Improving Connectivity of Nodes in Mobile WSN

Sajadian, Samar; Ibrahim, Alia; Freitas, Edison Pignaton de; Larsson, Tony

doi:10.1109/aina.2011.81

Cited by 5 publications

(2 citation statements)

References 10 publications

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“…Alternately, if relaying MAV data over a stationary multihop mesh network, nodes in the network are required to be always on – when not transmitting, each node must keep its radio in receive mode to ensure that data from the mobile node will be received by a node in the mesh [8,9]. The need to keep nodes listening for incoming packets places a severe burden on the stationary mesh’s energy budget; such persistent power consumption requires bigger, heavier batteries on each node.…”

Section: Introductionmentioning

confidence: 99%

TDMA-Based Dual-Mode Communication for Mobile Wireless Sensor Networks

Mehta

Kerkez

Glaser

et al. 2012

Sensors

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Small highly mobile robots, and in particular micro air vehicles (MAVs), are well suited to the task of exploring unknown indoor environments such as buildings and caves. Such a task imposes a number of requirements on the underlying communication infrastructure, with differing goals during various stages of the mission. This work addresses those requirements with a hybrid communications infrastructure consisting of a stationary mesh network along with the mobile nodes. The combined network operates in two independent modes, coupling a highly efficient, low duty cycle, low throughput mode for routing and persistent sensing with a burst mode for high data rate communication. By strategically distributing available frequency channels between the mobile agents and the stationary nodes, the overall network provides reliable long-term communication paths while maximizing data throughput when needed.

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Section: Introductionmentioning

confidence: 99%

TDMA-Based Dual-Mode Communication for Mobile Wireless Sensor Networks

Mehta

Kerkez

Glaser

et al. 2012

Sensors

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“…In [4], a limited number of relays were placed in a wireless sensor network federation to maximize network connectivity. However, there are few connectivity optimization solutions for femtocell networks to date, and the need for integration into the D2D LTE-Advanced networks increases motivation to develop better ones [5], [6]. The selection of access control mechanisms for such a network has dramatic effects on the performance of the overall system [7], [8].…”

Section: Introductionmentioning

confidence: 99%

Network Connectivity Optimization for Device-to-Device Wireless System with Femto Cells

Gowtham¹

2017

IJRASET

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The demand for high data rate transmission has triggered the design and development of advanced cellular networks, such as 4th generation long term evolution (LTE) networks. However, their poor coverage and relatively high interference can significantly impair data transmission. Femtocell and device-to-device (D2D) communication are promising solutions that have recently gathered interest. Operating in the licensed spectrum, femtocells provide users with higher capacity and coverage than their earlier designs, and they will be offered by cellular operators to enable high-data-rate local services in future LTE Advanced networks. As an underlay to the cellular networks, D2D communication enables nearby devices to communicate directly with each other by reusing cellular resources, which reduces interference in the cellular network compared with communication through base stations. However, the tight integration of femtocells and D2D communication creates a challenge for existing network design and is less studied in the literature. In this paper, we propose an open-access algorithm for femtocell base stations in D2D LTE-Advanced networks, in order to optimize network connectivity. Additionally, a greedy algorithm is proposed to balance macrocell base stations and femtocell base stations to maximize network connectivity. The simulation results demonstrate the effectiveness of the proposed. Keywords: I.INTRODUCTION The ever-increasing demand of user equipment (UE) and applications in cellular networks for higher data rate transmission has triggered design of new advanced cellular networks such as the 4th generation (4G) long term evolution (LTE) network. Studies show that more than 50% of voice calls and 70% of data traffic originate indoors [1]. The mobile operator faces challenges in providing in-building coverage due to poor indoor radio signal penetration and possibly crowded indoor environments such as shopping malls. In the LTE-Advanced networks, the femtocell approach is a potential solution to support higher data rate and reliable services to the subscribers, while allowing the operator to reduce data traffic on the expensive macrocell networks [1]. Femtocells can be employed as short-range, low-cost, and low-power base stations for providing cellular service within the home and enterprise environments [2]. On the other hand, to better support higher data rate local services, the cellular operator can integrate device-to-device (D2D) communication in future 4G LTE-Advanced cellular networks as an underlay. The D2D network is built by D2D UEs that do not communicate with each other via the base station (BS), which is called evolved NodeB (eNB) in the LTE architecture. In D2D networks, UEs instead communicate directly over one or more hops [3]. Enabling a D2D communication mode in cellular networks can improve system performance through better reuse of radio resources and reduced congestion when several UEs located in the same area want to communicate with each other [3]. The tight integration of femt...

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