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Stable and reliable communication is essential in disaster scenarios. Mobile Ad hoc Networks (MANETs) provide a network that is fast to setup and that works independently of possibly damaged infrastructure. This is important during disaster rescue and recovery missions. But single isolated MANETs are able to cover only a limited area. Therefore, it is necessary to interconnect these individual networks...
Service discovery in vehicular networks has been extensively investigated in literature. Collecting and disseminating data in high mobility networks in a reliable and efficient way without exhausting network bandwidth is still challenging, due to unreliable channel access in broadcast scenarios and thus results in loss of time through resending packets. Sending delta information to reduce network...
MANET (Mobile Ad Hoc Networks) is turning to be the recommended way to interconnect mobile nodes (MNs) to Internet when they move away from networks structures. The Mobile IP agents used to permit MNs IP mobility may announce their presence either using a proactive or a reactive discovery approach, but when MNs handover between different MANET sub-networks, ongoing communications may become interrupted...
Reliable and secure content distribution in a disruptive environment is a critical challenge due to high mobile and lossy channels. Traditional IP networking and wireless protocols tend to perform poorly. In this paper, we propose Content Centric Networking (CCN) for emergency wireless ad hoc environments. CCN is a novel communication architecture capable to access and retrieve content by name. This...
The possibility of connecting vehicles to fixed IP networks through roadside units (RSUs) or even access gateways is seen as a very interesting alternative to fully infrastructure-less VANETs. However, getting access to those fixed networks must be controlled and only authorized users should be able to use those RSUs or gateways. However, that authentication process incurs in a not-negligible delay...
As MANET has characteristics like multi-hop wireless connection, dynamic topology, and limited bandwidth, its routing protocol faces great challenges. This paper briefly introduces the concept and characteristics of MANET. It puts an emphasis on the key technologies (wireless resource management technology, space interface theory technology, routing technology, Internet access technology, address...
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...
As wireless IP-based networks become more popular and larger in size and coverage, simple mobility management protocols cannot deal with the demands. With the growing access to the Internet, mobility can be divided into macro/micro-mobility domains. Macro-mobility can be efficiently handled with Mobile IP and its derivatives but they do not scale that well for the micro-mobility case. An alternative...
A mobile device in a MANET must be allocated a free address before it may participate in unicast communication. Current solutions have different drawbacks. This paper proposes a novel address auto-configuration that works with global connected MANET. The proposed scheme may be applied to large scale MANETs with low complexity and low communication overhead. It supports frequent network partitioning...
This paper proposes a communication model which utilizes Anycast technology to perform the seamless communication between Ad Hoc network and IPv6 network. This model creates a new kind of IPv6 address auto-configuration scheme which does not needs detection of address duplication. In addition, in this model when a mobile node switches between different sub-nets it does not need to register its care-of...
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...
The communication between wireless ad-hoc networks and infrastructure-based networks is essential to extend Internet beyond its traditional scope, to remote inaccessible areas, making Web services in ad-hoc networks available anytime, anywhere. The mobile nodes in a wireless ad-hoc network must be able to detect available gateways and select one of them if they want to have Internet access. In this...
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...
The NEMO basic support protocol is a home agent based technique (derived from mobile IPv6) that permits the mobility of a network of IPv6 devices to be supported through the use of a dedicated mobile router. This NEMO mobile router accepts connections from IPv6 nodes and transparently manages any IP mobility on their behalf, which means that as well as individual hosts, a NEMO mobile router can also...
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...
Wireless mesh network is a new broad bandwidth distributing wireless access network system. It can access Internet through gateway nodes. When network load of access is heavy or network size is expanding, one gateway node will become a bottleneck of the access network because of the serious congestion of a large number of data packets transmitted to the gateway node. Based on the research of DSR (dynamic...
Nodes in vehicular mobile networks can resolve Internet Protocol (IP) addresses by using the new technologies associated with IP-based next generation wireless networks. Vehicles are often equipped with a global positioning system (GPS) which signals to them their position. Communication protocols based on IP addressing have proved their reliability in wireline networks; geographical ad hoc routing...
Recently, wireless mesh networks (WMNs) have attracted attention as a way to provide alternative Internet connectivity to rural areas or communities. In WMNs, wireless access points communicate with each other wirelessly, forming a true wireless mesh based access network of mesh relay nodes (MRNs). A major problem is, however, scalability of WMNs as well as MAC and PHY layer overhead for packet transmission...
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