3GPP TSG RAN WG3 - Iu, Iub, Iur, S1, X2 and UTRAN/E-UTRAN

The 3rd Generation Partnership Project (3GPP) is the primary body for developing technology specifications for cellular networks. It self-organises through its Working Groups coordinated by the Chairs of the Technical Specifications Groups (TSGs).

RAN WG3 (Iu, Iub, Iur, S1, X2 and UTRAN/E-UTRAN) 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.
• UTRAN and E-UTRAN O&M requirements.
• Iu interface protocol specifications, i.e. access stratum protocols over the Iu reference point.
• Iur and Iub interface protocol specifications.
• Iupc interface protocol specifications.
• Iubc 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.
• M1, M2 and M3 interface protocol specifications.
• Iuh, and Iurh interface protocols specification.
• LTE Positioning Protocol A (LPPa).
• Xw interface protocol specifications.

Chairmen

Gino Masini, RAN3 Chair, Ericsson LM. Member of ETSI. Elected to 2nd term in May 2019.

Yin Gao, RAN3 Vice-Chair, ZTE Corp. Member of CCSA. Elected in August 2019.

Sasha Sirotkin, RAN3 Vice-Chair, Intel. Member of ATIS. Elected to 2nd term in Many 2019.

Secretary

Issam Toufik