The main advantage of UMTS radio interface is its flexibility in resource management allowed by the W-CDMA (Wideband Code Division Multiple Access) access technique. However, to exploit this flexibility it is necessary to design an efficient Call Admission Control (CAC) scheme able to adapt the number of active calls in each cell according to interference levels and power availability. In this paper we analyze the performance of two CAC styles for voice services in downlink direction, one based on the number of active calls and one on run-time measures of the total power emitted by the base station (BS). Moreover, these two techniques are compared with the Ideal CAC scheme.
Performance evaluation of call admission control techniques for UMTS downlink
CAPONE, ANTONIO;
2003-01-01
Abstract
The main advantage of UMTS radio interface is its flexibility in resource management allowed by the W-CDMA (Wideband Code Division Multiple Access) access technique. However, to exploit this flexibility it is necessary to design an efficient Call Admission Control (CAC) scheme able to adapt the number of active calls in each cell according to interference levels and power availability. In this paper we analyze the performance of two CAC styles for voice services in downlink direction, one based on the number of active calls and one on run-time measures of the total power emitted by the base station (BS). Moreover, these two techniques are compared with the Ideal CAC scheme.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
