Dynamic UE Processing Time Configuration for NR Pipelining
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Solution Overview
Problem
The existing technologies for New Radio (NR) user equipment (UE) processing times are inadequate in supporting very tight processing requirements, leading to adverse impacts on UE pipelining due to dynamic switching between different processing capabilities, especially in scenarios involving back-to-back scheduling with varying bandwidth and channel durations.
Innovation Solution
The implementation of Capability 2 UE processing times, which allows for dynamic switching between baseline and aggressive processing modes by configuring UE capabilities on a per-component carrier basis, with specific handling of back-to-back scheduling and short channel durations to ensure efficient pipelining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic switching between baseline and aggressive processing modes is implemented, then processing capability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic switching between baseline (Capability 1) and aggressive (Capability 2) processing modes based on scheduling conditions. The UE determines whether to apply Capability 1 or Capability 2 processing times based on whether back-to-back scheduling occurs and whether the channel duration is sufficient, allowing the system to adapt processing capability to actual operating conditions rather than being fixed.
Solution Approach 2:
The patent changes the processing time parameter dynamically by selecting between two defined capability sets. Capability 1 defines baseline processing times (N1 for PDSCH, N2 for PUSCH) while Capability 2 defines aggressive processing times. The system changes which parameter set is active based on scheduling scenarios, effectively adjusting processing speed without hardware modification.
2Productivity
If tight processing times are enforced, then productivity is improved, but reliability decreases due to pipelining disruptions
Solution Approach 1:
The patent dynamically adjusts processing time requirements based on scheduling conditions. When back-to-back scheduling occurs with insufficient channel duration, the system switches to Capability 1 baseline processing times, which are more relaxed and maintain pipelining stability. When conditions permit, it uses Capability 2 aggressive processing times to maximize productivity. This dynamic adaptation prevents pipelining disruptions while maintaining tight processing times when safe.
Solution Approach 2:
The patent provides a safety cushion by defining baseline Capability 1 processing times that are more relaxed and reliable. When uncertain scheduling conditions arise (back-to-back scheduling with varying bandwidth and channel durations), the system falls back to the cushioned baseline timings rather than risking pipelining disruptions with aggressive timings, ensuring reliability is maintained under adverse conditions.
3Reliability
If baseline processing times are used for all scenarios, then reliability is maintained, but productivity decreases due to unnecessary conservative timing
Solution Approach 1:
Instead of statically using baseline Capability 1 processing times for all scenarios, the patent dynamically selects between Capability 1 and Capability 2 based on actual scheduling conditions. When back-to-back scheduling does not occur and channel duration is sufficient, the system uses aggressive Capability 2 processing times, significantly improving processing efficiency and productivity without compromising reliability, since the conditions guarantee safe timing.
Solution Approach 2:
The patent changes the active processing time parameter from always being Capability 1 baseline to dynamically switching between Capability 1 and Capability 2. This parameter change allows the system to use tighter, more efficient timing parameters (Capability 2) when scheduling conditions permit, eliminating the productivity penalty of always using conservative baseline timings while maintaining reliability through condition-based selection.
4Adaptability or versatility
If per-component carrier capability configuration is implemented, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent segments the capability configuration by component carrier, allowing different processing capabilities to be configured for different carriers. The UE can be configured with Capability 1 for some component carriers and Capability 2 for others, enabling fine-grained adaptability to different carrier characteristics and scheduling patterns without requiring complete reconfiguration of the entire system.
Solution Approach 2:
The patent applies local quality by allowing different processing capability configurations (Capability 1 or Capability 2) to be assigned to different component carriers based on their specific characteristics and scheduling requirements. Each component carrier can have optimized processing times locally configured, rather than applying a uniform capability setting across all carriers, improving overall system adaptability.
Data Source
AI summary
A method of support of aggressive user equipment (UE) minimum processing times for physical downlink shared channel (PDSCH) processing and physical uplink shared channel (PUSCH) preparation in new radio (NR) is disclosed. The method includes indicating or causing to indicate a capability from the UE to the network in the form of capability reporting for support of Capability 2 processing times, and multiplexing or causing to multiplex scheduling instances with Capabilities 1 or 2 based on the indication. The method also includes applying or causing to apply a relaxation to the minimum UE processing times, N1, indicating time between end of PDSCH to earliest start of corresponding hybrid automatic repeat request-acknowledge (HARQ-ACK) feedback transmission when the PDSCH has specific durations and/or mapping types or has time-domain overlaps with the scheduling physical downlink control channel (PDCCH). A corresponding apparatus and non-transitory computer readable medium are also disclosed.