A.5 Huffman Initializations

23.0423GPPCompression algorithm for text messaging servicesRelease 17TS

Huffman Initialization ID 0 (decimal)

The Huffman Initialization is rendered in Character Set ID 3(decimal) = Code Page 850.

The Options value indicates that both character and control symbol updating are enabled.

As described is subclause 6.7.1, the tables below include initialization values for all control symbols that might occur in conjunction with the use of this Huffman Initialization. However, initialization values for control symbols that cannot occur for a particular use of this Huffman Initialization are identified as part of the Huffman initialization process and are not added to the Huffman tree as described in subclause 6.7.2.

The Character Group ID value is 1.

Character Group Processing is disabled:

The number of frequency initializations is 4.

The initial frequencies are:

Table A.5: Character Group Processing is disabled: initial frequencies

Symbol	Value	Frequency
New UCS2 Row	266	1
Keyword	258	1
New 8bit	257	1
New 7bit	256	1

Character Group Processing is enabled:

The number of frequency initializations is 6.

The initial frequencies are:

Table A.6: Character Group Processing is enabled: initial frequencies

Symbol	Value	Frequency
New UCS2 Row	266	1
Change CG1	260	1
Change CG0	259	1
Keyword	258	1
New 8bit	257	1
New 7bit	256	1

Huffman Initialization ID 1 (decimal)

The Huffman Initialization is rendered in Character Set ID 3 (decimal) = Code Page 850.

The Options value indicates that both character and control symbol updating are enabled.

As described is subclause 6.7.1, the tables below include initialization values for all control symbols that might occur in conjunction with the use of this Huffman Initialization. However, initialization values for control symbols that cannot occur for a particular use of this Huffman Initialization are identified as part of the Huffman initialization process and are not added to the Huffman tree as described in subclause 6.7.2.

The Character Group ID value is 1.

Character Group Processing is disabled:

The number of frequency initializations is 32.

The initial frequencies are:

Table A.7: Character Group Processing is disabled: initial frequencies

Symbol	Value	Frequency
New UCS2 Row	266	00001
q	113	00001
x	120	00001
y	121	00001
j	106	00001
v	118	00001
p	112	00001
New 8bit	257	00002
z	122	00002
.	46	00003
k	107	00003
f	102	00003
w	119	00003
Keyword	258	00004
b	98	00004
g	103	00004
o	111	00005
m	109	00006
l	108	00006
u	117	00007
c	99	00007
d	100	00007
New 7bit	256	00009
r	114	00009
t	116	00009
s	115	00010
h	104	00010
a	97	00012
i	105	00013
n	110	00014
e	101	00021
<SP>	32	00032

NOTE: In the above table, the characters "<SP>" are used to represent the "space" character.

Character Group Processing is enabled:

The number of frequency initializations is 34.

The initial frequencies are:

Table A.8: Character Group Processing is enabled: initial frequencies

Symbol	Value	Frequency
New UCS2 Row	266	00001
q	113	00001
x	120	00001
y	121	00001
j	106	00001
v	118	00001
p	112	00001
New 8bit	257	00002
z	122	00002
Change CG0	259	00002
.	46	00003
k	107	00003
f	102	00003
w	119	00003
Keyword	258	00004
Change CG1	260	00004
b	98	00004
g	103	00004
o	111	00005
m	109	00006
l	108	00006
u	117	00007
c	99	00007
d	100	00007
New 7bit	256	00009
r	114	00009
t	116	00009
s	115	00010
h	104	00010
a	97	00012
i	105	00013
n	110	00014
e	101	00021
<SP>	32	00032

Note in the above table, the characters "<SP>" are used to represent the "space" character.

Huffman Initialization ID >1 (decimal)

No other Huffman Initializations are defined and all other values are reserved.

Annex B (normative):
English language parameters