WG3 is responsible for the Overall UTRAN/E-UTRAN architecture and the specification of protocols for the Iu, Iur, Iub, S1 and X2 interfaces.
Useful links and information
| About TSG RAN3 | List of elected officials |
| Documents | Meeting documents |
| Specifications | |
| Work items | |
| Meetings | Next meeting information & previous meeting reports and documents |
| Liaisons Statements | |
| Full RAN3 meeting calendar | |
| General info | Email exploder lists |
| RAN Working groups and Ad Hoc groups | |
|---|---|
| TSG RAN Plenary | |
| TSG RAN WG1 | Radio Layer 1 specification |
| TSG RAN WG2 | Radio Layer 2 and Radio Layer 3 RR specification |
| TSG RAN WG3 | Iub Iur and Iu specification - UTRAN O&M requirements |
| TSG RAN WG4 | Radio performance and protocol aspects (system) - RF parameters and BS conformance |
| TSG RAN WG5 | Mobile terminal conformance testing |
| TSG RAN AHG1 | Ad-hoc group on ITU (internal) co-ordination |
Terms of Reference
The RAN3 Terms of Reference (R3-072379) were approved at RAN #38 in Cancun, Mexico, 27-30 November 2007
Within the scope of TSG-RAN, RAN WG3 is responsible for the development of specifications dealing with UTRA, Evolved UTRA, and beyond, and in particular for:
- Overall UTRAN and E-UTRAN architecture
- Synchronisation in UTRAN and E-UTRAN
- Stage 2 work of Work Items allocated by TSG RAN to RAN WG3
- Iu interface protocol specifications, i.e. access stratum protocols over the Iu reference point
- Iur and Iub interface protocol specifications
- Iupc interface protocol specifications
- Transport of implementation specific O&M between the Management System and Node B
- Application of the RANAP on the E-interface
- Iu-ant interface protocol specifications (RF-parts of the layer 1 specification are under the responsibility of RAN4)
- Parts of Iu and Iur protocols common to GERAN and UTRAN (Iu-g and Iur-g)
- S1 and X2 interface protocol specifications including O&M aspects
- M1, M2 and M3 interface protocol specifications
Furthermore, TSG RAN may allocate other tasks to RAN WG3, such as overall delay budget of the access stratum.
Iu, Iub, Iur, S1, X2 and UTRAN/E-UTRAN architecture
Try http://www.3gpp.org/ftp/Specs/html-... for all of the latest information about the group’s meetings.

