Mobility management for multi-user sessions in next generation wireless systems

Cerqueira, Eduardo; Veloso, Luis; Neto, Augusto; Curado, Marília; Monteiro, Edmundo; Mendes, Paulo

doi:10.1016/j.comcom.2007.12.019

Cited by 8 publications

(3 citation statements)

References 39 publications

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“…The multicast service provides a one-to-many or manyto-many communication to reduce the overall core network load. The multicast schemes can be application layer multicast [25,26], IP-layer multicast [27], and link layer multicast [28]. In the multicast environment, a user may have different channel conditions that arise due to interference, fading, obstacles, and distance from the base station.…”

Section: Background and Related Workmentioning

confidence: 99%

“…QoS is a measure of service availability and transmission quality of a network. QoS management schemes focus on application layer [33], network layer [28], and MAC layer [34] mechanisms to adapt the session to network conditions. These schemes require accurate information of the network QoS parameters such as ABW, packet loss ratio (PLR), jitters, and average packet delay.…”

Section: Background and Related Workmentioning

confidence: 99%

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QoS and QoE Aware N-Screen Multicast Service

Sarwar¹,

Ullah²,

Lee

2016

Journal of Sensors

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The paper focuses on ensuring the quality-of-service (QoS) and quality-of-experience (QoE) requirements of users having heterogeneous devices in a multicast session. QoS parameters such as bit rate, delays, and packet losses are good indicators for optimizing network services but fall short in characterizing user perception (QoE). In N-Screen service, the users have different devices with heterogeneous attributes like screen size, resolution, and access network interface, and the users have different QoE on N-Screen devices with the same QoS parameters. We formulate the objective function of the N-Screen multicast grouping to ensure the minimum user’s QoE with smaller bandwidth requirement. We propose a dynamic user reassignment scheme to maintain and satisfy the QoE by adapting the user’s membership to the varying network conditions. The proposed schemes combine the available bandwidth and multimedia visual quality to ensure the QoS and QoE. In the network architecture, we introduce the functions of the QoS and QoE aware multicast group management and the estimation schemes for the QoS and QoE parameters. The simulation results show that the proposed multicast service ensures the network QoS and guarantees the QoE of users in the varying network conditions.

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Section: Background and Related Workmentioning

confidence: 99%

Section: Background and Related Workmentioning

confidence: 99%

QoS and QoE Aware N-Screen Multicast Service

Sarwar¹,

Ullah²,

Lee

2016

Journal of Sensors

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show abstract

“…The MAC layer procedures consider the wireless channel conditions to adapt the QoS but cannot accommodate the effect of wired network congestion on the QoS and user QoE. 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.…”

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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Multimedia Session Reconfiguration for Mobility-Aware QoS Management: Use Cases and the Functional Model

Dobrijević

Matijašević

2011

Intelligent Interactive Multimedia Systems and Services

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Mobility management for multi-user sessions in next generation wireless systems

Cited by 8 publications

References 39 publications

QoS and QoE Aware N-Screen Multicast Service

QoS and QoE Aware N-Screen Multicast Service

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

Multimedia Session Reconfiguration for Mobility-Aware QoS Management: Use Cases and the Functional Model

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