Such scenario gives raise to a number of challenges that require solutions involving Internet gateway selection scheme, extensions to ad hoc routing technique. In this paper, we depict a network architecture...
Connecting the wired and wireless networks particularly the Mobile ad hoc Network is interesting in real world situations due to its usefulness and practicality. Different mechanisms have been proposed to integrate MANETs and the Internet. These strategies differ in gateway discovery mechanism, cell switching criteria, ad hoc routing protocol.In this paper, Mobile-IP is integrated with Hierarchical...
In the new area of heterogeneous environments, roaming users, using multi-interface mobile terminals, need to access to services anytime and anywhere. For that, a seamless vertical handover has to be considered. In our paper, we propose a 3G/UMTS-WLAN loosely-coupled interworking architecture with mobile IP as a service continuity solution. We focus on a mobile-controlled vertical handover management...
Mobile IP ensures the seamless IP connectivity while roaming but it also introduce deficiencies in terms of processing overhead. Proxy mobile IP (PMIP) has been proposed to solve the challenge of IP mobility. Network-based mobility support removes the involvement of mobile node (MN) by introducing new mobility entities, local management anchor (LMA) and mobility access gateway (MAG). This paper presents...
Over the years, the usefulness of wireless mobile ad hoc networks has been well documented. In the recent times, a lot of effort has gone into the study of the integration of mobile ad hoc networks and the Internet. This paper discusses the challenges of connecting mobile ad hoc networks to the Internet. Next, it reviews the characteristics of ten proposed solutions with their relative merits and...
Many today TCP modules are derived from the BSD implementation which handles packet loss as signal of congestion. While in the wireless networks, the non-congestive packet losses can be frequent and shall be handled differently. In this paper we apply the visualized IP-based network simulator (VINS) to study the differences between packet losses due to congestion and that due to link disruption, and...
One of the most critical aspects in mobility management is handoff. Handoff is a complex process involving location identification, performance evaluation of available networks at that location, decision to switch to a different network and actions to effect the switching. During the process of handoff, the communication channel between the mobile host and a corresponding host may be broken, and this...
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