Priority-Based Scheduling for 5G Downlink Uplink Control
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Solution Overview
Problem
Current mobile communication networks face challenges in efficiently managing and optimizing communication protocols across a diverse range of wireless devices and base stations supporting multiple technologies, leading to suboptimal performance and resource utilization.
Innovation Solution
The implementation of advanced New Radio (NR) user plane and control plane protocol stacks, along with flexible bandwidth management and carrier aggregation techniques, enables dynamic configuration and optimization of communication protocols to adapt to varying device capabilities and network conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple downlink and uplink carriers are scheduled simultaneously, then network capacity and data transmission rates are improved, but resource allocation complexity and scheduling conflicts increase
Solution Approach 1:
The patent segments the scheduling process by introducing a priority field in DCI messages that divides uplink transmissions into different priority levels. This segmentation allows the network to handle multiple carriers systematically by assigning priority values, where higher priority transmissions are scheduled first, reducing conflicts while maintaining high network capacity.
Solution Approach 2:
The patent implements dynamic priority-based scheduling where the network can adjust priority levels dynamically based on current network conditions, QoS requirements, and traffic patterns. This dynamic approach enables flexible resource allocation across multiple carriers, optimizing network capacity while adapting to changing scheduling demands.
2Productivity
If dynamic TDM pattern adjustment is implemented, then resource utilization efficiency is improved, but control signaling overhead and processing complexity increase
Solution Approach 1:
The patent applies partial action by implementing TDM pattern adjustment only when necessary based on traffic conditions. Instead of continuously adjusting patterns, the system monitors resource utilization and triggers dynamic TDM reconfiguration only when thresholds are exceeded, reducing control signaling overhead while maintaining improved resource utilization efficiency during critical periods.
3Speed
If carrier aggregation with multiple bandwidths is supported, then data transmission rates are improved, but device power consumption and processing requirements increase
Solution Approach 1:
The patent implements local quality by enabling carrier aggregation selectively based on traffic requirements and device capabilities. Instead of activating all aggregated carriers continuously, the system activates specific carriers and bandwidth configurations locally based on current data transmission demands, thereby achieving high data rates when needed while reducing power consumption during lower traffic conditions.
Data Source
AI summary
A wireless device receives a downlink control information (DCI) indicating time resources for receiving a plurality of physical downlink control channels (PDSCHs) across slots in a cell, a first priority index, and a first physical uplink control channel (PUCCH) for transmitting feedback information of PDSCHs associated with the first priority index. One or more first PDSCHs are determined from the plurality of PDSCHs as being associated with the first priority index, based on a time resource of each PDSCH of the plurality of PDSCHs. The wireless device may also transmit first feedback information of the one or more first PDSCHs via the first PUCCH of the first priority index, based on the first priority index.