Impact of mobility on the performance of data flows in OFDMA-based IEEE802.16e systems

• Published in: 2008 IEEE International Symposium on Wireless Communication Systems
• Main Authors: Chahed, Tijani, Tarhini, Chadi
• Other Authors: Méthodes et modèles pour les réseaux (METHODES-SAMOVAR), Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux (SAMOVAR), Institut Mines-Télécom Paris (IMT)-Télécom SudParis (TSP)-Institut Mines-Télécom Paris (IMT)-Télécom SudParis (TSP), Département Réseaux et Services de Télécommunications (RST), Institut Mines-Télécom Paris (IMT)-Télécom SudParis (TSP), Centre National de la Recherche Scientifique (CNRS)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2008
• Subjects: Mobile WiMAX; OFDMA; AMC; Data; Mobility; Capacity; [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI]; Iceland
• Online Access: https://hal.science/hal-01378768; https://doi.org/10.1109/ISWCS.2008.4726136

International audience OFDMA-based IEEE802.16 implements among other features Adaptive Modulation and Coding (AMC) which results in a different bit rate for each user depending on its position in the cell as well as the radio condition it experiences; users away from the base station experience lower throughput. In case of (intra-cell) mobility, the download time for the data user will thus depend on the different locations she or he visits. This in turn impacts the overall (Erlang) capacity of the system defined as the maximum number of users that can be handled simultaneously by the system for a given target blocking probability. This is the focus of the present work where we model the cross-layer capacity of the system under a general user mobility pattern