Study on Protection against Unsolicited Communication for IMS (PUCI)
The present document studies more focussed the high-level solutions possibilities for PUCI described in the technical report (TR 33.937) on PUCI.
The scope of the study includes:
- Study of the PUCI related information:
- What information to be stored in the HSS.
- Type of PUCI information to be exchanged (e.g. scoring information, contextual information) and how this information should be structured, or even between which nodes the information should be sent.
- If and how PUCI information should be sent inside SIP.
- Study on Invoking of 3rd party PUCI AS or Supplementary Services (SS) depending on configuration.
- Interworking
- with non-IMS networks.
- with other IMS services like SRVCC, ICS, and service continuity.
- Types of communication that should/can be covered by PUCI, and how the different types of communication affect the PUCI solution.
- How much of PUCI that can be achieved via prevention and how much needs to be done via treatment.
- PUCIF to PUCIF communication.
- Use of existing methods of user notification for PUCI communication.
- Mitigation of source identity spoofing, especially from non-IMS networks, on the effectiveness of the PUCI mechanism.
- Illustrative use of standardized PUCI features in typical deployment scenarios.