Teletraffic simulation of cellular networks: modeling the handoff arrivals and the handoff delay

Abstract

This paper presents an analysis of teletraffic variables in cellular networks. The variables studied are the time between two consecutive handoff arrivals and the handoff delay. These teletraEc variables are characterized by means of an advanced software simulator that models several scenarios assuming Fixed Channel Allocation. Information about the Quality of Service is also provided. A large set of scenarios has been simulated and the characterization results derived f?om its study have been presented and analyzed.

Simulation of teletraffic variables in umts networks: impact of lognormal distributed call duration

“…The simulator presented in [7] has been adapted to include the particularities of UMTS networks [12]. The main changes are summarized in the following subsections.…”

“…The scenarios considered in this study use the parameters gathered in Table II and III, to which an offered load of 50, 70 and 90% has been applied for a high mobility pattern environment. Most parameters have been borrowed from similar studies and handbooks [7,12,17]; notice that the Standard Deviation is used to completely define the lognormal distribution of the call duration.…”

“…Thus, [1] and [2] propose an analytical study of this variable, while [3] provides a characterization of it using a simulation procedure and [4] does the same by means of a field-data analysis. On the other hand, variables related with the HO process have been rarely considered in the recent teletraffic research [5][6][7][8]. However, since the HO rate has become higher along with the reduction of the cell size, their importance has increased.…”

“…However, since the HO rate has become higher along with the reduction of the cell size, their importance has increased. The reference studies related with these variables consider only Fixed Channel Allocation (FCA) networks [1][2][3][4][5][6][7][8].…”

Contribución a la gestión de recursos en redes de acceso celulares. Modelos analíticos y evaluación de prestaciones

“…En este escenario el movimiento relativo del terminal respecto al satélite está provocado fundamentalmente por el movimiento del satélite y es, por tanto, de naturaleza determinista. En [MEBC02], se utiliza un modelo de simulación para caracterizar el tiempo transcurrido entre la petición del handover y la ejecución de éste, o la terminación forzosa en caso de que no llegue a ejecutarse. Este retardo se correspondería con el tiempo de ocupación de recursos mientras el terminal está en el área de handover.…”