Study on EPC signalling improvements for race scenarios
The present document analyses various EPC race conditions scenarios and scenarios with hanging session or bearer contexts in EPC nodes, and assesses whether to improve the existing protocols and/or specifications for effective handling of these scenarios. The specification updates, if needed, may consist in EPC (GTP-C, PMIP and/or Diameter) signalling improvements, recommendations on how to minimize the occurrences of the issues, and/or clarifications on how the EPC nodes should behave in these scenarios.