| Discussion and conclusion:
Revision of TD S2 154451 from meeting #112. Sources need confirmation. WI Code should be CIoT. Not Handled.
TD S2 160349 23.401 CR2968 (Rel 13, 'C'): DL data handling for CP optimisation in TAU procedure. (Source: Huawei, HiSilicon).
Abstract: Summary of change: For the TAU procedure without SGW change, if the DL data is buffered in the Serving GW, the MME setup up the S11 user plane for buffered DL data transmission from Serving GW. For the TAU procedure with SGW change, if the DL data is buffered in the Serving GW, the old MME setup up the S11 user plane to the old Serving GW for buffered DL data delivery, and the old MME includes the DL data in the Context Response message to the new MME.
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