Title :
Dynamic Call Admission Control for Uplink in 3G/4G CDMA-Based Systems
Author_Institution :
Budapest Univ. of Technol. & Econ., Budapest
Abstract :
Call admission control (CAC) strongly influences the performance of 3G/4G spread spectrum systems because it determines the number of active users that are admitted to the network, i.e., influences spectral efficiency. A novel air interface CAC algorithm is introduced in this paper. It optimizes the utilization of radio resources and provides real-time adaptation to the radio channel with generalized multiplicative fading. Users are handled as memory-less traffic sources. The suggested CAC method was evaluated for lognormal fading and on/off traffic.
Keywords :
3G mobile communication; 4G mobile communication; code division multiple access; fading channels; telecommunication congestion control; 3G CDMA-based systems; 4G CDMA-based systems; CAC; call admission control; multiplicative fading; radio channel; spread spectrum systems; Admission control; Bit error rate; Call admission control; Control systems; Costs; Fading; Interference; Multiaccess communication; Spread spectrum communication; Telecommunication traffic; Code division multiaccess (CDMA); fading channels; land mobile radio cellular systems; pseudonoise coded communication;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2007.899932
