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LTE: What does means by non-current native EPS security context ?

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when and what is the use of such type of security context ?

posted Oct 17, 2013 by Vikram Singh

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1 Answer

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There are other states in which EPS security contexts can be: 'current and 'non-current'.

  • The current security context is the one that has been activated most recently.
  • A non-current security context is sitting on the side and waiting to replace the current one.
  • A partial native EPS security context can be non-current, namely when it has been pushed aside by a mapped EPS security context in a handover from UTRAN or GERAN to EPS.

    A mapped EPS security context never becomes non-current. The different handling of native and mapped in this respect is explained by the fact that a native context is considered of higher value as it originates from within the EPS itself. It may therefore be used later (again), while a mapped context may be discarded when no longer used as a current context. The type of a context does not change during its lifetime. The state of a context can change, but it can be only in one state at a time.

I hope i have answered your query.

answer May 19, 2014 by Hiteshwar Thakur