GPRS

• Medium-speed packet mode extension to GSM

  • similar to CDMA MDR

• FEC rates 1/2 to 1

  • 9.05 to 21.4 kb/s/timeslot

• Likely peak usable throughput ~60 kb/s

• Can use up to 8 timeslots at once

  • dynamically allocated

• Link ARQ with LLC

  • HDLC and LAPD-like

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