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The multi-hop clustering algorithms like Max-Min heuristic improve the scalability of mobile ad hoc networks compared to single-hop clustering algorithms. However, few papers focus on maintaining the stabilities of the multi-hop clusters. And multi-hop clusters without maintenance are prone to disruption due to mobility and large size against routing performance. We propose a k-hop cluster maintaining...
In mobile ad hoc networks (MANETs) where there exist multiple Internet gateways, performing load balancing among available gateways is vital in order to take full advantage of the network capacity and improve the performance. However, performing load balancing in a wireless environment is very challenging due to the inherently interfering and unreliable nature that characterize wireless communication...
Wireless Mesh Networks aim to provide high-bandwidth broadband connections to a large community and thus, should be able to accommodate a large number of users accessing the Internet. Due to high estimated traffic volume in Wireless Mesh Networks, scalability and fault tolerance become important requirements in algorithm design. We propose a Failure Recovery Mechanism (FRM) for the channel assignment...
The advancements of diverse radio technologies and emerging applications have spawned increasing heterogeneity in mobile ad hoc networks (MANETs). But the collaborative nature of communications and operations often requires that these heterogeneous MANETs to be interoperable. Nonetheless, the existing interconnection protocols designed for the Internet (namely inter-domain routing protocol such as...
In recent work it has been shown that the use of virtual coordinates or identifiers for efficient routing and data management has several advantages compared to the use of predefined addresses or geographical coordinates. However, these advantages only hold for single domain networks with limited mobility. In this paper, we discuss the challenges arising from using virtual coordinates for routing...
The challenging problem in geocasting is distributing the packets to all the nodes within the geocast region with high probability. Sending packets to a node in the geocast region cannot guarantee delivery to all nodes in the region. It is because there may be some islands in which nodes are not connected each other within the region while they may reach through outside the region. Some geocast algorithms...
Evaluating routing protocols is one of the better methods to study mobile ad hoc networks. Many related works simulate the classical flat protocols such as AODV, DSDV and DSR etc. However, to our knowledge, there are few works which simulates cluster or hierarchical routing protocols. We firstly introduce the cluster routing protocols in ad hoc networks. Secondly, because of no cluster routing protocols...
In this paper, we present our design and implementation of load-balanced gateway discovery routing protocol called LBGD-AODV. A gateway node in a wireless mesh network acts as bridge between mesh routers and external network in order to provide services such as broadband. We observed in our SwanMesh testbed that a single gateway can only serve up to a limited number of hops due to noticeable throughput...
Topology control in ad-hoc networks tries to lower node energy consumption by reducing transmission power and by confining interference, collisions and consequently retransmissions. In other words, we are given the communication graph G obtained when all the nodes transmit at maximum power, the goal is to identify a sparse subgraph G (also called power spanner) of G such that only energy-efficient...
Mobile ad-hoc network (MANET) is a type of communication network which is used for data communication between a group of mobile nodes using wireless channels. Clustering has evolved as an important research topic in MANETs as it improves the system performance of large MANETs. Clustering is a process that divides the network into interconnected substructures, called clusters. Each cluster has a cluster...
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