Quality of Service Aspects of Transport Technologies for the UMTS Radio Access Network

Koraitim, H.; Schäfer, Günter; Tohmé, Samir

doi:10.1007/978-0-387-35526-9_5

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…This case is found in two typical situations. The first corresponds to a constellation without Inter-Satellite Link ISL like SKYBRIDGE and the second is found in the case of integration of the satellite within the Universal Mobile Telecommunications Service UMTS Satellite Radio Access Network USRAN [4]. A CAC policy based on an "enhanced trunk reservation technique" is used.…”

Section: Introductionmentioning

confidence: 99%

Connection Admission Control CAC and Differentiated Resources Allocation RA in a Low Earth Orbit LEO Satellite Constellation

Fadel

Tohmé

2002

NETWORKING 2002: Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile A

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The Up/Down Link UDL of a Low Earth Orbit LEO satellite constellation is a scarce radio resource that needs to be shared efficiently between many users with different needs. A suitable Connection Admission Control CAC policy is required. In our study we assume that the network handles three types of calls: real time (voice) calls with strict constraints over the delay and the bandwidth, non real time (data) calls delay tolerant but with bandwidth guarantees requirements and Best Effort calls with no guarantees requirements. In order to ensure priorities are respected, we use an "enhanced trunk reservation policy" in order to derive the Resources Allocation RA. A differentiated RA scheme is proposed, associated with queuing for the lower priority calls. Different unity bandwidths are associated with calls depending on their requirements. The analytical markovian model is first derived, then the differentiated RA model is compared with two cases of bandwidth granularity choice. Impact of non markovian laws is studied using simulation.

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Section: Introductionmentioning

confidence: 99%

Connection Admission Control CAC and Differentiated Resources Allocation RA in a Low Earth Orbit LEO Satellite Constellation

Fadel

Tohmé

2002

NETWORKING 2002: Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile A

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“…In this work, the satellite segment will replace the terrestrial node B and will serve a big number of users at the same time. All functions usually supported by terrestrial Node B (multiplexing, coding...) should then be supported by the satellite [4].…”

Section: Introductionmentioning

confidence: 99%

USRAN Capacity Study and Dimensioning

Zangar

Abdennebi²,

Tabbane³

et al.

2006 2nd International Conference on Information &Amp; Communication Technologies

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In order to achieve global roaming of UMTS users, the satellite segment is integrated in the UMTS terrestrial radio access network and it replaces a terrestrial Node B. As the satellite capacity to support a big number of users at the same time is high, terrestrial RNC will just support one satellite/Node B instead of several terrestrial Node B, meaning a gain in coverage. Our proposal is to study the capacity of USRAN (UMTS Satellite Radio Access Network) for mixed traffics sent over satellite channel in order to achieve dimensioning that can be usedfor call admission control. The interest of such a study is to give the possibility of USRAN dimensioning, i.e., to determine the capacity neededfor a number offlows given by the operator. In this paper we describe the network architecture for satellite integration with UMTS Terrestrial Radio Access Network. Performance analysis and testing were donefor voice traffics represented by an ONIOFF source model as well asfor data transfer application.

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“…Mobile Telecommunications System UMTS within the UMTS Satellite Radio Access Network USRAN [3]. We will use a "trunk reservation technique" which allows the rejection of a call as soon as the occupation of the resources goes beyond a certain threshold.…”

mentioning

confidence: 99%

Connection admission control (CAC) and resources allocation (RA) on the up/down link (UDL) in a low Earth orbit (LEO) satellite constellation

Fadel

Tohmé²

Proceedings. Sixth IEEE Symposium on Computers and Communications

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study a multi-service Connection CAC policy and we derive the corresponding Resources Allocation RA mechanism to access the Up/Down Link UDL in a Low Earth Orbit LEO satellite constellation used as an access network to a mobile terrestrial network. We propose the usage of a trunk reservation policy for bandwidth reservation that allows the network to root the call on the satellite where the blocking probability is minimum. In our study, we assume that the network handles three types of call: real time voice calls, non real time data calls with guaranteed bandwidth and non real time elastic data calls. A Markovian modelling approach is used to analyse the bandwidth occupation and derive the analytical model for the RA scheme.

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Quality of Service Aspects of Transport Technologies for the UMTS Radio Access Network

Cited by 6 publications

References 5 publications

Connection Admission Control CAC and Differentiated Resources Allocation RA in a Low Earth Orbit LEO Satellite Constellation

Connection Admission Control CAC and Differentiated Resources Allocation RA in a Low Earth Orbit LEO Satellite Constellation

USRAN Capacity Study and Dimensioning

Connection admission control (CAC) and resources allocation (RA) on the up/down link (UDL) in a low Earth orbit (LEO) satellite constellation

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