TCRA : a resource reservation scheme for handover issue in LEO satellite systems

Lila Boukhatem (1) , André-Luc Beylot (2, 3) , Dominique Gaïti (4, 5) , Guy Pujolle (1)

1 RP - Réseaux et Performance
2 IRIT-RMESS - Réseaux, Mobiles, Embarqués, Sans fil, Satellites
3 Toulouse INP - Institut National Polytechnique (Toulouse)
4 ERA - Environnement de Réseaux Autonomes
5 OASIS - Objets et Agents pour Systèmes d'Information et Simulation

In this paper, we propose a time-based channel reservation algorithm (TCRA) suitable for handover and call admission control procedures in future mobile satellite systems. These systems are characterized by a high rate of handover attempts, which can degrade significantly their performance. Therefore, we propose TCRA, a scheme that guarantees a null handover failure probability by using a channel reservation strategy in the cells to be crossed by the user. The performance of TCRA has been compared to the guaranteed handover scheme. The TCRA reservation method has the advantage of a better channel utilization by locking the resources only for their expected time of use. A mathematical model has been developed for both schemes, and its results have been validated through simulations.

Keywords: IRT-Reseau; Low earth orbit satellites; Satellite constellations; Call admission control; Degradation; Mathematical model; Telecommunication switching; Network topology; Cellular networks; Admission control; Performance analysis

Domains: Mobile Computing

Lila Boukhatem, André-Luc Beylot, Dominique Gaïti, Guy Pujolle. TCRA : a resource reservation scheme for handover issue in LEO satellite systems. IEEE Wireless Communications and Networking (WCNC 2003), IEEE, Mar 2003, New Orleans, LA, United States. pp.114-119, ⟨10.1109/WCNC.2003.1200330⟩. ⟨hal-03924187⟩