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In this paper, we study the energy consumption in heterogeneous networks (HetNets). HetNets are known to be one of the main characteristics of the future 5G networks. In this work we aim to minimize the global energy consumed within these networks by adapting the network density to the operating traffic load. We formulate this problem by expressing the energy gain (i.e., the energy saved) which should...
Mobile Ad hoc Networks (MANETs) is a collection of self organized mobile nodes that can communicate with each other without the need of pre-deployed infrastructure. Each mobile node acts as a router and forward packets for the other nodes in order to achieve the multi-hop communication between the nodes. A mobile node misbehave (selfish) due to its scarcely available resources and decide not to forward...
On a mobile ad-hoc network environment, where the resources are scarce, the knowledge about the network's link state is essential to optimize the routing procedures. This paper presents a study about different pheromone evaluation models and how they react to possible changes in traffic rate. Observing how the pheromone value on a link changes, it could be possible to identify certain patterns which...
One of the basic problems in maritime tactical networks is how to maximize the quality of service (QoS) achieved by critical traffic while dealing with mobile and limited-capacity links. This paper describes an evaluation of the resource reservation service (RRS), a distributed admission control protocol designed to guarantee end-to-end bandwidth for critical traffic in the maritime environment. The...
A principal factor in sensor network design is energy efficiency. In this work, we propose to extend the lifetime of sensor networks using appropriate choice of sensor node distribution. The key idea of our scheme is to deploy more nodes in areas of extensive energy usage. Using this scheme of sensor node distribution, we use probabilistic angular routing to route data packets from the sensor nodes...
In this paper, we address the issue of transmission power control (TPC) in wireless ad hoc networks. Power control plays an important role in energy saving and network performance enhancement. However, the existing TPC schemes either face the problem of hidden and exposed terminal or have additional hardware requirements. We propose a novel distributed power control protocol, called Receiver Initiated...
In this paper, we propose an adaptive pacing scheme at the link layer for IEEE 802.11 based multihop wireless networks. Our objective is to improve the performance of higher layer protocols without any modifications to them. Our adaptive pacing scheme estimates the four-hop transmission delay in the network path without incurring any additional overheads, and accordingly paces the packets to reduce...
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