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On the impact of mobility in cellular networks

Anton, Elene and Ayesta, Urtzi and Simatos, Florian On the impact of mobility in cellular networks. ( In Press: 2019) In: WiOpt 2019, 3 June 2019 - 7 June 2019 (Avignon, France).

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Abstract

It is well-known that mobility increases the throughput of wireless networks, and the main objective of this paper is to show that, depending on the system’s parameters, delay can actually be negatively impacted. To do so, we study a Markovian model where users arrive to the network according to a Poisson process with rate lambda and then move at speed alpha between nodes while in service. Given the complexity of the model, we resort to approximation techniques in order to get insight into the influence of the speed alpha on the mean delay. Our main findings are the following: • in the case where the network consists of two nodes, delay is monotone in alpha for small values of lambda. We furthermore explicit a constant C such that delay is increasing if and only if C <0; • in the general case, we provide numerical results showing that delay is not necessarily monotone in alpha. However, we compare the two extreme cases with 0 and infinite speed, and find that for small values of lambda, delay is worse with infinite speed than with 0 speed if and only if C < 0. Finally, an intuitive interpretation of this constant C is provided.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > IKERBASQUE (SPAIN)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
Laboratory name:
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Deposited By: Florian Simatos
Deposited On:28 Jun 2019 08:23

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