Reassembling - Huawei MU609 Application Manual

HUAWEI MU609 HSPA LGA Module
Application Guide
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The storage space occupied by a segment of a long text message is as follows:
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For all the three encoding schemes, a short message occupies a maximum of 1120
bits (160 x 7, 140 x 8, or 70 x 16) in the storage. If a text message's size is larger
than 1120 bits, the message is a long message.
Figure 7-1 Relationships between character sets

7.5.2 Reassembling

Issue 02 (2013-09-18)
8-bit encoding: 8 bits
UCS2 encoding: 16 bits
GSM 7-bit encoding: 153 bits x 7 = 1071 bits
8-bit encoding: 134 bits x 8 = 1072 bits
UCS2 encoding: 67 bits x 16 = 1072 bits
GSM 7-bit character set
8-bit character set
UCS2 character set
Relationships between character sets
The host applications can reassemble the segments of a long text based on the
following:
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The protocol header in the user data (TP-UD) of a PDU (see the 3GPP TS
23.040 9.2.3.24.1)
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The sender's number contained in each segment
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The interval between the time when each segment is received (The interval
between the two neighboring segments' receiving time is less than 60
seconds, and the maximum interval between the first and the last segments'
receiving time is 24 hours)
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Text Message Application Scenarios
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