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– |
proposal
three
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• |
GPCHs
allocated per cell
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• |
packets
from multiple users are multiplexed on channel
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RLP
and security mechanisms need to be modified
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requires
dynamic allocation of GPCH depending on traffic
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| n |
packet
transport mechanism
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proposal
one
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use
existing signaling network along with SMS (Short Message
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Services)
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Gateway
MSC contains IWF2 which queries HLR for routing
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information
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message
size constrained to SMS limit: max. frame length of 272
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octets
on A interface (between MSC and BSC), overhead of higher
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protocol layers leaves 140 octets, enough for 160
7-bit ASCII
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characters
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transfer
delay must be improved
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