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Delay tolerant networks (DTNs) are a kind of wireless mobile network which may lack continuous network connectivity. Multicast supports the distribution of data to a group of users, a service needed for many potential DTNs applications. While multicasting in the Internet and mobile ad hoc networks has been studied extensively, due to the unique characteristic of frequent partitioning in DTNs, multicasting...
Delay tolerant networks (DTNs) are a special type of wireless mobile networks which may lack continuous network connectivity. Multicast is an important routing function that supports the distribution of data to a group of users, a service needed for many potential DTNs applications. While multicasting in the Internet and mobile ad hoc networks has been studied extensively, efficient multicasting in...
The effort dedicated to the ultimate goal of designing an architectural framework for tactical mobile ad hoc networks (MANETs) has long been hindered by the excessive control overhead of routing protocols to maintain a full view of the network topology. This paper explores the viability of adopting network coding as a means of improving reliable data delivery while lowering control overhead in large...
The Multicast Quality of Service (QoS) routing emphasizes to find a set of paths from a source node to a destination node set satisfying the QoS requirements. In this paper, we consider the two problems in Multicast QoS Routing called the MCM (Multi-Constrained Mutlicast Tree) and the MCOM (Multi-Constrained Optimal Multicast Tree). They are all NP-complete problems. We first formulate them as Quadratic...
The emergence of multimedia applications demands multicasting in MANETs. For such applications QoS provisioning is a complex and challenging issue. This paper proposes a QoS aware multicast routing scheme uses a set of static and mobile agents and ensures QoS guarantees in terms of bandwidth reservation, delay constraint, delay-jitter constraint and packet loss to multicast session. Here the mobile...
The paper proposed a structure measure of multicast tree using FPN( fuzzy Petri net) model with the concept of IRS(immediately reachable set) in MANET(Mobile Ad Hoc Networks). It allows structured representation of network topology, and improves the efficiency of the ad hoc network routing scheme. Therefore when a packet is to be multicast to a group by a multicast source, a heuristic algorithm is...
Most of the work on geocasting has been done for mobile ad-hoc networks and vehicular ad-hoc networks. This paper presents a novel Geocast technique with the hole detection in the geocast region for underwater environment. The proposed model named as Routing and Multicast Tree based Geocasting (RMTG) has been designed for underwater sensor networks. Here we propose a theoretical model for underwater...
In a wireless ad hoc network, an opportunistic routing strategy is a strategy where there is no predefined rule for choosing the next node to destination (as it is the case in conventional schemes such as OLSR, DSR or even Geo-Routing). Rather, an intermediate node en route acts in an impromptu fashion and takes a decision that is based solely on current circumstances. A popular example of opportunistic...
Multicast is important development of Ad hoc networks. But a route discovery is one of difficult problems of multicast routing protocol. Recently, many intelligent algorithms had been applied to find a route. Ant colony optimization routing algorithm (ACO) is typical one of them. However, ACO which is applied in the multicast has its limitation, which is the route to multiobjective can not be found...
A multicast routing algorithm is proposed with multiple constraints based on mobile agents. In this algorithm, source nodes utilize the information in node cache to create multicast trees with constraints on bandwidth and power. The QoS strategy extends the survival time of network. When links fail during data transmission, the algorithm will repair the original path locally rather than reroute the...
Applications for wireless sensor networks have grown enormously over the past few years. Routing and sink discovery protocols designed for ad hoc networks do not adapt to sensor networks, and generic sensor network routing techniques are not optimal for all scenarios. We propose a light weight routing protocol to discover mobile sinks in battle-field operations or large terrains. Initial experimentation...
In this paper, the problems facing designers of peer-to-peer instant messaging protocols, specifically those intended to run over mobile ad-hoc networks, are discussed. In particular, the challenges of identity management and presence dissemination are addressed, with an efficient and user-friendly protocol described that solves them. As a side effect, a form of social network mining is offered that...
A Mobile Ad hoc Network (MANET) can allow mobile nodes to setup a temporary network for instant communication without any fixed infrastructure. Mobile nodes dynamically exchange data/ information among themselves without any fixed base station. Many networking applications such as video conferencing, video-on-demand services, and distributed database replications require multicast communications....
Multicast application is one of key value-add field to cellular mobile network. Cooperative relay multicast network can be applied inside the cell of cellular system to improve performance of multicast sessions by adding relay nodes. This paper focuses on the optimization to relay nodes tree based on ant colony optimization (ACO). Besides cost and delay, power control is important to wireless relay...
In this position paper, we propose an agent based multicast routing scheme for mobile ad hoc networks (MANET) that builds a backbone in the form of reliable ring. The reliability of links is modeled by probabilistic measure of link failures to create reliable links and thus create multicast paths using reliable ring formed by these reliable links. The reliable ring is constructed by an agency that...
We study the multicast capacity for hybrid wireless networks consisting of ordinary wireless nodes and base stations under Gaussian channel model, which generalizes both the unicast capacity and broadcast capacity for hybrid wireless networks. We simply consider the hybrid extended network, where the ordinary wireless nodes are placed in the square region A(n) with side-length radicn according to...
Most of the routing protocols for mobile disruption-tolerant networks (DTNs), are designed to route data from a single source to a single destination. Many real-world applications, however, need to transfer data to a group of recipients rather than individuals. Proposed architectures for multicast communication in mobile DTNs rely on a global knowledge of multicast group memberships that makes them...
With the increasing demand for realtime multicast service in mobile wireless sensor networks (mWSN), it is needed to provide new rendezvous point (RP) selection schemes for mWSN. Due to the arbitrary node mobility in mWSN, where mobile nodes usually go beyond someone RPpsilas coverage, multicast algorithm requires not only end-to-end constrained latency, but also short RP-switch time and low routing...
As laptop computers begin to dominate the marketplace, wireless adapters with varying bandwidth and range capabilities are being developed by hardware vendors. To provide multihop communication between these computers, ad hoc mobile networking is receiving increasing research interest. This paper deals with the analysis of the transmission range effects on On-Demand Multicast Routing Protocol (ODMRP)...
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