TR 26.959 – Enhanced VoLTE Performance Study
3GPP TR 26.959 is the 3GPP Technical Report for Enhanced VoLTE Performance Study. It is published in 5 releases (Rel-15 to Rel-19); the latest version is 19.0.0 in Rel-19.
Studies mechanisms to improve VoLTE quality in weak LTE coverage by optimizing codec robustness and SRVCC handover thresholds.
Releases and versions of TR 26.959
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.0.0 | Read · Download (3GPP) |
| Rel-18 | 18.0.0 | Read · Download (3GPP) |
| Rel-17 | 17.0.0 | Read · Download (3GPP) |
| Rel-16 | 16.0.0 | Read · Download (3GPP) |
| Rel-15 | 15.0.0 | Read · Download (3GPP) |
Scope of TR 26.959
Category: Services (IMS). Technology generation: 4G. Network layer: Services.
Who should read this specification?
- Network operators
- Device manufacturers
- Researchers and academics
Implementation notes
Complexity level: Advanced. Implementation difficulty: Medium.
Key technologies
Specifications referenced by TR 26.959
- TS 23.759 VoLTE/ViLTE Handover Optimization Study
- TR 21.905 3GPP Terminology and Definitions
- 21.952 Codec for Enhanced Voice Services (EVS); Performance characterization
- TS 26.114 IMS Multimedia Telephony Client
- TS 26.445 EVS Codec Specification
- TS 36.331 E-UTRA Radio Resource Control (RRC) Protocol
- TS 23.203 Policy and Charging Control Architecture
- TS 23.401 Evolved Packet System Architecture
Specifications that reference TR 26.959
Other specifications in the 26 series
- TR 26.954 UE Headset Electrical Interface Testing
- TR 26.955 Video Codec Analysis for 5G Services
- TR 26.956 Beyond 2D Video Formats & Codecs Study
- TR 26.957 Evaluation of MPEG DASH SAND for 3GPP
- TR 26.962 ITT4RT Operation and Usage Guidelines
- TR 26.966 HEVC Video Enhancements Study
- TR 26.967 eCall via CTM Suitability Analysis
- TR 26.969 eCall In-band Modem Performance Characterization
Related glossary terms
Related topics
Related technologies
Frequently asked questions
What is 3GPP TR 26.959?
3GPP TR 26.959 is the 3GPP Technical Report for Enhanced VoLTE Performance Study. Studies mechanisms to improve VoLTE quality in weak LTE coverage by optimizing codec robustness and SRVCC handover thresholds.
Which 3GPP releases include TR 26.959?
TR 26.959 is published in 5 releases, from Rel-15 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).
What category does TR 26.959 belong to?
TR 26.959 belongs to the Services (IMS) category of 3GPP specifications. It applies to 4G networks.
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