On VoIP Capacity Gains in Frame-Based Packet-Switched Wireless Networks
Authors: Sambale, Klaus and Klagges, Karsten
Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University
: Klaus Sambale
In In Leistungs-, Zuverlässigkeits- und Verlässlichkeitsbewertung von Kommunikationsnetzen und Verteilten Systemen, 5. GI/ITG-Workshop MMBnet 2009, p. 8, Universität Hamburg, Department Informatik, 2009.
Publication Date: Sep, 2009
On page(s):8
ISBN:
Abstract
It is expected that future IMT-Advanced systems will operate packet-switched due to the dominance of data services. However, it is inherent to packet-switched systems to not
cope well with voice services as periodic resource usage patterns are not signaled efficiently. In this paper, we present a simple technique to reduce the signaling overhead for resource allocations especially for Voice-over-IP (VoIP) traffic thus increasing the VoIP capacity of the system, considerably. The proposed technique assigns Persistent Resource Allocations (PRAs) per VoIP connection that are valid for a fix number of frames. Resource allocations for succeeding frames have to be signaled by new PRAs. This supersedes any procedures for deallocation of PRAs and associated error handling. Within our work we introduce an analytical model to evaluate the possible VoIP capacity gains. Additionally, we show the potential of statistical multiplexing of VoIP calls. We present simulation results for the packet loss rates resulting from failed resource requests and lack of resources. Both techniques are applicable to all packet-switched systems. We show exemplary results for the WiMAX system.
Author Keywords
DownloadBibtex
@INPROCEEDINGS{SaKlMMBnet09,
AUTHOR = {Sambale, K. and Klagges, K.},
TITLE = {On VoIP Capacity Gains in Frame-Based Packet-Switched Wireless Networks},
YEAR = {2009},
MONTH = {Sep},
PAGES = {8},
ADDRESS = {Universität Hamburg, Department Informatik},
BOOKTITLE = {In Leistungs-, Zuverlässigkeits- und Verlässlichkeitsbewertung von
Kommunikationsnetzen und Verteilten Systemen, 5. GI/ITG-Workshop MMBnet
2009},
AFFILIATION = {Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University},
ANNOTE = {persistent resource allocation, VoIP, IEEE802.16},
URL = {https://www.comnets.rwth-aachen.de}
}