Study on security issues to support Group Communication System Enablers (GCSE) for LTE
The present document studies the security aspects of the Group Communication Service Enabler for LTE (GCSE_LTE) and gives an evaluation of possible technical security solutions supporting such an Enabler. The present document looks at security from system perspective and defines functional security requirements for all entities.
Stage 1 requirements for these services are defined in 3GPP TS 22.468 [2].
Different possible Stage 2 solutions for GCSE have been studied in 3GPP TR 23.768 [3].
3GPP TS 23.468 [8] provides the stage 2 description for the 3GPP system provided enablers to support GC services using E-UTRAN in Rel-12.
Based on the work done in 3GPP TS 22.468 [2], 3GPP TR 23.768 [3], and 3GPP TS 23.468 [8] the objectives of the present document are to identify the threats and deduce security requirements, develop GCSE_LTE security solutions, and determine which solution(s) from the present document (Study/TR phase) should be converted into normative specifications for Rel-12.
NOTE: The present document collects requirements that are not normative.