charging for GPRS Services

Charging for GPRS Services
• GPRS allows the user to be ‘always connected’
- charging by time is not appropriate
• Some possible methods of charging are:
· By volume of data transferred
· Flat rate for Internet access
· By Quality of Service
· For content - operator may provide own
pages (value added services)
• Quality of Service parameters:
· Service Precedence (priority)
· Reliability
· Delay
· Throughput
Internet
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EDGE
• Enhanced Data rates for GSM Evolution
• Use 8 Phase-Shift Keying (8PSK) modulation
- 3 bits per symbol
• Improved link control allows the system to adapt
to variable channel quality - leads to slightly
reduced coverage area
• Applied to GSM, EDGE allows a maximum data rate of 48 kb/s per
timeslot, giving the quoted figure of 384 kb/s per carrier (8 timeslots)
• EDGE can be applied to HSCSD (ECSD) and GPRS (EGPRS)
• EDGE will be expensive for operators to implement:
• Each base station will require a new EDGE transceiver
• Abis interface between BTS and BSC must be upgraded
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