On overall aspects of the 6GR multi-antenna system

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Proposes ruling out 60 kHz SCS from the Around 15 GHz scenario and postponing final SCS selection between 30 kHz and 120 kHz until end of 2026. Requires supporting only normal CP length for TN communication, and for NTN only normal CP in DL with any UL pre-compensation solutions maintaining alignment with NCP symbol structure. For 400MHz UE support with 30 kHz SCS, requires a single RF chain per antenna port with unified processing framework, proposing consideration of asymmetric CBW (200MHz UL / 400MHz DL). Proposes studying three frame structure configuration options (symbol-based, layer-based, 2D resource) and requires removing UE-specific TDD configuration while supporting flexible symbols as a resource type. Requires semi-static TDD as the primary duplexing scheme, proposes deprioritizing dynamic SBFD, UE SBFD, and gNB FD, and supports dynamic TDD based on predefined TDD patterns rather than NR's symbol-level SFI. For spectrum aggregation, proposes building 6G CA upon a single unified framework with decoupled serving cell scheduling and proposes studying semi-static UL TX switching patterns instead of NR's dynamic triggering approach.