SA2 kindly asks CT1 to provide feedback on the UE impact of the solution described above.
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C1-111652
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LS on Transfer of SPID during (inter-RAT) handover (S2-111267)
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SA2
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CC
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Noted
LS is from SA2 on on topic of SPID/RFSP for CS domain. SA2 is answering CT4's questions on applicability of SPID for CS domain and if used what it is used for and how is the handling.
SA2 action to CT4 is do nothing for now.
SA2 action to GERAN2 and RAN3: for SPID transfer shall not be used for CS domain while SA2 studies more. SA2 asked GERAN2 and RAN3 " whether the addition of the SPID in the Old BSS to New BSS Information is feasible"
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C1-111653
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Reply LS on Cell Broadcast Service for MOCN Shared Network (S2-111272)
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SA2
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To
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Noted
Reply from SA2 to LS from CT1 (C1-110777).
Reply from GERAN2 available in C1-111628.
Reply from SA1 received at CT1#70 in C1-111139.
SA2 thanks CT1 for their LS on issues related to deployment of CBS service in a shared network.
SA2 agrees with CT1 that solution 2 (One dedicated CBC per CN operator) would add complexity in the MOCN case. In addition to the additional complexity, this solution would not allow the users camping in the shared RAN to only receive CBS service from their serving PLMN as the CBS is broadcast for all UEs on the common shared channel.
Solution 1a “Common CBC is provided by shared RAN network” does not seem to be the best way forward, for an E-UTRAN based EPS as TS 23.401 specifies an interface between CBC and MME, and the CBS messages are sent to the eNB through S1-MME. For GERAN/UTRAN the solution can be an option.
Solution 1b “Common CBC provided by one of the CN operator based on pre-arranged agreement / configuration“ does not change the existing architecture. Therefore, SA2 would recommend this solution for MOCN and GWCN shared networks, specifically for an E-UTRAN based EPS.
However, SA2 would like to comment that the general solution is a common CBC that connects directly to the RAN according to existing specifications for GERAN/UTRAN or through a CN node (the MME) for the E-UTRAN. The deployment and configuration of the common CBC by the RAN or a CN operator is basically an agreement between the sharing operators. Further the sharing operators need to coordinate the broadcast services between each other.
SA2 has agreed on the attached Rel-10 CR to 23.251.
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