Downlink Control Information Quantity Limits for 5G Buffering
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G and LTE technologies, face challenges in efficiently managing and processing downlink control information (DCI) due to delays between DCI reception and the corresponding events, leading to increased buffering requirements and reduced throughput, especially in scenarios with multiple DCIs needing to be stored and processed simultaneously.
Innovation Solution
Implementing a method to determine and limit the quantity of DCI processed within a frame, allowing for flexible frame structures and cross-slot scheduling, which enables UEs to handle a restricted number of DCIs, thereby reducing the need for simultaneous processing and minimizing buffering requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the quantity of DCI processed is increased to support more simultaneous events, then the system capacity and event handling capability are improved, but the buffering requirements and processing complexity increase
Solution Approach 1:
The patent segments the DCI processing by introducing a limit on the quantity of DCI that can be processed simultaneously. This divides the processing into manageable chunks, where only a restricted number of DCI are buffered and processed at any given time, reducing the overall buffering requirements while maintaining systematic handling of multiple DCI
Solution Approach 2:
The patent changes the parameter of DCI quantity limit from an unlimited or high value to a restricted value. By adjusting this parameter, the system reduces buffering requirements and processing complexity while still supporting multiple simultaneous events through controlled parallel processing
2Quantity of substance
If the quantity of DCI processed is increased to support more simultaneous events, then the system capacity and event handling capability are improved, but the processing time and delays increase
Solution Approach 1:
The patent applies the skipping principle by rapidly processing the limited quantity of DCI within the restricted time window. By focusing processing resources on a smaller set of DCI, the system can complete processing faster, reducing delays while still supporting multiple events through the controlled quantity limit
3Adaptability or versatility
If flexible frame structures and cross-slot scheduling are implemented, then the adaptability and scheduling flexibility are improved, but the device complexity and processing overhead increase
Solution Approach 1:
The patent segments the flexible frame structure processing by applying DCI quantity limits to each frame or slot independently. This allows the system to maintain adaptability through flexible frame structures while reducing processing overhead by limiting the number of DCI that need to be processed in each segment
Solution Approach 2:
The patent applies partial action by implementing DCI quantity limits that process only a restricted portion of the total DCI that could theoretically be present. This reduces processing overhead while still providing sufficient flexibility for cross-slot scheduling and adaptive frame structures through the controlled partial processing
Data Source
AI summary
Certain aspects of the present disclosure generally relate to methods and apparatus for downlink control information (DCI) communication and processing. One example method generally includes determining a limit, between a transmission time of a control channel carrying a DCI of a plurality of DCI and a time of an event enabled by the DCI, of a quantity of the plurality of DCI in a frame, generating a frame comprising the plurality of DCI in accordance with the determined limit, and transmitting the frame to a user-equipment (UE).