Dynamic Downlink Control Channel Decoding Candidate Configuration
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently configuring the timeline and quantity of downlink control channel decoding candidates, leading to high energy consumption and throughput limitations in user equipment (UEs).
Innovation Solution
UEs transmit capability information indicating different processing and preparation time durations for varying quantities of downlink control channel decoding candidates, allowing network entities to select appropriate time offsets and adjust decoding quantities based on these durations to optimize throughput while reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE monitors a larger quantity of downlink control channel decoding candidates, then the throughput is improved, but the energy consumption increases
Solution Approach 1:
The patent implements dynamic adjustment of the quantity of downlink control channel decoding candidates based on UE capability and network conditions. The network entity configures different quantities of decoding candidates (e.g., first quantity for high throughput scenarios, second quantity for energy-saving scenarios) and dynamically switches between them using control messages, allowing the system to adapt between throughput optimization and energy consumption reduction.
Solution Approach 2:
The patent changes the parameter of decoding candidate quantity based on UE processing capability. The UE reports its capability information (processing time duration, preparation time duration) to the network entity, which then configures appropriate quantities of decoding candidates matching the UE's processing capacity, avoiding unnecessary energy consumption while maintaining required throughput performance.
2Productivity
If the UE processes a larger quantity of downlink control channel decoding candidates, then the throughput is improved, but the processing time increases
Solution Approach 1:
The patent applies preliminary action by having the UE report its processing capability information (processing time duration, preparation time duration) to the network entity in advance. Based on this pre-reported capability, the network entity pre-configures appropriate quantities of decoding candidates and corresponding time offsets, ensuring that the UE is prepared to process the configured quantity within its capability limits without excessive processing time.
Solution Approach 2:
The system dynamically adjusts the quantity of decoding candidates and associated time offsets based on real-time network conditions and UE capability. When high throughput is required, the network configures a larger quantity of candidates with appropriate time offsets; when lower throughput suffices, it reduces the quantity to minimize processing time and energy consumption.
3Productivity
If the network configures more downlink control channel decoding candidates, then the throughput is improved, but the device complexity increases
Solution Approach 1:
The patent changes the configuration parameter of decoding candidate quantity to match UE capability. The UE reports its processing capability (processing time, preparation time), and the network configures an appropriate quantity of decoding candidates that the UE can handle without excessive complexity. This capability-based configuration ensures that the UE processes a manageable number of candidates appropriate to its processing power.
Solution Approach 2:
The patent segments the downlink control channel monitoring into multiple search space sets, each with a configured quantity of decoding candidates. The network can activate or deactivate specific search space sets based on traffic conditions and UE capability, dividing the overall monitoring task into manageable segments that reduce instantaneous processing complexity while maintaining overall throughput performance.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit, to a network entity, capability information indicating multiple downlink processing time durations and multiple uplink preparation time durations associated with different quantities of downlink control channel decoding candidates. The UE may receive, based on the capability information, control messages indicating a set of time offsets associated with a quantity of downlink control channel decoding candidates. The third quantity of downlink control channel decoding candidates may be a quantity of downlink control channel decoding candidates of the different quantities of downlink control channel decoding candidates indicated in the capability information, and the set of time offsets may be based on a downlink processing time duration and uplink preparation time duration associated with the quantity of downlink control channel decoding candidates. The UE may monitor downlink control channel decoding candidates based on the control messages.