Title :
Packing density of voice trunking using AAL2
Author :
Liu, Chunlei ; Munir, Sohail ; Jain, Raj ; Dixit, Sudhir
Author_Institution :
Dept. of Comput. & Inf. Sci., Ohio State Univ., Columbus, OH, USA
fDate :
6/21/1905 12:00:00 AM
Abstract :
AAL2 has been adopted in ITU-T and ATM Forum to reduce the packing delay for voice trunking. A parameter called “timer CU” is used in AAL2 to avoid prolonged delay for any packet. However, the AAL2 documents do not discuss how to set the timer CU value. We establish a Markov chain model to analyze the AAL2 packing process. We find that the packing density and link efficiency depend significantly on the timer CU value. The analysis of this paper gives an algorithm to calculate a reference timer CU value to achieve desired link efficiency. Simulation results that verify the analysis are also presented
Keywords :
Markov processes; asynchronous transfer mode; delays; digital simulation; packet switching; timing; voice communication; AAL2 packing process; ATM Forum; ITU-T; Internet telephony; Markov chain model; algorithm; computer networks; link efficiency; packet delay; packing density delay reduction; simulation results; timer CU; voice trunking; Algorithm design and analysis; Analytical models; Asynchronous transfer mode; Codecs; Computational modeling; Computer simulation; Delay effects; Information science; Internet telephony; Propagation delay;
Conference_Titel :
Global Telecommunications Conference, 1999. GLOBECOM '99
Print_ISBN :
0-7803-5796-5
DOI :
10.1109/GLOCOM.1999.830123
