Provisional allocation of documents to agenda items

Q1: Is it correct that there is sufficient detail to implement recovery mechanisms for a mismatch of keys in an interoperable way?

Q2: Do the specifications define building blocks from which the recovery mechanisms can be constructed by an implementation or is every single step defined for recovery from each and every error case?

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  Q3: When SRVCC was introduced, there was yet another situation where there may be a mismatch. Does the addition of the SRVCC error case increase the risk of mismatches to such a degree that the existing recovery mechanisms (assuming such exist) are no longer sufficient?
  

C1-111661

Reply LS on MTC USIM requirements for Release 10 (S3-110556)

SA3

CC

Noted Related to the requirement for the network operator to be able to restrict the use of a USIM to specific MEs/MTC Devices. SA3 would like to study this and move the requirement to Rel-11. SA3 would like to thank SA1 and CT1 for their LSs S3-110335/S1-110422 and S3-110327/C1-111155 respectively. In their LS S3-110335/S1-110422, SA1 indicated that SA1 has concluded to keep the requirement “The network operator shall be able to restrict the use of a USIM to specific MEs/MTC Devices” in the Release 10 version of TS 22.368 since CT6 had indicated that CT6 could implement this requirement in Release 10. In their meeting #63, SA3 discussed a network based solution for meeting the above requirement, and during the discussion security concerns were raised. Based on the discussion SA3 concluded that security implications and requirements for both terminal and network based solutions should be further assessed by SA3 before agreeing on any solution. SA3 intends to assess the security implications and requirements in Rel-11 timeframe. Therefore, SA3 would like to suggest that the requirement “The network operator shall be able to restrict the use of a USIM to specific MEs/MTC Devices” be moved to Rel-11, and that work on possible solutions to meet this requirement should be consequently conducted in Rel-11. In addition, SA3 would like ask CT6 questions in order to better understand the solutions CT6 is working on. Question 1: Will the solutions discussed in CT6 allow restricting the use of a USIM to one ME/MTC Device or more than one MEs/MTC Devices, especially to a large number of MEs/MTC devices? Question 2: How is the operator able to enforce the restriction in CT6 solutions, or is the enforcement done only on the device?