HUAWEI MU609 HSPA LGA Module
Application Guide
Text Message Application Scenarios
Issue 02 (2013-09-18)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
65
8-bit encoding: 8 bits
UCS2 encoding: 16 bits
The storage space occupied by a segment of a long text message is as follows:
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
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
The host applications can reassemble the segments of a long text based on the
following:
The protocol header in the user data (TP-UD) of a PDU (see the
3GPP TS
23.040 9.2.3.24.1
)
The sender's number contained in each segment
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)
GSM 7-bit character set
8-bit character set
UCS2 character set
Relationships between character sets
