A time‐based reservation scheme for managing handovers in satellite systems

Boukhatem, Lila; Gaïti, Dominique; Pujolle, Guy

doi:10.1002/nem.467

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…Considering deterministic and constant satellite movement [11], TCRA can evaluate the expected crossing time of the user in the next candidate cell from the current one. This time interval is used to reserve a channel in the next cell which will be used during handover [26] [27] [28]. TCRA is a variation of ECL (Sec.…”

Section: B Classification Based On Handover Guaranteementioning

confidence: 99%

Handover schemes in satellite networks: state-of-the-art and future research directions

Chowdhury¹,

Atiquzzaman²,

Ivancic³

2006

IEEE Commun. Surv. Tutorials

127

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Abstract-Low Earth Orbit (LEO) satellites will work as an important component in future data communication networks. LEO satellites provide low end-to-end delays and efficient frequency spectrum utilization, making it suitable for personal communication. However, due to high satellite speed, the ongoing communication using LEO constellations experiences frequent handover. In this paper, we provide an up-to-date comprehensive literature survey on proposed handover schemes for LEO satellite systems. We also present a detailed classification of handover schemes based on a common framework. We first classify the schemes into link layer and network layer handover schemes. Link layer handover schemes are further classified into three categories: (a) spotbeam handover schemes, (b) satellite handover schemes, and (c) ISL handover schemes. Spotbeam handover schemes are categorized based on channel capacity, handover guarantee, and handover prioritization techniques. Network layer handover schemes are also classified depending on connection transfer strategies. Finally, we compare the handover schemes using different Quality of Service.

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Section: B Classification Based On Handover Guaranteementioning

confidence: 99%

Handover schemes in satellite networks: state-of-the-art and future research directions

Chowdhury¹,

Atiquzzaman²,

Ivancic³

2006

IEEE Commun. Surv. Tutorials

127

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“…Also [4] proposes time based channel reservation by reserving channel in next targeting spotbeam to improve handover performance.…”

Section: Introductionmentioning

confidence: 99%

Proactive TCP Mechanism to Improve Handover Performance in Mobile Satellite and Terrestrial Networks

Vinayakray-Jani¹,

Sanyal²

2012

IJCA

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Emerging standardization of Geo Mobile Radio (GMR-1) for satellite system is having strong resemblance to terrestrial GSM (Global System for Mobile communications) at the upper protocol layers and TCP (Transmission Control Protocol) is one of them. This space segment technology as well as terrestrial technology, is characterized by periodic variations in communication properties and coverage causing the termination of ongoing call as connections of Mobile Nodes (MN) alter stochastically. Although provisions are made to provide efficient communication infrastructure this hybrid space and terrestrial networks must ensure the end-to-end network performance so that MN can move seamlessly among these networks. However from connectivity point of view current TCP performance has not been engineered for mobility events in multi-radio MN. Traditionally, TCP has applied a set of congestion control algorithms (slow-start, congestion avoidance, fast retransmit, fast recovery) to probe the currently available bandwidth on the connection path. These algorithms need several round-trip times to find the correct transmission rate (i.e., congestion window), and adapt to sudden changes connectivity due to handover. While there are protocols to maintain the connection continuity on mobility events, such as Mobile IP (MIP) and Host Identity Protocol (HIP), TCP performance engineering has had less attention. TCP is implemented as a separate component in an operating system, and is therefore often unaware of the mobility events or the nature of multi-radios' communication. This paper aims to improve TCP communication performance in Mobile satellite and terrestrial networks.

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“…TCRA based Handover Scheme: Boukhatem et al [2] proposed a Time based Channel Reservation Algorithm (TCRA) to improve GH performance and resource utilization. TCRA locks a channel in the next candidate cell with the cell movement.…”

Section: Elastic Handover Schemementioning

confidence: 99%