SIP-based proactive and adaptive mobility management framework for heterogeneous networks

Yee, Y. C.; Choong, Khong Neng; Low, A.L.Y.; Tan, Su Wei

doi:10.1016/j.jnca.2007.09.002

Cited by 19 publications

(13 citation statements)

References 20 publications

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“…Even though lower-layer protocols involved in handoff are simplex, integration with various application layer protocols is not trivial. Even though an application layer handoff approach, proactive and adaptive handover system [4], was proposed using session initiation protocol (SIP) [5], some network and data link layer operations can be integrated, for example an IP address prefetching and link layer call admission.…”

Section: Introductionmentioning

confidence: 99%

Handoff optimization in 802.11 wireless networks

Hsieh

Kao

2011

J Wireless Com Network

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In 802.11 wireless networks, a complete handoff procedure for a mobile node requires access point (AP) selection, AP switch, call admission control (CAC), IP address re-allocation, and network re-configuration. Most current handoff schemes deal only with either AP selection or IP address re-allocation. In this paper, an integrated handoff procedure is proposed. First, AP selection is accomplished by choosing an AP with the lowest channel utilization and smaller number of associated users. The information about load of each AP is reported through modified beacon frames. In the case of adopting load-based AP selection, the average throughput can be increased up to 56%, as opposed to pure SNR-based AP selection. Next, both CAC and IP address pre-fetch are performed simultaneously through the simplified DHCP procedure. Specifically, efficient limited fractional guard channel policy (ELFGCP) is proposed for the CAC phase. By adopting ELFGCP, the failure probability can be reduced as much as 45% from conventional LFGCP. Finally, the simulation results demonstrate the applicability of the integrated approach, and the overall disconnection time due to handoff can be reduced from 2.9 to 0.004 s using traditional handoff procedures.

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Section: Introductionmentioning

confidence: 99%

Handoff optimization in 802.11 wireless networks

Hsieh

Kao

2011

J Wireless Com Network

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“…In [18], the authors proposed a network layer mechanism that adapts the QoS by the addition/deletion of media flows of a session upon terminal mobility. Many researchers [19,20] focus on the adaptive selection of application QoS parameters according to network conditions during heterogeneous network mobility. These schemes may not be readily applicable in a vehicular environment due to the highspeed, predictable directions, and obstacles in urban and suburban areas.…”

Section: Qos Management and Delay-sensitive Services In Vehicular Netmentioning

confidence: 99%

“…A cross-layer trigger-management framework was proposed in [19] to improve the QoS by providing network information to the resource management entity of the network. Y. C. Yee et al [20] proposed an adaptive codec switching scheme to improve the network QoS during mobility across heterogeneous networks. The recently developed encoding schemes such as H.264 provide high efficiency in terms of visual quality and bandwidth consumption compared to MPEG-4 in good channel conditions.…”

Section: Qos Management and Delay-sensitive Services In Vehicular Netmentioning

confidence: 99%

Quality of service and mobility aware in-vehicle telescreen service architecture

et al. 2017

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Original scientific paper This paper presents an architecture for providing quality of service (QoS) and mobility-aware telescreen services in vehicular networks, named "in-vehicle telescreen" (IVT). Providing seamless imagery effect is a key challenge in the distribution of high-resolution and delay-sensitive infotainment IVT services under mobile and varying network conditions. In the IVT architecture, new functions of information and service quality management are introduced to manage the user registrations, service advertisements, network information, and service quality. We propose an adaptive selection of application QoS parameters and an IVT handover decision mechanism for providing seamless imagery effect and enhance user's multimedia perception. The proposed architecture can provide a sustainable channel rate based selection of content source, media resolution, and codec to improve the perceived visual quality. Furthermore, the paper presents a Link Expiration Time and Received Signal Strength Indicator based IVT handover decision mechanism that can minimize the number of handovers by selecting a stable path. An extensive simulation is performed to show the effectiveness of the proposed mechanisms. Keywords: handover decision mechanism; in-vehicle telescreen; quality-of-experience; quality-of-service; vehicular networks Arhitektura kvalitete usluge i usluge tele-ekrana u pokretnim voznim mrežamaIzvorni znanstveni članak U radu se predstavljena arhitektura za osiguranje kvalitete usluge (quality of service -QoS) i usluge tele-ekrana u voznim mrežama koje reagiraju na pokretljivost, nazvane teleekran unutar vozila -"in-vehicle telescreen" (IVT). Osiguranje nepromjenljive slike je ključni izazov u pružanju IVT usluga visoke rezolucije u mobilnim uvjetima i uvjetima variranja mreže. U IVT arhitekturi uvode se nove funkcije upravljanja kvalitetom informacija i usluga u vođenju registracije korisnika, oglašavanju usluga, obavijesti o mreži, i kvaliteti usluge. Predlažemo prilagodljiv izbor QoS parametara te mehanizam za donošenje odluke o prekapčanju IVT kako bi se osigurala čista slika i poboljšala multimedijska percepcija korisnika. Predloženom se arhitekturom može osigurati izbor izvora sadržaja zasnovan na prosječnoj kanalskoj brzini, rezolucija medija i kodek (koder-dekoder) za poboljšanje postojane vizualne kvalitete. Nadalje, u radu se predstavlja mehanizam za donošenje odluke o prekapčanju IVT temeljen na pokazivaču vremena isticanja veze i pokazivaču snage primljenog signala koji može smanjiti broj prekapčanja izborom stabilne staze. Provedena je opsežna simulacija kako bi se pokazala učinkovitost predloženih mehanizama. Ključne riječi: mehanizam za donošenje odluke o prekapčanju; teleekran u vozilu; kvaliteta iskustva; kvaliteta usluge; vozne mreže

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“…MIH also lets decision methods to exploit its suitable provided services in use. A SIP‐based proactive and adaptive handover has been proposed by Yee and his co‐workers in Reference 34. This mobility management system is an application‐level approach that uses SIP to manage client‐initiated connection handoff across heterogeneous networks based on the IEEE 802.21 framework with designated user/configuration policy.…”

Section: Related Workmentioning

confidence: 99%

A context‐aware handover decision based on user perceived quality of service trigger

Ghahfarokhi¹,

Movahhedinia²

2011

Wireless Communications

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Growing demands for pervasive and ubiquitous services over wireless mobile networks and evolution of such networks towards heterogeneous solutions have emphasized the necessity of more intelligent handoff decisions. The existing handoff management methods in the literature are mostly using signal strength measurements and other link quality evaluations not addressing the knowledge about context of mobile devices, users and networks. Recently, context‐aware handoff management has been considered as a novel candidate for fourth generation (4G) wireless technology. In this paper, user perceived quality of service has been considered in addition to traditional contexts such as user preferences, application requirements, network parameters and link quality for decision making. User perceived quality (UPQ) has been employed as a trigger source, in addition to link layer triggers which are emerged using media independent handover (MIH) event service. This paper presents a policy based mechanism for handoff decision making where fuzzy petri nets (FPNs) have been utilized as its evaluation algorithm. A case study has been provided by simulations to show the usability and user level satisfaction. Simulation results show superior performance in terms of UPQ, jitter and packet delivery measures. Copyright © 2009 John Wiley & Sons, Ltd.

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SIP-based proactive and adaptive mobility management framework for heterogeneous networks

Cited by 19 publications

References 20 publications

Handoff optimization in 802.11 wireless networks

Handoff optimization in 802.11 wireless networks

Quality of service and mobility aware in-vehicle telescreen service architecture

A context‐aware handover decision based on user perceived quality of service trigger

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