Call admission control in wireless multimedia networks

Call admission control (CAC) is a mechanism used in networks to ensure quality of service (QoS). In wireless networks employing DS-CDMA, incorporation of the signal to interference ratio, which has been proposed as a key indicator of QoS, in CAC schemes leads to the interplay of signal processing, traffic modeling and cross-layer design. Multimedia wireless services benefit substantially from CAC schemes in providing differentiated service guarantees to different classes of users.