Heterogeneous Wireless Network Management

Qadeer, Wajahat; Rosing, Tajana; Ankcorn, John; Krishnan, Venky; Micheli, G. De

doi:10.1007/978-3-540-28641-7_7

Cited by 19 publications

(21 citation statements)

References 13 publications

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“…The aim of the last simulation is twofold: to compare consumption of the network interfaces when accessing services where sustained data flows are exchanged, and to verify that our results are congruent with those found in the literature [6,7]. In this simulation, we make one of the handheld devices exchange large sets of data back and forth with the laptop computer, fully filling its bandwidth during half an hour.…”

Section: Measurements For Services Access With Sustained Transfersmentioning

confidence: 53%

“…Obviously, the WiFi interface also becomes the sole practical solution when the Bluetooth interface cannot cope with the required bandwidth any more. Validity of these results is reinforced by observing that congruent models of energy consumption have been described for WiFi and Bluetooth interfaces in [6] and [7]. Finally, both curves show that the GPRS interface, apart from being the interface with the most limited bandwidth, is also the most consuming interface, whatever the throughput is.…”

Section: Measurements For Services Access With Sustained Transfersmentioning

confidence: 66%

“…In particular, several studies of the power consumption of the Bluetooth and WiFi interfaces may be found in the literature [6] [7]. However, all these studies concern measurements done while transferring large files at a sustained rate, whereas SDPs are not based on this type of sustained exchange.…”

Section: Assessing Multi-radio Based Service Discovery With Respect Tmentioning

confidence: 99%

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Energy-efficient middleware-layer multi-radio networking: An assessment in the area of service discovery

2008

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The massive deployment of mobile networks together with the emergence of powerful portable devices has given rise to pervasive computing environments. In such environments, mobile users may discover and access services offered in surrounding networks using Service Discovery Protocols (SDPs). However, several SDPs are currently in use, each one designed for a specific target network architecture and setting. As a result, in today's multi-radio networking environment, SDPs do not equally suit each radio interface. In order to provide effective service discovery in multi-radio networks, the most resource-efficient radio interface should be chosen with respect to two main criteria: the adequacy of the interface against the SDP to be used, and energy saving, which is crucial for battery-powered devices. Toward this goal, this article assesses how to effectively take advantage of the multiple radio interfaces now embedded within wireless devices with respect to energy consumption, from the standpoint of service discovery and access. It further investigates the adequacy of legacy SDPs with the various networks, so as to classify the most appropriate networks for each SDP. Exploitation of these results is finally investigated with the description of an energy-efficient algorithm for SDP-based context sensing in a multi-radio pervasive environment.

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Section: Measurements For Services Access With Sustained Transfersmentioning

confidence: 53%

Section: Measurements For Services Access With Sustained Transfersmentioning

confidence: 66%

Section: Assessing Multi-radio Based Service Discovery With Respect Tmentioning

confidence: 99%

See 1 more Smart Citation

Energy-efficient middleware-layer multi-radio networking: An assessment in the area of service discovery

2008

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“…Power-friendly transformations to media streams delivered to a client, and proxy-assisted prediction of packet delivery have been presented in [36]. Recent work [23] focused on managing power and QoS on the client side for multiple WNICs without considering other clients in the environment.…”

Section: Related Workmentioning

confidence: 99%

“…It is a function of the energy tradeoff between communication and storage, as well as quality of service parameters [23]. If there is space in the schedule, the server transfers extra data to provide a cushion against variations in the system characteristics, Tnorm 5 the amount of time normally needed to transfer data, while Tworst is how long it takes to also transfer the data cushion, as shown in Equations 3 and 4.…”

Section: E Totalmentioning

confidence: 99%

<title>Managing heterogeneous wireless environments via Hotspot servers</title>

2005

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Wireless communication today supports heterogeneous wireless devices with a number of different wireless network interfaces (WNICs). A large fraction of communication is infrastructure based, so the wireless access points and hotspot servers have become more ubiquitous. Battery lifetime is still a critical issue, with WNICs typically consuming a large fraction of the overall power budget in a mobile device. In this work we present a new technique for managing power consumption and QoS in diverse wireless environments using Hotspot servers. We introduce a resource manager module at both Hotspot server and the client. Resource manager schedules communication bursts between it and each client. The schedulers decide what WNIC to employ for communication, when to communicate data and how to minimize power dissipation while maintaining an acceptable QoS based on the application needs. We present two new scheduling policies derived from well known earliest deadline first (EDF) and rate monotonic (RM) [26] algorithms. The resource manager and the schedulers have been implemented in the HP's Hotspot server [14]. Our measurement and simulation results show a significant improvement in power dissipation and QoS of Bluetooth and 802. 1 lb for applications such as MP3, MPEG4, WWW, and email.

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Simplified gateway selection scheme for multihop relay in vehicular ad hoc network

Alawi

Saeed

Hassan

et al. 2013

Int J Communication

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SUMMARYIntegrating vehicular ad hoc network (VANET) and universal mobile telecommunication system (UMTS) could be a promising architecture for future machine-to-machine applications. This integration can help vehicles have steady Internet connection through the UMTS network and in communicating with other vehicles. However, dead spot areas and unsuccessful handoff processes caused by the high speed of vehicles can disrupt the implementation of this kind of architecture. In this paper, a new simplified gateway selection (SGS) scheme for multihop relay in a VANET-UMTS integration network is proposed. The proposed scheme extends the coverage or/and calming of the frequent handoff process and allows vehicles to continue to be connected to the UMTS infrastructure network. An integrated simulation environment that combines VanetMobiSim and NS2 is used to simulate and evaluate the proposed scheme. The simulation results show that the SGS scheme performed better when it was implemented with ad hoc on a demand distance vector routing and destination-sequenced distance vector routing protocols. Furthermore, the SGS scheme is compared with other cluster-based gateway selections used in the previous works. The results show that our SGS scheme outperforms other cluster-based gateway selections scheme in terms of selection delay, control packet overhead, packet delivery ratio, and overall throughput.

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Heterogeneous Wireless Network Management

Cited by 19 publications

References 13 publications

Energy-efficient middleware-layer multi-radio networking: An assessment in the area of service discovery

Energy-efficient middleware-layer multi-radio networking: An assessment in the area of service discovery

<title>Managing heterogeneous wireless environments via Hotspot servers</title>

Simplified gateway selection scheme for multihop relay in vehicular ad hoc network

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