Title :
Analytical model of cell supporting dual rate speech codec
Author :
Basharin, G.P. ; Klapoushak, S.N. ; Konnon, A.M.
Author_Institution :
Telecommun. Syst. Dept., People´´s Friendship Univ. of Russia, Moscow, Russia
Abstract :
This paper considers an analytical model of a cell supporting half rate (HR, H-) and full rate (FR, F-) speech codecs. The dynamic channel allocation scheme that takes into account the signal strength of incoming calls is presented. The number of concurrent F-connections is limited by a threshold value. Full repacking scheme is considered for partially allocated channels. Formulae for performance characteristics e.g. blocking probabilities are derived. An approximated model, based on the state space reduction, is used to obtain numerical results.
Keywords :
cellular radio; channel allocation; speech codecs; analytical model; approximated model; blocking probabilities; cellular networks; concurrent F-connections; dual rate speech codec; dynamic channel allocation scheme; full rate speech codecs; full repacking scheme; signal strength; state space reduction; Analytical models; Channel allocation; GSM; Land mobile radio cellular systems; Markov processes; Quality of service; Speech codecs; State-space methods; Time division multiple access; Traffic control; FDMA; Markov process; QoS; TDMA; approximation; reduced state space; traffic channel (TCH);
Conference_Titel :
Ultra Modern Telecommunications & Workshops, 2009. ICUMT '09. International Conference on
Conference_Location :
St. Petersburg
Print_ISBN :
978-1-4244-3942-3
Electronic_ISBN :
978-1-4244-3941-6
DOI :
10.1109/ICUMT.2009.5345454
