GERAN is an abbreviation for GSM EDGE Radio Access Network. The standards for GERAN are maintained by the 3GPP (Third Generation Partnership Project). GERAN is a key part of GSM, and also of combined UMTS/GSM networks. GERAN is the radio part of GSM/EDGE together with the network that joins the base stations (the Ater and Abis interfaces) and the ...
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GSM / EDGE RAN (Radio Access Network). The higher-speed TDMA radio access network defined by the EDGE TDMA standard. The original GSM TDMA radio technology is based upon GMSK modulation but EDGE uses 8PSK, eight-way phase shift keying). EDGE can share spectrum, and even TDMA timeslots, with GSM, unlike UTRAN. UTRAN uses BPSK and QPSK with WCDMA for multiple access. GERAN standards are defined by 3GPP.
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