Dual-Connectivity Uplink PDCP Delay Reporting by Radio Leg

The patent segments the delay measurement by introducing a granularity indicator that divides the delay into two components: D1 (PDCP layer delay) and D2 (RLC layer delay). This segmentation allows the network to identify which specific leg or layer contributes most to the overall delay while maintaining a structured reporting mechanism that balances information completeness with measurement complexity.

The patent applies local quality by allowing different delay measurement and reporting behaviors based on the specific dual connectivity configuration and network requirements. The UE can calculate separate D1 and D2 measurements when needed, while the granularity indicator enables selective reporting that adapts to local network conditions, thereby achieving precise measurement without uniformly increasing complexity across all scenarios.

The patent implements partial action by introducing an optional granularity indicator that provides detailed delay breakdown information only when required by the network. The network can request specific delay components (D1 or D2) based on its optimization needs, rather than always receiving complete detailed information. This approach enables adaptive optimization capability while controlling signaling overhead by transmitting only the necessary delay measurements.