Packet or Circuit Switched Voice Radio Bearers-A Capacity Evaluation for GERAN
2002 (English)Conference paper (Refereed)
GERAN, including the EDGE radio interface, con-stitutes the 3G evolution of GSM. The use of packet switched voice radio bearers has been discussed in the GERAN standardization, but has as yet not been adopted. This paper presents a thorough capacity comparison of circuit and packet switched voice bearers, applied to GERAN. Thus the standardization decision is verified, but also a framework for future similar investigations is provided. Several parameters affect the relative performance of circuit and packet switching. This report evaluates the effect of four of these parameters, expected to have major impact on the relative performance: reuse factor, resource pool size, voice activity, and additional overhead in the packet switched case. Varying the above parameters, it is seen that in certain blocking-limited scenarios packet switching may increase capacity significantly. The highest overall capacity is however achieved in inter-ference-limited scenarios, for which packet switching provides no capacity gain.
Place, publisher, year, edition, pages
Virginia Tech , 2002.
Computer and Information Science
Research subject SRA - ICT
IdentifiersURN: urn:nbn:se:kth:diva-28013OAI: oai:DiVA.org:kth-28013DiVA: diva2:383803
Symposium on Wireless Personal Communications
QC 201101112011-01-052011-01-052011-01-11Bibliographically approved