GPRS Alternatives
n radio resource allocation
proposal one
normal traffic channel used with modified access and setup
mechanism
Radio Link Protocol (RLP) used for retransmission
standard authentication and ciphering applied
proposal two
special GPRS Packet Channel (GPCH) allocated in every cell
reservation procedure reserves channel for duration of transaction
number of allocated GPCHs should be dynamically allocated
depending on traffic (one user per GPCH)
RLP can be used
ciphering and authentication require some modification due to
shared channel (shared over time, no multiplexing)