Mobility

Circuit-Switched Voice Services Over HSPA

Date Added: Mar 2010
Format: PDF

Circuit-Switched (CS) Voice Services over HSPA (CSoHS) was recently introduced for 3GPP WCDMA Release 7/8 systems. The benefits of this feature include improving voice and data system capacity by utilizing the enhancements offered by the shared packet transport of HSPA air interface while preserving the already widely deployed core networks. In this paper, the authors discuss the operation and implementation of CSoHS and analyze its performance via simulations. They show that the system capacity of CSoHS is significantly higher than Release 99 CS voice under similar system conditions and voice quality.