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TR 23.877 (SA2)
Architectural aspects of
Speech-enabled services

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V6.0.0 (Wzip)    2004/04    18 p.

Rapporteur:  Dr. Xuan, Qing
See also:  SR-related TS/TR    

The service requirements on Speech Enabled Services defined in TS 22.243 may place architectural requirements on the CS and PS domains and the IMS. Additionally various techniques for improving speech recognition performance may be identified which have architectural impact.

The objective of TR is to document these architectural impacts.


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1 Scope    2 References    3 Definitions and abbreviations    3.1 Definitions    3.2 Abbreviations    4 Techniques for improving speech recognition performance    4.1 Additional noise suppression in terminal    4.2 Disable DTX for improving ASR performance    4.3 Indication of use/non-use of DTX    4.4 Indication of codec mode to ASR platform    4.5 Command needed to provide high data rate codec for speech recognition mode    4.6 TFO needed in ASR platform for AMR wide band mode    4.7 Regional accents and ASR platforms    5 Impacts of speech recognition improvements on CS domain    5.1 High level TFO signalling flows in GSM/UMTS network    5.2 Activation mechanism for SRM session    5.3 Deactivation mechanism for SRM session    5.4 ASR platform outside of the Mobile Network    5.5 Charging    5.6 Roaming    5.7 An alternative solution for triggering speech recognition session via CTM    6 Impacts of speech recognition improvements on PS domain    6.1 Charging - RADIUS connected to ASR platform    6.2 Fetching regional accent information from MSISDN associated database    6.3 Roaming    7 Impacts of speech recognition improvements on IMS domain    7.1 ASR server directly "through connects" the call to the B party    7.2 ASR server acting in call transfer mode    7.3 Uni-directional codec and SDP    7.4 Charging    7.5 Roaming - support of roaming users    8 Security    9 Privacy    10 Analysis and conclusions    10.1 Impact of potential techniques on network entities    10.2 Summary    A Change history   


1   Scope   Word-p. 5
2   References
3   Definitions and abbreviations   Word-p. 6
4   Techniques for improving speech recognition performance
5   Impacts of speech recognition improvements on CS domain
6   Impacts of speech recognition improvements on PS domain
7   Impacts of speech recognition improvements on IMS domain
8   Security   Word-p. 15
9   Privacy
10   Analysis and conclusions   Word-p. 16
A   Change history   Word-p. 18      Up

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