HARQ Feedback Buffering via Coreset Pool Association
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Solution Overview
Problem
Current mobile communication networks face challenges in efficiently managing and optimizing communication protocols across diverse wireless devices and base stations, particularly in supporting multiple technologies and releases, which affects network performance and resource allocation.
Innovation Solution
The implementation of advanced New Radio (NR) user plane and control plane protocol stacks, along with bandwidth adaptation and carrier aggregation techniques, enables flexible configuration and optimization of communication protocols to accommodate various wireless devices and base stations, improving network efficiency and resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If HARQ feedback information is buffered and transmitted later, then network resource utilization is improved, but transmission delay increases
Solution Approach 1:
The patent applies preliminary action by buffering HARQ feedback information before transmission. The UE stores feedback information in a buffer during a determined time window, preparing it in advance for later transmission when resources become available, thus improving resource utilization while managing delay.
Solution Approach 2:
The patent introduces an intermediary mechanism by using a determined time window and buffer as a mediator between feedback generation and transmission. This intermediary structure allows flexible scheduling of feedback transmission, decoupling the immediate feedback generation from the actual transmission timing.
2Reliability
If multiple HARQ feedback information are transmitted simultaneously, then feedback completeness is improved, but resource conflict increases
Solution Approach 1:
The patent applies segmentation by dividing the transmission of multiple HARQ feedback information into separate time resources. The determined time window mechanism segments simultaneous feedback transmissions into sequential transmissions, eliminating resource conflicts while maintaining feedback completeness.
Solution Approach 2:
The patent introduces dynamics by making the time window determination flexible and adaptive. The time window is determined based on multiple factors including capability information, configuration information, and indication information, allowing the system to dynamically adjust transmission timing to avoid resource conflicts.
3Loss of time
If HARQ feedback is transmitted immediately, then transmission delay is reduced, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent applies feedback by using capability information, configuration information, and indication information to determine the optimal time window for feedback transmission. This feedback mechanism allows the system to adjust transmission timing based on current resource allocation status, balancing delay and efficiency.
Data Source
AI summary
A wireless device receives, via a first control resource set (coreset) pool of a plurality of coreset pools, a first downlink control information (DCI) indicating no feedback timing for transmission of feedback information of the first DCI. The wireless device receives a second DCI indicating a first physical uplink control channel (PUCCH). The wireless device transmits the feedback information of the first DCI via the first PUCCH, based on the first PUCCH being associated with the first coreset pool via which the first DCI is received.