TY - GEN
T1 - D-PRMA
T2 - 2nd ACM International Workshop on Modeling, Analysis and Simulation of Wireless and Mobile Systems, MSWiM 1999
AU - Alasti, Mehdi
AU - Farvardin, Nariman
N1 - Publisher Copyright:
© ACM 1999.
PY - 1999/8/1
Y1 - 1999/8/1
N2 - This paper presents D-PRMA, a dynamic packet reservation multiple access protocol, to integrate voice and data traffic in a micro-cellular wireless network. Similar to other reservation protocols, D-PRMA decouples the speech access procedure from the data access procedure. However, D-PRMA exploits the time variations of the speech coding rate, through statistical multiplexing, to efficiently use the available bandwidth. A dynamic protocol using base station feedback schedules slot assignment among calls. In each frame, D-PRMA allocates bandwidth among calls as needed. Ongoing calls are always assigned some minimum bandwidth to allow for coding of the background noise during silence periods. In this way, undesired contentions that arise in PRMA due to silence-to-talkspurt transitions would be avoided. An embedded coding scheme is employed in the voice coder to help the system control the rate of the calls during congestion by selectively dropping some of the less significant packets, thus causing a graceful degradation of quality. Compared to other access protocols, D-PRMA can accommodate more voice calls while keeping the speech quality above an acceptable threshold. Slots not used by voice traffic will be assigned to the data traffic.
AB - This paper presents D-PRMA, a dynamic packet reservation multiple access protocol, to integrate voice and data traffic in a micro-cellular wireless network. Similar to other reservation protocols, D-PRMA decouples the speech access procedure from the data access procedure. However, D-PRMA exploits the time variations of the speech coding rate, through statistical multiplexing, to efficiently use the available bandwidth. A dynamic protocol using base station feedback schedules slot assignment among calls. In each frame, D-PRMA allocates bandwidth among calls as needed. Ongoing calls are always assigned some minimum bandwidth to allow for coding of the background noise during silence periods. In this way, undesired contentions that arise in PRMA due to silence-to-talkspurt transitions would be avoided. An embedded coding scheme is employed in the voice coder to help the system control the rate of the calls during congestion by selectively dropping some of the less significant packets, thus causing a graceful degradation of quality. Compared to other access protocols, D-PRMA can accommodate more voice calls while keeping the speech quality above an acceptable threshold. Slots not used by voice traffic will be assigned to the data traffic.
UR - http://www.scopus.com/inward/record.url?scp=85029363385&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85029363385&partnerID=8YFLogxK
U2 - 10.1145/313237.313247
DO - 10.1145/313237.313247
M3 - Conference contribution
AN - SCOPUS:85029363385
T3 - Proceedings of the 2nd ACM International Workshop on Modeling, Analysis and Simulation of Wireless and Mobile Systems, MSWiM 1999
SP - 41
EP - 49
BT - Proceedings of the 2nd ACM International Workshop on Modeling, Analysis and Simulation of Wireless and Mobile Systems, MSWiM 1999
Y2 - 20 August 1999
ER -