GPRS and Edge(RSD培训)General Packet Radio Services GPRS Radio Interface + Measurements Reiner Stuhlfauth, 1MAT 1 Structure of presentation Structure of presentation GPRS - Radio Interface EDGE: 8 PSK -Modulation and MCS Measurements with CMU 200 Reiner Stuhlfauth, 1MAT 2 Technology Overview EDGE circuit switched circuit switched GSM circuit switched HSCSD GPRS packet switched ECSD EGPRS classic EDGE packet switched EGPRS GPRS = Extension of GSM ECSD = Enhanced Circuit Switched Data = Extension of GSM/HSCSD EGPRS = Enhanced GPRS = Extension of GPRS Reiner Stuhlfauth, 1MAT 3 Technologies: Characteristics Technology GSM HSCSD GPRS ECSD EGPRS Mode of Data Transfer Circuit Switched Circuit Switched Packet Switched Circuit Switched Packet Switched Modulation GMSK GMSK GMSK GMSK + 8PSK GMSK + 8PS……