A two-cell-lookahead call admission and handoff management scheme for multimedia LEO satellite networks

Todorova, P.; Olariu, Stephan; Nguyen, Hoang Nam

doi:10.1109/hicss.2003.1174852

Cited by 9 publications

(14 citation statements)

References 16 publications

(21 reference statements)

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“…Another call admission and cell handover scheme tailored for multimedia LEO satellite systems was proposed in [28]. According to that scheme handover requests are stored in four different queues.…”

Section: Review Of Cac and Handover Schemesmentioning

confidence: 99%

QoS handover management for multimedia LEO satellite networks

Karapantazis

Pavlidou

2006

Telecommun Syst

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Low earth orbit (LEO) satellite systems gained considerable interest towards the end of the previous decade by virtue of some of the appealing features that are endowed with, such as low propagation delay and the ability to communicate with handheld terminals. However, after the limited commercial success of the first networks of this kind, future satellite networks are now conceived as complementary rather than competitive to terrestrial networks. In this paper, we focus on one of the most influential factors in system performance, that is, the handover of a call. First, we provide a succinct review of the handover strategies that have been proposed in the literature. Then we propose two different satellite handover techniques for broadband LEO satellite systems that capitalize upon the satellite diversity that a system may provide. The proposed schemes cater for multimedia traffic and are based on the queuing of handover requests. Moreover, a deallocation scheme is also proposed according to which capacity reservation requests are countermanded when the capacity that they strive to reserve is unlikely to be used. Simulation studies further document and confirm the positive characteristics of the proposed handover schemes.

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Section: Review Of Cac and Handover Schemesmentioning

confidence: 99%

QoS handover management for multimedia LEO satellite networks

Karapantazis

Pavlidou

2006

Telecommun Syst

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“…However, QoS requirements are not easily met, since requests (sent to the NCC) that represent the current needs for bandwidth are not always satisfied. In Reference [59], the authors proposed a novel predictive bandwidth allocation and de-allocation scheme, which frees up bandwidth allocated to connections that are unlikely to be used. A look-ahead horizon of k cells is introduced, where k=2.…”

Section: Dynamic Bandwidth Allocationmentioning

confidence: 99%

“…low Call Dropping Probability for handoff calls, acceptable Call Blocking Probability (CBP) for new call attempts, and high resource utilization. A handoff management technique, based on priority queues, which prioritizes handoff calls over new calls, has been widely studied in References [94][95][96][97][98] to improve the service quality of calls that are in progress. Further information can be found in References [99, 100] for other handoff techniques or considerations regarding this problem.…”

Section: The Handoffmentioning

confidence: 99%

Radio resource management across multiple protocol layers in satellite networks: a tutorial overview

Barsocchi

Celandroni

Davoli

et al. 2005

Satell Commun Network

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Satellite transmissions have an important role in telephone communications, television broadcasting, computer communications, maritime navigation, and military command and control. Moreover, in many situations they may be the only possible communication set-up. Trends in telecommunications indicate that four major growth market/service areas are messaging and navigation services (wireless and satellite), mobility services (wireless and satellite), video delivery services (cable and satellite), and interactive multimedia services (fibre/cable, satellite). When using geostationary satellites (GEO), the long propagation delay may have great impact, given the end-to-end delay user’s requirements of relevant applications; moreover, atmospheric conditions may seriously affect data transmission. Since satellite bandwidth is a relatively scarce resource compared to the terrestrial one (e.g. in optical transport networks), and the environment is harsher, resource management of the radio segment plays an important role in the system’s efficiency and economy. The radio resource\ud management (RMM) entity is responsible for the utilization of the air interface resources, and covers power control, handover, admission control, congestion control, bandwidth allocation, and packet scheduling. RRM functions are crucial for the best possible utilization of the capacity. RRM functions can\ud be implemented in different ways, thus having an impact on the overall system efficiency. This tutorial aims to provide an overview of satellite transmission aspects at various OSI layers, with emphasis on the MAC layer; some cross-layer solutions for bandwidth allocation are also indicated. Far from being an exhaustive survey (mainly due to the extensive nature of the subject), it offers the readers an extensive bibliography, which could be used for further research on specific aspects

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“…In this study we employ a two dimensional model according to which the satellite footprint is modelled as a rectangle. Two-dimensional models are frequently used in the literature ( [3], [4], [7], [8], [9], [10], [11]). According to the mobility model the satellite (i.e., the satellite footprints) is considered to move with a speed V sat .…”

Section: A System Model and Problem Descriptionmentioning

confidence: 99%

“…For users of class 2 no specific reservation mechanism is proposed, raising concerns about fairness. On the contrary, both the method for cell handovers proposed in [9] and the method for satellite handovers proposed in [10] reserve resources in the next cell/satellite when the handover occurs for both classes of users. Furthermore, the treatment of new connections is different (resources in the next cell/satellite are not required for the admission of a new connection) in order to reduce the cost of resource locking.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Handover Management for Multiservice NGSO Satellite Systems

Papapetrou

Todorova

Karapantazis

et al. 2007

2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications

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In this paper we propose a handover method for multiservice non-geo satellite systems. The proposed algorithm can be used for satellite handover as well as for cell handover when a fixed amount of resources is allocated to each cell. Specifically, we consider the case in which the satellite system provides services to users of differrent QoS requirements. The first type of users require the minimization and, if possible, the elimination of the probability of forcing a connection in progress to termination during a handover. On the other hand, the users of the second category do not have any specific handover requirements. The new method is evaluated through extensive simulations and is proved to meet the requirements of the first type of users while at the same time maximizes the system utilization for both types of users.

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A two-cell-lookahead call admission and handoff management scheme for multimedia LEO satellite networks

Cited by 9 publications

References 16 publications

QoS handover management for multimedia LEO satellite networks

QoS handover management for multimedia LEO satellite networks

Radio resource management across multiple protocol layers in satellite networks: a tutorial overview

Adaptive Handover Management for Multiservice NGSO Satellite Systems

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