Paper Info
Title
Voice over ATM using AAL2 and bit dropping: performance and call admission control
Abstract
Asynchronous transfer mode (ATM) adaptation layer 2 (AAL2) has been designed for efficient transport of voice, fax, and voiceband data (VBD) traffic over an ATM virtual circuit. The protocol helps achieve low latency and high bandwidth efficiency while applying suitable compression methods on voice/VBD/fax calls and silence elimination on voice calls. We analyze the performance and capacity of an ATM multiplexer based on AAL2 adaptation. We assume that embedded adaptive differential pulse code modulation (ADPCM) is used to compress voice, and silence elimination is used to achieve statistical multiplexing gain. The embedded ADPCM coding scheme allows selective dropping of less significant bits of voice during congestion in the ATM/AAL2 multiplexer. We compare the call capacities of voice multiplexers with and without bit dropping (BD). The performance models and results presented are based on fairly general assumptions and can be used for traffic engineering and call admission control in land-line or wireless ATM systems for a variety of voice/voiceband compression algorithms. A generalized algorithm for call admission control is also described
Year
DOI
Venue
1999
10.1109/49.743693
IEEE Journal on Selected Areas in Communications
Keywords
DocType
Volume
atm virtual circuit,call admission control,voice call,aal2 multiplexer,voice multiplexers,aal2 adaptation,compress voice,silence elimination,atm multiplexer,wireless atm system,asynchronous transfer mode,statistical multiplexing,transport protocols,multiplexing,bandwidth,wireless network,packet switching,protocols,transport protocol,congestion control,performance
Journal
17
Issue
ISSN
Citations 
1
0733-8716
12
PageRank 
References 
Authors
1.15
14
2
Name
Order
Citations
PageRank
Kotikalapudi Sriram117714.27
Yung-terng Wang229960.29