The GSM/EDGE radio access network-GERAN; system overview and performance evaluation

The GSM/EDGE radio access network (GERAN) enables the common evolution of GSM, TDMA/136 and EDGE towards providing full 3/sup rd/ generation services. This includes introducing support for generic real-time services as well as interfacing to an all-IP 3G core network common with UMTS. Performance evaluations show that in certain scenarios in GERAN statistical multiplexing and/or 8PSK in half-rate channels can be utilized to increase the system capacity compared to GSM.