HARQ Acknowledgement Slot Offset Using Available Uplink Slots
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face inefficiencies in determining available slots for uplink transmission in hybrid automatic repeat request acknowledgement, leading to overhead in indicating slot offsets and suboptimal feedback mechanisms.
Innovation Solution
The system employs techniques to count only available uplink slots for feedback transmission by considering slots with uplink or flexible symbols and non-overlapping with synchronization signal blocks, reducing overhead through configurable patterns and slot offset indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If all slots are counted for slot offset calculation, then the feedback mechanism is simple, but the overhead for indicating slot offset increases and uplink slot utilization is suboptimal
Solution Approach 1:
The patent applies local quality by differentiating between available slots and unavailable slots based on their specific characteristics (uplink symbols, flexible symbols, synchronization signal blocks). Instead of treating all slots uniformly, the system counts only slots that are actually available for uplink transmission, thereby reducing overhead while maintaining feedback mechanism simplicity.
Solution Approach 2:
The patent changes the parameter of slot counting from counting all slots to counting only available slots. This parameter change fundamentally alters how slot offset is calculated and indicated, reducing the overhead required for feedback while improving uplink slot utilization efficiency.
2Ease of operation
If all slots are counted for slot offset, then the slot offset indication is straightforward, but uplink slot utilization is not optimized
Solution Approach 1:
The patent introduces dynamics by making the slot counting method adaptive rather than fixed. The system dynamically determines which slots to count based on their availability for uplink transmission, considering factors like uplink symbols, flexible symbols, and synchronization signal blocks. This dynamic approach optimizes uplink slot utilization while maintaining ease of operation through configurable patterns.
Solution Approach 2:
The patent changes the counting parameter from total slots to available slots, fundamentally improving uplink slot utilization. By excluding unavailable slots (those with only downlink symbols or overlapping synchronization signal blocks) from the count, the system achieves more efficient resource utilization while keeping the indication mechanism straightforward through downlink control information.
3Device complexity
If slot offset counts all slots including downlink slots, then the counting method is simple, but feedback transmission efficiency is reduced
Solution Approach 1:
The patent extracts only the relevant portions (available slots) from the complete set of slots. By excluding downlink slots and slots with synchronization signal blocks from the counting process, the system focuses only on slots that can actually carry feedback, thereby improving feedback transmission efficiency without significantly complicating the counting method.
Solution Approach 2:
The patent applies local quality by treating different slot types differently in the counting process. Instead of uniform counting, the system selectively counts only slots with uplink or flexible symbols that are available for feedback transmission, thereby improving efficiency while maintaining relative simplicity in the local counting operation.
4Productivity
If configurable patterns are used to identify available slots, then uplink slot utilization is optimized, but the complexity of determining available slots increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the patterns that define available slots through downlink control information. The network entity provides advance information about which slots are available for uplink transmission, allowing the user equipment to efficiently determine available slots without complex real-time analysis, thus optimizing utilization while managing complexity.
Solution Approach 2:
The patent uses downlink control information as an intermediary to convey slot availability patterns. This intermediary mechanism simplifies the complexity of determining available slots by translating complex slot availability rules into manageable control information that can be easily processed by the user equipment.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A wireless communications system may support techniques to indicate a slot offset which counts slots that are available for uplink transmission. To determine a slot for transmitting feedback on an uplink control channel corresponding to a downlink shared channel, a slot offset may only count available uplink slots for uplink transmission. The criteria for an available uplink slot may be configurable. A slot may be counted as available if the slot includes at least one uplink or flexible symbol. A slot may be counted as available if the slot can accommodate an uplink control channel resource to transmit the feedback. An available slot may be non-overlapping with a synchronization signal block. The network may configure a pattern associated with which slots are to be counted as available slots.