Uplink Control Channel Overlap Resolution in Multi-Slot 5G
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently managing and transmitting multiple multi-slot uplink control channels due to overlapping slot sets, which can lead to conflicts and inefficient resource allocation.
Innovation Solution
A method where a user equipment (UE) determines overlapping uplink control channels in multiple slot sets and applies a predetermined rule to prioritize and transmit specific control channels in shared slots, ensuring efficient transmission by dropping lower-priority channels in overlapping slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple multi-slot uplink control channels are transmitted in overlapping slot sets, then the quantity of control information transmitted is improved, but resource allocation conflicts and transmission reliability deteriorate
Solution Approach 1:
The patent changes the parameter of slot set configuration by introducing a second slot set with different time domain characteristics compared to the first slot set. This allows the system to accommodate multiple control channels with different slot durations and timing, resolving the conflict between transmitting multiple control channels and maintaining transmission reliability by avoiding overlapping transmissions in the same time resources
Solution Approach 2:
The patent segments the uplink control channel transmissions into distinct slot sets, where each slot set contains specific slots allocated for particular control channels. By dividing the transmission resources into separate slot sets with defined overlapping relationships, the system can manage multiple control channels systematically and resolve conflicts through structured resource allocation
2Area of stationary object
If multiple multi-slot uplink control channels are transmitted in overlapping slot sets, then the control channel coverage is improved, but device complexity increases
Solution Approach 1:
The patent enables the user equipment to autonomously determine and resolve conflicts between overlapping control channels using predetermined rules without requiring complex network coordination. The UE independently identifies slot set overlaps, applies conflict resolution rules, and adjusts transmissions accordingly, reducing overall system complexity while maintaining extended coverage
3Adaptability or versatility
If slot sets with different slot durations are configured, then the adaptability of the system is improved, but resource allocation complexity increases
Solution Approach 1:
The patent introduces configurable parameters for slot set durations, allowing different slot lengths (e.g., first slot set with one slot duration, second slot set with another slot duration) to accommodate diverse service requirements. This parameter flexibility enables the system to adapt to varying traffic patterns and service types while maintaining manageable resource allocation through structured configuration
Data Source
AI summary
In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE determines that a first uplink control channel is scheduled to be transmitted in a first slot set including multiple consecutive slots and that a second uplink control channel is scheduled to be transmitted in a second slot set including one or more consecutive slots. The UE determines that the first uplink control channel and the second uplink control channel overlap in a first slot that is included in both the first slot set and the second slot set. The UE determines that a particular uplink control channel of the first uplink control channel and the second uplink control channel is to be transmitted in the first slot based on a predetermined rule. The UE transmits the particular uplink control channel in the first slot.