R.5 Huffman Initializations

23.0423GPPCompression algorithm for text messaging servicesRelease 17TS

Huffman Initialization ID 0 (decimal)

Only control symbols are included in this initialization. It’s rendition is therefore independent of character set.

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.

Character Group Processing is always disabled:

The number of frequency initializations is 4.

The initial frequencies are:

Table R.1: Character Group Processing is always 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 can not be enabled therefore:

The number of frequency initializations is 0.

Huffman Initialization ID >0 (decimal)

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

Annex S (informative):
Change history

TSG#

TDoc

VERS

NEW_VERS

CR

REV

REL

CAT

WORKITEM

SUBJECT

T#4

3.0.0

New

Creation of 3GPP 23.042 out of GSM 03.42 v.7.1.0

T#6

TP-99237

3.0.0

3.1.0

001

R99

F

TEI

Adaptations for UMTS

T#11

3.1.0

4.0.0

Rel-4

Upgrade to Rel-4

4.0.0

4.0.1

Rel-4

2001-10: Replacement of erroneous R99 test vector file by correct Rel-4 one.

T#16

4.0.1

5.0.0

Rel-5

Upgrade to Rel-5

T#26

5.0.0

6.0.0

Rel-6

Upgrade to Rel-6

6.0.0

7.0.0

Rel-7

Upgrade to Rel-7

7.0.0

8.0.0

Rel-8

Upgrade to Rel-8

8.0.0

9.0.0

Rel-9

Upgrade to Rel-9

9.0.0

10.0.0

Rel-10

Upgrade to Rel-10

10.0.0

11.0.0

Rel-11

Upgrade to Rel-11

11.0.0

12.0.0

Rel-12

Upgrade to Rel-12

12.0.0

13.0.0

Rel-13

Upgrade to Rel-13

Change history

Date

Meeting

TDoc

CR

Rev

Cat

Subject/Comment

New version

2017-03

CT-75

Update to Rel-14 version (MCC)

14.0.0

2018-06

SA-80

Update to Rel-15 version (MCC)

15.0.0

2020-07

SA-88e

Update to Rel-16 version (MCC)

16.0.0

2022-03

SA-95e

Update to Rel-17 version (MCC)

17.0.0