A game-theoretic model is proposed to study the cross-layer problem of joint power and rate control with quality of service (QoS) constraints in multiple-access networks. In the proposed game, each user seeks to choose its transmit power and rate in a ...

Mobile ad hoc networks (MANETs), enabling multi-hop communication between mobile nodes, are characterized by variable network topology and the demand for efficient dynamic routing protocols. MANETs need no stationary infrastructure or preconstructed ...

Positioning sensor nodes requires distance information to reference points. Due to resource limitations in sensor networks, distance determination in low-cost sensor nodes without additional hardware is difficult. Known techniques such as distance ...

Grid-based sensor deployment is an effective and efficient practice for provisioning wireless sensor networks. Previous work has addressed grid-based deployment of sensors in order to guarantee sensing coverage under the assumption that each device can ...

We propose ι a novel index for evaluation of point-distribution. ι is the minimum distance between each pair of points normalized by the average distance between each pair of points. We find that a set of points that achieve a maximum value of ι result ...

In this paper, we present a leader election protocol that works under frequent network changes and node mobility. Our proposed protocol, which operates well in ad hoc networks, is based on electing a unique node that outperforms all the other nodes in a ...

Nowadays, large storage is becoming an important feature of mobile embedded systems as their media functions are getting increasingly powerful and popular. However, no low power cost memory can provide sufficient capacity at low cost. And much higher ...

Introducing heterogeneous mobile devices, such as mobile phones into the large scale sparse wireless sensor networks is a promising research direction. These devices acting as mobile sinks offer many benefits to the network. For instance, they help to ...

Energy is one of the most precious resources for wireless sensor networks. Dynamic power management (DPM) is an efficient technique to reduce the energy consumption and increase the lifetime of wireless sensor networks. DPM for the event-driven ...

The network layer operations in ad hoc networks - namely packet routing and forwarding - are solely performed by the nodes themselves and consequently rely on the cooperation among them. In such networks, to best manage packet forwarding to the aimed ...

We investigate connection-level and packet-level quality-of-service (QoS) performances in a solar-powered wireless mesh network when a connection admission control (CAC) mechanism is used at each mesh node. A queueing analytical model is developed to ...

Sensor devices are being embedded in all sorts of items including vehicles, furniture but also animal and human bodies through health monitors and tagging techniques. The collection of the information generated by these devices is a challenging task as ...

This paper presents a load-based transmission scheduling (LoBaTS) protocol for wireless ad hoc networks. Since terminals in these networks may be required to forward unequal amounts of traffic, a transmission scheduling protocol which assigns equal ...