TR 22.813 ★
Study of Use Cases and Requirements
for enhanced Voice Codecs for the EPS

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V10.0.0 (Wzip) 2010/04 15 p.

essential Table of Contents for TR 22.813 Word version: 10.0.0

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2 References Word‑p. 5

3 Definitions, symbols and abbreviations Word‑p. 6

4 Overview on the EPS service objectives and characteristics Word‑p. 6

4.1 EPS objectives Word‑p. 6

4.2 EPS requirements Word‑p. 7

4.3 EPS Enhanced Voice Service Word‑p. 7

5 System and service requirements Word‑p. 8

5.1 Quality of user experience Word‑p. 8

5.2 Efficiency Word‑p. 9

5.3 Backward service interoperability with pre-Rel-10 3GPP networks and devices Word‑p. 9

6 High level technical requirements on speech codecs Word‑p. 9

6.1 Design constraints Word‑p. 9

6.1.1 Audio bandwidth Word‑p. 9

6.1.2 Number of audio channels Word‑p. 9

6.1.3 Bit rates Word‑p. 9

6.1.4 Algorithmic delay Word‑p. 10

6.1.5 Complexity Word‑p. 10

6.1.6 Backward interoperability Word‑p. 10

6.2 Performance requirements Word‑p. 10

6.2.1 Speech quality Word‑p. 10

6.2.2 Quality for mixed content and music Word‑p. 11

6.2.3 Robustness to packet loss and delay jitter Word‑p. 11

6.3 Transcoding performance Word‑p. 12

7 Assessment of existing codecs Word‑p. 12

8 Strategy for EPS's codec(s) standardization Word‑p. 12

A Use cases Word‑p. 12

A.1 High quality audio conferencing over heterogeneous networks and with different terminals Word‑p. 12

A.2 Two-party communication Word‑p. 13

A.3 Interoperability with pre-Rel-10 3GPP systems Word‑p. 13

A.4 Mobility scenarios Word‑p. 13

A.5 Call Hold and (Explicit) Call transfer Word‑p. 13

A.6 Voice-mail service Word‑p. 14

A.7 Access to network media server content Word‑p. 14

A.8 Music on hold Word‑p. 14

$ Change history Word‑p. 15