What is CSoHSPA (Circuit Switched Voice over HSPA)?

Voice services over wireless networks have generally been given by circuit-switched (CS) frameworks where a dedicated channel is utilized for each voice call. HSDPA and HSUPA together called HSPA, have been normalized in 3GPP. They gave huge enhancement over data rate and packet delay decrease by utilizing highlights. The capacity upgrades of CSoHS are because of time diversity acquire by the utilization of HARQ and the DTX which decrease the absolute transmitted power and interference on the uplink. On the downlink, the high CSoHS capacities obtained can utilize delay and channel-sensitive MAC- hs scheduling and asset allocation.