Over the past few years, there has been a growing interest for research in wireless adaptive networking and resource management to efficiently handle wireless communications between mobile hosts and base stations. Moreover, in wireless environments, the bandwidth of an ongoing multimedia flow can dynamically be adjusted, so there must be an efficient bandwidth allocation scheme to ensure quality-of-service (QoS) guarantees and high system utilization. In this paper, the attention is focused on the management of mobile services. In particular, two classes of service, i.e., mobility independent predictive (MIP) and mobility dependent predictive (MDP), have been considered, as defined in integrated service packet networks. A utility-based rate adaptation algorithm has been considered, and an admission control has been proposed, taking into account channel conditions, through a slow-fading channel model for wireless LAN 802.11b. The valued algorithm is based on a user utility function, and the admission control can use the prereservation phase among potentially visited cells from MIP hosts while only considering the bandwidth availability on current cells for MDP services. We analyzed the MIP users' mobility along coverage areas to reduce passive resource reservations on cells that users will probably never visit through the knowledge of some mobility parameters. A prediction technique is also proposed. The performances of the wireless system have been evaluated in terms of total bandwidth utilization for MIP services, average user perceived utility, and system outage probability.

Utility-Based Predictive Services for Adaptive Wireless Networks with Mobile Hosts

DE RANGO, Floriano;MARANO, Salvatore
2009

Abstract

Over the past few years, there has been a growing interest for research in wireless adaptive networking and resource management to efficiently handle wireless communications between mobile hosts and base stations. Moreover, in wireless environments, the bandwidth of an ongoing multimedia flow can dynamically be adjusted, so there must be an efficient bandwidth allocation scheme to ensure quality-of-service (QoS) guarantees and high system utilization. In this paper, the attention is focused on the management of mobile services. In particular, two classes of service, i.e., mobility independent predictive (MIP) and mobility dependent predictive (MDP), have been considered, as defined in integrated service packet networks. A utility-based rate adaptation algorithm has been considered, and an admission control has been proposed, taking into account channel conditions, through a slow-fading channel model for wireless LAN 802.11b. The valued algorithm is based on a user utility function, and the admission control can use the prereservation phase among potentially visited cells from MIP hosts while only considering the bandwidth availability on current cells for MDP services. We analyzed the MIP users' mobility along coverage areas to reduce passive resource reservations on cells that users will probably never visit through the knowledge of some mobility parameters. A prediction technique is also proposed. The performances of the wireless system have been evaluated in terms of total bandwidth utilization for MIP services, average user perceived utility, and system outage probability.
Adaptive bandwidth allocation, Admission control, Markov model, Mobility management, Partial prereservation, Utility function
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11770/134904
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 39
  • ???jsp.display-item.citation.isi??? 22
social impact