A.4 Design Constraints
26.2673GPPeCall data transferGeneral descriptionIn-band modem solutionRelease 17TS
– The candidate algorithm as implemented in the IVS should not have more than 10 times the complexity of CTM. The candidate algorithm as implemented in the PSAP should not have more than 20 times the complexity of CTM.
The complexity is estimated by compiling the C-Codes under similar compiler conditions and then measuring the processing times.
– The candidate algorithm as implemented in the IVS should not require more than 20KB of data memory. The candidate algorithm as implemented in the PSAP should not require more than 40KB of data memory.
The memory requirements are estimated by inspection of the C-Codes.
– The IVS modem shall not be dependent on knowledge of the UE (e.g. the speech codec being used and the radio channel conditions).
– The IVS modem shall not require changes in the UE.
– The PSAP Modem shall not be dependent on knowledge of the call path (e.g. the speech codec being used and the radio channel conditions, delay, transcoding, etc.).
Annex B (informative):
Change history
|
Change history |
|||||||
|
Date |
TSG SA# |
TSG Doc. |
CR |
Rev |
Subject/Comment |
Old |
New |
|
2009-03 |
43 |
SP-090008 |
Approved at TGS SA#43 |
2.0.0 |
8.0.0 |
||
|
2009-06 |
44 |
SP-090251 |
0001 |
1 |
Correction of the required number of transmitted ACK messages |
8.0.0 |
8.1.0 |
|
2009-09 |
45 |
SP-090565 |
0002 |
1 |
Integration of higher-layer acknowledgement message |
8.1.0 |
8.2.0 |
|
2009-09 |
45 |
SP-090576 |
0003 |
1 |
Integration of IVS-initiated signalling option |
8.1.0 |
8.2.0 |
|
2009-09 |
45 |
SP-090624 |
0004 |
3 |
IVS transmitter termination correction |
8.1.0 |
8.2.0 |
|
2009-12 |
46 |
SP-090702 |
0005 |
1 |
Correction to text in clause 4.3 |
8.2.0 |
8.3.0 |
|
2009-12 |
46 |
Version for Release 9 |
8.3.0 |
9.0.0 |
|||
|
2010-06 |
48 |
SP-100297 |
0007 |
Detector for handling PCM sample inversion in the network |
9.0.0 |
9.1.0 |
|
|
2010-06 |
48 |
SP-100297 |
0009 |
Feedback signal modifications to increase robustness in the presence of network echo cancellers |
9.0.0 |
9.1.0 |
|
|
2010-12 |
50 |
SP-100783 |
0011 |
1 |
Correction of synchronization procedures in the eCall in-band modem |
9.1.0 |
9.2.0 |
|
2010-12 |
50 |
SP-100783 |
0013 |
1 |
State machine corrections in the eCall in-band modem |
9.1.0 |
9.2.0 |
|
2011-03 |
51 |
SP-110033 |
0015 |
Correction of downlink message encoding table |
9.2.0 |
9.3.0 |
|
|
2011-03 |
51 |
Version for Release 10 |
9.3.0 |
10.0.0 |
|||
|
2012-03 |
55 |
SP-120028 |
0016 |
Clarification of START, LLACKs, and HLACKs messages |
10.0.0 |
11.0.0 |
|
|
2012-12 |
58 |
SP-120766 |
0017 |
1 |
Clarification on switching IVS to robust modulator mode |
11.0.0 |
12.0.0 |
|
2015-12 |
70 |
Version for Release 13 |
12.0.0 |
13.0.0 |
|||
|
Change history |
|||||||
|
Date |
Meeting |
TDoc |
CR |
Rev |
Cat |
Subject/Comment |
New version |
|
2017-03 |
75 |
Version for Release 14 |
14.0.0 |
||||
|
2018-06 |
80 |
Version for Release 15 |
15.0.0 |
||||
|
2020-07 |
– |
– |
– |
– |
– |
Update to Rel-16 version (MCC) |
16.0.0 |
|
2022-04 |
– |
– |
– |
– |
– |
Update to Rel-17 version (MCC) |
17.0.0 |