EMBEDDED APPLICATIONS FCT
2.4.2
IP Fragmentation
The radio device stack supports IP fragmentation and will
successfully reconstruct fragmented packets provided:
1
2
3
No individual fragment exceeds the maximum packet
size of 3100 bytes
The total reconstructed size of the fragmented packet
does not exceed 3100 bytes
The internal packet buffers are not exhausted during
the period that the fragments are being received.
The TCP/IP stack will, especially during busy periods,
buffer and consolidate transmit data. This will sometimes
result in data being sent from the radio device in larger
units than submitted by the application. However, the
largest sent-packet size will not exceed the reported
Maximum Transmission Unit (MTU) of the underlying link.
2.4.3
Performance
Both the GSM module and the underlying GPRS transport
infrastructure impose performance restrictions that can
influence the effective IP performance of the application
such that throughput can not be guaranteed.
LZT 123 8019 R1A
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