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ETSI TS 123 303
M00002789
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ETSI TS 123 303 Universal Mobile Telecommunications System (UMTS); LTE; Proximity-based services (ProSe); Stage 2 (3GPP TS 23.303 version 14.1.0 Release 14)
standard by European Telecommunications Standards Institute, 05/01/2017
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Full Description
The present document specifies the Stage 2 of the Proximity Services (ProSe) features in EPS. ProSe features consist of:ProSe discovery (direct or EPC-level) and ProSe Direct Communication (using E-UTRAN or WLAN direct).ProSe discovery identifies that ProSe-enabled UEs are in proximity, using E-UTRAN (with or without E-UTRAN) or EPC.
ProSe Direct Communication enables establishment of communication paths between two or more ProSe-enabled UEs that are in direct communication range. The ProSe Direct Communication path could use E-UTRAN or WLAN.
For Public Safety specific usage:ProSe-enabled Public Safety UEs can establish the communication path directly between two or more ProSeenabled Public Safety UEs, regardless of whether the ProSe-enabled Public Safety UE is served by E-UTRAN.ProSe Direct Communication is also facilitated by the use of a ProSe UE-to-Network Relay, which acts as a relay between E-UTRAN and UEs.Security aspects of ProSe are defined in TS 33.303 [29].